2 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
4 * Copyright (c) 2012, 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 Portals, http://www.sf.net/projects/sandiaportals/
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
45 ksocknal_queue_tx_msg_v1(ksock_conn_t *conn, ksock_tx_t *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(ksock_conn_t *conn)
55 ksock_tx_t *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_entry(tx->tx_list.next,
68 LASSERT(conn->ksnc_tx_carrier->tx_msg.ksm_type == tx->tx_msg.ksm_type);
73 ksocknal_queue_tx_zcack_v2(ksock_conn_t *conn,
74 ksock_tx_t *tx_ack, __u64 cookie)
76 ksock_tx_t *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);
120 ksocknal_queue_tx_msg_v2(ksock_conn_t *conn, ksock_tx_t *tx_msg)
122 ksock_tx_t *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_add(&tx_msg->tx_list, &tx->tx_list);
150 list_del(&tx->tx_list);
156 ksocknal_queue_tx_zcack_v3(ksock_conn_t *conn,
157 ksock_tx_t *tx_ack, __u64 cookie)
161 if (conn->ksnc_type != SOCKLND_CONN_ACK)
162 return ksocknal_queue_tx_zcack_v2(conn, tx_ack, cookie);
164 /* non-blocking ZC-ACK (to router) */
165 LASSERT(tx_ack == NULL ||
166 tx_ack->tx_msg.ksm_type == KSOCK_MSG_NOOP);
168 tx = conn->ksnc_tx_carrier;
170 if (tx_ack != NULL) {
171 list_add_tail(&tx_ack->tx_list,
172 &conn->ksnc_tx_queue);
173 conn->ksnc_tx_carrier = tx_ack;
178 /* conn->ksnc_tx_carrier != NULL */
181 cookie = tx_ack->tx_msg.ksm_zc_cookies[1];
183 if (cookie == SOCKNAL_KEEPALIVE_PING) /* ignore keepalive PING */
186 if (tx->tx_msg.ksm_zc_cookies[1] == SOCKNAL_KEEPALIVE_PING) {
187 /* replace the keepalive PING with a real ACK */
188 LASSERT(tx->tx_msg.ksm_zc_cookies[0] == 0);
189 tx->tx_msg.ksm_zc_cookies[1] = cookie;
193 if (cookie == tx->tx_msg.ksm_zc_cookies[0] ||
194 cookie == tx->tx_msg.ksm_zc_cookies[1]) {
195 CWARN("%s: duplicated ZC cookie: %llu\n",
196 libcfs_id2str(conn->ksnc_peer->ksnp_id), cookie);
197 return 1; /* XXX return error in the future */
200 if (tx->tx_msg.ksm_zc_cookies[0] == 0) {
201 /* NOOP tx has only one ZC-ACK cookie, can carry at least one more */
202 if (tx->tx_msg.ksm_zc_cookies[1] > cookie) {
203 tx->tx_msg.ksm_zc_cookies[0] = tx->tx_msg.ksm_zc_cookies[1];
204 tx->tx_msg.ksm_zc_cookies[1] = cookie;
206 tx->tx_msg.ksm_zc_cookies[0] = cookie;
209 if (tx->tx_msg.ksm_zc_cookies[0] - tx->tx_msg.ksm_zc_cookies[1] > 2) {
210 /* not likely to carry more ACKs, skip it to simplify logic */
211 ksocknal_next_tx_carrier(conn);
217 /* takes two or more cookies already */
219 if (tx->tx_msg.ksm_zc_cookies[0] > tx->tx_msg.ksm_zc_cookies[1]) {
222 /* two separated cookies: (a+2, a) or (a+1, a) */
