Commit ebfe8392 authored by Krishna Gudipati's avatar Krishna Gudipati Committed by James Bottomley
Browse files

[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: default avatarKrishna Gudipati <kgudipat@brocade.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent c0e4eaae

drivers/scsi/bfa/bfa_fcs.h

+2 −0
Original line number Diff line number Diff line
@@ -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);

drivers/scsi/bfa/bfa_fcs_lport.c

+63 −0
Original line number Diff line number Diff line
@@ -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

 */

drivers/scsi/bfa/bfad_attr.c

+32 −0
Original line number Diff line number Diff line
@@ -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,

};