Commit 92261156 authored by Joe Eykholt's avatar Joe Eykholt Committed by James Bottomley
Browse files

[SCSI] libfc: don't require a local exchange for incoming requests 



Incoming requests shouldn't require a local exchange if we're
just going to reply with one or two frames and don't expect
anything further.  Don't allocate exchanges for such requests
until requested by the upper-layer protocol.

The sequence is always NULL for new requests, so remove
that as an argument to request handlers.

Also change the first argument to lport->tt.seq_els_rsp_send
from the sequence pointer to the received frame pointer, to
supply the exchange IDs and destination ID info.

Signed-off-by: default avatarJoe Eykholt <jeykholt@cisco.com>
Signed-off-by: default avatarRobert Love <robert.w.love@intel.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent 239e8104

drivers/scsi/fcoe/libfcoe.c

+4 −5
Original line number Diff line number Diff line
@@ -2341,20 +2341,19 @@ drop: 


/**

 * fcoe_ctlr_disc_recv - discovery receive handler for VN2VN mode.

 * @fip: The FCoE controller

 * @lport: The local port

 * @fp: The received frame

 *

 * This should never be called since we don't see RSCNs or other

 * fabric-generated ELSes.

 */

static void fcoe_ctlr_disc_recv(struct fc_seq *seq, struct fc_frame *fp,

				struct fc_lport *lport)

static void fcoe_ctlr_disc_recv(struct fc_lport *lport, struct fc_frame *fp)

{

	struct fc_seq_els_data rjt_data;



	rjt_data.fp = NULL;

	rjt_data.reason = ELS_RJT_UNSUP;

	rjt_data.explan = ELS_EXPL_NONE;

	lport->tt.seq_els_rsp_send(seq, ELS_LS_RJT, &rjt_data);

	lport->tt.seq_els_rsp_send(fp, ELS_LS_RJT, &rjt_data);

	fc_frame_free(fp);

}

drivers/scsi/libfc/fc_disc.c

+7 −12
Original line number Diff line number Diff line
@@ -75,15 +75,13 @@ void fc_disc_stop_rports(struct fc_disc *disc) 


/**

 * fc_disc_recv_rscn_req() - Handle Registered State Change Notification (RSCN)

 * @sp:	   The sequence of the RSCN exchange

 * @disc:  The discovery object to which the RSCN applies

 * @fp:	   The RSCN frame

 * @lport: The local port that the request will be sent on

 *

 * Locking Note: This function expects that the disc_mutex is locked

 *		 before it is called.

 */

static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp,

				  struct fc_disc *disc)

static void fc_disc_recv_rscn_req(struct fc_disc *disc, struct fc_frame *fp)

{

	struct fc_lport *lport;

	struct fc_els_rscn *rp;
@@ -151,7 +149,7 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp, 
			break;

		}

	}

	lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL);

	lport->tt.seq_els_rsp_send(fp, ELS_LS_ACC, NULL);



	/*

	 * If not doing a complete rediscovery, do GPN_ID on
@@ -177,25 +175,22 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp, 
	return;

reject:

	FC_DISC_DBG(disc, "Received a bad RSCN frame\n");

	rjt_data.fp = NULL;

	rjt_data.reason = ELS_RJT_LOGIC;

	rjt_data.explan = ELS_EXPL_NONE;

	lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);

	lport->tt.seq_els_rsp_send(fp, ELS_LS_RJT, &rjt_data);

	fc_frame_free(fp);

}



/**

 * fc_disc_recv_req() - Handle incoming requests

 * @sp:	   The sequence of the request exchange

 * @fp:	   The request frame

 * @lport: The local port receiving the request

 * @fp:	   The request frame

 *

 * Locking Note: This function is called from the EM and will lock

 *		 the disc_mutex before calling the handler for the

 *		 request.

