2 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
4 * Copyright (c) 2012, 2017, Intel Corporation.
6 * Author: Zach Brown <zab@zabbo.net>
7 * Author: Peter J. Braam <braam@clusterfs.com>
8 * Author: Phil Schwan <phil@clusterfs.com>
9 * Author: Eric Barton <eric@bartonsoftware.com>
11 * This file is part of Lustre, https://wiki.whamcloud.com/
13 * Portals is free software; you can redistribute it and/or
14 * modify it under the terms of version 2 of the GNU General Public
15 * License as published by the Free Software Foundation.
17 * Portals is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with Portals; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 * pro_send_hello : send hello message
32 * pro_recv_hello : receive hello message
33 * pro_pack : pack message header
34 * pro_unpack : unpack message header
35 * pro_queue_tx_zcack() : Called holding BH lock: kss_lock
36 * return 1 if ACK is piggybacked, otherwise return 0
37 * pro_queue_tx_msg() : Called holding BH lock: kss_lock
38 * return the ACK that piggybacked by my message, or NULL
39 * pro_handle_zcreq() : handler of incoming ZC-REQ
40 * pro_handle_zcack() : handler of incoming ZC-ACK
41 * pro_match_tx() : Called holding glock
44 static struct ksock_tx *
45 ksocknal_queue_tx_msg_v1(struct ksock_conn *conn, struct ksock_tx *tx_msg)
47 /* V1.x, just enqueue it */
48 list_add_tail(&tx_msg->tx_list, &conn->ksnc_tx_queue);
53 ksocknal_next_tx_carrier(struct ksock_conn *conn)
55 struct ksock_tx *tx = conn->ksnc_tx_carrier;
57 /* Called holding BH lock: conn->ksnc_scheduler->kss_lock */
58 LASSERT(!list_empty(&conn->ksnc_tx_queue));
61 /* Next TX that can carry ZC-ACK or LNet message */
62 if (tx->tx_list.next == &conn->ksnc_tx_queue) {
63 /* no more packets queued */
64 conn->ksnc_tx_carrier = NULL;
66 conn->ksnc_tx_carrier = list_next_entry(tx, tx_list);
67 LASSERT(conn->ksnc_tx_carrier->tx_msg.ksm_type ==
73 ksocknal_queue_tx_zcack_v2(struct ksock_conn *conn,
74 struct ksock_tx *tx_ack, __u64 cookie)
76 struct ksock_tx *tx = conn->ksnc_tx_carrier;
78 LASSERT (tx_ack == NULL ||
79 tx_ack->tx_msg.ksm_type == KSOCK_MSG_NOOP);
82 * Enqueue or piggyback tx_ack / cookie
83 * . no tx can piggyback cookie of tx_ack (or cookie), just
84 * enqueue the tx_ack (if tx_ack != NUL) and return NULL.
85 * . There is tx can piggyback cookie of tx_ack (or cookie),
86 * piggyback the cookie and return the tx.
90 list_add_tail(&tx_ack->tx_list,
91 &conn->ksnc_tx_queue);
92 conn->ksnc_tx_carrier = tx_ack;
97 if (tx->tx_msg.ksm_type == KSOCK_MSG_NOOP) {
98 /* tx is noop zc-ack, can't piggyback zc-ack cookie */
100 list_add_tail(&tx_ack->tx_list,
101 &conn->ksnc_tx_queue);
105 LASSERT(tx->tx_msg.ksm_type == KSOCK_MSG_LNET);
106 LASSERT(tx->tx_msg.ksm_zc_cookies[1] == 0);
109 cookie = tx_ack->tx_msg.ksm_zc_cookies[1];
111 /* piggyback the zc-ack cookie */
112 tx->tx_msg.ksm_zc_cookies[1] = cookie;
113 /* move on to the next TX which can carry cookie */
114 ksocknal_next_tx_carrier(conn);
119 static struct ksock_tx *
120 ksocknal_queue_tx_msg_v2(struct ksock_conn *conn, struct ksock_tx *tx_msg)
122 struct ksock_tx *tx = conn->ksnc_tx_carrier;
126 * . If there is no NOOP on the connection, just enqueue
127 * tx_msg and return NULL
128 * . If there is NOOP on the connection, piggyback the cookie
129 * and replace the NOOP tx, and return the NOOP tx.
