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 <net/if_var.h>
47 #include <netinet/in.h>
48 #include <netinet/in_pcb.h>
49 #include <netinet/in_var.h>
50 #include <netinet/ip.h>
51 #include <netinet/ip6.h>
52 #include <netinet/tcp_var.h>
53 #include <netinet6/scope6_var.h>
55 #include <netinet/tcp_fsm.h>
56 #include <netinet/toecore.h>
59 #include "common/common.h"
60 #include "common/t4_msg.h"
61 #include "common/t4_regs.h"
62 #include "common/t4_regs_values.h"
63 #include "common/t4_tcb.h"
64 #include "tom/t4_tom_l2t.h"
65 #include "tom/t4_tom.h"
67 static struct protosw ddp_protosw;
68 static struct pr_usrreqs ddp_usrreqs;
70 static struct protosw ddp6_protosw;
71 static struct pr_usrreqs ddp6_usrreqs;
74 static int t4_tom_mod_load(void);
75 static int t4_tom_mod_unload(void);
76 static int t4_tom_modevent(module_t, int, void *);
78 /* ULD ops and helpers */
79 static int t4_tom_activate(struct adapter *);
80 static int t4_tom_deactivate(struct adapter *);
82 static struct uld_info tom_uld_info = {
84 .activate = t4_tom_activate,
85 .deactivate = t4_tom_deactivate,
88 static void queue_tid_release(struct adapter *, int);
89 static void release_offload_resources(struct toepcb *);
90 static int alloc_tid_tabs(struct tid_info *);
91 static void free_tid_tabs(struct tid_info *);
92 static int add_lip(struct adapter *, struct in6_addr *);
93 static int delete_lip(struct adapter *, struct in6_addr *);
94 static struct clip_entry *search_lip(struct tom_data *, struct in6_addr *);
95 static void init_clip_table(struct adapter *, struct tom_data *);
96 static void update_clip(struct adapter *, void *);
97 static void t4_clip_task(void *, int);
98 static void update_clip_table(struct adapter *, struct tom_data *);
99 static void destroy_clip_table(struct adapter *, struct tom_data *);
100 static void free_tom_data(struct adapter *, struct tom_data *);
101 static void reclaim_wr_resources(void *, int);
103 static int in6_ifaddr_gen;
104 static eventhandler_tag ifaddr_evhandler;
105 static struct timeout_task clip_task;
108 alloc_toepcb(struct port_info *pi, int txqid, int rxqid, int flags)
110 struct adapter *sc = pi->adapter;
112 int tx_credits, txsd_total, len;
115 * The firmware counts tx work request credits in units of 16 bytes
116 * each. Reserve room for an ABORT_REQ so the driver never has to worry
117 * about tx credits if it wants to abort a connection.
119 tx_credits = sc->params.ofldq_wr_cred;
120 tx_credits -= howmany(sizeof(struct cpl_abort_req), 16);
123 * Shortest possible tx work request is a fw_ofld_tx_data_wr + 1 byte
124 * immediate payload, and firmware counts tx work request credits in
125 * units of 16 byte. Calculate the maximum work requests possible.
127 txsd_total = tx_credits /
128 howmany((sizeof(struct fw_ofld_tx_data_wr) + 1), 16);
131 txqid = (arc4random() % pi->nofldtxq) + pi->first_ofld_txq;
132 KASSERT(txqid >= pi->first_ofld_txq &&
133 txqid < pi->first_ofld_txq + pi->nofldtxq,
134 ("%s: txqid %d for port %p (first %d, n %d)", __func__, txqid, pi,
135 pi->first_ofld_txq, pi->nofldtxq));
138 rxqid = (arc4random() % pi->nofldrxq) + pi->first_ofld_rxq;
139 KASSERT(rxqid >= pi->first_ofld_rxq &&
140 rxqid < pi->first_ofld_rxq + pi->nofldrxq,
141 ("%s: rxqid %d for port %p (first %d, n %d)", __func__, rxqid, pi,
142 pi->first_ofld_rxq, pi->nofldrxq));
144 len = offsetof(struct toepcb, txsd) +
145 txsd_total * sizeof(struct ofld_tx_sdesc);
147 toep = malloc(len, M_CXGBE, M_ZERO | flags);
151 toep->td = sc->tom_softc;
153 toep->tx_total = tx_credits;
154 toep->tx_credits = tx_credits;
155 toep->ofld_txq = &sc->sge.ofld_txq[txqid];
156 toep->ofld_rxq = &sc->sge.ofld_rxq[rxqid];
157 toep->ctrlq = &sc->sge.ctrlq[pi->port_id];
158 toep->txsd_total = txsd_total;
159 toep->txsd_avail = txsd_total;
167 free_toepcb(struct toepcb *toep)
170 KASSERT(!(toep->flags & TPF_ATTACHED),
171 ("%s: attached to an inpcb", __func__));
172 KASSERT(!(toep->flags & TPF_CPL_PENDING),
173 ("%s: CPL pending", __func__));
179 * Set up the socket for TCP offload.
