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linux-next/drivers/scsi/bfa/bfa_fcs.c
Vijaya Mohan Guvva bbe37a67d9 [SCSI] bfa: Support for FC BB credit recovery 
This patch includes changes to  1) Enable/disable fc credit recovery on
Brocade FC adapter port operating at max supported speed. 2) Get credit
recovery status and stats related to credit loss and recovered credits

Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-06-26 11:40:12 -07:00

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/*
* Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
* All rights reserved
* www.brocade.com
*
* Linux driver for Brocade Fibre Channel Host Bus Adapter.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License (GPL) Version 2 as
* published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
/*
* bfa_fcs.c BFA FCS main
*/
#include "bfad_drv.h"
#include "bfad_im.h"
#include "bfa_fcs.h"
#include "bfa_fcbuild.h"
BFA_TRC_FILE(FCS, FCS);
/*
* FCS sub-modules
*/
struct bfa_fcs_mod_s {
void (*attach) (struct bfa_fcs_s *fcs);
void (*modinit) (struct bfa_fcs_s *fcs);
void (*modexit) (struct bfa_fcs_s *fcs);
};
#define BFA_FCS_MODULE(_mod) { _mod ## _modinit, _mod ## _modexit }
static struct bfa_fcs_mod_s fcs_modules[] = {
{ bfa_fcs_port_attach, NULL, NULL },
{ bfa_fcs_uf_attach, NULL, NULL },
{ bfa_fcs_fabric_attach, bfa_fcs_fabric_modinit,
bfa_fcs_fabric_modexit },
};
/*
* fcs_api BFA FCS API
*/
static void
bfa_fcs_exit_comp(void *fcs_cbarg)
{
struct bfa_fcs_s *fcs = fcs_cbarg;
struct bfad_s *bfad = fcs->bfad;
complete(&bfad->comp);
}
/*
* fcs_api BFA FCS API
*/
/*
* fcs attach -- called once to initialize data structures at driver attach time
*/
void
bfa_fcs_attach(struct bfa_fcs_s *fcs, struct bfa_s *bfa, struct bfad_s *bfad,
bfa_boolean_t min_cfg)
{
int i;
struct bfa_fcs_mod_s *mod;
fcs->bfa = bfa;
fcs->bfad = bfad;
fcs->min_cfg = min_cfg;
fcs->num_rport_logins = 0;
bfa->fcs = BFA_TRUE;
fcbuild_init();
for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
mod = &fcs_modules[i];
if (mod->attach)
mod->attach(fcs);
}
}
/*
* fcs initialization, called once after bfa initialization is complete
*/
void
bfa_fcs_init(struct bfa_fcs_s *fcs)
{
int i;
struct bfa_fcs_mod_s *mod;
for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
mod = &fcs_modules[i];
if (mod->modinit)
mod->modinit(fcs);
}
}
/*
* FCS update cfg - reset the pwwn/nwwn of fabric base logical port
* with values learned during bfa_init firmware GETATTR REQ.
*/
void
bfa_fcs_update_cfg(struct bfa_fcs_s *fcs)
{
struct bfa_fcs_fabric_s *fabric = &fcs->fabric;
struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
struct bfa_ioc_s *ioc = &fabric->fcs->bfa->ioc;
port_cfg->nwwn = ioc->attr->nwwn;
port_cfg->pwwn = ioc->attr->pwwn;
}
/*
* Stop FCS operations.
*/
void
bfa_fcs_stop(struct bfa_fcs_s *fcs)
{
bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
bfa_wc_up(&fcs->wc);
bfa_fcs_fabric_modstop(fcs);
bfa_wc_wait(&fcs->wc);
}
/*
* fcs pbc vport initialization
*/
void
bfa_fcs_pbc_vport_init(struct bfa_fcs_s *fcs)
{
int i, npbc_vports;
struct bfi_pbc_vport_s pbc_vports[BFI_PBC_MAX_VPORTS];
/* Initialize pbc vports */
if (!fcs->min_cfg) {
npbc_vports =
bfa_iocfc_get_pbc_vports(fcs->bfa, pbc_vports);
for (i = 0; i < npbc_vports; i++)
bfa_fcb_pbc_vport_create(fcs->bfa->bfad, pbc_vports[i]);
}
}
/*
* brief
* FCS driver details initialization.
*
* param[in] fcs FCS instance
* param[in] driver_info Driver Details
*
* return None
*/
void
bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
struct bfa_fcs_driver_info_s *driver_info)
{
fcs->driver_info = *driver_info;
bfa_fcs_fabric_psymb_init(&fcs->fabric);
bfa_fcs_fabric_nsymb_init(&fcs->fabric);
}
/*
* brief
* FCS instance cleanup and exit.
