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"
33 #include "opt_ratelimit.h"
35 #include <sys/param.h>
36 #include <sys/types.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
41 #include <sys/limits.h>
42 #include <sys/module.h>
43 #include <sys/protosw.h>
44 #include <sys/domain.h>
45 #include <sys/refcount.h>
46 #include <sys/rmlock.h>
47 #include <sys/socket.h>
48 #include <sys/socketvar.h>
49 #include <sys/taskqueue.h>
51 #include <net/if_var.h>
52 #include <netinet/in.h>
53 #include <netinet/in_pcb.h>
54 #include <netinet/in_var.h>
55 #include <netinet/ip.h>
56 #include <netinet/ip6.h>
57 #include <netinet6/scope6_var.h>
59 #include <netinet/tcp_fsm.h>
60 #include <netinet/tcp_var.h>
61 #include <netinet/toecore.h>
64 #include "common/common.h"
65 #include "common/t4_msg.h"
66 #include "common/t4_regs.h"
67 #include "common/t4_regs_values.h"
68 #include "common/t4_tcb.h"
69 #include "tom/t4_tom_l2t.h"
70 #include "tom/t4_tom.h"
72 static struct protosw toe_protosw;
73 static struct pr_usrreqs toe_usrreqs;
75 static struct protosw toe6_protosw;
76 static struct pr_usrreqs toe6_usrreqs;
79 static int t4_tom_mod_load(void);
80 static int t4_tom_mod_unload(void);
81 static int t4_tom_modevent(module_t, int, void *);
83 /* ULD ops and helpers */
84 static int t4_tom_activate(struct adapter *);
85 static int t4_tom_deactivate(struct adapter *);
87 static struct uld_info tom_uld_info = {
89 .activate = t4_tom_activate,
90 .deactivate = t4_tom_deactivate,
93 static void queue_tid_release(struct adapter *, int);
94 static void release_offload_resources(struct toepcb *);
95 static int alloc_tid_tabs(struct tid_info *);
96 static void free_tid_tabs(struct tid_info *);
97 static int add_lip(struct adapter *, struct in6_addr *);
98 static int delete_lip(struct adapter *, struct in6_addr *);
99 static struct clip_entry *search_lip(struct tom_data *, struct in6_addr *);
100 static void init_clip_table(struct adapter *, struct tom_data *);
101 static void update_clip(struct adapter *, void *);
102 static void t4_clip_task(void *, int);
103 static void update_clip_table(struct adapter *, struct tom_data *);
104 static void destroy_clip_table(struct adapter *, struct tom_data *);
105 static void free_tom_data(struct adapter *, struct tom_data *);
106 static void reclaim_wr_resources(void *, int);
108 static int in6_ifaddr_gen;
109 static eventhandler_tag ifaddr_evhandler;
110 static struct timeout_task clip_task;
113 alloc_toepcb(struct vi_info *vi, int txqid, int rxqid, int flags)
115 struct port_info *pi = vi->pi;
116 struct adapter *sc = pi->adapter;
118 int tx_credits, txsd_total, len;
121 * The firmware counts tx work request credits in units of 16 bytes
122 * each. Reserve room for an ABORT_REQ so the driver never has to worry
123 * about tx credits if it wants to abort a connection.
125 tx_credits = sc->params.ofldq_wr_cred;
126 tx_credits -= howmany(sizeof(struct cpl_abort_req), 16);
129 * Shortest possible tx work request is a fw_ofld_tx_data_wr + 1 byte
130 * immediate payload, and firmware counts tx work request credits in
131 * units of 16 byte. Calculate the maximum work requests possible.
133 txsd_total = tx_credits /
134 howmany(sizeof(struct fw_ofld_tx_data_wr) + 1, 16);
137 txqid = (arc4random() % vi->nofldtxq) + vi->first_ofld_txq;
138 KASSERT(txqid >= vi->first_ofld_txq &&
139 txqid < vi->first_ofld_txq + vi->nofldtxq,
140 ("%s: txqid %d for vi %p (first %d, n %d)", __func__, txqid, vi,
141 vi->first_ofld_txq, vi->nofldtxq));
144 rxqid = (arc4random() % vi->nofldrxq) + vi->first_ofld_rxq;
145 KASSERT(rxqid >= vi->first_ofld_rxq &&
146 rxqid < vi->first_ofld_rxq + vi->nofldrxq,
147 ("%s: rxqid %d for vi %p (first %d, n %d)", __func__, rxqid, vi,
148 vi->first_ofld_rxq, vi->nofldrxq));
150 len = offsetof(struct toepcb, txsd) +
151 txsd_total * sizeof(struct ofld_tx_sdesc);
153 toep = malloc(len, M_CXGBE, M_ZERO | flags);
157 refcount_init(&toep->refcount, 1);
158 toep->td = sc->tom_softc;
161 toep->tx_total = tx_credits;
162 toep->tx_credits = tx_credits;
163 toep->ofld_txq = &sc->sge.ofld_txq[txqid];
164 toep->ofld_rxq = &sc->sge.ofld_rxq[rxqid];
165 toep->ctrlq = &sc->sge.ctrlq[pi->port_id];
166 mbufq_init(&toep->ulp_pduq, INT_MAX);
167 mbufq_init(&toep->ulp_pdu_reclaimq, INT_MAX);
168 toep->txsd_total = txsd_total;
169 toep->txsd_avail = txsd_total;
172 aiotx_init_toep(toep);
179 hold_toepcb(struct toepcb *toep)
182 refcount_acquire(&toep->refcount);
187 free_toepcb(struct toepcb *toep)
190 if (refcount_release(&toep->refcount) == 0)
193 KASSERT(!(toep->flags & TPF_ATTACHED),
194 ("%s: attached to an inpcb", __func__));
195 KASSERT(!(toep->flags & TPF_CPL_PENDING),
196 ("%s: CPL pending", __func__));
198 ddp_uninit_toep(toep);
203 * Set up the socket for TCP offload.