182 offload_socket(struct socket *so, struct toepcb *toep)
184 struct tom_data *td = toep->td;
185 struct inpcb *inp = sotoinpcb(so);
186 struct tcpcb *tp = intotcpcb(inp);
189 INP_WLOCK_ASSERT(inp);
194 sb->sb_flags |= SB_NOCOALESCE;
198 sb->sb_flags |= SB_NOCOALESCE;
199 if (toep->ulp_mode == ULP_MODE_TCPDDP) {
200 if (inp->inp_vflag & INP_IPV6)
201 so->so_proto = &ddp6_protosw;
203 so->so_proto = &ddp_protosw;
210 tp->t_flags |= TF_TOE;
212 /* Install an extra hold on inp */
214 toep->flags |= TPF_ATTACHED;
217 /* Add the TOE PCB to the active list */
218 mtx_lock(&td->toep_list_lock);
219 TAILQ_INSERT_HEAD(&td->toep_list, toep, link);
220 mtx_unlock(&td->toep_list_lock);
223 /* This is _not_ the normal way to "unoffload" a socket. */
225 undo_offload_socket(struct socket *so)
227 struct inpcb *inp = sotoinpcb(so);
228 struct tcpcb *tp = intotcpcb(inp);
229 struct toepcb *toep = tp->t_toe;
230 struct tom_data *td = toep->td;
233 INP_WLOCK_ASSERT(inp);
237 sb->sb_flags &= ~SB_NOCOALESCE;
241 sb->sb_flags &= ~SB_NOCOALESCE;
246 tp->t_flags &= ~TF_TOE;
249 toep->flags &= ~TPF_ATTACHED;
250 if (in_pcbrele_wlocked(inp))
251 panic("%s: inp freed.", __func__);
253 mtx_lock(&td->toep_list_lock);
254 TAILQ_REMOVE(&td->toep_list, toep, link);
255 mtx_unlock(&td->toep_list_lock);
259 release_offload_resources(struct toepcb *toep)
261 struct tom_data *td = toep->td;
262 struct adapter *sc = td_adapter(td);
265 KASSERT(!(toep->flags & TPF_CPL_PENDING),
266 ("%s: %p has CPL pending.", __func__, toep));
267 KASSERT(!(toep->flags & TPF_ATTACHED),
268 ("%s: %p is still attached.", __func__, toep));
270 CTR5(KTR_CXGBE, "%s: toep %p (tid %d, l2te %p, ce %p)",
271 __func__, toep, tid, toep->l2te, toep->ce);
273 if (toep->ulp_mode == ULP_MODE_TCPDDP)
274 release_ddp_resources(toep);
277 t4_l2t_release(toep->l2te);
281 release_tid(sc, tid, toep->ctrlq);
285 release_lip(td, toep->ce);
287 mtx_lock(&td->toep_list_lock);
288 TAILQ_REMOVE(&td->toep_list, toep, link);
289 mtx_unlock(&td->toep_list_lock);
295 * The kernel is done with the TCP PCB and this is our opportunity to unhook the
296 * toepcb hanging off of it. If the TOE driver is also done with the toepcb (no
297 * pending CPL) then it is time to release all resources tied to the toepcb.
299 * Also gets called when an offloaded active open fails and the TOM wants the
300 * kernel to take the TCP PCB back.
