851 lines
22 KiB
C
851 lines
22 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
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* Copyright (c) 2014- QLogic Corporation.
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* All rights reserved
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* www.qlogic.com
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*
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* Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
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*/
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/*
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* fcpim.c - FCP initiator mode i-t nexus state machine
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*/
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#include "bfad_drv.h"
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#include "bfa_fcs.h"
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#include "bfa_fcbuild.h"
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#include "bfad_im.h"
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#include "bfa_fcpim.h"
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BFA_TRC_FILE(FCS, FCPIM);
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/*
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* forward declarations
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*/
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static void bfa_fcs_itnim_timeout(void *arg);
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static void bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim);
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static void bfa_fcs_itnim_send_prli(void *itnim_cbarg,
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struct bfa_fcxp_s *fcxp_alloced);
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static void bfa_fcs_itnim_prli_response(void *fcsarg,
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struct bfa_fcxp_s *fcxp, void *cbarg,
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bfa_status_t req_status, u32 rsp_len,
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u32 resid_len, struct fchs_s *rsp_fchs);
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static void bfa_fcs_itnim_aen_post(struct bfa_fcs_itnim_s *itnim,
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enum bfa_itnim_aen_event event);
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static void bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event);
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static void bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event);
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static void bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event);
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static void bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event);
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static void bfa_fcs_itnim_sm_hcb_online(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event);
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static void bfa_fcs_itnim_sm_hal_rport_online(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event);
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static void bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event);
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static void bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event);
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static void bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event);
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struct bfa_fcs_itnim_sm_table_s {
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bfa_fcs_itnim_sm_t sm; /* state machine function */
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enum bfa_itnim_state state; /* state machine encoding */
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char *name; /* state name for display */
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};
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static inline enum bfa_itnim_state
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bfa_fcs_itnim_sm_to_state(struct bfa_fcs_itnim_sm_table_s *smt, bfa_fcs_itnim_sm_t sm)
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{
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int i = 0;
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while (smt[i].sm && smt[i].sm != sm)
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i++;
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return smt[i].state;
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}
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static struct bfa_fcs_itnim_sm_table_s itnim_sm_table[] = {
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{BFA_SM(bfa_fcs_itnim_sm_offline), BFA_ITNIM_OFFLINE},
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{BFA_SM(bfa_fcs_itnim_sm_prli_send), BFA_ITNIM_PRLI_SEND},
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{BFA_SM(bfa_fcs_itnim_sm_prli), BFA_ITNIM_PRLI_SENT},
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{BFA_SM(bfa_fcs_itnim_sm_prli_retry), BFA_ITNIM_PRLI_RETRY},
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{BFA_SM(bfa_fcs_itnim_sm_hcb_online), BFA_ITNIM_HCB_ONLINE},
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{BFA_SM(bfa_fcs_itnim_sm_online), BFA_ITNIM_ONLINE},
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{BFA_SM(bfa_fcs_itnim_sm_hcb_offline), BFA_ITNIM_HCB_OFFLINE},
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{BFA_SM(bfa_fcs_itnim_sm_initiator), BFA_ITNIM_INITIATIOR},
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};
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/*
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* fcs_itnim_sm FCS itnim state machine
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*/
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static void
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bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event)
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{
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bfa_trc(itnim->fcs, itnim->rport->pwwn);
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bfa_trc(itnim->fcs, event);
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switch (event) {
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case BFA_FCS_ITNIM_SM_FCS_ONLINE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send);
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itnim->prli_retries = 0;
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bfa_fcs_itnim_send_prli(itnim, NULL);
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break;
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case BFA_FCS_ITNIM_SM_OFFLINE:
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);
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break;
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case BFA_FCS_ITNIM_SM_INITIATOR:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
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break;
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case BFA_FCS_ITNIM_SM_DELETE:
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bfa_fcs_itnim_free(itnim);
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break;
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default:
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bfa_sm_fault(itnim->fcs, event);
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}
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}
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static void
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bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event)
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{
