/*- * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ /* $KAME: sctp_usrreq.c,v 1.48 2005/03/07 23:26:08 itojun Exp $ */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #if defined(INET6) #include #endif #include #include #include #include #include #include #include #include #include void sctp_init(void) { /* Init the SCTP pcb in sctp_pcb.c */ u_long sb_max_adj; sctp_pcb_init(); if ((nmbclusters / 8) > SCTP_ASOC_MAX_CHUNKS_ON_QUEUE) sctp_max_chunks_on_queue = (nmbclusters / 8); /* * Allow a user to take no more than 1/2 the number of clusters or * the SB_MAX whichever is smaller for the send window. */ sb_max_adj = (u_long)((u_quad_t) (SB_MAX) * MCLBYTES / (MSIZE + MCLBYTES)); sctp_sendspace = min((min(SB_MAX, sb_max_adj)), (((uint32_t) nmbclusters / 2) * SCTP_DEFAULT_MAXSEGMENT)); /* * Now for the recv window, should we take the same amount? or * should I do 1/2 the SB_MAX instead in the SB_MAX min above. For * now I will just copy. */ sctp_recvspace = sctp_sendspace; } /* * cleanup of the sctppcbinfo structure. * Assumes that the sctppcbinfo lock is held. */ void sctp_pcbinfo_cleanup(void) { /* free the hash tables */ if (sctppcbinfo.sctp_asochash != NULL) SCTP_HASH_FREE(sctppcbinfo.sctp_asochash, sctppcbinfo.hashasocmark); if (sctppcbinfo.sctp_ephash != NULL) SCTP_HASH_FREE(sctppcbinfo.sctp_ephash, sctppcbinfo.hashmark); if (sctppcbinfo.sctp_tcpephash != NULL) SCTP_HASH_FREE(sctppcbinfo.sctp_tcpephash, sctppcbinfo.hashtcpmark); if (sctppcbinfo.sctp_restarthash != NULL) SCTP_HASH_FREE(sctppcbinfo.sctp_restarthash, sctppcbinfo.hashrestartmark); } static void sctp_pathmtu_adjustment(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *net, uint16_t nxtsz) { struct sctp_tmit_chunk *chk; /* Adjust that too */ stcb->asoc.smallest_mtu = nxtsz; /* now off to subtract IP_DF flag if needed */ #ifdef SCTP_PRINT_FOR_B_AND_M SCTP_PRINTF("sctp_pathmtu_adjust called inp:%p stcb:%p net:%p nxtsz:%d\n", inp, stcb, net, nxtsz); #endif TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { if ((chk->send_size + IP_HDR_SIZE) > nxtsz) { chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; } } TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { if ((chk->send_size + IP_HDR_SIZE) > nxtsz) { /* * For this guy we also mark for immediate resend * since we sent to big of chunk */ chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; if (chk->sent != SCTP_DATAGRAM_RESEND) { sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); } chk->sent = SCTP_DATAGRAM_RESEND; chk->rec.data.doing_fast_retransmit = 0; if (sctp_logging_level & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU, chk->whoTo->flight_size, chk->book_size, (uintptr_t) chk->whoTo, chk->rec.data.TSN_seq); } /* Clear any time so NO RTT is being done */ chk->do_rtt = 0; sctp_flight_size_decrease(chk); sctp_total_flight_decrease(stcb, chk); } } } static void sctp_notify_mbuf(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *net, struct ip *ip, struct sctphdr *sh) { struct icmp *icmph; int totsz, tmr_stopped = 0; uint16_t nxtsz; /* protection */ if ((inp == NULL) || (stcb == NULL) || (net == NULL) || (ip == NULL) || (sh == NULL)) { if (stcb != NULL) { SCTP_TCB_UNLOCK(stcb); } return; } /* First job is to verify the vtag matches what I would send */ if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) { SCTP_TCB_UNLOCK(stcb); return; } icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) - sizeof(struct ip))); if (icmph->icmp_type != ICMP_UNREACH) { /* We only care about unreachable */ SCTP_TCB_UNLOCK(stcb); return; } if (icmph->icmp_code != ICMP_UNREACH_NEEDFRAG) { /* not a unreachable message due to frag. */ SCTP_TCB_UNLOCK(stcb); return; } totsz = ip->ip_len; nxtsz = ntohs(icmph->icmp_seq); if (nxtsz == 0) { /* * old type router that does not tell us what the next size * mtu is. Rats we will have to guess (in a educated fashion * of course) */ nxtsz = find_next_best_mtu(totsz); } /* Stop any PMTU timer */ if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { tmr_stopped = 1; sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1); } /* Adjust destination size limit */ if (net->mtu > nxtsz) { net->mtu = nxtsz; } /* now what about the ep? */ if (stcb->asoc.smallest_mtu > nxtsz) { #ifdef SCTP_PRINT_FOR_B_AND_M SCTP_PRINTF("notify_mbuf (ICMP) calls sctp_pathmtu_adjust mtu:%d\n", nxtsz); #endif sctp_pathmtu_adjustment(inp, stcb, net, nxtsz); } if (tmr_stopped) sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); SCTP_TCB_UNLOCK(stcb); } void sctp_notify(struct sctp_inpcb *inp, int error, struct sctphdr *sh, struct sockaddr *to, struct sctp_tcb *stcb, struct sctp_nets *net) { /* protection */ if ((inp == NULL) || (stcb == NULL) || (net == NULL) || (sh == NULL) || (to == NULL)) { return; } /* First job is to verify the vtag matches what I would send */ if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) { return; } /* FIX ME FIX ME PROTOPT i.e. no SCTP should ALWAYS be an ABORT */ if ((error == EHOSTUNREACH) || /* Host is not reachable */ (error == EHOSTDOWN) || /* Host is down */ (error == ECONNREFUSED) || /* Host refused the connection, (not * an abort?) */ (error == ENOPROTOOPT) /* SCTP is not present on host */ ) { /* * Hmm reachablity problems we must examine closely. If its * not reachable, we may have lost a network. Or if there is * NO protocol at the other end named SCTP. well we consider * it a OOTB abort. */ if ((error == EHOSTUNREACH) || (error == EHOSTDOWN)) { if (net->dest_state & SCTP_ADDR_REACHABLE) { /* Ok that destination is NOT reachable */ SCTP_PRINTF("ICMP (thresh %d/%d) takes interface %p down\n", net->error_count, net->failure_threshold, net); net->dest_state &= ~SCTP_ADDR_REACHABLE; net->dest_state |= SCTP_ADDR_NOT_REACHABLE; net->error_count = net->failure_threshold + 1; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, stcb, SCTP_FAILED_THRESHOLD, (void *)net); } if (stcb) { SCTP_TCB_UNLOCK(stcb); } } else { /* * Here the peer is either playing tricks on us, * including an address that belongs to someone who * does not support SCTP OR was a userland * implementation that shutdown and now is dead. In * either case treat it like a OOTB abort with no * TCB */ sctp_abort_notification(stcb, SCTP_PEER_FAULTY); sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2); /* no need to unlock here, since the TCB is gone */ } } else { /* Send all others to the app */ if (stcb) { SCTP_TCB_UNLOCK(stcb); } if (inp->sctp_socket) { #ifdef SCTP_LOCK_LOGGING if (sctp_logging_level & SCTP_LOCK_LOGGING_ENABLE) { sctp_log_lock(inp, stcb, SCTP_LOG_LOCK_SOCK); } #endif SOCK_LOCK(inp->sctp_socket); inp->sctp_socket->so_error = error; sctp_sowwakeup(inp, inp->sctp_socket); SOCK_UNLOCK(inp->sctp_socket); } } } void sctp_ctlinput(cmd, sa, vip) int cmd; struct sockaddr *sa; void *vip; { struct ip *ip = vip; struct sctphdr *sh; uint32_t vrf_id; /* FIX, for non-bsd is this right? */ vrf_id = SCTP_DEFAULT_VRFID; if (sa->sa_family != AF_INET || ((struct sockaddr_in *)sa)->sin_addr.s_addr == INADDR_ANY) { return; } if (PRC_IS_REDIRECT(cmd)) { ip = 0; } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) { return; } if (ip) { struct sctp_inpcb *inp = NULL; struct sctp_tcb *stcb = NULL; struct sctp_nets *net = NULL; struct sockaddr_in to, from; sh = (struct sctphdr *)((caddr_t)ip + (ip->ip_hl << 2)); bzero(&to, sizeof(to)); bzero(&from, sizeof(from)); from.sin_family = to.sin_family = AF_INET; from.sin_len = to.sin_len = sizeof(to); from.sin_port = sh->src_port; from.sin_addr = ip->ip_src; to.sin_port = sh->dest_port; to.sin_addr = ip->ip_dst; /* * 'to' holds the dest of the packet that failed to be sent. * 'from' holds our local endpoint address. Thus we reverse * the to and the from in the lookup. */ stcb = sctp_findassociation_addr_sa((struct sockaddr *)&from, (struct sockaddr *)&to, &inp, &net, 1, vrf_id); if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { if (cmd != PRC_MSGSIZE) { int cm; if (cmd == PRC_HOSTDEAD) { cm = EHOSTUNREACH; } else { cm = inetctlerrmap[cmd]; } sctp_notify(inp, cm, sh, (struct sockaddr *)&to, stcb, net); } else { /* handle possible ICMP size messages */ sctp_notify_mbuf(inp, stcb, net, ip, sh); } } else { if ((stcb == NULL) && (inp != NULL)) { /* reduce ref-count */ SCTP_INP_WLOCK(inp); SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); } } } return; } static int sctp_getcred(SYSCTL_HANDLER_ARGS) { struct xucred xuc; struct sockaddr_in addrs[2]; struct sctp_inpcb *inp; struct sctp_nets *net; struct sctp_tcb *stcb; int error; uint32_t vrf_id; /* FIX, for non-bsd is this right? */ vrf_id = SCTP_DEFAULT_VRFID; error = priv_check(req->td, PRIV_NETINET_GETCRED); if (error) return (error); error = SYSCTL_IN(req, addrs, sizeof(addrs)); if (error) return (error); stcb = sctp_findassociation_addr_sa(sintosa(&addrs[0]), sintosa(&addrs[1]), &inp, &net, 1, vrf_id); if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { if ((inp != NULL) && (stcb == NULL)) { /* reduce ref-count */ SCTP_INP_WLOCK(inp); SCTP_INP_DECR_REF(inp); goto cred_can_cont; } error = ENOENT; goto out; } SCTP_TCB_UNLOCK(stcb); /* * We use the write lock here, only since in the error leg we need * it. If we used RLOCK, then we would have to * wlock/decr/unlock/rlock. Which in theory could create a hole. * Better to use higher wlock. */ SCTP_INP_WLOCK(inp); cred_can_cont: error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); if (error) { SCTP_INP_WUNLOCK(inp); goto out; } cru2x(inp->sctp_socket->so_cred, &xuc); SCTP_INP_WUNLOCK(inp); error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); out: return (error); } SYSCTL_PROC(_net_inet_sctp, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 0, 0, sctp_getcred, "S,ucred", "Get the ucred of a SCTP connection"); static void sctp_abort(struct socket *so) { struct sctp_inpcb *inp; uint32_t flags; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) return; sctp_must_try_again: flags = inp->sctp_flags; #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 17); #endif if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 16); #endif sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, SCTP_CALLED_AFTER_CMPSET_OFCLOSE); SOCK_LOCK(so); SCTP_SB_CLEAR(so->so_snd); /* * same for the rcv ones, they are only here for the * accounting/select. */ SCTP_SB_CLEAR(so->so_rcv); /* Now null out the reference, we are completely detached. */ so->so_pcb = NULL; SOCK_UNLOCK(so); } else { flags = inp->sctp_flags; if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { goto sctp_must_try_again; } } return; } static int sctp_attach(struct socket *so, int proto, struct thread *p) { struct sctp_inpcb *inp; struct inpcb *ip_inp; int error; uint32_t vrf_id = SCTP_DEFAULT_VRFID; #ifdef IPSEC uint32_t flags; #endif inp = (struct sctp_inpcb *)so->so_pcb; if (inp != 0) { return EINVAL; } error = SCTP_SORESERVE(so, sctp_sendspace, sctp_recvspace); if (error) { return error; } error = sctp_inpcb_alloc(so, vrf_id); if (error) { return error; } inp = (struct sctp_inpcb *)so->so_pcb; SCTP_INP_WLOCK(inp); inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6; /* I'm not v6! */ ip_inp = &inp->ip_inp.inp; ip_inp->inp_vflag |= INP_IPV4; ip_inp->inp_ip_ttl = ip_defttl; #ifdef IPSEC error = ipsec_init_pcbpolicy(so, &ip_inp->inp_sp); #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 17); #endif if (error != 0) { flags = inp->sctp_flags; if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 15); #endif SCTP_INP_WUNLOCK(inp); sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, SCTP_CALLED_AFTER_CMPSET_OFCLOSE); } else { SCTP_INP_WUNLOCK(inp); } return error; } #endif /* IPSEC */ SCTP_INP_WUNLOCK(inp); return 0; } static int sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p) { struct sctp_inpcb *inp; int error; #ifdef INET6 if (addr && addr->sa_family != AF_INET) /* must be a v4 address! */ return EINVAL; #endif /* INET6 */ if (addr && (addr->sa_len != sizeof(struct sockaddr_in))) { return EINVAL; } inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) return EINVAL; error = sctp_inpcb_bind(so, addr, NULL, p); return error; } static void sctp_close(struct socket *so) { struct sctp_inpcb *inp; uint32_t flags; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) return; /* * Inform all the lower layer assoc that we are done. */ sctp_must_try_again: flags = inp->sctp_flags; #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 17); #endif if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) || (so->so_rcv.sb_cc > 0)) { #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 13); #endif sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, SCTP_CALLED_AFTER_CMPSET_OFCLOSE); } else { #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 14); #endif sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE, SCTP_CALLED_AFTER_CMPSET_OFCLOSE); } /* * The socket is now detached, no matter what the state of * the SCTP association. */ SOCK_LOCK(so); SCTP_SB_CLEAR(so->so_snd); /* * same for the rcv ones, they are only here for the * accounting/select. */ SCTP_SB_CLEAR(so->so_rcv); /* Now null out the reference, we are completely detached. */ so->so_pcb = NULL; SOCK_UNLOCK(so); } else { flags = inp->sctp_flags; if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { goto sctp_must_try_again; } } return; } int sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, struct mbuf *control, struct thread *p); int sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, struct mbuf *control, struct thread *p) { struct sctp_inpcb *inp; int error; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) { if (control) { sctp_m_freem(control); control = NULL; } sctp_m_freem(m); return EINVAL; } /* Got to have an to address if we are NOT a connected socket */ if ((addr == NULL) && ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) || (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) ) { goto connected_type; } else if (addr == NULL) { error = EDESTADDRREQ; sctp_m_freem(m); if (control) { sctp_m_freem(control); control = NULL; } return (error); } #ifdef INET6 if (addr->sa_family != AF_INET) { /* must be a v4 address! */ sctp_m_freem(m); if (control) { sctp_m_freem(control); control = NULL; } error = EDESTADDRREQ; return EINVAL; } #endif /* INET6 */ connected_type: /* now what about control */ if (control) { if (inp->control) { SCTP_PRINTF("huh? control set?\n"); sctp_m_freem(inp->control); inp->control = NULL; } inp->control = control; } /* Place the data */ if (inp->pkt) { SCTP_BUF_NEXT(inp->pkt_last) = m; inp->pkt_last = m; } else { inp->pkt_last = inp->pkt = m; } if ( /* FreeBSD uses a flag passed */ ((flags & PRUS_MORETOCOME) == 0) ) { /* * note with the current version this code will only be used * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for * re-defining sosend to use the sctp_sosend. One can * optionally switch back to this code (by changing back the * definitions) but this is not advisable. This code is used * by FreeBSD when sending a file with sendfile() though. */ int ret; ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); inp->pkt = NULL; inp->control = NULL; return (ret); } else { return (0); } } static int sctp_disconnect(struct socket *so) { struct sctp_inpcb *inp; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { return (ENOTCONN); } SCTP_INP_RLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { if (SCTP_LIST_EMPTY(&inp->sctp_asoc_list)) { /* No connection */ SCTP_INP_RUNLOCK(inp); return (0); } else { struct sctp_association *asoc; struct sctp_tcb *stcb; stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { SCTP_INP_RUNLOCK(inp); return (EINVAL); } SCTP_TCB_LOCK(stcb); asoc = &stcb->asoc; if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { /* We are about to be freed, out of here */ SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); return (0); } if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) || (so->so_rcv.sb_cc > 0)) { if (SCTP_GET_STATE(asoc) != SCTP_STATE_COOKIE_WAIT) { /* Left with Data unread */ struct mbuf *err; err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA); if (err) { /* * Fill in the user * initiated abort */ struct sctp_paramhdr *ph; ph = mtod(err, struct sctp_paramhdr *); SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr); ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT); ph->param_length = htons(SCTP_BUF_LEN(err)); } sctp_send_abort_tcb(stcb, err); SCTP_STAT_INCR_COUNTER32(sctps_aborted); } SCTP_INP_RUNLOCK(inp); if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3); /* No unlock tcb assoc is gone */ return (0); } if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->stream_queue_cnt == 0)) { /* there is nothing queued to send, so done */ if (asoc->locked_on_sending) { goto abort_anyway; } if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) { /* only send SHUTDOWN 1st time thru */ sctp_stop_timers_for_shutdown(stcb); sctp_send_shutdown(stcb, stcb->asoc.primary_destination); sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3); if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } asoc->state = SCTP_STATE_SHUTDOWN_SENT; sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, asoc->primary_destination); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); } } else { /* * we still got (or just got) data to send, * so set SHUTDOWN_PENDING */ /* * XXX sockets draft says that SCTP_EOF * should be sent with no data. currently, * we will allow user data to be sent first * and move to SHUTDOWN-PENDING */ asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); if (asoc->locked_on_sending) { /* Locked to send out the data */ struct sctp_stream_queue_pending *sp; sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead); if (sp == NULL) { SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n", asoc->locked_on_sending->stream_no); } else { if ((sp->length == 0) && (sp->msg_is_complete == 0)) asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT; } } if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) { struct mbuf *op_err; abort_anyway: op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)), 0, M_DONTWAIT, 1, MT_DATA); if (op_err) { /* * Fill in the user * initiated abort */ struct sctp_paramhdr *ph; uint32_t *ippp; SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) + sizeof(uint32_t)); ph = mtod(op_err, struct sctp_paramhdr *); ph->param_type = htons( SCTP_CAUSE_USER_INITIATED_ABT); ph->param_length = htons(SCTP_BUF_LEN(op_err)); ippp = (uint32_t *) (ph + 1); *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4); } stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4; sctp_send_abort_tcb(stcb, op_err); SCTP_STAT_INCR_COUNTER32(sctps_aborted); if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } SCTP_INP_RUNLOCK(inp); sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5); return (0); } } SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); return (0); } /* not reached */ } else { /* UDP model does not support this */ SCTP_INP_RUNLOCK(inp); return EOPNOTSUPP; } } int sctp_shutdown(struct socket *so) { struct sctp_inpcb *inp; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) { return EINVAL; } SCTP_INP_RLOCK(inp); /* For UDP model this is a invalid call */ if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) { /* Restore the flags that the soshutdown took away. */ so->so_rcv.sb_state &= ~SBS_CANTRCVMORE; /* This proc will wakeup for read and do nothing (I hope) */ SCTP_INP_RUNLOCK(inp); return (EOPNOTSUPP); } /* * Ok if we reach here its the TCP model and it is either a SHUT_WR * or SHUT_RDWR. This means we put the shutdown flag against it. */ { struct sctp_tcb *stcb; struct sctp_association *asoc; socantsendmore(so); stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { /* * Ok we hit the case that the shutdown call was * made after an abort or something. Nothing to do * now. */ SCTP_INP_RUNLOCK(inp); return (0); } SCTP_TCB_LOCK(stcb); asoc = &stcb->asoc; if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->stream_queue_cnt == 0)) { if (asoc->locked_on_sending) { goto abort_anyway; } /* there is nothing queued to send, so I'm done... */ if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) { /* only send SHUTDOWN the first time through */ sctp_stop_timers_for_shutdown(stcb); sctp_send_shutdown(stcb, stcb->asoc.primary_destination); sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3); if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } asoc->state = SCTP_STATE_SHUTDOWN_SENT; sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, asoc->primary_destination); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); } } else { /* * we still got (or just got) data to send, so set * SHUTDOWN_PENDING */ asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); if (asoc->locked_on_sending) { /* Locked to send out the data */ struct sctp_stream_queue_pending *sp; sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead); if (sp == NULL) { SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n", asoc->locked_on_sending->stream_no); } else { if ((sp->length == 0) && (sp->msg_is_complete == 0)) { asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT; } } } if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) { struct mbuf *op_err; abort_anyway: op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)), 0, M_DONTWAIT, 1, MT_DATA); if (op_err) { /* Fill in the user initiated abort */ struct sctp_paramhdr *ph; uint32_t *ippp; SCTP_BUF_LEN(op_err) = sizeof(struct sctp_paramhdr) + sizeof(uint32_t); ph = mtod(op_err, struct sctp_paramhdr *); ph->param_type = htons( SCTP_CAUSE_USER_INITIATED_ABT); ph->param_length = htons(SCTP_BUF_LEN(op_err)); ippp = (uint32_t *) (ph + 1); *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6); } stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6; sctp_abort_an_association(stcb->sctp_ep, stcb, SCTP_RESPONSE_TO_USER_REQ, op_err); goto skip_unlock; } } SCTP_TCB_UNLOCK(stcb); } skip_unlock: SCTP_INP_RUNLOCK(inp); return 0; } /* * copies a "user" presentable address and removes embedded scope, etc. * returns 0 on success, 1 on error */ static uint32_t sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa) { struct sockaddr_in6 lsa6; sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa, &lsa6); memcpy(ss, sa, sa->sa_len); return (0); } static size_t sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp, struct sctp_tcb *stcb, size_t limit, struct sockaddr_storage *sas, uint32_t vrf_id) { struct sctp_ifn *sctp_ifn; struct sctp_ifa *sctp_ifa; int loopback_scope, ipv4_local_scope, local_scope, site_scope; size_t actual; int ipv4_addr_legal, ipv6_addr_legal; struct sctp_vrf *vrf; actual = 0; if (limit <= 0) return (actual); if (stcb) { /* Turn on all the appropriate scope */ loopback_scope = stcb->asoc.loopback_scope; ipv4_local_scope = stcb->asoc.ipv4_local_scope; local_scope = stcb->asoc.local_scope; site_scope = stcb->asoc.site_scope; } else { /* Turn on ALL scope, since we look at the EP */ loopback_scope = ipv4_local_scope = local_scope = site_scope = 1; } ipv4_addr_legal = ipv6_addr_legal = 0; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { ipv6_addr_legal = 1; if (SCTP_IPV6_V6ONLY(inp) == 0) { ipv4_addr_legal = 1; } } else { ipv4_addr_legal = 1; } vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { return (0); } if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { /* Skip loopback if loopback_scope not set */ continue; } LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { if (stcb) { /* * For the BOUND-ALL case, the list * associated with a TCB is Always * considered a reverse list.. i.e. * it lists addresses that are NOT * part of the association. If this * is one of those we must skip it. */ if (sctp_is_addr_restricted(stcb, sctp_ifa)) { continue; } } if ((sctp_ifa->address.sa.sa_family == AF_INET) && (ipv4_addr_legal)) { struct sockaddr_in *sin; sin = (struct sockaddr_in *)&sctp_ifa->address.sa; if (sin->sin_addr.s_addr == 0) { /* * we skip unspecifed * addresses */ continue; } if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { continue; } if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) { in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas); ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport; sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6)); actual += sizeof(sizeof(struct sockaddr_in6)); } else { memcpy(sas, sin, sizeof(*sin)); ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport; sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin)); actual += sizeof(*sin); } if (actual >= limit) { return (actual); } } else if ((sctp_ifa->address.sa.sa_family == AF_INET6) && (ipv6_addr_legal)) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa; if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { /* * we skip unspecifed * addresses */ continue; } if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { if (local_scope == 0) continue; if (sin6->sin6_scope_id == 0) { if (sa6_recoverscope(sin6) != 0) /* * bad link * local * address */ continue; } } if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { continue; } memcpy(sas, sin6, sizeof(*sin6)); ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport; sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6)); actual += sizeof(*sin6); if (actual >= limit) { return (actual); } } } } } else { struct sctp_laddr *laddr; /* The list is a NEGATIVE list */ LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (stcb) { if (sctp_is_addr_restricted(stcb, laddr->ifa)) { continue; } } if (sctp_fill_user_address(sas, &laddr->ifa->address.sa)) continue; ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport; sas = (struct sockaddr_storage *)((caddr_t)sas + laddr->ifa->address.sa.sa_len); actual += laddr->ifa->address.sa.sa_len; if (actual >= limit) { return (actual); } } } return (actual); } static size_t sctp_fill_up_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, size_t limit, struct sockaddr_storage *sas) { size_t size = 0; /* fill up addresses for the endpoint's default vrf */ size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas, inp->def_vrf_id); return (size); } static int sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id) { int cnt = 0; struct sctp_vrf *vrf = NULL; /* * In both sub-set bound an bound_all cases we return the MAXIMUM * number of addresses that you COULD get. In reality the sub-set * bound may have an exclusion list for a given TCB OR in the * bound-all case a TCB may NOT include the loopback or other * addresses as well. */ vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { return (0); } if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { struct sctp_ifn *sctp_ifn; struct sctp_ifa *sctp_ifa; LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { /* Count them if they are the right type */ if (sctp_ifa->address.sa.sa_family == AF_INET) { if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) cnt += sizeof(struct sockaddr_in6); else cnt += sizeof(struct sockaddr_in); } else if (sctp_ifa->address.sa.sa_family == AF_INET6) cnt += sizeof(struct sockaddr_in6); } } } else { struct sctp_laddr *laddr; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa->address.sa.sa_family == AF_INET) { if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) cnt += sizeof(struct sockaddr_in6); else cnt += sizeof(struct sockaddr_in); } else if (laddr->ifa->address.sa.sa_family == AF_INET6) cnt += sizeof(struct sockaddr_in6); } } return (cnt); } static int sctp_count_max_addresses(struct sctp_inpcb *inp) { int cnt = 0; /* count addresses for the endpoint's default VRF */ cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id); return (cnt); } static int sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval, size_t optsize, void *p, int delay) { int error = 0; int creat_lock_on = 0; struct sctp_tcb *stcb = NULL; struct sockaddr *sa; int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr; int added = 0; uint32_t vrf_id; int bad_addresses = 0; sctp_assoc_t *a_id; SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n"); if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { /* We are already connected AND the TCP model */ return (EADDRINUSE); } if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) { return (EINVAL); } if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { SCTP_INP_RLOCK(inp); stcb = LIST_FIRST(&inp->sctp_asoc_list); SCTP_INP_RUNLOCK(inp); } if (stcb) { return (EALREADY); } SCTP_INP_INCR_REF(inp); SCTP_ASOC_CREATE_LOCK(inp); creat_lock_on = 1; if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { error = EFAULT; goto out_now; } totaddrp = (int *)optval; totaddr = *totaddrp; sa = (struct sockaddr *)(totaddrp + 1); stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses); if ((stcb != NULL) || bad_addresses) { /* Already have or am bring up an association */ SCTP_ASOC_CREATE_UNLOCK(inp); creat_lock_on = 0; if (stcb) SCTP_TCB_UNLOCK(stcb); if (bad_addresses == 0) error = EALREADY; goto out_now; } #ifdef INET6 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) && (num_v6 > 0)) { error = EINVAL; goto out_now; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && (num_v4 > 0)) { struct in6pcb *inp6; inp6 = (struct in6pcb *)inp; if (SCTP_IPV6_V6ONLY(inp6)) { /* * if IPV6_V6ONLY flag, ignore connections destined * to a v4 addr or v4-mapped addr */ error = EINVAL; goto out_now; } } #endif /* INET6 */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == SCTP_PCB_FLAGS_UNBOUND) { /* Bind a ephemeral port */ error = sctp_inpcb_bind(so, NULL, NULL, p); if (error) { goto out_now; } } /* FIX ME: do we want to pass in a vrf on the connect call? */ vrf_id = inp->def_vrf_id; /* We are GOOD to go */ stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0, vrf_id); if (stcb == NULL) { /* Gak! no memory */ goto out_now; } stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; /* move to second address */ if (sa->sa_family == AF_INET) sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in)); else sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6)); error = 0; added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error); /* Fill in the return id */ if (error) { sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_12); goto out_now; } a_id = (sctp_assoc_t *) optval; *a_id = sctp_get_associd(stcb); /* initialize authentication parameters for the assoc */ sctp_initialize_auth_params(inp, stcb); if (delay) { /* doing delayed connection */ stcb->asoc.delayed_connection = 1; sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination); } else { (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); sctp_send_initiate(inp, stcb); } SCTP_TCB_UNLOCK(stcb); if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; /* Set the connected flag so we can queue data */ soisconnecting(so); } out_now: if (creat_lock_on) { SCTP_ASOC_CREATE_UNLOCK(inp); } SCTP_INP_DECR_REF(inp); return error; } #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \ if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\ (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \ SCTP_INP_RLOCK(inp); \ stcb = LIST_FIRST(&inp->sctp_asoc_list); \ if (stcb) { \ SCTP_TCB_LOCK(stcb); \ } \ SCTP_INP_RUNLOCK(inp); \ } else if (assoc_id != 0) { \ stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \ if (stcb == NULL) { \ error = ENOENT; \ break; \ } \ } else { \ stcb = NULL; \ } \ } #define SCTP_CHECK_AND_CAST(destp, srcp, type, size) {\ if (size < sizeof(type)) { \ error = EINVAL; \ break; \ } else { \ destp = (type *)srcp; \ } \ } static int sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize, void *p) { struct sctp_inpcb *inp; int error, val = 0; struct sctp_tcb *stcb = NULL; if (optval == NULL) { return (EINVAL); } inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) return EINVAL; error = 0; switch (optname) { case SCTP_NODELAY: case SCTP_AUTOCLOSE: case SCTP_EXPLICIT_EOR: case SCTP_AUTO_ASCONF: case SCTP_DISABLE_FRAGMENTS: case SCTP_I_WANT_MAPPED_V4_ADDR: case SCTP_USE_EXT_RCVINFO: SCTP_INP_RLOCK(inp); switch (optname) { case SCTP_DISABLE_FRAGMENTS: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT); break; case SCTP_I_WANT_MAPPED_V4_ADDR: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4); break; case SCTP_AUTO_ASCONF: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF); break; case SCTP_EXPLICIT_EOR: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR); break; case SCTP_NODELAY: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY); break; case SCTP_USE_EXT_RCVINFO: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO); break; case SCTP_AUTOCLOSE: if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE)) val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time); else val = 0; break; default: error = ENOPROTOOPT; } /* end switch (sopt->sopt_name) */ if (optname != SCTP_AUTOCLOSE) { /* make it an "on/off" value */ val = (val != 0); } if (*optsize < sizeof(val)) { error = EINVAL; } SCTP_INP_RUNLOCK(inp); if (error == 0) { /* return the option value */ *(int *)optval = val; *optsize = sizeof(val); } break; case SCTP_GET_PACKET_LOG: { #ifdef SCTP_PACKET_LOGGING uint8_t *target; int ret; SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize); ret = sctp_copy_out_packet_log(target, (int)*optsize); *optsize = ret; #else error = EOPNOTSUPP; #endif break; } case SCTP_PARTIAL_DELIVERY_POINT: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); *value = inp->partial_delivery_point; *optsize = sizeof(uint32_t); } break; case SCTP_FRAGMENT_INTERLEAVE: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) { if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) { *value = SCTP_FRAG_LEVEL_2; } else { *value = SCTP_FRAG_LEVEL_1; } } else { *value = SCTP_FRAG_LEVEL_0; } *optsize = sizeof(uint32_t); } break; case SCTP_CMT_ON_OFF: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); if (sctp_cmt_on_off) { SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.sctp_cmt_on_off; SCTP_TCB_UNLOCK(stcb); } else { error = ENOTCONN; } } else { error = ENOPROTOOPT; } *optsize = sizeof(*av); } break; case SCTP_GET_ADDR_LEN: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); error = EINVAL; #ifdef INET if (av->assoc_value == AF_INET) { av->assoc_value = sizeof(struct sockaddr_in); error = 0; } #endif #ifdef INET6 if (av->assoc_value == AF_INET6) { av->assoc_value = sizeof(struct sockaddr_in6); error = 0; } #endif *optsize = sizeof(*av); } break; case SCTP_GET_ASSOC_NUMBER: { uint32_t *value, cnt; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); cnt = 0; SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { cnt++; } SCTP_INP_RUNLOCK(inp); *value = cnt; *optsize = sizeof(uint32_t); } break; case SCTP_GET_ASSOC_ID_LIST: { struct sctp_assoc_ids *ids; unsigned int at, limit; SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize); at = 0; limit = *optsize / sizeof(sctp_assoc_t); SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { if (at < limit) { ids->gaids_assoc_id[at++] = sctp_get_associd(stcb); } else { error = EINVAL; break; } } SCTP_INP_RUNLOCK(inp); *optsize = at * sizeof(sctp_assoc_t); } break; case SCTP_CONTEXT: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.context; SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_RLOCK(inp); av->assoc_value = inp->sctp_context; SCTP_INP_RUNLOCK(inp); } *optsize = sizeof(*av); } break; case SCTP_VRF_ID: { uint32_t *default_vrfid; SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize); *default_vrfid = inp->def_vrf_id; break; } case SCTP_GET_ASOC_VRF: { struct sctp_assoc_value *id; SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, id->assoc_id); if (stcb == NULL) { error = EINVAL; break; } id->assoc_value = stcb->asoc.vrf_id; break; } case SCTP_GET_VRF_IDS: { error = EOPNOTSUPP; break; } case SCTP_GET_NONCE_VALUES: { struct sctp_get_nonce_values *gnv; SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize); SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id); if (stcb) { gnv->gn_peers_tag = stcb->asoc.peer_vtag; gnv->gn_local_tag = stcb->asoc.my_vtag; SCTP_TCB_UNLOCK(stcb); } else { error = ENOTCONN; } *optsize = sizeof(*gnv); } break; case SCTP_DELAYED_SACK: { struct sctp_sack_info *sack; SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize); SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id); if (stcb) { sack->sack_delay = stcb->asoc.delayed_ack; sack->sack_freq = stcb->asoc.sack_freq; SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_RLOCK(inp); sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]); sack->sack_freq = inp->sctp_ep.sctp_sack_freq; SCTP_INP_RUNLOCK(inp); } *optsize = sizeof(*sack); } break; case SCTP_GET_SNDBUF_USE: { struct sctp_sockstat *ss; SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize); SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id); if (stcb) { ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size; ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue + stcb->asoc.size_on_all_streams); SCTP_TCB_UNLOCK(stcb); } else { error = ENOTCONN; } *optsize = sizeof(struct sctp_sockstat); } break; case SCTP_MAX_BURST: { uint8_t *value; SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize); SCTP_INP_RLOCK(inp); *value = inp->sctp_ep.max_burst; SCTP_INP_RUNLOCK(inp); *optsize = sizeof(uint8_t); } break; case SCTP_MAXSEG: { struct sctp_assoc_value *av; int ovh; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc); SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_RLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { ovh = SCTP_MED_OVERHEAD; } else { ovh = SCTP_MED_V4_OVERHEAD; } if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT) av->assoc_value = 0; else av->assoc_value = inp->sctp_frag_point - ovh; SCTP_INP_RUNLOCK(inp); } *optsize = sizeof(struct sctp_assoc_value); } break; case SCTP_GET_STAT_LOG: error = sctp_fill_stat_log(optval, optsize); break; case SCTP_EVENTS: { struct sctp_event_subscribe *events; SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize); memset(events, 0, sizeof(*events)); SCTP_INP_RLOCK(inp); if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT)) events->sctp_data_io_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT)) events->sctp_association_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT)) events->sctp_address_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT)) events->sctp_send_failure_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR)) events->sctp_peer_error_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) events->sctp_shutdown_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT)) events->sctp_partial_delivery_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) events->sctp_adaptation_layer_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT)) events->sctp_authentication_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) events->sctp_stream_reset_events = 1; SCTP_INP_RUNLOCK(inp); *optsize = sizeof(struct sctp_event_subscribe); } break; case SCTP_ADAPTATION_LAYER: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); SCTP_INP_RLOCK(inp); *value = inp->sctp_ep.adaptation_layer_indicator; SCTP_INP_RUNLOCK(inp); *optsize = sizeof(uint32_t); } break; case SCTP_SET_INITIAL_DBG_SEQ: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); SCTP_INP_RLOCK(inp); *value = inp->sctp_ep.initial_sequence_debug; SCTP_INP_RUNLOCK(inp); *optsize = sizeof(uint32_t); } break; case SCTP_GET_LOCAL_ADDR_SIZE: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); SCTP_INP_RLOCK(inp); *value = sctp_count_max_addresses(inp); SCTP_INP_RUNLOCK(inp); *optsize = sizeof(uint32_t); } break; case SCTP_GET_REMOTE_ADDR_SIZE: { uint32_t *value; size_t size; struct sctp_nets *net; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); /* FIXME MT: change to sctp_assoc_value? */ SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value); if (stcb) { size = 0; /* Count the sizes */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) || (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) { size += sizeof(struct sockaddr_in6); } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) { size += sizeof(struct sockaddr_in); } else { /* huh */ break; } } SCTP_TCB_UNLOCK(stcb); *value = (uint32_t) size; } else { error = ENOTCONN; } *optsize = sizeof(uint32_t); } break; case SCTP_GET_PEER_ADDRESSES: /* * Get the address information, an array is passed in to * fill up we pack it. */ { size_t cpsz, left; struct sockaddr_storage *sas; struct sctp_nets *net; struct sctp_getaddresses *saddr; SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize); SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id); if (stcb) { left = (*optsize) - sizeof(struct sctp_getaddresses); *optsize = sizeof(struct sctp_getaddresses); sas = (struct sockaddr_storage *)&saddr->addr[0]; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) || (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) { cpsz = sizeof(struct sockaddr_in6); } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) { cpsz = sizeof(struct sockaddr_in); } else { /* huh */ break; } if (left < cpsz) { /* not enough room. */ break; } if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) && (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) { /* Must map the address */ in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr, (struct sockaddr_in6 *)sas); } else { memcpy(sas, &net->ro._l_addr, cpsz); } ((struct sockaddr_in *)sas)->sin_port = stcb->rport; sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz); left -= cpsz; *optsize += cpsz; } SCTP_TCB_UNLOCK(stcb); } else { error = ENOENT; } } break; case SCTP_GET_LOCAL_ADDRESSES: { size_t limit, actual; struct sockaddr_storage *sas; struct sctp_getaddresses *saddr; SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize); SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id); sas = (struct sockaddr_storage *)&saddr->addr[0]; limit = *optsize - sizeof(sctp_assoc_t); actual = sctp_fill_up_addresses(inp, stcb, limit, sas); if (stcb) { SCTP_TCB_UNLOCK(stcb); } *optsize = sizeof(struct sockaddr_storage) + actual; } break; case SCTP_PEER_ADDR_PARAMS: { struct sctp_paddrparams *paddrp; struct sctp_nets *net; SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize); SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id); net = NULL; if (stcb) { net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if (stcb) { /* Applys to the specific association */ paddrp->spp_flags = 0; if (net) { int ovh; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { ovh = SCTP_MED_OVERHEAD; } else { ovh = SCTP_MED_V4_OVERHEAD; } paddrp->spp_pathmaxrxt = net->failure_threshold; paddrp->spp_pathmtu = net->mtu - ovh; /* get flags for HB */ if (net->dest_state & SCTP_ADDR_NOHB) paddrp->spp_flags |= SPP_HB_DISABLE; else paddrp->spp_flags |= SPP_HB_ENABLE; /* get flags for PMTU */ if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { paddrp->spp_flags |= SPP_PMTUD_ENABLE; } else { paddrp->spp_flags |= SPP_PMTUD_DISABLE; } #ifdef INET if (net->ro._l_addr.sin.sin_family == AF_INET) { paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc; paddrp->spp_flags |= SPP_IPV4_TOS; } #endif #ifdef INET6 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) { paddrp->spp_ipv6_flowlabel = net->tos_flowlabel; paddrp->spp_flags |= SPP_IPV6_FLOWLABEL; } #endif } else { /* * No destination so return default * value */ int cnt = 0; paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure; paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc); #ifdef INET paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc; paddrp->spp_flags |= SPP_IPV4_TOS; #endif #ifdef INET6 paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel; paddrp->spp_flags |= SPP_IPV6_FLOWLABEL; #endif /* default settings should be these */ if (stcb->asoc.hb_is_disabled == 0) { paddrp->spp_flags |= SPP_HB_ENABLE; } else { paddrp->spp_flags |= SPP_HB_DISABLE; } TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { cnt++; } } if (cnt) { paddrp->spp_flags |= SPP_PMTUD_ENABLE; } } paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay; paddrp->spp_assoc_id = sctp_get_associd(stcb); SCTP_TCB_UNLOCK(stcb); } else { /* Use endpoint defaults */ SCTP_INP_RLOCK(inp); paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure; paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]); paddrp->spp_assoc_id = (sctp_assoc_t) 0; /* get inp's default */ #ifdef INET paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos; paddrp->spp_flags |= SPP_IPV4_TOS; #endif #ifdef INET6 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo; paddrp->spp_flags |= SPP_IPV6_FLOWLABEL; } #endif /* can't return this */ paddrp->spp_pathmtu = 0; /* default behavior, no stcb */ paddrp->spp_flags = SPP_PMTUD_ENABLE; if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) { paddrp->spp_flags |= SPP_HB_ENABLE; } else { paddrp->spp_flags |= SPP_HB_DISABLE; } SCTP_INP_RUNLOCK(inp); } *optsize = sizeof(struct sctp_paddrparams); } break; case SCTP_GET_PEER_ADDR_INFO: { struct sctp_paddrinfo *paddri; struct sctp_nets *net; SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize); SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id); net = NULL; if (stcb) { net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb) && (net)) { paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB); paddri->spinfo_cwnd = net->cwnd; paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1; paddri->spinfo_rto = net->RTO; paddri->spinfo_assoc_id = sctp_get_associd(stcb); SCTP_TCB_UNLOCK(stcb); } else { if (stcb) { SCTP_TCB_UNLOCK(stcb); } error = ENOENT; } *optsize = sizeof(struct sctp_paddrinfo); } break; case SCTP_PCB_STATUS: { struct sctp_pcbinfo *spcb; SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize); sctp_fill_pcbinfo(spcb); *optsize = sizeof(struct sctp_pcbinfo); } break; case SCTP_STATUS: { struct sctp_nets *net; struct sctp_status *sstat; SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize); SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id); if (stcb == NULL) { error = EINVAL; break; } /* * I think passing the state is fine since * sctp_constants.h will be available to the user * land. */ sstat->sstat_state = stcb->asoc.state; sstat->sstat_rwnd = stcb->asoc.peers_rwnd; sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt; /* * We can't include chunks that have been passed to * the socket layer. Only things in queue. */ sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue + stcb->asoc.cnt_on_all_streams); sstat->sstat_instrms = stcb->asoc.streamincnt; sstat->sstat_outstrms = stcb->asoc.streamoutcnt; sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc); memcpy(&sstat->sstat_primary.spinfo_address, &stcb->asoc.primary_destination->ro._l_addr, ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len); net = stcb->asoc.primary_destination; ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport; /* * Again the user can get info from sctp_constants.h * for what the state of the network is. */ sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK; sstat->sstat_primary.spinfo_cwnd = net->cwnd; sstat->sstat_primary.spinfo_srtt = net->lastsa; sstat->sstat_primary.spinfo_rto = net->RTO; sstat->sstat_primary.spinfo_mtu = net->mtu; sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb); SCTP_TCB_UNLOCK(stcb); *optsize = sizeof(*sstat); } break; case SCTP_RTOINFO: { struct sctp_rtoinfo *srto; SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize); SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id); if (stcb) { srto->srto_initial = stcb->asoc.initial_rto; srto->srto_max = stcb->asoc.maxrto; srto->srto_min = stcb->asoc.minrto; SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_RLOCK(inp); srto->srto_initial = inp->sctp_ep.initial_rto; srto->srto_max = inp->sctp_ep.sctp_maxrto; srto->srto_min = inp->sctp_ep.sctp_minrto; SCTP_INP_RUNLOCK(inp); } *optsize = sizeof(*srto); } break; case SCTP_ASSOCINFO: { struct sctp_assocparams *sasoc; SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize); SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id); if (stcb) { sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times; sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets; sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd; sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd; sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life); SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_RLOCK(inp); sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times; sasoc->sasoc_number_peer_destinations = 0; sasoc->sasoc_peer_rwnd = 0; sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv); sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life); SCTP_INP_RUNLOCK(inp); } *optsize = sizeof(*sasoc); } break; case SCTP_DEFAULT_SEND_PARAM: { struct sctp_sndrcvinfo *s_info; SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize); SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id); if (stcb) { memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send)); SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_RLOCK(inp); memcpy(s_info, &inp->def_send, sizeof(inp->def_send)); SCTP_INP_RUNLOCK(inp); } *optsize = sizeof(*s_info); } break; case SCTP_INITMSG: { struct sctp_initmsg *sinit; SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize); SCTP_INP_RLOCK(inp); sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count; sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome; sinit->sinit_max_attempts = inp->sctp_ep.max_init_times; sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max; SCTP_INP_RUNLOCK(inp); *optsize = sizeof(*sinit); } break; case SCTP_PRIMARY_ADDR: /* we allow a "get" operation on this */ { struct sctp_setprim *ssp; SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize); SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id); if (stcb) { /* simply copy out the sockaddr_storage... */ int len; len = *optsize; if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len) len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len; memcpy(&ssp->ssp_addr, &stcb->asoc.primary_destination->ro._l_addr, len); SCTP_TCB_UNLOCK(stcb); } else { error = EINVAL; } *optsize = sizeof(*ssp); } break; case SCTP_HMAC_IDENT: { struct sctp_hmacalgo *shmac; sctp_hmaclist_t *hmaclist; uint32_t size; int i; SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize); SCTP_INP_RLOCK(inp); hmaclist = inp->sctp_ep.local_hmacs; if (hmaclist == NULL) { /* no HMACs to return */ *optsize = sizeof(*shmac); SCTP_INP_RUNLOCK(inp); break; } /* is there room for all of the hmac ids? */ size = sizeof(*shmac) + (hmaclist->num_algo * sizeof(shmac->shmac_idents[0])); if ((size_t)(*optsize) < size) { error = EINVAL; SCTP_INP_RUNLOCK(inp); break; } /* copy in the list */ for (i = 0; i < hmaclist->num_algo; i++) shmac->shmac_idents[i] = hmaclist->hmac[i]; SCTP_INP_RUNLOCK(inp); *optsize = size; break; } case SCTP_AUTH_ACTIVE_KEY: { struct sctp_authkeyid *scact; SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize); SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id); if (stcb) { /* get the active key on the assoc */ scact->scact_keynumber = stcb->asoc.authinfo.assoc_keyid; SCTP_TCB_UNLOCK(stcb); } else { /* get the endpoint active key */ SCTP_INP_RLOCK(inp); scact->scact_keynumber = inp->sctp_ep.default_keyid; SCTP_INP_RUNLOCK(inp); } *optsize = sizeof(*scact); break; } case SCTP_LOCAL_AUTH_CHUNKS: { struct sctp_authchunks *sac; sctp_auth_chklist_t *chklist = NULL; size_t size = 0; SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize); SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id); if (stcb) { /* get off the assoc */ chklist = stcb->asoc.local_auth_chunks; /* is there enough space? */ size = sctp_auth_get_chklist_size(chklist); if (*optsize < (sizeof(struct sctp_authchunks) + size)) { error = EINVAL; } else { /* copy in the chunks */ (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks); } SCTP_TCB_UNLOCK(stcb); } else { /* get off the endpoint */ SCTP_INP_RLOCK(inp); chklist = inp->sctp_ep.local_auth_chunks; /* is there enough space? */ size = sctp_auth_get_chklist_size(chklist); if (*optsize < (sizeof(struct sctp_authchunks) + size)) { error = EINVAL; } else { /* copy in the chunks */ (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks); } SCTP_INP_RUNLOCK(inp); } *optsize = sizeof(struct sctp_authchunks) + size; break; } case SCTP_PEER_AUTH_CHUNKS: { struct sctp_authchunks *sac; sctp_auth_chklist_t *chklist = NULL; size_t size = 0; SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize); SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id); if (stcb) { /* get off the assoc */ chklist = stcb->asoc.peer_auth_chunks; /* is there enough space? */ size = sctp_auth_get_chklist_size(chklist); if (*optsize < (sizeof(struct sctp_authchunks) + size)) { error = EINVAL; } else { /* copy in the chunks */ (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks); } SCTP_TCB_UNLOCK(stcb); } else { error = ENOENT; } *optsize = sizeof(struct sctp_authchunks) + size; break; } default: error = ENOPROTOOPT; *optsize = 0; break; } /* end switch (sopt->sopt_name) */ return (error); } static int sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, void *p) { int error, set_opt; uint32_t *mopt; struct sctp_tcb *stcb = NULL; struct sctp_inpcb *inp; uint32_t vrf_id; if (optval == NULL) { SCTP_PRINTF("optval is NULL\n"); return (EINVAL); } inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) { SCTP_PRINTF("inp is NULL?