 */

static void fc_disc_recv_req(struct fc_seq *sp, struct fc_frame *fp,

			     struct fc_lport *lport)

static void fc_disc_recv_req(struct fc_lport *lport, struct fc_frame *fp)

{

	u8 op;

	struct fc_disc *disc = &lport->disc;
@@ -204,7 +199,7 @@ static void fc_disc_recv_req(struct fc_seq *sp, struct fc_frame *fp, 
	switch (op) {

	case ELS_RSCN:

		mutex_lock(&disc->disc_mutex);

		fc_disc_recv_rscn_req(sp, fp, disc);

		fc_disc_recv_rscn_req(disc, fp);

		mutex_unlock(&disc->disc_mutex);

		break;

	default:

drivers/scsi/libfc/fc_exch.c

+100 −88
Original line number Diff line number Diff line
@@ -129,11 +129,11 @@ struct fc_exch_mgr_anchor { 
};



static void fc_exch_rrq(struct fc_exch *);

static void fc_seq_ls_acc(struct fc_seq *);

static void fc_seq_ls_rjt(struct fc_seq *, enum fc_els_rjt_reason,

static void fc_seq_ls_acc(struct fc_frame *);

static void fc_seq_ls_rjt(struct fc_frame *, enum fc_els_rjt_reason,

			  enum fc_els_rjt_explan);

static void fc_exch_els_rec(struct fc_seq *, struct fc_frame *);

static void fc_exch_els_rrq(struct fc_seq *, struct fc_frame *);

static void fc_exch_els_rec(struct fc_frame *);

static void fc_exch_els_rrq(struct fc_frame *);



/*

 * Internal implementation notes.
@@ -1003,28 +1003,30 @@ static void fc_exch_set_addr(struct fc_exch *ep, 
/**

 * fc_seq_els_rsp_send() - Send an ELS response using infomation from

 *			   the existing sequence/exchange.

 * @sp:	      The sequence/exchange to get information from

 * @fp:	      The received frame

 * @els_cmd:  The ELS command to be sent

 * @els_data: The ELS data to be sent

 *

 * The received frame is not freed.

 */

static void fc_seq_els_rsp_send(struct fc_seq *sp, enum fc_els_cmd els_cmd,

static void fc_seq_els_rsp_send(struct fc_frame *fp, enum fc_els_cmd els_cmd,

				struct fc_seq_els_data *els_data)

{

	switch (els_cmd) {

	case ELS_LS_RJT:

		fc_seq_ls_rjt(sp, els_data->reason, els_data->explan);

		fc_seq_ls_rjt(fp, els_data->reason, els_data->explan);

		break;

	case ELS_LS_ACC:

		fc_seq_ls_acc(sp);

		fc_seq_ls_acc(fp);

		break;

	case ELS_RRQ:

		fc_exch_els_rrq(sp, els_data->fp);

		fc_exch_els_rrq(fp);

		break;

	case ELS_REC:

		fc_exch_els_rec(sp, els_data->fp);

		fc_exch_els_rec(fp);

		break;

	default:

		FC_EXCH_DBG(fc_seq_exch(sp), "Invalid ELS CMD:%x\n", els_cmd);

		FC_LPORT_DBG(fr_dev(fp), "Invalid ELS CMD:%x\n", els_cmd);

	}

}
@@ -1253,11 +1255,13 @@ static struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp) 
}



/**

 * fc_exch_recv_req() - Handler for an incoming request where is other

 *			end is originating the sequence

 * fc_exch_recv_req() - Handler for an incoming request

 * @lport: The local port that received the request

 * @mp:	   The EM that the exchange is on

 * @fp:	   The request frame

 *

 * This is used when the other end is originating the exchange

 * and the sequence.

 */

static void fc_exch_recv_req(struct fc_lport *lport, struct fc_exch_mgr *mp,

			     struct fc_frame *fp)
@@ -1275,8 +1279,17 @@ static void fc_exch_recv_req(struct fc_lport *lport, struct fc_exch_mgr *mp, 
		fc_frame_free(fp);

		return;

	}

	fr_dev(fp) = lport;



	BUG_ON(fr_seq(fp));		/* XXX remove later */



	/*

	 * If the RX_ID is 0xffff, don't allocate an exchange.

	 * The upper-level protocol may request one later, if needed.