206 offload_socket(struct socket *so, struct toepcb *toep)
208 struct tom_data *td = toep->td;
209 struct inpcb *inp = sotoinpcb(so);
210 struct tcpcb *tp = intotcpcb(inp);
213 INP_WLOCK_ASSERT(inp);
218 sb->sb_flags |= SB_NOCOALESCE;
222 sb->sb_flags |= SB_NOCOALESCE;
223 if (inp->inp_vflag & INP_IPV6)
224 so->so_proto = &toe6_protosw;
226 so->so_proto = &toe_protosw;
232 tp->t_flags |= TF_TOE;
234 /* Install an extra hold on inp */
236 toep->flags |= TPF_ATTACHED;
239 /* Add the TOE PCB to the active list */
240 mtx_lock(&td->toep_list_lock);
241 TAILQ_INSERT_HEAD(&td->toep_list, toep, link);
242 mtx_unlock(&td->toep_list_lock);
245 /* This is _not_ the normal way to "unoffload" a socket. */
247 undo_offload_socket(struct socket *so)
249 struct inpcb *inp = sotoinpcb(so);
250 struct tcpcb *tp = intotcpcb(inp);
251 struct toepcb *toep = tp->t_toe;
252 struct tom_data *td = toep->td;
255 INP_WLOCK_ASSERT(inp);
259 sb->sb_flags &= ~SB_NOCOALESCE;
263 sb->sb_flags &= ~SB_NOCOALESCE;
268 tp->t_flags &= ~TF_TOE;
271 toep->flags &= ~TPF_ATTACHED;
272 if (in_pcbrele_wlocked(inp))
273 panic("%s: inp freed.", __func__);
275 mtx_lock(&td->toep_list_lock);
276 TAILQ_REMOVE(&td->toep_list, toep, link);
277 mtx_unlock(&td->toep_list_lock);
281 release_offload_resources(struct toepcb *toep)
283 struct tom_data *td = toep->td;
284 struct adapter *sc = td_adapter(td);
287 KASSERT(!(toep->flags & TPF_CPL_PENDING),
288 ("%s: %p has CPL pending.", __func__, toep));
289 KASSERT(!(toep->flags & TPF_ATTACHED),
290 ("%s: %p is still attached.", __func__, toep));
292 CTR5(KTR_CXGBE, "%s: toep %p (tid %d, l2te %p, ce %p)",
293 __func__, toep, tid, toep->l2te, toep->ce);
296 * These queues should have been emptied at approximately the same time
297 * that a normal connection's socket's so_snd would have been purged or
298 * drained. Do _not_ clean up here.
300 MPASS(mbufq_len(&toep->ulp_pduq) == 0);
301 MPASS(mbufq_len(&toep->ulp_pdu_reclaimq) == 0);
303 ddp_assert_empty(toep);
307 t4_l2t_release(toep->l2te);
310 remove_tid(sc, tid, toep->ce ? 2 : 1);
311 release_tid(sc, tid, toep->ctrlq);
315 release_lip(td, toep->ce);
318 if (toep->tc_idx != -1)
319 t4_release_cl_rl_kbps(sc, toep->vi->pi->port_id, toep->tc_idx);
321 mtx_lock(&td->toep_list_lock);
322 TAILQ_REMOVE(&td->toep_list, toep, link);
323 mtx_unlock(&td->toep_list_lock);
329 * The kernel is done with the TCP PCB and this is our opportunity to unhook the
330 * toepcb hanging off of it. If the TOE driver is also done with the toepcb (no
331 * pending CPL) then it is time to release all resources tied to the toepcb.
333 * Also gets called when an offloaded active open fails and the TOM wants the
334 * kernel to take the TCP PCB back.
