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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/scsi/fcoe/fcoe_ctlr.c
....@@ -1,19 +1,7 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Copyright (c) 2008-2009 Cisco Systems, Inc.  All rights reserved.
34  * Copyright (c) 2009 Intel Corporation.  All rights reserved.
4
- *
5
- * This program is free software; you can redistribute it and/or modify it
6
- * under the terms and conditions of the GNU General Public License,
7
- * version 2, as published by the Free Software Foundation.
8
- *
9
- * This program is distributed in the hope it will be useful, but WITHOUT
10
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12
- * more details.
13
- *
14
- * You should have received a copy of the GNU General Public License along with
15
- * this program; if not, write to the Free Software Foundation, Inc.,
16
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
175  *
186  * Maintained at www.Open-FCoE.org
197  */
....@@ -146,6 +134,7 @@
146134 /**
147135  * fcoe_ctlr_init() - Initialize the FCoE Controller instance
148136  * @fip: The FCoE controller to initialize
137
+ * @mode: FIP mode to set
149138  */
150139 void fcoe_ctlr_init(struct fcoe_ctlr *fip, enum fip_mode mode)
151140 {
....@@ -348,7 +337,7 @@
348337 		printk(KERN_NOTICE "libfcoe: host%d: "
349338 		       "FIP Fibre-Channel Forwarder MAC %pM deselected\n",
350339 		       fip->lp->host->host_no, fip->dest_addr);
351
-		memset(fip->dest_addr, 0, ETH_ALEN);
340
+		eth_zero_addr(fip->dest_addr);
352341 	}
353342 	if (sel) {
354343 		printk(KERN_INFO "libfcoe: host%d: FIP selected "
....@@ -461,10 +450,10 @@
461450 		switch (fip->mode) {
462451 		default:
463452 			LIBFCOE_FIP_DBG(fip, "invalid mode %d\n", fip->mode);
464
-			/* fall-through */
453
+			fallthrough;
465454 		case FIP_MODE_AUTO:
466455 			LIBFCOE_FIP_DBG(fip, "%s", "setting AUTO mode.\n");
467
-			/* fall-through */
456
+			fallthrough;
468457 		case FIP_MODE_FABRIC:
469458 		case FIP_MODE_NON_FIP:
470459 			mutex_unlock(&fip->ctlr_mutex);
....@@ -599,6 +588,7 @@
599588 /**
600589  * fcoe_ctlr_encaps() - Encapsulate an ELS frame for FIP, without sending it
601590  * @fip:   The FCoE controller for the ELS frame
591
+ * @lport: The local port
602592  * @dtype: The FIP descriptor type for the frame
603593  * @skb:   The FCoE ELS frame including FC header but no FCoE headers
604594  * @d_id:  The destination port ID.
....@@ -783,7 +773,7 @@
783773 			fc_fcoe_set_mac(mac, fh->fh_d_id);
784774 			fip->update_mac(lport, mac);
785775 		}
786
-		/* fall through */
776
+		fallthrough;
787777 	case ELS_LS_RJT:
788778 		op = fr_encaps(fp);
789779 		if (op)
....@@ -1031,7 +1021,7 @@
10311021 {
10321022 	struct fcoe_fcf *fcf;
10331023 	struct fcoe_fcf new;
1034
-	unsigned long sol_tov = msecs_to_jiffies(FCOE_CTRL_SOL_TOV);
1024
+	unsigned long sol_tov = msecs_to_jiffies(FCOE_CTLR_SOL_TOV);
10351025 	int first = 0;
10361026 	int mtu_valid;
10371027 	int found = 0;
....@@ -1314,7 +1304,7 @@
13141304 /**
13151305  * fcoe_ctlr_recv_els() - Handle an incoming link reset frame
13161306  * @fip: The FCoE controller that received the frame
1317
- * @fh:	 The received FIP header
1307
+ * @skb: The received FIP packet
13181308  *
13191309  * There may be multiple VN_Port descriptors.
13201310  * The overall length has already been checked.
