2 * Copyright (c) 2012 Chelsio Communications, Inc.
4 * Written by: Navdeep Parhar <np@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
32 #include "opt_inet6.h"
34 #include <sys/param.h>
35 #include <sys/types.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
39 #include <sys/module.h>
40 #include <sys/protosw.h>
41 #include <sys/domain.h>
42 #include <sys/socket.h>
43 #include <sys/socketvar.h>
44 #include <sys/taskqueue.h>
46 #include <netinet/in.h>
47 #include <netinet/in_pcb.h>
48 #include <netinet/in_var.h>
49 #include <netinet/ip.h>
50 #include <netinet/ip6.h>
51 #include <netinet/tcp_var.h>
52 #include <netinet6/scope6_var.h>
54 #include <netinet/tcp_fsm.h>
55 #include <netinet/toecore.h>
58 #include "common/common.h"
59 #include "common/t4_msg.h"
60 #include "common/t4_regs.h"
61 #include "common/t4_regs_values.h"
62 #include "common/t4_tcb.h"
63 #include "tom/t4_tom_l2t.h"
64 #include "tom/t4_tom.h"
66 static struct protosw ddp_protosw;
67 static struct pr_usrreqs ddp_usrreqs;
69 static struct protosw ddp6_protosw;
70 static struct pr_usrreqs ddp6_usrreqs;
73 static int t4_tom_mod_load(void);
74 static int t4_tom_mod_unload(void);
75 static int t4_tom_modevent(module_t, int, void *);
77 /* ULD ops and helpers */
78 static int t4_tom_activate(struct adapter *);
79 static int t4_tom_deactivate(struct adapter *);
81 static struct uld_info tom_uld_info = {
83 .activate = t4_tom_activate,
84 .deactivate = t4_tom_deactivate,
87 static void queue_tid_release(struct adapter *, int);
88 static void release_offload_resources(struct toepcb *);
89 static int alloc_tid_tabs(struct tid_info *);
90 static void free_tid_tabs(struct tid_info *);
91 static int add_lip(struct adapter *, struct in6_addr *);
92 static int delete_lip(struct adapter *, struct in6_addr *);
93 static struct clip_entry *search_lip(struct tom_data *, struct in6_addr *);
94 static void init_clip_table(struct adapter *, struct tom_data *);
95 static void update_clip(struct adapter *, void *);
96 static void t4_clip_task(void *, int);
97 static void update_clip_table(struct adapter *, struct tom_data *);
98 static void destroy_clip_table(struct adapter *, struct tom_data *);
99 static void free_tom_data(struct adapter *, struct tom_data *);
101 static int in6_ifaddr_gen;
102 static eventhandler_tag ifaddr_evhandler;
103 static struct timeout_task clip_task;
106 alloc_toepcb(struct port_info *pi, int txqid, int rxqid, int flags)
108 struct adapter *sc = pi->adapter;
110 int tx_credits, txsd_total, len;
113 * The firmware counts tx work request credits in units of 16 bytes
114 * each. Reserve room for an ABORT_REQ so the driver never has to worry
115 * about tx credits if it wants to abort a connection.
117 tx_credits = sc->params.ofldq_wr_cred;
118 tx_credits -= howmany(sizeof(struct cpl_abort_req), 16);
121 * Shortest possible tx work request is a fw_ofld_tx_data_wr + 1 byte
122 * immediate payload, and firmware counts tx work request credits in
123 * units of 16 byte. Calculate the maximum work requests possible.
