Date: Sat, 14 Jan 2017 04:34:30 +0000 (UTC) From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r312117 - stable/10/sys/dev/cxgbe/tom Message-ID: <201701140434.v0E4YUIT055980@repo.freebsd.org>
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Author: np Date: Sat Jan 14 04:34:30 2017 New Revision: 312117 URL: https://svnweb.freebsd.org/changeset/base/312117 Log: MFC r311569, r311657, and r311949. r311569: Fix comment in t4_tom. No functional change. r311657: cxgbe/t4_tom: Fix tid accounting. An offloaded IPv6 connection uses 2 tids, not 1, in the hardware. r311949: cxgbe/tom: Add VIMAGE support to the TOE driver. Active Open: - Save the socket's vnet at the time of the active open (t4_connect) and switch to it when processing the reply (do_act_open_rpl or do_act_establish). Passive Open: - Save the listening socket's vnet in the driver's listen_ctx and switch to it when processing incoming SYNs for the socket. - Reject SYNs that arrive on an ifnet that's not in the same vnet as the listening socket. CLIP (Compressed Local IPv6) table: - Add only those IPv6 addresses to the CLIP that are in a vnet associated with one of the card's ifnets. Misc: - Set vnet from the toepcb when processing TCP state transitions. - The kernel sets the vnet when calling the driver's output routine so t4_push_frames runs in proper vnet context already. One exception is when incoming credits trigger tx within the driver's ithread. Set the vnet explicitly in do_fw4_ack for that case. Sponsored by: Chelsio Communications Modified: stable/10/sys/dev/cxgbe/tom/t4_connect.c stable/10/sys/dev/cxgbe/tom/t4_cpl_io.c stable/10/sys/dev/cxgbe/tom/t4_ddp.c stable/10/sys/dev/cxgbe/tom/t4_listen.c stable/10/sys/dev/cxgbe/tom/t4_tom.c stable/10/sys/dev/cxgbe/tom/t4_tom.h Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/dev/cxgbe/tom/t4_connect.c ============================================================================== --- stable/10/sys/dev/cxgbe/tom/t4_connect.c Sat Jan 14 04:24:49 2017 (r312116) +++ stable/10/sys/dev/cxgbe/tom/t4_connect.c Sat Jan 14 04:34:30 2017 (r312117) @@ -107,7 +107,7 @@ free_atid(struct adapter *sc, int atid) } /* - * Active open failed. + * Active open succeeded. */ static int do_act_establish(struct sge_iq *iq, const struct rss_header *rss, @@ -126,9 +126,10 @@ do_act_establish(struct sge_iq *iq, cons CTR3(KTR_CXGBE, "%s: atid %u, tid %u", __func__, atid, tid); free_atid(sc, atid); + CURVNET_SET(toep->vnet); INP_WLOCK(inp); toep->tid = tid; - insert_tid(sc, tid, toep); + insert_tid(sc, tid, toep, inp->inp_vflag & INP_IPV6 ? 2 : 1); if (inp->inp_flags & INP_DROPPED) { /* socket closed by the kernel before hw told us it connected */ @@ -141,6 +142,7 @@ do_act_establish(struct sge_iq *iq, cons make_established(toep, cpl->snd_isn, cpl->rcv_isn, cpl->tcp_opt); done: INP_WUNLOCK(inp); + CURVNET_RESTORE(); return (0); } @@ -178,6 +180,7 @@ act_open_failure_cleanup(struct adapter free_atid(sc, atid); toep->tid = -1; + CURVNET_SET(toep->vnet); if (status != EAGAIN) INP_INFO_RLOCK(&V_tcbinfo); INP_WLOCK(inp); @@ -185,8 +188,12 @@ act_open_failure_cleanup(struct adapter final_cpl_received(toep); /* unlocks inp */ if (status != EAGAIN) INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); } +/* + * Active open failed. + */ static int do_act_open_rpl(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m) @@ -357,6 +364,7 @@ t4_connect(struct toedev *tod, struct so if (wr == NULL) DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM); + toep->vnet = so->so_vnet; if (sc->tt.ddp && (so->so_options & SO_NO_DDP) == 0) set_tcpddp_ulp_mode(toep); else Modified: stable/10/sys/dev/cxgbe/tom/t4_cpl_io.c ============================================================================== --- stable/10/sys/dev/cxgbe/tom/t4_cpl_io.c Sat Jan 14 04:24:49 2017 (r312116) +++ stable/10/sys/dev/cxgbe/tom/t4_cpl_io.c Sat Jan 14 04:34:30 2017 (r312117) @@ -302,7 +302,6 @@ make_established(struct toepcb *toep, ui uint16_t tcpopt = be16toh(opt); struct flowc_tx_params ftxp; - CURVNET_SET(so->so_vnet); INP_WLOCK_ASSERT(inp); KASSERT(tp->t_state == TCPS_SYN_SENT || tp->t_state == TCPS_SYN_RECEIVED, @@ -353,7 +352,6 @@ make_established(struct toepcb *toep, ui send_flowc_wr(toep, &ftxp); soisconnected(so); - CURVNET_RESTORE(); } static int @@ -1107,6 +1105,7 @@ do_peer_close(struct sge_iq *iq, const s KASSERT(toep->tid == tid, ("%s: toep tid mismatch", __func__)); + CURVNET_SET(toep->vnet); INP_INFO_RLOCK(&V_tcbinfo); INP_WLOCK(inp); tp = intotcpcb(inp); @@ -1150,6 +1149,7 @@ do_peer_close(struct sge_iq *iq, const s tcp_twstart(tp); INP_UNLOCK_ASSERT(inp); /* safe, we have a ref on the inp */ INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); INP_WLOCK(inp); final_cpl_received(toep); @@ -1162,6 +1162,7 @@ do_peer_close(struct sge_iq *iq, const s done: INP_WUNLOCK(inp); INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); return (0); } @@ -1188,6 +1189,7 @@ do_close_con_rpl(struct sge_iq *iq, cons KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__)); KASSERT(toep->tid == tid, ("%s: toep tid mismatch", __func__)); + CURVNET_SET(toep->vnet); INP_INFO_RLOCK(&V_tcbinfo); INP_WLOCK(inp); tp = intotcpcb(inp); @@ -1207,6 +1209,7 @@ do_close_con_rpl(struct sge_iq *iq, cons release: INP_UNLOCK_ASSERT(inp); /* safe, we have a ref on the inp */ INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); INP_WLOCK(inp); final_cpl_received(toep); /* no more CPLs expected */ @@ -1231,6 +1234,7 @@ release: done: INP_WUNLOCK(inp); INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); return (0); } @@ -1304,6 +1308,7 @@ do_abort_req(struct sge_iq *iq, const st } inp = toep->inp; + CURVNET_SET(toep->vnet); INP_INFO_RLOCK(&V_tcbinfo); /* for tcp_close */ INP_WLOCK(inp); @@ -1339,6 +1344,7 @@ do_abort_req(struct sge_iq *iq, const st final_cpl_received(toep); done: INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); send_abort_rpl(sc, ofld_txq, tid, CPL_ABORT_NO_RST); return (0); } @@ -1456,18 +1462,21 @@ do_rx_data(struct sge_iq *iq, const stru SOCKBUF_UNLOCK(sb); INP_WUNLOCK(inp); + CURVNET_SET(toep->vnet); INP_INFO_RLOCK(&V_tcbinfo); INP_WLOCK(inp); tp = tcp_drop(tp, ECONNRESET); if (tp) INP_WUNLOCK(inp); INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); return (0); } /* receive buffer autosize */ - CURVNET_SET(so->so_vnet); + MPASS(toep->vnet == so->so_vnet); + CURVNET_SET(toep->vnet); if (sb->sb_flags & SB_AUTOSIZE && V_tcp_do_autorcvbuf && sb->sb_hiwat < V_tcp_autorcvbuf_max && @@ -1674,10 +1683,12 @@ do_fw4_ack(struct sge_iq *iq, const stru if (toep->flags & TPF_TX_SUSPENDED && toep->tx_credits >= toep->tx_total / 4) { toep->flags &= ~TPF_TX_SUSPENDED; + CURVNET_SET(toep->vnet); if (toep->ulp_mode == ULP_MODE_ISCSI) t4_push_pdus(sc, toep, plen); else t4_push_frames(sc, toep, plen); + CURVNET_RESTORE(); } else if (plen > 0) { struct sockbuf *sb = &so->so_snd; int sbu; Modified: stable/10/sys/dev/cxgbe/tom/t4_ddp.c ============================================================================== --- stable/10/sys/dev/cxgbe/tom/t4_ddp.c Sat Jan 14 04:24:49 2017 (r312116) +++ stable/10/sys/dev/cxgbe/tom/t4_ddp.c Sat Jan 14 04:34:30 2017 (r312117) @@ -392,6 +392,9 @@ handle_ddp_data(struct toepcb *toep, __b discourage_ddp(toep); /* receive buffer autosize */ + MPASS(toep->vnet == so->so_vnet); + CURVNET_SET(toep->vnet); + SOCKBUF_LOCK(sb); if (sb->sb_flags & SB_AUTOSIZE && V_tcp_do_autorcvbuf && sb->sb_hiwat < V_tcp_autorcvbuf_max && @@ -405,6 +408,7 @@ handle_ddp_data(struct toepcb *toep, __b else toep->rx_credits += newsize - hiwat; } + CURVNET_RESTORE(); KASSERT(toep->sb_cc >= sb->sb_cc, ("%s: sb %p has more data (%d) than last time (%d).", Modified: stable/10/sys/dev/cxgbe/tom/t4_listen.c ============================================================================== --- stable/10/sys/dev/cxgbe/tom/t4_listen.c Sat Jan 14 04:24:49 2017 (r312116) +++ stable/10/sys/dev/cxgbe/tom/t4_listen.c Sat Jan 14 04:34:30 2017 (r312117) @@ -220,6 +220,7 @@ alloc_lctx(struct adapter *sc, struct in TAILQ_INIT(&lctx->synq); lctx->inp = inp; + lctx->vnet = inp->inp_socket->so_vnet; in_pcbref(inp); return (lctx); @@ -825,14 +826,16 @@ done_with_synqe(struct adapter *sc, stru struct inpcb *inp = lctx->inp; struct vi_info *vi = synqe->syn->m_pkthdr.rcvif->if_softc; struct l2t_entry *e = &sc->l2t->l2tab[synqe->l2e_idx]; + int ntids; INP_WLOCK_ASSERT(inp); + ntids = inp->inp_vflag & INP_IPV6 ? 2 : 1; TAILQ_REMOVE(&lctx->synq, synqe, link); inp = release_lctx(sc, lctx); if (inp) INP_WUNLOCK(inp); - remove_tid(sc, synqe->tid); + remove_tid(sc, synqe->tid, ntids); release_tid(sc, synqe->tid, &sc->sge.ctrlq[vi->pi->port_id]); t4_l2t_release(e); release_synqe(synqe); /* removed from synq list */ @@ -1235,7 +1238,7 @@ do_pass_accept_req(struct sge_iq *iq, co struct l2t_entry *e = NULL; int rscale, mtu_idx, rx_credits, rxqid, ulp_mode; struct synq_entry *synqe = NULL; - int reject_reason, v; + int reject_reason, v, ntids; uint16_t vid; #ifdef INVARIANTS unsigned int opcode = G_CPL_OPCODE(be32toh(OPCODE_TID(cpl))); @@ -1253,6 +1256,8 @@ do_pass_accept_req(struct sge_iq *iq, co pi = sc->port[G_SYN_INTF(be16toh(cpl->l2info))]; + CURVNET_SET(lctx->vnet); + /* * Use