223 LASSERT(tx->tx_msg.ksm_zc_cookies[0] -
224 tx->tx_msg.ksm_zc_cookies[1] <= 2);
226 if (tx->tx_msg.ksm_zc_cookies[0] -
227 tx->tx_msg.ksm_zc_cookies[1] == 2) {
228 if (cookie == tx->tx_msg.ksm_zc_cookies[1] + 1)
230 } else if (cookie == tx->tx_msg.ksm_zc_cookies[1] - 1) {
231 tmp = tx->tx_msg.ksm_zc_cookies[1];
232 } else if (cookie == tx->tx_msg.ksm_zc_cookies[0] + 1) {
233 tmp = tx->tx_msg.ksm_zc_cookies[0];
237 /* range of cookies */
238 tx->tx_msg.ksm_zc_cookies[0] = tmp - 1;
239 tx->tx_msg.ksm_zc_cookies[1] = tmp + 1;
244 /* ksm_zc_cookies[0] < ksm_zc_cookies[1], it is range of cookies */
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_id2str(conn->ksnc_peer->ksnp_id), cookie);
249 return 1; /* XXX: return error in the future */
252 if (cookie == tx->tx_msg.ksm_zc_cookies[1] + 1) {
253 tx->tx_msg.ksm_zc_cookies[1] = cookie;
257 if (cookie == tx->tx_msg.ksm_zc_cookies[0] - 1) {
258 tx->tx_msg.ksm_zc_cookies[0] = cookie;
263 /* failed to piggyback ZC-ACK */
264 if (tx_ack != NULL) {
265 list_add_tail(&tx_ack->tx_list, &conn->ksnc_tx_queue);
266 /* the next tx can piggyback at least 1 ACK */
267 ksocknal_next_tx_carrier(conn);
274 ksocknal_match_tx(ksock_conn_t *conn, ksock_tx_t *tx, int nonblk)
278 #if SOCKNAL_VERSION_DEBUG
279 if (!*ksocknal_tunables.ksnd_typed_conns)
280 return SOCKNAL_MATCH_YES;
283 if (tx == NULL || tx->tx_lnetmsg == NULL) {
285 nob = offsetof(ksock_msg_t, ksm_u);
287 nob = tx->tx_lnetmsg->msg_len +
288 ((conn->ksnc_proto == &ksocknal_protocol_v1x) ?
289 sizeof(lnet_hdr_t) : sizeof(ksock_msg_t));
292 /* default checking for typed connection */
293 switch (conn->ksnc_type) {
295 CERROR("ksnc_type bad: %u\n", conn->ksnc_type);
297 case SOCKLND_CONN_ANY:
298 return SOCKNAL_MATCH_YES;
300 case SOCKLND_CONN_BULK_IN:
301 return SOCKNAL_MATCH_MAY;
303 case SOCKLND_CONN_BULK_OUT:
304 if (nob < *ksocknal_tunables.ksnd_min_bulk)
305 return SOCKNAL_MATCH_MAY;
307 return SOCKNAL_MATCH_YES;
309 case SOCKLND_CONN_CONTROL:
310 if (nob >= *ksocknal_tunables.ksnd_min_bulk)
311 return SOCKNAL_MATCH_MAY;
313 return SOCKNAL_MATCH_YES;
318 ksocknal_match_tx_v3(ksock_conn_t *conn, ksock_tx_t *tx, int nonblk)
322 if (tx == NULL || tx->tx_lnetmsg == NULL)
323 nob = offsetof(ksock_msg_t, ksm_u);
325 nob = tx->tx_lnetmsg->msg_len + sizeof(ksock_msg_t);
327 switch (conn->ksnc_type) {
329 CERROR("ksnc_type bad: %u\n", conn->ksnc_type);
331 case SOCKLND_CONN_ANY:
332 return SOCKNAL_MATCH_NO;
334 case SOCKLND_CONN_ACK:
336 return SOCKNAL_MATCH_YES;
337 else if (tx == NULL || tx->tx_lnetmsg == NULL)
338 return SOCKNAL_MATCH_MAY;
340 return SOCKNAL_MATCH_NO;