*
* param[in] fcs FCS instance
* return None
*/
void
bfa_fcs_exit(struct bfa_fcs_s *fcs)
{
struct bfa_fcs_mod_s *mod;
int nmods, i;
bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
nmods = sizeof(fcs_modules) / sizeof(fcs_modules[0]);
for (i = 0; i < nmods; i++) {
mod = &fcs_modules[i];
if (mod->modexit) {
bfa_wc_up(&fcs->wc);
mod->modexit(fcs);
}
}
bfa_wc_wait(&fcs->wc);
}
/*
* Fabric module implementation.
*/
#define BFA_FCS_FABRIC_RETRY_DELAY (2000) /* Milliseconds */
#define BFA_FCS_FABRIC_CLEANUP_DELAY (10000) /* Milliseconds */
#define bfa_fcs_fabric_set_opertype(__fabric) do { \
if (bfa_fcport_get_topology((__fabric)->fcs->bfa) \
== BFA_PORT_TOPOLOGY_P2P) { \
if (fabric->fab_type == BFA_FCS_FABRIC_SWITCHED) \
(__fabric)->oper_type = BFA_PORT_TYPE_NPORT; \
else \
(__fabric)->oper_type = BFA_PORT_TYPE_P2P; \
} else \
(__fabric)->oper_type = BFA_PORT_TYPE_NLPORT; \
} while (0)
/*
* forward declarations
*/
static void bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_delay(void *cbarg);
static void bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_delete_comp(void *cbarg);
static void bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_stop_comp(void *cbarg);
static void bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric,
struct fchs_s *fchs, u16 len);
static void bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
struct fchs_s *fchs, u16 len);
static void bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric);
static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
struct bfa_fcxp_s *fcxp, void *cbarg,
bfa_status_t status,
u32 rsp_len,
u32 resid_len,
struct fchs_s *rspfchs);
static void bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
static void bfa_fcs_fabric_sm_cleanup(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event);
/*
* Beginning state before fabric creation.
*/
static void
bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_CREATE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
bfa_fcs_fabric_init(fabric);
bfa_fcs_lport_init(&fabric->bport, &fabric->bport.port_cfg);
break;
case BFA_FCS_FABRIC_SM_LINK_UP:
case BFA_FCS_FABRIC_SM_LINK_DOWN:
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* Beginning state before fabric creation.
*/
static void
bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
struct bfa_s *bfa = fabric->fcs->bfa;
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_START:
if (!bfa_fcport_is_linkup(fabric->fcs->bfa)) {
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
break;
}
if (bfa_fcport_get_topology(bfa) ==
BFA_PORT_TOPOLOGY_LOOP) {
fabric->fab_type = BFA_FCS_FABRIC_LOOP;
fabric->bport.pid = bfa_fcport_get_myalpa(bfa);
fabric->bport.pid = bfa_hton3b(fabric->bport.pid);
bfa_sm_set_state(fabric,
bfa_fcs_fabric_sm_online);
bfa_fcs_fabric_set_opertype(fabric);
bfa_fcs_lport_online(&fabric->bport);
} else {
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
bfa_fcs_fabric_login(fabric);
}
break;
case BFA_FCS_FABRIC_SM_LINK_UP:
case BFA_FCS_FABRIC_SM_LINK_DOWN:
break;
case BFA_FCS_FABRIC_SM_DELETE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
bfa_fcs_fabric_delete(fabric);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* Link is down, awaiting LINK UP event from port. This is also the
* first state at fabric creation.
*/
static void
bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
struct bfa_s *bfa = fabric->fcs->bfa;
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_LINK_UP:
if (bfa_fcport_get_topology(bfa) != BFA_PORT_TOPOLOGY_LOOP) {
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
bfa_fcs_fabric_login(fabric);
break;
}
fabric->fab_type = BFA_FCS_FABRIC_LOOP;
fabric->bport.pid = bfa_fcport_get_myalpa(bfa);
fabric->bport.pid = bfa_hton3b(fabric->bport.pid);
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
bfa_fcs_fabric_set_opertype(fabric);
bfa_fcs_lport_online(&fabric->bport);
break;
case BFA_FCS_FABRIC_SM_RETRY_OP:
case BFA_FCS_FABRIC_SM_LOOPBACK:
break;
case BFA_FCS_FABRIC_SM_DELETE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
bfa_fcs_fabric_delete(fabric);
break;
case BFA_FCS_FABRIC_SM_STOP:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
bfa_fcs_fabric_stop(fabric);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* FLOGI is in progress, awaiting FLOGI reply.
