Ejemplo n.º 1
0
static void fc_lport_enter_rft_id(struct fc_lport *lport)
{
	struct fc_frame *fp;
	struct fc_ns_fts *lps;
	int i;

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

	fc_lport_state_enter(lport, LPORT_ST_RFT_ID);

	lps = &lport->fcts;
	i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]);
	while (--i >= 0)
		if (ntohl(lps->ff_type_map[i]) != 0)
			break;
	if (i < 0) {
		
		fc_lport_enter_scr(lport);
		return;
	}

	fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
			    sizeof(struct fc_ns_rft));
	if (!fp) {
		fc_lport_error(lport, fp);
		return;
	}

	if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RFT_ID,
				  fc_lport_rft_id_resp,
				  lport, lport->e_d_tov))
		fc_lport_error(lport, fp);
}
Ejemplo n.º 2
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);
}
Ejemplo n.º 3
0
/**
 * fc_lport_enter_ns() - register some object with the name server
 * @lport: Fibre Channel local port to register
 *
 * Locking Note: The lport lock is expected to be held before calling
 * this routine.
 */
static void fc_lport_enter_ns(struct fc_lport *lport, enum fc_lport_state state)
{
	struct fc_frame *fp;
	enum fc_ns_req cmd;
	int size = sizeof(struct fc_ct_hdr);
	size_t len;

	FC_LPORT_DBG(lport, "Entered %s state from %s state\n",
		     fc_lport_state_names[state],
		     fc_lport_state(lport));

	fc_lport_state_enter(lport, state);

	switch (state) {
	case LPORT_ST_RNN_ID:
		cmd = FC_NS_RNN_ID;
		size += sizeof(struct fc_ns_rn_id);
		break;
	case LPORT_ST_RSNN_NN:
		len = strnlen(fc_host_symbolic_name(lport->host), 255);
		/* if there is no symbolic name, skip to RFT_ID */
		if (!len)
			return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);
		cmd = FC_NS_RSNN_NN;
		size += sizeof(struct fc_ns_rsnn) + len;
		break;
	case LPORT_ST_RSPN_ID:
		len = strnlen(fc_host_symbolic_name(lport->host), 255);
		/* if there is no symbolic name, skip to RFT_ID */
		if (!len)
			return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);
		cmd = FC_NS_RSPN_ID;
		size += sizeof(struct fc_ns_rspn) + len;
		break;
	case LPORT_ST_RFT_ID:
		cmd = FC_NS_RFT_ID;
		size += sizeof(struct fc_ns_rft);
		break;
	case LPORT_ST_RFF_ID:
		cmd = FC_NS_RFF_ID;
		size += sizeof(struct fc_ns_rff_id);
		break;
	default:
		fc_lport_error(lport, NULL);
		return;
	}

	fp = fc_frame_alloc(lport, size);
	if (!fp) {
		fc_lport_error(lport, fp);
		return;
	}

	if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, cmd,
				  fc_lport_ns_resp,
				  lport, 3 * lport->r_a_tov))
		fc_lport_error(lport, fp);
}
Ejemplo n.º 4
0
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);

	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, ELS_FLOGI,
				  fc_lport_flogi_resp, lport, lport->e_d_tov))
		fc_lport_error(lport, NULL);
}
Ejemplo n.º 5
0
static void fc_lport_recv_flogi_req(struct fc_lport *lport,
				    struct fc_frame *rx_fp)
{
	struct fc_frame *fp;
	struct fc_frame_header *fh;
	struct fc_els_flogi *flp;
	struct fc_els_flogi *new_flp;
	u64 remote_wwpn;
	u32 remote_fid;
	u32 local_fid;

	FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n",
		     fc_lport_state(lport));

	remote_fid = fc_frame_sid(rx_fp);
	flp = fc_frame_payload_get(rx_fp, sizeof(*flp));
	if (!flp)
		goto out;
	remote_wwpn = get_unaligned_be64(&flp->fl_wwpn);
	if (remote_wwpn == lport->wwpn) {
		printk(KERN_WARNING "host%d: libfc: Received FLOGI from port "
		       "with same WWPN %16.16llx\n",
		       lport->host->host_no, remote_wwpn);
		goto out;
	}
	FC_LPORT_DBG(lport, "FLOGI from port WWPN %16.16llx\n", remote_wwpn);

	local_fid = FC_LOCAL_PTP_FID_LO;
	if (remote_wwpn < lport->wwpn) {
		local_fid = FC_LOCAL_PTP_FID_HI;
		if (!remote_fid || remote_fid == local_fid)
			remote_fid = FC_LOCAL_PTP_FID_LO;
	} else if (!remote_fid) {
		remote_fid = FC_LOCAL_PTP_FID_HI;
	}

	fc_lport_set_port_id(lport, local_fid, rx_fp);

	fp = fc_frame_alloc(lport, sizeof(*flp));
	if (fp) {
		new_flp = fc_frame_payload_get(fp, sizeof(*flp));
		fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI);
		new_flp->fl_cmd = (u8) ELS_LS_ACC;

		fc_fill_reply_hdr(fp, rx_fp, FC_RCTL_ELS_REP, 0);
		fh = fc_frame_header_get(fp);
		hton24(fh->fh_s_id, local_fid);
		hton24(fh->fh_d_id, remote_fid);
		lport->tt.frame_send(lport, fp);

	} else {
		fc_lport_error(lport, fp);
	}
	fc_lport_ptp_setup(lport, remote_fid, remote_wwpn,
			   get_unaligned_be64(&flp->fl_wwnn));
out:
	fc_frame_free(rx_fp);
}
Ejemplo n.º 6
0
static void fc_lport_enter_scr(struct fc_lport *lport)
{
	struct fc_frame *fp;

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

	fc_lport_state_enter(lport, LPORT_ST_SCR);

	fp = fc_frame_alloc(lport, sizeof(struct fc_els_scr));
	if (!fp) {
		fc_lport_error(lport, fp);
		return;
	}

	if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR,
				  fc_lport_scr_resp, lport, lport->e_d_tov))
		fc_lport_error(lport, NULL);
}
Ejemplo n.º 7
0
static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp,
				 void *lp_arg)
{
	struct fc_lport *lport = lp_arg;
	struct fc_frame_header *fh;
	struct fc_ct_hdr *ct;

	FC_LPORT_DBG(lport, "Received a RPN_ID %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_RPN_ID) {
		FC_LPORT_DBG(lport, "Received a RPN_ID 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;
	}

	fh = fc_frame_header_get(fp);
	ct = fc_frame_payload_get(fp, sizeof(*ct));
	if (fh && ct && fh->fh_type == FC_TYPE_CT &&
	    ct->ct_fs_type == FC_FST_DIR &&
	    ct->ct_fs_subtype == FC_NS_SUBTYPE &&
	    ntohs(ct->ct_cmd) == FC_FS_ACC)
		fc_lport_enter_rft_id(lport);
	else
		fc_lport_error(lport, fp);

out:
	fc_frame_free(fp);
err:
	mutex_unlock(&lport->lp_mutex);
}
Ejemplo n.º 8
0
static void fc_lport_enter_logo(struct fc_lport *lport)
{
	struct fc_frame *fp;
	struct fc_els_logo *logo;

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

	fc_lport_state_enter(lport, LPORT_ST_LOGO);

	fp = fc_frame_alloc(lport, sizeof(*logo));
	if (!fp) {
		fc_lport_error(lport, fp);
		return;
	}

	if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO,
				  fc_lport_logo_resp, lport, lport->e_d_tov))
		fc_lport_error(lport, NULL);
}
Ejemplo n.º 9
0
static void fc_lport_enter_rpn_id(struct fc_lport *lport)
{
	struct fc_frame *fp;

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

	fc_lport_state_enter(lport, LPORT_ST_RPN_ID);

	fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
			    sizeof(struct fc_ns_rn_id));
	if (!fp) {
		fc_lport_error(lport, fp);
		return;
	}

	if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RPN_ID,
				  fc_lport_rpn_id_resp,
				  lport, lport->e_d_tov))
		fc_lport_error(lport, NULL);
}
Ejemplo n.º 10
0
/**
 * fc_lport_logo_resp() - Handle response to LOGO request
 * @sp:	    The sequence that the LOGO was on
 * @fp:	    The LOGO frame
 * @lp_arg: The lport port that received the LOGO 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.
 */
void fc_lport_logo_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 LOGO %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_LOGO) {
		FC_LPORT_DBG(lport, "Received a LOGO 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_disabled(lport);
	else
		fc_lport_error(lport, fp);