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bfa_trc(itnim->fcs, itnim->rport->pwwn);
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bfa_trc(itnim->fcs, event);
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switch (event) {
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case BFA_FCS_ITNIM_SM_FRMSENT:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli);
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break;
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case BFA_FCS_ITNIM_SM_INITIATOR:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
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bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);
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break;
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case BFA_FCS_ITNIM_SM_OFFLINE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);
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break;
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case BFA_FCS_ITNIM_SM_DELETE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);
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bfa_fcs_itnim_free(itnim);
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break;
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default:
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bfa_sm_fault(itnim->fcs, event);
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}
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}
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static void
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bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event)
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{
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bfa_trc(itnim->fcs, itnim->rport->pwwn);
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bfa_trc(itnim->fcs, event);
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switch (event) {
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case BFA_FCS_ITNIM_SM_RSP_OK:
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if (itnim->rport->scsi_function == BFA_RPORT_INITIATOR)
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
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else
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bfa_sm_set_state(itnim,
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bfa_fcs_itnim_sm_hal_rport_online);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);
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break;
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case BFA_FCS_ITNIM_SM_RSP_ERROR:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_retry);
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bfa_timer_start(itnim->fcs->bfa, &itnim->timer,
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bfa_fcs_itnim_timeout, itnim,
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BFA_FCS_RETRY_TIMEOUT);
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break;
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case BFA_FCS_ITNIM_SM_RSP_NOT_SUPP:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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break;
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case BFA_FCS_ITNIM_SM_OFFLINE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_fcxp_discard(itnim->fcxp);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);
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break;
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case BFA_FCS_ITNIM_SM_INITIATOR:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
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bfa_fcxp_discard(itnim->fcxp);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);
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break;
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case BFA_FCS_ITNIM_SM_DELETE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_fcxp_discard(itnim->fcxp);
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bfa_fcs_itnim_free(itnim);
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break;
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default:
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bfa_sm_fault(itnim->fcs, event);
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}
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}
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static void
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bfa_fcs_itnim_sm_hal_rport_online(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event)
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{
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bfa_trc(itnim->fcs, itnim->rport->pwwn);
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bfa_trc(itnim->fcs, event);
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switch (event) {
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case BFA_FCS_ITNIM_SM_HAL_ONLINE:
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if (!itnim->bfa_itnim)
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itnim->bfa_itnim = bfa_itnim_create(itnim->fcs->bfa,
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itnim->rport->bfa_rport, itnim);
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if (itnim->bfa_itnim) {
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_online);
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bfa_itnim_online(itnim->bfa_itnim, itnim->seq_rec);
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} else {
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_DELETE);
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}
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break;
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case BFA_FCS_ITNIM_SM_OFFLINE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);
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break;
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case BFA_FCS_ITNIM_SM_DELETE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_fcs_itnim_free(itnim);
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break;
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default:
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bfa_sm_fault(itnim->fcs, event);
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}
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}
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static void
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bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event)
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{
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bfa_trc(itnim->fcs, itnim->rport->pwwn);
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bfa_trc(itnim->fcs, event);
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switch (event) {
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case BFA_FCS_ITNIM_SM_TIMEOUT:
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if (itnim->prli_retries < BFA_FCS_RPORT_MAX_RETRIES) {
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itnim->prli_retries++;
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bfa_trc(itnim->fcs, itnim->prli_retries);
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send);
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bfa_fcs_itnim_send_prli(itnim, NULL);
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} else {
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/* invoke target offline */
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_LOGO_IMP);
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}
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break;
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case BFA_FCS_ITNIM_SM_OFFLINE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_timer_stop(&itnim->timer);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);
