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zircon-guest/third_party/linux/refs/heads/linux-rolling-stable/./drivers/scsi/fnic/fdls_disc.c
blob: 8cb40466872f891f754462664db205b3936e1145 [file] [edit]
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/workqueue.h>
#include "fnic.h"
#include "fdls_fc.h"
#include "fnic_fdls.h"
#include <scsi/fc/fc_fcp.h>
#include <scsi/scsi_transport_fc.h>
#include <linux/utsname.h>
#define FC_FC4_TYPE_SCSI 0x08
#define FNIC_NVME_FEAT_TARG (1 << 0)
#define FNIC_NVME_FEAT_INIT (1 << 1)
#define FNIC_NVME_FEAT_DISC (1 << 2)
#define PORT_SPEED_BIT_8 8
#define PORT_SPEED_BIT_9 9
#define PORT_SPEED_BIT_14 14
#define PORT_SPEED_BIT_15 15
/* FNIC FDMI Register HBA Macros */
#define FNIC_FDMI_NUM_PORTS 1
#define FNIC_FDMI_NUM_HBA_ATTRS 9
#define FNIC_FDMI_TYPE_NODE_NAME 0X1
#define FNIC_FDMI_TYPE_MANUFACTURER 0X2
#define FNIC_FDMI_MANUFACTURER "Cisco Systems"
#define FNIC_FDMI_TYPE_SERIAL_NUMBER 0X3
#define FNIC_FDMI_TYPE_MODEL 0X4
#define FNIC_FDMI_TYPE_MODEL_DES 0X5
#define FNIC_FDMI_MODEL_DESCRIPTION "Cisco Virtual Interface Card"
#define FNIC_FDMI_TYPE_HARDWARE_VERSION 0X6
#define FNIC_FDMI_TYPE_DRIVER_VERSION 0X7
#define FNIC_FDMI_TYPE_ROM_VERSION 0X8
#define FNIC_FDMI_TYPE_FIRMWARE_VERSION 0X9
#define FNIC_FDMI_NN_LEN 8
#define FNIC_FDMI_MANU_LEN 20
#define FNIC_FDMI_SERIAL_LEN 16
#define FNIC_FDMI_MODEL_LEN 12
#define FNIC_FDMI_MODEL_DES_LEN 56
#define FNIC_FDMI_HW_VER_LEN 16
#define FNIC_FDMI_DR_VER_LEN 28
#define FNIC_FDMI_ROM_VER_LEN 8
#define FNIC_FDMI_FW_VER_LEN 16
/* FNIC FDMI Register PA Macros */
#define FNIC_FDMI_TYPE_FC4_TYPES 0X1
#define FNIC_FDMI_TYPE_SUPPORTED_SPEEDS 0X2
#define FNIC_FDMI_TYPE_CURRENT_SPEED 0X3
#define FNIC_FDMI_TYPE_MAX_FRAME_SIZE 0X4
#define FNIC_FDMI_TYPE_OS_NAME 0X5
#define FNIC_FDMI_TYPE_HOST_NAME 0X6
#define FNIC_FDMI_NUM_PORT_ATTRS 6
#define FNIC_FDMI_FC4_LEN 32
#define FNIC_FDMI_SUPP_SPEED_LEN 4
#define FNIC_FDMI_CUR_SPEED_LEN 4
#define FNIC_FDMI_MFS_LEN 4
#define FNIC_FDMI_MFS 0x800
#define FNIC_FDMI_OS_NAME_LEN 16
#define FNIC_FDMI_HN_LEN 24
#define FDLS_FDMI_PLOGI_PENDING 0x1
#define FDLS_FDMI_REG_HBA_PENDING 0x2
#define FDLS_FDMI_RPA_PENDING 0x4
#define FDLS_FDMI_ABORT_PENDING 0x8
#define FDLS_FDMI_MAX_RETRY 3
#define RETRIES_EXHAUSTED(iport) \
(iport->fabric.retry_counter == FABRIC_LOGO_MAX_RETRY)
#define FNIC_TPORT_MAX_NEXUS_RESTART (8)
#define SCHEDULE_OXID_FREE_RETRY_TIME (300)
/* Private Functions */
static void fdls_fdmi_register_hba(struct fnic_iport_s *iport);
static void fdls_fdmi_register_pa(struct fnic_iport_s *iport);
static void fdls_send_rpn_id(struct fnic_iport_s *iport);
static void fdls_process_flogi_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr,
void *rx_frame);
static void fnic_fdls_start_plogi(struct fnic_iport_s *iport);
static void fnic_fdls_start_flogi(struct fnic_iport_s *iport);
static struct fnic_tport_s *fdls_create_tport(struct fnic_iport_s *iport,
uint32_t fcid,
uint64_t wwpn);
static void fdls_target_restart_nexus(struct fnic_tport_s *tport);
static void fdls_start_tport_timer(struct fnic_iport_s *iport,
struct fnic_tport_s *tport, int timeout);
static void fdls_tport_timer_callback(struct timer_list *t);
static void fdls_send_fdmi_plogi(struct fnic_iport_s *iport);
static void fdls_start_fabric_timer(struct fnic_iport_s *iport,
int timeout);
static void fdls_init_plogi_frame(uint8_t *frame, struct fnic_iport_s *iport);
static void fdls_init_els_acc_frame(uint8_t *frame, struct fnic_iport_s *iport);
static void fdls_init_els_rjt_frame(uint8_t *frame, struct fnic_iport_s *iport);
static void fdls_init_logo_frame(uint8_t *frame, struct fnic_iport_s *iport);
static void fdls_init_fabric_abts_frame(uint8_t *frame,
struct fnic_iport_s *iport);
uint8_t *fdls_alloc_frame(struct fnic_iport_s *iport)
{
struct fnic *fnic = iport->fnic;
uint8_t *frame = NULL;
frame = mempool_alloc(fnic->frame_pool, GFP_ATOMIC);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame");
return NULL;
}
memset(frame, 0, FNIC_FCOE_FRAME_MAXSZ);
return frame;
}
/**
* fdls_alloc_oxid - Allocate an oxid from the bitmap based oxid pool
* @iport: Handle to iport instance
* @oxid_frame_type: Type of frame to allocate
* @active_oxid: the oxid which is in use
*
* Called with fnic lock held
*/
uint16_t fdls_alloc_oxid(struct fnic_iport_s *iport, int oxid_frame_type,
uint16_t *active_oxid)
{
struct fnic *fnic = iport->fnic;
struct fnic_oxid_pool_s *oxid_pool = &iport->oxid_pool;
int idx;
uint16_t oxid;
lockdep_assert_held(&fnic->fnic_lock);
/*
* Allocate next available oxid from bitmap
*/
idx = find_next_zero_bit(oxid_pool->bitmap, FNIC_OXID_POOL_SZ, oxid_pool->next_idx);
if (idx == FNIC_OXID_POOL_SZ) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Alloc oxid: all oxid slots are busy iport state:%d\n",
iport->state);
return FNIC_UNASSIGNED_OXID;
}
WARN_ON(test_and_set_bit(idx, oxid_pool->bitmap));
oxid_pool->next_idx = (idx + 1) % FNIC_OXID_POOL_SZ; /* cycle through the bitmap */
oxid = FNIC_OXID_ENCODE(idx, oxid_frame_type);
*active_oxid = oxid;
FNIC_FCS_DBG(KERN_INFO, fnic,
"alloc oxid: 0x%x, iport state: %d\n",
oxid, iport->state);
return oxid;
}
/**
* fdls_free_oxid_idx - Free the oxid using the idx
* @iport: Handle to iport instance
* @oxid_idx: The index to free
*
* Free the oxid immediately and make it available for new requests
* Called with fnic lock held
*/
static void fdls_free_oxid_idx(struct fnic_iport_s *iport, uint16_t oxid_idx)
{
struct fnic *fnic = iport->fnic;
struct fnic_oxid_pool_s *oxid_pool = &iport->oxid_pool;
lockdep_assert_held(&fnic->fnic_lock);
FNIC_FCS_DBG(KERN_INFO, fnic,
"free oxid idx: 0x%x\n", oxid_idx);
WARN_ON(!test_and_clear_bit(oxid_idx, oxid_pool->bitmap));
}
/**
* fdls_reclaim_oxid_handler - Callback handler for delayed_oxid_work
* @work: Handle to work_struct
*
* Scheduled when an oxid is to be freed later
* After freeing expired oxid(s), the handler schedules
* another callback with the remaining time
* of next unexpired entry in the reclaim list.
*/
void fdls_reclaim_oxid_handler(struct work_struct *work)
{
struct fnic_oxid_pool_s *oxid_pool = container_of(work,
struct fnic_oxid_pool_s, oxid_reclaim_work.work);
struct fnic_iport_s *iport = container_of(oxid_pool,
struct fnic_iport_s, oxid_pool);
struct fnic *fnic = iport->fnic;
struct reclaim_entry_s *reclaim_entry, *next;
unsigned long delay_j, cur_jiffies;
FNIC_FCS_DBG(KERN_INFO, fnic,
"Reclaim oxid callback\n");
spin_lock_irqsave(&fnic->fnic_lock, fnic->lock_flags);
/* Though the work was scheduled for one entry,
* walk through and free the expired entries which might have been scheduled
* at around the same time as the first entry
*/
list_for_each_entry_safe(reclaim_entry, next,
&(oxid_pool->oxid_reclaim_list), links) {
/* The list is always maintained in the order of expiry time */
cur_jiffies = jiffies;
if (time_before(cur_jiffies, reclaim_entry->expires))
break;
list_del(&reclaim_entry->links);
fdls_free_oxid_idx(iport, reclaim_entry->oxid_idx);
kfree(reclaim_entry);
}
/* schedule to free up the next entry */
if (!list_empty(&oxid_pool->oxid_reclaim_list)) {
reclaim_entry = list_first_entry(&oxid_pool->oxid_reclaim_list,
struct reclaim_entry_s, links);
delay_j = reclaim_entry->expires - cur_jiffies;
schedule_delayed_work(&oxid_pool->oxid_reclaim_work, delay_j);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Scheduling next callback at:%ld jiffies\n", delay_j);
}
spin_unlock_irqrestore(&fnic->fnic_lock, fnic->lock_flags);
}
/**
* fdls_free_oxid - Helper function to free the oxid
* @iport: Handle to iport instance
* @oxid: oxid to free
* @active_oxid: the oxid which is in use
*
* Called with fnic lock held
*/
void fdls_free_oxid(struct fnic_iport_s *iport,
uint16_t oxid, uint16_t *active_oxid)
{
fdls_free_oxid_idx(iport, FNIC_OXID_IDX(oxid));
*active_oxid = FNIC_UNASSIGNED_OXID;
}
/**
* fdls_schedule_oxid_free - Schedule oxid to be freed later
* @iport: Handle to iport instance
* @active_oxid: the oxid which is in use
*
* Gets called in a rare case scenario when both a command
* (fdls or target discovery) timed out and the following ABTS
* timed out as well, without a link change.
*
* Called with fnic lock held
*/
void fdls_schedule_oxid_free(struct fnic_iport_s *iport, uint16_t *active_oxid)
{
struct fnic *fnic = iport->fnic;
struct fnic_oxid_pool_s *oxid_pool = &iport->oxid_pool;
struct reclaim_entry_s *reclaim_entry;
unsigned long delay_j = msecs_to_jiffies(OXID_RECLAIM_TOV(iport));
int oxid_idx = FNIC_OXID_IDX(*active_oxid);
lockdep_assert_held(&fnic->fnic_lock);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Schedule oxid free. oxid: 0x%x\n", *active_oxid);
*active_oxid = FNIC_UNASSIGNED_OXID;
reclaim_entry = (struct reclaim_entry_s *)
kzalloc_obj(struct reclaim_entry_s, GFP_ATOMIC);
if (!reclaim_entry) {
FNIC_FCS_DBG(KERN_WARNING, fnic,
"Failed to allocate memory for reclaim struct for oxid idx: %d\n",
oxid_idx);
/* Retry the scheduling */
WARN_ON(test_and_set_bit(oxid_idx, oxid_pool->pending_schedule_free));
schedule_delayed_work(&oxid_pool->schedule_oxid_free_retry, 0);
return;
}
reclaim_entry->oxid_idx = oxid_idx;
reclaim_entry->expires = round_jiffies(jiffies + delay_j);
list_add_tail(&reclaim_entry->links, &oxid_pool->oxid_reclaim_list);
schedule_delayed_work(&oxid_pool->oxid_reclaim_work, delay_j);
}
/**
* fdls_schedule_oxid_free_retry_work - Thread to schedule the
* oxid to be freed later
*
* @work: Handle to the work struct
*/
void fdls_schedule_oxid_free_retry_work(struct work_struct *work)
{
struct fnic_oxid_pool_s *oxid_pool = container_of(work,
struct fnic_oxid_pool_s, schedule_oxid_free_retry.work);
struct fnic_iport_s *iport = container_of(oxid_pool,
struct fnic_iport_s, oxid_pool);
struct fnic *fnic = iport->fnic;
struct reclaim_entry_s *reclaim_entry;
unsigned long delay_j = msecs_to_jiffies(OXID_RECLAIM_TOV(iport));
unsigned long flags;
int idx;
for_each_set_bit(idx, oxid_pool->pending_schedule_free, FNIC_OXID_POOL_SZ) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Schedule oxid free. oxid idx: %d\n", idx);
reclaim_entry = kzalloc_obj(*reclaim_entry);
if (!reclaim_entry) {
schedule_delayed_work(&oxid_pool->schedule_oxid_free_retry,
msecs_to_jiffies(SCHEDULE_OXID_FREE_RETRY_TIME));
return;
}
reclaim_entry->oxid_idx = idx;
reclaim_entry->expires = round_jiffies(jiffies + delay_j);
spin_lock_irqsave(&fnic->fnic_lock, flags);
/* Reset may have cleared this bit while this worker allocated. */
if (!test_and_clear_bit(idx, oxid_pool->pending_schedule_free)) {
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
kfree(reclaim_entry);
continue;
}
list_add_tail(&reclaim_entry->links, &oxid_pool->oxid_reclaim_list);
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
schedule_delayed_work(&oxid_pool->oxid_reclaim_work, delay_j);
}
}
static bool fdls_is_oxid_fabric_req(uint16_t oxid)
{
int oxid_frame_type = FNIC_FRAME_TYPE(oxid);
switch (oxid_frame_type) {
case FNIC_FRAME_TYPE_FABRIC_FLOGI:
case FNIC_FRAME_TYPE_FABRIC_PLOGI:
case FNIC_FRAME_TYPE_FABRIC_RPN:
case FNIC_FRAME_TYPE_FABRIC_RFT:
case FNIC_FRAME_TYPE_FABRIC_RFF:
case FNIC_FRAME_TYPE_FABRIC_GPN_FT:
case FNIC_FRAME_TYPE_FABRIC_LOGO:
break;
default:
return false;
}
return true;
}
static bool fdls_is_oxid_fdmi_req(uint16_t oxid)
{
int oxid_frame_type = FNIC_FRAME_TYPE(oxid);
switch (oxid_frame_type) {
case FNIC_FRAME_TYPE_FDMI_PLOGI:
case FNIC_FRAME_TYPE_FDMI_RHBA:
case FNIC_FRAME_TYPE_FDMI_RPA:
break;
default:
return false;
}
return true;
}
static bool fdls_is_oxid_tgt_req(uint16_t oxid)
{
int oxid_frame_type = FNIC_FRAME_TYPE(oxid);
switch (oxid_frame_type) {
case FNIC_FRAME_TYPE_TGT_PLOGI:
case FNIC_FRAME_TYPE_TGT_PRLI:
case FNIC_FRAME_TYPE_TGT_ADISC:
case FNIC_FRAME_TYPE_TGT_LOGO:
break;
default:
return false;
}
return true;
}
static inline bool fdls_is_oxid_nvme_req(uint16_t oxid)
{
return FNIC_FRAME_TYPE(oxid) == FNIC_FRAME_TYPE_NVME_LS;
}
static void fdls_reset_oxid_pool(struct fnic_iport_s *iport)
{
struct fnic_oxid_pool_s *oxid_pool = &iport->oxid_pool;
struct reclaim_entry_s *reclaim_entry, *next;
cancel_delayed_work(&oxid_pool->oxid_reclaim_work);
cancel_delayed_work(&oxid_pool->schedule_oxid_free_retry);
list_for_each_entry_safe(reclaim_entry, next,
&oxid_pool->oxid_reclaim_list, links) {
list_del(&reclaim_entry->links);
kfree(reclaim_entry);
}
bitmap_clear(oxid_pool->pending_schedule_free, 0, FNIC_OXID_POOL_SZ);
bitmap_clear(oxid_pool->bitmap, 0, FNIC_OXID_POOL_SZ);
oxid_pool->next_idx = 0;
}
void fnic_del_fabric_timer_sync(struct fnic *fnic)
{
fnic->iport.fabric.del_timer_inprogress = 1;
spin_unlock_irqrestore(&fnic->fnic_lock, fnic->lock_flags);
timer_delete_sync(&fnic->iport.fabric.retry_timer);
spin_lock_irqsave(&fnic->fnic_lock, fnic->lock_flags);
fnic->iport.fabric.del_timer_inprogress = 0;
}
void fnic_del_tport_timer_sync(struct fnic *fnic,
struct fnic_tport_s *tport)
{
tport->del_timer_inprogress = 1;
spin_unlock_irqrestore(&fnic->fnic_lock, fnic->lock_flags);
timer_delete_sync(&tport->retry_timer);
spin_lock_irqsave(&fnic->fnic_lock, fnic->lock_flags);
tport->del_timer_inprogress = 0;
}
static void
fdls_start_fabric_timer(struct fnic_iport_s *iport, int timeout)
{
u64 fabric_tov;
struct fnic *fnic = iport->fnic;
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport fcid: 0x%x: Canceling fabric disc timer\n",
iport->fcid);
fnic_del_fabric_timer_sync(fnic);
iport->fabric.timer_pending = 0;
}
if (!(iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED))
iport->fabric.retry_counter++;
fabric_tov = jiffies + msecs_to_jiffies(timeout);
mod_timer(&iport->fabric.retry_timer, round_jiffies(fabric_tov));
iport->fabric.timer_pending = 1;
FNIC_FCS_DBG(KERN_INFO, fnic,
"fabric timer is %d ", timeout);
}
static void
fdls_start_tport_timer(struct fnic_iport_s *iport,
struct fnic_tport_s *tport, int timeout)
{
u64 fabric_tov;
struct fnic *fnic = iport->fnic;
if (tport->timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport fcid 0x%x: Canceling disc timer\n",
tport->fcid);
fnic_del_tport_timer_sync(fnic, tport);
tport->timer_pending = 0;
}
if (!(tport->flags & FNIC_FDLS_TGT_ABORT_ISSUED))
tport->retry_counter++;
fabric_tov = jiffies + msecs_to_jiffies(timeout);
mod_timer(&tport->retry_timer, round_jiffies(fabric_tov));
tport->timer_pending = 1;
}
void fdls_init_plogi_frame(uint8_t *frame,
struct fnic_iport_s *iport)
{
struct fc_std_flogi *pplogi;
uint8_t s_id[3];
pplogi = (struct fc_std_flogi *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*pplogi = (struct fc_std_flogi) {
.fchdr = {.fh_r_ctl = FC_RCTL_ELS_REQ, .fh_d_id = {0xFF, 0xFF, 0xFC},
.fh_type = FC_TYPE_ELS, .fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)},
.els = {
.fl_cmd = ELS_PLOGI,
.fl_csp = {.sp_hi_ver = FNIC_FC_PH_VER_HI,
.sp_lo_ver = FNIC_FC_PH_VER_LO,
.sp_bb_cred = cpu_to_be16(FNIC_FC_B2B_CREDIT),
.sp_features = cpu_to_be16(FC_SP_FT_CIRO),
.sp_bb_data = cpu_to_be16(FNIC_FC_B2B_RDF_SZ),
.sp_tot_seq = cpu_to_be16(FNIC_FC_CONCUR_SEQS),
.sp_rel_off = cpu_to_be16(FNIC_FC_RO_INFO),
.sp_e_d_tov = cpu_to_be32(FC_DEF_E_D_TOV)},
.fl_cssp[2].cp_class = cpu_to_be16(FC_CPC_VALID | FC_CPC_SEQ),
.fl_cssp[2].cp_rdfs = cpu_to_be16(0x800),
.fl_cssp[2].cp_con_seq = cpu_to_be16(0xFF),
.fl_cssp[2].cp_open_seq = 1}
};
FNIC_STD_SET_NPORT_NAME(&pplogi->els.fl_wwpn, iport->wwpn);
FNIC_STD_SET_NODE_NAME(&pplogi->els.fl_wwnn, iport->wwnn);
FNIC_LOGI_SET_RDF_SIZE(pplogi->els, iport->max_payload_size);
hton24(s_id, iport->fcid);
FNIC_STD_SET_S_ID(pplogi->fchdr, s_id);
}
static void fdls_init_els_acc_frame(uint8_t *frame,
struct fnic_iport_s *iport)
{
struct fc_std_els_acc_rsp *pels_acc;
uint8_t s_id[3];
pels_acc = (struct fc_std_els_acc_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*pels_acc = (struct fc_std_els_acc_rsp) {
.fchdr = {.fh_r_ctl = FC_RCTL_ELS_REP,
.fh_type = FC_TYPE_ELS, .fh_f_ctl = {FNIC_ELS_REP_FCTL, 0, 0}},
.acc.la_cmd = ELS_LS_ACC,
};
hton24(s_id, iport->fcid);
FNIC_STD_SET_S_ID(pels_acc->fchdr, s_id);
FNIC_STD_SET_RX_ID(pels_acc->fchdr, FNIC_UNASSIGNED_RXID);
}
static void fdls_init_els_rjt_frame(uint8_t *frame,
struct fnic_iport_s *iport)
{
struct fc_std_els_rjt_rsp *pels_rjt;
pels_rjt = (struct fc_std_els_rjt_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*pels_rjt = (struct fc_std_els_rjt_rsp) {
.fchdr = {.fh_r_ctl = FC_RCTL_ELS_REP, .fh_type = FC_TYPE_ELS,
.fh_f_ctl = {FNIC_ELS_REP_FCTL, 0, 0}},
.rej.er_cmd = ELS_LS_RJT,
};
FNIC_STD_SET_RX_ID(pels_rjt->fchdr, FNIC_UNASSIGNED_RXID);
}
static void fdls_init_logo_frame(uint8_t *frame,
struct fnic_iport_s *iport)
{
struct fc_std_logo *plogo;
uint8_t s_id[3];
plogo = (struct fc_std_logo *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*plogo = (struct fc_std_logo) {
.fchdr = {.fh_r_ctl = FC_RCTL_ELS_REQ, .fh_type = FC_TYPE_ELS,
.fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0}},
.els.fl_cmd = ELS_LOGO,
};
hton24(s_id, iport->fcid);
FNIC_STD_SET_S_ID(plogo->fchdr, s_id);
memcpy(plogo->els.fl_n_port_id, s_id, 3);
FNIC_STD_SET_NPORT_NAME(&plogo->els.fl_n_port_wwn,
iport->wwpn);
}
static void fdls_init_fabric_abts_frame(uint8_t *frame,
struct fnic_iport_s *iport)
{
struct fc_frame_header *pfabric_abts;
pfabric_abts = (struct fc_frame_header *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*pfabric_abts = (struct fc_frame_header) {
.fh_r_ctl = FC_RCTL_BA_ABTS, /* ABTS */
.fh_s_id = {0x00, 0x00, 0x00},
.fh_cs_ctl = 0x00, .fh_type = FC_TYPE_BLS,
.fh_f_ctl = {FNIC_REQ_ABTS_FCTL, 0, 0}, .fh_seq_id = 0x00,
.fh_df_ctl = 0x00, .fh_seq_cnt = 0x0000,
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID),
.fh_parm_offset = 0x00000000, /* bit:0 = 0 Abort a exchange */
};
}
static void fdls_set_frame_type(struct fnic *fnic, uint8_t *frame_type)
{
if (IS_FNIC_FCP_INITIATOR(fnic))
*frame_type = FC_TYPE_FCP;
else if (IS_FNIC_NVME_INITIATOR(fnic))
*frame_type = FC_TYPE_NVME;
}
static void fdls_set_feature_type(struct fnic *fnic, uint8_t *feature_type)
{
if (IS_FNIC_FCP_INITIATOR(fnic))
*feature_type = FCP_FEAT_INIT;
else if (IS_FNIC_NVME_INITIATOR(fnic))
*feature_type = FNIC_NVME_FEAT_INIT;
}
static void
fdls_send_rscn_resp(struct fnic_iport_s *iport,
struct fc_frame_header *rscn_fchdr)
{
uint8_t *frame;
struct fc_std_els_acc_rsp *pels_acc;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_els_acc_rsp);
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send RSCN response");
return;
}
pels_acc = (struct fc_std_els_acc_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_els_acc_frame(frame, iport);
FNIC_STD_SET_D_ID(pels_acc->fchdr, rscn_fchdr->fh_s_id);
oxid = FNIC_STD_GET_OX_ID(rscn_fchdr);
FNIC_STD_SET_OX_ID(pels_acc->fchdr, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send RSCN response with oxid: 0x%x",
iport->fcid, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
}
static void
fdls_send_logo_resp(struct fnic_iport_s *iport,
struct fc_frame_header *req_fchdr)
{
uint8_t *frame;
struct fc_std_els_acc_rsp *plogo_resp;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_els_acc_rsp);
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send LOGO response");
return;
}
plogo_resp = (struct fc_std_els_acc_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_els_acc_frame(frame, iport);
FNIC_STD_SET_D_ID(plogo_resp->fchdr, req_fchdr->fh_s_id);
oxid = FNIC_STD_GET_OX_ID(req_fchdr);
FNIC_STD_SET_OX_ID(plogo_resp->fchdr, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send LOGO response with oxid: 0x%x",
iport->fcid, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
}
