2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 Chelsio Communications, Inc.
6 * Written by: Navdeep Parhar <np@FreeBSD.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 #include "opt_inet6.h"
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
41 #include <sys/module.h>
42 #include <sys/protosw.h>
43 #include <sys/domain.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
46 #include <sys/sysctl.h>
47 #include <net/ethernet.h>
49 #include <net/if_types.h>
50 #include <net/if_vlan_var.h>
51 #include <net/route.h>
52 #include <net/route/nhop.h>
53 #include <netinet/in.h>
54 #include <netinet/in_pcb.h>
55 #include <netinet/ip.h>
57 #include <netinet/tcp_fsm.h>
58 #include <netinet/tcp_var.h>
59 #include <netinet/toecore.h>
60 #include <netinet/cc/cc.h>
62 #include "common/common.h"
63 #include "common/t4_msg.h"
64 #include "common/t4_regs.h"
65 #include "common/t4_regs_values.h"
67 #include "tom/t4_tom_l2t.h"
68 #include "tom/t4_tom.h"
71 * Active open succeeded.
74 do_act_establish(struct sge_iq *iq, const struct rss_header *rss,
77 struct adapter *sc = iq->adapter;
78 const struct cpl_act_establish *cpl = (const void *)(rss + 1);
79 u_int tid = GET_TID(cpl);
80 u_int atid = G_TID_TID(ntohl(cpl->tos_atid));
81 struct toepcb *toep = lookup_atid(sc, atid);
82 struct inpcb *inp = toep->inp;
84 KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
85 KASSERT(toep->tid == atid, ("%s: toep tid/atid mismatch", __func__));
87 CTR3(KTR_CXGBE, "%s: atid %u, tid %u", __func__, atid, tid);
90 CURVNET_SET(toep->vnet);
93 insert_tid(sc, tid, toep, inp->inp_vflag & INP_IPV6 ? 2 : 1);
94 if (inp->inp_flags & INP_DROPPED) {
96 /* socket closed by the kernel before hw told us it connected */
98 send_flowc_wr(toep, NULL);
99 send_reset(sc, toep, be32toh(cpl->snd_isn));
103 make_established(toep, be32toh(cpl->snd_isn) - 1,
104 be32toh(cpl->rcv_isn) - 1, cpl->tcp_opt);
105 inp->inp_flowtype = M_HASHTYPE_OPAQUE;
106 inp->inp_flowid = tid;
115 act_open_failure_cleanup(struct adapter *sc, u_int atid, u_int status)
117 struct toepcb *toep = lookup_atid(sc, atid);
118 struct inpcb *inp = toep->inp;
119 struct toedev *tod = &toep->td->tod;
120 struct epoch_tracker et;
125 CURVNET_SET(toep->vnet);
126 if (status != EAGAIN)
129 toe_connect_failed(tod, inp, status);
130 final_cpl_received(toep); /* unlocks inp */
131 if (status != EAGAIN)
137 * Active open failed.