337 t4_pcb_detach(struct toedev *tod __unused, struct tcpcb *tp)
339 #if defined(KTR) || defined(INVARIANTS)
340 struct inpcb *inp = tp->t_inpcb;
342 struct toepcb *toep = tp->t_toe;
344 INP_WLOCK_ASSERT(inp);
346 KASSERT(toep != NULL, ("%s: toep is NULL", __func__));
347 KASSERT(toep->flags & TPF_ATTACHED,
348 ("%s: not attached", __func__));
351 if (tp->t_state == TCPS_SYN_SENT) {
352 CTR6(KTR_CXGBE, "%s: atid %d, toep %p (0x%x), inp %p (0x%x)",
353 __func__, toep->tid, toep, toep->flags, inp,
357 "t4_pcb_detach: tid %d (%s), toep %p (0x%x), inp %p (0x%x)",
358 toep->tid, tcpstates[tp->t_state], toep, toep->flags, inp,
364 tp->t_flags &= ~TF_TOE;
365 toep->flags &= ~TPF_ATTACHED;
367 if (!(toep->flags & TPF_CPL_PENDING))
368 release_offload_resources(toep);
372 * setsockopt handler.
375 t4_ctloutput(struct toedev *tod, struct tcpcb *tp, int dir, int name)
377 struct adapter *sc = tod->tod_softc;
378 struct toepcb *toep = tp->t_toe;
383 CTR4(KTR_CXGBE, "%s: tp %p, dir %u, name %u", __func__, tp, dir, name);
387 t4_set_tcb_field(sc, toep->ctrlq, toep->tid, W_TCB_T_FLAGS,
388 V_TF_NAGLE(1), V_TF_NAGLE(tp->t_flags & TF_NODELAY ? 0 : 1),
389 0, 0, toep->ofld_rxq->iq.abs_id);
397 * The TOE driver will not receive any more CPLs for the tid associated with the
398 * toepcb; release the hold on the inpcb.
401 final_cpl_received(struct toepcb *toep)
403 struct inpcb *inp = toep->inp;
405 KASSERT(inp != NULL, ("%s: inp is NULL", __func__));
406 INP_WLOCK_ASSERT(inp);
407 KASSERT(toep->flags & TPF_CPL_PENDING,
408 ("%s: CPL not pending already?", __func__));
410 CTR6(KTR_CXGBE, "%s: tid %d, toep %p (0x%x), inp %p (0x%x)",
411 __func__, toep->tid, toep, toep->flags, inp, inp->inp_flags);
413 if (toep->ulp_mode == ULP_MODE_TCPDDP)
414 release_ddp_resources(toep);
416 toep->flags &= ~TPF_CPL_PENDING;
417 mbufq_drain(&toep->ulp_pdu_reclaimq);
419 if (!(toep->flags & TPF_ATTACHED))
420 release_offload_resources(toep);
422 if (!in_pcbrele_wlocked(inp))
427 insert_tid(struct adapter *sc, int tid, void *ctx, int ntids)
429 struct tid_info *t = &sc->tids;
431 t->tid_tab[tid] = ctx;
432 atomic_add_int(&t->tids_in_use, ntids);
436 lookup_tid(struct adapter *sc, int tid)
438 struct tid_info *t = &sc->tids;
440 return (t->tid_tab[tid]);
444 update_tid(struct adapter *sc, int tid, void *ctx)
446 struct tid_info *t = &sc->tids;
448 t->tid_tab[tid] = ctx;
452 remove_tid(struct adapter *sc, int tid, int ntids)
454 struct tid_info *t = &sc->tids;
456 t->tid_tab[tid] = NULL;
457 atomic_subtract_int(&t->tids_in_use, ntids);
461 release_tid(struct adapter *sc, int tid, struct sge_wrq *ctrlq)
464 struct cpl_tid_release *req;
466 wr = alloc_wrqe(sizeof(*req), ctrlq);
468 queue_tid_release(sc, tid); /* defer */
473 INIT_TP_WR_MIT_CPL(req, CPL_TID_RELEASE, tid);
479 queue_tid_release(struct adapter *sc, int tid)
482 CXGBE_UNIMPLEMENTED("deferred tid release");
486 * What mtu_idx to use, given a 4-tuple and/or an MSS cap
489 find_best_mtu_idx(struct adapter *sc, struct in_conninfo *inc, int pmss)
491 unsigned short *mtus = &sc->params.mtus[0];
494 KASSERT(inc != NULL || pmss > 0,
495 ("%s: at least one of inc/pmss must be specified", __func__));
497 mss = inc ? tcp_mssopt(inc) : pmss;
498 if (pmss > 0 && mss > pmss)
501 if (inc->inc_flags & INC_ISIPV6)
502 n = sizeof(struct ip6_hdr) + sizeof(struct tcphdr);
504 n = sizeof(struct ip) + sizeof(struct tcphdr);
506 for (i = 0; i < NMTUS - 1 && mtus[i + 1] <= mss + n; i++)
513 * Determine the receive window size for a socket.