131 if (tx == NULL) { /* nothing on queue */
132 list_add_tail(&tx_msg->tx_list, &conn->ksnc_tx_queue);
133 conn->ksnc_tx_carrier = tx_msg;
137 if (tx->tx_msg.ksm_type == KSOCK_MSG_LNET) { /* nothing to carry */
138 list_add_tail(&tx_msg->tx_list, &conn->ksnc_tx_queue);
142 LASSERT (tx->tx_msg.ksm_type == KSOCK_MSG_NOOP);
144 /* There is a noop zc-ack can be piggybacked */
145 tx_msg->tx_msg.ksm_zc_cookies[1] = tx->tx_msg.ksm_zc_cookies[1];
146 ksocknal_next_tx_carrier(conn);
148 /* use new_tx to replace the noop zc-ack packet */
149 list_splice(&tx->tx_list, &tx_msg->tx_list);
155 ksocknal_queue_tx_zcack_v3(struct ksock_conn *conn,
156 struct ksock_tx *tx_ack, __u64 cookie)
160 if (conn->ksnc_type != SOCKLND_CONN_ACK)
161 return ksocknal_queue_tx_zcack_v2(conn, tx_ack, cookie);
163 /* non-blocking ZC-ACK (to router) */
164 LASSERT (tx_ack == NULL ||
165 tx_ack->tx_msg.ksm_type == KSOCK_MSG_NOOP);
167 if ((tx = conn->ksnc_tx_carrier) == NULL) {
168 if (tx_ack != NULL) {
169 list_add_tail(&tx_ack->tx_list,
170 &conn->ksnc_tx_queue);
171 conn->ksnc_tx_carrier = tx_ack;
176 /* conn->ksnc_tx_carrier != NULL */
179 cookie = tx_ack->tx_msg.ksm_zc_cookies[1];
181 if (cookie == SOCKNAL_KEEPALIVE_PING) /* ignore keepalive PING */
184 if (tx->tx_msg.ksm_zc_cookies[1] == SOCKNAL_KEEPALIVE_PING) {
185 /* replace the keepalive PING with a real ACK */
186 LASSERT (tx->tx_msg.ksm_zc_cookies[0] == 0);
187 tx->tx_msg.ksm_zc_cookies[1] = cookie;
191 if (cookie == tx->tx_msg.ksm_zc_cookies[0] ||
192 cookie == tx->tx_msg.ksm_zc_cookies[1]) {
193 CWARN("%s: duplicated ZC cookie: %llu\n",
194 libcfs_idstr(&conn->ksnc_peer->ksnp_id), cookie);
195 return 1; /* XXX return error in the future */
198 if (tx->tx_msg.ksm_zc_cookies[0] == 0) {
199 /* NOOP tx has only one ZC-ACK cookie, can carry at least one more */
200 if (tx->tx_msg.ksm_zc_cookies[1] > cookie) {
201 tx->tx_msg.ksm_zc_cookies[0] = tx->tx_msg.ksm_zc_cookies[1];
202 tx->tx_msg.ksm_zc_cookies[1] = cookie;
204 tx->tx_msg.ksm_zc_cookies[0] = cookie;
207 if (tx->tx_msg.ksm_zc_cookies[0] - tx->tx_msg.ksm_zc_cookies[1] > 2) {
208 /* not likely to carry more ACKs, skip it to simplify logic */
209 ksocknal_next_tx_carrier(conn);
215 /* takes two or more cookies already */
217 if (tx->tx_msg.ksm_zc_cookies[0] > tx->tx_msg.ksm_zc_cookies[1]) {
220 /* two separated cookies: (a+2, a) or (a+1, a) */
221 LASSERT (tx->tx_msg.ksm_zc_cookies[0] -
222 tx->tx_msg.ksm_zc_cookies[1] <= 2);
224 if (tx->tx_msg.ksm_zc_cookies[0] -
225 tx->tx_msg.ksm_zc_cookies[1] == 2) {
226 if (cookie == tx->tx_msg.ksm_zc_cookies[1] + 1)
228 } else if (cookie == tx->tx_msg.ksm_zc_cookies[1] - 1) {