125 txsd_total = tx_credits /
126 howmany((sizeof(struct fw_ofld_tx_data_wr) + 1), 16);
129 txqid = (arc4random() % pi->nofldtxq) + pi->first_ofld_txq;
130 KASSERT(txqid >= pi->first_ofld_txq &&
131 txqid < pi->first_ofld_txq + pi->nofldtxq,
132 ("%s: txqid %d for port %p (first %d, n %d)", __func__, txqid, pi,
133 pi->first_ofld_txq, pi->nofldtxq));
136 rxqid = (arc4random() % pi->nofldrxq) + pi->first_ofld_rxq;
137 KASSERT(rxqid >= pi->first_ofld_rxq &&
138 rxqid < pi->first_ofld_rxq + pi->nofldrxq,
139 ("%s: rxqid %d for port %p (first %d, n %d)", __func__, rxqid, pi,
140 pi->first_ofld_rxq, pi->nofldrxq));
142 len = offsetof(struct toepcb, txsd) +
143 txsd_total * sizeof(struct ofld_tx_sdesc);
145 toep = malloc(len, M_CXGBE, M_ZERO | flags);
149 toep->td = sc->tom_softc;
151 toep->tx_credits = tx_credits;
152 toep->ofld_txq = &sc->sge.ofld_txq[txqid];
153 toep->ofld_rxq = &sc->sge.ofld_rxq[rxqid];
154 toep->ctrlq = &sc->sge.ctrlq[pi->port_id];
155 toep->txsd_total = txsd_total;
156 toep->txsd_avail = txsd_total;
164 free_toepcb(struct toepcb *toep)
167 KASSERT(!(toep->flags & TPF_ATTACHED),
168 ("%s: attached to an inpcb", __func__));
169 KASSERT(!(toep->flags & TPF_CPL_PENDING),
170 ("%s: CPL pending", __func__));
176 * Set up the socket for TCP offload.
179 offload_socket(struct socket *so, struct toepcb *toep)
181 struct tom_data *td = toep->td;
182 struct inpcb *inp = sotoinpcb(so);
183 struct tcpcb *tp = intotcpcb(inp);
186 INP_WLOCK_ASSERT(inp);
191 sb->sb_flags |= SB_NOCOALESCE;
195 sb->sb_flags |= SB_NOCOALESCE;
196 if (toep->ulp_mode == ULP_MODE_TCPDDP) {
197 if (inp->inp_vflag & INP_IPV6)
198 so->so_proto = &ddp6_protosw;
200 so->so_proto = &ddp_protosw;
207 tp->t_flags |= TF_TOE;
209 /* Install an extra hold on inp */
211 toep->flags |= TPF_ATTACHED;
214 /* Add the TOE PCB to the active list */
215 mtx_lock(&td->toep_list_lock);
216 TAILQ_INSERT_HEAD(&td->toep_list, toep, link);
217 mtx_unlock(&td->toep_list_lock);
220 /* This is _not_ the normal way to "unoffload" a socket. */
222 undo_offload_socket(struct socket *so)
224 struct inpcb *inp = sotoinpcb(so);
225 struct tcpcb *tp = intotcpcb(inp);
226 struct toepcb *toep = tp->t_toe;
227 struct tom_data *td = toep->td;
230 INP_WLOCK_ASSERT(inp);
234 sb->sb_flags &= ~SB_NOCOALESCE;
238 sb->sb_flags &= ~SB_NOCOALESCE;
243 tp->t_flags &= ~TF_TOE;
246 toep->flags &= ~TPF_ATTACHED;
247 if (in_pcbrele_wlocked(inp))
248 panic("%s: inp freed.", __func__);
250 mtx_lock(&td->toep_list_lock);
251 TAILQ_REMOVE(&td->toep_list, toep, link);
252 mtx_unlock(&td->toep_list_lock);
256 release_offload_resources(struct toepcb *toep)
258 struct tom_data *td = toep->td;
259 struct adapter *sc = td_adapter(td);
262 KASSERT(!(toep->flags & TPF_CPL_PENDING),
263 ("%s: %p has CPL pending.", __func__, toep));
264 KASSERT(!(toep->flags & TPF_ATTACHED),
265 ("%s: %p is still attached.", __func__, toep));
267 CTR5(KTR_CXGBE, "%s: toep %p (tid %d, l2te %p, ce %p)",
268 __func__, toep, tid, toep->l2te, toep->ce);
270 if (toep->ulp_mode == ULP_MODE_TCPDDP)
271 release_ddp_resources(toep);
274 t4_l2t_release(toep->l2te);
278 release_tid(sc, tid, toep->ctrlq);
282 release_lip(td, toep->ce);
284 mtx_lock(&td->toep_list_lock);
285 TAILQ_REMOVE(&td->toep_list, toep, link);
286 mtx_unlock(&td->toep_list_lock);
292 * The kernel is done with the TCP PCB and this is our opportunity to unhook the
293 * toepcb hanging off of it. If the TOE driver is also done with the toepcb (no
294 * pending CPL) then it is time to release all resources tied to the toepcb.