	 */

	if (fh->fh_rx_id == htons(FC_XID_UNKNOWN))

		return lport->tt.lport_recv(lport, fp);



	fr_seq(fp) = NULL;

	reject = fc_seq_lookup_recip(lport, mp, fp);

	if (reject == FC_RJT_NONE) {

		sp = fr_seq(fp);	/* sequence will be held */
@@ -1298,7 +1311,7 @@ static void fc_exch_recv_req(struct fc_lport *lport, struct fc_exch_mgr *mp, 
		if (ep->resp)

			ep->resp(sp, fp, ep->arg);

		else

			lport->tt.lport_recv(lport, sp, fp);

			lport->tt.lport_recv(lport, fp);

		fc_exch_release(ep);	/* release from lookup */

	} else {

		FC_LPORT_DBG(lport, "exch/seq lookup failed: reject %x\n",
@@ -1566,53 +1579,55 @@ static void fc_exch_recv_bls(struct fc_exch_mgr *mp, struct fc_frame *fp) 


/**

 * fc_seq_ls_acc() - Accept sequence with LS_ACC

 * @req_sp: The request sequence

 * @rx_fp: The received frame, not freed here.

 *

 * If this fails due to allocation or transmit congestion, assume the

 * originator will repeat the sequence.

 */

static void fc_seq_ls_acc(struct fc_seq *req_sp)

static void fc_seq_ls_acc(struct fc_frame *rx_fp)

{

	struct fc_seq *sp;

	struct fc_lport *lport;

	struct fc_els_ls_acc *acc;

	struct fc_frame *fp;



	sp = fc_seq_start_next(req_sp);

	fp = fc_frame_alloc(fc_seq_exch(sp)->lp, sizeof(*acc));

	if (fp) {

	lport = fr_dev(rx_fp);

	fp = fc_frame_alloc(lport, sizeof(*acc));

	if (!fp)

		return;

	acc = fc_frame_payload_get(fp, sizeof(*acc));

	memset(acc, 0, sizeof(*acc));

	acc->la_cmd = ELS_LS_ACC;

		fc_seq_send_last(sp, fp, FC_RCTL_ELS_REP, FC_TYPE_ELS);

	}

	fc_fill_reply_hdr(fp, rx_fp, FC_RCTL_ELS_REP, 0);

	lport->tt.frame_send(lport, fp);

}



/**

 * fc_seq_ls_rjt() - Reject a sequence with ELS LS_RJT

 * @req_sp: The request sequence

 * @rx_fp: The received frame, not freed here.

 * @reason: The reason the sequence is being rejected

 * @explan: The explaination for the rejection

 * @explan: The explanation for the rejection

 *

 * If this fails due to allocation or transmit congestion, assume the

 * originator will repeat the sequence.

 */

static void fc_seq_ls_rjt(struct fc_seq *req_sp, enum fc_els_rjt_reason reason,

static void fc_seq_ls_rjt(struct fc_frame *rx_fp, enum fc_els_rjt_reason reason,

			  enum fc_els_rjt_explan explan)

{

	struct fc_seq *sp;

	struct fc_lport *lport;

	struct fc_els_ls_rjt *rjt;

	struct fc_frame *fp;



	sp = fc_seq_start_next(req_sp);

	fp = fc_frame_alloc(fc_seq_exch(sp)->lp, sizeof(*rjt));

	if (fp) {

	lport = fr_dev(rx_fp);

	fp = fc_frame_alloc(lport, sizeof(*rjt));

	if (!fp)

		return;

	rjt = fc_frame_payload_get(fp, sizeof(*rjt));

	memset(rjt, 0, sizeof(*rjt));

	rjt->er_cmd = ELS_LS_RJT;

	rjt->er_reason = reason;

	rjt->er_explan = explan;

		fc_seq_send_last(sp, fp, FC_RCTL_ELS_REP, FC_TYPE_ELS);

	}

	fc_fill_reply_hdr(fp, rx_fp, FC_RCTL_ELS_REP, 0);

	lport->tt.frame_send(lport, fp);

}



/**
@@ -1714,18 +1729,34 @@ void fc_exch_mgr_reset(struct fc_lport *lport, u32 sid, u32 did) 
}

EXPORT_SYMBOL(fc_exch_mgr_reset);



/**

 * fc_exch_lookup() - find an exchange

 * @lport: The local port

 * @xid: The exchange ID

 *

 * Returns exchange pointer with hold for caller, or NULL if not found.