229 tmp = tx->tx_msg.ksm_zc_cookies[1];
230 } else if (cookie == tx->tx_msg.ksm_zc_cookies[0] + 1) {
231 tmp = tx->tx_msg.ksm_zc_cookies[0];
235 /* range of cookies */
236 tx->tx_msg.ksm_zc_cookies[0] = tmp - 1;
237 tx->tx_msg.ksm_zc_cookies[1] = tmp + 1;
242 /* ksm_zc_cookies[0] < ksm_zc_cookies[1], it is a range
245 if (cookie >= tx->tx_msg.ksm_zc_cookies[0] &&
246 cookie <= tx->tx_msg.ksm_zc_cookies[1]) {
247 CWARN("%s: duplicated ZC cookie: %llu\n",
248 libcfs_idstr(&conn->ksnc_peer->ksnp_id),
250 return 1; /* XXX: return error in the future */
253 if (cookie == tx->tx_msg.ksm_zc_cookies[1] + 1) {
254 tx->tx_msg.ksm_zc_cookies[1] = cookie;
258 if (cookie == tx->tx_msg.ksm_zc_cookies[0] - 1) {
259 tx->tx_msg.ksm_zc_cookies[0] = cookie;
264 /* failed to piggyback ZC-ACK */
265 if (tx_ack != NULL) {
266 list_add_tail(&tx_ack->tx_list, &conn->ksnc_tx_queue);
267 /* the next tx can piggyback at least 1 ACK */
268 ksocknal_next_tx_carrier(conn);
275 ksocknal_match_tx(struct ksock_conn *conn, struct ksock_tx *tx, int nonblk)
279 #if SOCKNAL_VERSION_DEBUG
280 if (!*ksocknal_tunables.ksnd_typed_conns)
281 return SOCKNAL_MATCH_YES;
284 if (tx == NULL || tx->tx_lnetmsg == NULL) {
286 nob = offsetof(struct ksock_msg, ksm_u);
288 nob = tx->tx_lnetmsg->msg_len +
289 ((conn->ksnc_proto == &ksocknal_protocol_v1x) ?
290 sizeof(struct lnet_hdr) : sizeof(struct ksock_msg));
293 /* default checking for typed connection */
294 switch (conn->ksnc_type) {
296 CERROR("ksnc_type bad: %u\n", conn->ksnc_type);
298 case SOCKLND_CONN_ANY:
299 return SOCKNAL_MATCH_YES;
301 case SOCKLND_CONN_BULK_IN:
302 return SOCKNAL_MATCH_MAY;
304 case SOCKLND_CONN_BULK_OUT:
305 if (nob < *ksocknal_tunables.ksnd_min_bulk)
306 return SOCKNAL_MATCH_MAY;
308 return SOCKNAL_MATCH_YES;
310 case SOCKLND_CONN_CONTROL:
311 if (nob >= *ksocknal_tunables.ksnd_min_bulk)
312 return SOCKNAL_MATCH_MAY;
314 return SOCKNAL_MATCH_YES;
319 ksocknal_match_tx_v3(struct ksock_conn *conn, struct ksock_tx *tx, int nonblk)
323 if (tx == NULL || tx->tx_lnetmsg == NULL)
324 nob = offsetof(struct ksock_msg, ksm_u);
326 nob = tx->tx_lnetmsg->msg_len + sizeof(struct ksock_msg);
328 switch (conn->ksnc_type) {
330 CERROR("ksnc_type bad: %u\n", conn->ksnc_type);
332 case SOCKLND_CONN_ANY:
333 return SOCKNAL_MATCH_NO;
335 case SOCKLND_CONN_ACK:
337 return SOCKNAL_MATCH_YES;
338 else if (tx == NULL || tx->tx_lnetmsg == NULL)
339 return SOCKNAL_MATCH_MAY;
341 return SOCKNAL_MATCH_NO;
343 case SOCKLND_CONN_BULK_OUT:
345 return SOCKNAL_MATCH_NO;
346 else if (nob < *ksocknal_tunables.ksnd_min_bulk)
347 return SOCKNAL_MATCH_MAY;
349 return SOCKNAL_MATCH_YES;