296 * Also gets called when an offloaded active open fails and the TOM wants the
297 * kernel to take the TCP PCB back.
300 t4_pcb_detach(struct toedev *tod __unused, struct tcpcb *tp)
302 #if defined(KTR) || defined(INVARIANTS)
303 struct inpcb *inp = tp->t_inpcb;
305 struct toepcb *toep = tp->t_toe;
307 INP_WLOCK_ASSERT(inp);
309 KASSERT(toep != NULL, ("%s: toep is NULL", __func__));
310 KASSERT(toep->flags & TPF_ATTACHED,
311 ("%s: not attached", __func__));
314 if (tp->t_state == TCPS_SYN_SENT) {
315 CTR6(KTR_CXGBE, "%s: atid %d, toep %p (0x%x), inp %p (0x%x)",
316 __func__, toep->tid, toep, toep->flags, inp,
320 "t4_pcb_detach: tid %d (%s), toep %p (0x%x), inp %p (0x%x)",
321 toep->tid, tcpstates[tp->t_state], toep, toep->flags, inp,
327 tp->t_flags &= ~TF_TOE;
328 toep->flags &= ~TPF_ATTACHED;
330 if (!(toep->flags & TPF_CPL_PENDING))
331 release_offload_resources(toep);
335 * setsockopt handler.
338 t4_ctloutput(struct toedev *tod, struct tcpcb *tp, int dir, int name)
340 struct adapter *sc = tod->tod_softc;
341 struct toepcb *toep = tp->t_toe;
346 CTR4(KTR_CXGBE, "%s: tp %p, dir %u, name %u", __func__, tp, dir, name);
350 t4_set_tcb_field(sc, toep, 1, W_TCB_T_FLAGS, V_TF_NAGLE(1),
351 V_TF_NAGLE(tp->t_flags & TF_NODELAY ? 0 : 1));
359 * The TOE driver will not receive any more CPLs for the tid associated with the
360 * toepcb; release the hold on the inpcb.
363 final_cpl_received(struct toepcb *toep)
365 struct inpcb *inp = toep->inp;
367 KASSERT(inp != NULL, ("%s: inp is NULL", __func__));
368 INP_WLOCK_ASSERT(inp);
369 KASSERT(toep->flags & TPF_CPL_PENDING,
370 ("%s: CPL not pending already?", __func__));
372 CTR6(KTR_CXGBE, "%s: tid %d, toep %p (0x%x), inp %p (0x%x)",
373 __func__, toep->tid, toep, toep->flags, inp, inp->inp_flags);
376 toep->flags &= ~TPF_CPL_PENDING;
378 if (!(toep->flags & TPF_ATTACHED))
379 release_offload_resources(toep);
381 if (!in_pcbrele_wlocked(inp))
386 insert_tid(struct adapter *sc, int tid, void *ctx)
388 struct tid_info *t = &sc->tids;
390 t->tid_tab[tid] = ctx;
391 atomic_add_int(&t->tids_in_use, 1);
395 lookup_tid(struct adapter *sc, int tid)
397 struct tid_info *t = &sc->tids;
399 return (t->tid_tab[tid]);
403 update_tid(struct adapter *sc, int tid, void *ctx)
405 struct tid_info *t = &sc->tids;
407 t->tid_tab[tid] = ctx;
411 remove_tid(struct adapter *sc, int tid)
413 struct tid_info *t = &sc->tids;
415 t->tid_tab[tid] = NULL;
416 atomic_subtract_int(&t->tids_in_use, 1);
420 release_tid(struct adapter *sc, int tid, struct sge_wrq *ctrlq)
423 struct cpl_tid_release *req;
425 wr = alloc_wrqe(sizeof(*req), ctrlq);
427 queue_tid_release(sc, tid); /* defer */
432 INIT_TP_WR_MIT_CPL(req, CPL_TID_RELEASE, tid);
438 queue_tid_release(struct adapter *sc, int tid)
441 CXGBE_UNIMPLEMENTED("deferred tid release");
445 * What mtu_idx to use, given a 4-tuple and/or an MSS cap
448 find_best_mtu_idx(struct adapter *sc, struct in_conninfo *inc, int pmss)
450 unsigned short *mtus = &sc->params.mtus[0];
453 KASSERT(inc != NULL || pmss > 0,
454 ("%s: at least one of inc/pmss must be specified", __func__));
456 mss = inc ? tcp_mssopt(inc) : pmss;
457 if (pmss > 0 && mss > pmss)
460 if (inc->inc_flags & INC_ISIPV6)
461 n = sizeof(struct ip6_hdr) + sizeof(struct tcphdr);
463 n = sizeof(struct ip) + sizeof(struct tcphdr);
465 for (i = 0; i < NMTUS - 1 && mtus[i + 1] <= mss + n; i++)
472 * Determine the receive window size for a socket.