\n"); return EINVAL; } vrf_id = inp->def_vrf_id; error = 0; switch (optname) { case SCTP_NODELAY: case SCTP_AUTOCLOSE: case SCTP_AUTO_ASCONF: case SCTP_EXPLICIT_EOR: case SCTP_DISABLE_FRAGMENTS: case SCTP_USE_EXT_RCVINFO: case SCTP_I_WANT_MAPPED_V4_ADDR: /* copy in the option value */ SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize); set_opt = 0; if (error) break; switch (optname) { case SCTP_DISABLE_FRAGMENTS: set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT; break; case SCTP_AUTO_ASCONF: set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF; break; case SCTP_EXPLICIT_EOR: set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR; break; case SCTP_USE_EXT_RCVINFO: set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO; break; case SCTP_I_WANT_MAPPED_V4_ADDR: if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4; } else { return (EINVAL); } break; case SCTP_NODELAY: set_opt = SCTP_PCB_FLAGS_NODELAY; break; case SCTP_AUTOCLOSE: if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { return (EINVAL); } set_opt = SCTP_PCB_FLAGS_AUTOCLOSE; /* * The value is in ticks. Note this does not effect * old associations, only new ones. */ inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt); break; } SCTP_INP_WLOCK(inp); if (*mopt != 0) { sctp_feature_on(inp, set_opt); } else { sctp_feature_off(inp, set_opt); } SCTP_INP_WUNLOCK(inp); break; case SCTP_PARTIAL_DELIVERY_POINT: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize); if (*value > SCTP_SB_LIMIT_RCV(so)) { error = EINVAL; break; } inp->partial_delivery_point = *value; } break; case SCTP_FRAGMENT_INTERLEAVE: /* not yet until we re-write sctp_recvmsg() */ { uint32_t *level; SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize); if (*level == SCTP_FRAG_LEVEL_2) { sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); } else if (*level == SCTP_FRAG_LEVEL_1) { sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); } else if (*level == SCTP_FRAG_LEVEL_0) { sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); } else { error = EINVAL; } } break; case SCTP_CMT_ON_OFF: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); if (sctp_cmt_on_off) { SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value; SCTP_TCB_UNLOCK(stcb); } else { error = ENOTCONN; } } else { error = ENOPROTOOPT; } } break; case SCTP_CLR_STAT_LOG: error = EOPNOTSUPP; break; case SCTP_CONTEXT: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { stcb->asoc.context = av->assoc_value; SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_WLOCK(inp); inp->sctp_context = av->assoc_value; SCTP_INP_WUNLOCK(inp); } } break; case SCTP_VRF_ID: { uint32_t *default_vrfid; SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize); if (*default_vrfid > SCTP_MAX_VRF_ID) { error = EINVAL; break; } inp->def_vrf_id = *default_vrfid; break; } case SCTP_DEL_VRF_ID: { error = EOPNOTSUPP; break; } case SCTP_ADD_VRF_ID: { error = EOPNOTSUPP; break; } case SCTP_DELAYED_SACK: { struct sctp_sack_info *sack; SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize); SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id); if (stcb) { if (sack->sack_delay) { if (MSEC_TO_TICKS(sack->sack_delay) < 1) { sack->sack_delay = TICKS_TO_MSEC(1); } stcb->asoc.delayed_ack = sack->sack_delay; } if (sack->sack_freq) { stcb->asoc.sack_freq = sack->sack_freq; } SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_WLOCK(inp); if (sack->sack_delay) { if (MSEC_TO_TICKS(sack->sack_delay) < 1) { sack->sack_delay = TICKS_TO_MSEC(1); } inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay); } if (sack->sack_freq) { inp->sctp_ep.sctp_sack_freq = sack->sack_freq; } SCTP_INP_WUNLOCK(inp); } break; } case SCTP_AUTH_CHUNK: { struct sctp_authchunk *sauth; SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize); SCTP_INP_WLOCK(inp); if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) error = EINVAL; SCTP_INP_WUNLOCK(inp); break; } case SCTP_AUTH_KEY: { struct sctp_authkey *sca; struct sctp_keyhead *shared_keys; sctp_sharedkey_t *shared_key; sctp_key_t *key = NULL; size_t size; SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize); SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id); size = optsize - sizeof(*sca); if (stcb) { /* set it on the assoc */ shared_keys = &stcb->asoc.shared_keys; /* clear the cached keys for this key id */ sctp_clear_cachedkeys(stcb, sca->sca_keynumber); /* * create the new shared key and * insert/replace it */ if (size > 0) { key = sctp_set_key(sca->sca_key, (uint32_t) size); if (key == NULL) { error = ENOMEM; SCTP_TCB_UNLOCK(stcb); break; } } shared_key = sctp_alloc_sharedkey(); if (shared_key == NULL) { sctp_free_key(key); error = ENOMEM; SCTP_TCB_UNLOCK(stcb); break; } shared_key->key = key; shared_key->keyid = sca->sca_keynumber; sctp_insert_sharedkey(shared_keys, shared_key); SCTP_TCB_UNLOCK(stcb); } else { /* set it on the endpoint */ SCTP_INP_WLOCK(inp); shared_keys = &inp->sctp_ep.shared_keys; /* * clear the cached keys on all assocs for * this key id */ sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber); /* * create the new shared key and * insert/replace it */ if (size > 0) { key = sctp_set_key(sca->sca_key, (uint32_t) size); if (key == NULL) { error = ENOMEM; SCTP_INP_WUNLOCK(inp); break; } } shared_key = sctp_alloc_sharedkey(); if (shared_key == NULL) { sctp_free_key(key); error = ENOMEM; SCTP_INP_WUNLOCK(inp); break; } shared_key->key = key; shared_key->keyid = sca->sca_keynumber; sctp_insert_sharedkey(shared_keys, shared_key); SCTP_INP_WUNLOCK(inp); } break; } case SCTP_HMAC_IDENT: { struct sctp_hmacalgo *shmac; sctp_hmaclist_t *hmaclist; uint32_t hmacid; size_t size, i, found; SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize); size = (optsize - sizeof(*shmac)) / sizeof(shmac->shmac_idents[0]); hmaclist = sctp_alloc_hmaclist(size); if (hmaclist == NULL) { error = ENOMEM; break; } for (i = 0; i < size; i++) { hmacid = shmac->shmac_idents[i]; if (sctp_auth_add_hmacid(hmaclist, (uint16_t) hmacid)) { /* invalid HMACs were found */ ; error = EINVAL; sctp_free_hmaclist(hmaclist); goto sctp_set_hmac_done; } } found = 0; for (i = 0; i < hmaclist->num_algo; i++) { if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) { /* already in list */ found = 1; } } if (!found) { sctp_free_hmaclist(hmaclist); error = EINVAL; break; } /* set it on the endpoint */ SCTP_INP_WLOCK(inp); if (inp->sctp_ep.local_hmacs) sctp_free_hmaclist(inp->sctp_ep.local_hmacs); inp->sctp_ep.local_hmacs = hmaclist; SCTP_INP_WUNLOCK(inp); sctp_set_hmac_done: break; } case SCTP_AUTH_ACTIVE_KEY: { struct sctp_authkeyid *scact; SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize); SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id); /* set the active key on the right place */ if (stcb) { /* set the active key on the assoc */ if (sctp_auth_setactivekey(stcb, scact->scact_keynumber)) error = EINVAL; SCTP_TCB_UNLOCK(stcb); } else { /* set the active key on the endpoint */ SCTP_INP_WLOCK(inp); if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber)) error = EINVAL; SCTP_INP_WUNLOCK(inp); } break; } case SCTP_AUTH_DELETE_KEY: { struct sctp_authkeyid *scdel; SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize); SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id); /* delete the key from the right place */ if (stcb) { if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber)) error = EINVAL; SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_WLOCK(inp); if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber)) error = EINVAL; SCTP_INP_WUNLOCK(inp); } break; } case SCTP_RESET_STREAMS: { struct sctp_stream_reset *strrst; uint8_t send_in = 0, send_tsn = 0, send_out = 0; int i; SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize); SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id); if (stcb == NULL) { error = ENOENT; break; } if (stcb->asoc.peer_supports_strreset == 0) { /* * Peer does not support it, we return * protocol not supported since this is true * for this feature and this peer, not the * socket request in general. */ error = EPROTONOSUPPORT; SCTP_TCB_UNLOCK(stcb); break; } if (stcb->asoc.stream_reset_outstanding) { error = EALREADY; SCTP_TCB_UNLOCK(stcb); break; } if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) { send_in = 1; } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) { send_out = 1; } else if (strrst->strrst_flags == SCTP_RESET_BOTH) { send_in = 1; send_out = 1; } else if (strrst->strrst_flags == SCTP_RESET_TSN) { send_tsn = 1; } else { error = EINVAL; SCTP_TCB_UNLOCK(stcb); break; } for (i = 0; i < strrst->strrst_num_streams; i++) { if ((send_in) && (strrst->strrst_list[i] > stcb->asoc.streamincnt)) { error = EINVAL; goto get_out; } if ((send_out) && (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) { error = EINVAL; goto get_out; } } if (error) { get_out: SCTP_TCB_UNLOCK(stcb); break; } error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams, strrst->strrst_list, send_out, (stcb->asoc.str_reset_seq_in - 3), send_in, send_tsn); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ); SCTP_TCB_UNLOCK(stcb); } break; case SCTP_CONNECT_X: if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) { error = EINVAL; break; } error = sctp_do_connect_x(so, inp, optval, optsize, p, 0); break; case SCTP_CONNECT_X_DELAYED: if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) { error = EINVAL; break; } error = sctp_do_connect_x(so, inp, optval, optsize, p, 1); break; case SCTP_CONNECT_X_COMPLETE: { struct sockaddr *sa; struct sctp_nets *net; /* FIXME MT: check correct? */ SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize); /* find tcb */ if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { SCTP_INP_RLOCK(inp); stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb) { SCTP_TCB_LOCK(stcb); net = sctp_findnet(stcb, sa); } SCTP_INP_RUNLOCK(inp); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if (stcb == NULL) { error = ENOENT; break; } if (stcb->asoc.delayed_connection == 1) { stcb->asoc.delayed_connection = 0; (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9); sctp_send_initiate(inp, stcb); } else { /* * already expired or did not use delayed * connectx */ error = EALREADY; } SCTP_TCB_UNLOCK(stcb); } break; case SCTP_MAX_BURST: { uint8_t *burst; SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize); SCTP_INP_WLOCK(inp); if (*burst) { inp->sctp_ep.max_burst = *burst; } SCTP_INP_WUNLOCK(inp); } break; case SCTP_MAXSEG: { struct sctp_assoc_value *av; int ovh; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { ovh = SCTP_MED_OVERHEAD; } else { ovh = SCTP_MED_V4_OVERHEAD; } if (stcb) { if (av->assoc_value) { stcb->asoc.sctp_frag_point = (av->assoc_value + ovh); } else { stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT; } SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_WLOCK(inp); /* * FIXME MT: I think this is not in tune * with the API ID */ if (av->assoc_value) { inp->sctp_frag_point = (av->assoc_value + ovh); } else { inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT; } SCTP_INP_WUNLOCK(inp); } } break; case SCTP_EVENTS: { struct sctp_event_subscribe *events; SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize); SCTP_INP_WLOCK(inp); if (events->sctp_data_io_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT); } if (events->sctp_association_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT); } if (events->sctp_address_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT); } if (events->sctp_send_failure_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT); } if (events->sctp_peer_error_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR); } if (events->sctp_shutdown_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT); } if (events->sctp_partial_delivery_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT); } if (events->sctp_adaptation_layer_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT); } if (events->sctp_authentication_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT); } if (events->sctp_stream_reset_events) { sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT); } SCTP_INP_WUNLOCK(inp); } break; case SCTP_ADAPTATION_LAYER: { struct sctp_setadaptation *adap_bits; SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize); SCTP_INP_WLOCK(inp); inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind; SCTP_INP_WUNLOCK(inp); } break; #ifdef