351 case SOCKLND_CONN_CONTROL:
353 return SOCKNAL_MATCH_NO;
354 else if (nob >= *ksocknal_tunables.ksnd_min_bulk)
355 return SOCKNAL_MATCH_MAY;
357 return SOCKNAL_MATCH_YES;
361 /* (Sink) handle incoming ZC request from sender */
363 ksocknal_handle_zcreq(struct ksock_conn *c, __u64 cookie, int remote)
365 struct ksock_peer_ni *peer_ni = c->ksnc_peer;
366 struct ksock_conn *conn;
370 read_lock(&ksocknal_data.ksnd_global_lock);
372 conn = ksocknal_find_conn_locked(peer_ni, NULL, !!remote);
374 struct ksock_sched *sched = conn->ksnc_scheduler;
376 LASSERT(conn->ksnc_proto->pro_queue_tx_zcack != NULL);
378 spin_lock_bh(&sched->kss_lock);
380 rc = conn->ksnc_proto->pro_queue_tx_zcack(conn, NULL, cookie);
382 spin_unlock_bh(&sched->kss_lock);
384 if (rc) { /* piggybacked */
385 read_unlock(&ksocknal_data.ksnd_global_lock);
390 read_unlock(&ksocknal_data.ksnd_global_lock);
392 /* ACK connection is not ready, or can't piggyback the ACK */
393 tx = ksocknal_alloc_tx_noop(cookie, !!remote);
397 rc = ksocknal_launch_packet(peer_ni->ksnp_ni, tx, &peer_ni->ksnp_id);
401 ksocknal_free_tx(tx);
405 /* (Sender) handle ZC_ACK from sink */
407 ksocknal_handle_zcack(struct ksock_conn *conn, __u64 cookie1, __u64 cookie2)
409 struct ksock_peer_ni *peer_ni = conn->ksnc_peer;
411 struct ksock_tx *tmp;
418 count = (cookie1 > cookie2) ? 2 : (cookie2 - cookie1 + 1);
420 if (cookie2 == SOCKNAL_KEEPALIVE_PING &&
421 conn->ksnc_proto == &ksocknal_protocol_v3x) {
422 /* keepalive PING for V3.x, just ignore it */
423 return count == 1 ? 0 : -EPROTO;
426 spin_lock(&peer_ni->ksnp_lock);
428 list_for_each_entry_safe(tx, tmp, &peer_ni->ksnp_zc_req_list,
430 __u64 c = tx->tx_msg.ksm_zc_cookies[0];
432 if (c == cookie1 || c == cookie2 || (cookie1 < c && c < cookie2)) {
433 tx->tx_msg.ksm_zc_cookies[0] = 0;
434 list_move(&tx->tx_zc_list, &zlist);
441 spin_unlock(&peer_ni->ksnp_lock);
443 while ((tx = list_first_entry_or_null(&zlist, struct ksock_tx,
444 tx_zc_list)) != NULL) {
445 list_del(&tx->tx_zc_list);
446 ksocknal_tx_decref(tx);
449 return count == 0 ? 0 : -EPROTO;
453 ksocknal_send_hello_v1(struct ksock_conn *conn, struct ksock_hello_msg *hello)
455 struct socket *sock = conn->ksnc_sock;
456 struct lnet_hdr *hdr;
457 struct lnet_magicversion *hmv;
461 BUILD_BUG_ON(sizeof(struct lnet_magicversion) !=
462 offsetof(struct lnet_hdr, src_nid));
464 LIBCFS_ALLOC(hdr, sizeof(*hdr));
466 CERROR("Can't allocate struct lnet_hdr\n");
470 hmv = (struct lnet_magicversion *)&hdr->dest_nid;
472 /* Re-organize V2.x message header to V1.x (struct lnet_hdr)
473 * header and send out */
474 hmv->magic = cpu_to_le32 (LNET_PROTO_TCP_MAGIC);