303 t4_pcb_detach(struct toedev *tod __unused, struct tcpcb *tp)
305 #if defined(KTR) || defined(INVARIANTS)
306 struct inpcb *inp = tp->t_inpcb;
308 struct toepcb *toep = tp->t_toe;
310 INP_WLOCK_ASSERT(inp);
312 KASSERT(toep != NULL, ("%s: toep is NULL", __func__));
313 KASSERT(toep->flags & TPF_ATTACHED,
314 ("%s: not attached", __func__));
317 if (tp->t_state == TCPS_SYN_SENT) {
318 CTR6(KTR_CXGBE, "%s: atid %d, toep %p (0x%x), inp %p (0x%x)",
319 __func__, toep->tid, toep, toep->flags, inp,
323 "t4_pcb_detach: tid %d (%s), toep %p (0x%x), inp %p (0x%x)",
324 toep->tid, tcpstates[tp->t_state], toep, toep->flags, inp,
330 tp->t_flags &= ~TF_TOE;
331 toep->flags &= ~TPF_ATTACHED;
333 if (!(toep->flags & TPF_CPL_PENDING))
334 release_offload_resources(toep);
338 * setsockopt handler.
341 t4_ctloutput(struct toedev *tod, struct tcpcb *tp, int dir, int name)
343 struct adapter *sc = tod->tod_softc;
344 struct toepcb *toep = tp->t_toe;
349 CTR4(KTR_CXGBE, "%s: tp %p, dir %u, name %u", __func__, tp, dir, name);
353 t4_set_tcb_field(sc, toep, 1, W_TCB_T_FLAGS, V_TF_NAGLE(1),
354 V_TF_NAGLE(tp->t_flags & TF_NODELAY ? 0 : 1));
362 * The TOE driver will not receive any more CPLs for the tid associated with the
363 * toepcb; release the hold on the inpcb.
366 final_cpl_received(struct toepcb *toep)
368 struct inpcb *inp = toep->inp;
370 KASSERT(inp != NULL, ("%s: inp is NULL", __func__));
371 INP_WLOCK_ASSERT(inp);
372 KASSERT(toep->flags & TPF_CPL_PENDING,
373 ("%s: CPL not pending already?", __func__));
375 CTR6(KTR_CXGBE, "%s: tid %d, toep %p (0x%x), inp %p (0x%x)",
376 __func__, toep->tid, toep, toep->flags, inp, inp->inp_flags);
379 toep->flags &= ~TPF_CPL_PENDING;
381 if (!(toep->flags & TPF_ATTACHED))
382 release_offload_resources(toep);
384 if (!in_pcbrele_wlocked(inp))
389 insert_tid(struct adapter *sc, int tid, void *ctx)
391 struct tid_info *t = &sc->tids;
393 t->tid_tab[tid] = ctx;
394 atomic_add_int(&t->tids_in_use, 1);
398 lookup_tid(struct adapter *sc, int tid)
400 struct tid_info *t = &sc->tids;
402 return (t->tid_tab[tid]);
406 update_tid(struct adapter *sc, int tid, void *ctx)
408 struct tid_info *t = &sc->tids;
410 t->tid_tab[tid] = ctx;
414 remove_tid(struct adapter *sc, int tid)
416 struct tid_info *t = &sc->tids;
418 t->tid_tab[tid] = NULL;
419 atomic_subtract_int(&t->tids_in_use, 1);
423 release_tid(struct adapter *sc, int tid, struct sge_wrq *ctrlq)
426 struct cpl_tid_release *req;
428 wr = alloc_wrqe(sizeof(*req), ctrlq);
430 queue_tid_release(sc, tid); /* defer */
435 INIT_TP_WR_MIT_CPL(req, CPL_TID_RELEASE, tid);
441 queue_tid_release(struct adapter *sc, int tid)
444 CXGBE_UNIMPLEMENTED("deferred tid release");
448 * What mtu_idx to use, given a 4-tuple and/or an MSS cap
451 find_best_mtu_idx(struct adapter *sc, struct in_conninfo *inc, int pmss)
453 unsigned short *mtus = &sc->params.mtus[0];
456 KASSERT(inc != NULL || pmss > 0,
457 ("%s: at least one of inc/pmss must be specified", __func__));
459 mss = inc ? tcp_mssopt(inc) : pmss;
460 if (pmss > 0 && mss > pmss)
463 if (inc->inc_flags & INC_ISIPV6)
464 n = sizeof(struct ip6_hdr) + sizeof(struct tcphdr);
466 n = sizeof(struct ip) + sizeof(struct tcphdr);
468 for (i = 0; i < NMTUS - 1 && mtus[i + 1] <= mss + n; i++)
475 * Determine the receive window size for a socket.