475 select_rcv_wnd(struct socket *so)
479 SOCKBUF_LOCK_ASSERT(&so->so_rcv);
481 wnd = sbspace(&so->so_rcv);
482 if (wnd < MIN_RCV_WND)
485 return min(wnd, MAX_RCV_WND);
489 select_rcv_wscale(void)
492 unsigned long space = sb_max;
494 if (space > MAX_RCV_WND)
497 while (wscale < TCP_MAX_WINSHIFT && (TCP_MAXWIN << wscale) < space)
503 extern int always_keepalive;
504 #define VIID_SMACIDX(v) (((unsigned int)(v) & 0x7f) << 1)
507 * socket so could be a listening socket too.
510 calc_opt0(struct socket *so, struct port_info *pi, struct l2t_entry *e,
511 int mtu_idx, int rscale, int rx_credits, int ulp_mode)
515 KASSERT(rx_credits <= M_RCV_BUFSIZ,
516 ("%s: rcv_bufsiz too high", __func__));
518 opt0 = F_TCAM_BYPASS | V_WND_SCALE(rscale) | V_MSS_IDX(mtu_idx) |
519 V_ULP_MODE(ulp_mode) | V_RCV_BUFSIZ(rx_credits);
522 struct inpcb *inp = sotoinpcb(so);
523 struct tcpcb *tp = intotcpcb(inp);
524 int keepalive = always_keepalive ||
525 so_options_get(so) & SO_KEEPALIVE;
527 opt0 |= V_NAGLE((tp->t_flags & TF_NODELAY) == 0);
528 opt0 |= V_KEEP_ALIVE(keepalive != 0);
532 opt0 |= V_L2T_IDX(e->idx);
535 opt0 |= V_SMAC_SEL(VIID_SMACIDX(pi->viid));
536 opt0 |= V_TX_CHAN(pi->tx_chan);
539 return htobe64(opt0);
543 select_ntuple(struct port_info *pi, struct l2t_entry *e)
545 struct adapter *sc = pi->adapter;
546 struct tp_params *tp = &sc->params.tp;
547 uint16_t viid = pi->viid;
551 * Initialize each of the fields which we care about which are present
552 * in the Compressed Filter Tuple.