 */

static struct fc_exch *fc_exch_lookup(struct fc_lport *lport, u32 xid)

{

	struct fc_exch_mgr_anchor *ema;



	list_for_each_entry(ema, &lport->ema_list, ema_list)

		if (ema->mp->min_xid <= xid && xid <= ema->mp->max_xid)

			return fc_exch_find(ema->mp, xid);

	return NULL;

}



/**

 * fc_exch_els_rec() - Handler for ELS REC (Read Exchange Concise) requests

 * @sp:	 The sequence the REC is on

 * @rfp: The REC frame

 * @rfp: The REC frame, not freed here.

 *

 * Note that the requesting port may be different than the S_ID in the request.

 */

static void fc_exch_els_rec(struct fc_seq *sp, struct fc_frame *rfp)

static void fc_exch_els_rec(struct fc_frame *rfp)

{

	struct fc_lport *lport;

	struct fc_frame *fp;

	struct fc_exch *ep;

	struct fc_exch_mgr *em;

	struct fc_els_rec *rp;

	struct fc_els_rec_acc *acc;

	enum fc_els_rjt_reason reason = ELS_RJT_LOGIC;
@@ -1734,6 +1765,7 @@ static void fc_exch_els_rec(struct fc_seq *sp, struct fc_frame *rfp) 
	u16 rxid;

	u16 oxid;



	lport = fr_dev(rfp);

	rp = fc_frame_payload_get(rfp, sizeof(*rp));

	explan = ELS_EXPL_INV_LEN;

	if (!rp)
@@ -1742,35 +1774,19 @@ static void fc_exch_els_rec(struct fc_seq *sp, struct fc_frame *rfp) 
	rxid = ntohs(rp->rec_rx_id);

	oxid = ntohs(rp->rec_ox_id);



	/*

	 * Currently it's hard to find the local S_ID from the exchange

	 * manager.  This will eventually be fixed, but for now it's easier

	 * to lookup the subject exchange twice, once as if we were

	 * the initiator, and then again if we weren't.

	 */

	em = fc_seq_exch(sp)->em;

	ep = fc_exch_find(em, oxid);

	ep = fc_exch_lookup(lport,

			    sid == fc_host_port_id(lport->host) ? oxid : rxid);

	explan = ELS_EXPL_OXID_RXID;

	if (ep && ep->oid == sid) {

		if (ep->rxid != FC_XID_UNKNOWN &&

		    rxid != FC_XID_UNKNOWN &&

		    ep->rxid != rxid)

			goto rel;

	} else {

		if (ep)

			fc_exch_release(ep);

		ep = NULL;

		if (rxid != FC_XID_UNKNOWN)

			ep = fc_exch_find(em, rxid);

	if (!ep)

		goto reject;

	}



	fp = fc_frame_alloc(fc_seq_exch(sp)->lp, sizeof(*acc));

	if (!fp) {

		fc_exch_done(sp);

	if (ep->oid != sid || oxid != ep->oxid)

		goto rel;

	if (rxid != FC_XID_UNKNOWN && rxid != ep->rxid)

		goto rel;

	fp = fc_frame_alloc(lport, sizeof(*acc));

	if (!fp)

		goto out;

	}



	acc = fc_frame_payload_get(fp, sizeof(*acc));

	memset(acc, 0, sizeof(*acc));

	acc->reca_cmd = ELS_LS_ACC;
@@ -1785,18 +1801,16 @@ static void fc_exch_els_rec(struct fc_seq *sp, struct fc_frame *rfp) 
	acc->reca_e_stat = htonl(ep->esb_stat & (ESB_ST_RESP |

						 ESB_ST_SEQ_INIT |

						 ESB_ST_COMPLETE));

	sp = fc_seq_start_next(sp);

	fc_seq_send_last(sp, fp, FC_RCTL_ELS_REP, FC_TYPE_ELS);

	fc_fill_reply_hdr(fp, rfp, FC_RCTL_ELS_REP, 0);

	lport->tt.frame_send(lport, fp);

out:

	fc_exch_release(ep);

	fc_frame_free(rfp);

	return;



rel:

	fc_exch_release(ep);

reject:

	fc_seq_ls_rjt(sp, reason, explan);

	fc_frame_free(rfp);

	fc_seq_ls_rjt(rfp, reason, explan);

}



/**
@@ -1971,20 +1985,20 @@ retry: 
	spin_unlock_bh(&ep->ex_lock);

}





/**

 * fc_exch_els_rrq() - Handler for ELS RRQ (Reset Recovery Qualifier) requests

 * @sp: The sequence that the RRQ is on

 * @fp: The RRQ frame

 * @fp: The RRQ frame, not freed here.

