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[SCSI] bfa: Defined a new LPS event to clear virtual link on a vport

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Clear virtual links was not propagated upwards to bfa from fw.
This resulted in HBA and switch being in an inconsistent state.

So defined a new LPS event for clear virtual link on a vport,
and also now clear virtual link on a baseport, is sent as a
link down event from the fw.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Krishna Gudipati 2010-03-03 17:42:39 -08:00 committed by James Bottomley
parent 4c147dd819
commit 5c1fb1d556
5 changed files with 97 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

71
drivers/scsi/bfa/bfa_lps.c
View File

@ -49,7 +49,7 @@ static void bfa_lps_send_login(struct bfa_lps_s *lps);
static void bfa_lps_send_logout(struct bfa_lps_s *lps);
static void bfa_lps_login_comp(struct bfa_lps_s *lps);
static void bfa_lps_logout_comp(struct bfa_lps_s *lps);
static void bfa_lps_cvl_event(struct bfa_lps_s *lps);
/**
* lps_pvt BFA LPS private functions
@ -62,6 +62,7 @@ enum bfa_lps_event {
BFA_LPS_SM_RESUME = 4, /* space present in reqq queue */
BFA_LPS_SM_DELETE = 5, /* lps delete from user */
BFA_LPS_SM_OFFLINE = 6, /* Link is offline */
BFA_LPS_SM_RX_CVL = 7, /* Rx clear virtual link */
};
static void bfa_lps_sm_init(struct bfa_lps_s *lps, enum bfa_lps_event event);
@ -101,6 +102,7 @@ bfa_lps_sm_init(struct bfa_lps_s *lps, enum bfa_lps_event event)
bfa_lps_free(lps);
break;
case BFA_LPS_SM_RX_CVL:
case BFA_LPS_SM_OFFLINE:
break;
@ -162,6 +164,14 @@ bfa_lps_sm_loginwait(struct bfa_lps_s *lps, enum bfa_lps_event event)
bfa_reqq_wcancel(&lps->wqe);
break;
case BFA_LPS_SM_RX_CVL:
/*
* Login was not even sent out; so when getting out
* of this state, it will appear like a login retry
* after Clear virtual link
*/
break;
default:
bfa_assert(0);
}
@ -187,6 +197,15 @@ bfa_lps_sm_online(struct bfa_lps_s *lps, enum bfa_lps_event event)
}
break;
case BFA_LPS_SM_RX_CVL:
bfa_sm_set_state(lps, bfa_lps_sm_init);
/* Let the vport module know about this event */
bfa_lps_cvl_event(lps);
bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
BFA_PL_EID_FIP_FCF_CVL, 0, "FCF Clear Virt. Link Rx");
break;
case BFA_LPS_SM_OFFLINE:
case BFA_LPS_SM_DELETE:
bfa_sm_set_state(lps, bfa_lps_sm_init);
@ -395,6 +414,20 @@ bfa_lps_logout_rsp(struct bfa_s *bfa, struct bfi_lps_logout_rsp_s *rsp)
bfa_sm_send_event(lps, BFA_LPS_SM_FWRSP);
}
/**
* Firmware received a Clear virtual link request (for FCoE)
*/
static void
bfa_lps_rx_cvl_event(struct bfa_s *bfa, struct bfi_lps_cvl_event_s *cvl)
{
struct bfa_lps_mod_s *mod = BFA_LPS_MOD(bfa);
struct bfa_lps_s *lps;
lps = BFA_LPS_FROM_TAG(mod, cvl->lp_tag);
bfa_sm_send_event(lps, BFA_LPS_SM_RX_CVL);
}
/**
* Space is available in request queue, resume queueing request to firmware.
*/
@ -531,7 +564,39 @@ bfa_lps_logout_comp(struct bfa_lps_s *lps)
bfa_cb_lps_flogo_comp(lps->bfa->bfad, lps->uarg);
}
/**
* Clear virtual link completion handler for non-fcs
*/
static void
bfa_lps_cvl_event_cb(void *arg, bfa_boolean_t complete)
{
struct bfa_lps_s *lps = arg;
if (!complete)
return;
/* Clear virtual link to base port will result in link down */
if (lps->fdisc)
bfa_cb_lps_cvl_event(lps->bfa->bfad, lps->uarg);
}
/**
* Received Clear virtual link event --direct call for fcs,
* queue for others
*/
static void
bfa_lps_cvl_event(struct bfa_lps_s *lps)
{
if (!lps->bfa->fcs) {
bfa_cb_queue(lps->bfa, &lps->hcb_qe, bfa_lps_cvl_event_cb,
lps);
return;
}
/* Clear virtual link to base port will result in link down */
if (lps->fdisc)
bfa_cb_lps_cvl_event(lps->bfa->bfad, lps->uarg);
}
/**
* lps_public BFA LPS public functions
@ -773,6 +838,10 @@ bfa_lps_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
bfa_lps_logout_rsp(bfa, msg.logout_rsp);
break;
case BFI_LPS_H2I_CVL_EVENT:
bfa_lps_rx_cvl_event(bfa, msg.cvl_event);
break;
default:
bfa_trc(bfa, m->mhdr.msg_id);
bfa_assert(0);