*/
static void
bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_CONT_OP:
bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
fabric->bb_credit);
fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;
if (fabric->auth_reqd && fabric->is_auth) {
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth);
bfa_trc(fabric->fcs, event);
} else {
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
bfa_fcs_fabric_notify_online(fabric);
}
break;
case BFA_FCS_FABRIC_SM_RETRY_OP:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi_retry);
bfa_timer_start(fabric->fcs->bfa, &fabric->delay_timer,
bfa_fcs_fabric_delay, fabric,
BFA_FCS_FABRIC_RETRY_DELAY);
break;
case BFA_FCS_FABRIC_SM_LOOPBACK:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_loopback);
bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
bfa_fcs_fabric_set_opertype(fabric);
break;
case BFA_FCS_FABRIC_SM_NO_FABRIC:
fabric->fab_type = BFA_FCS_FABRIC_N2N;
bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
fabric->bb_credit);
bfa_fcs_fabric_notify_online(fabric);
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
break;
case BFA_FCS_FABRIC_SM_LINK_DOWN:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
break;
case BFA_FCS_FABRIC_SM_DELETE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
bfa_fcs_fabric_delete(fabric);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
static void
bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_DELAYED:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
bfa_fcs_fabric_login(fabric);
break;
case BFA_FCS_FABRIC_SM_LINK_DOWN:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
bfa_timer_stop(&fabric->delay_timer);
break;
case BFA_FCS_FABRIC_SM_DELETE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
bfa_timer_stop(&fabric->delay_timer);
bfa_fcs_fabric_delete(fabric);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* Authentication is in progress, awaiting authentication results.
*/
static void
bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_AUTH_FAILED:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
break;
case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
bfa_fcs_fabric_notify_online(fabric);
break;
case BFA_FCS_FABRIC_SM_PERF_EVFP:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp);
break;
case BFA_FCS_FABRIC_SM_LINK_DOWN:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
break;
case BFA_FCS_FABRIC_SM_DELETE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
bfa_fcs_fabric_delete(fabric);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* Authentication failed
*/
void
bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_LINK_DOWN:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
bfa_fcs_fabric_notify_offline(fabric);
break;
case BFA_FCS_FABRIC_SM_DELETE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
bfa_fcs_fabric_delete(fabric);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* Port is in loopback mode.
*/
void
bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_LINK_DOWN:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
bfa_fcs_fabric_notify_offline(fabric);
break;
case BFA_FCS_FABRIC_SM_DELETE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
bfa_fcs_fabric_delete(fabric);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* There is no attached fabric - private loop or NPort-to-NPort topology.
*/
static void
bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_LINK_DOWN:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
bfa_fcs_fabric_notify_offline(fabric);
break;
case BFA_FCS_FABRIC_SM_DELETE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
bfa_fcs_fabric_delete(fabric);
break;
case BFA_FCS_FABRIC_SM_NO_FABRIC:
bfa_trc(fabric->fcs, fabric->bb_credit);
bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
fabric->bb_credit);
break;
case BFA_FCS_FABRIC_SM_RETRY_OP:
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* Fabric is online - normal operating state.
*/
void
bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
struct bfa_s *bfa = fabric->fcs->bfa;
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_LINK_DOWN:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) {
bfa_fcs_lport_offline(&fabric->bport);
} else {
bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
bfa_fcs_fabric_notify_offline(fabric);
}
break;
case BFA_FCS_FABRIC_SM_DELETE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
bfa_fcs_fabric_delete(fabric);
break;
case BFA_FCS_FABRIC_SM_STOP:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_stopping);
bfa_fcs_fabric_stop(fabric);
break;
case BFA_FCS_FABRIC_SM_AUTH_FAILED:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
break;
case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* Exchanging virtual fabric parameters.
*/
static void
bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_CONT_OP:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp_done);
break;
case BFA_FCS_FABRIC_SM_ISOLATE:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_isolated);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* EVFP exchange complete and VFT tagging is enabled.
*/
static void
bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
}
/*
* Port is isolated after EVFP exchange due to VF_ID mismatch (N and F).
*/
static void
bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
char pwwn_ptr[BFA_STRING_32];
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
wwn2str(pwwn_ptr, fabric->bport.port_cfg.pwwn);
BFA_LOG(KERN_INFO, bfad, bfa_log_level,
"Port is isolated due to VF_ID mismatch. "
"PWWN: %s Port VF_ID: %04x switch port VF_ID: %04x.",
pwwn_ptr, fabric->fcs->port_vfid,
fabric->event_arg.swp_vfid);
}
/*
* Fabric is being deleted, awaiting vport delete completions.
*/
static void
bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_DELCOMP:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
bfa_wc_down(&fabric->fcs->wc);
break;
case BFA_FCS_FABRIC_SM_LINK_UP:
break;
case BFA_FCS_FABRIC_SM_LINK_DOWN:
bfa_fcs_fabric_notify_offline(fabric);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* Fabric is being stopped, awaiting vport stop completions.