 */

static void fc_exch_els_rrq(struct fc_seq *sp, struct fc_frame *fp)

static void fc_exch_els_rrq(struct fc_frame *fp)

{

	struct fc_lport *lport;

	struct fc_exch *ep = NULL;	/* request or subject exchange */

	struct fc_els_rrq *rp;

	u32 sid;

	u16 xid;

	enum fc_els_rjt_explan explan;



	lport = fr_dev(fp);

	rp = fc_frame_payload_get(fp, sizeof(*rp));

	explan = ELS_EXPL_INV_LEN;

	if (!rp)
@@ -1993,11 +2007,10 @@ static void fc_exch_els_rrq(struct fc_seq *sp, struct fc_frame *fp) 
	/*

	 * lookup subject exchange.

	 */

	ep = fc_seq_exch(sp);

	sid = ntoh24(rp->rrq_s_id);		/* subject source */

	xid = ep->did == sid ? ntohs(rp->rrq_ox_id) : ntohs(rp->rrq_rx_id);

	ep = fc_exch_find(ep->em, xid);



	xid = fc_host_port_id(lport->host) == sid ?

			ntohs(rp->rrq_ox_id) : ntohs(rp->rrq_rx_id);

	ep = fc_exch_lookup(lport, xid);

	explan = ELS_EXPL_OXID_RXID;

	if (!ep)

		goto reject;
@@ -2028,15 +2041,14 @@ static void fc_exch_els_rrq(struct fc_seq *sp, struct fc_frame *fp) 
	/*

	 * Send LS_ACC.

	 */

	fc_seq_ls_acc(sp);

	fc_seq_ls_acc(fp);

	goto out;



unlock_reject:

	spin_unlock_bh(&ep->ex_lock);

reject:

	fc_seq_ls_rjt(sp, ELS_RJT_LOGIC, explan);

	fc_seq_ls_rjt(fp, ELS_RJT_LOGIC, explan);

out:

	fc_frame_free(fp);

	if (ep)

		fc_exch_release(ep);	/* drop hold from fc_exch_find */

}
@@ -2267,7 +2279,7 @@ void fc_exch_recv(struct fc_lport *lport, struct fc_frame *fp) 
			fc_exch_recv_seq_resp(ema->mp, fp);

		else if (f_ctl & FC_FC_SEQ_CTX)

			fc_exch_recv_resp(ema->mp, fp);

		else

		else	/* no EX_CTX and no SEQ_CTX */

			fc_exch_recv_req(lport, ema->mp, fp);

		break;

	default:

drivers/scsi/libfc/fc_lport.c

+19 −39
Original line number Diff line number Diff line
@@ -375,34 +375,31 @@ static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type) 


/**

 * fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report.

 * @sp:	   The sequence in the RLIR exchange

 * @fp:	   The RLIR request frame

 * @lport: Fibre Channel local port recieving the RLIR

 * @fp:	   The RLIR request frame

 *

 * Locking Note: The lport lock is expected to be held before calling

 * this function.

 */

static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp,

				   struct fc_lport *lport)

static void fc_lport_recv_rlir_req(struct fc_lport *lport, struct fc_frame *fp)

{

	FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n",

		     fc_lport_state(lport));



	lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL);

	lport->tt.seq_els_rsp_send(fp, ELS_LS_ACC, NULL);

	fc_frame_free(fp);

}



/**

 * fc_lport_recv_echo_req() - Handle received ECHO request

 * @sp:	   The sequence in the ECHO exchange

 * @fp:	   ECHO request frame

 * @lport: The local port recieving the ECHO

 * @fp:	   ECHO request frame

 *

 * Locking Note: The lport lock is expected to be held before calling

 * this function.