....@@ -1787,7 +1777,7 @@
17871777 
17881778 /**
17891779  * fcoe_ctlr_timeout() - FIP timeout handler
1790
- * @arg: The FCoE controller that timed out
1780
+ * @t: Timer context use to obtain the controller reference
17911781  */
17921782 static void fcoe_ctlr_timeout(struct timer_list *t)
17931783 {
....@@ -1899,6 +1889,7 @@
18991889 /**
19001890  * fcoe_ctlr_recv_flogi() - Snoop pre-FIP receipt of FLOGI response
19011891  * @fip: The FCoE controller
1892
+ * @lport: The local port
19021893  * @fp:	 The FC frame to snoop
19031894  *
19041895  * Snoop potential response to FLOGI or even incoming FLOGI.
....@@ -1978,7 +1969,7 @@
19781969  *
19791970  * Returns: u64 fc world wide name
19801971  */
1981
-u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN],
1972
+u64 fcoe_wwn_from_mac(unsigned char mac[ETH_ALEN],
19821973 		      unsigned int scheme, unsigned int port)
19831974 {
19841975 	u64 wwn;
....@@ -2170,7 +2161,7 @@
21702161 
21712162 /**
21722163  * fcoe_ctlr_disc_stop_locked() - stop discovery in VN2VN mode
2173
- * @fip: The FCoE controller
2164
+ * @lport: The local port
21742165  *
21752166  * Called with ctlr_mutex held.
21762167  */
....@@ -2191,7 +2182,7 @@
21912182 
21922183 /**
21932184  * fcoe_ctlr_disc_stop() - stop discovery in VN2VN mode
2194
- * @fip: The FCoE controller
2185
+ * @lport: The local port
21952186  *
21962187  * Called through the local port template for discovery.
21972188  * Called without the ctlr_mutex held.
....@@ -2207,7 +2198,7 @@
22072198 
22082199 /**
22092200  * fcoe_ctlr_disc_stop_final() - stop discovery for shutdown in VN2VN mode
2210
- * @fip: The FCoE controller
2201
+ * @lport: The local port
22112202  *
22122203  * Called through the local port template for discovery.
22132204  * Called without the ctlr_mutex held.
....@@ -2274,7 +2265,7 @@
22742265  * fcoe_ctlr_vn_parse - parse probe request or response
22752266  * @fip: The FCoE controller
22762267  * @skb: incoming packet
2277
- * @rdata: buffer for resulting parsed VN entry plus fcoe_rport
2268
+ * @frport: parsed FCoE rport from the probe request
22782269  *
22792270  * Returns non-zero error number on error.
22802271  * Does not consume the packet.
....@@ -2413,16 +2404,14 @@
24132404 /**
24142405  * fcoe_ctlr_vn_probe_req() - handle incoming VN2VN probe request.
24152406  * @fip: The FCoE controller
2416
- * @rdata: parsed remote port with frport from the probe request
2407
+ * @frport: parsed FCoE rport from the probe request
24172408  *
24182409  * Called with ctlr_mutex held.
24192410  */
24202411 static void fcoe_ctlr_vn_probe_req(struct fcoe_ctlr *fip,
2421
-				   struct fc_rport_priv *rdata)
2412
+				   struct fcoe_rport *frport)
24222413 {
2423
-	struct fcoe_rport *frport = fcoe_ctlr_rport(rdata);
2424
-
2425
-	if (rdata->ids.port_id != fip->port_id)
2414
+	if (frport->rdata.ids.port_id != fip->port_id)
24262415 		return;
24272416 
24282417 	switch (fip->state) {
....@@ -2442,7 +2431,7 @@
24422431 		 * Probe's REC bit is not set.
24432432 		 * If we don't reply, we will change our address.