*/
static void
bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
struct bfa_s *bfa = fabric->fcs->bfa;
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_STOPCOMP:
if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) {
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
} else {
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
bfa_sm_send_event(fabric->lps, BFA_LPS_SM_LOGOUT);
}
break;
case BFA_FCS_FABRIC_SM_LINK_UP:
break;
case BFA_FCS_FABRIC_SM_LINK_DOWN:
if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
else
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* Fabric is being stopped, cleanup without FLOGO
*/
static void
bfa_fcs_fabric_sm_cleanup(struct bfa_fcs_fabric_s *fabric,
enum bfa_fcs_fabric_event event)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, event);
switch (event) {
case BFA_FCS_FABRIC_SM_STOPCOMP:
case BFA_FCS_FABRIC_SM_LOGOCOMP:
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
bfa_wc_down(&(fabric->fcs)->wc);
break;
case BFA_FCS_FABRIC_SM_LINK_DOWN:
/*
* Ignore - can get this event if we get notified about IOC down
* before the fabric completion callbk is done.
*/
break;
default:
bfa_sm_fault(fabric->fcs, event);
}
}
/*
* fcs_fabric_private fabric private functions
*/
static void
bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric)
{
struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
port_cfg->roles = BFA_LPORT_ROLE_FCP_IM;
port_cfg->nwwn = fabric->fcs->bfa->ioc.attr->nwwn;
port_cfg->pwwn = fabric->fcs->bfa->ioc.attr->pwwn;
}
/*
* Port Symbolic Name Creation for base port.
*/
void
bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
{
struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
/* Model name/number */
strncpy((char *)&port_cfg->sym_name, model,
BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
/* Driver Version */
strncat((char *)&port_cfg->sym_name, (char *)driver_info->version,
BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
/* Host machine name */
strncat((char *)&port_cfg->sym_name,
(char *)driver_info->host_machine_name,
BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
/*
* Host OS Info :
* If OS Patch Info is not there, do not truncate any bytes from the
* OS name string and instead copy the entire OS info string (64 bytes).
*/
if (driver_info->host_os_patch[0] == '\0') {
strncat((char *)&port_cfg->sym_name,
(char *)driver_info->host_os_name,
BFA_FCS_OS_STR_LEN);
strncat((char *)&port_cfg->sym_name,
BFA_FCS_PORT_SYMBNAME_SEPARATOR,
sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
} else {
strncat((char *)&port_cfg->sym_name,
(char *)driver_info->host_os_name,
BFA_FCS_PORT_SYMBNAME_OSINFO_SZ);
strncat((char *)&port_cfg->sym_name,
BFA_FCS_PORT_SYMBNAME_SEPARATOR,
sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
/* Append host OS Patch Info */
strncat((char *)&port_cfg->sym_name,
(char *)driver_info->host_os_patch,
BFA_FCS_PORT_SYMBNAME_OSPATCH_SZ);
}
/* null terminate */
port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
}
/*
* Node Symbolic Name Creation for base port and all vports
*/
void
bfa_fcs_fabric_nsymb_init(struct bfa_fcs_fabric_s *fabric)
{
struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
/* Model name/number */
strncpy((char *)&port_cfg->node_sym_name, model,
BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
strncat((char *)&port_cfg->node_sym_name,
BFA_FCS_PORT_SYMBNAME_SEPARATOR,
sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
/* Driver Version */
strncat((char *)&port_cfg->node_sym_name, (char *)driver_info->version,
BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
strncat((char *)&port_cfg->node_sym_name,
BFA_FCS_PORT_SYMBNAME_SEPARATOR,
sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
/* Host machine name */
strncat((char *)&port_cfg->node_sym_name,
(char *)driver_info->host_machine_name,
BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
strncat((char *)&port_cfg->node_sym_name,
BFA_FCS_PORT_SYMBNAME_SEPARATOR,
sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
/* null terminate */
port_cfg->node_sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
}
/*
* bfa lps login completion callback
*/
void
bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
{
struct bfa_fcs_fabric_s *fabric = uarg;
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_trc(fabric->fcs, status);
switch (status) {
case BFA_STATUS_OK:
fabric->stats.flogi_accepts++;
break;
case BFA_STATUS_INVALID_MAC:
/* Only for CNA */
fabric->stats.flogi_acc_err++;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
return;
case BFA_STATUS_EPROTOCOL:
switch (fabric->lps->ext_status) {
case BFA_EPROTO_BAD_ACCEPT:
fabric->stats.flogi_acc_err++;
break;
case BFA_EPROTO_UNKNOWN_RSP:
fabric->stats.flogi_unknown_rsp++;
break;
default:
break;
}
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
return;
case BFA_STATUS_FABRIC_RJT:
fabric->stats.flogi_rejects++;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
return;
default:
fabric->stats.flogi_rsp_err++;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
return;
}
fabric->bb_credit = fabric->lps->pr_bbcred;
bfa_trc(fabric->fcs, fabric->bb_credit);
if (!(fabric->lps->brcd_switch))
fabric->fabric_name = fabric->lps->pr_nwwn;
/*
* Check port type. It should be 1 = F-port.