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break;
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case BFA_FCS_ITNIM_SM_INITIATOR:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
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bfa_timer_stop(&itnim->timer);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);
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break;
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case BFA_FCS_ITNIM_SM_DELETE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_timer_stop(&itnim->timer);
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bfa_fcs_itnim_free(itnim);
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break;
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default:
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bfa_sm_fault(itnim->fcs, event);
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}
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}
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static void
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bfa_fcs_itnim_sm_hcb_online(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event)
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{
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struct bfad_s *bfad = (struct bfad_s *)itnim->fcs->bfad;
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char lpwwn_buf[BFA_STRING_32];
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char rpwwn_buf[BFA_STRING_32];
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bfa_trc(itnim->fcs, itnim->rport->pwwn);
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bfa_trc(itnim->fcs, event);
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switch (event) {
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case BFA_FCS_ITNIM_SM_HCB_ONLINE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_online);
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bfa_fcb_itnim_online(itnim->itnim_drv);
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wwn2str(lpwwn_buf, bfa_fcs_lport_get_pwwn(itnim->rport->port));
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wwn2str(rpwwn_buf, itnim->rport->pwwn);
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BFA_LOG(KERN_INFO, bfad, bfa_log_level,
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"Target (WWN = %s) is online for initiator (WWN = %s)\n",
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rpwwn_buf, lpwwn_buf);
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bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_ONLINE);
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break;
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case BFA_FCS_ITNIM_SM_OFFLINE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_offline);
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bfa_itnim_offline(itnim->bfa_itnim);
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break;
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case BFA_FCS_ITNIM_SM_DELETE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_fcs_itnim_free(itnim);
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break;
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default:
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bfa_sm_fault(itnim->fcs, event);
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}
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}
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static void
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bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event)
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{
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struct bfad_s *bfad = (struct bfad_s *)itnim->fcs->bfad;
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char lpwwn_buf[BFA_STRING_32];
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char rpwwn_buf[BFA_STRING_32];
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bfa_trc(itnim->fcs, itnim->rport->pwwn);
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bfa_trc(itnim->fcs, event);
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switch (event) {
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case BFA_FCS_ITNIM_SM_OFFLINE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_offline);
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bfa_fcb_itnim_offline(itnim->itnim_drv);
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bfa_itnim_offline(itnim->bfa_itnim);
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wwn2str(lpwwn_buf, bfa_fcs_lport_get_pwwn(itnim->rport->port));
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wwn2str(rpwwn_buf, itnim->rport->pwwn);
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if (bfa_fcs_lport_is_online(itnim->rport->port) == BFA_TRUE) {
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BFA_LOG(KERN_ERR, bfad, bfa_log_level,
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"Target (WWN = %s) connectivity lost for "
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"initiator (WWN = %s)\n", rpwwn_buf, lpwwn_buf);
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bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_DISCONNECT);
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} else {
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BFA_LOG(KERN_INFO, bfad, bfa_log_level,
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"Target (WWN = %s) offlined by initiator (WWN = %s)\n",
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rpwwn_buf, lpwwn_buf);
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bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_OFFLINE);
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}
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break;
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case BFA_FCS_ITNIM_SM_DELETE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_fcs_itnim_free(itnim);
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break;
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default:
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bfa_sm_fault(itnim->fcs, event);
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}
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}
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static void
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bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim,
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enum bfa_fcs_itnim_event event)
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{
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bfa_trc(itnim->fcs, itnim->rport->pwwn);
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bfa_trc(itnim->fcs, event);
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switch (event) {
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case BFA_FCS_ITNIM_SM_HCB_OFFLINE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);
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break;
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case BFA_FCS_ITNIM_SM_DELETE:
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bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
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bfa_fcs_itnim_free(itnim);
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break;
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default:
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bfa_sm_fault(itnim->fcs, event);
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}
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}
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/*
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* This state is set when a discovered rport is also in intiator mode.
|
|
* This ITN is marked as no_op and is not active and will not be truned into
|
|
* online state.