342 case SOCKLND_CONN_BULK_OUT:
344 return SOCKNAL_MATCH_NO;
345 else if (nob < *ksocknal_tunables.ksnd_min_bulk)
346 return SOCKNAL_MATCH_MAY;
348 return SOCKNAL_MATCH_YES;
350 case SOCKLND_CONN_CONTROL:
352 return SOCKNAL_MATCH_NO;
353 else if (nob >= *ksocknal_tunables.ksnd_min_bulk)
354 return SOCKNAL_MATCH_MAY;
356 return SOCKNAL_MATCH_YES;
360 /* (Sink) handle incoming ZC request from sender */
362 ksocknal_handle_zcreq(ksock_conn_t *c, __u64 cookie, int remote)
364 ksock_peer_t *peer = c->ksnc_peer;
369 read_lock(&ksocknal_data.ksnd_global_lock);
371 conn = ksocknal_find_conn_locked(peer, NULL, !!remote);
373 ksock_sched_t *sched = conn->ksnc_scheduler;
375 LASSERT(conn->ksnc_proto->pro_queue_tx_zcack != NULL);
377 spin_lock_bh(&sched->kss_lock);
379 rc = conn->ksnc_proto->pro_queue_tx_zcack(conn, NULL, cookie);
381 spin_unlock_bh(&sched->kss_lock);
383 if (rc) { /* piggybacked */
384 read_unlock(&ksocknal_data.ksnd_global_lock);
389 read_unlock(&ksocknal_data.ksnd_global_lock);
391 /* ACK connection is not ready, or can't piggyback the ACK */
392 tx = ksocknal_alloc_tx_noop(cookie, !!remote);
396 rc = ksocknal_launch_packet(peer->ksnp_ni, tx, peer->ksnp_id);
400 ksocknal_free_tx(tx);
404 /* (Sender) handle ZC_ACK from sink */
406 ksocknal_handle_zcack(ksock_conn_t *conn, __u64 cookie1, __u64 cookie2)
408 ksock_peer_t *peer = conn->ksnc_peer;
417 count = (cookie1 > cookie2) ? 2 : (cookie2 - cookie1 + 1);
419 if (cookie2 == SOCKNAL_KEEPALIVE_PING &&
420 conn->ksnc_proto == &ksocknal_protocol_v3x) {
421 /* keepalive PING for V3.x, just ignore it */
422 return count == 1 ? 0 : -EPROTO;
425 spin_lock(&peer->ksnp_lock);
427 list_for_each_entry_safe(tx, tmp,
428 &peer->ksnp_zc_req_list, tx_zc_list) {
429 __u64 c = tx->tx_msg.ksm_zc_cookies[0];
431 if (c == cookie1 || c == cookie2 || (cookie1 < c && c < cookie2)) {
432 tx->tx_msg.ksm_zc_cookies[0] = 0;
433 list_del(&tx->tx_zc_list);
434 list_add(&tx->tx_zc_list, &zlist);
441 spin_unlock(&peer->ksnp_lock);
443 while (!list_empty(&zlist)) {
444 tx = list_entry(zlist.next, ksock_tx_t, tx_zc_list);
445 list_del(&tx->tx_zc_list);
446 ksocknal_tx_decref(tx);
449 return count == 0 ? 0 : -EPROTO;
453 ksocknal_send_hello_v1(ksock_conn_t *conn, ksock_hello_msg_t *hello)
455 struct socket *sock = conn->ksnc_sock;
457 lnet_magicversion_t *hmv;
461 CLASSERT(sizeof(lnet_magicversion_t) == offsetof(lnet_hdr_t, src_nid));
463 LIBCFS_ALLOC(hdr, sizeof(*hdr));
465 CERROR("Can't allocate lnet_hdr_t\n");
469 hmv = (lnet_magicversion_t *)&hdr->dest_nid;
471 /* Re-organize V2.x message header to V1.x (lnet_hdr_t)
472 * header and send out */
473 hmv->magic = cpu_to_le32 (LNET_PROTO_TCP_MAGIC);
