static void fc_lport_timeout(struct work_struct *work)
{
	struct fc_lport *lport =
		container_of(work, struct fc_lport,
			     retry_work.work);

	mutex_lock(&lport->lp_mutex);

	switch (lport->state) {
	case LPORT_ST_DISABLED:
		WARN_ON(1);
		break;
	case LPORT_ST_READY:
		break;
	case LPORT_ST_RESET:
		break;
	case LPORT_ST_FLOGI:
		fc_lport_enter_flogi(lport);
		break;
	case LPORT_ST_DNS:
		fc_lport_enter_dns(lport);
		break;
	case LPORT_ST_RNN_ID:
	case LPORT_ST_RSNN_NN:
	case LPORT_ST_RSPN_ID:
	case LPORT_ST_RFT_ID:
	case LPORT_ST_RFF_ID:
		fc_lport_enter_ns(lport, lport->state);
		break;
	case LPORT_ST_FDMI:
		fc_lport_enter_fdmi(lport);
		break;
	case LPORT_ST_RHBA:
	case LPORT_ST_RPA:
	case LPORT_ST_DHBA:
	case LPORT_ST_DPRT:
		fc_lport_enter_ms(lport, lport->state);
		break;
	case LPORT_ST_SCR:
		fc_lport_enter_scr(lport);
		break;
	case LPORT_ST_LOGO:
		fc_lport_enter_logo(lport);
		break;
	}

	mutex_unlock(&lport->lp_mutex);
}
예제 #2
0
static void fc_lport_timeout(struct work_struct *work)
{
	struct fc_lport *lport =
		container_of(work, struct fc_lport,
			     retry_work.work);

	mutex_lock(&lport->lp_mutex);

	switch (lport->state) {
	case LPORT_ST_DISABLED:
		WARN_ON(1);
		break;
	case LPORT_ST_READY:
		WARN_ON(1);
		break;
	case LPORT_ST_RESET:
		break;
	case LPORT_ST_FLOGI:
		fc_lport_enter_flogi(lport);
		break;
	case LPORT_ST_DNS:
		fc_lport_enter_dns(lport);
		break;
	case LPORT_ST_RPN_ID:
		fc_lport_enter_rpn_id(lport);
		break;
	case LPORT_ST_RFT_ID:
		fc_lport_enter_rft_id(lport);
		break;
	case LPORT_ST_SCR:
		fc_lport_enter_scr(lport);
		break;
	case LPORT_ST_LOGO:
		fc_lport_enter_logo(lport);
		break;
	}

	mutex_unlock(&lport->lp_mutex);
}
예제 #3
0
파일: fc_lport.c 프로젝트: ANFS/ANFS-kernel
/**
 * fc_lport_flogi_resp() - Handle response to FLOGI request
 * @sp:	    The sequence that the FLOGI was on
 * @fp:	    The FLOGI response frame
 * @lp_arg: The lport port that received the FLOGI response
 *
 * 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.
 */
void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
			 void *lp_arg)
{
	struct fc_lport *lport = lp_arg;
	struct fc_els_flogi *flp;
	u32 did;
	u16 csp_flags;
	unsigned int r_a_tov;
	unsigned int e_d_tov;
	u16 mfs;

	FC_LPORT_DBG(lport, "Received a FLOGI %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_FLOGI) {
		FC_LPORT_DBG(lport, "Received a FLOGI 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;
	}

	did = fc_frame_did(fp);
	if (fc_frame_payload_op(fp) == ELS_LS_ACC && did) {
		flp = fc_frame_payload_get(fp, sizeof(*flp));
		if (flp) {
			mfs = ntohs(flp->fl_csp.sp_bb_data) &
				FC_SP_BB_DATA_MASK;
			if (mfs >= FC_SP_MIN_MAX_PAYLOAD &&
			    mfs < lport->mfs)
				lport->mfs = mfs;
			csp_flags = ntohs(flp->fl_csp.sp_features);
			r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov);
			e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov);
			if (csp_flags & FC_SP_FT_EDTR)
				e_d_tov /= 1000000;

			lport->npiv_enabled = !!(csp_flags & FC_SP_FT_NPIV_ACC);

			if ((csp_flags & FC_SP_FT_FPORT) == 0) {
				if (e_d_tov > lport->e_d_tov)
					lport->e_d_tov = e_d_tov;
				lport->r_a_tov = 2 * e_d_tov;
				fc_lport_set_port_id(lport, did, fp);
				printk(KERN_INFO "host%d: libfc: "
				       "Port (%6.6x) entered "
				       "point-to-point mode\n",
				       lport->host->host_no, did);
				fc_lport_ptp_setup(lport, fc_frame_sid(fp),
						   get_unaligned_be64(
							   &flp->fl_wwpn),
						   get_unaligned_be64(
							   &flp->fl_wwnn));
			} else {
				lport->e_d_tov = e_d_tov;
				lport->r_a_tov = r_a_tov;
				fc_host_fabric_name(lport->host) =
					get_unaligned_be64(&flp->fl_wwnn);
				fc_lport_set_port_id(lport, did, fp);
				fc_lport_enter_dns(lport);
			}
		}
	} else {
		FC_LPORT_DBG(lport, "FLOGI RJT or bad response\n");
		fc_lport_error(lport, fp);
	}

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