+++ /dev/null
-/*
- * Copyright (c) 2005-2009 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.
- */
-
-#include <bfa.h>
-#include <bfa_svc.h>
-#include "fcs_lport.h"
-#include "fcs_rport.h"
-#include "fcs_ms.h"
-#include "fcs_trcmod.h"
-#include "fcs_fcxp.h"
-#include "fcs.h"
-#include "lport_priv.h"
-
-BFA_TRC_FILE(FCS, SCN);
-
-#define FC_QOS_RSCN_EVENT 0x0c
-#define FC_FABRIC_NAME_RSCN_EVENT 0x0d
-
-/*
- * forward declarations
- */
-static void bfa_fcs_port_scn_send_scr(void *scn_cbarg,
- struct bfa_fcxp_s *fcxp_alloced);
-static void bfa_fcs_port_scn_scr_response(void *fcsarg,
- struct bfa_fcxp_s *fcxp,
- void *cbarg,
- bfa_status_t req_status,
- u32 rsp_len,
- u32 resid_len,
- struct fchs_s *rsp_fchs);
-static void bfa_fcs_port_scn_send_ls_acc(struct bfa_fcs_port_s *port,
- struct fchs_s *rx_fchs);
-static void bfa_fcs_port_scn_timeout(void *arg);
-
-/**
- * fcs_scm_sm FCS SCN state machine
- */
-
-/**
- * VPort SCN State Machine events
- */
-enum port_scn_event {
- SCNSM_EVENT_PORT_ONLINE = 1,
- SCNSM_EVENT_PORT_OFFLINE = 2,
- SCNSM_EVENT_RSP_OK = 3,
- SCNSM_EVENT_RSP_ERROR = 4,
- SCNSM_EVENT_TIMEOUT = 5,
- SCNSM_EVENT_SCR_SENT = 6,
-};
-
-static void bfa_fcs_port_scn_sm_offline(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event);
-static void bfa_fcs_port_scn_sm_sending_scr(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event);
-static void bfa_fcs_port_scn_sm_scr(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event);
-static void bfa_fcs_port_scn_sm_scr_retry(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event);
-static void bfa_fcs_port_scn_sm_online(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event);
-
-/**
- * Starting state - awaiting link up.
- */
-static void
-bfa_fcs_port_scn_sm_offline(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event)
-{
- switch (event) {
- case SCNSM_EVENT_PORT_ONLINE:
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_sending_scr);
- bfa_fcs_port_scn_send_scr(scn, NULL);
- break;
-
- case SCNSM_EVENT_PORT_OFFLINE:
- break;
-
- default:
- bfa_sm_fault(scn->port->fcs, event);
- }
-}
-
-static void
-bfa_fcs_port_scn_sm_sending_scr(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event)
-{
- switch (event) {
- case SCNSM_EVENT_SCR_SENT:
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_scr);
- break;
-
- case SCNSM_EVENT_PORT_OFFLINE:
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_offline);
- bfa_fcxp_walloc_cancel(scn->port->fcs->bfa, &scn->fcxp_wqe);
- break;
-
- default:
- bfa_sm_fault(scn->port->fcs, event);
- }
-}
-
-static void
-bfa_fcs_port_scn_sm_scr(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event)
-{
- struct bfa_fcs_port_s *port = scn->port;
-
- switch (event) {
- case SCNSM_EVENT_RSP_OK:
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_online);
- break;
-
- case SCNSM_EVENT_RSP_ERROR:
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_scr_retry);
- bfa_timer_start(port->fcs->bfa, &scn->timer,
- bfa_fcs_port_scn_timeout, scn,
- BFA_FCS_RETRY_TIMEOUT);
- break;
-
- case SCNSM_EVENT_PORT_OFFLINE:
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_offline);
- bfa_fcxp_discard(scn->fcxp);
- break;
-
- default:
- bfa_sm_fault(scn->port->fcs, event);
- }
-}
-
-static void
-bfa_fcs_port_scn_sm_scr_retry(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event)
-{
- switch (event) {
- case SCNSM_EVENT_TIMEOUT:
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_sending_scr);
- bfa_fcs_port_scn_send_scr(scn, NULL);
- break;
-
- case SCNSM_EVENT_PORT_OFFLINE:
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_offline);
- bfa_timer_stop(&scn->timer);
- break;
-
- default:
- bfa_sm_fault(scn->port->fcs, event);
- }
-}
-
-static void
-bfa_fcs_port_scn_sm_online(struct bfa_fcs_port_scn_s *scn,
- enum port_scn_event event)
-{
- switch (event) {
- case SCNSM_EVENT_PORT_OFFLINE:
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_offline);
- break;
-
- default:
- bfa_sm_fault(scn->port->fcs, event);
- }
-}
-
-
-
-/**
- * fcs_scn_private FCS SCN private functions
- */
-
-/**
- * This routine will be called to send a SCR command.