474 hmv->version_major = cpu_to_le16 (KSOCK_PROTO_V1_MAJOR);
475 hmv->version_minor = cpu_to_le16 (KSOCK_PROTO_V1_MINOR);
477 if (the_lnet.ln_testprotocompat != 0) {
478 /* single-shot proto check */
480 if ((the_lnet.ln_testprotocompat & 1) != 0) {
481 hmv->version_major++; /* just different! */
482 the_lnet.ln_testprotocompat &= ~1;
484 if ((the_lnet.ln_testprotocompat & 2) != 0) {
485 hmv->magic = LNET_PROTO_MAGIC;
486 the_lnet.ln_testprotocompat &= ~2;
491 hdr->src_nid = cpu_to_le64 (hello->kshm_src_nid);
492 hdr->src_pid = cpu_to_le32 (hello->kshm_src_pid);
493 hdr->type = cpu_to_le32 (LNET_MSG_HELLO);
494 hdr->payload_length = cpu_to_le32 (hello->kshm_nips * sizeof(__u32));
495 hdr->msg.hello.type = cpu_to_le32 (hello->kshm_ctype);
496 hdr->msg.hello.incarnation = cpu_to_le64 (hello->kshm_src_incarnation);
498 rc = libcfs_sock_write(sock, hdr, sizeof(*hdr),
499 lnet_acceptor_timeout());
502 CNETERR("Error %d sending HELLO hdr to %pI4h/%d\n",
503 rc, &conn->ksnc_ipaddr, conn->ksnc_port);
507 if (hello->kshm_nips == 0)
510 for (i = 0; i < (int) hello->kshm_nips; i++) {
511 hello->kshm_ips[i] = __cpu_to_le32 (hello->kshm_ips[i]);
514 rc = libcfs_sock_write(sock, hello->kshm_ips,
515 hello->kshm_nips * sizeof(__u32),
516 lnet_acceptor_timeout());
518 CNETERR("Error %d sending HELLO payload (%d) to %pI4h/%d\n",
519 rc, hello->kshm_nips,
520 &conn->ksnc_ipaddr, conn->ksnc_port);
523 LIBCFS_FREE(hdr, sizeof(*hdr));
529 ksocknal_send_hello_v2(ksock_conn_t *conn, ksock_hello_msg_t *hello)
531 struct socket *sock = conn->ksnc_sock;
534 hello->kshm_magic = LNET_PROTO_MAGIC;
535 hello->kshm_version = conn->ksnc_proto->pro_version;
537 if (the_lnet.ln_testprotocompat != 0) {
538 /* single-shot proto check */
540 if ((the_lnet.ln_testprotocompat & 1) != 0) {
541 hello->kshm_version++; /* just different! */
542 the_lnet.ln_testprotocompat &= ~1;
547 rc = libcfs_sock_write(sock, hello, offsetof(ksock_hello_msg_t, kshm_ips),
548 lnet_acceptor_timeout());
551 CNETERR("Error %d sending HELLO hdr to %pI4h/%d\n",
552 rc, &conn->ksnc_ipaddr, conn->ksnc_port);
556 if (hello->kshm_nips == 0)
559 rc = libcfs_sock_write(sock, hello->kshm_ips,
560 hello->kshm_nips * sizeof(__u32),
561 lnet_acceptor_timeout());
563 CNETERR("Error %d sending HELLO payload (%d) to %pI4h/%d\n",
564 rc, hello->kshm_nips,
565 &conn->ksnc_ipaddr, conn->ksnc_port);
572 ksocknal_recv_hello_v1(ksock_conn_t *conn, ksock_hello_msg_t *hello,
575 struct socket *sock = conn->ksnc_sock;
580 LIBCFS_ALLOC(hdr, sizeof(*hdr));
582 CERROR("Can't allocate lnet_hdr_t\n");
586 rc = libcfs_sock_read(sock, &hdr->src_nid,