516 select_rcv_wnd(struct socket *so)
520 SOCKBUF_LOCK_ASSERT(&so->so_rcv);
522 wnd = sbspace(&so->so_rcv);
523 if (wnd < MIN_RCV_WND)
526 return min(wnd, MAX_RCV_WND);
530 select_rcv_wscale(void)
533 unsigned long space = sb_max;
535 if (space > MAX_RCV_WND)
538 while (wscale < TCP_MAX_WINSHIFT && (TCP_MAXWIN << wscale) < space)
544 extern int always_keepalive;
547 * socket so could be a listening socket too.
550 calc_opt0(struct socket *so, struct vi_info *vi, struct l2t_entry *e,
551 int mtu_idx, int rscale, int rx_credits, int ulp_mode)
555 KASSERT(rx_credits <= M_RCV_BUFSIZ,
556 ("%s: rcv_bufsiz too high", __func__));
558 opt0 = F_TCAM_BYPASS | V_WND_SCALE(rscale) | V_MSS_IDX(mtu_idx) |
559 V_ULP_MODE(ulp_mode) | V_RCV_BUFSIZ(rx_credits);
562 struct inpcb *inp = sotoinpcb(so);
563 struct tcpcb *tp = intotcpcb(inp);
564 int keepalive = always_keepalive ||
565 so_options_get(so) & SO_KEEPALIVE;
567 opt0 |= V_NAGLE((tp->t_flags & TF_NODELAY) == 0);
568 opt0 |= V_KEEP_ALIVE(keepalive != 0);
572 opt0 |= V_L2T_IDX(e->idx);
575 opt0 |= V_SMAC_SEL(vi->smt_idx);
576 opt0 |= V_TX_CHAN(vi->pi->tx_chan);
579 return htobe64(opt0);
583 select_ntuple(struct vi_info *vi, struct l2t_entry *e)
585 struct adapter *sc = vi->pi->adapter;
586 struct tp_params *tp = &sc->params.tp;
587 uint16_t viid = vi->viid;
591 * Initialize each of the fields which we care about which are present
592 * in the Compressed Filter Tuple.
594 if (tp->vlan_shift >= 0 && e->vlan != CPL_L2T_VLAN_NONE)
595 ntuple |= (uint64_t)(F_FT_VLAN_VLD | e->vlan) << tp->vlan_shift;
597 if (tp->port_shift >= 0)
598 ntuple |= (uint64_t)e->lport << tp->port_shift;
600 if (tp->protocol_shift >= 0)
601 ntuple |= (uint64_t)IPPROTO_TCP << tp->protocol_shift;
603 if (tp->vnic_shift >= 0) {
604 uint32_t vf = G_FW_VIID_VIN(viid);
605 uint32_t pf = G_FW_VIID_PFN(viid);
606 uint32_t vld = G_FW_VIID_VIVLD(viid);
608 ntuple |= (uint64_t)(V_FT_VNID_ID_VF(vf) | V_FT_VNID_ID_PF(pf) |
609 V_FT_VNID_ID_VLD(vld)) << tp->vnic_shift;
613 return (htobe32((uint32_t)ntuple));
615 return (htobe64(V_FILTER_TUPLE(ntuple)));
619 set_tcpddp_ulp_mode(struct toepcb *toep)
622 toep->ulp_mode = ULP_MODE_TCPDDP;
623 toep->ddp_flags = DDP_OK;
627 negative_advice(int status)
630 return (status == CPL_ERR_RTX_NEG_ADVICE ||
631 status == CPL_ERR_PERSIST_NEG_ADVICE ||
632 status == CPL_ERR_KEEPALV_NEG_ADVICE);
636 alloc_tid_tabs(struct tid_info *t)
641 size = t->ntids * sizeof(*t->tid_tab) +
642 t->natids * sizeof(*t->atid_tab) +
643 t->nstids * sizeof(*t->stid_tab);
645 t->tid_tab = malloc(size, M_CXGBE, M_ZERO | M_NOWAIT);
646 if (t->tid_tab == NULL)
649 mtx_init(&t->atid_lock, "atid lock", NULL, MTX_DEF);
650 t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids];
651 t->afree = t->atid_tab;
653 for (i = 1; i < t->natids; i++)
654 t->atid_tab[i - 1].next = &t->atid_tab[i];
655 t->atid_tab[t->natids - 1].next = NULL;
657 mtx_init(&t->stid_lock, "stid lock", NULL, MTX_DEF);
658 t->stid_tab = (struct listen_ctx **)&t->atid_tab[t->natids];
660 TAILQ_INIT(&t->stids);
661 t->nstids_free_head = t->nstids;
663 atomic_store_rel_int(&t->tids_in_use, 0);
669 free_tid_tabs(struct tid_info *t)
671 KASSERT(t->tids_in_use == 0,
672 ("%s: %d tids still in use.", __func__, t->tids_in_use));