*/
if (fabric->lps->fport) {
fabric->bport.pid = fabric->lps->lp_pid;
fabric->is_npiv = fabric->lps->npiv_en;
fabric->is_auth = fabric->lps->auth_req;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_CONT_OP);
} else {
/*
* Nport-2-Nport direct attached
*/
fabric->bport.port_topo.pn2n.rem_port_wwn =
fabric->lps->pr_pwwn;
fabric->fab_type = BFA_FCS_FABRIC_N2N;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
}
bfa_trc(fabric->fcs, fabric->bport.pid);
bfa_trc(fabric->fcs, fabric->is_npiv);
bfa_trc(fabric->fcs, fabric->is_auth);
}
/*
* Allocate and send FLOGI.
*/
static void
bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
{
struct bfa_s *bfa = fabric->fcs->bfa;
struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
u8 alpa = 0;
bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd);
fabric->stats.flogi_sent++;
}
static void
bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric)
{
struct bfa_fcs_vport_s *vport;
struct list_head *qe, *qen;
bfa_trc(fabric->fcs, fabric->fabric_name);
bfa_fcs_fabric_set_opertype(fabric);
fabric->stats.fabric_onlines++;
/*
* notify online event to base and then virtual ports
*/
bfa_fcs_lport_online(&fabric->bport);
list_for_each_safe(qe, qen, &fabric->vport_q) {
vport = (struct bfa_fcs_vport_s *) qe;
bfa_fcs_vport_online(vport);
}
}
static void
bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric)
{
struct bfa_fcs_vport_s *vport;
struct list_head *qe, *qen;
bfa_trc(fabric->fcs, fabric->fabric_name);
fabric->stats.fabric_offlines++;
/*
* notify offline event first to vports and then base port.
*/
list_for_each_safe(qe, qen, &fabric->vport_q) {
vport = (struct bfa_fcs_vport_s *) qe;
bfa_fcs_vport_offline(vport);
}
bfa_fcs_lport_offline(&fabric->bport);
fabric->fabric_name = 0;
fabric->fabric_ip_addr[0] = 0;
}
static void
bfa_fcs_fabric_delay(void *cbarg)
{
struct bfa_fcs_fabric_s *fabric = cbarg;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELAYED);
}
/*
* Stop all vports and wait for vport stop completions.
*/
static void
bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s *fabric)
{
struct bfa_fcs_vport_s *vport;
struct list_head *qe, *qen;
bfa_wc_init(&fabric->stop_wc, bfa_fcs_fabric_stop_comp, fabric);
list_for_each_safe(qe, qen, &fabric->vport_q) {
vport = (struct bfa_fcs_vport_s *) qe;
bfa_wc_up(&fabric->stop_wc);
bfa_fcs_vport_fcs_stop(vport);
}
bfa_wc_up(&fabric->stop_wc);
bfa_fcs_lport_stop(&fabric->bport);
bfa_wc_wait(&fabric->stop_wc);
}
/*
* Delete all vports and wait for vport delete completions.
*/
static void
bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric)
{
struct bfa_fcs_vport_s *vport;
struct list_head *qe, *qen;
list_for_each_safe(qe, qen, &fabric->vport_q) {
vport = (struct bfa_fcs_vport_s *) qe;
bfa_fcs_vport_fcs_delete(vport);
}
bfa_fcs_lport_delete(&fabric->bport);
bfa_wc_wait(&fabric->wc);
}
static void
bfa_fcs_fabric_delete_comp(void *cbarg)
{
struct bfa_fcs_fabric_s *fabric = cbarg;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELCOMP);
}
static void
bfa_fcs_fabric_stop_comp(void *cbarg)
{
struct bfa_fcs_fabric_s *fabric = cbarg;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_STOPCOMP);
}
/*
* fcs_fabric_public fabric public functions
*/
/*
* Attach time initialization.
*/
void
bfa_fcs_fabric_attach(struct bfa_fcs_s *fcs)
{
struct bfa_fcs_fabric_s *fabric;
fabric = &fcs->fabric;
memset(fabric, 0, sizeof(struct bfa_fcs_fabric_s));
/*
* Initialize base fabric.
*/
fabric->fcs = fcs;
INIT_LIST_HEAD(&fabric->vport_q);
INIT_LIST_HEAD(&fabric->vf_q);
fabric->lps = bfa_lps_alloc(fcs->bfa);
WARN_ON(!fabric->lps);
/*
* Initialize fabric delete completion handler. Fabric deletion is
* complete when the last vport delete is complete.