out:
	fc_frame_free(fp);
err:
	mutex_unlock(&lport->lp_mutex);
}
Ejemplo n.º 11
0
/**
 * fc_rport_enter_dns() - Create a fc_rport for the name server
 * @lport: The local port requesting a remote port for the name server
 *
 * Locking Note: The lport lock is expected to be held before calling
 * this routine.
 */
static void fc_lport_enter_dns(struct fc_lport *lport)
{
	struct fc_rport_priv *rdata;

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

	fc_lport_state_enter(lport, LPORT_ST_DNS);

	mutex_lock(&lport->disc.disc_mutex);
	rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV);
	mutex_unlock(&lport->disc.disc_mutex);
	if (!rdata)
		goto err;

	rdata->ops = &fc_lport_rport_ops;
	lport->tt.rport_login(rdata);
	return;

err:
	fc_lport_error(lport, NULL);
}
Ejemplo n.º 12
0
/**
 * fc_lport_recv_flogi_req() - Receive a FLOGI request
 * @lport: The local port that recieved the request
 * @rx_fp: The FLOGI frame
 *
 * A received FLOGI request indicates a point-to-point connection.
 * Accept it with the common service parameters indicating our N port.
 * Set up to do a PLOGI if we have the higher-number WWPN.
 *
 * Locking Note: The lport lock is expected to be held before calling
 * this function.
 */
static void fc_lport_recv_flogi_req(struct fc_lport *lport,
				    struct fc_frame *rx_fp)
{
	struct fc_frame *fp;
	struct fc_frame_header *fh;
	struct fc_els_flogi *flp;
	struct fc_els_flogi *new_flp;
	u64 remote_wwpn;
	u32 remote_fid;
	u32 local_fid;

	FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n",
		     fc_lport_state(lport));

	remote_fid = fc_frame_sid(rx_fp);
	flp = fc_frame_payload_get(rx_fp, sizeof(*flp));
	if (!flp)
		goto out;
	remote_wwpn = get_unaligned_be64(&flp->fl_wwpn);
	if (remote_wwpn == lport->wwpn) {
		printk(KERN_WARNING "host%d: libfc: Received FLOGI from port "
		       "with same WWPN %16.16llx\n",
		       lport->host->host_no, remote_wwpn);
		goto out;
	}
	FC_LPORT_DBG(lport, "FLOGI from port WWPN %16.16llx\n", remote_wwpn);

	/*
	 * XXX what is the right thing to do for FIDs?
	 * The originator might expect our S_ID to be 0xfffffe.
	 * But if so, both of us could end up with the same FID.
	 */
	local_fid = FC_LOCAL_PTP_FID_LO;
	if (remote_wwpn < lport->wwpn) {
		local_fid = FC_LOCAL_PTP_FID_HI;
		if (!remote_fid || remote_fid == local_fid)
			remote_fid = FC_LOCAL_PTP_FID_LO;
	} else if (!remote_fid) {
		remote_fid = FC_LOCAL_PTP_FID_HI;
	}

	fc_lport_set_port_id(lport, local_fid, rx_fp);

	fp = fc_frame_alloc(lport, sizeof(*flp));
	if (fp) {
		new_flp = fc_frame_payload_get(fp, sizeof(*flp));
		fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI);
		new_flp->fl_cmd = (u8) ELS_LS_ACC;

		/*
		 * Send the response.  If this fails, the originator should
		 * repeat the sequence.
		 */
		fc_fill_reply_hdr(fp, rx_fp, FC_RCTL_ELS_REP, 0);
		fh = fc_frame_header_get(fp);
		hton24(fh->fh_s_id, local_fid);
		hton24(fh->fh_d_id, remote_fid);
		lport->tt.frame_send(lport, fp);