- */
-static void
-bfa_fcs_port_scn_send_scr(void *scn_cbarg, struct bfa_fcxp_s *fcxp_alloced)
-{
- struct bfa_fcs_port_scn_s *scn = scn_cbarg;
- struct bfa_fcs_port_s *port = scn->port;
- struct fchs_s fchs;
- int len;
- struct bfa_fcxp_s *fcxp;
-
- bfa_trc(port->fcs, port->pid);
- bfa_trc(port->fcs, port->port_cfg.pwwn);
-
- fcxp = fcxp_alloced ? fcxp_alloced : bfa_fcs_fcxp_alloc(port->fcs);
- if (!fcxp) {
- bfa_fcxp_alloc_wait(port->fcs->bfa, &scn->fcxp_wqe,
- bfa_fcs_port_scn_send_scr, scn);
- return;
- }
- scn->fcxp = fcxp;
-
- /*
- * Handle VU registrations for Base port only
- */
- if ((!port->vport) && bfa_ioc_get_fcmode(&port->fcs->bfa->ioc)) {
- len = fc_scr_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
- bfa_lps_is_brcd_fabric(port->fabric->lps),
- port->pid, 0);
- } else {
- len = fc_scr_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), BFA_FALSE,
- port->pid, 0);
- }
-
- bfa_fcxp_send(fcxp, NULL, port->fabric->vf_id, port->lp_tag, BFA_FALSE,
- FC_CLASS_3, len, &fchs, bfa_fcs_port_scn_scr_response,
- (void *)scn, FC_MAX_PDUSZ, FC_ELS_TOV);
-
- bfa_sm_send_event(scn, SCNSM_EVENT_SCR_SENT);
-}
-
-static void
-bfa_fcs_port_scn_scr_response(void *fcsarg, struct bfa_fcxp_s *fcxp,
- void *cbarg, bfa_status_t req_status,
- u32 rsp_len, u32 resid_len,
- struct fchs_s *rsp_fchs)
-{
- struct bfa_fcs_port_scn_s *scn = (struct bfa_fcs_port_scn_s *)cbarg;
- struct bfa_fcs_port_s *port = scn->port;
- struct fc_els_cmd_s *els_cmd;
- struct fc_ls_rjt_s *ls_rjt;
-
- bfa_trc(port->fcs, port->port_cfg.pwwn);
-
- /*
- * Sanity Checks
- */
- if (req_status != BFA_STATUS_OK) {
- bfa_trc(port->fcs, req_status);
- bfa_sm_send_event(scn, SCNSM_EVENT_RSP_ERROR);
- return;
- }
-
- els_cmd = (struct fc_els_cmd_s *) BFA_FCXP_RSP_PLD(fcxp);
-
- switch (els_cmd->els_code) {
-
- case FC_ELS_ACC:
- bfa_sm_send_event(scn, SCNSM_EVENT_RSP_OK);
- break;
-
- case FC_ELS_LS_RJT:
-
- ls_rjt = (struct fc_ls_rjt_s *) BFA_FCXP_RSP_PLD(fcxp);
-
- bfa_trc(port->fcs, ls_rjt->reason_code);
- bfa_trc(port->fcs, ls_rjt->reason_code_expl);
-
- bfa_sm_send_event(scn, SCNSM_EVENT_RSP_ERROR);
- break;
-
- default:
- bfa_sm_send_event(scn, SCNSM_EVENT_RSP_ERROR);
- }
-}
-
-/*
- * Send a LS Accept
- */
-static void
-bfa_fcs_port_scn_send_ls_acc(struct bfa_fcs_port_s *port,
- struct fchs_s *rx_fchs)
-{
- struct fchs_s fchs;
- struct bfa_fcxp_s *fcxp;
- struct bfa_rport_s *bfa_rport = NULL;
- int len;
-
- bfa_trc(port->fcs, rx_fchs->s_id);
-
- fcxp = bfa_fcs_fcxp_alloc(port->fcs);
- if (!fcxp)
- return;
-
- len = fc_ls_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), rx_fchs->s_id,
- bfa_fcs_port_get_fcid(port), rx_fchs->ox_id);
-
- bfa_fcxp_send(fcxp, bfa_rport, port->fabric->vf_id, port->lp_tag,
- BFA_FALSE, FC_CLASS_3, len, &fchs, NULL, NULL,
- FC_MAX_PDUSZ, 0);
-}
-
-/**
- * This routine will be called by bfa_timer on timer timeouts.
- *
- * param[in] vport - pointer to bfa_fcs_port_t.