478 select_rcv_wnd(struct socket *so)
482 SOCKBUF_LOCK_ASSERT(&so->so_rcv);
484 wnd = sbspace(&so->so_rcv);
485 if (wnd < MIN_RCV_WND)
488 return min(wnd, MAX_RCV_WND);
492 select_rcv_wscale(void)
495 unsigned long space = sb_max;
497 if (space > MAX_RCV_WND)
500 while (wscale < TCP_MAX_WINSHIFT && (TCP_MAXWIN << wscale) < space)
506 extern int always_keepalive;
507 #define VIID_SMACIDX(v) (((unsigned int)(v) & 0x7f) << 1)
510 * socket so could be a listening socket too.
513 calc_opt0(struct socket *so, struct port_info *pi, struct l2t_entry *e,
514 int mtu_idx, int rscale, int rx_credits, int ulp_mode)
518 KASSERT(rx_credits <= M_RCV_BUFSIZ,
519 ("%s: rcv_bufsiz too high", __func__));
521 opt0 = F_TCAM_BYPASS | V_WND_SCALE(rscale) | V_MSS_IDX(mtu_idx) |
522 V_ULP_MODE(ulp_mode) | V_RCV_BUFSIZ(rx_credits);
525 struct inpcb *inp = sotoinpcb(so);
526 struct tcpcb *tp = intotcpcb(inp);
527 int keepalive = always_keepalive ||
528 so_options_get(so) & SO_KEEPALIVE;
530 opt0 |= V_NAGLE((tp->t_flags & TF_NODELAY) == 0);
531 opt0 |= V_KEEP_ALIVE(keepalive != 0);
535 opt0 |= V_L2T_IDX(e->idx);
538 opt0 |= V_SMAC_SEL(VIID_SMACIDX(pi->viid));
539 opt0 |= V_TX_CHAN(pi->tx_chan);
542 return htobe64(opt0);
546 select_ntuple(struct port_info *pi, struct l2t_entry *e)
548 struct adapter *sc = pi->adapter;
549 struct tp_params *tp = &sc->params.tp;
550 uint16_t viid = pi->viid;
554 * Initialize each of the fields which we care about which are present
555 * in the Compressed Filter Tuple.
557 if (tp->vlan_shift >= 0 && e->vlan != CPL_L2T_VLAN_NONE)
558 ntuple |= (uint64_t)(F_FT_VLAN_VLD | e->vlan) << tp->vlan_shift;
560 if (tp->port_shift >= 0)
561 ntuple |= (uint64_t)e->lport << tp->port_shift;
563 if (tp->protocol_shift >= 0)
564 ntuple |= (uint64_t)IPPROTO_TCP << tp->protocol_shift;
566 if (tp->vnic_shift >= 0) {
567 uint32_t vf = G_FW_VIID_VIN(viid);
568 uint32_t pf = G_FW_VIID_PFN(viid);
569 uint32_t vld = G_FW_VIID_VIVLD(viid);
571 ntuple |= (uint64_t)(V_FT_VNID_ID_VF(vf) | V_FT_VNID_ID_PF(pf) |
572 V_FT_VNID_ID_VLD(vld)) << tp->vnic_shift;
576 return (htobe32((uint32_t)ntuple));
578 return (htobe64(V_FILTER_TUPLE(ntuple)));
582 set_tcpddp_ulp_mode(struct toepcb *toep)
585 toep->ulp_mode = ULP_MODE_TCPDDP;
586 toep->ddp_flags = DDP_OK;
587 toep->ddp_score = DDP_LOW_SCORE;
591 negative_advice(int status)
594 return (status == CPL_ERR_RTX_NEG_ADVICE ||
595 status == CPL_ERR_PERSIST_NEG_ADVICE ||
596 status == CPL_ERR_KEEPALV_NEG_ADVICE);
600 alloc_tid_tabs(struct tid_info *t)
605 size = t->ntids * sizeof(*t->tid_tab) +
606 t->natids * sizeof(*t->atid_tab) +
607 t->nstids * sizeof(*t->stid_tab);
609 t->tid_tab = malloc(size, M_CXGBE, M_ZERO | M_NOWAIT);
610 if (t->tid_tab == NULL)
613 mtx_init(&t->atid_lock, "atid lock", NULL, MTX_DEF);
614 t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids];
615 t->afree = t->atid_tab;
617 for (i = 1; i < t->natids; i++)
618 t->atid_tab[i - 1].next = &t->atid_tab[i];
619 t->atid_tab[t->natids - 1].next = NULL;
621 mtx_init(&t->stid_lock, "stid lock", NULL, MTX_DEF);
622 t->stid_tab = (struct listen_ctx **)&t->atid_tab[t->natids];
624 TAILQ_INIT(&t->stids);
625 t->nstids_free_head = t->nstids;
627 atomic_store_rel_int(&t->tids_in_use, 0);
633 free_tid_tabs(struct tid_info *t)
635 KASSERT(t->tids_in_use == 0,
636 ("%s: %d tids still in use.", __func__, t->tids_in_use));
637 KASSERT(t->atids_in_use == 0,
638 ("%s: %d atids still in use.", __func__, t->atids_in_use));