the MAC index to lookup the associated VI. If this SYN * didn't match a perfect MAC filter, punt. @@ -1309,6 +1314,8 @@ found: */ if (!ifnet_has_ip6(ifp, &inc.inc6_laddr)) REJECT_PASS_ACCEPT(); + + ntids = 2; } else { /* Don't offload if the ifcap isn't enabled */ @@ -1321,8 +1328,17 @@ found: */ if (!ifnet_has_ip(ifp, inc.inc_laddr)) REJECT_PASS_ACCEPT(); + + ntids = 1; } + /* + * Don't offload if the ifnet that the SYN came in on is not in the same + * vnet as the listening socket. + */ + if (lctx->vnet != ifp->if_vnet) + REJECT_PASS_ACCEPT(); + e = get_l2te_for_nexthop(pi, ifp, &inc); if (e == NULL) REJECT_PASS_ACCEPT(); @@ -1362,7 +1378,6 @@ found: REJECT_PASS_ACCEPT(); } so = inp->inp_socket; - CURVNET_SET(so->so_vnet); mtu_idx = find_best_mtu_idx(sc, &inc, be16toh(cpl->tcpopt.mss)); rscale = cpl->tcpopt.wsf && V_tcp_do_rfc1323 ? select_rcv_wscale() : 0; @@ -1398,7 +1413,7 @@ found: synqe->rcv_bufsize = rx_credits; atomic_store_rel_ptr(&synqe->wr, (uintptr_t)wr); - insert_tid(sc, tid, synqe); + insert_tid(sc, tid, synqe, ntids); TAILQ_INSERT_TAIL(&lctx->synq, synqe, link); hold_synqe(synqe); /* hold for the duration it's in the synq */ hold_lctx(lctx); /* A synqe on the list has a ref on its lctx */ @@ -1409,7 +1424,6 @@ found: */ toe_syncache_add(&inc, &to, &th, inp, tod, synqe); INP_UNLOCK_ASSERT(inp); /* ok to assert, we have a ref on the inp */ - CURVNET_RESTORE(); /* * If we replied during syncache_add (synqe->wr has been consumed), @@ -1427,7 +1441,7 @@ found: if (m) m->m_pkthdr.rcvif = hw_ifp; - remove_tid(sc, synqe->tid); + remove_tid(sc, synqe->tid, ntids); free(wr, M_CXGBE); /* Yank the synqe out of the lctx synq. */ @@ -1464,10 +1478,12 @@ found: return (__LINE__); } INP_WUNLOCK(inp); + CURVNET_RESTORE(); release_synqe(synqe); /* extra hold */ return (0); reject: + CURVNET_RESTORE(); CTR4(KTR_CXGBE, "%s: stid %u, tid %u, REJECT (%d)", __func__, stid, tid, reject_reason); @@ -1539,6 +1555,7 @@ do_pass_establish(struct sge_iq *iq, con KASSERT(synqe->flags & TPF_SYNQE, ("%s: tid %u (ctx %p) not a synqe", __func__, tid, synqe)); + CURVNET_SET(lctx->vnet); INP_INFO_RLOCK(&V_tcbinfo); /* for syncache_expand */ INP_WLOCK(inp); @@ -1556,6 +1573,7 @@ do_pass_establish(struct sge_iq *iq, con INP_WUNLOCK(inp); INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); return (0); } @@ -1581,6 +1599,7 @@ reset: send_reset_synqe(TOEDEV(ifp), synqe); INP_WUNLOCK(inp); INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); return (0); } toep->tid = tid; @@ -1617,6 +1636,8 @@ reset: /* New connection inpcb is already locked by syncache_expand(). */ new_inp = sotoinpcb(so); INP_WLOCK_ASSERT(new_inp); + MPASS(so->so_vnet == lctx->vnet); + toep->vnet = lctx->vnet; /* * This is for the unlikely case where the syncache entry that we added @@ -1640,6 +1661,7 @@ reset: if (inp != NULL) INP_WUNLOCK(inp); INP_INFO_RUNLOCK(&V_tcbinfo); + CURVNET_RESTORE(); release_synqe(synqe); return (0); Modified: stable/10/sys/dev/cxgbe/tom/t4_tom.c ============================================================================== --- stable/10/sys/dev/cxgbe/tom/t4_tom.c Sat Jan 14 04:24:49 2017 (r312116) +++ stable/10/sys/dev/cxgbe/tom/t4_tom.c Sat Jan 14 04:34:30 2017 (r312117) @@ -321,7 +321,7 @@ release_offload_resources(struct toepcb t4_l2t_release(toep->l2te); if (tid >= 0) { - remove_tid(sc, tid); + remove_tid(sc, tid, toep->ce ? 