24442433 		 */
2445
-		if (fip->lp->wwpn > rdata->ids.port_name &&
2434
+		if (fip->lp->wwpn > frport->rdata.ids.port_name &&
24462435 		    !(frport->flags & FIP_FL_REC_OR_P2P)) {
24472436 			LIBFCOE_FIP_DBG(fip, "vn_probe_req: "
24482437 					"port_id collision\n");
....@@ -2450,7 +2439,7 @@
24502439 					  frport->enode_mac, 0);
24512440 			break;
24522441 		}
2453
-		/* fall through */
2442
+		fallthrough;
24542443 	case FIP_ST_VNMP_START:
24552444 		LIBFCOE_FIP_DBG(fip, "vn_probe_req: "
24562445 				"restart VN2VN negotiation\n");
....@@ -2466,14 +2455,14 @@
24662455 /**
24672456  * fcoe_ctlr_vn_probe_reply() - handle incoming VN2VN probe reply.
24682457  * @fip: The FCoE controller
2469
- * @rdata: parsed remote port with frport from the probe request
2458
+ * @frport: parsed FCoE rport from the probe request
24702459  *
24712460  * Called with ctlr_mutex held.
24722461  */
24732462 static void fcoe_ctlr_vn_probe_reply(struct fcoe_ctlr *fip,
2474
-				   struct fc_rport_priv *rdata)
2463
+				     struct fcoe_rport *frport)
24752464 {
2476
-	if (rdata->ids.port_id != fip->port_id)
2465
+	if (frport->rdata.ids.port_id != fip->port_id)
24772466 		return;
24782467 	switch (fip->state) {
24792468 	case FIP_ST_VNMP_START:
....@@ -2496,11 +2485,11 @@
24962485 /**
24972486  * fcoe_ctlr_vn_add() - Add a VN2VN entry to the list, based on a claim reply.
24982487  * @fip: The FCoE controller
2499
- * @new: newly-parsed remote port with frport as a template for new rdata
2488
+ * @new: newly-parsed FCoE rport as a template for new rdata
25002489  *
25012490  * Called with ctlr_mutex held.
25022491  */
2503
-static void fcoe_ctlr_vn_add(struct fcoe_ctlr *fip, struct fc_rport_priv *new)
2492
+static void fcoe_ctlr_vn_add(struct fcoe_ctlr *fip, struct fcoe_rport *new)
25042493 {
25052494 	struct fc_lport *lport = fip->lp;
25062495 	struct fc_rport_priv *rdata;
....@@ -2508,7 +2497,7 @@
25082497 	struct fcoe_rport *frport;
25092498 	u32 port_id;
25102499 
2511
-	port_id = new->ids.port_id;
2500
+	port_id = new->rdata.ids.port_id;
25122501 	if (port_id == fip->port_id)
25132502 		return;
25142503 
....@@ -2525,22 +2514,28 @@
25252514 	rdata->disc_id = lport->disc.disc_id;
25262515 
25272516 	ids = &rdata->ids;
2528
-	if ((ids->port_name != -1 && ids->port_name != new->ids.port_name) ||
2529
-	    (ids->node_name != -1 && ids->node_name != new->ids.node_name)) {
2517
+	if ((ids->port_name != -1 &&
2518
+	     ids->port_name != new->rdata.ids.port_name) ||
2519
+	    (ids->node_name != -1 &&
2520
+	     ids->node_name != new->rdata.ids.node_name)) {
25302521 		mutex_unlock(&rdata->rp_mutex);
25312522 		LIBFCOE_FIP_DBG(fip, "vn_add rport logoff %6.6x\n", port_id);
25322523 		fc_rport_logoff(rdata);
25332524 		mutex_lock(&rdata->rp_mutex);
25342525 	}
2535
-	ids->port_name = new->ids.port_name;
2536
-	ids->node_name = new->ids.node_name;
2526
+	ids->port_name = new->rdata.ids.port_name;
2527
+	ids->node_name = new->rdata.ids.node_name;
25372528 	mutex_unlock(&rdata->rp_mutex);
25382529 
25392530 	frport = fcoe_ctlr_rport(rdata);
25402531 	LIBFCOE_FIP_DBG(fip, "vn_add rport %6.6x %s state %d\n",
25412532 			port_id, frport->fcoe_len ? "old" : "new",
25422533 			rdata->rp_state);
2543
-	*frport = *fcoe_ctlr_rport(new);
2534
+	frport->fcoe_len = new->fcoe_len;
2535
+	frport->flags = new->flags;
2536
+	frport->login_count = new->login_count;
2537
+	memcpy(frport->enode_mac, new->enode_mac, ETH_ALEN);
2538
+	memcpy(frport->vn_mac, new->vn_mac, ETH_ALEN);
25442539 	frport->time = 0;
25452540 }
25462541 
....@@ -2572,16 +2567,14 @@
25722567 /**
25732568  * fcoe_ctlr_vn_claim_notify() - handle received FIP VN2VN Claim Notification
25742569  * @fip: The FCoE controller
2575
- * @new: newly-parsed remote port with frport as a template for new rdata
2570
+ * @new: newly-parsed FCoE rport as a template for new rdata
25762571  *
25772572  * Called with ctlr_mutex held.