|
|
*/
|
|
static void
|
|
bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim,
|
|
enum bfa_fcs_itnim_event event)
|
|
{
|
|
bfa_trc(itnim->fcs, itnim->rport->pwwn);
|
|
bfa_trc(itnim->fcs, event);
|
|
|
|
switch (event) {
|
|
case BFA_FCS_ITNIM_SM_OFFLINE:
|
|
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
|
|
bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE);
|
|
break;
|
|
|
|
/*
|
|
* fcs_online is expected here for well known initiator ports
|
|
*/
|
|
case BFA_FCS_ITNIM_SM_FCS_ONLINE:
|
|
bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_FCS_ONLINE);
|
|
break;
|
|
|
|
case BFA_FCS_ITNIM_SM_RSP_ERROR:
|
|
case BFA_FCS_ITNIM_SM_INITIATOR:
|
|
break;
|
|
|
|
case BFA_FCS_ITNIM_SM_DELETE:
|
|
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
|
|
bfa_fcs_itnim_free(itnim);
|
|
break;
|
|
|
|
default:
|
|
bfa_sm_fault(itnim->fcs, event);
|
|
}
|
|
}
|
|
|
|
static void
|
|
bfa_fcs_itnim_aen_post(struct bfa_fcs_itnim_s *itnim,
|
|
enum bfa_itnim_aen_event event)
|
|
{
|
|
struct bfa_fcs_rport_s *rport = itnim->rport;
|
|
struct bfad_s *bfad = (struct bfad_s *)itnim->fcs->bfad;
|
|
struct bfa_aen_entry_s *aen_entry;
|
|
|
|
/* Don't post events for well known addresses */
|
|
if (BFA_FCS_PID_IS_WKA(rport->pid))
|
|
return;
|
|
|
|
bfad_get_aen_entry(bfad, aen_entry);
|
|
if (!aen_entry)
|
|
return;
|
|
|
|
aen_entry->aen_data.itnim.vf_id = rport->port->fabric->vf_id;
|
|
aen_entry->aen_data.itnim.ppwwn = bfa_fcs_lport_get_pwwn(
|
|
bfa_fcs_get_base_port(itnim->fcs));
|
|
aen_entry->aen_data.itnim.lpwwn = bfa_fcs_lport_get_pwwn(rport->port);
|
|
aen_entry->aen_data.itnim.rpwwn = rport->pwwn;
|
|
|
|
/* Send the AEN notification */
|
|
bfad_im_post_vendor_event(aen_entry, bfad, ++rport->fcs->fcs_aen_seq,
|
|
BFA_AEN_CAT_ITNIM, event);
|
|
}
|
|
|
|
static void
|
|
bfa_fcs_itnim_send_prli(void *itnim_cbarg, struct bfa_fcxp_s *fcxp_alloced)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = itnim_cbarg;
|
|
struct bfa_fcs_rport_s *rport = itnim->rport;
|
|
struct bfa_fcs_lport_s *port = rport->port;
|
|
struct fchs_s fchs;
|
|
struct bfa_fcxp_s *fcxp;
|
|
int len;
|
|
|
|
bfa_trc(itnim->fcs, itnim->rport->pwwn);
|
|
|
|
fcxp = fcxp_alloced ? fcxp_alloced :
|
|
bfa_fcs_fcxp_alloc(port->fcs, BFA_TRUE);
|
|
if (!fcxp) {
|
|
itnim->stats.fcxp_alloc_wait++;
|
|
bfa_fcs_fcxp_alloc_wait(port->fcs->bfa, &itnim->fcxp_wqe,
|
|
bfa_fcs_itnim_send_prli, itnim, BFA_TRUE);
|
|
return;
|
|
}
|
|
itnim->fcxp = fcxp;
|
|
|
|
len = fc_prli_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
|
|
itnim->rport->pid, bfa_fcs_lport_get_fcid(port), 0);
|
|
|
|
bfa_fcxp_send(fcxp, rport->bfa_rport, port->fabric->vf_id, port->lp_tag,
|
|
BFA_FALSE, FC_CLASS_3, len, &fchs,
|
|
bfa_fcs_itnim_prli_response, (void *)itnim,
|
|
FC_MAX_PDUSZ, FC_ELS_TOV);
|
|
|
|
itnim->stats.prli_sent++;
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_FRMSENT);
|
|
}
|
|
|
|
static void
|
|
bfa_fcs_itnim_prli_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_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cbarg;
|
|
struct fc_els_cmd_s *els_cmd;
|
|
struct fc_prli_s *prli_resp;
|
|
struct fc_ls_rjt_s *ls_rjt;
|
|
struct fc_prli_params_s *sparams;
|
|
|
|
bfa_trc(itnim->fcs, req_status);
|
|
|
|
/*
|
|
* Sanity Checks
|
|
*/
|
|
if (req_status != BFA_STATUS_OK) {
|
|
itnim->stats.prli_rsp_err++;
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR);
|
|
return;
|
|
}
|
|
|
|
els_cmd = (struct fc_els_cmd_s *) BFA_FCXP_RSP_PLD(fcxp);
|
|
|
|
if (els_cmd->els_code == FC_ELS_ACC) {
|
|
prli_resp = (struct fc_prli_s *) els_cmd;
|
|
|
|
if (fc_prli_rsp_parse(prli_resp, rsp_len) != FC_PARSE_OK) {
|
|
bfa_trc(itnim->fcs, rsp_len);
|
|
/*
|
|
* Check if this r-port is also in Initiator mode.