int fdls_send_ls_req_abts(struct fnic_iport_s *iport,
struct fnic_tport_s *tport, unsigned int oxid)
{
uint8_t *frame;
uint8_t s_id[3];
uint8_t d_id[3];
struct fnic *fnic = iport->fnic;
struct fc_frame_header *pls_req_abts;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_frame_header);
int ret;
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send ls req ABTS");
return -ENOMEM;
}
pls_req_abts = (struct fc_frame_header *) (frame +
FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_fabric_abts_frame(frame, iport);
hton24(s_id, iport->fcid);
hton24(d_id, tport->fcid);
FNIC_STD_SET_S_ID(*pls_req_abts, s_id);
FNIC_STD_SET_D_ID(*pls_req_abts, d_id);
FNIC_STD_SET_OX_ID(*pls_req_abts, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport 0x%x: tport: 0x%x FDLS sending ls req abts with oxid: 0x%x",
iport->fcid, tport->fcid, oxid);
ret = fnic_send_fcoe_frame(iport, frame, frame_size);
if (ret) {
mempool_free(frame, fnic->frame_pool);
return ret;
}
return 0;
}
void
fdls_send_tport_abts(struct fnic_iport_s *iport,
struct fnic_tport_s *tport)
{
uint8_t *frame;
uint8_t s_id[3];
uint8_t d_id[3];
struct fnic *fnic = iport->fnic;
struct fc_frame_header *ptport_abts;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_frame_header);
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send tport ABTS");
return;
}
ptport_abts = (struct fc_frame_header *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*ptport_abts = (struct fc_frame_header) {
.fh_r_ctl = FC_RCTL_BA_ABTS, /* ABTS */
.fh_cs_ctl = 0x00, .fh_type = FC_TYPE_BLS,
.fh_f_ctl = {FNIC_REQ_ABTS_FCTL, 0, 0}, .fh_seq_id = 0x00,
.fh_df_ctl = 0x00, .fh_seq_cnt = 0x0000,
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID),
.fh_parm_offset = 0x00000000, /* bit:0 = 0 Abort a exchange */
};
hton24(s_id, iport->fcid);
hton24(d_id, tport->fcid);
FNIC_STD_SET_S_ID(*ptport_abts, s_id);
FNIC_STD_SET_D_ID(*ptport_abts, d_id);
tport->flags |= FNIC_FDLS_TGT_ABORT_ISSUED;
FNIC_STD_SET_OX_ID(*ptport_abts, tport->active_oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send tport abts: tport->state: %d ",
iport->fcid, tport->state);
fnic_send_fcoe_frame(iport, frame, frame_size);
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_tport_timer(iport, tport, 2 * iport->e_d_tov);
}
static void fdls_send_fabric_abts(struct fnic_iport_s *iport)
{
uint8_t *frame;
uint8_t s_id[3];
uint8_t d_id[3];
struct fnic *fnic = iport->fnic;
struct fc_frame_header *pfabric_abts;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_frame_header);
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send fabric ABTS");
return;
}
pfabric_abts = (struct fc_frame_header *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_fabric_abts_frame(frame, iport);
hton24(s_id, iport->fcid);
switch (iport->fabric.state) {
case FDLS_STATE_FABRIC_LOGO:
hton24(d_id, FC_FID_FLOGI);
FNIC_STD_SET_D_ID(*pfabric_abts, d_id);
break;
case FDLS_STATE_FABRIC_FLOGI:
hton24(d_id, FC_FID_FLOGI);
FNIC_STD_SET_D_ID(*pfabric_abts, d_id);
break;
case FDLS_STATE_FABRIC_PLOGI:
FNIC_STD_SET_S_ID(*pfabric_abts, s_id);
hton24(d_id, FC_FID_DIR_SERV);
FNIC_STD_SET_D_ID(*pfabric_abts, d_id);
break;
case FDLS_STATE_RPN_ID:
FNIC_STD_SET_S_ID(*pfabric_abts, s_id);
hton24(d_id, FC_FID_DIR_SERV);
FNIC_STD_SET_D_ID(*pfabric_abts, d_id);
break;
case FDLS_STATE_SCR:
FNIC_STD_SET_S_ID(*pfabric_abts, s_id);
hton24(d_id, FC_FID_FCTRL);
FNIC_STD_SET_D_ID(*pfabric_abts, d_id);
break;
case FDLS_STATE_REGISTER_FC4_TYPES:
FNIC_STD_SET_S_ID(*pfabric_abts, s_id);
hton24(d_id, FC_FID_DIR_SERV);
FNIC_STD_SET_D_ID(*pfabric_abts, d_id);
break;
case FDLS_STATE_REGISTER_FC4_FEATURES:
FNIC_STD_SET_S_ID(*pfabric_abts, s_id);
hton24(d_id, FC_FID_DIR_SERV);
FNIC_STD_SET_D_ID(*pfabric_abts, d_id);
break;
case FDLS_STATE_GPN_FT:
FNIC_STD_SET_S_ID(*pfabric_abts, s_id);
hton24(d_id, FC_FID_DIR_SERV);
FNIC_STD_SET_D_ID(*pfabric_abts, d_id);
break;
default:
return;
}
oxid = iport->active_oxid_fabric_req;
FNIC_STD_SET_OX_ID(*pfabric_abts, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send fabric abts. iport->fabric.state: %d oxid: 0x%x",
iport->fcid, iport->fabric.state, oxid);
iport->fabric.flags |= FNIC_FDLS_FABRIC_ABORT_ISSUED;
fnic_send_fcoe_frame(iport, frame, frame_size);
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_fabric_timer(iport, 2 * iport->e_d_tov);
iport->fabric.timer_pending = 1;
}
static uint8_t *fdls_alloc_init_fdmi_abts_frame(struct fnic_iport_s *iport,
uint16_t oxid)
{
struct fc_frame_header *pfdmi_abts;
uint8_t d_id[3];
uint8_t *frame;
struct fnic *fnic = iport->fnic;
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send FDMI ABTS");
return NULL;
}
pfdmi_abts = (struct fc_frame_header *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_fabric_abts_frame(frame, iport);
hton24(d_id, FC_FID_MGMT_SERV);
FNIC_STD_SET_D_ID(*pfdmi_abts, d_id);
FNIC_STD_SET_OX_ID(*pfdmi_abts, oxid);
return frame;
}
static void fdls_send_fdmi_abts(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fnic *fnic = iport->fnic;
unsigned long fdmi_tov;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_frame_header);
if (iport->fabric.fdmi_pending & FDLS_FDMI_PLOGI_PENDING) {
frame = fdls_alloc_init_fdmi_abts_frame(iport,
iport->active_oxid_fdmi_plogi);
if (frame == NULL)
return;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send FDMI PLOGI abts. iport->fabric.state: %d oxid: 0x%x",
iport->fcid, iport->fabric.state, iport->active_oxid_fdmi_plogi);
fnic_send_fcoe_frame(iport, frame, frame_size);
} else {
if (iport->fabric.fdmi_pending & FDLS_FDMI_REG_HBA_PENDING) {
frame = fdls_alloc_init_fdmi_abts_frame(iport,
iport->active_oxid_fdmi_rhba);
if (frame == NULL)
return;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send FDMI RHBA abts. iport->fabric.state: %d oxid: 0x%x",
iport->fcid, iport->fabric.state, iport->active_oxid_fdmi_rhba);
fnic_send_fcoe_frame(iport, frame, frame_size);
}
if (iport->fabric.fdmi_pending & FDLS_FDMI_RPA_PENDING) {
frame = fdls_alloc_init_fdmi_abts_frame(iport,
iport->active_oxid_fdmi_rpa);
if (frame == NULL) {
if (iport->fabric.fdmi_pending & FDLS_FDMI_REG_HBA_PENDING)
goto arm_timer;
else
return;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send FDMI RPA abts. iport->fabric.state: %d oxid: 0x%x",
iport->fcid, iport->fabric.state, iport->active_oxid_fdmi_rpa);
fnic_send_fcoe_frame(iport, frame, frame_size);
}
}
arm_timer:
fdmi_tov = jiffies + msecs_to_jiffies(2 * iport->e_d_tov);
mod_timer(&iport->fabric.fdmi_timer, round_jiffies(fdmi_tov));
iport->fabric.fdmi_pending |= FDLS_FDMI_ABORT_PENDING;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: iport->fabric.fdmi_pending: 0x%x",
iport->fcid, iport->fabric.fdmi_pending);
}
static void fdls_send_fabric_flogi(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_flogi *pflogi;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_flogi);
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send FLOGI");
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
pflogi = (struct fc_std_flogi *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*pflogi = (struct fc_std_flogi) {
.fchdr = {.fh_r_ctl = FC_RCTL_ELS_REQ, .fh_d_id = {0xFF, 0xFF, 0xFE},
.fh_type = FC_TYPE_ELS, .fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)},
.els.fl_cmd = ELS_FLOGI,
.els.fl_csp = {.sp_hi_ver = FNIC_FC_PH_VER_HI,
.sp_lo_ver = FNIC_FC_PH_VER_LO,
.sp_bb_cred = cpu_to_be16(FNIC_FC_B2B_CREDIT),
.sp_bb_data = cpu_to_be16(FNIC_FC_B2B_RDF_SZ)},
.els.fl_cssp[2].cp_class = cpu_to_be16(FC_CPC_VALID | FC_CPC_SEQ)
};
FNIC_STD_SET_NPORT_NAME(&pflogi->els.fl_wwpn, iport->wwpn);
FNIC_STD_SET_NODE_NAME(&pflogi->els.fl_wwnn, iport->wwnn);
FNIC_LOGI_SET_RDF_SIZE(pflogi->els, iport->max_payload_size);
FNIC_LOGI_SET_R_A_TOV(pflogi->els, iport->r_a_tov);
FNIC_LOGI_SET_E_D_TOV(pflogi->els, iport->e_d_tov);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FABRIC_FLOGI,
&iport->active_oxid_fabric_req);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send FLOGI",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
FNIC_STD_SET_OX_ID(pflogi->fchdr, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send fabric FLOGI with oxid: 0x%x", iport->fcid,
oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
atomic64_inc(&iport->iport_stats.fabric_flogi_sent);
err_out:
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_fabric_timer(iport, 2 * iport->e_d_tov);
}
static void fdls_send_fabric_plogi(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_flogi *pplogi;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_flogi);
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send PLOGI");
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
pplogi = (struct fc_std_flogi *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_plogi_frame(frame, iport);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FABRIC_PLOGI,
&iport->active_oxid_fabric_req);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send fabric PLOGI",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
FNIC_STD_SET_OX_ID(pplogi->fchdr, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send fabric PLOGI with oxid: 0x%x", iport->fcid,
oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
atomic64_inc(&iport->iport_stats.fabric_plogi_sent);
err_out:
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_fabric_timer(iport, 2 * iport->e_d_tov);
}
static void fdls_send_fdmi_plogi(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_flogi *pplogi;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_flogi);
uint8_t d_id[3];
u64 fdmi_tov;
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send FDMI PLOGI");
goto err_out;
}
pplogi = (struct fc_std_flogi *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_plogi_frame(frame, iport);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FDMI_PLOGI,
&iport->active_oxid_fdmi_plogi);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send FDMI PLOGI",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
goto err_out;
}
FNIC_STD_SET_OX_ID(pplogi->fchdr, oxid);
hton24(d_id, FC_FID_MGMT_SERV);
FNIC_STD_SET_D_ID(pplogi->fchdr, d_id);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send FDMI PLOGI with oxid: 0x%x",
iport->fcid, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
err_out:
fdmi_tov = jiffies + msecs_to_jiffies(2 * iport->e_d_tov);
mod_timer(&iport->fabric.fdmi_timer, round_jiffies(fdmi_tov));
iport->fabric.fdmi_pending = FDLS_FDMI_PLOGI_PENDING;
}
static void fdls_send_rpn_id(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_rpn_id *prpn_id;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_rpn_id);
uint8_t fcid[3];
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send RPN_ID");
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
prpn_id = (struct fc_std_rpn_id *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*prpn_id = (struct fc_std_rpn_id) {
.fchdr = {.fh_r_ctl = FC_RCTL_DD_UNSOL_CTL,
.fh_d_id = {0xFF, 0xFF, 0xFC}, .fh_type = FC_TYPE_CT,
.fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)},
.fc_std_ct_hdr = {.ct_rev = FC_CT_REV, .ct_fs_type = FC_FST_DIR,
.ct_fs_subtype = FC_NS_SUBTYPE,
.ct_cmd = cpu_to_be16(FC_NS_RPN_ID)}
};
hton24(fcid, iport->fcid);
FNIC_STD_SET_S_ID(prpn_id->fchdr, fcid);
FNIC_STD_SET_PORT_ID(prpn_id->rpn_id, fcid);
FNIC_STD_SET_PORT_NAME(prpn_id->rpn_id, iport->wwpn);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FABRIC_RPN,
&iport->active_oxid_fabric_req);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send RPN_ID",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
FNIC_STD_SET_OX_ID(prpn_id->fchdr, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send RPN ID with oxid: 0x%x", iport->fcid,
oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
err_out:
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_fabric_timer(iport, 2 * iport->e_d_tov);
}
static void fdls_send_scr(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_scr *pscr;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_scr);
uint8_t fcid[3];
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send SCR");
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
pscr = (struct fc_std_scr *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*pscr = (struct fc_std_scr) {
.fchdr = {.fh_r_ctl = FC_RCTL_ELS_REQ,
.fh_d_id = {0xFF, 0xFF, 0xFD}, .fh_type = FC_TYPE_ELS,
.fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)},
.scr = {.scr_cmd = ELS_SCR,
.scr_reg_func = ELS_SCRF_FULL}
};
hton24(fcid, iport->fcid);
FNIC_STD_SET_S_ID(pscr->fchdr, fcid);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FABRIC_SCR,
&iport->active_oxid_fabric_req);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send SCR",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
FNIC_STD_SET_OX_ID(pscr->fchdr, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send SCR with oxid: 0x%x", iport->fcid,
oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
atomic64_inc(&iport->iport_stats.fabric_scr_sent);
err_out:
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_fabric_timer(iport, 2 * iport->e_d_tov);
}
static void fdls_send_gpn_ft(struct fnic_iport_s *iport, int fdls_state)
{
uint8_t *frame;
struct fc_std_gpn_ft *pgpn_ft;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_gpn_ft);
uint8_t fcid[3];
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send GPN FT");
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
pgpn_ft = (struct fc_std_gpn_ft *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*pgpn_ft = (struct fc_std_gpn_ft) {
.fchdr = {.fh_r_ctl = FC_RCTL_DD_UNSOL_CTL,
.fh_d_id = {0xFF, 0xFF, 0xFC}, .fh_type = FC_TYPE_CT,
.fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)},
.fc_std_ct_hdr = {.ct_rev = FC_CT_REV, .ct_fs_type = FC_FST_DIR,
.ct_fs_subtype = FC_NS_SUBTYPE,
.ct_cmd = cpu_to_be16(FC_NS_GPN_FT)}
};
fdls_set_frame_type(fnic, &pgpn_ft->gpn_ft.fn_fc4_type);
hton24(fcid, iport->fcid);
FNIC_STD_SET_S_ID(pgpn_ft->fchdr, fcid);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FABRIC_GPN_FT,
&iport->active_oxid_fabric_req);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send GPN FT",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
iport->fabric.flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
FNIC_STD_SET_OX_ID(pgpn_ft->fchdr, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send GPN FT with oxid: 0x%x", iport->fcid,
oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
err_out:
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_fabric_timer(iport, 2 * iport->e_d_tov);
fdls_set_state((&iport->fabric), fdls_state);
}
static void
fdls_send_tgt_adisc(struct fnic_iport_s *iport, struct fnic_tport_s *tport)
{
uint8_t *frame;
struct fc_std_els_adisc *padisc;
uint8_t s_id[3];
uint8_t d_id[3];
uint16_t oxid;
struct fnic *fnic = iport->fnic;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_els_adisc);
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send TGT ADISC");
tport->flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
padisc = (struct fc_std_els_adisc *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
hton24(s_id, iport->fcid);
hton24(d_id, tport->fcid);
memcpy(padisc->els.adisc_port_id, s_id, 3);
FNIC_STD_SET_S_ID(padisc->fchdr, s_id);
FNIC_STD_SET_D_ID(padisc->fchdr, d_id);
FNIC_STD_SET_F_CTL(padisc->fchdr, FNIC_ELS_REQ_FCTL << 16);
FNIC_STD_SET_R_CTL(padisc->fchdr, FC_RCTL_ELS_REQ);
FNIC_STD_SET_TYPE(padisc->fchdr, FC_TYPE_ELS);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_TGT_ADISC, &tport->active_oxid);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send TGT ADISC",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
tport->flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
FNIC_STD_SET_OX_ID(padisc->fchdr, oxid);
FNIC_STD_SET_RX_ID(padisc->fchdr, FNIC_UNASSIGNED_RXID);
tport->flags &= ~FNIC_FDLS_TGT_ABORT_ISSUED;
FNIC_STD_SET_NPORT_NAME(&padisc->els.adisc_wwpn,
iport->wwpn);
FNIC_STD_SET_NODE_NAME(&padisc->els.adisc_wwnn,
iport->wwnn);
padisc->els.adisc_cmd = ELS_ADISC;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send ADISC to tgt fcid: 0x%x",
iport->fcid, tport->fcid);
atomic64_inc(&iport->iport_stats.tport_adisc_sent);
fnic_send_fcoe_frame(iport, frame, frame_size);
err_out:
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_tport_timer(iport, tport, 2 * iport->e_d_tov);
}
bool fdls_delete_tport(struct fnic_iport_s *iport, struct fnic_tport_s *tport)
{
struct fnic_tport_event_s *tport_del_evt;
struct fnic *fnic = iport->fnic;
if ((tport->state == FDLS_TGT_STATE_OFFLINING)
|| (tport->state == FDLS_TGT_STATE_OFFLINE)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport fcid 0x%x: tport state is offlining/offline\n",
tport->fcid);
return false;
}
fdls_set_tport_state(tport, FDLS_TGT_STATE_OFFLINING);
/*
* By setting this flag, the tport will not be seen in a look-up
* in an RSCN. Even if we move to multithreaded model, this tport
* will be destroyed and a new RSCN will have to create a new one
*/
tport->flags |= FNIC_FDLS_TPORT_TERMINATING;
if (tport->timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport fcid 0x%x: Canceling disc timer\n",
tport->fcid);
fnic_del_tport_timer_sync(fnic, tport);
tport->timer_pending = 0;
}
if (IS_FNIC_FCP_INITIATOR(fnic)) {
spin_unlock_irqrestore(&fnic->fnic_lock, fnic->lock_flags);
fnic_rport_exch_reset(iport->fnic, tport->fcid);
spin_lock_irqsave(&fnic->fnic_lock, fnic->lock_flags);
} else if (IS_FNIC_NVME_INITIATOR(fnic)) {
spin_unlock_irqrestore(&fnic->fnic_lock, fnic->lock_flags);
nvfnic_exch_reset(iport, tport);
spin_lock_irqsave(&fnic->fnic_lock, fnic->lock_flags);
}
if ((tport->flags & FNIC_FDLS_SCSI_REGISTERED) ||
(tport->flags & FNIC_FDLS_NVME_REGISTERED)) {
tport_del_evt =
kzalloc_obj(struct fnic_tport_event_s, GFP_ATOMIC);
if (!tport_del_evt) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport: 0x%x tport 0x%x: Failed to allocate memory\n",
iport->fcid, tport->fcid);
return false;
}
tport_del_evt->event = TGT_EV_RPORT_DEL;
tport_del_evt->arg1 = (void *) tport;
list_add_tail(&tport_del_evt->links, &fnic->tport_event_list);
queue_work(fnic_event_queue, &fnic->tport_work);
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport 0x%x not registered, freeing locally\n",
tport->fcid);
list_del(&tport->links);
kfree(tport);
}
return true;
}
static void
fdls_send_tgt_plogi(struct fnic_iport_s *iport, struct fnic_tport_s *tport)
{
uint8_t *frame;
struct fc_std_flogi *pplogi;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_flogi);
uint8_t d_id[3];
uint32_t timeout;
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send TGT PLOGI");
tport->flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
pplogi = (struct fc_std_flogi *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_plogi_frame(frame, iport);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_TGT_PLOGI, &tport->active_oxid);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate oxid to send PLOGI to fcid: 0x%x",
iport->fcid, tport->fcid);
mempool_free(frame, fnic->frame_pool);
tport->flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
FNIC_STD_SET_OX_ID(pplogi->fchdr, oxid);
tport->flags &= ~FNIC_FDLS_TGT_ABORT_ISSUED;
hton24(d_id, tport->fcid);
FNIC_STD_SET_D_ID(pplogi->fchdr, d_id);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send tgt PLOGI to tgt: 0x%x with oxid: 0x%x",
iport->fcid, tport->fcid, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
atomic64_inc(&iport->iport_stats.tport_plogi_sent);
err_out:
timeout = max(2 * iport->e_d_tov, iport->plogi_timeout);