25782573  */
25792574 static void fcoe_ctlr_vn_claim_notify(struct fcoe_ctlr *fip,
2580
-				      struct fc_rport_priv *new)
2575
+				      struct fcoe_rport *new)
25812576 {
2582
-	struct fcoe_rport *frport = fcoe_ctlr_rport(new);
2583
-
2584
-	if (frport->flags & FIP_FL_REC_OR_P2P) {
2577
+	if (new->flags & FIP_FL_REC_OR_P2P) {
25852578 		LIBFCOE_FIP_DBG(fip, "send probe req for P2P/REC\n");
25862579 		fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
25872580 		return;
....@@ -2590,7 +2583,7 @@
25902583 	case FIP_ST_VNMP_START:
25912584 	case FIP_ST_VNMP_PROBE1:
25922585 	case FIP_ST_VNMP_PROBE2:
2593
-		if (new->ids.port_id == fip->port_id) {
2586
+		if (new->rdata.ids.port_id == fip->port_id) {
25942587 			LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
25952588 					"restart, state %d\n",
25962589 					fip->state);
....@@ -2599,8 +2592,8 @@
25992592 		break;
26002593 	case FIP_ST_VNMP_CLAIM:
26012594 	case FIP_ST_VNMP_UP:
2602
-		if (new->ids.port_id == fip->port_id) {
2603
-			if (new->ids.port_name > fip->lp->wwpn) {
2595
+		if (new->rdata.ids.port_id == fip->port_id) {
2596
+			if (new->rdata.ids.port_name > fip->lp->wwpn) {
26042597 				LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
26052598 						"restart, port_id collision\n");
26062599 				fcoe_ctlr_vn_restart(fip);
....@@ -2612,15 +2605,16 @@
26122605 			break;
26132606 		}
26142607 		LIBFCOE_FIP_DBG(fip, "vn_claim_notify: send reply to %x\n",
2615
-				new->ids.port_id);
2616
-		fcoe_ctlr_vn_send(fip, FIP_SC_VN_CLAIM_REP, frport->enode_mac,
2617
-				  min((u32)frport->fcoe_len,
2608
+				new->rdata.ids.port_id);
2609
+		fcoe_ctlr_vn_send(fip, FIP_SC_VN_CLAIM_REP, new->enode_mac,
2610
+				  min((u32)new->fcoe_len,
26182611 				      fcoe_ctlr_fcoe_size(fip)));
26192612 		fcoe_ctlr_vn_add(fip, new);
26202613 		break;
26212614 	default:
26222615 		LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
2623
-				"ignoring claim from %x\n", new->ids.port_id);
2616
+				"ignoring claim from %x\n",
2617
+				new->rdata.ids.port_id);
26242618 		break;
26252619 	}
26262620 }
....@@ -2628,15 +2622,15 @@
26282622 /**
26292623  * fcoe_ctlr_vn_claim_resp() - handle received Claim Response
26302624  * @fip: The FCoE controller that received the frame
2631
- * @new: newly-parsed remote port with frport from the Claim Response
2625
+ * @new: newly-parsed FCoE rport from the Claim Response
26322626  *
26332627  * Called with ctlr_mutex held.