554 if (tp->vlan_shift >= 0 && e->vlan != CPL_L2T_VLAN_NONE)
555 ntuple |= (uint64_t)(F_FT_VLAN_VLD | e->vlan) << tp->vlan_shift;
557 if (tp->port_shift >= 0)
558 ntuple |= (uint64_t)e->lport << tp->port_shift;
560 if (tp->protocol_shift >= 0)
561 ntuple |= (uint64_t)IPPROTO_TCP << tp->protocol_shift;
563 if (tp->vnic_shift >= 0) {
564 uint32_t vf = G_FW_VIID_VIN(viid);
565 uint32_t pf = G_FW_VIID_PFN(viid);
566 uint32_t vld = G_FW_VIID_VIVLD(viid);
568 ntuple |= (uint64_t)(V_FT_VNID_ID_VF(vf) | V_FT_VNID_ID_PF(pf) |
569 V_FT_VNID_ID_VLD(vld)) << tp->vnic_shift;
573 return (htobe32((uint32_t)ntuple));
575 return (htobe64(V_FILTER_TUPLE(ntuple)));
579 set_tcpddp_ulp_mode(struct toepcb *toep)
582 toep->ulp_mode = ULP_MODE_TCPDDP;
583 toep->ddp_flags = DDP_OK;
584 toep->ddp_score = DDP_LOW_SCORE;
588 negative_advice(int status)
591 return (status == CPL_ERR_RTX_NEG_ADVICE ||
592 status == CPL_ERR_PERSIST_NEG_ADVICE ||
593 status == CPL_ERR_KEEPALV_NEG_ADVICE);
597 alloc_tid_tabs(struct tid_info *t)
602 size = t->ntids * sizeof(*t->tid_tab) +
603 t->natids * sizeof(*t->atid_tab) +
604 t->nstids * sizeof(*t->stid_tab);
606 t->tid_tab = malloc(size, M_CXGBE, M_ZERO | M_NOWAIT);
607 if (t->tid_tab == NULL)
610 mtx_init(&t->atid_lock, "atid lock", NULL, MTX_DEF);
611 t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids];
612 t->afree = t->atid_tab;
614 for (i = 1; i < t->natids; i++)
615 t->atid_tab[i - 1].next = &t->atid_tab[i];
616 t->atid_tab[t->natids - 1].next = NULL;
618 mtx_init(&t->stid_lock, "stid lock", NULL, MTX_DEF);
619 t->stid_tab = (struct listen_ctx **)&t->atid_tab[t->natids];
621 TAILQ_INIT(&t->stids);
622 t->nstids_free_head = t->nstids;
624 atomic_store_rel_int(&t->tids_in_use, 0);
630 free_tid_tabs(struct tid_info *t)
632 KASSERT(t->tids_in_use == 0,
633 ("%s: %d tids still in use.", __func__, t->tids_in_use));
634 KASSERT(t->atids_in_use == 0,
635 ("%s: %d atids still in use.", __func__, t->atids_in_use));
636 KASSERT(t->stids_in_use == 0,
637 ("%s: %d tids still in use.", __func__, t->stids_in_use));
639 free(t->tid_tab, M_CXGBE);
642 if (mtx_initialized(&t->atid_lock))
643 mtx_destroy(&t->atid_lock);
644 if (mtx_initialized(&t->stid_lock))
645 mtx_destroy(&t->stid_lock);
649 add_lip(struct adapter *sc, struct in6_addr *lip)
651 struct fw_clip_cmd c;
653 ASSERT_SYNCHRONIZED_OP(sc);
654 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */
656 memset(&c, 0, sizeof(c));
657 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST |
659 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_ALLOC | FW_LEN16(c));
660 c.ip_hi = *(uint64_t *)&lip->s6_addr[0];
661 c.ip_lo = *(uint64_t *)&lip->s6_addr[8];
663 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c));
667 delete_lip(struct adapter *sc, struct in6_addr *lip)
669 struct fw_clip_cmd c;
671 ASSERT_SYNCHRONIZED_OP(sc);
672 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */
674 memset(&c, 0, sizeof(c));
675 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST |
677 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_FREE | FW_LEN16(c));
678 c.ip_hi = *(uint64_t *)&lip->s6_addr[0];