1
drivers/scsi/bfa/include/bfa_svc.h
View File

@ -319,6 +319,7 @@ void bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status);
void bfa_cb_lps_flogo_comp(void *bfad, void *uarg);
void bfa_cb_lps_fdisc_comp(void *bfad, void *uarg, bfa_status_t status);
void bfa_cb_lps_fdisclogo_comp(void *bfad, void *uarg);
void bfa_cb_lps_cvl_event(void *bfad, void *uarg);
#endif /* __BFA_SVC_H__ */

8
drivers/scsi/bfa/include/bfi/bfi_lps.h
View File

@ -30,6 +30,7 @@ enum bfi_lps_h2i_msgs {
enum bfi_lps_i2h_msgs {
BFI_LPS_H2I_LOGIN_RSP = BFA_I2HM(1),
BFI_LPS_H2I_LOGOUT_RSP = BFA_I2HM(2),
BFI_LPS_H2I_CVL_EVENT = BFA_I2HM(3),
};
struct bfi_lps_login_req_s {
@ -77,6 +78,12 @@ struct bfi_lps_logout_rsp_s {
u8 rsvd[2];
};
struct bfi_lps_cvl_event_s {
struct bfi_mhdr_s mh; /* common msg header */
u8 lp_tag;
u8 rsvd[3];
};
union bfi_lps_h2i_msg_u {
struct bfi_mhdr_s *msg;
struct bfi_lps_login_req_s *login_req;
@ -87,6 +94,7 @@ union bfi_lps_i2h_msg_u {
struct bfi_msg_s *msg;
struct bfi_lps_login_rsp_s *login_rsp;
struct bfi_lps_logout_rsp_s *logout_rsp;
struct bfi_lps_cvl_event_s *cvl_event;
};
#pragma pack()

9
drivers/scsi/bfa/include/cs/bfa_plog.h
View File

@ -80,7 +80,8 @@ enum bfa_plog_mid {
BFA_PL_MID_HAL_FCXP = 4,
BFA_PL_MID_HAL_UF = 5,
BFA_PL_MID_FCS = 6,
BFA_PL_MID_MAX = 7
BFA_PL_MID_LPS = 7,
BFA_PL_MID_MAX = 8
};
#define BFA_PL_MID_STRLEN 8
@ -118,7 +119,11 @@ enum bfa_plog_eid {
BFA_PL_EID_RSCN = 17,
BFA_PL_EID_DEBUG = 18,
BFA_PL_EID_MISC = 19,
BFA_PL_EID_MAX = 20
BFA_PL_EID_FIP_FCF_DISC = 20,
BFA_PL_EID_FIP_FCF_CVL = 21,
BFA_PL_EID_LOGIN = 22,
BFA_PL_EID_LOGO = 23,
BFA_PL_EID_MAX = 24
};
#define BFA_PL_ENAME_STRLEN 8

11
drivers/scsi/bfa/vport.c
View File

@ -888,4 +888,15 @@ bfa_cb_lps_fdisclogo_comp(void *bfad, void *uarg)
bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_RSP_OK);
}
/**
* Received clear virtual link
*/
void
bfa_cb_lps_cvl_event(void *bfad, void *uarg)
{
struct bfa_fcs_vport_s *vport = uarg;
/* Send an Offline followed by an ONLINE */
bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_OFFLINE);
bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_ONLINE);
}