2 : 1); release_tid(sc, tid, toep->ctrlq); } @@ -432,12 +432,12 @@ final_cpl_received(struct toepcb *toep) } void -insert_tid(struct adapter *sc, int tid, void *ctx) +insert_tid(struct adapter *sc, int tid, void *ctx, int ntids) { struct tid_info *t = &sc->tids; t->tid_tab[tid] = ctx; - atomic_add_int(&t->tids_in_use, 1); + atomic_add_int(&t->tids_in_use, ntids); } void * @@ -457,12 +457,12 @@ update_tid(struct adapter *sc, int tid, } void -remove_tid(struct adapter *sc, int tid) +remove_tid(struct adapter *sc, int tid, int ntids) { struct tid_info *t = &sc->tids; t->tid_tab[tid] = NULL; - atomic_subtract_int(&t->tids_in_use, 1); + atomic_subtract_int(&t->tids_in_use, ntids); } void @@ -811,74 +811,96 @@ update_clip_table(struct adapter *sc, st struct in6_addr *lip, tlip; struct clip_head stale; struct clip_entry *ce, *ce_temp; - int rc, gen = atomic_load_acq_int(&in6_ifaddr_gen); + struct vi_info *vi; + int rc, gen, i, j; + uintptr_t last_vnet; ASSERT_SYNCHRONIZED_OP(sc); IN6_IFADDR_RLOCK(); mtx_lock(&td->clip_table_lock); + gen = atomic_load_acq_int(&in6_ifaddr_gen); if (gen == td->clip_gen) goto done; TAILQ_INIT(&stale); TAILQ_CONCAT(&stale, &td->clip_table, link); - TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) { - lip = &ia->ia_addr.sin6_addr; + /* + * last_vnet optimizes the common cases where all if_vnet = NULL (no + * VIMAGE) or all if_vnet = vnet0. + */ + last_vnet = (uintptr_t)(-1); + for_each_port(sc, i) + for_each_vi(sc->port[i], j, vi) { + if (last_vnet == (uintptr_t)vi->ifp->if_vnet) + continue; - KASSERT(!IN6_IS_ADDR_MULTICAST(lip), - ("%s: mcast address in in6_ifaddr list", __func__)); + /* XXX: races with if_vmove */ + CURVNET_SET(vi->ifp->if_vnet); + TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) { + lip = &ia->ia_addr.sin6_addr; + + KASSERT(!IN6_IS_ADDR_MULTICAST(lip), + ("%s: mcast address in in6_ifaddr list", __func__)); + + if (IN6_IS_ADDR_LOOPBACK(lip)) + continue; + if (IN6_IS_SCOPE_EMBED(lip)) { + /* Remove the embedded scope */ + tlip = *lip; + lip = &tlip; + in6_clearscope(lip); + } + /* + * XXX: how to weed out the link local address for the + * loopback interface? It's fe80::1 usually (always?). + */ + + /* + * If it's in the main list then we already know it's + * not stale. + */ + TAILQ_FOREACH(ce, &td->clip_table, link) { + if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) + goto next; + } - if (IN6_IS_ADDR_LOOPBACK(lip)) - continue; - if (IN6_IS_SCOPE_EMBED(lip)) { - /* Remove the embedded scope */ - tlip = *lip; - lip = &tlip; - in6_clearscope(lip); - } - /* - * XXX: how to weed out the link local address for the loopback - * interface? It's fe80::1 usually (always?). - */ - - /* - * If it's in the main list then we already know it's not stale. - */ - TAILQ_FOREACH(ce, &td->clip_table, link) { - if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) - goto next; - } + /* + * If it's in the stale list we should move it to the + * main list. + */ + TAILQ_FOREACH(ce, &stale, link) { + if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) { + TAILQ_REMOVE(&stale, ce, link); + TAILQ_INSERT_TAIL(&td->clip_table, ce, + link); + goto next; + } + } - /* - * If it's in the stale list we should move it to the main list. - */ - TAILQ_FOREACH(ce, &stale, link) { - if (IN6_ARE_ADDR_EQUAL(&ce->lip, lip)) { - TAILQ_REMOVE(&stale, ce, link); + /* A new IP6 address; add it to the CLIP table */ + ce = malloc(sizeof(*ce), M_CXGBE, M_NOWAIT); + memcpy(&ce->lip, lip, sizeof(ce->lip)); + ce->refcount = 0; + rc = add_lip(sc, lip); + if (rc == 0) TAILQ_INSERT_TAIL(&td->clip_table, ce, link); - goto next; - } - } + else { + char ip[INET6_ADDRSTRLEN]; - /* A new IP6 address; add it to the CLIP table */ - ce = malloc(sizeof(*ce), M_CXGBE, M_NOWAIT); - memcpy(&ce->lip, lip, sizeof(ce->lip)); - ce->refcount = 0; - rc = add_lip(sc, lip); - if (rc == 0) - TAILQ_INSERT_TAIL(&td->clip_table, ce, link); - else { - char ip[INET6_ADDRSTRLEN]; - - inet_ntop(AF_INET6, &ce->lip, &ip[0], sizeof(ip)); - log(LOG_ERR, "%s: could not add %s (%d)\n", - __func__, ip, rc); - free(ce, M_CXGBE); - } + inet_ntop(AF_INET6, &ce->lip, &ip[0], + sizeof(ip)); + log(LOG_ERR, "%s: could not add %s (%d)\n", + __func__, ip, rc); + free(ce, M_CXGBE); + } next: - continue; + continue; + } + CURVNET_RESTORE(); + last_vnet = (uintptr_t)vi->ifp->if_vnet; } /* Modified: stable/10/sys/dev/cxgbe/tom/t4_tom.h ============================================================================== --- stable/10/sys/dev/cxgbe/tom/t4_tom.h Sat Jan 14 04:24:49 2017 (r312116) +++ stable/10/sys/dev/cxgbe/tom/t4_tom.h Sat Jan 14 04:34:30 2017 (r312117) @@ -123,6 +123,7 @@ struct toepcb { u_int flags; /* miscellaneous flags */ struct tom_data *td; struct inpcb *inp; /* backpointer to host stack's PCB */ + struct vnet *vnet; struct vi_info *vi; /* virtual interface */ struct sge_wrq *ofld_txq; struct sge_ofld_rxq *ofld_rxq; @@ -199,6 +200,7 @@ struct listen_ctx { struct stid_region stid_region; int flags; struct inpcb *inp; /* listening socket's inp */ + struct vnet *vnet; struct sge_wrq *ctrlq; struct sge_ofld_rxq *ofld_rxq; struct clip_entry *ce; @@ -278,10 +280,10 @@ void free_toepcb(struct toepcb *); void offload_socket(struct socket *, struct toepcb *); void undo_offload_socket(struct socket *); void final_cpl_received(struct toepcb *); -void insert_tid(struct adapter *, int, void *); +void insert_tid(struct adapter *, int, void *, int); void *lookup_tid(struct adapter *, int); void update_tid(struct adapter *, int, void *); -void remove_tid(struct adapter *, int); +void remove_tid(struct adapter *, int, int); void release_tid(struct adapter *, int, struct sge_wrq *); int find_best_mtu_idx(struct adapter *, struct in_conninfo *, int); u_long select_rcv_wnd(struct socket *);
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