679 c.ip_lo = *(uint64_t *)&lip->s6_addr[8];
681 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c));
684 static struct clip_entry *
685 search_lip(struct tom_data *td, struct in6_addr *lip)
687 struct clip_entry *ce;
689 mtx_assert(&td->clip_table_lock, MA_OWNED);
691 TAILQ_FOREACH(ce, &td->clip_table, link) {
692 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip))
700 hold_lip(struct tom_data *td, struct in6_addr *lip)
702 struct clip_entry *ce;
704 mtx_lock(&td->clip_table_lock);
705 ce = search_lip(td, lip);
708 mtx_unlock(&td->clip_table_lock);
714 release_lip(struct tom_data *td, struct clip_entry *ce)
717 mtx_lock(&td->clip_table_lock);
718 KASSERT(search_lip(td, &ce->lip) == ce,
719 ("%s: CLIP entry %p p not in CLIP table.", __func__, ce));
720 KASSERT(ce->refcount > 0,
721 ("%s: CLIP entry %p has refcount 0", __func__, ce));
723 mtx_unlock(&td->clip_table_lock);
727 init_clip_table(struct adapter *sc, struct tom_data *td)
730 ASSERT_SYNCHRONIZED_OP(sc);
732 mtx_init(&td->clip_table_lock, "CLIP table lock", NULL, MTX_DEF);
733 TAILQ_INIT(&td->clip_table);
736 update_clip_table(sc, td);
740 update_clip(struct adapter *sc, void *arg __unused)
743 if (begin_synchronized_op(sc, NULL, HOLD_LOCK, "t4tomuc"))
746 if (sc->flags & TOM_INIT_DONE)
747 update_clip_table(sc, sc->tom_softc);
749 end_synchronized_op(sc, LOCK_HELD);
753 t4_clip_task(void *arg, int count)
756 t4_iterate(update_clip, NULL);
760 update_clip_table(struct adapter *sc, struct tom_data *td)
762 struct in6_ifaddr *ia;
763 struct in6_addr *lip, tlip;
764 struct clip_head stale;
765 struct clip_entry *ce, *ce_temp;
766 int rc, gen = atomic_load_acq_int(&in6_ifaddr_gen);
768 ASSERT_SYNCHRONIZED_OP(sc);
771 mtx_lock(&td->clip_table_lock);
773 if (gen == td->clip_gen)
777 TAILQ_CONCAT(&stale, &td->clip_table, link);
779 TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) {
780 lip = &ia->ia_addr.sin6_addr;
782 KASSERT(!IN6_IS_ADDR_MULTICAST(lip),
783 ("%s: mcast address in in6_ifaddr list", __func__));
785 if (IN6_IS_ADDR_LOOPBACK(lip))
787 if (IN6_IS_SCOPE_EMBED(lip)) {
788 /* Remove the embedded scope */
794 * XXX: how to weed out the link local address for the loopback
795 * interface? It's fe80::1 usually (always?).
799 * If it's in the main list then we already know it's not stale.
801 TAILQ_FOREACH(ce, &td->clip_table, link) {
802 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip))
807 * If it's in the stale list we should move it to the main list.
809 TAILQ_FOREACH(ce, &stale, link) {
810 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) {
811 TAILQ_REMOVE(&stale, ce, link);
812 TAILQ_INSERT_TAIL(&td->clip_table, ce, link);
817 /* A new IP6 address; add it to the CLIP table */
818 ce = malloc(sizeof(*ce), M_CXGBE, M_NOWAIT);
819 memcpy(&ce->lip, lip, sizeof(ce->lip));
821 rc = add_lip(sc, lip);
823 TAILQ_INSERT_TAIL(&td->clip_table, ce, link);
825 char ip[INET6_ADDRSTRLEN];
827 inet_ntop(AF_INET6, &ce->lip, &ip[0], sizeof(ip));
828 log(LOG_ERR, "%s: could not add %s (%d)\n",
837 * Remove stale addresses (those no longer in V_in6_ifaddrhead) that are
838 * no longer referenced by the driver.