587 sizeof(*hdr) - offsetof(lnet_hdr_t, src_nid),
590 CERROR("Error %d reading rest of HELLO hdr from %pI4h\n",
591 rc, &conn->ksnc_ipaddr);
592 LASSERT(rc < 0 && rc != -EALREADY);
596 /* ...and check we got what we expected */
597 if (hdr->type != cpu_to_le32 (LNET_MSG_HELLO)) {
598 CERROR("Expecting a HELLO hdr, but got type %d from %pI4h\n",
599 le32_to_cpu(hdr->type),
605 hello->kshm_src_nid = le64_to_cpu(hdr->src_nid);
606 hello->kshm_src_pid = le32_to_cpu(hdr->src_pid);
607 hello->kshm_src_incarnation = le64_to_cpu(hdr->msg.hello.incarnation);
608 hello->kshm_ctype = le32_to_cpu(hdr->msg.hello.type);
609 hello->kshm_nips = le32_to_cpu(hdr->payload_length) /
612 if (hello->kshm_nips > LNET_MAX_INTERFACES) {
613 CERROR("Bad nips %d from ip %pI4h\n",
614 hello->kshm_nips, &conn->ksnc_ipaddr);
619 if (hello->kshm_nips == 0)
622 rc = libcfs_sock_read(sock, hello->kshm_ips,
623 hello->kshm_nips * sizeof(__u32), timeout);
625 CERROR("Error %d reading IPs from ip %pI4h\n",
626 rc, &conn->ksnc_ipaddr);
627 LASSERT(rc < 0 && rc != -EALREADY);
631 for (i = 0; i < (int) hello->kshm_nips; i++) {
632 hello->kshm_ips[i] = __le32_to_cpu(hello->kshm_ips[i]);
634 if (hello->kshm_ips[i] == 0) {
635 CERROR("Zero IP[%d] from ip %pI4h\n",
636 i, &conn->ksnc_ipaddr);
642 LIBCFS_FREE(hdr, sizeof(*hdr));
648 ksocknal_recv_hello_v2(ksock_conn_t *conn, ksock_hello_msg_t *hello, int timeout)
650 struct socket *sock = conn->ksnc_sock;
654 if (hello->kshm_magic == LNET_PROTO_MAGIC)
659 rc = libcfs_sock_read(sock, &hello->kshm_src_nid,
660 offsetof(ksock_hello_msg_t, kshm_ips) -
661 offsetof(ksock_hello_msg_t, kshm_src_nid),
664 CERROR("Error %d reading HELLO from %pI4h\n",
665 rc, &conn->ksnc_ipaddr);
666 LASSERT(rc < 0 && rc != -EALREADY);
670 if (conn->ksnc_flip) {
671 __swab32s(&hello->kshm_src_pid);
672 __swab64s(&hello->kshm_src_nid);
673 __swab32s(&hello->kshm_dst_pid);
674 __swab64s(&hello->kshm_dst_nid);
675 __swab64s(&hello->kshm_src_incarnation);
676 __swab64s(&hello->kshm_dst_incarnation);
677 __swab32s(&hello->kshm_ctype);
678 __swab32s(&hello->kshm_nips);
681 if (hello->kshm_nips > LNET_MAX_INTERFACES) {
682 CERROR("Bad nips %d from ip %pI4h\n",
683 hello->kshm_nips, &conn->ksnc_ipaddr);
687 if (hello->kshm_nips == 0)
690 rc = libcfs_sock_read(sock, hello->kshm_ips,
691 hello->kshm_nips * sizeof(__u32), timeout);
693 CERROR("Error %d reading IPs from ip %pI4h\n",
694 rc, &conn->ksnc_ipaddr);
695 LASSERT(rc < 0 && rc != -EALREADY);
699 for (i = 0; i < (int) hello->kshm_nips; i++) {
701 __swab32s(&hello->kshm_ips[i]);
703 if (hello->kshm_ips[i] == 0) {
704 CERROR("Zero IP[%d] from ip %pI4h\n",
705 i, &conn->ksnc_ipaddr);