|
|
* If so, we need to set this ITN as a no-op.
|
|
*/
|
|
if (prli_resp->parampage.servparams.initiator) {
|
|
bfa_trc(itnim->fcs, prli_resp->parampage.type);
|
|
itnim->rport->scsi_function =
|
|
BFA_RPORT_INITIATOR;
|
|
itnim->stats.prli_rsp_acc++;
|
|
itnim->stats.initiator++;
|
|
bfa_sm_send_event(itnim,
|
|
BFA_FCS_ITNIM_SM_RSP_OK);
|
|
return;
|
|
}
|
|
|
|
itnim->stats.prli_rsp_parse_err++;
|
|
return;
|
|
}
|
|
itnim->rport->scsi_function = BFA_RPORT_TARGET;
|
|
|
|
sparams = &prli_resp->parampage.servparams;
|
|
itnim->seq_rec = sparams->retry;
|
|
itnim->rec_support = sparams->rec_support;
|
|
itnim->task_retry_id = sparams->task_retry_id;
|
|
itnim->conf_comp = sparams->confirm;
|
|
|
|
itnim->stats.prli_rsp_acc++;
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_OK);
|
|
} else {
|
|
ls_rjt = (struct fc_ls_rjt_s *) BFA_FCXP_RSP_PLD(fcxp);
|
|
|
|
bfa_trc(itnim->fcs, ls_rjt->reason_code);
|
|
bfa_trc(itnim->fcs, ls_rjt->reason_code_expl);
|
|
|
|
itnim->stats.prli_rsp_rjt++;
|
|
if (ls_rjt->reason_code == FC_LS_RJT_RSN_CMD_NOT_SUPP) {
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_NOT_SUPP);
|
|
return;
|
|
}
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR);
|
|
}
|
|
}
|
|
|
|
static void
|
|
bfa_fcs_itnim_timeout(void *arg)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) arg;
|
|
|
|
itnim->stats.timeout++;
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_TIMEOUT);
|
|
}
|
|
|
|
static void
|
|
bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim)
|
|
{
|
|
if (itnim->bfa_itnim) {
|
|
bfa_itnim_delete(itnim->bfa_itnim);
|
|
itnim->bfa_itnim = NULL;
|
|
}
|
|
|
|
bfa_fcb_itnim_free(itnim->fcs->bfad, itnim->itnim_drv);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* itnim_public FCS ITNIM public interfaces
|
|
*/
|
|
|
|
/*
|
|
* Called by rport when a new rport is created.
|
|
*
|
|
* @param[in] rport - remote port.
|
|
*/
|
|
struct bfa_fcs_itnim_s *
|
|
bfa_fcs_itnim_create(struct bfa_fcs_rport_s *rport)
|
|
{
|
|
struct bfa_fcs_lport_s *port = rport->port;
|
|
struct bfa_fcs_itnim_s *itnim;
|
|
struct bfad_itnim_s *itnim_drv;
|
|
int ret;
|
|
|
|
/*
|
|
* call bfad to allocate the itnim
|
|
*/
|
|
ret = bfa_fcb_itnim_alloc(port->fcs->bfad, &itnim, &itnim_drv);
|
|
if (ret) {
|
|
bfa_trc(port->fcs, rport->pwwn);
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Initialize itnim
|
|
*/
|
|
itnim->rport = rport;
|
|
itnim->fcs = rport->fcs;
|
|
itnim->itnim_drv = itnim_drv;
|
|
|
|
itnim->bfa_itnim = NULL;
|
|
itnim->seq_rec = BFA_FALSE;
|
|
itnim->rec_support = BFA_FALSE;
|
|
itnim->conf_comp = BFA_FALSE;
|
|
itnim->task_retry_id = BFA_FALSE;
|
|
|
|
/*
|
|
* Set State machine
|
|
*/
|
|
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
|
|
|
|
return itnim;
|
|
}
|
|
|
|
/*
|
|
* Called by rport to delete the instance of FCPIM.