140 do_act_open_rpl(struct sge_iq *iq, const struct rss_header *rss,
143 struct adapter *sc = iq->adapter;
144 const struct cpl_act_open_rpl *cpl = (const void *)(rss + 1);
145 u_int atid = G_TID_TID(G_AOPEN_ATID(be32toh(cpl->atid_status)));
146 u_int status = G_AOPEN_STATUS(be32toh(cpl->atid_status));
147 struct toepcb *toep = lookup_atid(sc, atid);
150 KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
151 KASSERT(toep->tid == atid, ("%s: toep tid/atid mismatch", __func__));
153 CTR3(KTR_CXGBE, "%s: atid %u, status %u ", __func__, atid, status);
155 /* Ignore negative advice */
156 if (negative_advice(status))
159 if (status && act_open_has_tid(status))
160 release_tid(sc, GET_TID(cpl), toep->ctrlq);
162 rc = act_open_rpl_status_to_errno(status);
163 act_open_failure_cleanup(sc, atid, rc);
169 t4_init_connect_cpl_handlers(void)
172 t4_register_cpl_handler(CPL_ACT_ESTABLISH, do_act_establish);
173 t4_register_shared_cpl_handler(CPL_ACT_OPEN_RPL, do_act_open_rpl,
178 t4_uninit_connect_cpl_handlers(void)
181 t4_register_cpl_handler(CPL_ACT_ESTABLISH, NULL);
182 t4_register_shared_cpl_handler(CPL_ACT_OPEN_RPL, NULL, CPL_COOKIE_TOM);
185 #define DONT_OFFLOAD_ACTIVE_OPEN(x) do { \
192 act_open_cpl_size(struct adapter *sc, int isipv6)
195 static const int sz_table[3][2] = {
197 sizeof (struct cpl_act_open_req),
198 sizeof (struct cpl_act_open_req6)
201 sizeof (struct cpl_t5_act_open_req),
202 sizeof (struct cpl_t5_act_open_req6)
205 sizeof (struct cpl_t6_act_open_req),
206 sizeof (struct cpl_t6_act_open_req6)
210 MPASS(chip_id(sc) >= CHELSIO_T4);
211 idx = min(chip_id(sc) - CHELSIO_T4, 2);
213 return (sz_table[idx][!!isipv6]);
217 * active open (soconnect).
219 * State of affairs on entry:
220 * soisconnecting (so_state |= SS_ISCONNECTING)
221 * tcbinfo not locked (This has changed - used to be WLOCKed)
223 * tp->t_state = TCPS_SYN_SENT
224 * rtalloc1, RT_UNLOCK on rt.
227 t4_connect(struct toedev *tod, struct socket *so, struct nhop_object *nh,
228 struct sockaddr *nam)
230 struct adapter *sc = tod->tod_softc;
231 struct toepcb *toep = NULL;
232 struct wrqe *wr = NULL;
233 struct ifnet *rt_ifp = nh->nh_ifp;
235 int qid_atid, rc, isipv6;
236 struct inpcb *inp = sotoinpcb(so);
237 struct tcpcb *tp = intotcpcb(inp);
239 struct offload_settings settings;
240 struct epoch_tracker et;
241 uint16_t vid = 0xfff, pcp = 0;
243 INP_WLOCK_ASSERT(inp);
244 KASSERT(nam->sa_family == AF_INET || nam->sa_family == AF_INET6,
245 ("%s: dest addr %p has family %u", __func__, nam, nam->sa_family));
247 if (rt_ifp->if_type == IFT_ETHER)
248 vi = rt_ifp->if_softc;
249 else if (rt_ifp->if_type == IFT_L2VLAN) {
250 struct ifnet *ifp = VLAN_TRUNKDEV(rt_ifp);
253 VLAN_TAG(rt_ifp, &vid);
254 VLAN_PCP(rt_ifp, &pcp);
255 } else if (rt_ifp->if_type == IFT_IEEE8023ADLAG)
256 DONT_OFFLOAD_ACTIVE_OPEN(ENOSYS); /* XXX: implement lagg+TOE */
258 DONT_OFFLOAD_ACTIVE_OPEN(ENOTSUP);
259 if (sc->flags & KERN_TLS_OK)
260 DONT_OFFLOAD_ACTIVE_OPEN(ENOTSUP);
262 rw_rlock(&sc->policy_lock);
263 settings = *lookup_offload_policy(sc, OPEN_TYPE_ACTIVE, NULL,
264 EVL_MAKETAG(vid, pcp, 0), inp);
265 rw_runlock(&sc->policy_lock);
266 if (!settings.offload)
