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[SCSI] bfa: Support vport symbolic name change from sysfs. 

- Implemented the FC function template set_vport_symbolic_name entry
  point to modify the vport symbolic name from sysfs.
- Implemented support to send RSPN_ID to switch to register the
  modified vport symbolic name.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Krishna Gudipati 2012-08-22 19:50:20 -07:00 committed by James Bottomley
parent c0e4eaae2e
commit ebfe83921b
3 changed files with 97 additions and 0 deletions
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2
drivers/scsi/bfa/bfa_fcs.h
View File

@ -338,6 +338,8 @@ void bfa_fcs_lport_ns_init(struct bfa_fcs_lport_s *vport);
void bfa_fcs_lport_ns_offline(struct bfa_fcs_lport_s *vport);
void bfa_fcs_lport_ns_online(struct bfa_fcs_lport_s *vport);
void bfa_fcs_lport_ns_query(struct bfa_fcs_lport_s *port);
void bfa_fcs_lport_ns_util_send_rspn_id(void *cbarg,
struct bfa_fcxp_s *fcxp_alloced);
void bfa_fcs_lport_scn_init(struct bfa_fcs_lport_s *vport);
void bfa_fcs_lport_scn_offline(struct bfa_fcs_lport_s *vport);
void bfa_fcs_lport_scn_online(struct bfa_fcs_lport_s *vport);

63
drivers/scsi/bfa/bfa_fcs_lport.c
View File

@ -4355,6 +4355,69 @@ bfa_fcs_lport_ns_boot_target_disc(bfa_fcs_lport_t *port)
}
}
void
bfa_fcs_lport_ns_util_send_rspn_id(void *cbarg, struct bfa_fcxp_s *fcxp_alloced)
{
struct bfa_fcs_lport_ns_s *ns = cbarg;
struct bfa_fcs_lport_s *port = ns->port;
struct fchs_s fchs;
struct bfa_fcxp_s *fcxp;
u8 symbl[256];
u8 *psymbl = &symbl[0];
int len;
if (!bfa_sm_cmp_state(port, bfa_fcs_lport_sm_online))
return;
/* Avoid sending RSPN in the following states. */
if (bfa_sm_cmp_state(ns, bfa_fcs_lport_ns_sm_offline) ||
bfa_sm_cmp_state(ns, bfa_fcs_lport_ns_sm_plogi_sending) ||
bfa_sm_cmp_state(ns, bfa_fcs_lport_ns_sm_plogi) ||
bfa_sm_cmp_state(ns, bfa_fcs_lport_ns_sm_plogi_retry) ||
bfa_sm_cmp_state(ns, bfa_fcs_lport_ns_sm_rspn_id_retry))
return;
memset(symbl, 0, sizeof(symbl));
bfa_trc(port->fcs, port->port_cfg.pwwn);
fcxp = fcxp_alloced ? fcxp_alloced : bfa_fcs_fcxp_alloc(port->fcs);
if (!fcxp) {
port->stats.ns_rspnid_alloc_wait++;
bfa_fcs_fcxp_alloc_wait(port->fcs->bfa, &ns->fcxp_wqe,
bfa_fcs_lport_ns_util_send_rspn_id, ns);
return;
}
ns->fcxp = fcxp;
if (port->vport) {
/*
* For Vports, we append the vport's port symbolic name
* to that of the base port.
*/
strncpy((char *)psymbl, (char *)&(bfa_fcs_lport_get_psym_name
(bfa_fcs_get_base_port(port->fcs))),
strlen((char *)&bfa_fcs_lport_get_psym_name(
bfa_fcs_get_base_port(port->fcs))));
/* Ensure we have a null terminating string. */
((char *)psymbl)[strlen((char *)&bfa_fcs_lport_get_psym_name(
bfa_fcs_get_base_port(port->fcs)))] = 0;
strncat((char *)psymbl,
(char *)&(bfa_fcs_lport_get_psym_name(port)),
strlen((char *)&bfa_fcs_lport_get_psym_name(port)));
}
len = fc_rspnid_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
bfa_fcs_lport_get_fcid(port), 0, psymbl);
bfa_fcxp_send(fcxp, NULL, port->fabric->vf_id, port->lp_tag, BFA_FALSE,
FC_CLASS_3, len, &fchs, NULL, NULL, FC_MAX_PDUSZ, 0);
port->stats.ns_rspnid_sent++;
}
/*
* FCS SCN
*/

32
drivers/scsi/bfa/bfad_attr.c
View File

@ -587,6 +587,37 @@ bfad_im_vport_disable(struct fc_vport *fc_vport, bool disable)
return 0;
}
void
bfad_im_vport_set_symbolic_name(struct fc_vport *fc_vport)
{
struct bfad_vport_s *vport = (struct bfad_vport_s *)fc_vport->dd_data;
struct bfad_im_port_s *im_port =
(struct bfad_im_port_s *)vport->drv_port.im_port;
struct bfad_s *bfad = im_port->bfad;
struct Scsi_Host *vshost = vport->drv_port.im_port->shost;
char *sym_name = fc_vport->symbolic_name;
struct bfa_fcs_vport_s *fcs_vport;
wwn_t pwwn;
unsigned long flags;
u64_to_wwn(fc_host_port_name(vshost), (u8 *)&pwwn);
spin_lock_irqsave(&bfad->bfad_lock, flags);
fcs_vport = bfa_fcs_vport_lookup(&bfad->bfa_fcs, 0, pwwn);
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
if (fcs_vport == NULL)
return;
spin_lock_irqsave(&bfad->bfad_lock, flags);
if (strlen(sym_name) > 0) {
strcpy(fcs_vport->lport.port_cfg.sym_name.symname, sym_name);
bfa_fcs_lport_ns_util_send_rspn_id(
BFA_FCS_GET_NS_FROM_PORT((&fcs_vport->lport)), NULL);
}
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
}
struct fc_function_template bfad_im_fc_function_template = {
/* Target dynamic attributes */
@ -640,6 +671,7 @@ struct fc_function_template bfad_im_fc_function_template = {
.vport_create = bfad_im_vport_create,
.vport_delete = bfad_im_vport_delete,
.vport_disable = bfad_im_vport_disable,
.set_vport_symbolic_name = bfad_im_vport_set_symbolic_name,
.bsg_request = bfad_im_bsg_request,
.bsg_timeout = bfad_im_bsg_timeout,
};