*/
bfa_wc_init(&fabric->wc, bfa_fcs_fabric_delete_comp, fabric);
bfa_wc_up(&fabric->wc); /* For the base port */
bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
bfa_fcs_lport_attach(&fabric->bport, fabric->fcs, FC_VF_ID_NULL, NULL);
}
void
bfa_fcs_fabric_modinit(struct bfa_fcs_s *fcs)
{
bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_CREATE);
bfa_trc(fcs, 0);
}
/*
* Module cleanup
*/
void
bfa_fcs_fabric_modexit(struct bfa_fcs_s *fcs)
{
struct bfa_fcs_fabric_s *fabric;
bfa_trc(fcs, 0);
/*
* Cleanup base fabric.
*/
fabric = &fcs->fabric;
bfa_lps_delete(fabric->lps);
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELETE);
}
/*
* Fabric module stop -- stop FCS actions
*/
void
bfa_fcs_fabric_modstop(struct bfa_fcs_s *fcs)
{
struct bfa_fcs_fabric_s *fabric;
bfa_trc(fcs, 0);
fabric = &fcs->fabric;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_STOP);
}
/*
* Fabric module start -- kick starts FCS actions
*/
void
bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs)
{
struct bfa_fcs_fabric_s *fabric;
bfa_trc(fcs, 0);
fabric = &fcs->fabric;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_START);
}
/*
* Link up notification from BFA physical port module.
*/
void
bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s *fabric)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_UP);
}
/*
* Link down notification from BFA physical port module.
*/
void
bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
{
bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
}
/*
* A child vport is being created in the fabric.
*
* Call from vport module at vport creation. A list of base port and vports
* belonging to a fabric is maintained to propagate link events.
*
* param[in] fabric - Fabric instance. This can be a base fabric or vf.
* param[in] vport - Vport being created.
*
* @return None (always succeeds)
*/
void
bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s *fabric,
struct bfa_fcs_vport_s *vport)
{
/*
* - add vport to fabric's vport_q
*/
bfa_trc(fabric->fcs, fabric->vf_id);
list_add_tail(&vport->qe, &fabric->vport_q);
fabric->num_vports++;
bfa_wc_up(&fabric->wc);
}
/*
* A child vport is being deleted from fabric.
*
* Vport is being deleted.
*/
void
bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s *fabric,
struct bfa_fcs_vport_s *vport)
{
list_del(&vport->qe);
fabric->num_vports--;
bfa_wc_down(&fabric->wc);
}
/*
* Lookup for a vport within a fabric given its pwwn
*/
struct bfa_fcs_vport_s *
bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s *fabric, wwn_t pwwn)
{
struct bfa_fcs_vport_s *vport;
struct list_head *qe;
list_for_each(qe, &fabric->vport_q) {
vport = (struct bfa_fcs_vport_s *) qe;
if (bfa_fcs_lport_get_pwwn(&vport->lport) == pwwn)
return vport;
}
return NULL;
}
/*
* Get OUI of the attached switch.
*
* Note : Use of this function should be avoided as much as possible.
* This function should be used only if there is any requirement
* to check for FOS version below 6.3.
* To check if the attached fabric is a brocade fabric, use
* bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
* or above only.
*/
u16
bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric)
{
wwn_t fab_nwwn;
u8 *tmp;
u16 oui;
fab_nwwn = fabric->lps->pr_nwwn;
tmp = (u8 *)&fab_nwwn;
oui = (tmp[3] << 8) | tmp[4];
return oui;
}
/*
* Unsolicited frame receive handling.
*/
void
bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
u16 len)
{
u32 pid = fchs->d_id;
struct bfa_fcs_vport_s *vport;
struct list_head *qe;
struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
struct fc_logi_s *flogi = (struct fc_logi_s *) els_cmd;
bfa_trc(fabric->fcs, len);
bfa_trc(fabric->fcs, pid);
/*
* Look for our own FLOGI frames being looped back. This means an
* external loopback cable is in place. Our own FLOGI frames are
* sometimes looped back when switch port gets temporarily bypassed.
*/
if ((pid == bfa_ntoh3b(FC_FABRIC_PORT)) &&
(els_cmd->els_code == FC_ELS_FLOGI) &&
(flogi->port_name == bfa_fcs_lport_get_pwwn(&fabric->bport))) {
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOOPBACK);
return;
}
/*
* FLOGI/EVFP exchanges should be consumed by base fabric.
*/
if (fchs->d_id == bfa_hton3b(FC_FABRIC_PORT)) {
bfa_trc(fabric->fcs, pid);
bfa_fcs_fabric_process_uf(fabric, fchs, len);
return;
}
if (fabric->bport.pid == pid) {
/*
* All authentication frames should be routed to auth
*/
bfa_trc(fabric->fcs, els_cmd->els_code);
if (els_cmd->els_code == FC_ELS_AUTH) {
bfa_trc(fabric->fcs, els_cmd->els_code);
return;
}
bfa_trc(fabric->fcs, *(u8 *) ((u8 *) fchs));
bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
return;
}
/*
* look for a matching local port ID
*/
list_for_each(qe, &fabric->vport_q) {
vport = (struct bfa_fcs_vport_s *) qe;
if (vport->lport.pid == pid) {
bfa_fcs_lport_uf_recv(&vport->lport, fchs, len);
return;
}
}
if (!bfa_fcs_fabric_is_switched(fabric))
bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
bfa_trc(fabric->fcs, fchs->type);
}
/*
* Unsolicited frames to be processed by fabric.