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_tport_timer(iport, tport, timeout);
}
static uint16_t
fnic_fc_plogi_rsp_rdf(struct fnic_iport_s *iport,
struct fc_std_flogi *plogi_rsp)
{
uint16_t b2b_rdf_size =
be16_to_cpu(FNIC_LOGI_RDF_SIZE(plogi_rsp->els));
uint16_t spc3_rdf_size =
be16_to_cpu(plogi_rsp->els.fl_cssp[2].cp_rdfs) & FNIC_FC_C3_RDF;
struct fnic *fnic = iport->fnic;
FNIC_FCS_DBG(KERN_INFO, fnic,
"MFS: b2b_rdf_size: 0x%x spc3_rdf_size: 0x%x",
b2b_rdf_size, spc3_rdf_size);
return min(b2b_rdf_size, spc3_rdf_size);
}
static void fdls_send_register_fc4_types(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_rft_id *prft_id;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_rft_id);
uint8_t fcid[3];
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send RFT");
return;
}
prft_id = (struct fc_std_rft_id *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*prft_id = (struct fc_std_rft_id) {
.fchdr = {.fh_r_ctl = FC_RCTL_DD_UNSOL_CTL,
.fh_d_id = {0xFF, 0xFF, 0xFC}, .fh_type = FC_TYPE_CT,
.fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)},
.fc_std_ct_hdr = {.ct_rev = FC_CT_REV, .ct_fs_type = FC_FST_DIR,
.ct_fs_subtype = FC_NS_SUBTYPE,
.ct_cmd = cpu_to_be16(FC_NS_RFT_ID)}
};
hton24(fcid, iport->fcid);
FNIC_STD_SET_S_ID(prft_id->fchdr, fcid);
FNIC_STD_SET_PORT_ID(prft_id->rft_id, fcid);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FABRIC_RFT,
&iport->active_oxid_fabric_req);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send RFT",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
return;
}
FNIC_STD_SET_OX_ID(prft_id->fchdr, oxid);
if (IS_FNIC_NVME_INITIATOR(fnic))
prft_id->rft_id.fr_fts.ff_type_map[FC_TYPE_NVME / FC_NS_BPW] =
cpu_to_be32(1 << (FC_TYPE_NVME % FC_NS_BPW));
else if (IS_FNIC_FCP_INITIATOR(fnic))
prft_id->rft_id.fr_fts.ff_type_map[FC_TYPE_FCP / FC_NS_BPW] =
cpu_to_be32(1 << (FC_TYPE_FCP % FC_NS_BPW));
prft_id->rft_id.fr_fts.ff_type_map[FC_TYPE_CT / FC_NS_BPW] |=
cpu_to_be32(1 << (FC_TYPE_CT % FC_NS_BPW));
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send RFT 0x%08x 0x%08x 0x%08x with oxid: 0x%x",
iport->fcid, prft_id->rft_id.fr_fts.ff_type_map[0],
prft_id->rft_id.fr_fts.ff_type_map[1],
prft_id->rft_id.fr_fts.ff_type_map[2],
oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_fabric_timer(iport, 2 * iport->e_d_tov);
}
static void fdls_send_register_fc4_features(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_rff_id *prff_id;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_rff_id);
uint8_t fcid[3];
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send RFF");
return;
}
prff_id = (struct fc_std_rff_id *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*prff_id = (struct fc_std_rff_id) {
.fchdr = {.fh_r_ctl = FC_RCTL_DD_UNSOL_CTL,
.fh_d_id = {0xFF, 0xFF, 0xFC}, .fh_type = FC_TYPE_CT,
.fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)},
.fc_std_ct_hdr = {.ct_rev = FC_CT_REV, .ct_fs_type = FC_FST_DIR,
.ct_fs_subtype = FC_NS_SUBTYPE,
.ct_cmd = cpu_to_be16(FC_NS_RFF_ID)},
};
fdls_set_frame_type(fnic, &prff_id->rff_id.fr_type);
fdls_set_feature_type(fnic, &prff_id->rff_id.fr_feat);
hton24(fcid, iport->fcid);
FNIC_STD_SET_S_ID(prff_id->fchdr, fcid);
FNIC_STD_SET_PORT_ID(prff_id->rff_id, fcid);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FABRIC_RFF,
&iport->active_oxid_fabric_req);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send RFF",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
return;
}
FNIC_STD_SET_OX_ID(prff_id->fchdr, oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send RFF with oxid: 0x%x type 0%x feat 0%x",
iport->fcid, oxid, prff_id->rff_id.fr_type,
prff_id->rff_id.fr_feat);
fnic_send_fcoe_frame(iport, frame, frame_size);
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_fabric_timer(iport, 2 * iport->e_d_tov);
}
static void
fdls_send_tgt_prli(struct fnic_iport_s *iport, struct fnic_tport_s *tport)
{
uint8_t *frame;
struct fc_std_els_prli *pprli;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_els_prli);
uint8_t s_id[3];
uint8_t d_id[3];
uint32_t timeout;
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send TGT PRLI");
tport->flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
pprli = (struct fc_std_els_prli *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*pprli = (struct fc_std_els_prli) {
.fchdr = {.fh_r_ctl = FC_RCTL_ELS_REQ, .fh_type = FC_TYPE_ELS,
.fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)},
.els_prli = {.prli_cmd = ELS_PRLI},
.sp = {.spp_params = cpu_to_be32(iport->service_params)}
};
fdls_set_frame_type(fnic, &pprli->sp.spp_type);
if (IS_FNIC_FCP_INITIATOR(fnic)) {
pprli->els_prli.prli_spp_len = 16;
pprli->els_prli.prli_len = cpu_to_be16(0x14);
pprli->sp.spp_flags = FC_SPP_EST_IMG_PAIR;
} else if (IS_FNIC_NVME_INITIATOR(fnic)) {
/* Per FC-NVMe, Establish Image Pair must not be set for NVMe PRLI. */
pprli->els_prli.prli_spp_len = 20;
pprli->els_prli.prli_len = cpu_to_be16(0x18);
}
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_TGT_PRLI, &tport->active_oxid);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"0x%x: Failed to allocate OXID to send TGT PRLI to 0x%x",
iport->fcid, tport->fcid);
mempool_free(frame, fnic->frame_pool);
tport->flags |= FNIC_FDLS_RETRY_FRAME;
goto err_out;
}
tport->flags &= ~FNIC_FDLS_TGT_ABORT_ISSUED;
hton24(s_id, iport->fcid);
hton24(d_id, tport->fcid);
FNIC_STD_SET_OX_ID(pprli->fchdr, oxid);
FNIC_STD_SET_S_ID(pprli->fchdr, s_id);
FNIC_STD_SET_D_ID(pprli->fchdr, d_id);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send PRLI to tgt: 0x%x with oxid: 0x%x",
iport->fcid, tport->fcid, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
atomic64_inc(&iport->iport_stats.tport_prli_sent);
err_out:
timeout = max(2 * iport->e_d_tov, iport->plogi_timeout);
/* Even if fnic_send_fcoe_frame() fails we want to retry after timeout */
fdls_start_tport_timer(iport, tport, timeout);
}
/**
* fdls_send_fabric_logo - Send flogo to the fcf
* @iport: Handle to fnic iport
*
* This function does not change or check the fabric state.
* It the caller's responsibility to set the appropriate iport fabric
* state when this is called. Normally it is FDLS_STATE_FABRIC_LOGO.
* Currently this assumes to be called with fnic lock held.
*/
void fdls_send_fabric_logo(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_logo *plogo;
struct fnic *fnic = iport->fnic;
uint8_t d_id[3];
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_logo);
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send fabric LOGO");
return;
}
plogo = (struct fc_std_logo *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_logo_frame(frame, iport);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FABRIC_LOGO,
&iport->active_oxid_fabric_req);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send fabric LOGO",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
return;
}
FNIC_STD_SET_OX_ID(plogo->fchdr, oxid);
hton24(d_id, FC_FID_FLOGI);
FNIC_STD_SET_D_ID(plogo->fchdr, d_id);
iport->fabric.flags &= ~FNIC_FDLS_FABRIC_ABORT_ISSUED;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send fabric LOGO with oxid: 0x%x",
iport->fcid, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
fdls_start_fabric_timer(iport, 2 * iport->e_d_tov);
}
/**
* fdls_tgt_logout - Send plogo to the remote port
* @iport: Handle to fnic iport
* @tport: Handle to remote port
*
* This function does not change or check the fabric/tport state.
* It the caller's responsibility to set the appropriate tport/fabric
* state when this is called. Normally that is fdls_tgt_state_plogo.
* This could be used to send plogo to nameserver process
* also not just target processes
*/
void fdls_tgt_logout(struct fnic_iport_s *iport, struct fnic_tport_s *tport)
{
uint8_t *frame;
struct fc_std_logo *plogo;
struct fnic *fnic = iport->fnic;
uint8_t d_id[3];
uint16_t oxid;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_logo);
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send fabric LOGO");
return;
}
plogo = (struct fc_std_logo *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_logo_frame(frame, iport);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_TGT_LOGO, &tport->active_oxid);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send tgt LOGO",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
return;
}
FNIC_STD_SET_OX_ID(plogo->fchdr, oxid);
hton24(d_id, tport->fcid);
FNIC_STD_SET_D_ID(plogo->fchdr, d_id);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send tgt LOGO with oxid: 0x%x",
iport->fcid, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
atomic64_inc(&iport->iport_stats.tport_logo_sent);
}
static void fdls_tgt_discovery_start(struct fnic_iport_s *iport)
{
struct fnic_tport_s *tport, *next;
u32 old_link_down_cnt = iport->fnic->link_down_cnt;
struct fnic *fnic = iport->fnic;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Starting FDLS target discovery", iport->fcid);
list_for_each_entry_safe(tport, next, &iport->tport_list, links) {
if ((old_link_down_cnt != iport->fnic->link_down_cnt)
|| (iport->state != FNIC_IPORT_STATE_READY)) {
break;
}
/* if we marked the tport as deleted due to GPN_FT
* We should not send ADISC anymore
*/
if ((tport->state == FDLS_TGT_STATE_OFFLINING) ||
(tport->state == FDLS_TGT_STATE_OFFLINE))
continue;
/* For tports which have received RSCN */
if (tport->flags & FNIC_FDLS_TPORT_SEND_ADISC) {
tport->retry_counter = 0;
fdls_set_tport_state(tport, FDLS_TGT_STATE_ADISC);
tport->flags &= ~FNIC_FDLS_TPORT_SEND_ADISC;
fdls_send_tgt_adisc(iport, tport);
continue;
}
if (fdls_get_tport_state(tport) != FDLS_TGT_STATE_INIT) {
/* Not a new port, skip */
continue;
}
tport->retry_counter = 0;
fdls_set_tport_state(tport, FDLS_TGT_STATE_PLOGI);
fdls_send_tgt_plogi(iport, tport);
}
fdls_set_state((&iport->fabric), FDLS_STATE_TGT_DISCOVERY);
}
/*
* Function to restart the IT nexus if we received any out of
* sequence PLOGI/PRLI response from the target.
* The memory for the new tport structure is allocated
* inside fdls_create_tport and added to the iport's tport list.
* This will get freed later during tport_offline/linkdown
* or module unload. The new_tport pointer will go out of scope
* safely since the memory it is
* pointing to it will be freed later
*/
static void fdls_target_restart_nexus(struct fnic_tport_s *tport)
{
struct fnic_iport_s *iport = tport->iport;
struct fnic_tport_s *new_tport = NULL;
uint32_t fcid;
uint64_t wwpn;
int nexus_restart_count;
struct fnic *fnic = iport->fnic;
bool retval = true;
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport fcid: 0x%x state: %d restart_count: %d",
tport->fcid, tport->state, tport->nexus_restart_count);
fcid = tport->fcid;
wwpn = tport->wwpn;
nexus_restart_count = tport->nexus_restart_count;
retval = fdls_delete_tport(iport, tport);
if (retval != true) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Error deleting tport: 0x%x", fcid);
return;
}
if (nexus_restart_count >= FNIC_TPORT_MAX_NEXUS_RESTART) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Exceeded nexus restart retries tport: 0x%x",
fcid);
return;
}
/*
* Allocate memory for the new tport and add it to
* iport's tport list.
* This memory will be freed during tport_offline/linkdown
* or module unload. The pointer new_tport is safe to go
* out of scope when this function returns, since the memory
* it is pointing to is guaranteed to be freed later
* as mentioned above.
*/
new_tport = fdls_create_tport(iport, fcid, wwpn);
if (!new_tport) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Error creating new tport: 0x%x", fcid);
return;
}
new_tport->nexus_restart_count = nexus_restart_count + 1;
fdls_send_tgt_plogi(iport, new_tport);
fdls_set_tport_state(new_tport, FDLS_TGT_STATE_PLOGI);
}
struct fnic_tport_s *fnic_find_tport_by_fcid(struct fnic_iport_s *iport,
uint32_t fcid)
{
struct fnic_tport_s *tport, *next;
list_for_each_entry_safe(tport, next, &(iport->tport_list), links) {
if ((tport->fcid == fcid)
&& !(tport->flags & FNIC_FDLS_TPORT_TERMINATING))
return tport;
}
return NULL;
}
static struct fnic_tport_s *fdls_create_tport(struct fnic_iport_s *iport,
uint32_t fcid, uint64_t wwpn)
{
struct fnic_tport_s *tport;
struct fnic *fnic = iport->fnic;
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDLS create tport: fcid: 0x%x wwpn: 0x%llx", fcid, wwpn);
tport = kzalloc_obj(struct fnic_tport_s, GFP_ATOMIC);
if (!tport) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Memory allocation failure while creating tport: 0x%x\n",
fcid);
return NULL;
}
tport->max_payload_size = FNIC_FCOE_MAX_FRAME_SZ;
tport->r_a_tov = FC_DEF_R_A_TOV;
tport->e_d_tov = FC_DEF_E_D_TOV;
tport->fcid = fcid;
tport->wwpn = wwpn;
tport->iport = iport;
INIT_LIST_HEAD(&tport->ls_req_list);
FNIC_FCS_DBG(KERN_DEBUG, fnic,
"Need to setup tport timer callback");
timer_setup(&tport->retry_timer, fdls_tport_timer_callback, 0);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Added tport 0x%x", tport->fcid);
fdls_set_tport_state(tport, FDLS_TGT_STATE_INIT);
list_add_tail(&tport->links, &iport->tport_list);
atomic_set(&tport->in_flight, 0);
return tport;
}
struct fnic_tport_s *fnic_find_tport_by_wwpn(struct fnic_iport_s *iport,
uint64_t wwpn)
{
struct fnic_tport_s *tport, *next;
list_for_each_entry_safe(tport, next, &(iport->tport_list), links) {
if ((tport->wwpn == wwpn)
&& !(tport->flags & FNIC_FDLS_TPORT_TERMINATING))
return tport;
}
return NULL;
}
static void
fnic_fdmi_attr_set(void *attr_start, u16 type, u16 len,
void *data, u32 *off)
{
u16 size = len + FC_FDMI_ATTR_ENTRY_HEADER_LEN;
struct fc_fdmi_attr_entry *fdmi_attr = (struct fc_fdmi_attr_entry *)
((u8 *)attr_start + *off);
put_unaligned_be16(type, &fdmi_attr->type);
put_unaligned_be16(size, &fdmi_attr->len);
memcpy(fdmi_attr->value, data, len);
*off += size;
}
static void fdls_fdmi_register_hba(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_fdmi_rhba *prhba;
struct fc_fdmi_attr_entry *fdmi_attr;
uint8_t fcid[3];
int err;
struct fnic *fnic = iport->fnic;
struct vnic_devcmd_fw_info *fw_info = NULL;
uint16_t oxid;
u32 attr_off_bytes, len;
u8 data[64];
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET;
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send FDMI RHBA");
return;
}
prhba = (struct fc_std_fdmi_rhba *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*prhba = (struct fc_std_fdmi_rhba) {
.fchdr = {
.fh_r_ctl = FC_RCTL_DD_UNSOL_CTL,
.fh_d_id = {0xFF, 0XFF, 0XFA},
.fh_type = FC_TYPE_CT,
.fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)
},
.fc_std_ct_hdr = {
.ct_rev = FC_CT_REV, .ct_fs_type = FC_FST_MGMT,
.ct_fs_subtype = FC_FDMI_SUBTYPE,
.ct_cmd = cpu_to_be16(FC_FDMI_RHBA)
},
};
hton24(fcid, iport->fcid);
FNIC_STD_SET_S_ID(prhba->fchdr, fcid);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FDMI_RHBA,
&iport->active_oxid_fdmi_rhba);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send FDMI RHBA",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
return;
}
FNIC_STD_SET_OX_ID(prhba->fchdr, oxid);
put_unaligned_be64(iport->wwpn, &prhba->rhba.hbaid.id);
put_unaligned_be32(FNIC_FDMI_NUM_PORTS, &prhba->rhba.port.numport);
put_unaligned_be64(iport->wwpn, &prhba->rhba.port.port[0].portname);
put_unaligned_be32(FNIC_FDMI_NUM_HBA_ATTRS,
&prhba->rhba.hba_attrs.numattrs);
fdmi_attr = prhba->rhba.hba_attrs.attr;
attr_off_bytes = 0;
put_unaligned_be64(iport->wwnn, data);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_NODE_NAME,
FNIC_FDMI_NN_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"NN set, off=%d", attr_off_bytes);
strscpy_pad(data, FNIC_FDMI_MANUFACTURER, FNIC_FDMI_MANU_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_MANUFACTURER,
FNIC_FDMI_MANU_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"MFG set <%s>, off=%d", data, attr_off_bytes);
err = vnic_dev_fw_info(fnic->vdev, &fw_info);
if (!err) {
strscpy_pad(data, fw_info->hw_serial_number,
FNIC_FDMI_SERIAL_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_SERIAL_NUMBER,
FNIC_FDMI_SERIAL_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"SERIAL set <%s>, off=%d", data, attr_off_bytes);
}
if (fnic->subsys_desc_len >= FNIC_FDMI_MODEL_LEN)
fnic->subsys_desc_len = FNIC_FDMI_MODEL_LEN - 1;
strscpy_pad(data, fnic->subsys_desc, FNIC_FDMI_MODEL_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_MODEL, FNIC_FDMI_MODEL_LEN,
data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"MODEL set <%s>, off=%d", data, attr_off_bytes);
strscpy_pad(data, FNIC_FDMI_MODEL_DESCRIPTION, FNIC_FDMI_MODEL_DES_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_MODEL_DES,
FNIC_FDMI_MODEL_DES_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"MODEL_DESC set <%s>, off=%d", data, attr_off_bytes);
if (!err) {
strscpy_pad(data, fw_info->hw_version, FNIC_FDMI_HW_VER_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_HARDWARE_VERSION,
FNIC_FDMI_HW_VER_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"HW_VER set <%s>, off=%d", data, attr_off_bytes);
}
strscpy_pad(data, DRV_VERSION, FNIC_FDMI_DR_VER_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_DRIVER_VERSION,
FNIC_FDMI_DR_VER_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"DRV_VER set <%s>, off=%d", data, attr_off_bytes);
strscpy_pad(data, "N/A", FNIC_FDMI_ROM_VER_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_ROM_VERSION,
FNIC_FDMI_ROM_VER_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"ROM_VER set <%s>, off=%d", data, attr_off_bytes);
if (!err) {
strscpy_pad(data, fw_info->fw_version, FNIC_FDMI_FW_VER_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_FIRMWARE_VERSION,
FNIC_FDMI_FW_VER_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"FW_VER set <%s>, off=%d", data, attr_off_bytes);
}
len = sizeof(struct fc_std_fdmi_rhba) + attr_off_bytes;
frame_size += len;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send FDMI RHBA with oxid: 0x%x fs: %d", iport->fcid,
oxid, frame_size);
fnic_send_fcoe_frame(iport, frame, frame_size);
iport->fabric.fdmi_pending |= FDLS_FDMI_REG_HBA_PENDING;
}
static void fdls_fdmi_register_pa(struct fnic_iport_s *iport)
{
uint8_t *frame;
struct fc_std_fdmi_rpa *prpa;
struct fc_fdmi_attr_entry *fdmi_attr;
uint8_t fcid[3];
struct fnic *fnic = iport->fnic;
u32 port_speed_bm;
u32 port_speed = vnic_dev_port_speed(fnic->vdev);
uint16_t oxid;
u32 attr_off_bytes, len;
u8 tmp_data[16], data[64];
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET;
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send FDMI RPA");
return;
}
prpa = (struct fc_std_fdmi_rpa *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*prpa = (struct fc_std_fdmi_rpa) {
.fchdr = {
.fh_r_ctl = FC_RCTL_DD_UNSOL_CTL,
.fh_d_id = {0xFF, 0xFF, 0xFA},
.fh_type = FC_TYPE_CT,
.fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0},
.fh_rx_id = cpu_to_be16(FNIC_UNASSIGNED_RXID)
},
.fc_std_ct_hdr = {
.ct_rev = FC_CT_REV, .ct_fs_type = FC_FST_MGMT,
.ct_fs_subtype = FC_FDMI_SUBTYPE,
.ct_cmd = cpu_to_be16(FC_FDMI_RPA)
},
};
hton24(fcid, iport->fcid);
FNIC_STD_SET_S_ID(prpa->fchdr, fcid);
oxid = fdls_alloc_oxid(iport, FNIC_FRAME_TYPE_FDMI_RPA,
&iport->active_oxid_fdmi_rpa);
if (oxid == FNIC_UNASSIGNED_OXID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Failed to allocate OXID to send FDMI RPA",
iport->fcid);
mempool_free(frame, fnic->frame_pool);
return;
}
FNIC_STD_SET_OX_ID(prpa->fchdr, oxid);
put_unaligned_be64(iport->wwpn, &prpa->rpa.port.portname);
put_unaligned_be32(FNIC_FDMI_NUM_PORT_ATTRS,
&prpa->rpa.hba_attrs.numattrs);
/* MDS does not support GIGE speed.