26342628  */
26352629 static void fcoe_ctlr_vn_claim_resp(struct fcoe_ctlr *fip,
2636
-				    struct fc_rport_priv *new)
2630
+				    struct fcoe_rport *new)
26372631 {
26382632 	LIBFCOE_FIP_DBG(fip, "claim resp from from rport %x - state %s\n",
2639
-			new->ids.port_id, fcoe_ctlr_state(fip->state));
2633
+			new->rdata.ids.port_id, fcoe_ctlr_state(fip->state));
26402634 	if (fip->state == FIP_ST_VNMP_UP || fip->state == FIP_ST_VNMP_CLAIM)
26412635 		fcoe_ctlr_vn_add(fip, new);
26422636 }
....@@ -2644,28 +2638,28 @@
26442638 /**
26452639  * fcoe_ctlr_vn_beacon() - handle received beacon.
26462640  * @fip: The FCoE controller that received the frame
2647
- * @new: newly-parsed remote port with frport from the Beacon
2641
+ * @new: newly-parsed FCoE rport from the Beacon
26482642  *
26492643  * Called with ctlr_mutex held.
26502644  */
26512645 static void fcoe_ctlr_vn_beacon(struct fcoe_ctlr *fip,
2652
-				struct fc_rport_priv *new)
2646
+				struct fcoe_rport *new)
26532647 {
26542648 	struct fc_lport *lport = fip->lp;
26552649 	struct fc_rport_priv *rdata;
26562650 	struct fcoe_rport *frport;
26572651 
2658
-	frport = fcoe_ctlr_rport(new);
2659
-	if (frport->flags & FIP_FL_REC_OR_P2P) {
2652
+	if (new->flags & FIP_FL_REC_OR_P2P) {
26602653 		LIBFCOE_FIP_DBG(fip, "p2p beacon while in vn2vn mode\n");
26612654 		fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
26622655 		return;
26632656 	}
2664
-	rdata = fc_rport_lookup(lport, new->ids.port_id);
2657
+	rdata = fc_rport_lookup(lport, new->rdata.ids.port_id);
26652658 	if (rdata) {
2666
-		if (rdata->ids.node_name == new->ids.node_name &&
2667
-		    rdata->ids.port_name == new->ids.port_name) {
2659
+		if (rdata->ids.node_name == new->rdata.ids.node_name &&
2660
+		    rdata->ids.port_name == new->rdata.ids.port_name) {
26682661 			frport = fcoe_ctlr_rport(rdata);
2662
+
26692663 			LIBFCOE_FIP_DBG(fip, "beacon from rport %x\n",
26702664 					rdata->ids.port_id);
26712665 			if (!frport->time && fip->state == FIP_ST_VNMP_UP) {
....@@ -2688,7 +2682,7 @@
26882682 	 * Don't add the neighbor yet.