|
|
*
|
|
* @param[in] rport - remote port.
|
|
*/
|
|
void
|
|
bfa_fcs_itnim_delete(struct bfa_fcs_itnim_s *itnim)
|
|
{
|
|
bfa_trc(itnim->fcs, itnim->rport->pid);
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_DELETE);
|
|
}
|
|
|
|
/*
|
|
* Notification from rport that PLOGI is complete to initiate FC-4 session.
|
|
*/
|
|
void
|
|
bfa_fcs_itnim_brp_online(struct bfa_fcs_itnim_s *itnim)
|
|
{
|
|
itnim->stats.onlines++;
|
|
|
|
if (!BFA_FCS_PID_IS_WKA(itnim->rport->pid))
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HAL_ONLINE);
|
|
}
|
|
|
|
/*
|
|
* Called by rport to handle a remote device offline.
|
|
*/
|
|
void
|
|
bfa_fcs_itnim_rport_offline(struct bfa_fcs_itnim_s *itnim)
|
|
{
|
|
itnim->stats.offlines++;
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_OFFLINE);
|
|
}
|
|
|
|
/*
|
|
* Called by rport when remote port is known to be an initiator from
|
|
* PRLI received.
|
|
*/
|
|
void
|
|
bfa_fcs_itnim_is_initiator(struct bfa_fcs_itnim_s *itnim)
|
|
{
|
|
bfa_trc(itnim->fcs, itnim->rport->pid);
|
|
itnim->stats.initiator++;
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_INITIATOR);
|
|
}
|
|
|
|
/*
|
|
* Called by rport to check if the itnim is online.
|
|
*/
|
|
bfa_status_t
|
|
bfa_fcs_itnim_get_online_state(struct bfa_fcs_itnim_s *itnim)
|
|
{
|
|
bfa_trc(itnim->fcs, itnim->rport->pid);
|
|
switch (bfa_fcs_itnim_sm_to_state(itnim_sm_table, itnim->sm)) {
|
|
case BFA_ITNIM_ONLINE:
|
|
case BFA_ITNIM_INITIATIOR:
|
|
return BFA_STATUS_OK;
|
|
|
|
default:
|
|
return BFA_STATUS_NO_FCPIM_NEXUS;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* BFA completion callback for bfa_itnim_online().
|
|
*/
|
|
void
|
|
bfa_cb_itnim_online(void *cbarg)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cbarg;
|
|
|
|
bfa_trc(itnim->fcs, itnim->rport->pwwn);
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_ONLINE);
|
|
}
|
|
|
|
/*
|
|
* BFA completion callback for bfa_itnim_offline().
|
|
*/
|
|
void
|
|
bfa_cb_itnim_offline(void *cb_arg)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cb_arg;
|
|
|
|
bfa_trc(itnim->fcs, itnim->rport->pwwn);
|
|
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_OFFLINE);
|
|
}
|
|
|
|
/*
|
|
* Mark the beginning of PATH TOV handling. IO completion callbacks
|
|
* are still pending.
|
|
*/
|
|
void
|
|
bfa_cb_itnim_tov_begin(void *cb_arg)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cb_arg;
|
|
|
|
bfa_trc(itnim->fcs, itnim->rport->pwwn);
|
|
}
|
|
|
|
/*
|
|
* Mark the end of PATH TOV handling. All pending IOs are already cleaned up.
|
|
*/
|
|
void
|
|
bfa_cb_itnim_tov(void *cb_arg)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cb_arg;
|
|
struct bfad_itnim_s *itnim_drv = itnim->itnim_drv;
|
|
|
|
bfa_trc(itnim->fcs, itnim->rport->pwwn);
|
|
itnim_drv->state = ITNIM_STATE_TIMEOUT;
|
|
}
|
|
|
|
/*
|
|
* BFA notification to FCS/driver for second level error recovery.