	} else {
		fc_lport_error(lport, fp);
	}
	fc_lport_ptp_setup(lport, remote_fid, remote_wwpn,
			   get_unaligned_be64(&flp->fl_wwnn));
out:
	fc_frame_free(rx_fp);
}
Ejemplo n.º 13
0
/**
 * 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);
}
Ejemplo n.º 14
0
/**
 * fc_lport_ns_resp() - Handle response to a name server
 *			registration exchange
 * @sp:	    current sequence in exchange
 * @fp:	    response frame
 * @lp_arg: Fibre Channel host port instance
 *
 * 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_ns_resp(struct fc_seq *sp, struct fc_frame *fp,
			     void *lp_arg)
{
	struct fc_lport *lport = lp_arg;
	struct fc_frame_header *fh;
	struct fc_ct_hdr *ct;

	FC_LPORT_DBG(lport, "Received a ns %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_RNN_ID || lport->state > LPORT_ST_RFF_ID) {
		FC_LPORT_DBG(lport, "Received a name server 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;
	}

	fh = fc_frame_header_get(fp);
	ct = fc_frame_payload_get(fp, sizeof(*ct));

	if (fh && ct && fh->fh_type == FC_TYPE_CT &&
	    ct->ct_fs_type == FC_FST_DIR &&
	    ct->ct_fs_subtype == FC_NS_SUBTYPE &&
	    ntohs(ct->ct_cmd) == FC_FS_ACC)
		switch (lport->state) {
		case LPORT_ST_RNN_ID:
			fc_lport_enter_ns(lport, LPORT_ST_RSNN_NN);
			break;
		case LPORT_ST_RSNN_NN:
			fc_lport_enter_ns(lport, LPORT_ST_RSPN_ID);
			break;
		case LPORT_ST_RSPN_ID:
			fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);
			break;
		case LPORT_ST_RFT_ID:
			fc_lport_enter_ns(lport, LPORT_ST_RFF_ID);
			break;
		case LPORT_ST_RFF_ID:
			fc_lport_enter_scr(lport);
			break;
		default:
			/* should have already been caught by state checks */
			break;
		}
	else
		fc_lport_error(lport, fp);
out:
	fc_frame_free(fp);
err:
	mutex_unlock(&lport->lp_mutex);
}
Ejemplo n.º 15
0
static void fc_lport_ms_resp(struct fc_seq *sp, struct fc_frame *fp,
			     void *lp_arg)
{
	struct fc_lport *lport = lp_arg;
	struct fc_frame_header *fh;
	struct fc_ct_hdr *ct;

	FC_LPORT_DBG(lport, "Received a ms %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_RHBA || lport->state > LPORT_ST_DPRT) {
		FC_LPORT_DBG(lport, "Received a management server 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;
	}

	fh = fc_frame_header_get(fp);
	ct = fc_frame_payload_get(fp, sizeof(*ct));

	if (fh && ct && fh->fh_type == FC_TYPE_CT &&
	    ct->ct_fs_type == FC_FST_MGMT &&
	    ct->ct_fs_subtype == FC_FDMI_SUBTYPE) {
		FC_LPORT_DBG(lport, "Received a management server response, "
				    "reason=%d explain=%d\n",
				    ct->ct_reason,
				    ct->ct_explan);

		switch (lport->state) {
		case LPORT_ST_RHBA:
			if (ntohs(ct->ct_cmd) == FC_FS_ACC)
				fc_lport_enter_ms(lport, LPORT_ST_RPA);
			else 
				fc_lport_enter_scr(lport);
			break;
		case LPORT_ST_RPA:
			fc_lport_enter_scr(lport);
			break;
		case LPORT_ST_DPRT:
			fc_lport_enter_ms(lport, LPORT_ST_RHBA);
			break;
		case LPORT_ST_DHBA:
			fc_lport_enter_ms(lport, LPORT_ST_DPRT);
			break;
		default:
			
			break;
		}
	} else {
		
		fc_lport_error(lport, fp);
	}
out:
	fc_frame_free(fp);
err:
	mutex_unlock(&lport->lp_mutex);
}
Ejemplo n.º 16
0
static void fc_lport_recv_flogi_req(struct fc_seq *sp_in,
				    struct fc_frame *rx_fp,
				    struct fc_lport *lport)
{
	struct fc_frame *fp;
	struct fc_frame_header *fh;
	struct fc_seq *sp;
	struct fc_exch *ep;
	struct fc_els_flogi *flp;
	struct fc_els_flogi *new_flp;
	u64 remote_wwpn;
	u32 remote_fid;
	u32 local_fid;
	u32 f_ctl;