673 KASSERT(t->atids_in_use == 0,
674 ("%s: %d atids still in use.", __func__, t->atids_in_use));
675 KASSERT(t->stids_in_use == 0,
676 ("%s: %d tids still in use.", __func__, t->stids_in_use));
678 free(t->tid_tab, M_CXGBE);
681 if (mtx_initialized(&t->atid_lock))
682 mtx_destroy(&t->atid_lock);
683 if (mtx_initialized(&t->stid_lock))
684 mtx_destroy(&t->stid_lock);
688 add_lip(struct adapter *sc, struct in6_addr *lip)
690 struct fw_clip_cmd c;
692 ASSERT_SYNCHRONIZED_OP(sc);
693 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */
695 memset(&c, 0, sizeof(c));
696 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST |
698 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_ALLOC | FW_LEN16(c));
699 c.ip_hi = *(uint64_t *)&lip->s6_addr[0];
700 c.ip_lo = *(uint64_t *)&lip->s6_addr[8];
702 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c));
706 delete_lip(struct adapter *sc, struct in6_addr *lip)
708 struct fw_clip_cmd c;
710 ASSERT_SYNCHRONIZED_OP(sc);
711 /* mtx_assert(&td->clip_table_lock, MA_OWNED); */
713 memset(&c, 0, sizeof(c));
714 c.op_to_write = htonl(V_FW_CMD_OP(FW_CLIP_CMD) | F_FW_CMD_REQUEST |
716 c.alloc_to_len16 = htonl(F_FW_CLIP_CMD_FREE | FW_LEN16(c));
717 c.ip_hi = *(uint64_t *)&lip->s6_addr[0];
718 c.ip_lo = *(uint64_t *)&lip->s6_addr[8];
720 return (-t4_wr_mbox_ns(sc, sc->mbox, &c, sizeof(c), &c));
723 static struct clip_entry *
724 search_lip(struct tom_data *td, struct in6_addr *lip)
726 struct clip_entry *ce;
728 mtx_assert(&td->clip_table_lock, MA_OWNED);
730 TAILQ_FOREACH(ce, &td->clip_table, link) {
731 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip))
739 hold_lip(struct tom_data *td, struct in6_addr *lip, struct clip_entry *ce)
742 mtx_lock(&td->clip_table_lock);
744 ce = search_lip(td, lip);
747 mtx_unlock(&td->clip_table_lock);
753 release_lip(struct tom_data *td, struct clip_entry *ce)
756 mtx_lock(&td->clip_table_lock);
757 KASSERT(search_lip(td, &ce->lip) == ce,
758 ("%s: CLIP entry %p p not in CLIP table.", __func__, ce));
759 KASSERT(ce->refcount > 0,
760 ("%s: CLIP entry %p has refcount 0", __func__, ce));
762 mtx_unlock(&td->clip_table_lock);
766 init_clip_table(struct adapter *sc, struct tom_data *td)
769 ASSERT_SYNCHRONIZED_OP(sc);
771 mtx_init(&td->clip_table_lock, "CLIP table lock", NULL, MTX_DEF);
772 TAILQ_INIT(&td->clip_table);
775 update_clip_table(sc, td);
779 update_clip(struct adapter *sc, void *arg __unused)
782 if (begin_synchronized_op(sc, NULL, HOLD_LOCK, "t4tomuc"))
785 if (uld_active(sc, ULD_TOM))
786 update_clip_table(sc, sc->tom_softc);
788 end_synchronized_op(sc, LOCK_HELD);
792 t4_clip_task(void *arg, int count)
795 t4_iterate(update_clip, NULL);
799 update_clip_table(struct adapter *sc, struct tom_data *td)
801 struct rm_priotracker in6_ifa_tracker;
802 struct in6_ifaddr *ia;
803 struct in6_addr *lip, tlip;
804 struct clip_head stale;
805 struct clip_entry *ce, *ce_temp;
810 ASSERT_SYNCHRONIZED_OP(sc);
812 IN6_IFADDR_RLOCK(&in6_ifa_tracker);
813 mtx_lock(&td->clip_table_lock);
815 gen = atomic_load_acq_int(&in6_ifaddr_gen);
816 if (gen == td->clip_gen)
820 TAILQ_CONCAT(&stale, &td->clip_table, link);
823 * last_vnet optimizes the common cases where all if_vnet = NULL (no
824 * VIMAGE) or all if_vnet = vnet0.