639 KASSERT(t->stids_in_use == 0,
640 ("%s: %d tids still in use.", __func__, t->stids_in_use));
642 free(t->tid_tab, M_CXGBE);
645 if (mtx_initialized(&t->atid_lock))
646 mtx_destroy(&t->atid_lock);
647 if (mtx_initialized(&t->stid_lock))
648 mtx_destroy(&t->stid_lock);
652 add_lip(struct adapter *sc, struct in6_addr *lip)
654 struct fw_clip_cmd c;
656 ASSERT_SYNCHRONIZED_OP(sc);
657 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */
659 memset(&c, 0, sizeof(c));
660 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST |
662 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_ALLOC | FW_LEN16(c));
663 c.ip_hi = *(uint64_t *)&lip->s6_addr[0];
664 c.ip_lo = *(uint64_t *)&lip->s6_addr[8];
666 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c));
670 delete_lip(struct adapter *sc, struct in6_addr *lip)
672 struct fw_clip_cmd c;
674 ASSERT_SYNCHRONIZED_OP(sc);
675 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */
677 memset(&c, 0, sizeof(c));
678 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST |
680 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_FREE | FW_LEN16(c));
681 c.ip_hi = *(uint64_t *)&lip->s6_addr[0];
682 c.ip_lo = *(uint64_t *)&lip->s6_addr[8];
684 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c));
687 static struct clip_entry *
688 search_lip(struct tom_data *td, struct in6_addr *lip)
690 struct clip_entry *ce;
692 mtx_assert(&td->clip_table_lock, MA_OWNED);
694 TAILQ_FOREACH(ce, &td->clip_table, link) {
695 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip))
703 hold_lip(struct tom_data *td, struct in6_addr *lip)
705 struct clip_entry *ce;
707 mtx_lock(&td->clip_table_lock);
708 ce = search_lip(td, lip);
711 mtx_unlock(&td->clip_table_lock);
717 release_lip(struct tom_data *td, struct clip_entry *ce)
720 mtx_lock(&td->clip_table_lock);
721 KASSERT(search_lip(td, &ce->lip) == ce,
722 ("%s: CLIP entry %p p not in CLIP table.", __func__, ce));
723 KASSERT(ce->refcount > 0,
724 ("%s: CLIP entry %p has refcount 0", __func__, ce));
726 mtx_unlock(&td->clip_table_lock);
730 init_clip_table(struct adapter *sc, struct tom_data *td)
733 ASSERT_SYNCHRONIZED_OP(sc);
735 mtx_init(&td->clip_table_lock, "CLIP table lock", NULL, MTX_DEF);
736 TAILQ_INIT(&td->clip_table);
739 update_clip_table(sc, td);
743 update_clip(struct adapter *sc, void *arg __unused)
746 if (begin_synchronized_op(sc, NULL, HOLD_LOCK, "t4tomuc"))
749 if (sc->flags & TOM_INIT_DONE)
750 update_clip_table(sc, sc->tom_softc);
752 end_synchronized_op(sc, LOCK_HELD);
756 t4_clip_task(void *arg, int count)
759 t4_iterate(update_clip, NULL);
763 update_clip_table(struct adapter *sc, struct tom_data *td)
765 struct in6_ifaddr *ia;
766 struct in6_addr *lip, tlip;
767 struct clip_head stale;
768 struct clip_entry *ce, *ce_temp;
769 int rc, gen = atomic_load_acq_int(&in6_ifaddr_gen);
771 ASSERT_SYNCHRONIZED_OP(sc);
774 mtx_lock(&td->clip_table_lock);
776 if (gen == td->clip_gen)
780 TAILQ_CONCAT(&stale, &td->clip_table, link);
782 TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) {
783 lip = &ia->ia_addr.sin6_addr;
785 KASSERT(!IN6_IS_ADDR_MULTICAST(lip),
786 ("%s: mcast address in in6_ifaddr list", __func__));
788 if (IN6_IS_ADDR_LOOPBACK(lip))
790 if (IN6_IS_SCOPE_EMBED(lip)) {
791 /* Remove the embedded scope */
797 * XXX: how to weed out the link local address for the loopback
798 * interface? It's fe80::1 usually (always?).