* Bit shift standard definitions from scsi_transport_fc.h to
* match FC spec.
*/
switch (port_speed) {
case DCEM_PORTSPEED_10G:
case DCEM_PORTSPEED_20G:
/* There is no bit for 20G */
port_speed_bm = FC_PORTSPEED_10GBIT << PORT_SPEED_BIT_14;
break;
case DCEM_PORTSPEED_25G:
port_speed_bm = FC_PORTSPEED_25GBIT << PORT_SPEED_BIT_8;
break;
case DCEM_PORTSPEED_40G:
case DCEM_PORTSPEED_4x10G:
port_speed_bm = FC_PORTSPEED_40GBIT << PORT_SPEED_BIT_9;
break;
case DCEM_PORTSPEED_100G:
port_speed_bm = FC_PORTSPEED_100GBIT << PORT_SPEED_BIT_8;
break;
default:
port_speed_bm = FC_PORTSPEED_1GBIT << PORT_SPEED_BIT_15;
break;
}
attr_off_bytes = 0;
fdmi_attr = prpa->rpa.hba_attrs.attr;
put_unaligned_be64(iport->wwnn, data);
memset(data, 0, FNIC_FDMI_FC4_LEN);
if (IS_FNIC_FCP_INITIATOR(fnic))
data[2] = 1;
else if (IS_FNIC_NVME_INITIATOR(fnic))
data[6] = 1;
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_FC4_TYPES,
FNIC_FDMI_FC4_LEN, data, &attr_off_bytes);
put_unaligned_be32(port_speed_bm, data);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_SUPPORTED_SPEEDS,
FNIC_FDMI_SUPP_SPEED_LEN, data, &attr_off_bytes);
put_unaligned_be32(port_speed_bm, data);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_CURRENT_SPEED,
FNIC_FDMI_CUR_SPEED_LEN, data, &attr_off_bytes);
put_unaligned_be32(FNIC_FDMI_MFS, data);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_MAX_FRAME_SIZE,
FNIC_FDMI_MFS_LEN, data, &attr_off_bytes);
if (IS_FNIC_FCP_INITIATOR(fnic))
snprintf(tmp_data, FNIC_FDMI_OS_NAME_LEN - 1, "host%d",
fnic->host->host_no);
else if (IS_FNIC_NVME_INITIATOR(fnic))
snprintf(tmp_data, FNIC_FDMI_OS_NAME_LEN - 1, "nvfnic%d",
fnic->fnic_num);
strscpy_pad(data, tmp_data, FNIC_FDMI_OS_NAME_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_OS_NAME,
FNIC_FDMI_OS_NAME_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"OS name set <%s>, off=%d", data, attr_off_bytes);
if (IS_FNIC_FCP_INITIATOR(fnic))
sprintf(fc_host_system_hostname(fnic->host), "%s",
utsname()->nodename);
strscpy_pad(data, utsname()->nodename, FNIC_FDMI_HN_LEN);
fnic_fdmi_attr_set(fdmi_attr, FNIC_FDMI_TYPE_HOST_NAME,
FNIC_FDMI_HN_LEN, data, &attr_off_bytes);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Host name set <%s>, off=%d", data, attr_off_bytes);
len = sizeof(struct fc_std_fdmi_rpa) + attr_off_bytes;
frame_size += len;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send FDMI RPA with oxid: 0x%x fs: %d", iport->fcid,
oxid, frame_size);
fnic_send_fcoe_frame(iport, frame, frame_size);
iport->fabric.fdmi_pending |= FDLS_FDMI_RPA_PENDING;
}
void fdls_fabric_timer_callback(struct timer_list *t)
{
struct fnic_fdls_fabric_s *fabric = timer_container_of(fabric, t,
retry_timer);
struct fnic_iport_s *iport =
container_of(fabric, struct fnic_iport_s, fabric);
struct fnic *fnic = iport->fnic;
unsigned long flags;
FNIC_FCS_DBG(KERN_INFO, fnic,
"tp: %d fab state: %d fab retry counter: %d max_flogi_retries: %d",
iport->fabric.timer_pending, iport->fabric.state,
iport->fabric.retry_counter, iport->max_flogi_retries);
spin_lock_irqsave(&fnic->fnic_lock, flags);
if (!iport->fabric.timer_pending) {
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
return;
}
if (iport->fabric.del_timer_inprogress) {
iport->fabric.del_timer_inprogress = 0;
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
FNIC_FCS_DBG(KERN_INFO, fnic,
"fabric_del_timer inprogress(%d). Skip timer cb",
iport->fabric.del_timer_inprogress);
return;
}
iport->fabric.timer_pending = 0;
/* The fabric state indicates which frames have time out, and we retry */
switch (iport->fabric.state) {
case FDLS_STATE_FABRIC_FLOGI:
/* Flogi received a LS_RJT with busy we retry from here */
if ((iport->fabric.flags & FNIC_FDLS_RETRY_FRAME)
&& (iport->fabric.retry_counter < iport->max_flogi_retries)) {
iport->fabric.flags &= ~FNIC_FDLS_RETRY_FRAME;
fdls_send_fabric_flogi(iport);
} else if (!(iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED)) {
/* Flogi has time out 2*ed_tov send abts */
fdls_send_fabric_abts(iport);
} else {
/* ABTS has timed out
* Mark the OXID to be freed after 2 * r_a_tov and retry the req
*/
fdls_schedule_oxid_free(iport, &iport->active_oxid_fabric_req);
if (iport->fabric.retry_counter < iport->max_flogi_retries) {
iport->fabric.flags &= ~FNIC_FDLS_FABRIC_ABORT_ISSUED;
fdls_send_fabric_flogi(iport);
} else
FNIC_FCS_DBG(KERN_INFO, fnic,
"Exceeded max FLOGI retries");
}
break;
case FDLS_STATE_FABRIC_PLOGI:
/* Plogi received a LS_RJT with busy we retry from here */
if ((iport->fabric.flags & FNIC_FDLS_RETRY_FRAME)
&& (iport->fabric.retry_counter < iport->max_plogi_retries)) {
iport->fabric.flags &= ~FNIC_FDLS_RETRY_FRAME;
fdls_send_fabric_plogi(iport);
} else if (!(iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED)) {
/* Plogi has timed out 2*ed_tov send abts */
fdls_send_fabric_abts(iport);
} else {
/* ABTS has timed out
* Mark the OXID to be freed after 2 * r_a_tov and retry the req
*/
fdls_schedule_oxid_free(iport, &iport->active_oxid_fabric_req);
if (iport->fabric.retry_counter < iport->max_plogi_retries) {
iport->fabric.flags &= ~FNIC_FDLS_FABRIC_ABORT_ISSUED;
fdls_send_fabric_plogi(iport);
} else
FNIC_FCS_DBG(KERN_INFO, fnic,
"Exceeded max PLOGI retries");
}
break;
case FDLS_STATE_RPN_ID:
/* Rpn_id received a LS_RJT with busy we retry from here */
if ((iport->fabric.flags & FNIC_FDLS_RETRY_FRAME)
&& (iport->fabric.retry_counter < FDLS_RETRY_COUNT)) {
iport->fabric.flags &= ~FNIC_FDLS_RETRY_FRAME;
fdls_send_rpn_id(iport);
} else if (!(iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED))
/* RPN has timed out. Send abts */
fdls_send_fabric_abts(iport);
else {
/* ABTS has timed out */
fdls_schedule_oxid_free(iport, &iport->active_oxid_fabric_req);
fnic_fdls_start_plogi(iport); /* go back to fabric Plogi */
}
break;
case FDLS_STATE_SCR:
/* scr received a LS_RJT with busy we retry from here */
if ((iport->fabric.flags & FNIC_FDLS_RETRY_FRAME)
&& (iport->fabric.retry_counter < FDLS_RETRY_COUNT)) {
iport->fabric.flags &= ~FNIC_FDLS_RETRY_FRAME;
fdls_send_scr(iport);
} else if (!(iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED))
/* scr has timed out. Send abts */
fdls_send_fabric_abts(iport);
else {
/* ABTS has timed out */
fdls_schedule_oxid_free(iport, &iport->active_oxid_fabric_req);
FNIC_FCS_DBG(KERN_INFO, fnic,
"ABTS timed out. Starting PLOGI: %p", iport);
fnic_fdls_start_plogi(iport);
}
break;
case FDLS_STATE_REGISTER_FC4_TYPES:
/* scr received a LS_RJT with busy we retry from here */
if ((iport->fabric.flags & FNIC_FDLS_RETRY_FRAME)
&& (iport->fabric.retry_counter < FDLS_RETRY_COUNT)) {
iport->fabric.flags &= ~FNIC_FDLS_RETRY_FRAME;
fdls_send_register_fc4_types(iport);
} else if (!(iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED)) {
/* RFT_ID timed out send abts */
fdls_send_fabric_abts(iport);
} else {
/* ABTS has timed out */
fdls_schedule_oxid_free(iport, &iport->active_oxid_fabric_req);
FNIC_FCS_DBG(KERN_INFO, fnic,
"ABTS timed out. Starting PLOGI: %p", iport);
fnic_fdls_start_plogi(iport); /* go back to fabric Plogi */
}
break;
case FDLS_STATE_REGISTER_FC4_FEATURES:
/* scr received a LS_RJT with busy we retry from here */
if ((iport->fabric.flags & FNIC_FDLS_RETRY_FRAME)
&& (iport->fabric.retry_counter < FDLS_RETRY_COUNT)) {
iport->fabric.flags &= ~FNIC_FDLS_RETRY_FRAME;
fdls_send_register_fc4_features(iport);
} else if (!(iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED))
/* SCR has timed out. Send abts */
fdls_send_fabric_abts(iport);
else {
/* ABTS has timed out */
fdls_schedule_oxid_free(iport, &iport->active_oxid_fabric_req);
FNIC_FCS_DBG(KERN_INFO, fnic,
"ABTS timed out. Starting PLOGI %p", iport);
fnic_fdls_start_plogi(iport); /* go back to fabric Plogi */
}
break;
case FDLS_STATE_RSCN_GPN_FT:
case FDLS_STATE_SEND_GPNFT:
case FDLS_STATE_GPN_FT:
/* GPN_FT received a LS_RJT with busy we retry from here */
if ((iport->fabric.flags & FNIC_FDLS_RETRY_FRAME)
&& (iport->fabric.retry_counter < FDLS_RETRY_COUNT)) {
iport->fabric.flags &= ~FNIC_FDLS_RETRY_FRAME;
fdls_send_gpn_ft(iport, iport->fabric.state);
} else if (!(iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED)) {
/* gpn_ft has timed out. Send abts */
fdls_send_fabric_abts(iport);
} else {
/* ABTS has timed out */
fdls_schedule_oxid_free(iport, &iport->active_oxid_fabric_req);
if (iport->fabric.retry_counter < FDLS_RETRY_COUNT) {
fdls_send_gpn_ft(iport, iport->fabric.state);
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"ABTS timeout for fabric GPN_FT. Check name server: %p",
iport);
}
}
break;
default:
break;
}
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
}
void fdls_fdmi_retry_plogi(struct fnic_iport_s *iport)
{
struct fnic *fnic = iport->fnic;
iport->fabric.fdmi_pending = 0;
/* If max retries not exhausted, start over from fdmi plogi */
if (iport->fabric.fdmi_retry < FDLS_FDMI_MAX_RETRY) {
iport->fabric.fdmi_retry++;
FNIC_FCS_DBG(KERN_INFO, fnic,
"Retry FDMI PLOGI. FDMI retry: %d",
iport->fabric.fdmi_retry);
fdls_send_fdmi_plogi(iport);
}
}
void fdls_fdmi_timer_callback(struct timer_list *t)
{
struct fnic_fdls_fabric_s *fabric = timer_container_of(fabric, t,
fdmi_timer);
struct fnic_iport_s *iport =
container_of(fabric, struct fnic_iport_s, fabric);
struct fnic *fnic = iport->fnic;
unsigned long flags;
spin_lock_irqsave(&fnic->fnic_lock, flags);
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport->fabric.fdmi_pending: 0x%x\n", iport->fabric.fdmi_pending);
if (!iport->fabric.fdmi_pending) {
/* timer expired after fdmi responses received. */
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
return;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport->fabric.fdmi_pending: 0x%x\n", iport->fabric.fdmi_pending);
/* if not abort pending, send an abort */
if (!(iport->fabric.fdmi_pending & FDLS_FDMI_ABORT_PENDING)) {
fdls_send_fdmi_abts(iport);
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
return;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport->fabric.fdmi_pending: 0x%x\n", iport->fabric.fdmi_pending);
/* ABTS pending for an active fdmi request that is pending.
* That means FDMI ABTS timed out
* Schedule to free the OXID after 2*r_a_tov and proceed
*/
if (iport->fabric.fdmi_pending & FDLS_FDMI_PLOGI_PENDING) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDMI PLOGI ABTS timed out. Schedule oxid free: 0x%x\n",
iport->active_oxid_fdmi_plogi);
fdls_schedule_oxid_free(iport, &iport->active_oxid_fdmi_plogi);
} else {
if (iport->fabric.fdmi_pending & FDLS_FDMI_REG_HBA_PENDING) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDMI RHBA ABTS timed out. Schedule oxid free: 0x%x\n",
iport->active_oxid_fdmi_rhba);
fdls_schedule_oxid_free(iport, &iport->active_oxid_fdmi_rhba);
}
if (iport->fabric.fdmi_pending & FDLS_FDMI_RPA_PENDING) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDMI RPA ABTS timed out. Schedule oxid free: 0x%x\n",
iport->active_oxid_fdmi_rpa);
fdls_schedule_oxid_free(iport, &iport->active_oxid_fdmi_rpa);
}
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport->fabric.fdmi_pending: 0x%x\n", iport->fabric.fdmi_pending);
iport->fabric.fdmi_pending = 0;
/* If max retries not exhaused, start over from fdmi plogi */
if (iport->fabric.fdmi_retry < FDLS_FDMI_MAX_RETRY) {
iport->fabric.fdmi_retry++;
FNIC_FCS_DBG(KERN_INFO, fnic,
"retry fdmi timer %d", iport->fabric.fdmi_retry);
fdls_send_fdmi_plogi(iport);
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport->fabric.fdmi_pending: 0x%x\n", iport->fabric.fdmi_pending);
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
}
static void fdls_send_delete_tport_msg(struct fnic_tport_s *tport)
{
struct fnic_iport_s *iport = (struct fnic_iport_s *) tport->iport;
struct fnic *fnic = iport->fnic;
struct fnic_tport_event_s *tport_del_evt;
tport_del_evt = kzalloc_obj(struct fnic_tport_event_s, GFP_ATOMIC);
if (!tport_del_evt) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Failed to allocate memory for tport event fcid: 0x%x",
tport->fcid);
return;
}
tport_del_evt->event = TGT_EV_TPORT_DELETE;
tport_del_evt->arg1 = (void *) tport;
list_add_tail(&tport_del_evt->links, &fnic->tport_event_list);
queue_work(fnic_event_queue, &fnic->tport_work);
}
static void fdls_tport_timer_callback(struct timer_list *t)
{
struct fnic_tport_s *tport = timer_container_of(tport, t, retry_timer);
struct fnic_iport_s *iport = (struct fnic_iport_s *) tport->iport;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
unsigned long flags;
struct fc_frame_header fchdr = {0};
uint8_t fcid[3];
spin_lock_irqsave(&fnic->fnic_lock, flags);
if (!tport->timer_pending) {
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
return;
}
if (iport->state != FNIC_IPORT_STATE_READY) {
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
return;
}
if (tport->del_timer_inprogress) {
tport->del_timer_inprogress = 0;
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport_del_timer inprogress. Skip timer cb tport fcid: 0x%x\n",
tport->fcid);
return;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport fcid: 0x%x timer pending: %d state: %d retry counter: %d",
tport->fcid, tport->timer_pending, tport->state,
tport->retry_counter);
tport->timer_pending = 0;
oxid = tport->active_oxid;
/* We retry plogi/prli/adisc frames depending on the tport state */
switch (tport->state) {
case FDLS_TGT_STATE_PLOGI:
/* PLOGI frame received a LS_RJT with busy, we retry from here */
if ((tport->flags & FNIC_FDLS_RETRY_FRAME)
&& (tport->retry_counter < iport->max_plogi_retries)) {
tport->flags &= ~FNIC_FDLS_RETRY_FRAME;
fdls_send_tgt_plogi(iport, tport);
} else if (!(tport->flags & FNIC_FDLS_TGT_ABORT_ISSUED)) {
/* Plogi frame has timed out, send abts */
fdls_send_tport_abts(iport, tport);
} else if (tport->retry_counter < iport->max_plogi_retries) {
/*
* ABTS has timed out
*/
fdls_schedule_oxid_free(iport, &tport->active_oxid);
fdls_send_tgt_plogi(iport, tport);
} else {
/* exceeded plogi retry count */
fdls_schedule_oxid_free(iport, &tport->active_oxid);
fdls_send_delete_tport_msg(tport);
}
break;
case FDLS_TGT_STATE_PRLI:
/* PRLI received a LS_RJT with busy , hence we retry from here */
if ((tport->flags & FNIC_FDLS_RETRY_FRAME)
&& (tport->retry_counter < FDLS_RETRY_COUNT)) {
tport->flags &= ~FNIC_FDLS_RETRY_FRAME;
fdls_send_tgt_prli(iport, tport);
} else if (!(tport->flags & FNIC_FDLS_TGT_ABORT_ISSUED)) {
/* PRLI has time out, send abts */
fdls_send_tport_abts(iport, tport);
} else {
/* ABTS has timed out for prli, we go back to PLOGI */
fdls_schedule_oxid_free(iport, &tport->active_oxid);
fdls_send_tgt_plogi(iport, tport);
fdls_set_tport_state(tport, FDLS_TGT_STATE_PLOGI);
}
break;
case FDLS_TGT_STATE_ADISC:
/* ADISC timed out send an ABTS */
if (!(tport->flags & FNIC_FDLS_TGT_ABORT_ISSUED)) {
fdls_send_tport_abts(iport, tport);
} else if ((tport->flags & FNIC_FDLS_TGT_ABORT_ISSUED)
&& (tport->retry_counter < FDLS_RETRY_COUNT)) {
/*
* ABTS has timed out
*/
fdls_schedule_oxid_free(iport, &tport->active_oxid);
fdls_send_tgt_adisc(iport, tport);
} else {
/* exceeded retry count */
fdls_schedule_oxid_free(iport, &tport->active_oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"ADISC not responding. Deleting target port: 0x%x",
tport->fcid);
fdls_send_delete_tport_msg(tport);
}
break;
default:
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x timeout tport 0x%x oxid 0x%x state %d\n",
iport->fcid, tport->fcid, oxid, tport->state);
if (IS_FNIC_NVME_INITIATOR(fnic)) {
hton24(fcid, tport->fcid);
FNIC_STD_SET_S_ID(fchdr, fcid);
FNIC_STD_SET_OX_ID(fchdr, oxid);
nvfnic_process_ls_abts_rsp(iport, &fchdr);
}
break;
}
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
}
static void fnic_fdls_start_flogi(struct fnic_iport_s *iport)
{
iport->fabric.retry_counter = 0;
fdls_send_fabric_flogi(iport);
fdls_set_state((&iport->fabric), FDLS_STATE_FABRIC_FLOGI);
iport->fabric.flags = 0;
}
static void fnic_fdls_start_plogi(struct fnic_iport_s *iport)
{
iport->fabric.retry_counter = 0;
fdls_send_fabric_plogi(iport);
fdls_set_state((&iport->fabric), FDLS_STATE_FABRIC_PLOGI);
iport->fabric.flags &= ~FNIC_FDLS_FABRIC_ABORT_ISSUED;
if ((fnic_fdmi_support == 1) && (!(iport->flags & FNIC_FDMI_ACTIVE))) {
/* we can do FDMI at the same time */
iport->fabric.fdmi_retry = 0;
timer_setup(&iport->fabric.fdmi_timer, fdls_fdmi_timer_callback,
0);
fdls_send_fdmi_plogi(iport);
iport->flags |= FNIC_FDMI_ACTIVE;
}
}
static void
fdls_process_tgt_adisc_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
uint32_t tgt_fcid;
struct fnic_tport_s *tport;
uint8_t *fcid;
uint64_t frame_wwnn;
uint64_t frame_wwpn;
uint16_t oxid;
struct fc_std_els_adisc *adisc_rsp = (struct fc_std_els_adisc *)fchdr;
struct fc_std_els_rjt_rsp *els_rjt = (struct fc_std_els_rjt_rsp *)fchdr;
struct fnic *fnic = iport->fnic;
fcid = FNIC_STD_GET_S_ID(fchdr);
tgt_fcid = ntoh24(fcid);
tport = fnic_find_tport_by_fcid(iport, tgt_fcid);
if (!tport) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Tgt ADISC response tport not found: 0x%x", tgt_fcid);
return;
}
if ((iport->state != FNIC_IPORT_STATE_READY)
|| (tport->state != FDLS_TGT_STATE_ADISC)
|| (tport->flags & FNIC_FDLS_TGT_ABORT_ISSUED)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Dropping this ADISC response");
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport state: %d tport state: %d Is abort issued on PRLI? %d",
iport->state, tport->state,
(tport->flags & FNIC_FDLS_TGT_ABORT_ISSUED));
return;
}
if (FNIC_STD_GET_OX_ID(fchdr) != tport->active_oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Dropping frame from target: 0x%x",
tgt_fcid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Reason: Stale ADISC/Aborted ADISC/OOO frame delivery");
return;
}
oxid = FNIC_STD_GET_OX_ID(fchdr);
fdls_free_oxid(iport, oxid, &tport->active_oxid);
switch (adisc_rsp->els.adisc_cmd) {
case ELS_LS_ACC:
atomic64_inc(&iport->iport_stats.tport_adisc_ls_accepts);
if (tport->timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport 0x%p Canceling fabric disc timer\n",
tport);
fnic_del_tport_timer_sync(fnic, tport);
}
tport->timer_pending = 0;
tport->retry_counter = 0;
frame_wwnn = get_unaligned_be64(&adisc_rsp->els.adisc_wwnn);
frame_wwpn = get_unaligned_be64(&adisc_rsp->els.adisc_wwpn);
if ((frame_wwnn == tport->wwnn) && (frame_wwpn == tport->wwpn)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"ADISC accepted from target: 0x%x. Target logged in",
tgt_fcid);
fdls_set_tport_state(tport, FDLS_TGT_STATE_READY);
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Error mismatch frame: ADISC");
}
break;
case ELS_LS_RJT:
atomic64_inc(&iport->iport_stats.tport_adisc_ls_rejects);
if (((els_rjt->rej.er_reason == ELS_RJT_BUSY)
|| (els_rjt->rej.er_reason == ELS_RJT_UNAB))
&& (tport->retry_counter < FDLS_RETRY_COUNT)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"ADISC ret ELS_LS_RJT BUSY. Retry from timer routine: 0x%x",
tgt_fcid);
/* Retry ADISC again from the timer routine. */
tport->flags |= FNIC_FDLS_RETRY_FRAME;
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"ADISC returned ELS_LS_RJT from target: 0x%x",
tgt_fcid);
fdls_delete_tport(iport, tport);
}
break;
}
}
static void
fdls_process_tgt_plogi_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
uint32_t tgt_fcid;
struct fnic_tport_s *tport;
uint8_t *fcid;
uint16_t oxid;
struct fc_std_flogi *plogi_rsp = (struct fc_std_flogi *)fchdr;
struct fc_std_els_rjt_rsp *els_rjt = (struct fc_std_els_rjt_rsp *)fchdr;
uint16_t max_payload_size;
struct fnic *fnic = iport->fnic;
fcid = FNIC_STD_GET_S_ID(fchdr);
tgt_fcid = ntoh24(fcid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDLS processing target PLOGI response: tgt_fcid: 0x%x",
tgt_fcid);
tport = fnic_find_tport_by_fcid(iport, tgt_fcid);
if (!tport) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport not found: 0x%x", tgt_fcid);
return;
}
if ((iport->state != FNIC_IPORT_STATE_READY)
|| (tport->flags & FNIC_FDLS_TGT_ABORT_ISSUED)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Dropping frame! iport state: %d tport state: %d",
iport->state, tport->state);
return;
}
if (tport->state != FDLS_TGT_STATE_PLOGI) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"PLOGI rsp recvd in wrong state. Drop the frame and restart nexus");
fdls_target_restart_nexus(tport);
return;
}
if (FNIC_STD_GET_OX_ID(fchdr) != tport->active_oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"PLOGI response from target: 0x%x. Dropping frame",
tgt_fcid);
return;
}
oxid = FNIC_STD_GET_OX_ID(fchdr);
fdls_free_oxid(iport, oxid, &tport->active_oxid);
switch (plogi_rsp->els.fl_cmd) {
case ELS_LS_ACC:
atomic64_inc(&iport->iport_stats.tport_plogi_ls_accepts);
FNIC_FCS_DBG(KERN_INFO, fnic,
"PLOGI accepted by target: 0x%x", tgt_fcid);
break;
case ELS_LS_RJT:
atomic64_inc(&iport->iport_stats.tport_plogi_ls_rejects);
if (((els_rjt->rej.er_reason == ELS_RJT_BUSY)
|| (els_rjt->rej.er_reason == ELS_RJT_UNAB))
&& (tport->retry_counter < iport->max_plogi_retries)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"PLOGI ret ELS_LS_RJT BUSY. Retry from timer routine: 0x%x",
tgt_fcid);
/* Retry plogi again from the timer routine. */
tport->flags |= FNIC_FDLS_RETRY_FRAME;
return;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"PLOGI returned ELS_LS_RJT from target: 0x%x",
tgt_fcid);
fdls_delete_tport(iport, tport);
return;
default:
atomic64_inc(&iport->iport_stats.tport_plogi_misc_rejects);
FNIC_FCS_DBG(KERN_INFO, fnic,
"PLOGI not accepted from target fcid: 0x%x",
tgt_fcid);
return;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"Found the PLOGI target: 0x%x and state: %d",
(unsigned int) tgt_fcid, tport->state);
if (tport->timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport fcid 0x%x: Canceling disc timer\n",
tport->fcid);
fnic_del_tport_timer_sync(fnic, tport);
}
tport->timer_pending = 0;
tport->wwpn = get_unaligned_be64(&FNIC_LOGI_PORT_NAME(plogi_rsp->els));
tport->wwnn = get_unaligned_be64(&FNIC_LOGI_NODE_NAME(plogi_rsp->els));
/* Learn the Service Params */
/* Max frame size - choose the lowest */
max_payload_size = fnic_fc_plogi_rsp_rdf(iport, plogi_rsp);
tport->max_payload_size =
min(max_payload_size, iport->max_payload_size);
if (tport->max_payload_size < FNIC_MIN_DATA_FIELD_SIZE) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"MFS: tport max frame size below spec bounds: %d",
tport->max_payload_size);
tport->max_payload_size = FNIC_MIN_DATA_FIELD_SIZE;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"MAX frame size: %u iport max_payload_size: %d tport mfs: %d",
max_payload_size, iport->max_payload_size,
tport->max_payload_size);
tport->max_concur_seqs = FNIC_FC_PLOGI_RSP_CONCUR_SEQ(plogi_rsp);
tport->retry_counter = 0;
fdls_set_tport_state(tport, FDLS_TGT_STATE_PRLI);
fdls_send_tgt_prli(iport, tport);
}
static void
fdls_process_tgt_prli_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
uint32_t tgt_fcid;
struct fnic_tport_s *tport;
uint8_t *fcid;
uint16_t oxid;
struct fc_std_els_prli *prli_rsp = (struct fc_std_els_prli *)fchdr;
struct fc_std_els_rjt_rsp *els_rjt = (struct fc_std_els_rjt_rsp *)fchdr;
struct fnic_tport_event_s *tport_add_evt;
struct fnic *fnic = iport->fnic;
bool mismatched_tgt = false;
fcid = FNIC_STD_GET_S_ID(fchdr);
tgt_fcid = ntoh24(fcid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDLS process tgt PRLI response: 0x%x", tgt_fcid);
tport = fnic_find_tport_by_fcid(iport, tgt_fcid);
if (!tport) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport not found: 0x%x", tgt_fcid);
/* Handle or just drop? */
return;
}
if ((iport->state != FNIC_IPORT_STATE_READY)
|| (tport->flags & FNIC_FDLS_TGT_ABORT_ISSUED)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Dropping frame! iport st: %d tport st: %d tport fcid: 0x%x",
iport->state, tport->state, tport->fcid);
return;
}
if (tport->state != FDLS_TGT_STATE_PRLI) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"PRLI rsp recvd in wrong state. Drop frame. Restarting nexus");
fdls_target_restart_nexus(tport);
return;
}
if (FNIC_STD_GET_OX_ID(fchdr) != tport->active_oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Dropping PRLI response from target: 0x%x ",
tgt_fcid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Reason: Stale PRLI response/Aborted PDISC/OOO frame delivery");
return;
}
oxid = FNIC_STD_GET_OX_ID(fchdr);
fdls_free_oxid(iport, oxid, &tport->active_oxid);
switch (prli_rsp->els_prli.prli_cmd) {
case ELS_LS_ACC:
atomic64_inc(&iport->iport_stats.tport_prli_ls_accepts);
FNIC_FCS_DBG(KERN_INFO, fnic,
"PRLI accepted from target: 0x%x", tgt_fcid);
if (IS_FNIC_FCP_INITIATOR(fnic) &&
prli_rsp->sp.spp_type != FC_FC4_TYPE_SCSI) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"mismatched target zoned with FC SCSI initiator: 0x%x",
tgt_fcid);
mismatched_tgt = true;
} else if (IS_FNIC_NVME_INITIATOR(fnic) &&
prli_rsp->sp.spp_type != FC_TYPE_NVME) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"mismatched target zoned with NVME initiator: 0x%x",
tgt_fcid);
mismatched_tgt = true;
}
if (mismatched_tgt) {
fdls_tgt_logout(iport, tport);
fdls_delete_tport(iport, tport);
return;
}
break;
case ELS_LS_RJT:
atomic64_inc(&iport->iport_stats.tport_prli_ls_rejects);
if (((els_rjt->rej.er_reason == ELS_RJT_BUSY)
|| (els_rjt->rej.er_reason == ELS_RJT_UNAB))
&& (tport->retry_counter < FDLS_RETRY_COUNT)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"PRLI ret ELS_LS_RJT BUSY. Retry from timer routine: 0x%x",
tgt_fcid);
/*Retry Plogi again from the timer routine. */
tport->flags |= FNIC_FDLS_RETRY_FRAME;
return;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"PRLI returned ELS_LS_RJT from target: 0x%x",
tgt_fcid);
fdls_tgt_logout(iport, tport);
fdls_delete_tport(iport, tport);
return;
default:
atomic64_inc(&iport->iport_stats.tport_prli_misc_rejects);
FNIC_FCS_DBG(KERN_INFO, fnic,
"PRLI not accepted from target: 0x%x", tgt_fcid);
return;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"Found the PRLI target: 0x%x and state: %d",
(unsigned int) tgt_fcid, tport->state);
if (tport->timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport fcid 0x%x: Canceling disc timer\n",
tport->fcid);
fnic_del_tport_timer_sync(fnic, tport);
}
tport->timer_pending = 0;
/* Learn Service Params */
tport->fcp_csp = be32_to_cpu(prli_rsp->sp.spp_params);
tport->retry_counter = 0;
if (IS_FNIC_FCP_INITIATOR(fnic)) {
if (tport->fcp_csp & FCP_SPPF_RETRY)
tport->tgt_flags |= FNIC_FC_RP_FLAGS_RETRY;
} else if (IS_FNIC_NVME_INITIATOR(fnic)) {
if (tport->fcp_csp & FNIC_NVME_SP_SLER)
tport->tgt_flags |= FNIC_FC_RP_FLAGS_RETRY;
}
/* Check if the device plays Target Mode Function */
if ((IS_FNIC_FCP_INITIATOR(fnic) &&
!(tport->fcp_csp & FCP_PRLI_FUNC_TARGET)) ||
(IS_FNIC_NVME_INITIATOR(fnic) &&
!(tport->fcp_csp & FCP_PRLI_FUNC_TARGET))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Remote port(0x%x): no target support. Deleting it\n",
tgt_fcid);
fdls_tgt_logout(iport, tport);
fdls_delete_tport(iport, tport);
return;
}
fdls_set_tport_state(tport, FDLS_TGT_STATE_READY);
/* Inform the driver about new target added */
if (IS_FNIC_FCP_INITIATOR(fnic) ||
IS_FNIC_NVME_INITIATOR(fnic)) {
tport_add_evt = kzalloc_obj(struct fnic_tport_event_s, GFP_ATOMIC);
if (!tport_add_evt) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport fcid: 0x%x tport event memory allocation failure: 0x%0x\n",
iport->fcid, tport->fcid);
return;
}
tport_add_evt->event = TGT_EV_RPORT_ADD;
tport_add_evt->arg1 = (void *)tport;
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport fcid: 0x%x add tport event fcid: 0x%x\n",
tport->fcid, iport->fcid);
list_add_tail(&tport_add_evt->links, &fnic->tport_event_list);
queue_work(fnic_event_queue, &fnic->tport_work);
}
}
static void
fdls_process_rff_id_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
struct fnic *fnic = iport->fnic;
struct fnic_fdls_fabric_s *fdls = &iport->fabric;
struct fc_std_rff_id *rff_rsp = (struct fc_std_rff_id *) fchdr;
uint16_t rsp;
uint8_t reason_code;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
if (fdls_get_state(fdls) != FDLS_STATE_REGISTER_FC4_FEATURES) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RFF_ID resp recvd in state(%d). Dropping.",
fdls_get_state(fdls));
return;
}
if (iport->active_oxid_fabric_req != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. state: %d, oxid recvd: 0x%x, active oxid: 0x%x\n",
fdls_get_state(fdls), oxid, iport->active_oxid_fabric_req);
return;
}
rsp = FNIC_STD_GET_FC_CT_CMD((&rff_rsp->fc_std_ct_hdr));
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS process RFF ID response: 0x%04x", iport->fcid,
(uint32_t) rsp);
fdls_free_oxid(iport, oxid, &iport->active_oxid_fabric_req);
switch (rsp) {
case FC_FS_ACC:
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Canceling fabric disc timer %p\n", iport);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
fdls->retry_counter = 0;
fdls_set_state((&iport->fabric), FDLS_STATE_SCR);
fdls_send_scr(iport);
break;
case FC_FS_RJT:
reason_code = rff_rsp->fc_std_ct_hdr.ct_reason;
if (((reason_code == FC_FS_RJT_BSY)
|| (reason_code == FC_FS_RJT_UNABL))
&& (fdls->retry_counter < FDLS_RETRY_COUNT)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RFF_ID ret ELS_LS_RJT BUSY. Retry from timer routine %p",
iport);
/* Retry again from the timer routine */
fdls->flags |= FNIC_FDLS_RETRY_FRAME;
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RFF_ID returned ELS_LS_RJT. Halting discovery %p",
iport);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Canceling fabric disc timer %p\n", iport);
fnic_del_fabric_timer_sync(fnic);
}
fdls->timer_pending = 0;
fdls->retry_counter = 0;
}
break;
default:
break;
}
}
static void
fdls_process_rft_id_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
struct fnic_fdls_fabric_s *fdls = &iport->fabric;
struct fc_std_rft_id *rft_rsp = (struct fc_std_rft_id *) fchdr;
uint16_t rsp;
uint8_t reason_code;
struct fnic *fnic = iport->fnic;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
if (fdls_get_state(fdls) != FDLS_STATE_REGISTER_FC4_TYPES) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RFT_ID resp recvd in state(%d). Dropping.",
fdls_get_state(fdls));
return;
}
if (iport->active_oxid_fabric_req != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. state: %d, oxid recvd: 0x%x, active oxid: 0x%x\n",
fdls_get_state(fdls), oxid, iport->active_oxid_fabric_req);
return;
}
rsp = FNIC_STD_GET_FC_CT_CMD((&rft_rsp->fc_std_ct_hdr));
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS process RFT ID response: 0x%04x", iport->fcid,
(uint32_t) rsp);
fdls_free_oxid(iport, oxid, &iport->active_oxid_fabric_req);
switch (rsp) {
case FC_FS_ACC:
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Canceling fabric disc timer %p\n", iport);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
fdls->retry_counter = 0;
fdls_send_register_fc4_features(iport);
fdls_set_state((&iport->fabric), FDLS_STATE_REGISTER_FC4_FEATURES);
break;
case FC_FS_RJT:
reason_code = rft_rsp->fc_std_ct_hdr.ct_reason;
if (((reason_code == FC_FS_RJT_BSY)
|| (reason_code == FC_FS_RJT_UNABL))
&& (fdls->retry_counter < FDLS_RETRY_COUNT)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: RFT_ID ret ELS_LS_RJT BUSY. Retry from timer routine",
iport->fcid);
/* Retry again from the timer routine */
fdls->flags |= FNIC_FDLS_RETRY_FRAME;
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: RFT_ID REJ. Halting discovery reason %d expl %d",
iport->fcid, reason_code,
rft_rsp->fc_std_ct_hdr.ct_explan);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Canceling fabric disc timer %p\n", iport);
fnic_del_fabric_timer_sync(fnic);
}
fdls->timer_pending = 0;
fdls->retry_counter = 0;
}
break;
default:
break;
}
}
static void
fdls_process_rpn_id_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
struct fnic_fdls_fabric_s *fdls = &iport->fabric;
struct fc_std_rpn_id *rpn_rsp = (struct fc_std_rpn_id *) fchdr;
uint16_t rsp;
uint8_t reason_code;
struct fnic *fnic = iport->fnic;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
if (fdls_get_state(fdls) != FDLS_STATE_RPN_ID) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RPN_ID resp recvd in state(%d). Dropping.",
fdls_get_state(fdls));
return;
}
if (iport->active_oxid_fabric_req != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. state: %d, oxid recvd: 0x%x, active oxid: 0x%x\n",
fdls_get_state(fdls), oxid, iport->active_oxid_fabric_req);
return;
}
rsp = FNIC_STD_GET_FC_CT_CMD((&rpn_rsp->fc_std_ct_hdr));
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS process RPN ID response: 0x%04x", iport->fcid,
(uint32_t) rsp);
fdls_free_oxid(iport, oxid, &iport->active_oxid_fabric_req);
switch (rsp) {
case FC_FS_ACC:
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Canceling fabric disc timer %p\n", iport);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
fdls->retry_counter = 0;
fdls_send_register_fc4_types(iport);
fdls_set_state((&iport->fabric), FDLS_STATE_REGISTER_FC4_TYPES);
break;
case FC_FS_RJT:
reason_code = rpn_rsp->fc_std_ct_hdr.ct_reason;
if (((reason_code == FC_FS_RJT_BSY)
|| (reason_code == FC_FS_RJT_UNABL))
&& (fdls->retry_counter < FDLS_RETRY_COUNT)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RPN_ID returned REJ BUSY. Retry from timer routine %p",
iport);
/* Retry again from the timer routine */
fdls->flags |= FNIC_FDLS_RETRY_FRAME;
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RPN_ID ELS_LS_RJT. Halting discovery %p", iport);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Canceling fabric disc timer %p\n", iport);
fnic_del_fabric_timer_sync(fnic);
}
fdls->timer_pending = 0;
fdls->retry_counter = 0;
}
break;
default:
break;
}
}
static void
fdls_process_scr_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
struct fnic_fdls_fabric_s *fdls = &iport->fabric;
struct fc_std_scr *scr_rsp = (struct fc_std_scr *) fchdr;
struct fc_std_els_rjt_rsp *els_rjt = (struct fc_std_els_rjt_rsp *) fchdr;
struct fnic *fnic = iport->fnic;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDLS process SCR response: 0x%04x",
(uint32_t) scr_rsp->scr.scr_cmd);
if (fdls_get_state(fdls) != FDLS_STATE_SCR) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"SCR resp recvd in state(%d). Dropping.",
fdls_get_state(fdls));
return;
}
if (iport->active_oxid_fabric_req != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. state: %d, oxid recvd: 0x%x, active oxid: 0x%x\n",
fdls_get_state(fdls), oxid, iport->active_oxid_fabric_req);
}
fdls_free_oxid(iport, oxid, &iport->active_oxid_fabric_req);
switch (scr_rsp->scr.scr_cmd) {
case ELS_LS_ACC:
atomic64_inc(&iport->iport_stats.fabric_scr_ls_accepts);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Canceling fabric disc timer %p\n", iport);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
iport->fabric.retry_counter = 0;
fdls_send_gpn_ft(iport, FDLS_STATE_GPN_FT);
break;
case ELS_LS_RJT:
atomic64_inc(&iport->iport_stats.fabric_scr_ls_rejects);
if (((els_rjt->rej.er_reason == ELS_RJT_BUSY)
|| (els_rjt->rej.er_reason == ELS_RJT_UNAB))
&& (fdls->retry_counter < FDLS_RETRY_COUNT)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"SCR ELS_LS_RJT BUSY. Retry from timer routine %p",
iport);
/* Retry again from the timer routine */
fdls->flags |= FNIC_FDLS_RETRY_FRAME;
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"SCR returned ELS_LS_RJT. Halting discovery %p",
iport);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Canceling fabric disc timer %p\n",
iport);
fnic_del_fabric_timer_sync(fnic);
}
fdls->timer_pending = 0;
fdls->retry_counter = 0;
}
break;
default:
atomic64_inc(&iport->iport_stats.fabric_scr_misc_rejects);
break;
}
}
static void
fdls_process_gpn_ft_tgt_list(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr, int len)
{
struct fc_gpn_ft_rsp_iu *gpn_ft_tgt;
struct fnic_tport_s *tport, *next;
uint32_t fcid;
uint64_t wwpn;
int rem_len = len;
u32 old_link_down_cnt = iport->fnic->link_down_cnt;
struct fnic *fnic = iport->fnic;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS process GPN_FT tgt list", iport->fcid);
gpn_ft_tgt =
(struct fc_gpn_ft_rsp_iu *)((uint8_t *) fchdr +
sizeof(struct fc_frame_header)
+ sizeof(struct fc_ct_hdr));
len -= sizeof(struct fc_frame_header) + sizeof(struct fc_ct_hdr);
while (rem_len > 0) {
fcid = ntoh24(gpn_ft_tgt->fcid);
wwpn = be64_to_cpu(gpn_ft_tgt->wwpn);
FNIC_FCS_DBG(KERN_INFO, fnic,
"tport: 0x%x: ctrl:0x%x", fcid, gpn_ft_tgt->ctrl);
if (fcid == iport->fcid) {
if (gpn_ft_tgt->ctrl & FC_NS_FID_LAST)
break;
gpn_ft_tgt++;
rem_len -= sizeof(struct fc_gpn_ft_rsp_iu);
continue;
}
tport = fnic_find_tport_by_wwpn(iport, wwpn);
if (!tport) {
/*
* New port registered with the switch or first time query
*/
tport = fdls_create_tport(iport, fcid, wwpn);
if (!tport)
return;
}
/*
* check if this was an existing tport with same fcid
* but whose wwpn has changed now ,then remove it and
* create a new one
*/
if (tport->fcid != fcid) {
fdls_delete_tport(iport, tport);
tport = fdls_create_tport(iport, fcid, wwpn);
if (!tport)
return;
}
/*
* If this GPN_FT rsp is after RSCN then mark the tports which
* matches with the new GPN_FT list, if some tport is not
* found in GPN_FT we went to delete that tport later.