826 last_vnet = (uintptr_t)(-1);
828 for_each_vi(sc->port[i], j, vi) {
829 if (last_vnet == (uintptr_t)vi->ifp->if_vnet)
832 /* XXX: races with if_vmove */
833 CURVNET_SET(vi->ifp->if_vnet);
834 TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) {
835 lip = &ia->ia_addr.sin6_addr;
837 KASSERT(!IN6_IS_ADDR_MULTICAST(lip),
838 ("%s: mcast address in in6_ifaddr list", __func__));
840 if (IN6_IS_ADDR_LOOPBACK(lip))
842 if (IN6_IS_SCOPE_EMBED(lip)) {
843 /* Remove the embedded scope */
849 * XXX: how to weed out the link local address for the
850 * loopback interface? It's fe80::1 usually (always?).
854 * If it's in the main list then we already know it's
857 TAILQ_FOREACH(ce, &td->clip_table, link) {
858 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip))
863 * If it's in the stale list we should move it to the
866 TAILQ_FOREACH(ce, &stale, link) {
867 if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) {
868 TAILQ_REMOVE(&stale, ce, link);
869 TAILQ_INSERT_TAIL(&td->clip_table, ce,
875 /* A new IP6 address; add it to the CLIP table */
876 ce = malloc(sizeof(*ce), M_CXGBE, M_NOWAIT);
877 memcpy(&ce->lip, lip, sizeof(ce->lip));
879 rc = add_lip(sc, lip);
881 TAILQ_INSERT_TAIL(&td->clip_table, ce, link);
883 char ip[INET6_ADDRSTRLEN];
885 inet_ntop(AF_INET6, &ce->lip, &ip[0],
887 log(LOG_ERR, "%s: could not add %s (%d)\n",
895 last_vnet = (uintptr_t)vi->ifp->if_vnet;
899 * Remove stale addresses (those no longer in V_in6_ifaddrhead) that are
900 * no longer referenced by the driver.
902 TAILQ_FOREACH_SAFE(ce, &stale, link, ce_temp) {
903 if (ce->refcount == 0) {
904 rc = delete_lip(sc, &ce->lip);
906 TAILQ_REMOVE(&stale, ce, link);
909 char ip[INET6_ADDRSTRLEN];
911 inet_ntop(AF_INET6, &ce->lip, &ip[0],
913 log(LOG_ERR, "%s: could not delete %s (%d)\n",
918 /* The ones that are still referenced need to stay in the CLIP table */
919 TAILQ_CONCAT(&td->clip_table, &stale, link);
923 mtx_unlock(&td->clip_table_lock);
924 IN6_IFADDR_RUNLOCK(&in6_ifa_tracker);
928 destroy_clip_table(struct adapter *sc, struct tom_data *td)
930 struct clip_entry *ce, *ce_temp;
932 if (mtx_initialized(&td->clip_table_lock)) {
933 mtx_lock(&td->clip_table_lock);
934 TAILQ_FOREACH_SAFE(ce, &td->clip_table, link, ce_temp) {
935 KASSERT(ce->refcount == 0,
936 ("%s: CLIP entry %p still in use (%d)", __func__,
938 TAILQ_REMOVE(&td->clip_table, ce, link);
939 delete_lip(sc, &ce->lip);
942 mtx_unlock(&td->clip_table_lock);
943 mtx_destroy(&td->clip_table_lock);
948 free_tom_data(struct adapter *sc, struct tom_data *td)
951 ASSERT_SYNCHRONIZED_OP(sc);
953 KASSERT(TAILQ_EMPTY(&td->toep_list),
954 ("%s: TOE PCB list is not empty.", __func__));
955 KASSERT(td->lctx_count == 0,
956 ("%s: lctx hash table is not empty.", __func__));
958 t4_free_ppod_region(&td->pr);
959 destroy_clip_table(sc, td);
961 if (td->listen_mask != 0)
962 hashdestroy(td->listen_hash, M_CXGBE, td->listen_mask);
964 if (mtx_initialized(&td->unsent_wr_lock))
965 mtx_destroy(&td->unsent_wr_lock);
966 if (mtx_initialized(&td->lctx_hash_lock))
967 mtx_destroy(&td->lctx_hash_lock);
968 if (mtx_initialized(&td->toep_list_lock))
969 mtx_destroy(&td->toep_list_lock);
971 free_tid_tabs(&sc->tids);
976 reclaim_wr_resources(void *arg, int count)
978 struct tom_data *td = arg;