840 TAILQ_FOREACH_SAFE(ce, &stale, link, ce_temp) {
841 if (ce->refcount == 0) {
842 rc = delete_lip(sc, &ce->lip);
844 TAILQ_REMOVE(&stale, ce, link);
847 char ip[INET6_ADDRSTRLEN];
849 inet_ntop(AF_INET6, &ce->lip, &ip[0],
851 log(LOG_ERR, "%s: could not delete %s (%d)\n",
856 /* The ones that are still referenced need to stay in the CLIP table */
857 TAILQ_CONCAT(&td->clip_table, &stale, link);
861 mtx_unlock(&td->clip_table_lock);
862 IN6_IFADDR_RUNLOCK();
866 destroy_clip_table(struct adapter *sc, struct tom_data *td)
868 struct clip_entry *ce, *ce_temp;
870 if (mtx_initialized(&td->clip_table_lock)) {
871 mtx_lock(&td->clip_table_lock);
872 TAILQ_FOREACH_SAFE(ce, &td->clip_table, link, ce_temp) {
873 KASSERT(ce->refcount == 0,
874 ("%s: CLIP entry %p still in use (%d)", __func__,
876 TAILQ_REMOVE(&td->clip_table, ce, link);
877 delete_lip(sc, &ce->lip);
880 mtx_unlock(&td->clip_table_lock);
881 mtx_destroy(&td->clip_table_lock);
886 free_tom_data(struct adapter *sc, struct tom_data *td)
889 ASSERT_SYNCHRONIZED_OP(sc);
891 KASSERT(TAILQ_EMPTY(&td->toep_list),
892 ("%s: TOE PCB list is not empty.", __func__));
893 KASSERT(td->lctx_count == 0,
894 ("%s: lctx hash table is not empty.", __func__));
896 t4_uninit_l2t_cpl_handlers(sc);
897 t4_uninit_cpl_io_handlers(sc);
898 t4_uninit_ddp(sc, td);
899 destroy_clip_table(sc, td);
901 if (td->listen_mask != 0)
902 hashdestroy(td->listen_hash, M_CXGBE, td->listen_mask);
904 if (mtx_initialized(&td->lctx_hash_lock))
905 mtx_destroy(&td->lctx_hash_lock);
906 if (mtx_initialized(&td->toep_list_lock))
907 mtx_destroy(&td->toep_list_lock);
909 free_tid_tabs(&sc->tids);
914 * Ground control to Major TOM
915 * Commencing countdown, engines on
918 t4_tom_activate(struct adapter *sc)
924 ASSERT_SYNCHRONIZED_OP(sc);
926 /* per-adapter softc for TOM */
927 td = malloc(sizeof(*td), M_CXGBE, M_ZERO | M_NOWAIT);
931 /* List of TOE PCBs and associated lock */
932 mtx_init(&td->toep_list_lock, "PCB list lock", NULL, MTX_DEF);
933 TAILQ_INIT(&td->toep_list);
936 mtx_init(&td->lctx_hash_lock, "lctx hash lock", NULL, MTX_DEF);
937 td->listen_hash = hashinit_flags(LISTEN_HASH_SIZE, M_CXGBE,
938 &td->listen_mask, HASH_NOWAIT);
941 rc = alloc_tid_tabs(&sc->tids);
945 /* DDP page pods and CPL handlers */
948 /* CLIP table for IPv6 offload */
949 init_clip_table(sc, td);
952 t4_init_connect_cpl_handlers(sc);
953 t4_init_l2t_cpl_handlers(sc);
954 t4_init_listen_cpl_handlers(sc);
955 t4_init_cpl_io_handlers(sc);
961 tod->tod_connect = t4_connect;
962 tod->tod_listen_start = t4_listen_start;
963 tod->tod_listen_stop = t4_listen_stop;
964 tod->tod_rcvd = t4_rcvd;
965 tod->tod_output = t4_tod_output;
966 tod->tod_send_rst = t4_send_rst;
967 tod->tod_send_fin = t4_send_fin;
968 tod->tod_pcb_detach = t4_pcb_detach;
969 tod->tod_l2_update = t4_l2_update;
970 tod->tod_syncache_added = t4_syncache_added;
971 tod->tod_syncache_removed = t4_syncache_removed;
972 tod->tod_syncache_respond = t4_syncache_respond;
973 tod->tod_offload_socket = t4_offload_socket;