*/
if (fdls_get_state((&iport->fabric)) == FDLS_STATE_RSCN_GPN_FT)
tport->flags |= FNIC_FDLS_TPORT_IN_GPN_FT_LIST;
if (gpn_ft_tgt->ctrl & FC_NS_FID_LAST)
break;
gpn_ft_tgt++;
rem_len -= sizeof(struct fc_gpn_ft_rsp_iu);
}
if (rem_len <= 0) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"GPN_FT response: malformed/corrupt frame rxlen: %d remlen: %d",
len, rem_len);
}
/*remove those ports which was not listed in GPN_FT */
if (fdls_get_state((&iport->fabric)) == FDLS_STATE_RSCN_GPN_FT) {
list_for_each_entry_safe(tport, next, &iport->tport_list, links) {
if (!(tport->flags & FNIC_FDLS_TPORT_IN_GPN_FT_LIST)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Remove port: 0x%x not found in GPN_FT list",
tport->fcid);
fdls_delete_tport(iport, tport);
} else {
tport->flags &= ~FNIC_FDLS_TPORT_IN_GPN_FT_LIST;
}
if ((old_link_down_cnt != iport->fnic->link_down_cnt)
|| (iport->state != FNIC_IPORT_STATE_READY)) {
return;
}
}
}
}
static void
fdls_process_gpn_ft_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr, int len)
{
struct fnic_fdls_fabric_s *fdls = &iport->fabric;
struct fc_std_gpn_ft *gpn_ft_rsp = (struct fc_std_gpn_ft *) fchdr;
uint16_t rsp;
uint8_t reason_code;
int count = 0;
struct fnic_tport_s *tport, *next;
u32 old_link_down_cnt = iport->fnic->link_down_cnt;
struct fnic *fnic = iport->fnic;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDLS process GPN_FT response: iport state: %d len: %d",
iport->state, len);
/*
* GPNFT response :-
* FDLS_STATE_GPN_FT : GPNFT send after SCR state
* during fabric discovery(FNIC_IPORT_STATE_FABRIC_DISC)
* FDLS_STATE_RSCN_GPN_FT : GPNFT send in response to RSCN
* FDLS_STATE_SEND_GPNFT : GPNFT send after deleting a Target,
* e.g. after receiving Target LOGO
* FDLS_STATE_TGT_DISCOVERY :Target discovery is currently in progress
* from previous GPNFT response,a new GPNFT response has come.
*/
if (!(((iport->state == FNIC_IPORT_STATE_FABRIC_DISC)
&& (fdls_get_state(fdls) == FDLS_STATE_GPN_FT))
|| ((iport->state == FNIC_IPORT_STATE_READY)
&& ((fdls_get_state(fdls) == FDLS_STATE_RSCN_GPN_FT)
|| (fdls_get_state(fdls) == FDLS_STATE_SEND_GPNFT)
|| (fdls_get_state(fdls) == FDLS_STATE_TGT_DISCOVERY))))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"GPNFT resp recvd in fab state(%d) iport_state(%d). Dropping.",
fdls_get_state(fdls), iport->state);
return;
}
if (iport->active_oxid_fabric_req != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. state: %d, oxid recvd: 0x%x, active oxid: 0x%x\n",
fdls_get_state(fdls), oxid, iport->active_oxid_fabric_req);
}
fdls_free_oxid(iport, oxid, &iport->active_oxid_fabric_req);
iport->state = FNIC_IPORT_STATE_READY;
rsp = FNIC_STD_GET_FC_CT_CMD((&gpn_ft_rsp->fc_std_ct_hdr));
switch (rsp) {
case FC_FS_ACC:
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: GPNFT_RSP accept", iport->fcid);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Canceling fabric disc timer\n",
iport->fcid);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
iport->fabric.retry_counter = 0;
fdls_process_gpn_ft_tgt_list(iport, fchdr, len);
/*
* iport state can change only if link down event happened
* We don't need to undo fdls_process_gpn_ft_tgt_list,
* that will be taken care in next link up event
*/
if (iport->state != FNIC_IPORT_STATE_READY) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Halting target discovery: fab st: %d iport st: %d ",
fdls_get_state(fdls), iport->state);
break;
}
fdls_tgt_discovery_start(iport);
break;
case FC_FS_RJT:
reason_code = gpn_ft_rsp->fc_std_ct_hdr.ct_reason;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: GPNFT_RSP Reject reason: %d", iport->fcid, reason_code);
if (((reason_code == FC_FS_RJT_BSY)
|| (reason_code == FC_FS_RJT_UNABL))
&& (fdls->retry_counter < FDLS_RETRY_COUNT)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: GPNFT_RSP ret REJ/BSY. Retry from timer routine",
iport->fcid);
/* Retry again from the timer routine */
fdls->flags |= FNIC_FDLS_RETRY_FRAME;
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: GPNFT_RSP reject", iport->fcid);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Canceling fabric disc timer\n",
iport->fcid);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
iport->fabric.retry_counter = 0;
/*
* If GPN_FT ls_rjt then we should delete
* all existing tports
*/
count = 0;
list_for_each_entry_safe(tport, next, &iport->tport_list,
links) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"GPN_FT_REJECT: Remove port: 0x%x",
tport->fcid);
fdls_delete_tport(iport, tport);
if ((old_link_down_cnt != iport->fnic->link_down_cnt)
|| (iport->state != FNIC_IPORT_STATE_READY)) {
return;
}
count++;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"GPN_FT_REJECT: Removed (0x%x) ports", count);
}
break;
default:
break;
}
}
/**
* fdls_process_fabric_logo_rsp - Handle an flogo response from the fcf
* @iport: Handle to fnic iport
* @fchdr: Incoming frame
*/
static void
fdls_process_fabric_logo_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
struct fc_std_flogi *flogo_rsp = (struct fc_std_flogi *) fchdr;
struct fnic_fdls_fabric_s *fdls = &iport->fabric;
struct fnic *fnic = iport->fnic;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
if (iport->active_oxid_fabric_req != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. state: %d, oxid recvd: 0x%x, active oxid: 0x%x\n",
fdls_get_state(fdls), oxid, iport->active_oxid_fabric_req);
}
fdls_free_oxid(iport, oxid, &iport->active_oxid_fabric_req);
switch (flogo_rsp->els.fl_cmd) {
case ELS_LS_ACC:
if (iport->fabric.state != FDLS_STATE_FABRIC_LOGO) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Flogo response. Fabric not in LOGO state. Dropping! %p",
iport);
return;
}
iport->fabric.state = FDLS_STATE_FLOGO_DONE;
iport->state = FNIC_IPORT_STATE_LINK_WAIT;
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport 0x%p Canceling fabric disc timer\n",
iport);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
FNIC_FCS_DBG(KERN_INFO, fnic,
"Flogo response from Fabric for did: 0x%x",
ntoh24(fchdr->fh_d_id));
return;
case ELS_LS_RJT:
FNIC_FCS_DBG(KERN_INFO, fnic,
"Flogo response from Fabric for did: 0x%x returned ELS_LS_RJT",
ntoh24(fchdr->fh_d_id));
return;
default:
FNIC_FCS_DBG(KERN_INFO, fnic,
"FLOGO response not accepted or rejected: 0x%x",
flogo_rsp->els.fl_cmd);
}
}
static void
fdls_process_flogi_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr, void *rx_frame)
{
struct fnic_fdls_fabric_s *fabric = &iport->fabric;
struct fc_std_flogi *flogi_rsp = (struct fc_std_flogi *) fchdr;
uint8_t *fcid;
uint16_t rdf_size;
uint8_t fcmac[6] = { 0x0E, 0XFC, 0x00, 0x00, 0x00, 0x00 };
struct fnic *fnic = iport->fnic;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS processing FLOGI response", iport->fcid);
if (fdls_get_state(fabric) != FDLS_STATE_FABRIC_FLOGI) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"FLOGI response received in state (%d). Dropping frame",
fdls_get_state(fabric));
return;
}
if (iport->active_oxid_fabric_req != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. state: %d, oxid recvd: 0x%x, active oxid: 0x%x\n",
fdls_get_state(fabric), oxid, iport->active_oxid_fabric_req);
return;
}
fdls_free_oxid(iport, oxid, &iport->active_oxid_fabric_req);
switch (flogi_rsp->els.fl_cmd) {
case ELS_LS_ACC:
atomic64_inc(&iport->iport_stats.fabric_flogi_ls_accepts);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport fcid: 0x%x Canceling fabric disc timer\n",
iport->fcid);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
iport->fabric.retry_counter = 0;
fcid = FNIC_STD_GET_D_ID(fchdr);
iport->fcid = ntoh24(fcid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FLOGI response accepted", iport->fcid);
/* Learn the Service Params */
rdf_size = be16_to_cpu(FNIC_LOGI_RDF_SIZE(flogi_rsp->els));
if ((rdf_size >= FNIC_MIN_DATA_FIELD_SIZE)
&& (rdf_size < FNIC_FC_MAX_PAYLOAD_LEN))
iport->max_payload_size = min(rdf_size,
iport->max_payload_size);
FNIC_FCS_DBG(KERN_INFO, fnic,
"max_payload_size from fabric: %u set: %d", rdf_size,
iport->max_payload_size);
iport->r_a_tov = be32_to_cpu(FNIC_LOGI_R_A_TOV(flogi_rsp->els));
iport->e_d_tov = be32_to_cpu(FNIC_LOGI_E_D_TOV(flogi_rsp->els));
if (FNIC_LOGI_FEATURES(flogi_rsp->els) & FNIC_FC_EDTOV_NSEC)
iport->e_d_tov = iport->e_d_tov / FNIC_NSEC_TO_MSEC;
FNIC_FCS_DBG(KERN_INFO, fnic,
"From fabric: R_A_TOV: %d E_D_TOV: %d",
iport->r_a_tov, iport->e_d_tov);
if (IS_FNIC_FCP_INITIATOR(fnic)) {
fc_host_fabric_name(iport->fnic->host) =
get_unaligned_be64(&FNIC_LOGI_NODE_NAME(flogi_rsp->els));
fc_host_port_id(iport->fnic->host) = iport->fcid;
}
fnic_fdls_learn_fcoe_macs(iport, rx_frame, fcid);
if (fnic_fdls_register_portid(iport, iport->fcid, rx_frame) != 0) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FLOGI registration failed", iport->fcid);
break;
}
memcpy(&fcmac[3], fcid, 3);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Adding vNIC device MAC addr: %02x:%02x:%02x:%02x:%02x:%02x",
fcmac[0], fcmac[1], fcmac[2], fcmac[3], fcmac[4],
fcmac[5]);
vnic_dev_add_addr(iport->fnic->vdev, fcmac);
if (fdls_get_state(fabric) == FDLS_STATE_FABRIC_FLOGI) {
fnic_fdls_start_plogi(iport);
FNIC_FCS_DBG(KERN_INFO, fnic,
"FLOGI response received. Starting PLOGI");
} else {
/* From FDLS_STATE_FABRIC_FLOGI state fabric can only go to
* FDLS_STATE_LINKDOWN
* state, hence we don't have to worry about undoing:
* the fnic_fdls_register_portid and vnic_dev_add_addr
*/
FNIC_FCS_DBG(KERN_INFO, fnic,
"FLOGI response received in state (%d). Dropping frame",
fdls_get_state(fabric));
}
break;
case ELS_LS_RJT:
atomic64_inc(&iport->iport_stats.fabric_flogi_ls_rejects);
if (fabric->retry_counter < iport->max_flogi_retries) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"FLOGI returned ELS_LS_RJT BUSY. Retry from timer routine %p",
iport);
/* Retry Flogi again from the timer routine. */
fabric->flags |= FNIC_FDLS_RETRY_FRAME;
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"FLOGI returned ELS_LS_RJT. Halting discovery %p",
iport);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport 0x%p Canceling fabric disc timer\n",
iport);
fnic_del_fabric_timer_sync(fnic);
}
fabric->timer_pending = 0;
fabric->retry_counter = 0;
}
break;
default:
FNIC_FCS_DBG(KERN_INFO, fnic,
"FLOGI response not accepted: 0x%x",
flogi_rsp->els.fl_cmd);
atomic64_inc(&iport->iport_stats.fabric_flogi_misc_rejects);
break;
}
}
static void
fdls_process_fabric_plogi_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
struct fc_std_flogi *plogi_rsp = (struct fc_std_flogi *) fchdr;
struct fc_std_els_rjt_rsp *els_rjt = (struct fc_std_els_rjt_rsp *) fchdr;
struct fnic_fdls_fabric_s *fdls = &iport->fabric;
struct fnic *fnic = iport->fnic;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
if (fdls_get_state((&iport->fabric)) != FDLS_STATE_FABRIC_PLOGI) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Fabric PLOGI response received in state (%d). Dropping frame",
fdls_get_state(&iport->fabric));
return;
}
if (iport->active_oxid_fabric_req != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. state: %d, oxid recvd: 0x%x, active oxid: 0x%x\n",
fdls_get_state(fdls), oxid, iport->active_oxid_fabric_req);
return;
}
fdls_free_oxid(iport, oxid, &iport->active_oxid_fabric_req);
switch (plogi_rsp->els.fl_cmd) {
case ELS_LS_ACC:
atomic64_inc(&iport->iport_stats.fabric_plogi_ls_accepts);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport fcid: 0x%x fabric PLOGI response: Accepted\n",
iport->fcid);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
iport->fabric.retry_counter = 0;
fdls_set_state(&iport->fabric, FDLS_STATE_RPN_ID);
fdls_send_rpn_id(iport);
break;
case ELS_LS_RJT:
atomic64_inc(&iport->iport_stats.fabric_plogi_ls_rejects);
if (((els_rjt->rej.er_reason == ELS_RJT_BUSY)
|| (els_rjt->rej.er_reason == ELS_RJT_UNAB))
&& (iport->fabric.retry_counter < iport->max_plogi_retries)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Fabric PLOGI ELS_LS_RJT BUSY. Retry from timer routine",
iport->fcid);
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Fabric PLOGI ELS_LS_RJT. Halting discovery",
iport->fcid);
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport fcid: 0x%x Canceling fabric disc timer\n",
iport->fcid);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
iport->fabric.retry_counter = 0;
return;
}
break;
default:
FNIC_FCS_DBG(KERN_INFO, fnic,
"PLOGI response not accepted: 0x%x",
plogi_rsp->els.fl_cmd);
atomic64_inc(&iport->iport_stats.fabric_plogi_misc_rejects);
break;
}
}
static void fdls_process_fdmi_plogi_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
struct fc_std_flogi *plogi_rsp = (struct fc_std_flogi *)fchdr;
struct fc_std_els_rjt_rsp *els_rjt = (struct fc_std_els_rjt_rsp *)fchdr;
struct fnic_fdls_fabric_s *fdls = &iport->fabric;
struct fnic *fnic = iport->fnic;
u64 fdmi_tov;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
if (iport->active_oxid_fdmi_plogi != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. state: %d, oxid recvd: 0x%x, active oxid: 0x%x\n",
fdls_get_state(fdls), oxid, iport->active_oxid_fdmi_plogi);
return;
}
iport->fabric.fdmi_pending &= ~FDLS_FDMI_PLOGI_PENDING;
fdls_free_oxid(iport, oxid, &iport->active_oxid_fdmi_plogi);
if (ntoh24(fchdr->fh_s_id) == FC_FID_MGMT_SERV) {
timer_delete_sync(&iport->fabric.fdmi_timer);
iport->fabric.fdmi_pending = 0;
switch (plogi_rsp->els.fl_cmd) {
case ELS_LS_ACC:
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDLS process fdmi PLOGI response status: ELS_LS_ACC\n");
FNIC_FCS_DBG(KERN_INFO, fnic,
"Sending fdmi registration for port 0x%x\n",
iport->fcid);
fdls_fdmi_register_hba(iport);
fdls_fdmi_register_pa(iport);
fdmi_tov = jiffies + msecs_to_jiffies(5000);
mod_timer(&iport->fabric.fdmi_timer,
round_jiffies(fdmi_tov));
break;
case ELS_LS_RJT:
FNIC_FCS_DBG(KERN_INFO, fnic,
"Fabric FDMI PLOGI returned ELS_LS_RJT reason: 0x%x",
els_rjt->rej.er_reason);
if (((els_rjt->rej.er_reason == ELS_RJT_BUSY)
|| (els_rjt->rej.er_reason == ELS_RJT_UNAB))
&& (iport->fabric.fdmi_retry < 7)) {
iport->fabric.fdmi_retry++;
fdls_send_fdmi_plogi(iport);
}
break;
default:
break;
}
}
}
static void fdls_process_fdmi_reg_ack(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr,
int rsp_type)
{
struct fnic *fnic = iport->fnic;
uint16_t oxid;
if (!iport->fabric.fdmi_pending) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Received FDMI ack while not waiting: 0x%x\n",
FNIC_STD_GET_OX_ID(fchdr));
return;
}
oxid = FNIC_STD_GET_OX_ID(fchdr);
if ((iport->active_oxid_fdmi_rhba != oxid) &&
(iport->active_oxid_fdmi_rpa != oxid)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Incorrect OXID in response. oxid recvd: 0x%x, active oxids(rhba,rpa): 0x%x, 0x%x\n",
oxid, iport->active_oxid_fdmi_rhba, iport->active_oxid_fdmi_rpa);
return;
}
if (FNIC_FRAME_TYPE(oxid) == FNIC_FRAME_TYPE_FDMI_RHBA) {
iport->fabric.fdmi_pending &= ~FDLS_FDMI_REG_HBA_PENDING;
fdls_free_oxid(iport, oxid, &iport->active_oxid_fdmi_rhba);
} else {
iport->fabric.fdmi_pending &= ~FDLS_FDMI_RPA_PENDING;
fdls_free_oxid(iport, oxid, &iport->active_oxid_fdmi_rpa);
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport fcid: 0x%x: Received FDMI registration ack\n",
iport->fcid);
if (!iport->fabric.fdmi_pending) {
timer_delete_sync(&iport->fabric.fdmi_timer);
FNIC_FCS_DBG(KERN_INFO, fnic,
"iport fcid: 0x%x: Canceling FDMI timer\n",
iport->fcid);
}
}
static void fdls_process_fdmi_abts_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
uint32_t s_id;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
s_id = ntoh24(FNIC_STD_GET_S_ID(fchdr));
if (!(s_id != FC_FID_MGMT_SERV)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received abts rsp with invalid SID: 0x%x. Dropping frame",
s_id);
return;
}
oxid = FNIC_STD_GET_OX_ID(fchdr);
switch (FNIC_FRAME_TYPE(oxid)) {
case FNIC_FRAME_TYPE_FDMI_PLOGI:
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received FDMI PLOGI ABTS rsp with oxid: 0x%x", oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: iport->fabric.fdmi_pending: 0x%x",
iport->fcid, iport->fabric.fdmi_pending);
fdls_free_oxid(iport, oxid, &iport->active_oxid_fdmi_plogi);
iport->fabric.fdmi_pending &= ~FDLS_FDMI_PLOGI_PENDING;
iport->fabric.fdmi_pending &= ~FDLS_FDMI_ABORT_PENDING;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: iport->fabric.fdmi_pending: 0x%x",
iport->fcid, iport->fabric.fdmi_pending);
break;
case FNIC_FRAME_TYPE_FDMI_RHBA:
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received FDMI RHBA ABTS rsp with oxid: 0x%x", oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: iport->fabric.fdmi_pending: 0x%x",
iport->fcid, iport->fabric.fdmi_pending);
iport->fabric.fdmi_pending &= ~FDLS_FDMI_REG_HBA_PENDING;
/* If RPA is still pending, don't turn off ABORT PENDING.
* We count on the timer to detect the ABTS timeout and take
* corrective action.
*/
if (!(iport->fabric.fdmi_pending & FDLS_FDMI_RPA_PENDING))
iport->fabric.fdmi_pending &= ~FDLS_FDMI_ABORT_PENDING;
fdls_free_oxid(iport, oxid, &iport->active_oxid_fdmi_rhba);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: iport->fabric.fdmi_pending: 0x%x",
iport->fcid, iport->fabric.fdmi_pending);
break;
case FNIC_FRAME_TYPE_FDMI_RPA:
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received FDMI RPA ABTS rsp with oxid: 0x%x", oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: iport->fabric.fdmi_pending: 0x%x",
iport->fcid, iport->fabric.fdmi_pending);
iport->fabric.fdmi_pending &= ~FDLS_FDMI_RPA_PENDING;
/* If RHBA is still pending, don't turn off ABORT PENDING.
* We count on the timer to detect the ABTS timeout and take
* corrective action.
*/
if (!(iport->fabric.fdmi_pending & FDLS_FDMI_REG_HBA_PENDING))
iport->fabric.fdmi_pending &= ~FDLS_FDMI_ABORT_PENDING;
fdls_free_oxid(iport, oxid, &iport->active_oxid_fdmi_rpa);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: iport->fabric.fdmi_pending: 0x%x",
iport->fcid, iport->fabric.fdmi_pending);
break;
default:
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received abts rsp with invalid oxid: 0x%x. Dropping frame",
oxid);
break;
}
/*
* Only if ABORT PENDING is off, delete the timer, and if no other
* operations are pending, retry FDMI.
* Otherwise, let the timer pop and take the appropriate action.