267 DONT_OFFLOAD_ACTIVE_OPEN(EPERM);
269 toep = alloc_toepcb(vi, M_NOWAIT);
271 DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);
273 toep->tid = alloc_atid(sc, toep);
275 DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);
277 toep->l2te = t4_l2t_get(vi->pi, rt_ifp,
278 nh->nh_flags & NHF_GATEWAY ? &nh->gw_sa : nam);
279 if (toep->l2te == NULL)
280 DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);
282 toep->vnet = so->so_vnet;
283 init_conn_params(vi, &settings, &inp->inp_inc, so, NULL,
284 toep->l2te->idx, &toep->params);
285 init_toepcb(vi, toep);
287 isipv6 = nam->sa_family == AF_INET6;
288 wr = alloc_wrqe(act_open_cpl_size(sc, isipv6), toep->ctrlq);
290 DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);
292 qid_atid = V_TID_QID(toep->ofld_rxq->iq.abs_id) | V_TID_TID(toep->tid) |
293 V_TID_COOKIE(CPL_COOKIE_TOM);
296 struct cpl_act_open_req6 *cpl = wrtod(wr);
297 struct cpl_t5_act_open_req6 *cpl5 = (void *)cpl;
298 struct cpl_t6_act_open_req6 *cpl6 = (void *)cpl;
300 if ((inp->inp_vflag & INP_IPV6) == 0)
301 DONT_OFFLOAD_ACTIVE_OPEN(ENOTSUP);
303 toep->ce = t4_hold_lip(sc, &inp->in6p_laddr, NULL);
304 if (toep->ce == NULL)
305 DONT_OFFLOAD_ACTIVE_OPEN(ENOENT);
307 switch (chip_id(sc)) {
310 cpl->params = select_ntuple(vi, toep->l2te);
314 cpl5->iss = htobe32(tp->iss);
315 cpl5->params = select_ntuple(vi, toep->l2te);
320 cpl6->iss = htobe32(tp->iss);
321 cpl6->params = select_ntuple(vi, toep->l2te);
324 OPCODE_TID(cpl) = htobe32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
326 cpl->local_port = inp->inp_lport;
327 cpl->local_ip_hi = *(uint64_t *)&inp->in6p_laddr.s6_addr[0];
328 cpl->local_ip_lo = *(uint64_t *)&inp->in6p_laddr.s6_addr[8];
329 cpl->peer_port = inp->inp_fport;
330 cpl->peer_ip_hi = *(uint64_t *)&inp->in6p_faddr.s6_addr[0];
331 cpl->peer_ip_lo = *(uint64_t *)&inp->in6p_faddr.s6_addr[8];
332 cpl->opt0 = calc_options0(vi, &toep->params);
333 cpl->opt2 = calc_options2(vi, &toep->params);
336 "%s: atid %u, toep %p, inp %p, opt0 %#016lx, opt2 %#08x",
337 __func__, toep->tid, toep, inp, be64toh(cpl->opt0),
340 struct cpl_act_open_req *cpl = wrtod(wr);
341 struct cpl_t5_act_open_req *cpl5 = (void *)cpl;
342 struct cpl_t6_act_open_req *cpl6 = (void *)cpl;
344 switch (chip_id(sc)) {
347 cpl->params = select_ntuple(vi, toep->l2te);
351 cpl5->iss = htobe32(tp->iss);
352 cpl5->params = select_ntuple(vi, toep->l2te);
357 cpl6->iss = htobe32(tp->iss);
358 cpl6->params = select_ntuple(vi, toep->l2te);
361 OPCODE_TID(cpl) = htobe32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
363 inp_4tuple_get(inp, &cpl->local_ip, &cpl->local_port,
364 &cpl->peer_ip, &cpl->peer_port);
365 cpl->opt0 = calc_options0(vi, &toep->params);
366 cpl->opt2 = calc_options2(vi, &toep->params);
369 "%s: atid %u, toep %p, inp %p, opt0 %#016lx, opt2 %#08x",
370 __func__, toep->tid, toep, inp, be64toh(cpl->opt0),
374 offload_socket(so, toep);
376 rc = t4_l2t_send(sc, wr, toep->l2te);
379 toep->flags |= TPF_CPL_PENDING;
383 undo_offload_socket(so);
386 CTR3(KTR_CXGBE, "%s: not offloading (%d), rc %d", __func__, reason, rc);
393 free_atid(sc, toep->tid);
395 t4_l2t_release(toep->l2te);
397 t4_release_lip(sc, toep->ce);