974 tod->tod_ctloutput = t4_ctloutput;
977 TOEDEV(sc->port[i]->ifp) = &td->tod;
980 sc->flags |= TOM_INIT_DONE;
981 register_toedev(sc->tom_softc);
985 free_tom_data(sc, td);
990 t4_tom_deactivate(struct adapter *sc)
993 struct tom_data *td = sc->tom_softc;
995 ASSERT_SYNCHRONIZED_OP(sc);
998 return (0); /* XXX. KASSERT? */
1000 if (sc->offload_map != 0)
1001 return (EBUSY); /* at least one port has IFCAP_TOE enabled */
1003 mtx_lock(&td->toep_list_lock);
1004 if (!TAILQ_EMPTY(&td->toep_list))
1006 mtx_unlock(&td->toep_list_lock);
1008 mtx_lock(&td->lctx_hash_lock);
1009 if (td->lctx_count > 0)
1011 mtx_unlock(&td->lctx_hash_lock);
1014 unregister_toedev(sc->tom_softc);
1015 free_tom_data(sc, td);
1016 sc->tom_softc = NULL;
1017 sc->flags &= ~TOM_INIT_DONE;
1024 t4_tom_ifaddr_event(void *arg __unused, struct ifnet *ifp)
1027 atomic_add_rel_int(&in6_ifaddr_gen, 1);
1028 taskqueue_enqueue_timeout(taskqueue_thread, &clip_task, -hz / 4);
1032 t4_tom_mod_load(void)
1035 struct protosw *tcp_protosw, *tcp6_protosw;
1037 tcp_protosw = pffindproto(PF_INET, IPPROTO_TCP, SOCK_STREAM);
1038 if (tcp_protosw == NULL)
1039 return (ENOPROTOOPT);
1040 bcopy(tcp_protosw, &ddp_protosw, sizeof(ddp_protosw));
1041 bcopy(tcp_protosw->pr_usrreqs, &ddp_usrreqs, sizeof(ddp_usrreqs));
1042 ddp_usrreqs.pru_soreceive = t4_soreceive_ddp;
1043 ddp_protosw.pr_usrreqs = &ddp_usrreqs;
1045 tcp6_protosw = pffindproto(PF_INET6, IPPROTO_TCP, SOCK_STREAM);
1046 if (tcp6_protosw == NULL)
1047 return (ENOPROTOOPT);
1048 bcopy(tcp6_protosw, &ddp6_protosw, sizeof(ddp6_protosw));
1049 bcopy(tcp6_protosw->pr_usrreqs, &ddp6_usrreqs, sizeof(ddp6_usrreqs));
1050 ddp6_usrreqs.pru_soreceive = t4_soreceive_ddp;
1051 ddp6_protosw.pr_usrreqs = &ddp6_usrreqs;
1053 TIMEOUT_TASK_INIT(taskqueue_thread, &clip_task, 0, t4_clip_task, NULL);
1054 ifaddr_evhandler = EVENTHANDLER_REGISTER(ifaddr_event,
1055 t4_tom_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY);
1057 rc = t4_register_uld(&tom_uld_info);
1059 t4_tom_mod_unload();
1065 tom_uninit(struct adapter *sc, void *arg __unused)
1067 if (begin_synchronized_op(sc, NULL, HOLD_LOCK, "t4tomun"))
1070 /* Try to free resources (works only if no port has IFCAP_TOE) */
1071 if (sc->flags & TOM_INIT_DONE)
1072 t4_deactivate_uld(sc, ULD_TOM);
1074 end_synchronized_op(sc, LOCK_HELD);
1078 t4_tom_mod_unload(void)
1080 t4_iterate(tom_uninit, NULL);
1082 if (t4_unregister_uld(&tom_uld_info) == EBUSY)
1085 if (ifaddr_evhandler) {
1086 EVENTHANDLER_DEREGISTER(ifaddr_event, ifaddr_evhandler);
1087 taskqueue_cancel_timeout(taskqueue_thread, &clip_task, NULL);
1092 #endif /* TCP_OFFLOAD */
1095 t4_tom_modevent(module_t mod, int cmd, void *arg)
1102 rc = t4_tom_mod_load();
1106 rc = t4_tom_mod_unload();
1113 printf("t4_tom: compiled without TCP_OFFLOAD support.\n");
1119 static moduledata_t t4_tom_moddata= {
1125 MODULE_VERSION(t4_tom, 1);
1126 MODULE_DEPEND(t4_tom, toecore, 1, 1, 1);
1127 MODULE_DEPEND(t4_tom, t4nex, 1, 1, 1);
1128 DECLARE_MODULE(t4_tom, t4_tom_moddata, SI_SUB_EXEC, SI_ORDER_ANY);