|
|
*
|
|
* Atleast one I/O request has timedout and target is unresponsive to
|
|
* repeated abort requests. Second level error recovery should be initiated
|
|
* by starting implicit logout and recovery procedures.
|
|
*/
|
|
void
|
|
bfa_cb_itnim_sler(void *cb_arg)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cb_arg;
|
|
|
|
itnim->stats.sler++;
|
|
bfa_trc(itnim->fcs, itnim->rport->pwwn);
|
|
bfa_sm_send_event(itnim->rport, RPSM_EVENT_LOGO_IMP);
|
|
}
|
|
|
|
struct bfa_fcs_itnim_s *
|
|
bfa_fcs_itnim_lookup(struct bfa_fcs_lport_s *port, wwn_t rpwwn)
|
|
{
|
|
struct bfa_fcs_rport_s *rport;
|
|
rport = bfa_fcs_rport_lookup(port, rpwwn);
|
|
|
|
if (!rport)
|
|
return NULL;
|
|
|
|
WARN_ON(rport->itnim == NULL);
|
|
return rport->itnim;
|
|
}
|
|
|
|
bfa_status_t
|
|
bfa_fcs_itnim_attr_get(struct bfa_fcs_lport_s *port, wwn_t rpwwn,
|
|
struct bfa_itnim_attr_s *attr)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = NULL;
|
|
|
|
itnim = bfa_fcs_itnim_lookup(port, rpwwn);
|
|
|
|
if (itnim == NULL)
|
|
return BFA_STATUS_NO_FCPIM_NEXUS;
|
|
|
|
attr->state = bfa_fcs_itnim_sm_to_state(itnim_sm_table, itnim->sm);
|
|
attr->retry = itnim->seq_rec;
|
|
attr->rec_support = itnim->rec_support;
|
|
attr->conf_comp = itnim->conf_comp;
|
|
attr->task_retry_id = itnim->task_retry_id;
|
|
return BFA_STATUS_OK;
|
|
}
|
|
|
|
bfa_status_t
|
|
bfa_fcs_itnim_stats_get(struct bfa_fcs_lport_s *port, wwn_t rpwwn,
|
|
struct bfa_itnim_stats_s *stats)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = NULL;
|
|
|
|
WARN_ON(port == NULL);
|
|
|
|
itnim = bfa_fcs_itnim_lookup(port, rpwwn);
|
|
|
|
if (itnim == NULL)
|
|
return BFA_STATUS_NO_FCPIM_NEXUS;
|
|
|
|
memcpy(stats, &itnim->stats, sizeof(struct bfa_itnim_stats_s));
|
|
|
|
return BFA_STATUS_OK;
|
|
}
|
|
|
|
bfa_status_t
|
|
bfa_fcs_itnim_stats_clear(struct bfa_fcs_lport_s *port, wwn_t rpwwn)
|
|
{
|
|
struct bfa_fcs_itnim_s *itnim = NULL;
|
|
|
|
WARN_ON(port == NULL);
|
|
|
|
itnim = bfa_fcs_itnim_lookup(port, rpwwn);
|
|
|
|
if (itnim == NULL)
|
|
return BFA_STATUS_NO_FCPIM_NEXUS;
|
|
|
|
memset(&itnim->stats, 0, sizeof(struct bfa_itnim_stats_s));
|
|
return BFA_STATUS_OK;
|
|
}
|
|
|
|
void
|
|
bfa_fcs_fcpim_uf_recv(struct bfa_fcs_itnim_s *itnim,
|
|
struct fchs_s *fchs, u16 len)
|
|
{
|
|
struct fc_els_cmd_s *els_cmd;
|
|
|
|
bfa_trc(itnim->fcs, fchs->type);
|
|
|
|
if (fchs->type != FC_TYPE_ELS)
|
|
return;
|
|
|
|
els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
|
|
|
|
bfa_trc(itnim->fcs, els_cmd->els_code);
|
|
|
|
switch (els_cmd->els_code) {
|
|
case FC_ELS_PRLO:
|
|
bfa_fcs_rport_prlo(itnim->rport, fchs->ox_id);
|
|
break;
|
|
|
|
default:
|
|
WARN_ON(1);
|
|
}
|
|
}
|