- * param[out] vport_status - pointer to return vport status in
- *
- * return
- * void
- *
-* Special Considerations:
- *
- * note
- */
-static void
-bfa_fcs_port_scn_timeout(void *arg)
-{
- struct bfa_fcs_port_scn_s *scn = (struct bfa_fcs_port_scn_s *)arg;
-
- bfa_sm_send_event(scn, SCNSM_EVENT_TIMEOUT);
-}
-
-
-
-/**
- * fcs_scn_public FCS state change notification public interfaces
- */
-
-/*
- * Functions called by port/fab
- */
-void
-bfa_fcs_port_scn_init(struct bfa_fcs_port_s *port)
-{
- struct bfa_fcs_port_scn_s *scn = BFA_FCS_GET_SCN_FROM_PORT(port);
-
- scn->port = port;
- bfa_sm_set_state(scn, bfa_fcs_port_scn_sm_offline);
-}
-
-void
-bfa_fcs_port_scn_offline(struct bfa_fcs_port_s *port)
-{
- struct bfa_fcs_port_scn_s *scn = BFA_FCS_GET_SCN_FROM_PORT(port);
-
- scn->port = port;
- bfa_sm_send_event(scn, SCNSM_EVENT_PORT_OFFLINE);
-}
-
-void
-bfa_fcs_port_scn_online(struct bfa_fcs_port_s *port)
-{
- struct bfa_fcs_port_scn_s *scn = BFA_FCS_GET_SCN_FROM_PORT(port);
-
- scn->port = port;
- bfa_sm_send_event(scn, SCNSM_EVENT_PORT_ONLINE);
-}
-
-static void
-bfa_fcs_port_scn_portid_rscn(struct bfa_fcs_port_s *port, u32 rpid)
-{
- struct bfa_fcs_rport_s *rport;
-
- bfa_trc(port->fcs, rpid);
-
- /**
- * If this is an unknown device, then it just came online.
- * Otherwise let rport handle the RSCN event.
- */
- rport = bfa_fcs_port_get_rport_by_pid(port, rpid);
- if (rport == NULL) {
- /*
- * If min cfg mode is enabled, we donot need to
- * discover any new rports.
- */
- if (!__fcs_min_cfg(port->fcs))
- rport = bfa_fcs_rport_create(port, rpid);
- } else {
- bfa_fcs_rport_scn(rport);
- }
-}
-
-/**
- * rscn format based PID comparison
- */
-#define __fc_pid_match(__c0, __c1, __fmt) \
- (((__fmt) == FC_RSCN_FORMAT_FABRIC) || \
- (((__fmt) == FC_RSCN_FORMAT_DOMAIN) && \
- ((__c0)[0] == (__c1)[0])) || \
- (((__fmt) == FC_RSCN_FORMAT_AREA) && \
- ((__c0)[0] == (__c1)[0]) && \
- ((__c0)[1] == (__c1)[1])))
-
-static void
-bfa_fcs_port_scn_multiport_rscn(struct bfa_fcs_port_s *port,
- enum fc_rscn_format format, u32 rscn_pid)
-{
- struct bfa_fcs_rport_s *rport;
- struct list_head *qe, *qe_next;
- u8 *c0, *c1;
-
- bfa_trc(port->fcs, format);
- bfa_trc(port->fcs, rscn_pid);
-
- c0 = (u8 *) &rscn_pid;
-
- list_for_each_safe(qe, qe_next, &port->rport_q) {
- rport = (struct bfa_fcs_rport_s *)qe;
- c1 = (u8 *) &rport->pid;
- if (__fc_pid_match(c0, c1, format))
- bfa_fcs_rport_scn(rport);
- }
-}
-
-void
-bfa_fcs_port_scn_process_rscn(struct bfa_fcs_port_s *port, struct fchs_s *fchs,
- u32 len)
-{
- struct fc_rscn_pl_s *rscn = (struct fc_rscn_pl_s *) (fchs + 1);
- int num_entries;
- u32 rscn_pid;
- bfa_boolean_t nsquery = BFA_FALSE;
- int i = 0;
-
- num_entries =
- (bfa_os_ntohs(rscn->payldlen) -
- sizeof(u32)) / sizeof(rscn->event[0]);
-
- bfa_trc(port->fcs, num_entries);
-
- port->stats.num_rscn++;
-
- bfa_fcs_port_scn_send_ls_acc(port, fchs);
-
- for (i = 0; i < num_entries; i++) {
- rscn_pid = rscn->event[i].portid;
-
- bfa_trc(port->fcs, rscn->event[i].format);
- bfa_trc(port->fcs, rscn_pid);
-
- switch (rscn->event[i].format) {
- case FC_RSCN_FORMAT_PORTID:
- if (rscn->event[i].qualifier == FC_QOS_RSCN_EVENT) {
- /*
- * Ignore this event. f/w would have processed
- * it
- */
- bfa_trc(port->fcs, rscn_pid);
- } else {
- port->stats.num_portid_rscn++;
- bfa_fcs_port_scn_portid_rscn(port, rscn_pid);
- }
- break;
-
- case FC_RSCN_FORMAT_FABRIC:
- if (rscn->event[i].qualifier ==
- FC_FABRIC_NAME_RSCN_EVENT) {
- bfa_fcs_port_ms_fabric_rscn(port);
- break;
- }
- /*
- * !!!!!!!!! Fall Through !!!!!!!!!!!!!
- */
-
- case FC_RSCN_FORMAT_AREA:
- case FC_RSCN_FORMAT_DOMAIN:
- nsquery = BFA_TRUE;
- bfa_fcs_port_scn_multiport_rscn(port,
- rscn->event[i].format,
- rscn_pid);
- break;
-
- default:
- bfa_assert(0);
- nsquery = BFA_TRUE;
- }
- }
-
- /**
- * If any of area, domain or fabric RSCN is received, do a fresh discovery
- * to find new devices.
- */
- if (nsquery)
- bfa_fcs_port_ns_query(port);
-}
-
-
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