SCTP_DEBUG case SCTP_SET_INITIAL_DBG_SEQ: { uint32_t *vvv; SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize); SCTP_INP_WLOCK(inp); inp->sctp_ep.initial_sequence_debug = *vvv; SCTP_INP_WUNLOCK(inp); } break; #endif case SCTP_DEFAULT_SEND_PARAM: { struct sctp_sndrcvinfo *s_info; SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize); SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id); if (stcb) { if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) { memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send))); } else { error = EINVAL; } SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_WLOCK(inp); memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send))); SCTP_INP_WUNLOCK(inp); } } break; case SCTP_PEER_ADDR_PARAMS: /* Applys to the specific association */ { struct sctp_paddrparams *paddrp; struct sctp_nets *net; SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize); SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id); net = NULL; if (stcb) { net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } /* sanity checks */ if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) { if (stcb) SCTP_TCB_UNLOCK(stcb); return (EINVAL); } if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) { if (stcb) SCTP_TCB_UNLOCK(stcb); return (EINVAL); } if (stcb) { /************************TCB SPECIFIC SET ******************/ /* * do we change the timer for HB, we run * only one? */ int ovh = 0; if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { ovh = SCTP_MED_OVERHEAD; } else { ovh = SCTP_MED_V4_OVERHEAD; } if (paddrp->spp_hbinterval) stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval; else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO) stcb->asoc.heart_beat_delay = 0; /* network sets ? */ if (net) { /************************NET SPECIFIC SET ******************/ if (paddrp->spp_flags & SPP_HB_DEMAND) { /* on demand HB */ (void)sctp_send_hb(stcb, 1, net); } if (paddrp->spp_flags & SPP_HB_DISABLE) { net->dest_state |= SCTP_ADDR_NOHB; } if (paddrp->spp_flags & SPP_HB_ENABLE) { net->dest_state &= ~SCTP_ADDR_NOHB; } if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) { if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10); } if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) { net->mtu = paddrp->spp_pathmtu + ovh; if (net->mtu < stcb->asoc.smallest_mtu) { #ifdef SCTP_PRINT_FOR_B_AND_M SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n", net->mtu); #endif sctp_pathmtu_adjustment(inp, stcb, net, net->mtu); } } } if (paddrp->spp_flags & SPP_PMTUD_ENABLE) { if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); } } if (paddrp->spp_pathmaxrxt) net->failure_threshold = paddrp->spp_pathmaxrxt; #ifdef INET if (paddrp->spp_flags & SPP_IPV4_TOS) { if (net->ro._l_addr.sin.sin_family == AF_INET) { net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc; } } #endif #ifdef INET6 if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) { if (net->ro._l_addr.sin6.sin6_family == AF_INET6) { net->tos_flowlabel = paddrp->spp_ipv6_flowlabel; } } #endif } else { /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/ if (paddrp->spp_pathmaxrxt) stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt; if (paddrp->spp_flags & SPP_HB_ENABLE) { /* Turn back on the timer */ stcb->asoc.hb_is_disabled = 0; sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); } if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10); } if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) { net->mtu = paddrp->spp_pathmtu + ovh; if (net->mtu < stcb->asoc.smallest_mtu) { #ifdef SCTP_PRINT_FOR_B_AND_M SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n", net->mtu); #endif sctp_pathmtu_adjustment(inp, stcb, net, net->mtu); } } } } if (paddrp->spp_flags & SPP_PMTUD_ENABLE) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); } } } if (paddrp->spp_flags & SPP_HB_DISABLE) { int cnt_of_unconf = 0; struct sctp_nets *lnet; stcb->asoc.hb_is_disabled = 1; TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) { cnt_of_unconf++; } } /* * stop the timer ONLY if we * have no unconfirmed * addresses */ if (cnt_of_unconf == 0) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11); } } } if (paddrp->spp_flags & SPP_HB_ENABLE) { /* start up the timer. */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); } } #ifdef INET if (paddrp->spp_flags & SPP_IPV4_TOS) stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc; #endif #ifdef INET6 if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel; #endif } SCTP_TCB_UNLOCK(stcb); } else { /************************NO TCB, SET TO default stuff ******************/ SCTP_INP_WLOCK(inp); /* * For the TOS/FLOWLABEL stuff you set it * with the options on the socket */ if (paddrp->spp_pathmaxrxt) { inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt; } if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO) inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0; else if (paddrp->spp_hbinterval) inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval); if (paddrp->spp_flags & SPP_HB_ENABLE) { sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT); } else if (paddrp->spp_flags & SPP_HB_DISABLE) { sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT); } SCTP_INP_WUNLOCK(inp); } } break; case SCTP_RTOINFO: { struct sctp_rtoinfo *srto; uint32_t new_init, new_min, new_max; SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize); SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id); if (stcb) { if (srto->srto_initial) new_init = srto->srto_initial; else new_init = stcb->asoc.initial_rto; if (srto->srto_max) new_max = srto->srto_max; else new_max = stcb->asoc.maxrto; if (srto->srto_min) new_min = srto->srto_min; else new_min = stcb->asoc.minrto; if ((new_min <= new_init) && (new_init <= new_max)) { stcb->asoc.initial_rto = new_init; stcb->asoc.maxrto = new_max; stcb->asoc.minrto = new_min; } else { error = EDOM; } SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_WLOCK(inp); if (srto->srto_initial) new_init = srto->srto_initial; else new_init = inp->sctp_ep.initial_rto; if (srto->srto_max) new_max = srto->srto_max; else new_max = inp->sctp_ep.sctp_maxrto; if (srto->srto_min) new_min = srto->srto_min; else new_min = inp->sctp_ep.sctp_minrto; if ((new_min <= new_init) && (new_init <= new_max)) { inp->sctp_ep.initial_rto = new_init; inp->sctp_ep.sctp_maxrto = new_max; inp->sctp_ep.sctp_minrto = new_min; } else { error = EDOM; } SCTP_INP_WUNLOCK(inp); } } break; case SCTP_ASSOCINFO: { struct sctp_assocparams *sasoc; SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize); SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id); if (stcb) { if (sasoc->sasoc_asocmaxrxt) stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt; sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets; sasoc->sasoc_peer_rwnd = 0; sasoc->sasoc_local_rwnd = 0; if (sasoc->sasoc_cookie_life) { if (sasoc->sasoc_cookie_life < 1000) sasoc->sasoc_cookie_life = 1000; stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life); } SCTP_TCB_UNLOCK(stcb); } else { SCTP_INP_WLOCK(inp); if (sasoc->sasoc_asocmaxrxt) inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt; sasoc->sasoc_number_peer_destinations = 0; sasoc->sasoc_peer_rwnd = 0; sasoc->sasoc_local_rwnd = 0; if (sasoc->sasoc_cookie_life) { if (sasoc->sasoc_cookie_life < 1000) sasoc->sasoc_cookie_life = 1000; inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life); } SCTP_INP_WUNLOCK(inp); } } break; case SCTP_INITMSG: { struct sctp_initmsg *sinit; SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize); SCTP_INP_WLOCK(inp); if (sinit->sinit_num_ostreams) inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams; if (sinit->sinit_max_instreams) inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams; if (sinit->sinit_max_attempts) inp->sctp_ep.max_init_times = sinit->sinit_max_attempts; if (sinit->sinit_max_init_timeo) inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo; SCTP_INP_WUNLOCK(inp); } break; case SCTP_PRIMARY_ADDR: { struct sctp_setprim *spa; struct sctp_nets *net, *lnet; SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize); SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id); net = NULL; if (stcb) { net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&spa->ssp_addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb) && (net)) { if ((net != stcb->asoc.primary_destination) && (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) { /* Ok we need to set it */ lnet = stcb->asoc.primary_destination; if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) { if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) { net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH; } net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY; } } } else { error = EINVAL; } if (stcb) { SCTP_TCB_UNLOCK(stcb); } } break; case SCTP_SET_DYNAMIC_PRIMARY: { union sctp_sockstore *ss; error = priv_check(curthread, PRIV_NETINET_RESERVEDPORT); if (error) break; SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize); /* SUPER USER CHECK? */ error = sctp_dynamic_set_primary(&ss->sa, vrf_id); } break; case SCTP_SET_PEER_PRIMARY_ADDR: { struct sctp_setpeerprim *sspp; SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize); SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id); if (stcb != NULL) { struct sctp_ifa *ifa; ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr, stcb->asoc.vrf_id, 0); if (ifa == NULL) { error = EINVAL; goto out_of_it; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) { /* * Must validate the ifa found is in * our ep */ struct sctp_laddr *laddr; int found = 0; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n", __FUNCTION__); continue; } if (laddr->ifa == ifa) { found = 1; break; } } if (!found) { error = EINVAL; goto out_of_it; } } if (sctp_set_primary_ip_address_sa(stcb, (struct sockaddr *)&sspp->sspp_addr) != 0) { error = EINVAL; } out_of_it: SCTP_TCB_UNLOCK(stcb); } else { error = EINVAL; } } break; case SCTP_BINDX_ADD_ADDR: { struct sctp_getaddresses *addrs; SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize); sctp_bindx_add_address(so, inp, addrs->addr, addrs->sget_assoc_id, vrf_id, &error, p); } break; case SCTP_BINDX_REM_ADDR: { struct sctp_getaddresses *addrs; SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize); sctp_bindx_delete_address(so, inp, addrs->addr, addrs->sget_assoc_id, vrf_id, &error); } break; default: error = ENOPROTOOPT; break; } /* end switch (opt) */ return (error); } int sctp_ctloutput(struct socket *so, struct sockopt *sopt) { void *optval = NULL; size_t optsize = 0; struct sctp_inpcb *inp; void *p; int error = 0; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) { /* I made the same as TCP since we are not setup? */ return (ECONNRESET); } if (sopt->sopt_level != IPPROTO_SCTP) { /* wrong proto level... send back up to IP */ #ifdef INET6 if (INP_CHECK_SOCKAF(so, AF_INET6)) error = ip6_ctloutput(so, sopt); else #endif /* INET6 */ error = ip_ctloutput(so, sopt); return (error); } optsize = sopt->sopt_valsize; if (optsize) { SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT); if (optval == NULL) { return (ENOBUFS); } error = sooptcopyin(sopt, optval, optsize, optsize); if (error) { SCTP_FREE(optval, SCTP_M_SOCKOPT); goto out; } } p = (void *)sopt->sopt_td; if (sopt->sopt_dir == SOPT_SET) { error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p); } else if (sopt->sopt_dir == SOPT_GET) { error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p); } else { error = EINVAL; } if ((error == 0) && (optval != NULL)) { error = sooptcopyout(sopt, optval, optsize); SCTP_FREE(optval, SCTP_M_SOCKOPT); } else if (optval != NULL) { SCTP_FREE(optval, SCTP_M_SOCKOPT); } out: return (error); } static int sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p) { int error = 0; int create_lock_on = 0; uint32_t vrf_id; struct sctp_inpcb *inp; struct sctp_tcb *stcb = NULL; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) { /* I made the same as TCP since we are not setup? */ return (ECONNRESET); } if (addr == NULL) return EINVAL; if ((addr->sa_family == AF_INET6) && (addr->sa_len != sizeof(struct sockaddr_in6))) { return (EINVAL); } if ((addr->sa_family == AF_INET) && (addr->sa_len != sizeof(struct sockaddr_in))) { return (EINVAL); } SCTP_ASOC_CREATE_LOCK(inp); create_lock_on = 1; SCTP_INP_INCR_REF(inp); if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { /* Should I really unlock ? */ error = EFAULT; goto out_now; } #ifdef INET6 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) && (addr->sa_family == AF_INET6)) { error = EINVAL; goto out_now; } #endif /* INET6 */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == SCTP_PCB_FLAGS_UNBOUND) { /* Bind a ephemeral port */ error = sctp_inpcb_bind(so, NULL, NULL, p); if (error) { goto out_now; } } /* Now do we connect? */ if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) { error = EINVAL; goto out_now; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { /* We are already connected AND the TCP model */ error = EADDRINUSE; goto out_now; } if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { SCTP_INP_RLOCK(inp); stcb = LIST_FIRST(&inp->sctp_asoc_list); SCTP_INP_RUNLOCK(inp); } else { /* * We increment here since sctp_findassociation_ep_addr() * wil do a decrement if it finds the stcb as long as the * locked tcb (last argument) is NOT a TCB.. aka NULL. */ SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } else { SCTP_TCB_LOCK(stcb); } } if (stcb != NULL) { /* Already have or am bring up an association */ error = EALREADY; goto out_now; } vrf_id = inp->def_vrf_id; /* We are GOOD to go */ stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id); if (stcb == NULL) { /* Gak! no memory */ goto out_now; } if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; /* Set the connected flag so we can queue data */ soisconnecting(so); } stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); /* initialize authentication parameters for the assoc */ sctp_initialize_auth_params(inp, stcb); sctp_send_initiate(inp, stcb); SCTP_TCB_UNLOCK(stcb); out_now: if (create_lock_on) { SCTP_ASOC_CREATE_UNLOCK(inp); } SCTP_INP_DECR_REF(inp); return error; } int sctp_listen(struct socket *so, int backlog, struct thread *p) { /* * Note this module depends on the protocol processing being called * AFTER any socket level flags and backlog are applied to the * socket. The traditional way that the socket flags are applied is * AFTER protocol processing. We have made a change to the * sys/kern/uipc_socket.c module to reverse this but this MUST be in * place if the socket API for SCTP is to work properly. */ int error = 0; struct sctp_inpcb *inp; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) { /* I made the same as TCP since we are not setup? */ return (ECONNRESET); } SCTP_INP_RLOCK(inp); #ifdef SCTP_LOCK_LOGGING if (sctp_logging_level & SCTP_LOCK_LOGGING_ENABLE) { sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK); } #endif SOCK_LOCK(so); error = solisten_proto_check(so); if (error) { SOCK_UNLOCK(so); SCTP_INP_RUNLOCK(inp); return (error); } if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { /* We are already connected AND the TCP model */ SCTP_INP_RUNLOCK(inp); SOCK_UNLOCK(so); return (EADDRINUSE); } if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { /* We must do a bind. */ SOCK_UNLOCK(so); SCTP_INP_RUNLOCK(inp); if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) { /* bind error, probably perm */ return (error); } SOCK_LOCK(so); } else { SCTP_INP_RUNLOCK(inp); } /* It appears for 7.0 and on, we must always call this. */ solisten_proto(so, backlog); if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) { /* remove the ACCEPTCONN flag for one-to-many sockets */ so->so_options &= ~SO_ACCEPTCONN; } if (backlog == 0) { /* turning off listen */ so->so_options &= ~SO_ACCEPTCONN; } SOCK_UNLOCK(so); return (error); } static int sctp_defered_wakeup_cnt = 0; int sctp_accept(struct socket *so, struct sockaddr **addr) { struct sctp_tcb *stcb; struct sctp_inpcb *inp; union sctp_sockstore store; int error; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == 0) { return (ECONNRESET); } SCTP_INP_RLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) { SCTP_INP_RUNLOCK(inp); return (ENOTSUP); } if (so->so_state & SS_ISDISCONNECTED) { SCTP_INP_RUNLOCK(inp); return (ECONNABORTED); } stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { SCTP_INP_RUNLOCK(inp); return (ECONNRESET); } SCTP_TCB_LOCK(stcb); SCTP_INP_RUNLOCK(inp); store = stcb->asoc.primary_destination->ro._l_addr; SCTP_TCB_UNLOCK(stcb); if (store.sa.sa_family == AF_INET) { struct sockaddr_in *sin; SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin); sin->sin_family = AF_INET; sin->sin_len = sizeof(*sin); sin->sin_port = ((struct sockaddr_in *)&store)->sin_port; sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr; *addr = (struct sockaddr *)sin; } else { struct sockaddr_in6 *sin6; SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); sin6->sin6_family = AF_INET6; sin6->sin6_len = sizeof(*sin6); sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port; sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr; if ((error = sa6_recoverscope(sin6)) != 0) { SCTP_FREE_SONAME(sin6); return (error); } *addr = (struct sockaddr *)sin6; } /* Wake any delayed sleep action */ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { SCTP_INP_WLOCK(inp); inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE; if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) { inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT; SCTP_INP_WUNLOCK(inp); SOCKBUF_LOCK(&inp->sctp_socket->so_snd); if (sowriteable(inp->sctp_socket)) { sowwakeup_locked(inp->sctp_socket); } else { SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd); } SCTP_INP_WLOCK(inp); } if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) { inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT; SCTP_INP_WUNLOCK(inp); SOCKBUF_LOCK(&inp->sctp_socket->so_rcv); if (soreadable(inp->sctp_socket)) { sctp_defered_wakeup_cnt++; sorwakeup_locked(inp->sctp_socket); } else { SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv); } SCTP_INP_WLOCK(inp); } SCTP_INP_WUNLOCK(inp); } return (0); } int sctp_ingetaddr(struct socket *so, struct sockaddr **addr) { struct sockaddr_in *sin; uint32_t vrf_id; struct sctp_inpcb *inp; struct sctp_ifa *sctp_ifa; /* * Do the malloc first in case it blocks. */ SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin); sin->sin_family = AF_INET; sin->sin_len = sizeof(*sin); inp = (struct sctp_inpcb *)so->so_pcb; if (!inp) { SCTP_FREE_SONAME(sin); return ECONNRESET; } SCTP_INP_RLOCK(inp); sin->sin_port = inp->sctp_lport; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { struct sctp_tcb *stcb; struct sockaddr_in *sin_a; struct sctp_nets *net; int fnd; stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { goto notConn; } fnd = 0; sin_a = NULL; SCTP_TCB_LOCK(stcb); TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { sin_a = (struct sockaddr_in *)&net->ro._l_addr; if (sin_a == NULL) /* this will make coverity happy */ continue; if (sin_a->sin_family == AF_INET) { fnd = 1; break; } } if ((!fnd) || (sin_a == NULL)) { /* punt */ SCTP_TCB_UNLOCK(stcb); goto notConn; } vrf_id = inp->def_vrf_id; sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *) & net->ro, net, 0, vrf_id); if (sctp_ifa) { sin->sin_addr = sctp_ifa->address.sin.sin_addr; sctp_free_ifa(sctp_ifa); } SCTP_TCB_UNLOCK(stcb); } else { /* For the bound all case you get back 0 */ notConn: sin->sin_addr.s_addr = 0; } } else { /* Take the first IPv4 address in the list */ struct sctp_laddr *laddr; int fnd = 0; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa->address.sa.sa_family == AF_INET) { struct sockaddr_in *sin_a; sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa; sin->sin_addr = sin_a->sin_addr; fnd = 1; break; } } if (!fnd) { SCTP_FREE_SONAME(sin); SCTP_INP_RUNLOCK(inp); return ENOENT; } } SCTP_INP_RUNLOCK(inp); (*addr) = (struct sockaddr *)sin; return (0); } int sctp_peeraddr(struct socket *so, struct sockaddr **addr) { struct sockaddr_in *sin = (struct sockaddr_in *)*addr; int fnd; struct sockaddr_in *sin_a; struct sctp_inpcb *inp; struct sctp_tcb *stcb; struct sctp_nets *net; /* Do the malloc first in case it blocks. */ inp = (struct sctp_inpcb *)so->so_pcb; if ((inp == NULL) || ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { /* UDP type and listeners will drop out here */ return (ENOTCONN); } SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin); sin->sin_family = AF_INET; sin->sin_len = sizeof(*sin); /* We must recapture incase we blocked */ inp = (struct sctp_inpcb *)so->so_pcb; if (!inp) { SCTP_FREE_SONAME(sin); return ECONNRESET; } SCTP_INP_RLOCK(inp); stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb) { SCTP_TCB_LOCK(stcb); } SCTP_INP_RUNLOCK(inp); if (stcb == NULL) { SCTP_FREE_SONAME(sin); return ECONNRESET; } fnd = 0; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { sin_a = (struct sockaddr_in *)&net->ro._l_addr; if (sin_a->sin_family == AF_INET) { fnd = 1; sin->sin_port = stcb->rport; sin->sin_addr = sin_a->sin_addr; break; } } SCTP_TCB_UNLOCK(stcb); if (!fnd) { /* No IPv4 address */ SCTP_FREE_SONAME(sin); return ENOENT; } (*addr) = (struct sockaddr *)sin; return (0); } struct pr_usrreqs sctp_usrreqs = { .pru_abort = sctp_abort, .pru_accept = sctp_accept, .pru_attach = sctp_attach, .pru_bind = sctp_bind, .pru_connect = sctp_connect, .pru_control = in_control, .pru_close = sctp_close, .pru_detach = sctp_close, .pru_sopoll = sopoll_generic, .pru_disconnect = sctp_disconnect, .pru_listen = sctp_listen, .pru_peeraddr = sctp_peeraddr, .pru_send = sctp_sendm, .pru_shutdown = sctp_shutdown, .pru_sockaddr = sctp_ingetaddr, .pru_sosend = sctp_sosend, .pru_soreceive = sctp_soreceive };