475 hmv->version_major = cpu_to_le16 (KSOCK_PROTO_V1_MAJOR);
476 hmv->version_minor = cpu_to_le16 (KSOCK_PROTO_V1_MINOR);
478 if (the_lnet.ln_testprotocompat) {
479 /* single-shot proto check */
480 if (test_and_clear_bit(0, &the_lnet.ln_testprotocompat))
481 hmv->version_major++; /* just different! */
483 if (test_and_clear_bit(1, &the_lnet.ln_testprotocompat))
484 hmv->magic = LNET_PROTO_MAGIC;
487 hdr->src_nid = cpu_to_le64 (hello->kshm_src_nid);
488 hdr->src_pid = cpu_to_le32 (hello->kshm_src_pid);
489 hdr->type = cpu_to_le32 (LNET_MSG_HELLO);
490 hdr->payload_length = cpu_to_le32 (hello->kshm_nips * sizeof(__u32));
491 hdr->msg.hello.type = cpu_to_le32 (hello->kshm_ctype);
492 hdr->msg.hello.incarnation = cpu_to_le64 (hello->kshm_src_incarnation);
494 rc = lnet_sock_write(sock, hdr, sizeof(*hdr), lnet_acceptor_timeout());
496 CNETERR("Error %d sending HELLO hdr to %pISp\n",
497 rc, &conn->ksnc_peeraddr);
501 if (hello->kshm_nips == 0)
504 for (i = 0; i < (int) hello->kshm_nips; i++) {
505 hello->kshm_ips[i] = __cpu_to_le32 (hello->kshm_ips[i]);
508 rc = lnet_sock_write(sock, hello->kshm_ips,
509 hello->kshm_nips * sizeof(__u32),
510 lnet_acceptor_timeout());
512 CNETERR("Error %d sending HELLO payload (%d) to %pISp\n",
513 rc, hello->kshm_nips,
514 &conn->ksnc_peeraddr);
517 LIBCFS_FREE(hdr, sizeof(*hdr));
523 ksocknal_send_hello_v2(struct ksock_conn *conn, struct ksock_hello_msg *hello)
525 struct socket *sock = conn->ksnc_sock;
528 hello->kshm_magic = LNET_PROTO_MAGIC;
529 hello->kshm_version = conn->ksnc_proto->pro_version;
531 if (the_lnet.ln_testprotocompat) {
532 /* single-shot proto check */
533 if (test_and_clear_bit(0, &the_lnet.ln_testprotocompat))
534 hello->kshm_version++; /* just different! */
537 rc = lnet_sock_write(sock, hello, offsetof(struct ksock_hello_msg, kshm_ips),
538 lnet_acceptor_timeout());
541 CNETERR("Error %d sending HELLO hdr to %pISp\n",
542 rc, &conn->ksnc_peeraddr);
546 if (hello->kshm_nips == 0)
549 rc = lnet_sock_write(sock, hello->kshm_ips,
550 hello->kshm_nips * sizeof(__u32),
551 lnet_acceptor_timeout());
553 CNETERR("Error %d sending HELLO payload (%d) to %pISp\n", rc,
555 &conn->ksnc_peeraddr);
562 ksocknal_recv_hello_v1(struct ksock_conn *conn, struct ksock_hello_msg *hello,
565 struct socket *sock = conn->ksnc_sock;
566 struct lnet_hdr *hdr;
570 LIBCFS_ALLOC(hdr, sizeof(*hdr));
572 CERROR("Can't allocate struct lnet_hdr\n");
576 rc = lnet_sock_read(sock, &hdr->src_nid,
577 sizeof(*hdr) - offsetof(struct lnet_hdr, src_nid),
580 CERROR("Error %d reading rest of HELLO hdr from %pIS\n",
581 rc, &conn->ksnc_peeraddr);