979 STAILQ_HEAD(, wrqe) twr_list = STAILQ_HEAD_INITIALIZER(twr_list);
980 struct cpl_act_open_req *cpl;
985 mtx_lock(&td->unsent_wr_lock);
986 STAILQ_SWAP(&td->unsent_wr_list, &twr_list, wrqe);
987 mtx_unlock(&td->unsent_wr_lock);
989 while ((wr = STAILQ_FIRST(&twr_list)) != NULL) {
990 STAILQ_REMOVE_HEAD(&twr_list, link);
993 opcode = GET_OPCODE(cpl);
996 case CPL_ACT_OPEN_REQ:
997 case CPL_ACT_OPEN_REQ6:
998 atid = G_TID_TID(be32toh(OPCODE_TID(cpl)));
1001 CTR2(KTR_CXGBE, "%s: atid %u ", __func__, atid);
1002 act_open_failure_cleanup(sc, atid, EHOSTUNREACH);
1006 log(LOG_ERR, "%s: leaked work request %p, wr_len %d, "
1007 "opcode %x\n", __func__, wr, wr->wr_len, opcode);
1008 /* WR not freed here; go look at it with a debugger. */
1014 * Ground control to Major TOM
1015 * Commencing countdown, engines on
1018 t4_tom_activate(struct adapter *sc)
1020 struct tom_data *td;
1023 struct sge_ofld_rxq *ofld_rxq;
1026 ASSERT_SYNCHRONIZED_OP(sc);
1028 /* per-adapter softc for TOM */
1029 td = malloc(sizeof(*td), M_CXGBE, M_ZERO | M_NOWAIT);
1033 /* List of TOE PCBs and associated lock */
1034 mtx_init(&td->toep_list_lock, "PCB list lock", NULL, MTX_DEF);
1035 TAILQ_INIT(&td->toep_list);
1037 /* Listen context */
1038 mtx_init(&td->lctx_hash_lock, "lctx hash lock", NULL, MTX_DEF);
1039 td->listen_hash = hashinit_flags(LISTEN_HASH_SIZE, M_CXGBE,
1040 &td->listen_mask, HASH_NOWAIT);
1042 /* List of WRs for which L2 resolution failed */
1043 mtx_init(&td->unsent_wr_lock, "Unsent WR list lock", NULL, MTX_DEF);
1044 STAILQ_INIT(&td->unsent_wr_list);
1045 TASK_INIT(&td->reclaim_wr_resources, 0, reclaim_wr_resources, td);
1048 rc = alloc_tid_tabs(&sc->tids);
1052 rc = t4_init_ppod_region(&td->pr, &sc->vres.ddp,
1053 t4_read_reg(sc, A_ULP_RX_TDDP_PSZ), "TDDP page pods");
1056 t4_set_reg_field(sc, A_ULP_RX_TDDP_TAGMASK,
1057 V_TDDPTAGMASK(M_TDDPTAGMASK), td->pr.pr_tag_mask);
1059 /* CLIP table for IPv6 offload */
1060 init_clip_table(sc, td);
1065 tod->tod_softc = sc;
1066 tod->tod_connect = t4_connect;
1067 tod->tod_listen_start = t4_listen_start;
1068 tod->tod_listen_stop = t4_listen_stop;
1069 tod->tod_rcvd = t4_rcvd;
1070 tod->tod_output = t4_tod_output;
1071 tod->tod_send_rst = t4_send_rst;
1072 tod->tod_send_fin = t4_send_fin;
1073 tod->tod_pcb_detach = t4_pcb_detach;
1074 tod->tod_l2_update = t4_l2_update;
1075 tod->tod_syncache_added = t4_syncache_added;
1076 tod->tod_syncache_removed = t4_syncache_removed;
1077 tod->tod_syncache_respond = t4_syncache_respond;
1078 tod->tod_offload_socket = t4_offload_socket;
1079 tod->tod_ctloutput = t4_ctloutput;
1081 for_each_port(sc, i) {
1082 for_each_vi(sc->port[i], v, vi) {
1083 TOEDEV(vi->ifp) = &td->tod;
1084 for_each_ofld_rxq(vi, j, ofld_rxq) {
1085 ofld_rxq->iq.set_tcb_rpl = do_set_tcb_rpl;
1086 ofld_rxq->iq.l2t_write_rpl = do_l2t_write_rpl2;
1092 register_toedev(sc->tom_softc);
1096 free_tom_data(sc, td);
1101 t4_tom_deactivate(struct adapter *sc)
1104 struct tom_data *td = sc->tom_softc;
1106 ASSERT_SYNCHRONIZED_OP(sc);
1109 return (0); /* XXX. KASSERT? */
1111 if (sc->offload_map != 0)
1112 return (EBUSY); /* at least one port has IFCAP_TOE enabled */
1114 if (uld_active(sc, ULD_IWARP) || uld_active(sc, ULD_ISCSI))
1115 return (EBUSY); /* both iWARP and iSCSI rely on the TOE. */
1117 mtx_lock(&td->toep_list_lock);