*/
static void
bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
u16 len)
{
struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
bfa_trc(fabric->fcs, els_cmd->els_code);
switch (els_cmd->els_code) {
case FC_ELS_FLOGI:
bfa_fcs_fabric_process_flogi(fabric, fchs, len);
break;
default:
/*
* need to generate a LS_RJT
*/
break;
}
}
/*
* Process incoming FLOGI
*/
static void
bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
struct fchs_s *fchs, u16 len)
{
struct fc_logi_s *flogi = (struct fc_logi_s *) (fchs + 1);
struct bfa_fcs_lport_s *bport = &fabric->bport;
bfa_trc(fabric->fcs, fchs->s_id);
fabric->stats.flogi_rcvd++;
/*
* Check port type. It should be 0 = n-port.
*/
if (flogi->csp.port_type) {
/*
* @todo: may need to send a LS_RJT
*/
bfa_trc(fabric->fcs, flogi->port_name);
fabric->stats.flogi_rejected++;
return;
}
fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
bport->port_topo.pn2n.reply_oxid = fchs->ox_id;
/*
* Send a Flogi Acc
*/
bfa_fcs_fabric_send_flogi_acc(fabric);
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
}
static void
bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
{
struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
struct bfa_fcs_lport_n2n_s *n2n_port = &fabric->bport.port_topo.pn2n;
struct bfa_s *bfa = fabric->fcs->bfa;
struct bfa_fcxp_s *fcxp;
u16 reqlen;
struct fchs_s fchs;
fcxp = bfa_fcs_fcxp_alloc(fabric->fcs, BFA_FALSE);
/*
* Do not expect this failure -- expect remote node to retry
*/
if (!fcxp)
return;
reqlen = fc_flogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
bfa_hton3b(FC_FABRIC_PORT),
n2n_port->reply_oxid, pcfg->pwwn,
pcfg->nwwn,
bfa_fcport_get_maxfrsize(bfa),
bfa_fcport_get_rx_bbcredit(bfa), 0);
bfa_fcxp_send(fcxp, NULL, fabric->vf_id, fabric->lps->bfa_tag,
BFA_FALSE, FC_CLASS_3,
reqlen, &fchs, bfa_fcs_fabric_flogiacc_comp, fabric,
FC_MAX_PDUSZ, 0);
}
/*
* Flogi Acc completion callback.
*/
static void
bfa_fcs_fabric_flogiacc_comp(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
bfa_status_t status, u32 rsp_len,
u32 resid_len, struct fchs_s *rspfchs)
{
struct bfa_fcs_fabric_s *fabric = cbarg;
bfa_trc(fabric->fcs, status);
}
/*
* Send AEN notification
*/
static void
bfa_fcs_fabric_aen_post(struct bfa_fcs_lport_s *port,
enum bfa_port_aen_event event)
{
struct bfad_s *bfad = (struct bfad_s *)port->fabric->fcs->bfad;
struct bfa_aen_entry_s *aen_entry;
bfad_get_aen_entry(bfad, aen_entry);
if (!aen_entry)
return;
aen_entry->aen_data.port.pwwn = bfa_fcs_lport_get_pwwn(port);
aen_entry->aen_data.port.fwwn = bfa_fcs_lport_get_fabric_name(port);
/* Send the AEN notification */
bfad_im_post_vendor_event(aen_entry, bfad, ++port->fcs->fcs_aen_seq,
BFA_AEN_CAT_PORT, event);
}
/*
*
* @param[in] fabric - fabric
* @param[in] wwn_t - new fabric name
*
* @return - none
*/
void
bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
wwn_t fabric_name)
{
struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
char pwwn_ptr[BFA_STRING_32];
char fwwn_ptr[BFA_STRING_32];
bfa_trc(fabric->fcs, fabric_name);
if (fabric->fabric_name == 0) {
/*
* With BRCD switches, we don't get Fabric Name in FLOGI.
* Don't generate a fabric name change event in this case.
*/
fabric->fabric_name = fabric_name;
} else {
fabric->fabric_name = fabric_name;
wwn2str(pwwn_ptr, bfa_fcs_lport_get_pwwn(&fabric->bport));
wwn2str(fwwn_ptr,
bfa_fcs_lport_get_fabric_name(&fabric->bport));
BFA_LOG(KERN_WARNING, bfad, bfa_log_level,
"Base port WWN = %s Fabric WWN = %s\n",
pwwn_ptr, fwwn_ptr);
bfa_fcs_fabric_aen_post(&fabric->bport,
BFA_PORT_AEN_FABRIC_NAME_CHANGE);
}
}
void
bfa_cb_lps_flogo_comp(void *bfad, void *uarg)
{
struct bfa_fcs_fabric_s *fabric = uarg;
bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOGOCOMP);
}
/*
* Returns FCS vf structure for a given vf_id.
