Beispiel #1
0
/**
 * fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager
 * @lport: Fibre Channel local port to be logged in to the fabric
 *
 * Locking Note: The lport lock is expected to be held before calling
 * this routine.
 */
void fc_lport_enter_flogi(struct fc_lport *lport)
{
	struct fc_frame *fp;

	FC_LPORT_DBG(lport, "Entered FLOGI state from %s state\n",
		     fc_lport_state(lport));

	fc_lport_state_enter(lport, LPORT_ST_FLOGI);

	if (lport->point_to_multipoint) {
		if (lport->port_id)
			fc_lport_enter_ready(lport);
		return;
	}

	fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
	if (!fp)
		return fc_lport_error(lport, fp);

	if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
				  lport->vport ? ELS_FDISC : ELS_FLOGI,
				  fc_lport_flogi_resp, lport,
				  lport->vport ? 2 * lport->r_a_tov :
				  lport->e_d_tov))
		fc_lport_error(lport, NULL);
}
Beispiel #2
0
/**
 * fc_lport_ptp_setup() - Create an rport for point-to-point mode
 * @lport:	 The lport to attach the ptp rport to
 * @remote_fid:	 The FID of the ptp rport
 * @remote_wwpn: The WWPN of the ptp rport
 * @remote_wwnn: The WWNN of the ptp rport
 */
static void fc_lport_ptp_setup(struct fc_lport *lport,
			       u32 remote_fid, u64 remote_wwpn,
			       u64 remote_wwnn)
{
	mutex_lock(&lport->disc.disc_mutex);
	if (lport->ptp_rdata)
		lport->tt.rport_logoff(lport->ptp_rdata);
	lport->ptp_rdata = lport->tt.rport_create(lport, remote_fid);
	lport->ptp_rdata->ids.port_name = remote_wwpn;
	lport->ptp_rdata->ids.node_name = remote_wwnn;
	mutex_unlock(&lport->disc.disc_mutex);

	lport->tt.rport_login(lport->ptp_rdata);

	fc_lport_enter_ready(lport);
}
Beispiel #3
0
/**
 * fc_lport_set_port_id() - set the local port Port ID for point-to-multipoint
 * @lport: The local port which will have its Port ID set.
 * @port_id: The new port ID.
 *
 * Called by the lower-level driver when transport sets the local port_id.
 * This is used in VN_port to VN_port mode for FCoE, and causes FLOGI and
 * discovery to be skipped.
 */
void fc_lport_set_local_id(struct fc_lport *lport, u32 port_id)
{
	mutex_lock(&lport->lp_mutex);

	fc_lport_set_port_id(lport, port_id, NULL);

	switch (lport->state) {
	case LPORT_ST_RESET:
	case LPORT_ST_FLOGI:
		if (port_id)
			fc_lport_enter_ready(lport);
		break;
	default:
		break;
	}
	mutex_unlock(&lport->lp_mutex);
}
Beispiel #4
0
/**
 * fc_lport_scr_resp() - Handle response to State Change Register (SCR) request
 * @sp:	    current sequence in SCR exchange
 * @fp:	    response frame
 * @lp_arg: Fibre Channel lport port instance that sent the registration request
 *
 * Locking Note: This function will be called without the lport lock
 * held, but it will lock, call an _enter_* function or fc_lport_error
 * and then unlock the lport.
 */
static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp,
			      void *lp_arg)
{
	struct fc_lport *lport = lp_arg;
	u8 op;

	FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp));

	if (fp == ERR_PTR(-FC_EX_CLOSED))
		return;

	mutex_lock(&lport->lp_mutex);

	if (lport->state != LPORT_ST_SCR) {
		FC_LPORT_DBG(lport, "Received a SCR response, but in state "
			     "%s\n", fc_lport_state(lport));
		if (IS_ERR(fp))
			goto err;
		goto out;
	}

	if (IS_ERR(fp)) {
		fc_lport_error(lport, fp);
		goto err;
	}

	op = fc_frame_payload_op(fp);
	if (op == ELS_LS_ACC)
		fc_lport_enter_ready(lport);
	else
		fc_lport_error(lport, fp);

out:
	fc_frame_free(fp);
err:
	mutex_unlock(&lport->lp_mutex);
}