802 * If it's in the main list then we already know it's not stale.
804 TAILQ_FOREACH(ce, &td->clip_table, link) {
805 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip))
810 * If it's in the stale list we should move it to the main list.
812 TAILQ_FOREACH(ce, &stale, link) {
813 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) {
814 TAILQ_REMOVE(&stale, ce, link);
815 TAILQ_INSERT_TAIL(&td->clip_table, ce, link);
820 /* A new IP6 address; add it to the CLIP table */
821 ce = malloc(sizeof(*ce), M_CXGBE, M_NOWAIT);
822 memcpy(&ce->lip, lip, sizeof(ce->lip));
824 rc = add_lip(sc, lip);
826 TAILQ_INSERT_TAIL(&td->clip_table, ce, link);
828 char ip[INET6_ADDRSTRLEN];
830 inet_ntop(AF_INET6, &ce->lip, &ip[0], sizeof(ip));
831 log(LOG_ERR, "%s: could not add %s (%d)\n",
840 * Remove stale addresses (those no longer in V_in6_ifaddrhead) that are
841 * no longer referenced by the driver.
843 TAILQ_FOREACH_SAFE(ce, &stale, link, ce_temp) {
844 if (ce->refcount == 0) {
845 rc = delete_lip(sc, &ce->lip);
847 TAILQ_REMOVE(&stale, ce, link);
850 char ip[INET6_ADDRSTRLEN];
852 inet_ntop(AF_INET6, &ce->lip, &ip[0],
854 log(LOG_ERR, "%s: could not delete %s (%d)\n",
859 /* The ones that are still referenced need to stay in the CLIP table */
860 TAILQ_CONCAT(&td->clip_table, &stale, link);
864 mtx_unlock(&td->clip_table_lock);
865 IN6_IFADDR_RUNLOCK();
869 destroy_clip_table(struct adapter *sc, struct tom_data *td)
871 struct clip_entry *ce, *ce_temp;
873 if (mtx_initialized(&td->clip_table_lock)) {
874 mtx_lock(&td->clip_table_lock);
875 TAILQ_FOREACH_SAFE(ce, &td->clip_table, link, ce_temp) {
876 KASSERT(ce->refcount == 0,
877 ("%s: CLIP entry %p still in use (%d)", __func__,
879 TAILQ_REMOVE(&td->clip_table, ce, link);
880 delete_lip(sc, &ce->lip);
883 mtx_unlock(&td->clip_table_lock);
884 mtx_destroy(&td->clip_table_lock);
889 free_tom_data(struct adapter *sc, struct tom_data *td)
892 ASSERT_SYNCHRONIZED_OP(sc);
894 KASSERT(TAILQ_EMPTY(&td->toep_list),
895 ("%s: TOE PCB list is not empty.", __func__));
896 KASSERT(td->lctx_count == 0,
897 ("%s: lctx hash table is not empty.", __func__));
899 t4_uninit_l2t_cpl_handlers(sc);
900 t4_uninit_cpl_io_handlers(sc);
901 t4_uninit_ddp(sc, td);
902 destroy_clip_table(sc, td);
904 if (td->listen_mask != 0)
905 hashdestroy(td->listen_hash, M_CXGBE, td->listen_mask);
907 if (mtx_initialized(&td->unsent_wr_lock))
908 mtx_destroy(&td->unsent_wr_lock);
909 if (mtx_initialized(&td->lctx_hash_lock))
910 mtx_destroy(&td->lctx_hash_lock);
911 if (mtx_initialized(&td->toep_list_lock))
912 mtx_destroy(&td->toep_list_lock);
914 free_tid_tabs(&sc->tids);
919 reclaim_wr_resources(void *arg, int count)
921 struct tom_data *td = arg;
922 STAILQ_HEAD(, wrqe) twr_list = STAILQ_HEAD_INITIALIZER(twr_list);