1118 if (!TAILQ_EMPTY(&td->toep_list))
1120 mtx_unlock(&td->toep_list_lock);
1122 mtx_lock(&td->lctx_hash_lock);
1123 if (td->lctx_count > 0)
1125 mtx_unlock(&td->lctx_hash_lock);
1127 taskqueue_drain(taskqueue_thread, &td->reclaim_wr_resources);
1128 mtx_lock(&td->unsent_wr_lock);
1129 if (!STAILQ_EMPTY(&td->unsent_wr_list))
1131 mtx_unlock(&td->unsent_wr_lock);
1134 unregister_toedev(sc->tom_softc);
1135 free_tom_data(sc, td);
1136 sc->tom_softc = NULL;
1143 t4_tom_ifaddr_event(void *arg __unused, struct ifnet *ifp)
1146 atomic_add_rel_int(&in6_ifaddr_gen, 1);
1147 taskqueue_enqueue_timeout(taskqueue_thread, &clip_task, -hz / 4);
1151 t4_aio_queue_tom(struct socket *so, struct kaiocb *job)
1153 struct tcpcb *tp = so_sototcpcb(so);
1154 struct toepcb *toep = tp->t_toe;
1157 if (toep->ulp_mode == ULP_MODE_TCPDDP) {
1158 error = t4_aio_queue_ddp(so, job);
1159 if (error != EOPNOTSUPP)
1163 return (t4_aio_queue_aiotx(so, job));
1167 t4_tom_mod_load(void)
1170 struct protosw *tcp_protosw, *tcp6_protosw;
1173 t4_init_connect_cpl_handlers();
1174 t4_init_listen_cpl_handlers();
1175 t4_init_cpl_io_handlers();
1177 rc = t4_ddp_mod_load();
1181 tcp_protosw = pffindproto(PF_INET, IPPROTO_TCP, SOCK_STREAM);
1182 if (tcp_protosw == NULL)
1183 return (ENOPROTOOPT);
1184 bcopy(tcp_protosw, &toe_protosw, sizeof(toe_protosw));
1185 bcopy(tcp_protosw->pr_usrreqs, &toe_usrreqs, sizeof(toe_usrreqs));
1186 toe_usrreqs.pru_aio_queue = t4_aio_queue_tom;
1187 toe_protosw.pr_usrreqs = &toe_usrreqs;
1189 tcp6_protosw = pffindproto(PF_INET6, IPPROTO_TCP, SOCK_STREAM);
1190 if (tcp6_protosw == NULL)
1191 return (ENOPROTOOPT);
1192 bcopy(tcp6_protosw, &toe6_protosw, sizeof(toe6_protosw));
1193 bcopy(tcp6_protosw->pr_usrreqs, &toe6_usrreqs, sizeof(toe6_usrreqs));
1194 toe6_usrreqs.pru_aio_queue = t4_aio_queue_tom;
1195 toe6_protosw.pr_usrreqs = &toe6_usrreqs;
1197 TIMEOUT_TASK_INIT(taskqueue_thread, &clip_task, 0, t4_clip_task, NULL);
1198 ifaddr_evhandler = EVENTHANDLER_REGISTER(ifaddr_event,
1199 t4_tom_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY);
1201 rc = t4_register_uld(&tom_uld_info);
1203 t4_tom_mod_unload();
1209 tom_uninit(struct adapter *sc, void *arg __unused)
1211 if (begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4tomun"))
1214 /* Try to free resources (works only if no port has IFCAP_TOE) */
1215 if (uld_active(sc, ULD_TOM))
1216 t4_deactivate_uld(sc, ULD_TOM);
1218 end_synchronized_op(sc, 0);
1222 t4_tom_mod_unload(void)
1224 t4_iterate(tom_uninit, NULL);
1226 if (t4_unregister_uld(&tom_uld_info) == EBUSY)
1229 if (ifaddr_evhandler) {
1230 EVENTHANDLER_DEREGISTER(ifaddr_event, ifaddr_evhandler);
1231 taskqueue_cancel_timeout(taskqueue_thread, &clip_task, NULL);
1234 t4_ddp_mod_unload();
1236 t4_uninit_connect_cpl_handlers();
1237 t4_uninit_listen_cpl_handlers();
1238 t4_uninit_cpl_io_handlers();
1242 #endif /* TCP_OFFLOAD */
1245 t4_tom_modevent(module_t mod, int cmd, void *arg)
1252 rc = t4_tom_mod_load();
1256 rc = t4_tom_mod_unload();
1263 printf("t4_tom: compiled without TCP_OFFLOAD support.\n");
1269 static moduledata_t t4_tom_moddata= {
1275 MODULE_VERSION(t4_tom, 1);
1276 MODULE_DEPEND(t4_tom, toecore, 1, 1, 1);
1277 MODULE_DEPEND(t4_tom, t4nex, 1, 1, 1);
1278 DECLARE_MODULE(t4_tom, t4_tom_moddata, SI_SUB_EXEC, SI_ORDER_ANY);