*
* param[in] vf_id - VF_ID
*
* return
* If lookup succeeds, retuns fcs vf object, otherwise returns NULL
*/
bfa_fcs_vf_t *
bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)
{
bfa_trc(fcs, vf_id);
if (vf_id == FC_VF_ID_NULL)
return &fcs->fabric;
return NULL;
}
/*
* Return the list of local logical ports present in the given VF.
*
* @param[in] vf vf for which logical ports are returned
* @param[out] lpwwn returned logical port wwn list
* @param[in,out] nlports in:size of lpwwn list;
* out:total elements present,
* actual elements returned is limited by the size
*/
void
bfa_fcs_vf_get_ports(bfa_fcs_vf_t *vf, wwn_t lpwwn[], int *nlports)
{
struct list_head *qe;
struct bfa_fcs_vport_s *vport;
int i = 0;
struct bfa_fcs_s *fcs;
if (vf == NULL || lpwwn == NULL || *nlports == 0)
return;
fcs = vf->fcs;
bfa_trc(fcs, vf->vf_id);
bfa_trc(fcs, (uint32_t) *nlports);
lpwwn[i++] = vf->bport.port_cfg.pwwn;
list_for_each(qe, &vf->vport_q) {
if (i >= *nlports)
break;
vport = (struct bfa_fcs_vport_s *) qe;
lpwwn[i++] = vport->lport.port_cfg.pwwn;
}
bfa_trc(fcs, i);
*nlports = i;
}
/*
* BFA FCS PPORT ( physical port)
*/
static void
bfa_fcs_port_event_handler(void *cbarg, enum bfa_port_linkstate event)
{
struct bfa_fcs_s *fcs = cbarg;
bfa_trc(fcs, event);
switch (event) {
case BFA_PORT_LINKUP:
bfa_fcs_fabric_link_up(&fcs->fabric);
break;
case BFA_PORT_LINKDOWN:
bfa_fcs_fabric_link_down(&fcs->fabric);
break;
default:
WARN_ON(1);
}
}
void
bfa_fcs_port_attach(struct bfa_fcs_s *fcs)
{
bfa_fcport_event_register(fcs->bfa, bfa_fcs_port_event_handler, fcs);
}
/*
* BFA FCS UF ( Unsolicited Frames)
*/
/*
* BFA callback for unsolicited frame receive handler.
*
* @param[in] cbarg callback arg for receive handler
* @param[in] uf unsolicited frame descriptor
*
* @return None
*/
static void
bfa_fcs_uf_recv(void *cbarg, struct bfa_uf_s *uf)
{
struct bfa_fcs_s *fcs = (struct bfa_fcs_s *) cbarg;
struct fchs_s *fchs = bfa_uf_get_frmbuf(uf);
u16 len = bfa_uf_get_frmlen(uf);
struct fc_vft_s *vft;
struct bfa_fcs_fabric_s *fabric;
/*
* check for VFT header
*/
if (fchs->routing == FC_RTG_EXT_HDR &&
fchs->cat_info == FC_CAT_VFT_HDR) {
bfa_stats(fcs, uf.tagged);
vft = bfa_uf_get_frmbuf(uf);
if (fcs->port_vfid == vft->vf_id)
fabric = &fcs->fabric;
else
fabric = bfa_fcs_vf_lookup(fcs, (u16) vft->vf_id);
/*
* drop frame if vfid is unknown
*/
if (!fabric) {
WARN_ON(1);
bfa_stats(fcs, uf.vfid_unknown);
bfa_uf_free(uf);
return;
}
/*
* skip vft header
*/
fchs = (struct fchs_s *) (vft + 1);
len -= sizeof(struct fc_vft_s);
bfa_trc(fcs, vft->vf_id);
} else {
bfa_stats(fcs, uf.untagged);
fabric = &fcs->fabric;
}
bfa_trc(fcs, ((u32 *) fchs)[0]);
bfa_trc(fcs, ((u32 *) fchs)[1]);
bfa_trc(fcs, ((u32 *) fchs)[2]);
bfa_trc(fcs, ((u32 *) fchs)[3]);
bfa_trc(fcs, ((u32 *) fchs)[4]);
bfa_trc(fcs, ((u32 *) fchs)[5]);
bfa_trc(fcs, len);
bfa_fcs_fabric_uf_recv(fabric, fchs, len);
bfa_uf_free(uf);
}
void
bfa_fcs_uf_attach(struct bfa_fcs_s *fcs)
{
bfa_uf_recv_register(fcs->bfa, bfa_fcs_uf_recv, fcs);
}
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