 */

static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp,

				   struct fc_lport *lport)

static void fc_lport_recv_echo_req(struct fc_lport *lport,

				   struct fc_frame *in_fp)

{

	struct fc_frame *fp;

	unsigned int len;
@@ -431,15 +428,14 @@ static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp, 


/**

 * fc_lport_recv_rnid_req() - Handle received Request Node ID data request

 * @sp:	   The sequence in the RNID exchange

 * @fp:	   The RNID request frame

 * @lport: The local port recieving the RNID

 * @fp:	   The RNID request frame

 *

 * Locking Note: The lport lock is expected to be held before calling

 * this function.

 */

static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp,

				   struct fc_lport *lport)

static void fc_lport_recv_rnid_req(struct fc_lport *lport,

				   struct fc_frame *in_fp)

{

	struct fc_frame *fp;

	struct fc_els_rnid *req;
@@ -457,10 +453,9 @@ static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, 


	req = fc_frame_payload_get(in_fp, sizeof(*req));

	if (!req) {

		rjt_data.fp = NULL;

		rjt_data.reason = ELS_RJT_LOGIC;

		rjt_data.explan = ELS_EXPL_NONE;

		lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);

		lport->tt.seq_els_rsp_send(in_fp, ELS_LS_RJT, &rjt_data);

	} else {

		fmt = req->rnid_fmt;

		len = sizeof(*rp);
@@ -492,17 +487,15 @@ static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, 


/**

 * fc_lport_recv_logo_req() - Handle received fabric LOGO request

 * @sp:	   The sequence in the LOGO exchange

 * @fp:	   The LOGO request frame

 * @lport: The local port recieving the LOGO

 * @fp:	   The LOGO request frame

 *

 * Locking Note: The lport lock is exected to be held before calling

 * this function.

 */

static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp,

				   struct fc_lport *lport)

static void fc_lport_recv_logo_req(struct fc_lport *lport, struct fc_frame *fp)

{

	lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL);

	lport->tt.seq_els_rsp_send(fp, ELS_LS_ACC, NULL);

	fc_lport_enter_reset(lport);

	fc_frame_free(fp);

}
@@ -773,9 +766,8 @@ EXPORT_SYMBOL(fc_lport_set_local_id); 


/**

 * fc_lport_recv_flogi_req() - Receive a FLOGI request

 * @sp_in: The sequence the FLOGI is on

 * @rx_fp: The FLOGI frame

 * @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.
@@ -784,13 +776,11 @@ EXPORT_SYMBOL(fc_lport_set_local_id); 
 * Locking Note: The lport lock is expected to be held before calling

 * this function.

 */

static void fc_lport_recv_flogi_req(struct fc_seq *sp_in,

				    struct fc_frame *rx_fp,

				    struct fc_lport *lport)

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_seq *sp;

	struct fc_els_flogi *flp;

	struct fc_els_flogi *new_flp;

	u64 remote_wwpn;
@@ -850,16 +840,13 @@ static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, 
	}

	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);

}



/**

 * fc_lport_recv_req() - The generic lport request handler

 * @lport: The local port that received the request

 * @sp:	   The sequence the request is on

 * @fp:	   The request frame

 *

 * This function will see if the lport handles the request or
@@ -868,11 +855,10 @@ out: 
 * Locking Note: This function should not be called with the lport

 *		 lock held becuase it will grab the lock.

 */

static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp,

			      struct fc_frame *fp)

static void fc_lport_recv_req(struct fc_lport *lport, struct fc_frame *fp)

{

	struct fc_frame_header *fh = fc_frame_header_get(fp);

	void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *);

	void (*recv)(struct fc_lport *, struct fc_frame *);



	mutex_lock(&lport->lp_mutex);
@@ -912,19 +898,13 @@ static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, 
			break;

		}



		recv(sp, fp, lport);

		recv(lport, fp);

	} else {

		FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n",

			     fr_eof(fp));

		fc_frame_free(fp);

	}

	mutex_unlock(&lport->lp_mutex);



	/*

	 *  The common exch_done for all request may not be good

	 *  if any request requires longer hold on exhange. XXX

	 */

	lport->tt.exch_done(sp);

}



/**

drivers/scsi/libfc/fc_rport.c

+39 −73

File changed.

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