582 LASSERT(rc < 0 && rc != -EALREADY);
586 /* ...and check we got what we expected */
587 if (hdr->type != cpu_to_le32 (LNET_MSG_HELLO)) {
588 CERROR("Expecting a HELLO hdr, but got type %d from %pIS\n",
589 le32_to_cpu(hdr->type),
590 &conn->ksnc_peeraddr);
595 hello->kshm_src_nid = le64_to_cpu (hdr->src_nid);
596 hello->kshm_src_pid = le32_to_cpu (hdr->src_pid);
597 hello->kshm_src_incarnation = le64_to_cpu (hdr->msg.hello.incarnation);
598 hello->kshm_ctype = le32_to_cpu (hdr->msg.hello.type);
599 hello->kshm_nips = le32_to_cpu (hdr->payload_length) /
602 if (hello->kshm_nips > LNET_INTERFACES_NUM) {
603 CERROR("Bad nips %d from ip %pIS\n",
604 hello->kshm_nips, &conn->ksnc_peeraddr);
609 if (hello->kshm_nips == 0)
612 rc = lnet_sock_read(sock, hello->kshm_ips,
613 hello->kshm_nips * sizeof(__u32), timeout);
615 CERROR("Error %d reading IPs from ip %pIS\n",
616 rc, &conn->ksnc_peeraddr);
617 LASSERT(rc < 0 && rc != -EALREADY);
621 for (i = 0; i < (int) hello->kshm_nips; i++) {
622 hello->kshm_ips[i] = __le32_to_cpu(hello->kshm_ips[i]);
624 if (hello->kshm_ips[i] == 0) {
625 CERROR("Zero IP[%d] from ip %pIS\n",
626 i, &conn->ksnc_peeraddr);
632 LIBCFS_FREE(hdr, sizeof(*hdr));
638 ksocknal_recv_hello_v2(struct ksock_conn *conn, struct ksock_hello_msg *hello,
641 struct socket *sock = conn->ksnc_sock;
645 if (hello->kshm_magic == LNET_PROTO_MAGIC)
650 rc = lnet_sock_read(sock, &hello->kshm_src_nid,
651 offsetof(struct ksock_hello_msg, kshm_ips) -
652 offsetof(struct ksock_hello_msg, kshm_src_nid),
655 CERROR("Error %d reading HELLO from %pIS\n",
656 rc, &conn->ksnc_peeraddr);
657 LASSERT(rc < 0 && rc != -EALREADY);
661 if (conn->ksnc_flip) {
662 __swab32s(&hello->kshm_src_pid);
663 __swab64s(&hello->kshm_src_nid);
664 __swab32s(&hello->kshm_dst_pid);
665 __swab64s(&hello->kshm_dst_nid);
666 __swab64s(&hello->kshm_src_incarnation);
667 __swab64s(&hello->kshm_dst_incarnation);
668 __swab32s(&hello->kshm_ctype);
669 __swab32s(&hello->kshm_nips);
672 if (hello->kshm_nips > LNET_INTERFACES_NUM) {
673 CERROR("Bad nips %d from ip %pIS\n",
674 hello->kshm_nips, &conn->ksnc_peeraddr);
678 if (hello->kshm_nips == 0)
681 rc = lnet_sock_read(sock, hello->kshm_ips,
682 hello->kshm_nips * sizeof(__u32), timeout);
684 CERROR("Error %d reading IPs from ip %pIS\n",
685 rc, &conn->ksnc_peeraddr);
686 LASSERT(rc < 0 && rc != -EALREADY);
690 for (i = 0; i < (int) hello->kshm_nips; i++) {
692 __swab32s(&hello->kshm_ips[i]);
694 if (hello->kshm_ips[i] == 0) {
695 CERROR("Zero IP[%d] from ip %pIS\n",
696 i, &conn->ksnc_peeraddr);
705 ksocknal_pack_msg_v1(struct ksock_tx *tx)
707 /* V1.x has no KSOCK_MSG_NOOP */