923 struct cpl_act_open_req *cpl;
928 mtx_lock(&td->unsent_wr_lock);
929 STAILQ_SWAP(&td->unsent_wr_list, &twr_list, wrqe);
930 mtx_unlock(&td->unsent_wr_lock);
932 while ((wr = STAILQ_FIRST(&twr_list)) != NULL) {
933 STAILQ_REMOVE_HEAD(&twr_list, link);
936 opcode = GET_OPCODE(cpl);
939 case CPL_ACT_OPEN_REQ:
940 case CPL_ACT_OPEN_REQ6:
941 atid = G_TID_TID(be32toh(OPCODE_TID(cpl)));
944 CTR2(KTR_CXGBE, "%s: atid %u ", __func__, atid);
945 act_open_failure_cleanup(sc, atid, EHOSTUNREACH);
949 log(LOG_ERR, "%s: leaked work request %p, wr_len %d, "
950 "opcode %x\n", __func__, wr, wr->wr_len, opcode);
951 /* WR not freed here; go look at it with a debugger. */
957 * Ground control to Major TOM
958 * Commencing countdown, engines on
961 t4_tom_activate(struct adapter *sc)
967 ASSERT_SYNCHRONIZED_OP(sc);
969 /* per-adapter softc for TOM */
970 td = malloc(sizeof(*td), M_CXGBE, M_ZERO | M_NOWAIT);
974 /* List of TOE PCBs and associated lock */
975 mtx_init(&td->toep_list_lock, "PCB list lock", NULL, MTX_DEF);
976 TAILQ_INIT(&td->toep_list);
979 mtx_init(&td->lctx_hash_lock, "lctx hash lock", NULL, MTX_DEF);
980 td->listen_hash = hashinit_flags(LISTEN_HASH_SIZE, M_CXGBE,
981 &td->listen_mask, HASH_NOWAIT);
983 /* List of WRs for which L2 resolution failed */
984 mtx_init(&td->unsent_wr_lock, "Unsent WR list lock", NULL, MTX_DEF);
985 STAILQ_INIT(&td->unsent_wr_list);
986 TASK_INIT(&td->reclaim_wr_resources, 0, reclaim_wr_resources, td);
989 rc = alloc_tid_tabs(&sc->tids);
993 /* DDP page pods and CPL handlers */
996 /* CLIP table for IPv6 offload */
997 init_clip_table(sc, td);
1000 t4_init_connect_cpl_handlers(sc);
1001 t4_init_l2t_cpl_handlers(sc);
1002 t4_init_listen_cpl_handlers(sc);
1003 t4_init_cpl_io_handlers(sc);
1008 tod->tod_softc = sc;
1009 tod->tod_connect = t4_connect;
1010 tod->tod_listen_start = t4_listen_start;
1011 tod->tod_listen_stop = t4_listen_stop;
1012 tod->tod_rcvd = t4_rcvd;
1013 tod->tod_output = t4_tod_output;
1014 tod->tod_send_rst = t4_send_rst;
1015 tod->tod_send_fin = t4_send_fin;
1016 tod->tod_pcb_detach = t4_pcb_detach;
1017 tod->tod_l2_update = t4_l2_update;
1018 tod->tod_syncache_added = t4_syncache_added;
1019 tod->tod_syncache_removed = t4_syncache_removed;
1020 tod->tod_syncache_respond = t4_syncache_respond;
1021 tod->tod_offload_socket = t4_offload_socket;
1022 tod->tod_ctloutput = t4_ctloutput;
1024 for_each_port(sc, i)
1025 TOEDEV(sc->port[i]->ifp) = &td->tod;
1028 sc->flags |= TOM_INIT_DONE;
1029 register_toedev(sc->tom_softc);
1033 free_tom_data(sc, td);
1038 t4_tom_deactivate(struct adapter *sc)
1041 struct tom_data *td = sc->tom_softc;
1043 ASSERT_SYNCHRONIZED_OP(sc);
1046 return (0); /* XXX. KASSERT? */
1048 if (sc->offload_map != 0)
1049 return (EBUSY); /* at least one port has IFCAP_TOE enabled */