26892683 	 */
26902684 	LIBFCOE_FIP_DBG(fip, "beacon from new rport %x. sending claim notify\n",
2691
-			new->ids.port_id);
2685
+			new->rdata.ids.port_id);
26922686 	if (time_after(jiffies,
26932687 		       fip->sol_time + msecs_to_jiffies(FIP_VN_ANN_WAIT)))
26942688 		fcoe_ctlr_vn_send_claim(fip);
....@@ -2773,19 +2767,19 @@
27732767 	mutex_lock(&fip->ctlr_mutex);
27742768 	switch (sub) {
27752769 	case FIP_SC_VN_PROBE_REQ:
2776
-		fcoe_ctlr_vn_probe_req(fip, &frport.rdata);
2770
+		fcoe_ctlr_vn_probe_req(fip, &frport);
27772771 		break;
27782772 	case FIP_SC_VN_PROBE_REP:
2779
-		fcoe_ctlr_vn_probe_reply(fip, &frport.rdata);
2773
+		fcoe_ctlr_vn_probe_reply(fip, &frport);
27802774 		break;
27812775 	case FIP_SC_VN_CLAIM_NOTIFY:
2782
-		fcoe_ctlr_vn_claim_notify(fip, &frport.rdata);
2776
+		fcoe_ctlr_vn_claim_notify(fip, &frport);
27832777 		break;
27842778 	case FIP_SC_VN_CLAIM_REP:
2785
-		fcoe_ctlr_vn_claim_resp(fip, &frport.rdata);
2779
+		fcoe_ctlr_vn_claim_resp(fip, &frport);
27862780 		break;
27872781 	case FIP_SC_VN_BEACON:
2788
-		fcoe_ctlr_vn_beacon(fip, &frport.rdata);
2782
+		fcoe_ctlr_vn_beacon(fip, &frport);
27892783 		break;
27902784 	default:
27912785 		LIBFCOE_FIP_DBG(fip, "vn_recv unknown subcode %d\n", sub);
....@@ -2802,7 +2796,7 @@
28022796  * fcoe_ctlr_vlan_parse - parse vlan discovery request or response
28032797  * @fip: The FCoE controller
28042798  * @skb: incoming packet
2805
- * @rdata: buffer for resulting parsed VLAN entry plus fcoe_rport
2799
+ * @frport: parsed FCoE rport from the probe request
28062800  *
28072801  * Returns non-zero error number on error.
28082802  * Does not consume the packet.
....@@ -2901,7 +2895,6 @@
29012895  * @fip: The FCoE controller
29022896  * @sub: sub-opcode for vlan notification or vn2vn vlan notification
29032897  * @dest: The destination Ethernet MAC address
2904
- * @min_len: minimum size of the Ethernet payload to be sent
29052898  */
29062899 static void fcoe_ctlr_vlan_send(struct fcoe_ctlr *fip,
29072900 			      enum fip_vlan_subcode sub,
....@@ -2961,13 +2954,13 @@
29612954 /**
29622955  * fcoe_ctlr_vlan_disk_reply() - send FIP VLAN Discovery Notification.
29632956  * @fip: The FCoE controller
2957
+ * @frport: The newly-parsed FCoE rport from the Discovery Request
29642958  *
29652959  * Called with ctlr_mutex held.
29662960  */
29672961 static void fcoe_ctlr_vlan_disc_reply(struct fcoe_ctlr *fip,
2968
-				      struct fc_rport_priv *rdata)
2962
+				      struct fcoe_rport *frport)
29692963 {
2970
-	struct fcoe_rport *frport = fcoe_ctlr_rport(rdata);
29712964 	enum fip_vlan_subcode sub = FIP_SC_VL_NOTE;
29722965 
29732966 	if (fip->mode == FIP_MODE_VN2VN)
....@@ -2978,9 +2971,8 @@
29782971 
29792972 /**
29802973  * fcoe_ctlr_vlan_recv - vlan request receive handler for VN2VN mode.
2981
- * @lport: The local port
2982
- * @fp: The received frame
2983
- *
2974
+ * @fip: The FCoE controller
2975
+ * @skb: The received FIP packet
29842976  */
29852977 static int fcoe_ctlr_vlan_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
29862978 {
....@@ -2998,7 +2990,7 @@
29982990 	}
29992991 	mutex_lock(&fip->ctlr_mutex);
30002992 	if (sub == FIP_SC_VL_REQ)
3001
-		fcoe_ctlr_vlan_disc_reply(fip, &frport.rdata);
2993
+		fcoe_ctlr_vlan_disc_reply(fip, &frport);
30022994 	mutex_unlock(&fip->ctlr_mutex);
30032995 
30042996 drop:
....@@ -3024,9 +3016,8 @@
30243016 	fc_frame_free(fp);
30253017 }
30263018 
3027
-/**
3028
- * fcoe_ctlr_disc_recv - start discovery for VN2VN mode.
3029
- * @fip: The FCoE controller
3019
+/*
3020
+ * fcoe_ctlr_disc_start - start discovery for VN2VN mode.
30303021  *
30313022  * This sets a flag indicating that remote ports should be created
30323023  * and started for the peers we discover.  We use the disc_callback