*/
if (!(iport->fabric.fdmi_pending & FDLS_FDMI_ABORT_PENDING)) {
timer_delete_sync(&iport->fabric.fdmi_timer);
if (!iport->fabric.fdmi_pending)
fdls_fdmi_retry_plogi(iport);
}
}
static void
fdls_process_fabric_abts_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
uint32_t s_id;
struct fc_std_abts_ba_acc *ba_acc = (struct fc_std_abts_ba_acc *)fchdr;
struct fc_std_abts_ba_rjt *ba_rjt;
uint32_t fabric_state = iport->fabric.state;
struct fnic *fnic = iport->fnic;
int frame_type;
uint16_t oxid;
s_id = ntoh24(fchdr->fh_s_id);
ba_rjt = (struct fc_std_abts_ba_rjt *) fchdr;
if (!((s_id == FC_FID_DIR_SERV) || (s_id == FC_FID_FLOGI)
|| (s_id == FC_FID_FCTRL))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received abts rsp with invalid SID: 0x%x. Dropping frame",
s_id);
return;
}
oxid = FNIC_STD_GET_OX_ID(fchdr);
if (iport->active_oxid_fabric_req != oxid) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received abts rsp with invalid oxid: 0x%x. Dropping frame",
oxid);
return;
}
if (iport->fabric.timer_pending) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Canceling fabric disc timer %p\n", iport);
fnic_del_fabric_timer_sync(fnic);
}
iport->fabric.timer_pending = 0;
iport->fabric.flags &= ~FNIC_FDLS_FABRIC_ABORT_ISSUED;
if (fchdr->fh_r_ctl == FC_RCTL_BA_ACC) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received abts rsp BA_ACC for fabric_state: %d OX_ID: 0x%x",
fabric_state, be16_to_cpu(ba_acc->acc.ba_ox_id));
} else if (fchdr->fh_r_ctl == FC_RCTL_BA_RJT) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"BA_RJT fs: %d OX_ID: 0x%x rc: 0x%x rce: 0x%x",
fabric_state, FNIC_STD_GET_OX_ID(&ba_rjt->fchdr),
ba_rjt->rjt.br_reason, ba_rjt->rjt.br_explan);
}
frame_type = FNIC_FRAME_TYPE(oxid);
fdls_free_oxid(iport, oxid, &iport->active_oxid_fabric_req);
/* currently error handling/retry logic is same for ABTS BA_ACC & BA_RJT */
switch (frame_type) {
case FNIC_FRAME_TYPE_FABRIC_FLOGI:
if (iport->fabric.retry_counter < iport->max_flogi_retries)
fdls_send_fabric_flogi(iport);
else
FNIC_FCS_DBG(KERN_INFO, fnic,
"Exceeded max FLOGI retries");
break;
case FNIC_FRAME_TYPE_FABRIC_LOGO:
if (iport->fabric.retry_counter < FABRIC_LOGO_MAX_RETRY)
fdls_send_fabric_logo(iport);
break;
case FNIC_FRAME_TYPE_FABRIC_PLOGI:
if (iport->fabric.retry_counter < iport->max_plogi_retries)
fdls_send_fabric_plogi(iport);
else
FNIC_FCS_DBG(KERN_INFO, fnic,
"Exceeded max PLOGI retries");
break;
case FNIC_FRAME_TYPE_FABRIC_RPN:
if (iport->fabric.retry_counter < FDLS_RETRY_COUNT)
fdls_send_rpn_id(iport);
else
/* go back to fabric Plogi */
fnic_fdls_start_plogi(iport);
break;
case FNIC_FRAME_TYPE_FABRIC_SCR:
if (iport->fabric.retry_counter < FDLS_RETRY_COUNT)
fdls_send_scr(iport);
else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"SCR exhausted retries. Start fabric PLOGI %p",
iport);
fnic_fdls_start_plogi(iport); /* go back to fabric Plogi */
}
break;
case FNIC_FRAME_TYPE_FABRIC_RFT:
if (iport->fabric.retry_counter < FDLS_RETRY_COUNT)
fdls_send_register_fc4_types(iport);
else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RFT exhausted retries. Start fabric PLOGI %p",
iport);
fnic_fdls_start_plogi(iport); /* go back to fabric Plogi */
}
break;
case FNIC_FRAME_TYPE_FABRIC_RFF:
if (iport->fabric.retry_counter < FDLS_RETRY_COUNT)
fdls_send_register_fc4_features(iport);
else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RFF exhausted retries. Start fabric PLOGI %p",
iport);
fnic_fdls_start_plogi(iport); /* go back to fabric Plogi */
}
break;
case FNIC_FRAME_TYPE_FABRIC_GPN_FT:
if (iport->fabric.retry_counter <= FDLS_RETRY_COUNT)
fdls_send_gpn_ft(iport, fabric_state);
else
FNIC_FCS_DBG(KERN_INFO, fnic,
"GPN FT exhausted retries. Start fabric PLOGI %p",
iport);
break;
default:
/*
* We should not be here since we already validated rx oxid with
* our active_oxid_fabric_req
*/
FNIC_FCS_DBG(KERN_INFO, fnic,
"Invalid OXID/active oxid 0x%x\n", oxid);
WARN_ON(true);
return;
}
}
static void
fdls_process_abts_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
{
uint8_t *frame;
struct fc_std_abts_ba_acc *pba_acc;
uint32_t nport_id;
uint16_t oxid = FNIC_STD_GET_OX_ID(fchdr);
struct fnic_tport_s *tport;
struct fnic *fnic = iport->fnic;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_abts_ba_acc);
nport_id = ntoh24(fchdr->fh_s_id);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received abort from SID 0x%8x", nport_id);
tport = fnic_find_tport_by_fcid(iport, nport_id);
if (tport) {
if (tport->active_oxid == oxid) {
tport->flags |= FNIC_FDLS_TGT_ABORT_ISSUED;
fdls_free_oxid(iport, oxid, &tport->active_oxid);
}
}
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"0x%x: Failed to allocate frame to send response for ABTS req",
iport->fcid);
return;
}
pba_acc = (struct fc_std_abts_ba_acc *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
*pba_acc = (struct fc_std_abts_ba_acc) {
.fchdr = {.fh_r_ctl = FC_RCTL_BA_ACC,
.fh_f_ctl = {FNIC_FCP_RSP_FCTL, 0, 0}},
.acc = {.ba_low_seq_cnt = 0, .ba_high_seq_cnt = cpu_to_be16(0xFFFF)}
};
FNIC_STD_SET_S_ID(pba_acc->fchdr, fchdr->fh_d_id);
FNIC_STD_SET_D_ID(pba_acc->fchdr, fchdr->fh_s_id);
FNIC_STD_SET_OX_ID(pba_acc->fchdr, FNIC_STD_GET_OX_ID(fchdr));
FNIC_STD_SET_RX_ID(pba_acc->fchdr, FNIC_STD_GET_RX_ID(fchdr));
pba_acc->acc.ba_rx_id = cpu_to_be16(FNIC_STD_GET_RX_ID(fchdr));
pba_acc->acc.ba_ox_id = cpu_to_be16(FNIC_STD_GET_OX_ID(fchdr));
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS send BA ACC with oxid: 0x%x",
iport->fcid, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
}
static void
fdls_process_unsupported_els_req(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
uint8_t *frame;
struct fc_std_els_rjt_rsp *pls_rsp;
uint16_t oxid;
uint32_t d_id = ntoh24(fchdr->fh_d_id);
struct fnic *fnic = iport->fnic;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_els_rjt_rsp);
if (iport->fcid != d_id) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Dropping unsupported ELS with illegal frame bits 0x%x\n",
d_id);
atomic64_inc(&iport->iport_stats.unsupported_frames_dropped);
return;
}
if ((iport->state != FNIC_IPORT_STATE_READY)
&& (iport->state != FNIC_IPORT_STATE_FABRIC_DISC)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Dropping unsupported ELS request in iport state: %d",
iport->state);
atomic64_inc(&iport->iport_stats.unsupported_frames_dropped);
return;
}
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send response to unsupported ELS request");
return;
}
pls_rsp = (struct fc_std_els_rjt_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_els_rjt_frame(frame, iport);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Process unsupported ELS request from SID: 0x%x",
iport->fcid, ntoh24(fchdr->fh_s_id));
/* We don't support this ELS request, send a reject */
pls_rsp->rej.er_reason = 0x0B;
pls_rsp->rej.er_explan = 0x0;
pls_rsp->rej.er_vendor = 0x0;
FNIC_STD_SET_S_ID(pls_rsp->fchdr, fchdr->fh_d_id);
FNIC_STD_SET_D_ID(pls_rsp->fchdr, fchdr->fh_s_id);
oxid = FNIC_STD_GET_OX_ID(fchdr);
FNIC_STD_SET_OX_ID(pls_rsp->fchdr, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
}
static void
fdls_process_rls_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
{
uint8_t *frame;
struct fc_std_rls_acc *prls_acc_rsp;
uint16_t oxid;
struct fnic *fnic = iport->fnic;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_rls_acc);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Process RLS request %d", iport->fnic->fnic_num);
if ((iport->state != FNIC_IPORT_STATE_READY)
&& (iport->state != FNIC_IPORT_STATE_FABRIC_DISC)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received RLS req in iport state: %d. Dropping the frame.",
iport->state);
return;
}
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send RLS accept");
return;
}
prls_acc_rsp = (struct fc_std_rls_acc *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
FNIC_STD_SET_S_ID(prls_acc_rsp->fchdr, fchdr->fh_d_id);
FNIC_STD_SET_D_ID(prls_acc_rsp->fchdr, fchdr->fh_s_id);
oxid = FNIC_STD_GET_OX_ID(fchdr);
FNIC_STD_SET_OX_ID(prls_acc_rsp->fchdr, oxid);
FNIC_STD_SET_RX_ID(prls_acc_rsp->fchdr, FNIC_UNASSIGNED_RXID);
FNIC_STD_SET_F_CTL(prls_acc_rsp->fchdr, FNIC_ELS_REP_FCTL << 16);
FNIC_STD_SET_R_CTL(prls_acc_rsp->fchdr, FC_RCTL_ELS_REP);
FNIC_STD_SET_TYPE(prls_acc_rsp->fchdr, FC_TYPE_ELS);
prls_acc_rsp->els.rls_cmd = ELS_LS_ACC;
prls_acc_rsp->els.rls_lesb.lesb_link_fail =
cpu_to_be32(iport->fnic->link_down_cnt);
fnic_send_fcoe_frame(iport, frame, frame_size);
}
static void
fdls_process_els_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr,
uint32_t len)
{
uint8_t *frame;
struct fc_std_els_acc_rsp *pels_acc;
uint16_t oxid;
uint8_t *fc_payload;
uint8_t type;
struct fnic *fnic = iport->fnic;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET;
fc_payload = (uint8_t *) fchdr + sizeof(struct fc_frame_header);
type = *fc_payload;
if ((iport->state != FNIC_IPORT_STATE_READY)
&& (iport->state != FNIC_IPORT_STATE_FABRIC_DISC)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Dropping ELS frame type: 0x%x in iport state: %d",
type, iport->state);
return;
}
switch (type) {
case ELS_ECHO:
FNIC_FCS_DBG(KERN_INFO, fnic,
"sending LS_ACC for ECHO request %d\n",
iport->fnic->fnic_num);
break;
case ELS_RRQ:
FNIC_FCS_DBG(KERN_INFO, fnic,
"sending LS_ACC for RRQ request %d\n",
iport->fnic->fnic_num);
break;
default:
FNIC_FCS_DBG(KERN_INFO, fnic,
"sending LS_ACC for 0x%x ELS frame\n", type);
break;
}
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send ELS response for 0x%x",
type);
return;
}
if (type == ELS_ECHO) {
/* Brocade sends a longer payload, copy all frame back */
memcpy(frame, fchdr, len);
}
pels_acc = (struct fc_std_els_acc_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_els_acc_frame(frame, iport);
FNIC_STD_SET_D_ID(pels_acc->fchdr, fchdr->fh_s_id);
oxid = FNIC_STD_GET_OX_ID(fchdr);
FNIC_STD_SET_OX_ID(pels_acc->fchdr, oxid);
if (type == ELS_ECHO)
frame_size += len;
else
frame_size += sizeof(struct fc_std_els_acc_rsp);
fnic_send_fcoe_frame(iport, frame, frame_size);
}
static void
fdls_process_tgt_abts_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
uint32_t s_id;
struct fnic_tport_s *tport;
uint32_t tport_state;
struct fc_std_abts_ba_acc *ba_acc;
struct fc_std_abts_ba_rjt *ba_rjt;
uint16_t oxid;
struct fnic *fnic = iport->fnic;
int frame_type;
s_id = ntoh24(fchdr->fh_s_id);
ba_acc = (struct fc_std_abts_ba_acc *)fchdr;
ba_rjt = (struct fc_std_abts_ba_rjt *)fchdr;
tport = fnic_find_tport_by_fcid(iport, s_id);
if (!tport) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Received tgt abts rsp with invalid SID: 0x%x", s_id);
return;
}
if (tport->timer_pending) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"tport 0x%p Canceling fabric disc timer\n", tport);
fnic_del_tport_timer_sync(fnic, tport);
}
if (iport->state != FNIC_IPORT_STATE_READY) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Received tgt abts rsp in iport state(%d). Dropping.",
iport->state);
return;
}
tport->timer_pending = 0;
tport->flags &= ~FNIC_FDLS_TGT_ABORT_ISSUED;
tport_state = tport->state;
oxid = FNIC_STD_GET_OX_ID(fchdr);
/*This abort rsp is for ADISC */
frame_type = FNIC_FRAME_TYPE(oxid);
switch (frame_type) {
case FNIC_FRAME_TYPE_TGT_ADISC:
if (fchdr->fh_r_ctl == FC_RCTL_BA_ACC) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"OX_ID: 0x%x tgt_fcid: 0x%x rcvd tgt adisc abts resp BA_ACC",
be16_to_cpu(ba_acc->acc.ba_ox_id),
tport->fcid);
} else if (fchdr->fh_r_ctl == FC_RCTL_BA_RJT) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"ADISC BA_RJT rcvd tport_fcid: 0x%x tport_state: %d ",
tport->fcid, tport_state);
FNIC_FCS_DBG(KERN_ERR, fnic,
"reason code: 0x%x reason code explanation:0x%x ",
ba_rjt->rjt.br_reason,
ba_rjt->rjt.br_explan);
}
if ((tport->retry_counter < FDLS_RETRY_COUNT)
&& (fchdr->fh_r_ctl == FC_RCTL_BA_ACC)) {
fdls_free_oxid(iport, oxid, &tport->active_oxid);
fdls_send_tgt_adisc(iport, tport);
return;
}
fdls_free_oxid(iport, oxid, &tport->active_oxid);
FNIC_FCS_DBG(KERN_ERR, fnic,
"ADISC not responding. Deleting target port: 0x%x",
tport->fcid);
fdls_delete_tport(iport, tport);
/* Restart discovery of targets */
if ((iport->state == FNIC_IPORT_STATE_READY)
&& (iport->fabric.state != FDLS_STATE_SEND_GPNFT)
&& (iport->fabric.state != FDLS_STATE_RSCN_GPN_FT)) {
fdls_send_gpn_ft(iport, FDLS_STATE_SEND_GPNFT);
}
break;
case FNIC_FRAME_TYPE_TGT_PLOGI:
if (fchdr->fh_r_ctl == FC_RCTL_BA_ACC) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Received tgt PLOGI abts response BA_ACC tgt_fcid: 0x%x",
tport->fcid);
} else if (fchdr->fh_r_ctl == FC_RCTL_BA_RJT) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"PLOGI BA_RJT received for tport_fcid: 0x%x OX_ID: 0x%x",
tport->fcid, FNIC_STD_GET_OX_ID(fchdr));
FNIC_FCS_DBG(KERN_INFO, fnic,
"reason code: 0x%x reason code explanation: 0x%x",
ba_rjt->rjt.br_reason,
ba_rjt->rjt.br_explan);
}
if ((tport->retry_counter < iport->max_plogi_retries)
&& (fchdr->fh_r_ctl == FC_RCTL_BA_ACC)) {
fdls_free_oxid(iport, oxid, &tport->active_oxid);
fdls_send_tgt_plogi(iport, tport);
return;
}
fdls_free_oxid(iport, oxid, &tport->active_oxid);
fdls_delete_tport(iport, tport);
/* Restart discovery of targets */
if ((iport->state == FNIC_IPORT_STATE_READY)
&& (iport->fabric.state != FDLS_STATE_SEND_GPNFT)
&& (iport->fabric.state != FDLS_STATE_RSCN_GPN_FT)) {
fdls_send_gpn_ft(iport, FDLS_STATE_SEND_GPNFT);
}
break;
case FNIC_FRAME_TYPE_TGT_PRLI:
if (fchdr->fh_r_ctl == FC_RCTL_BA_ACC) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Received tgt PRLI abts response BA_ACC",
tport->fcid);
} else if (fchdr->fh_r_ctl == FC_RCTL_BA_RJT) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"PRLI BA_RJT received for tport_fcid: 0x%x OX_ID: 0x%x ",
tport->fcid, FNIC_STD_GET_OX_ID(fchdr));
FNIC_FCS_DBG(KERN_INFO, fnic,
"reason code: 0x%x reason code explanation: 0x%x",
ba_rjt->rjt.br_reason,
ba_rjt->rjt.br_explan);
}
if ((tport->retry_counter < FDLS_RETRY_COUNT)
&& (fchdr->fh_r_ctl == FC_RCTL_BA_ACC)) {
fdls_free_oxid(iport, oxid, &tport->active_oxid);
fdls_send_tgt_prli(iport, tport);
return;
}
fdls_free_oxid(iport, oxid, &tport->active_oxid);
fdls_send_tgt_plogi(iport, tport); /* go back to plogi */
fdls_set_tport_state(tport, FDLS_TGT_STATE_PLOGI);
break;
default:
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received ABTS response for unknown frame %p", iport);
break;
}
}
static void
fdls_process_plogi_req(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
uint8_t *frame;
struct fc_std_els_rjt_rsp *pplogi_rsp;
uint16_t oxid;
uint32_t d_id = ntoh24(fchdr->fh_d_id);
struct fnic *fnic = iport->fnic;
uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_els_rjt_rsp);
if (iport->fcid != d_id) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received PLOGI with illegal frame bits. Dropping frame from 0x%x",
d_id);
return;
}
if (iport->state != FNIC_IPORT_STATE_READY) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received PLOGI request in iport state: %d Dropping frame",
iport->state);
return;
}
frame = fdls_alloc_frame(iport);
if (frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send response to PLOGI request");
return;
}
pplogi_rsp = (struct fc_std_els_rjt_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_els_rjt_frame(frame, iport);
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: Process PLOGI request from SID: 0x%x",
iport->fcid, ntoh24(fchdr->fh_s_id));
/* We don't support PLOGI request, send a reject */
pplogi_rsp->rej.er_reason = 0x0B;
pplogi_rsp->rej.er_explan = 0x0;
pplogi_rsp->rej.er_vendor = 0x0;
FNIC_STD_SET_S_ID(pplogi_rsp->fchdr, fchdr->fh_d_id);
FNIC_STD_SET_D_ID(pplogi_rsp->fchdr, fchdr->fh_s_id);
oxid = FNIC_STD_GET_OX_ID(fchdr);
FNIC_STD_SET_OX_ID(pplogi_rsp->fchdr, oxid);
fnic_send_fcoe_frame(iport, frame, frame_size);
}
static void
fdls_process_logo_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
{
struct fc_std_logo *logo = (struct fc_std_logo *)fchdr;
uint32_t nport_id;
uint64_t nport_name;
struct fnic_tport_s *tport;
struct fnic *fnic = iport->fnic;
uint16_t oxid;
nport_id = ntoh24(logo->els.fl_n_port_id);
nport_name = be64_to_cpu(logo->els.fl_n_port_wwn);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Process LOGO request from fcid: 0x%x", nport_id);
if (iport->state != FNIC_IPORT_STATE_READY) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Dropping LOGO req from 0x%x in iport state: %d",
nport_id, iport->state);
return;
}
tport = fnic_find_tport_by_fcid(iport, nport_id);
if (!tport) {
/* We are not logged in with the nport, log and drop... */
FNIC_FCS_DBG(KERN_ERR, fnic,
"Received LOGO from an nport not logged in: 0x%x(0x%llx)",
nport_id, nport_name);
return;
}
if (tport->fcid != nport_id) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Received LOGO with invalid target port fcid: 0x%x(0x%llx)",
nport_id, nport_name);
return;
}
if (tport->timer_pending) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"tport fcid 0x%x: Canceling disc timer\n",
tport->fcid);
fnic_del_tport_timer_sync(fnic, tport);
tport->timer_pending = 0;
}
/* got a logo in response to adisc to a target which has logged out */
if (tport->state == FDLS_TGT_STATE_ADISC) {
tport->retry_counter = 0;
oxid = tport->active_oxid;
fdls_free_oxid(iport, oxid, &tport->active_oxid);
fdls_delete_tport(iport, tport);
fdls_send_logo_resp(iport, &logo->fchdr);
if ((iport->state == FNIC_IPORT_STATE_READY)
&& (fdls_get_state(&iport->fabric) != FDLS_STATE_SEND_GPNFT)
&& (fdls_get_state(&iport->fabric) != FDLS_STATE_RSCN_GPN_FT)) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Sending GPNFT in response to LOGO from Target:0x%x",
nport_id);
fdls_send_gpn_ft(iport, FDLS_STATE_SEND_GPNFT);
return;
}
} else {
fdls_delete_tport(iport, tport);
}
if (iport->state == FNIC_IPORT_STATE_READY) {
fdls_send_logo_resp(iport, &logo->fchdr);