1051 mtx_lock(&td->toep_list_lock);
1052 if (!TAILQ_EMPTY(&td->toep_list))
1054 mtx_unlock(&td->toep_list_lock);
1056 mtx_lock(&td->lctx_hash_lock);
1057 if (td->lctx_count > 0)
1059 mtx_unlock(&td->lctx_hash_lock);
1061 taskqueue_drain(taskqueue_thread, &td->reclaim_wr_resources);
1062 mtx_lock(&td->unsent_wr_lock);
1063 if (!STAILQ_EMPTY(&td->unsent_wr_list))
1065 mtx_unlock(&td->unsent_wr_lock);
1068 unregister_toedev(sc->tom_softc);
1069 free_tom_data(sc, td);
1070 sc->tom_softc = NULL;
1071 sc->flags &= ~TOM_INIT_DONE;
1078 t4_tom_ifaddr_event(void *arg __unused, struct ifnet *ifp)
1081 atomic_add_rel_int(&in6_ifaddr_gen, 1);
1082 taskqueue_enqueue_timeout(taskqueue_thread, &clip_task, -hz / 4);
1086 t4_tom_mod_load(void)
1089 struct protosw *tcp_protosw, *tcp6_protosw;
1091 tcp_protosw = pffindproto(PF_INET, IPPROTO_TCP, SOCK_STREAM);
1092 if (tcp_protosw == NULL)
1093 return (ENOPROTOOPT);
1094 bcopy(tcp_protosw, &ddp_protosw, sizeof(ddp_protosw));
1095 bcopy(tcp_protosw->pr_usrreqs, &ddp_usrreqs, sizeof(ddp_usrreqs));
1096 ddp_usrreqs.pru_soreceive = t4_soreceive_ddp;
1097 ddp_protosw.pr_usrreqs = &ddp_usrreqs;
1099 tcp6_protosw = pffindproto(PF_INET6, IPPROTO_TCP, SOCK_STREAM);
1100 if (tcp6_protosw == NULL)
1101 return (ENOPROTOOPT);
1102 bcopy(tcp6_protosw, &ddp6_protosw, sizeof(ddp6_protosw));
1103 bcopy(tcp6_protosw->pr_usrreqs, &ddp6_usrreqs, sizeof(ddp6_usrreqs));
1104 ddp6_usrreqs.pru_soreceive = t4_soreceive_ddp;
1105 ddp6_protosw.pr_usrreqs = &ddp6_usrreqs;
1107 TIMEOUT_TASK_INIT(taskqueue_thread, &clip_task, 0, t4_clip_task, NULL);
1108 ifaddr_evhandler = EVENTHANDLER_REGISTER(ifaddr_event,
1109 t4_tom_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY);
1111 rc = t4_register_uld(&tom_uld_info);
1113 t4_tom_mod_unload();
1119 tom_uninit(struct adapter *sc, void *arg __unused)
1121 if (begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4tomun"))
1124 /* Try to free resources (works only if no port has IFCAP_TOE) */
1125 if (sc->flags & TOM_INIT_DONE)
1126 t4_deactivate_uld(sc, ULD_TOM);
1128 end_synchronized_op(sc, 0);
1132 t4_tom_mod_unload(void)
1134 t4_iterate(tom_uninit, NULL);
1136 if (t4_unregister_uld(&tom_uld_info) == EBUSY)
1139 if (ifaddr_evhandler) {
1140 EVENTHANDLER_DEREGISTER(ifaddr_event, ifaddr_evhandler);
1141 taskqueue_cancel_timeout(taskqueue_thread, &clip_task, NULL);
1146 #endif /* TCP_OFFLOAD */
1149 t4_tom_modevent(module_t mod, int cmd, void *arg)
1156 rc = t4_tom_mod_load();
1160 rc = t4_tom_mod_unload();
1167 printf("t4_tom: compiled without TCP_OFFLOAD support.\n");
1173 static moduledata_t t4_tom_moddata= {
1179 MODULE_VERSION(t4_tom, 1);
1180 MODULE_DEPEND(t4_tom, toecore, 1, 1, 1);
1181 MODULE_DEPEND(t4_tom, t4nex, 1, 1, 1);
1182 DECLARE_MODULE(t4_tom, t4_tom_moddata, SI_SUB_EXEC, SI_ORDER_ANY);