	FC_LPORT_DBG(lport, "Received FLOGI request while in state %s\n",
		     fc_lport_state(lport));

	fh = fc_frame_header_get(rx_fp);
	remote_fid = ntoh24(fh->fh_s_id);
	flp = fc_frame_payload_get(rx_fp, sizeof(*flp));
	if (!flp)
		goto out;
	remote_wwpn = get_unaligned_be64(&flp->fl_wwpn);
	if (remote_wwpn == lport->wwpn) {
		printk(KERN_WARNING "libfc: Received FLOGI from port "
		       "with same WWPN %llx\n", remote_wwpn);
		goto out;
	}
	FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn);

	
	local_fid = FC_LOCAL_PTP_FID_LO;
	if (remote_wwpn < lport->wwpn) {
		local_fid = FC_LOCAL_PTP_FID_HI;
		if (!remote_fid || remote_fid == local_fid)
			remote_fid = FC_LOCAL_PTP_FID_LO;
	} else if (!remote_fid) {
		remote_fid = FC_LOCAL_PTP_FID_HI;
	}

	fc_host_port_id(lport->host) = local_fid;

	fp = fc_frame_alloc(lport, sizeof(*flp));
	if (fp) {
		sp = lport->tt.seq_start_next(fr_seq(rx_fp));
		new_flp = fc_frame_payload_get(fp, sizeof(*flp));
		fc_lport_flogi_fill(lport, new_flp, ELS_FLOGI);
		new_flp->fl_cmd = (u8) ELS_LS_ACC;

		
		f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ;
		ep = fc_seq_exch(sp);
		fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
			       FC_TYPE_ELS, f_ctl, 0);
		lport->tt.seq_send(lport, sp, fp);

	} else {
		fc_lport_error(lport, fp);
	}
	fc_lport_ptp_setup(lport, remote_fid, remote_wwpn,
			   get_unaligned_be64(&flp->fl_wwnn));

out:
	sp = fr_seq(rx_fp);
	fc_frame_free(rx_fp);
}
Ejemplo n.º 17
0
static void fc_lport_enter_ms(struct fc_lport *lport, enum fc_lport_state state)
{
	struct fc_frame *fp;
	enum fc_fdmi_req cmd;
	int size = sizeof(struct fc_ct_hdr);
	size_t len;
	int numattrs;

	FC_LPORT_DBG(lport, "Entered %s state from %s state\n",
		     fc_lport_state_names[state],
		     fc_lport_state(lport));

	fc_lport_state_enter(lport, state);

	switch (state) {
	case LPORT_ST_RHBA:
		cmd = FC_FDMI_RHBA;
		
		numattrs = 10;
		len = sizeof(struct fc_fdmi_rhba);
		len -= sizeof(struct fc_fdmi_attr_entry);
		len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
		len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
		len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
		len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
		len += FC_FDMI_HBA_ATTR_MODEL_LEN;
		len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
		len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
		len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
		len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
		len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
		len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;

		size += len;
		break;
	case LPORT_ST_RPA:
		cmd = FC_FDMI_RPA;
		
		numattrs = 6;
		len = sizeof(struct fc_fdmi_rpa);
		len -= sizeof(struct fc_fdmi_attr_entry);
		len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
		len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
		len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
		len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
		len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
		len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
		len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;

		size += len;
		break;
	case LPORT_ST_DPRT:
		cmd = FC_FDMI_DPRT;
		len = sizeof(struct fc_fdmi_dprt);
		size += len;
		break;
	case LPORT_ST_DHBA:
		cmd = FC_FDMI_DHBA;
		len = sizeof(struct fc_fdmi_dhba);
		size += len;
		break;
	default:
		fc_lport_error(lport, NULL);
		return;
	}

	FC_LPORT_DBG(lport, "Cmd=0x%x Len %d size %d\n",
			     cmd, (int)len, size);
	fp = fc_frame_alloc(lport, size);
	if (!fp) {
		fc_lport_error(lport, fp);
		return;
	}

	if (!lport->tt.elsct_send(lport, FC_FID_MGMT_SERV, fp, cmd,
				  fc_lport_ms_resp,
				  lport, 3 * lport->r_a_tov))
		fc_lport_error(lport, fp);
}