if ((fdls_get_state(&iport->fabric) != FDLS_STATE_SEND_GPNFT) &&
(fdls_get_state(&iport->fabric) != FDLS_STATE_RSCN_GPN_FT)) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Sending GPNFT in response to LOGO from Target:0x%x",
nport_id);
fdls_send_gpn_ft(iport, FDLS_STATE_SEND_GPNFT);
}
}
}
static void
fdls_process_rscn(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
{
struct fc_std_rscn *rscn;
struct fc_els_rscn_page *rscn_port = NULL;
int num_ports;
struct fnic_tport_s *tport, *next;
uint32_t nport_id;
uint8_t fcid[3];
int newports = 0;
struct fnic_fdls_fabric_s *fdls = &iport->fabric;
struct fnic *fnic = iport->fnic;
int rscn_type = NOT_PC_RSCN;
uint32_t sid = ntoh24(fchdr->fh_s_id);
unsigned long reset_fnic_list_lock_flags = 0;
uint16_t rscn_payload_len;
atomic64_inc(&iport->iport_stats.num_rscns);
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDLS process RSCN %p", iport);
if (iport->state != FNIC_IPORT_STATE_READY) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDLS RSCN received in state(%d). Dropping",
fdls_get_state(fdls));
return;
}
rscn = (struct fc_std_rscn *)fchdr;
rscn_payload_len = be16_to_cpu(rscn->els.rscn_plen);
/* frame validation */
if ((rscn_payload_len % 4 != 0) || (rscn_payload_len < 8)
|| (rscn_payload_len > 1024)
|| (rscn->els.rscn_page_len != 4)) {
num_ports = 0;
if ((rscn_payload_len == 0xFFFF)
&& (sid == FC_FID_FCTRL)) {
rscn_type = PC_RSCN;
FNIC_FCS_DBG(KERN_INFO, fnic,
"pcrscn: PCRSCN received. sid: 0x%x payload len: 0x%x",
sid, rscn_payload_len);
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"RSCN payload_len: 0x%x page_len: 0x%x",
rscn_payload_len, rscn->els.rscn_page_len);
/* if this happens then we need to send ADISC to all the tports. */
list_for_each_entry_safe(tport, next, &iport->tport_list, links) {
if (tport->state == FDLS_TGT_STATE_READY)
tport->flags |= FNIC_FDLS_TPORT_SEND_ADISC;
FNIC_FCS_DBG(KERN_INFO, fnic,
"RSCN for port id: 0x%x", tport->fcid);
}
} /* end else */
} else {
num_ports = (rscn_payload_len - 4) / rscn->els.rscn_page_len;
rscn_port = (struct fc_els_rscn_page *)(rscn + 1);
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"RSCN received for num_ports: %d payload_len: %d page_len: %d ",
num_ports, rscn_payload_len, rscn->els.rscn_page_len);
/*
* RSCN have at least one Port_ID page , but may not have any port_id
* in it. If no port_id is specified in the Port_ID page , we send
* ADISC to all the tports
*/
while (num_ports) {
memcpy(fcid, rscn_port->rscn_fid, 3);
nport_id = ntoh24(fcid);
rscn_port++;
num_ports--;
/* if this happens then we need to send ADISC to all the tports. */
if (nport_id == 0) {
list_for_each_entry_safe(tport, next, &iport->tport_list,
links) {
if (tport->state == FDLS_TGT_STATE_READY)
tport->flags |= FNIC_FDLS_TPORT_SEND_ADISC;
FNIC_FCS_DBG(KERN_INFO, fnic,
"RSCN for port id: 0x%x", tport->fcid);
}
break;
}
tport = fnic_find_tport_by_fcid(iport, nport_id);
FNIC_FCS_DBG(KERN_INFO, fnic,
"RSCN port id list: 0x%x", nport_id);
if (!tport) {
newports++;
continue;
}
if (tport->state == FDLS_TGT_STATE_READY)
tport->flags |= FNIC_FDLS_TPORT_SEND_ADISC;
}
if (pc_rscn_handling_feature_flag == PC_RSCN_HANDLING_FEATURE_ON &&
rscn_type == PC_RSCN && fnic->role == FNIC_ROLE_FCP_INITIATOR) {
if (fnic->pc_rscn_handling_status == PC_RSCN_HANDLING_IN_PROGRESS) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"PCRSCN handling already in progress. Skip host reset: %d",
iport->fnic->fnic_num);
return;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"Processing PCRSCN. Queuing fnic for host reset: %d",
iport->fnic->fnic_num);
fnic->pc_rscn_handling_status = PC_RSCN_HANDLING_IN_PROGRESS;
spin_unlock_irqrestore(&fnic->fnic_lock, fnic->lock_flags);
spin_lock_irqsave(&reset_fnic_list_lock,
reset_fnic_list_lock_flags);
list_add_tail(&fnic->links, &reset_fnic_list);
spin_unlock_irqrestore(&reset_fnic_list_lock,
reset_fnic_list_lock_flags);
queue_work(reset_fnic_work_queue, &reset_fnic_work);
spin_lock_irqsave(&fnic->fnic_lock, fnic->lock_flags);
} else {
FNIC_FCS_DBG(KERN_INFO, fnic,
"FDLS process RSCN sending GPN_FT: newports: %d", newports);
fdls_send_gpn_ft(iport, FDLS_STATE_RSCN_GPN_FT);
fdls_send_rscn_resp(iport, fchdr);
}
}
void fnic_fdls_disc_start(struct fnic_iport_s *iport)
{
struct fnic *fnic = iport->fnic;
if (IS_FNIC_FCP_INITIATOR(fnic)) {
fc_host_fabric_name(iport->fnic->host) = 0;
fc_host_post_event(iport->fnic->host, fc_get_event_number(),
FCH_EVT_LIPRESET, 0);
}
if (!iport->usefip) {
if (iport->flags & FNIC_FIRST_LINK_UP) {
spin_unlock_irqrestore(&fnic->fnic_lock, fnic->lock_flags);
fnic_fcpio_reset(iport->fnic);
spin_lock_irqsave(&fnic->fnic_lock, fnic->lock_flags);
iport->flags &= ~FNIC_FIRST_LINK_UP;
}
fnic_fdls_start_flogi(iport);
} else
fnic_fdls_start_plogi(iport);
}
static void
fdls_process_adisc_req(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
struct fc_std_els_adisc *padisc_acc;
struct fc_std_els_adisc *adisc_req = (struct fc_std_els_adisc *)fchdr;
uint64_t frame_wwnn;
uint64_t frame_wwpn;
uint32_t tgt_fcid;
struct fnic_tport_s *tport;
uint8_t *fcid;
uint8_t *rjt_frame;
uint8_t *acc_frame;
struct fc_std_els_rjt_rsp *prjts_rsp;
uint16_t oxid;
struct fnic *fnic = iport->fnic;
uint16_t rjt_frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_els_rjt_rsp);
uint16_t acc_frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
sizeof(struct fc_std_els_adisc);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Process ADISC request %d", iport->fnic->fnic_num);
fcid = FNIC_STD_GET_S_ID(fchdr);
tgt_fcid = ntoh24(fcid);
tport = fnic_find_tport_by_fcid(iport, tgt_fcid);
if (!tport) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"tport for fcid: 0x%x not found. Dropping ADISC req.",
tgt_fcid);
return;
}
if (iport->state != FNIC_IPORT_STATE_READY) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Dropping ADISC req from fcid: 0x%x in iport state: %d",
tgt_fcid, iport->state);
return;
}
frame_wwnn = be64_to_cpu(adisc_req->els.adisc_wwnn);
frame_wwpn = be64_to_cpu(adisc_req->els.adisc_wwpn);
if ((frame_wwnn != tport->wwnn) || (frame_wwpn != tport->wwpn)) {
/* send reject */
FNIC_FCS_DBG(KERN_ERR, fnic,
"ADISC req from fcid: 0x%x mismatch wwpn: 0x%llx wwnn: 0x%llx",
tgt_fcid, frame_wwpn, frame_wwnn);
FNIC_FCS_DBG(KERN_ERR, fnic,
"local tport wwpn: 0x%llx wwnn: 0x%llx. Sending RJT",
tport->wwpn, tport->wwnn);
rjt_frame = fdls_alloc_frame(iport);
if (rjt_frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate rjt_frame to send response to ADISC request");
return;
}
prjts_rsp = (struct fc_std_els_rjt_rsp *) (rjt_frame + FNIC_ETH_FCOE_HDRS_OFFSET);
fdls_init_els_rjt_frame(rjt_frame, iport);
prjts_rsp->rej.er_reason = 0x03; /* logical error */
prjts_rsp->rej.er_explan = 0x1E; /* N_port login required */
prjts_rsp->rej.er_vendor = 0x0;
FNIC_STD_SET_S_ID(prjts_rsp->fchdr, fchdr->fh_d_id);
FNIC_STD_SET_D_ID(prjts_rsp->fchdr, fchdr->fh_s_id);
oxid = FNIC_STD_GET_OX_ID(fchdr);
FNIC_STD_SET_OX_ID(prjts_rsp->fchdr, oxid);
fnic_send_fcoe_frame(iport, rjt_frame, rjt_frame_size);
return;
}
acc_frame = fdls_alloc_frame(iport);
if (acc_frame == NULL) {
FNIC_FCS_DBG(KERN_ERR, fnic,
"Failed to allocate frame to send ADISC accept");
return;
}
padisc_acc = (struct fc_std_els_adisc *) (acc_frame + FNIC_ETH_FCOE_HDRS_OFFSET);
FNIC_STD_SET_S_ID(padisc_acc->fchdr, fchdr->fh_d_id);
FNIC_STD_SET_D_ID(padisc_acc->fchdr, fchdr->fh_s_id);
FNIC_STD_SET_F_CTL(padisc_acc->fchdr, FNIC_ELS_REP_FCTL << 16);
FNIC_STD_SET_R_CTL(padisc_acc->fchdr, FC_RCTL_ELS_REP);
FNIC_STD_SET_TYPE(padisc_acc->fchdr, FC_TYPE_ELS);
oxid = FNIC_STD_GET_OX_ID(fchdr);
FNIC_STD_SET_OX_ID(padisc_acc->fchdr, oxid);
FNIC_STD_SET_RX_ID(padisc_acc->fchdr, FNIC_UNASSIGNED_RXID);
padisc_acc->els.adisc_cmd = ELS_LS_ACC;
FNIC_STD_SET_NPORT_NAME(&padisc_acc->els.adisc_wwpn,
iport->wwpn);
FNIC_STD_SET_NODE_NAME(&padisc_acc->els.adisc_wwnn,
iport->wwnn);
memcpy(padisc_acc->els.adisc_port_id, fchdr->fh_d_id, 3);
fnic_send_fcoe_frame(iport, acc_frame, acc_frame_size);
}
/*
* Performs a validation for all FCOE frames and return the frame type
*/
int
fnic_fdls_validate_and_get_frame_type(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
{
uint8_t type;
uint8_t *fc_payload;
uint16_t oxid;
uint32_t s_id;
uint32_t d_id;
struct fnic *fnic = iport->fnic;
struct fnic_fdls_fabric_s *fabric = &iport->fabric;
int oxid_frame_type;
oxid = FNIC_STD_GET_OX_ID(fchdr);
fc_payload = (uint8_t *) fchdr + sizeof(struct fc_frame_header);
type = *fc_payload;
s_id = ntoh24(fchdr->fh_s_id);
d_id = ntoh24(fchdr->fh_d_id);
/* some common validation */
if (fdls_get_state(fabric) > FDLS_STATE_FABRIC_FLOGI) {
if (iport->fcid != d_id || (!FNIC_FC_FRAME_CS_CTL(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"invalid frame received. Dropping frame");
return -1;
}
}
/* BLS ABTS response */
if ((fchdr->fh_r_ctl == FC_RCTL_BA_ACC)
|| (fchdr->fh_r_ctl == FC_RCTL_BA_RJT)) {
if (!(FNIC_FC_FRAME_TYPE_BLS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received ABTS invalid frame. Dropping frame");
return -1;
}
if (fdls_is_oxid_fabric_req(oxid)) {
if (!(iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received unexpected ABTS RSP(oxid:0x%x) from 0x%x. Dropping frame",
oxid, s_id);
return -1;
}
return FNIC_FABRIC_BLS_ABTS_RSP;
} else if (fdls_is_oxid_fdmi_req(oxid)) {
return FNIC_FDMI_BLS_ABTS_RSP;
} else if (fdls_is_oxid_tgt_req(oxid)) {
return FNIC_TPORT_BLS_ABTS_RSP;
} else if (fdls_is_oxid_nvme_req(oxid)) {
return FNIC_LS_REQ_ABTS_RSP;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received ABTS rsp with unknown oxid(0x%x) from 0x%x. Dropping frame",
oxid, s_id);
return -1;
}
/* BLS ABTS Req */
if ((fchdr->fh_r_ctl == FC_RCTL_BA_ABTS)
&& (FNIC_FC_FRAME_TYPE_BLS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Receiving Abort Request from s_id: 0x%x", s_id);
return FNIC_BLS_ABTS_REQ;
}
/* unsolicited requests frames */
if (FNIC_FC_FRAME_UNSOLICITED(fchdr)) {
switch (type) {
case ELS_LOGO:
if ((!FNIC_FC_FRAME_FCTL_FIRST_LAST_SEQINIT(fchdr))
|| (!FNIC_FC_FRAME_UNSOLICITED(fchdr))
|| (!FNIC_FC_FRAME_TYPE_ELS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received LOGO invalid frame. Dropping frame");
return -1;
}
return FNIC_ELS_LOGO_REQ;
case ELS_RSCN:
if ((!FNIC_FC_FRAME_FCTL_FIRST_LAST_SEQINIT(fchdr))
|| (!FNIC_FC_FRAME_TYPE_ELS(fchdr))
|| (!FNIC_FC_FRAME_UNSOLICITED(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received RSCN invalid FCTL. Dropping frame");
return -1;
}
if (s_id != FC_FID_FCTRL)
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received RSCN from target FCTL: 0x%x type: 0x%x s_id: 0x%x.",
fchdr->fh_f_ctl[0], fchdr->fh_type, s_id);
return FNIC_ELS_RSCN_REQ;
case ELS_PLOGI:
return FNIC_ELS_PLOGI_REQ;
case ELS_ECHO:
return FNIC_ELS_ECHO_REQ;
case ELS_ADISC:
return FNIC_ELS_ADISC;
case ELS_RLS:
return FNIC_ELS_RLS;
case ELS_RRQ:
return FNIC_ELS_RRQ;
default:
FNIC_FCS_DBG(KERN_INFO, fnic,
"Unsupported frame (type:0x%02x) from fcid: 0x%x",
type, s_id);
return FNIC_ELS_UNSUPPORTED_REQ;
}
}
/* solicited response from fabric or target */
oxid_frame_type = FNIC_FRAME_TYPE(oxid);
FNIC_FCS_DBG(KERN_INFO, fnic,
"oxid frame code: 0x%x, oxid: 0x%x\n", oxid_frame_type, oxid);
switch (oxid_frame_type) {
case FNIC_FRAME_TYPE_FABRIC_FLOGI:
if (type == ELS_LS_ACC) {
if ((s_id != FC_FID_FLOGI)
|| (!FNIC_FC_FRAME_TYPE_ELS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received unknown frame. Dropping frame");
return -1;
}
}
return FNIC_FABRIC_FLOGI_RSP;
case FNIC_FRAME_TYPE_FABRIC_PLOGI:
if (type == ELS_LS_ACC) {
if ((s_id != FC_FID_DIR_SERV)
|| (!FNIC_FC_FRAME_TYPE_ELS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received unknown frame. Dropping frame");
return -1;
}
}
return FNIC_FABRIC_PLOGI_RSP;
case FNIC_FRAME_TYPE_FABRIC_SCR:
if (type == ELS_LS_ACC) {
if ((s_id != FC_FID_FCTRL)
|| (!FNIC_FC_FRAME_TYPE_ELS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received unknown frame. Dropping frame");
return -1;
}
}
return FNIC_FABRIC_SCR_RSP;
case FNIC_FRAME_TYPE_FABRIC_RPN:
if ((s_id != FC_FID_DIR_SERV) || (!FNIC_FC_FRAME_TYPE_FC_GS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received unknown frame. Dropping frame");
return -1;
}
return FNIC_FABRIC_RPN_RSP;
case FNIC_FRAME_TYPE_FABRIC_RFT:
if ((s_id != FC_FID_DIR_SERV) || (!FNIC_FC_FRAME_TYPE_FC_GS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received unknown frame. Dropping frame");
return -1;
}
return FNIC_FABRIC_RFT_RSP;
case FNIC_FRAME_TYPE_FABRIC_RFF:
if ((s_id != FC_FID_DIR_SERV) || (!FNIC_FC_FRAME_TYPE_FC_GS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received unknown frame. Dropping frame");
return -1;
}
return FNIC_FABRIC_RFF_RSP;
case FNIC_FRAME_TYPE_FABRIC_GPN_FT:
if ((s_id != FC_FID_DIR_SERV) || (!FNIC_FC_FRAME_TYPE_FC_GS(fchdr))) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received unknown frame. Dropping frame");
return -1;
}
return FNIC_FABRIC_GPN_FT_RSP;
case FNIC_FRAME_TYPE_FABRIC_LOGO:
return FNIC_FABRIC_LOGO_RSP;
case FNIC_FRAME_TYPE_FDMI_PLOGI:
return FNIC_FDMI_PLOGI_RSP;
case FNIC_FRAME_TYPE_FDMI_RHBA:
return FNIC_FDMI_REG_HBA_RSP;
case FNIC_FRAME_TYPE_FDMI_RPA:
return FNIC_FDMI_RPA_RSP;
case FNIC_FRAME_TYPE_TGT_PLOGI:
return FNIC_TPORT_PLOGI_RSP;
case FNIC_FRAME_TYPE_TGT_PRLI:
return FNIC_TPORT_PRLI_RSP;
case FNIC_FRAME_TYPE_TGT_ADISC:
return FNIC_TPORT_ADISC_RSP;
case FNIC_FRAME_TYPE_TGT_LOGO:
if (!FNIC_FC_FRAME_TYPE_ELS(fchdr)) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"Dropping Unknown frame in tport solicited exchange range type: 0x%x.",
fchdr->fh_type);
return -1;
}
return FNIC_TPORT_LOGO_RSP;
default:
/* Drop the Rx frame and log/stats it */
FNIC_FCS_DBG(KERN_INFO, fnic,
"Solicited response: unknown OXID: 0x%x", oxid);
return -1;
}
return -1;
}
void fnic_fdls_recv_frame(struct fnic_iport_s *iport, void *rx_frame,
int len, int fchdr_offset)
{
struct fc_frame_header *fchdr;
uint32_t s_id = 0;
uint32_t d_id = 0;
struct fnic *fnic = iport->fnic;
int frame_type;
fchdr = (struct fc_frame_header *) ((uint8_t *) rx_frame + fchdr_offset);
s_id = ntoh24(fchdr->fh_s_id);
d_id = ntoh24(fchdr->fh_d_id);
fnic_debug_dump_fc_frame(fnic, fchdr, len, "Incoming");
frame_type =
fnic_fdls_validate_and_get_frame_type(iport, fchdr);
/*if we are in flogo drop everything else */
if (iport->fabric.state == FDLS_STATE_FABRIC_LOGO &&
frame_type != FNIC_FABRIC_LOGO_RSP)
return;
switch (frame_type) {
case FNIC_FABRIC_FLOGI_RSP:
fdls_process_flogi_rsp(iport, fchdr, rx_frame);
break;
case FNIC_FABRIC_PLOGI_RSP:
fdls_process_fabric_plogi_rsp(iport, fchdr);
break;
case FNIC_FDMI_PLOGI_RSP:
fdls_process_fdmi_plogi_rsp(iport, fchdr);
break;
case FNIC_FABRIC_RPN_RSP:
fdls_process_rpn_id_rsp(iport, fchdr);
break;
case FNIC_FABRIC_RFT_RSP:
fdls_process_rft_id_rsp(iport, fchdr);
break;
case FNIC_FABRIC_RFF_RSP:
fdls_process_rff_id_rsp(iport, fchdr);
break;
case FNIC_FABRIC_SCR_RSP:
fdls_process_scr_rsp(iport, fchdr);
break;
case FNIC_FABRIC_GPN_FT_RSP:
fdls_process_gpn_ft_rsp(iport, fchdr, len);
break;
case FNIC_TPORT_PLOGI_RSP:
fdls_process_tgt_plogi_rsp(iport, fchdr);
break;
case FNIC_TPORT_PRLI_RSP:
fdls_process_tgt_prli_rsp(iport, fchdr);
break;
case FNIC_TPORT_ADISC_RSP:
fdls_process_tgt_adisc_rsp(iport, fchdr);
break;
case FNIC_TPORT_BLS_ABTS_RSP:
fdls_process_tgt_abts_rsp(iport, fchdr);
break;
case FNIC_TPORT_LOGO_RSP:
/* Logo response from tgt which we have deleted */
FNIC_FCS_DBG(KERN_INFO, fnic,
"Logo response from tgt: 0x%x",
ntoh24(fchdr->fh_s_id));
break;
case FNIC_FABRIC_LOGO_RSP:
fdls_process_fabric_logo_rsp(iport, fchdr);
break;
case FNIC_FABRIC_BLS_ABTS_RSP:
fdls_process_fabric_abts_rsp(iport, fchdr);
break;
case FNIC_LS_REQ_ABTS_RSP:
nvfnic_process_ls_abts_rsp(iport, fchdr);
break;
case FNIC_FDMI_BLS_ABTS_RSP:
fdls_process_fdmi_abts_rsp(iport, fchdr);
break;
case FNIC_BLS_ABTS_REQ:
fdls_process_abts_req(iport, fchdr);
break;
case FNIC_ELS_UNSUPPORTED_REQ:
fdls_process_unsupported_els_req(iport, fchdr);
break;
case FNIC_ELS_PLOGI_REQ:
fdls_process_plogi_req(iport, fchdr);
break;
case FNIC_ELS_RSCN_REQ:
fdls_process_rscn(iport, fchdr);
break;
case FNIC_ELS_LOGO_REQ:
fdls_process_logo_req(iport, fchdr);
break;
case FNIC_ELS_RRQ:
case FNIC_ELS_ECHO_REQ:
fdls_process_els_req(iport, fchdr, len);
break;
case FNIC_ELS_ADISC:
fdls_process_adisc_req(iport, fchdr);
break;
case FNIC_ELS_RLS:
fdls_process_rls_req(iport, fchdr);
break;
case FNIC_FDMI_REG_HBA_RSP:
case FNIC_FDMI_RPA_RSP:
fdls_process_fdmi_reg_ack(iport, fchdr, frame_type);
break;
default:
FNIC_FCS_DBG(KERN_INFO, fnic,
"s_id: 0x%x d_did: 0x%x", s_id, d_id);
FNIC_FCS_DBG(KERN_INFO, fnic,
"Received unknown FCoE frame of len: %d. Dropping frame", len);
break;
}
}
void fnic_fdls_disc_init(struct fnic_iport_s *iport)
{
fdls_reset_oxid_pool(iport);
fdls_set_state((&iport->fabric), FDLS_STATE_INIT);
}
void fnic_fdls_link_down(struct fnic_iport_s *iport)
{
struct fnic_tport_s *tport, *next;
struct fnic *fnic = iport->fnic;
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS processing link down", iport->fcid);
fdls_set_state((&iport->fabric), FDLS_STATE_LINKDOWN);
iport->fabric.flags = 0;
if (IS_FNIC_FCP_INITIATOR(fnic) ||
IS_FNIC_NVME_INITIATOR(fnic)) {
spin_unlock_irqrestore(&fnic->fnic_lock, fnic->lock_flags);
fnic_fcpio_reset(iport->fnic);
spin_lock_irqsave(&fnic->fnic_lock, fnic->lock_flags);
list_for_each_entry_safe(tport, next, &iport->tport_list, links) {
FNIC_FCS_DBG(KERN_INFO, fnic,
"removing rport: 0x%x", tport->fcid);
fdls_delete_tport(iport, tport);
}
}
fdls_reset_oxid_pool(iport);
if (fnic_fdmi_support == 1) {
if (iport->fabric.fdmi_pending > 0) {
timer_delete_sync(&iport->fabric.fdmi_timer);
iport->fabric.fdmi_pending = 0;
}
iport->flags &= ~FNIC_FDMI_ACTIVE;
}
FNIC_FCS_DBG(KERN_INFO, fnic,
"0x%x: FDLS finish processing link down", iport->fcid);
}