714 ksocknal_pack_msg_v1(ksock_tx_t *tx)
716 /* V1.x has no KSOCK_MSG_NOOP */
717 LASSERT(tx->tx_msg.ksm_type != KSOCK_MSG_NOOP);
718 LASSERT(tx->tx_lnetmsg != NULL);
720 tx->tx_iov[0].iov_base = &tx->tx_lnetmsg->msg_hdr;
721 tx->tx_iov[0].iov_len = sizeof(lnet_hdr_t);
723 tx->tx_resid = tx->tx_nob = tx->tx_lnetmsg->msg_len + sizeof(lnet_hdr_t);
727 ksocknal_pack_msg_v2(ksock_tx_t *tx)
729 tx->tx_iov[0].iov_base = &tx->tx_msg;
731 if (tx->tx_lnetmsg != NULL) {
732 LASSERT(tx->tx_msg.ksm_type != KSOCK_MSG_NOOP);
734 tx->tx_msg.ksm_u.lnetmsg.ksnm_hdr = tx->tx_lnetmsg->msg_hdr;
735 tx->tx_iov[0].iov_len = sizeof(ksock_msg_t);
736 tx->tx_resid = tx->tx_nob = sizeof(ksock_msg_t) + tx->tx_lnetmsg->msg_len;
738 LASSERT(tx->tx_msg.ksm_type == KSOCK_MSG_NOOP);
740 tx->tx_iov[0].iov_len = offsetof(ksock_msg_t, ksm_u.lnetmsg.ksnm_hdr);
741 tx->tx_resid = tx->tx_nob = offsetof(ksock_msg_t, ksm_u.lnetmsg.ksnm_hdr);
743 /* Don't checksum before start sending, because packet can be piggybacked with ACK */
747 ksocknal_unpack_msg_v1(ksock_msg_t *msg)
750 msg->ksm_type = KSOCK_MSG_LNET;
751 msg->ksm_zc_cookies[0] = msg->ksm_zc_cookies[1] = 0;
755 ksocknal_unpack_msg_v2(ksock_msg_t *msg)
757 return; /* Do nothing */
760 ksock_proto_t ksocknal_protocol_v1x = {
761 .pro_version = KSOCK_PROTO_V1,
762 .pro_send_hello = ksocknal_send_hello_v1,
763 .pro_recv_hello = ksocknal_recv_hello_v1,
764 .pro_pack = ksocknal_pack_msg_v1,
765 .pro_unpack = ksocknal_unpack_msg_v1,
766 .pro_queue_tx_msg = ksocknal_queue_tx_msg_v1,
767 .pro_handle_zcreq = NULL,
768 .pro_handle_zcack = NULL,
769 .pro_queue_tx_zcack = NULL,
770 .pro_match_tx = ksocknal_match_tx
773 ksock_proto_t ksocknal_protocol_v2x = {
774 .pro_version = KSOCK_PROTO_V2,
775 .pro_send_hello = ksocknal_send_hello_v2,
776 .pro_recv_hello = ksocknal_recv_hello_v2,
777 .pro_pack = ksocknal_pack_msg_v2,
778 .pro_unpack = ksocknal_unpack_msg_v2,
779 .pro_queue_tx_msg = ksocknal_queue_tx_msg_v2,
780 .pro_queue_tx_zcack = ksocknal_queue_tx_zcack_v2,
781 .pro_handle_zcreq = ksocknal_handle_zcreq,
782 .pro_handle_zcack = ksocknal_handle_zcack,
783 .pro_match_tx = ksocknal_match_tx
786 ksock_proto_t ksocknal_protocol_v3x = {
787 .pro_version = KSOCK_PROTO_V3,
788 .pro_send_hello = ksocknal_send_hello_v2,
789 .pro_recv_hello = ksocknal_recv_hello_v2,
790 .pro_pack = ksocknal_pack_msg_v2,
791 .pro_unpack = ksocknal_unpack_msg_v2,
792 .pro_queue_tx_msg = ksocknal_queue_tx_msg_v2,
793 .pro_queue_tx_zcack = ksocknal_queue_tx_zcack_v3,
794 .pro_handle_zcreq = ksocknal_handle_zcreq,
795 .pro_handle_zcack = ksocknal_handle_zcack,
796 .pro_match_tx = ksocknal_match_tx_v3