708 LASSERT(tx->tx_msg.ksm_type != KSOCK_MSG_NOOP);
709 LASSERT(tx->tx_lnetmsg != NULL);
711 tx->tx_hdr.iov_base = (void *)&tx->tx_lnetmsg->msg_hdr;
712 tx->tx_hdr.iov_len = sizeof(struct lnet_hdr);
714 tx->tx_nob = tx->tx_lnetmsg->msg_len + sizeof(struct lnet_hdr);
715 tx->tx_resid = tx->tx_nob;
719 ksocknal_pack_msg_v2(struct ksock_tx *tx)
721 tx->tx_hdr.iov_base = (void *)&tx->tx_msg;
723 if (tx->tx_lnetmsg != NULL) {
724 LASSERT(tx->tx_msg.ksm_type != KSOCK_MSG_NOOP);
726 tx->tx_msg.ksm_u.lnetmsg.ksnm_hdr = tx->tx_lnetmsg->msg_hdr;
727 tx->tx_hdr.iov_len = sizeof(struct ksock_msg);
728 tx->tx_resid = tx->tx_nob = sizeof(struct ksock_msg) + tx->tx_lnetmsg->msg_len;
730 LASSERT(tx->tx_msg.ksm_type == KSOCK_MSG_NOOP);
732 tx->tx_hdr.iov_len = offsetof(struct ksock_msg,
733 ksm_u.lnetmsg.ksnm_hdr);
734 tx->tx_resid = tx->tx_nob = offsetof(struct ksock_msg, ksm_u.lnetmsg.ksnm_hdr);
736 /* Don't checksum before start sending, because packet can be piggybacked with ACK */
740 ksocknal_unpack_msg_v1(struct ksock_msg *msg)
743 msg->ksm_type = KSOCK_MSG_LNET;
744 msg->ksm_zc_cookies[0] = msg->ksm_zc_cookies[1] = 0;
748 ksocknal_unpack_msg_v2(struct ksock_msg *msg)
750 return; /* Do nothing */
753 const struct ksock_proto ksocknal_protocol_v1x =
755 .pro_version = KSOCK_PROTO_V1,
756 .pro_send_hello = ksocknal_send_hello_v1,
757 .pro_recv_hello = ksocknal_recv_hello_v1,
758 .pro_pack = ksocknal_pack_msg_v1,
759 .pro_unpack = ksocknal_unpack_msg_v1,
760 .pro_queue_tx_msg = ksocknal_queue_tx_msg_v1,
761 .pro_handle_zcreq = NULL,
762 .pro_handle_zcack = NULL,
763 .pro_queue_tx_zcack = NULL,
764 .pro_match_tx = ksocknal_match_tx
767 const struct ksock_proto ksocknal_protocol_v2x =
769 .pro_version = KSOCK_PROTO_V2,
770 .pro_send_hello = ksocknal_send_hello_v2,
771 .pro_recv_hello = ksocknal_recv_hello_v2,
772 .pro_pack = ksocknal_pack_msg_v2,
773 .pro_unpack = ksocknal_unpack_msg_v2,
774 .pro_queue_tx_msg = ksocknal_queue_tx_msg_v2,
775 .pro_queue_tx_zcack = ksocknal_queue_tx_zcack_v2,
776 .pro_handle_zcreq = ksocknal_handle_zcreq,
777 .pro_handle_zcack = ksocknal_handle_zcack,
778 .pro_match_tx = ksocknal_match_tx
781 const struct ksock_proto ksocknal_protocol_v3x =
783 .pro_version = KSOCK_PROTO_V3,
784 .pro_send_hello = ksocknal_send_hello_v2,
785 .pro_recv_hello = ksocknal_recv_hello_v2,
786 .pro_pack = ksocknal_pack_msg_v2,
787 .pro_unpack = ksocknal_unpack_msg_v2,
788 .pro_queue_tx_msg = ksocknal_queue_tx_msg_v2,
789 .pro_queue_tx_zcack = ksocknal_queue_tx_zcack_v3,
790 .pro_handle_zcreq = ksocknal_handle_zcreq,
791 .pro_handle_zcack = ksocknal_handle_zcack,
792 .pro_match_tx = ksocknal_match_tx_v3