diff options
Diffstat (limited to 'net/sctp')
-rw-r--r-- | net/sctp/associola.c | 4 | ||||
-rw-r--r-- | net/sctp/debug.c | 8 | ||||
-rw-r--r-- | net/sctp/input.c | 24 | ||||
-rw-r--r-- | net/sctp/ipv6.c | 4 | ||||
-rw-r--r-- | net/sctp/proc.c | 4 | ||||
-rw-r--r-- | net/sctp/sm_statetable.c | 2 | ||||
-rw-r--r-- | net/sctp/socket.c | 163 | ||||
-rw-r--r-- | net/sctp/transport.c | 39 |
8 files changed, 172 insertions, 76 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c index df94e3cdfba..498edb0cd4e 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -1231,6 +1231,10 @@ void sctp_assoc_sync_pmtu(struct sctp_association *asoc) /* Get the lowest pmtu of all the transports. */ list_for_each(pos, &asoc->peer.transport_addr_list) { t = list_entry(pos, struct sctp_transport, transports); + if (t->pmtu_pending && t->dst) { + sctp_transport_update_pmtu(t, dst_mtu(t->dst)); + t->pmtu_pending = 0; + } if (!pmtu || (t->pathmtu < pmtu)) pmtu = t->pathmtu; } diff --git a/net/sctp/debug.c b/net/sctp/debug.c index e8c0f7435d7..80f70aa5338 100644 --- a/net/sctp/debug.c +++ b/net/sctp/debug.c @@ -77,8 +77,6 @@ static const char *sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = { /* Lookup "chunk type" debug name. */ const char *sctp_cname(const sctp_subtype_t cid) { - if (cid.chunk < 0) - return "illegal chunk id"; if (cid.chunk <= SCTP_CID_BASE_MAX) return sctp_cid_tbl[cid.chunk]; @@ -146,8 +144,6 @@ static const char *sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = { /* Lookup primitive debug name. */ const char *sctp_pname(const sctp_subtype_t id) { - if (id.primitive < 0) - return "illegal primitive"; if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX) return sctp_primitive_tbl[id.primitive]; return "unknown_primitive"; @@ -161,8 +157,6 @@ static const char *sctp_other_tbl[] = { /* Lookup "other" debug name. */ const char *sctp_oname(const sctp_subtype_t id) { - if (id.other < 0) - return "illegal 'other' event"; if (id.other <= SCTP_EVENT_OTHER_MAX) return sctp_other_tbl[id.other]; return "unknown 'other' event"; @@ -184,8 +178,6 @@ static const char *sctp_timer_tbl[] = { /* Lookup timer debug name. */ const char *sctp_tname(const sctp_subtype_t id) { - if (id.timeout < 0) - return "illegal 'timer' event"; if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX) return sctp_timer_tbl[id.timeout]; return "unknown_timer"; diff --git a/net/sctp/input.c b/net/sctp/input.c index 885109fb3dd..d57ff7f3c57 100644 --- a/net/sctp/input.c +++ b/net/sctp/input.c @@ -367,24 +367,18 @@ static void sctp_add_backlog(struct sock *sk, struct sk_buff *skb) void sctp_icmp_frag_needed(struct sock *sk, struct sctp_association *asoc, struct sctp_transport *t, __u32 pmtu) { - if (sock_owned_by_user(sk) || !t || (t->pathmtu == pmtu)) + if (!t || (t->pathmtu == pmtu)) return; + if (sock_owned_by_user(sk)) { + asoc->pmtu_pending = 1; + t->pmtu_pending = 1; + return; + } + if (t->param_flags & SPP_PMTUD_ENABLE) { - if (unlikely(pmtu < SCTP_DEFAULT_MINSEGMENT)) { - printk(KERN_WARNING "%s: Reported pmtu %d too low, " - "using default minimum of %d\n", - __FUNCTION__, pmtu, - SCTP_DEFAULT_MINSEGMENT); - /* Use default minimum segment size and disable - * pmtu discovery on this transport. - */ - t->pathmtu = SCTP_DEFAULT_MINSEGMENT; - t->param_flags = (t->param_flags & ~SPP_PMTUD) | - SPP_PMTUD_DISABLE; - } else { - t->pathmtu = pmtu; - } + /* Update transports view of the MTU */ + sctp_transport_update_pmtu(t, pmtu); /* Update association pmtu. */ sctp_assoc_sync_pmtu(asoc); diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index 84cd53635fe..2c29394fd92 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -844,6 +844,10 @@ static int sctp_inet6_bind_verify(struct sctp_sock *opt, union sctp_addr *addr) dev = dev_get_by_index(addr->v6.sin6_scope_id); if (!dev) return 0; + if (!ipv6_chk_addr(&addr->v6.sin6_addr, dev, 0)) { + dev_put(dev); + return 0; + } dev_put(dev); } af = opt->pf->af; diff --git a/net/sctp/proc.c b/net/sctp/proc.c index 2f12bf2d8d3..e4cd841a22e 100644 --- a/net/sctp/proc.c +++ b/net/sctp/proc.c @@ -250,7 +250,7 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v) return 0; } -static struct seq_operations sctp_eps_ops = { +static const struct seq_operations sctp_eps_ops = { .start = sctp_eps_seq_start, .next = sctp_eps_seq_next, .stop = sctp_eps_seq_stop, @@ -361,7 +361,7 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v) return 0; } -static struct seq_operations sctp_assoc_ops = { +static const struct seq_operations sctp_assoc_ops = { .start = sctp_assocs_seq_start, .next = sctp_assocs_seq_next, .stop = sctp_assocs_seq_stop, diff --git a/net/sctp/sm_statetable.c b/net/sctp/sm_statetable.c index 523071c7902..70a91ece3c4 100644 --- a/net/sctp/sm_statetable.c +++ b/net/sctp/sm_statetable.c @@ -960,7 +960,7 @@ static const sctp_sm_table_entry_t *sctp_chunk_event_lookup(sctp_cid_t cid, if (state > SCTP_STATE_MAX) return &bug; - if (cid >= 0 && cid <= SCTP_CID_BASE_MAX) + if (cid <= SCTP_CID_BASE_MAX) return &chunk_event_table[cid][state]; if (sctp_prsctp_enable) { diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 4dcdabf5647..b1917f68723 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -333,12 +333,19 @@ SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len) if (!sp->pf->bind_verify(sp, addr)) return -EADDRNOTAVAIL; - /* We must either be unbound, or bind to the same port. */ - if (bp->port && (snum != bp->port)) { - SCTP_DEBUG_PRINTK("sctp_do_bind:" + /* We must either be unbound, or bind to the same port. + * It's OK to allow 0 ports if we are already bound. + * We'll just inhert an already bound port in this case + */ + if (bp->port) { + if (!snum) + snum = bp->port; + else if (snum != bp->port) { + SCTP_DEBUG_PRINTK("sctp_do_bind:" " New port %d does not match existing port " "%d.\n", snum, bp->port); - return -EINVAL; + return -EINVAL; + } } if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) @@ -973,6 +980,7 @@ static int __sctp_connect(struct sock* sk, union sctp_addr *sa_addr; void *addr_buf; unsigned short port; + unsigned int f_flags = 0; sp = sctp_sk(sk); ep = sp->ep; @@ -1099,7 +1107,14 @@ static int __sctp_connect(struct sock* sk, af->to_sk_daddr(&to, sk); sk->sk_err = 0; - timeo = sock_sndtimeo(sk, sk->sk_socket->file->f_flags & O_NONBLOCK); + /* in-kernel sockets don't generally have a file allocated to them + * if all they do is call sock_create_kern(). + */ + if (sk->sk_socket->file) + f_flags = sk->sk_socket->file->f_flags; + + timeo = sock_sndtimeo(sk, f_flags & O_NONBLOCK); + err = sctp_wait_for_connect(asoc, &timeo); /* Don't free association on exit. */ @@ -1655,6 +1670,9 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk, goto out_free; } + if (asoc->pmtu_pending) + sctp_assoc_pending_pmtu(asoc); + /* If fragmentation is disabled and the message length exceeds the * association fragmentation point, return EMSGSIZE. The I-D * does not specify what this error is, but this looks like @@ -3365,12 +3383,13 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len, sctp_assoc_t associd; int retval = 0; - if (len != sizeof(status)) { + if (len < sizeof(status)) { retval = -EINVAL; goto out; } - if (copy_from_user(&status, optval, sizeof(status))) { + len = sizeof(status); + if (copy_from_user(&status, optval, len)) { retval = -EFAULT; goto out; } @@ -3442,12 +3461,13 @@ static int sctp_getsockopt_peer_addr_info(struct sock *sk, int len, struct sctp_transport *transport; int retval = 0; - if (len != sizeof(pinfo)) { + if (len < sizeof(pinfo)) { retval = -EINVAL; goto out; } - if (copy_from_user(&pinfo, optval, sizeof(pinfo))) { + len = sizeof(pinfo); + if (copy_from_user(&pinfo, optval, len)) { retval = -EFAULT; goto out; } @@ -3513,8 +3533,11 @@ static int sctp_getsockopt_disable_fragments(struct sock *sk, int len, static int sctp_getsockopt_events(struct sock *sk, int len, char __user *optval, int __user *optlen) { - if (len != sizeof(struct sctp_event_subscribe)) + if (len < sizeof(struct sctp_event_subscribe)) return -EINVAL; + len = sizeof(struct sctp_event_subscribe); + if (put_user(len, optlen)) + return -EFAULT; if (copy_to_user(optval, &sctp_sk(sk)->subscribe, len)) return -EFAULT; return 0; @@ -3536,9 +3559,12 @@ static int sctp_getsockopt_autoclose(struct sock *sk, int len, char __user *optv /* Applicable to UDP-style socket only */ if (sctp_style(sk, TCP)) return -EOPNOTSUPP; - if (len != sizeof(int)) + if (len < sizeof(int)) return -EINVAL; - if (copy_to_user(optval, &sctp_sk(sk)->autoclose, len)) + len = sizeof(int); + if (put_user(len, optlen)) + return -EFAULT; + if (copy_to_user(optval, &sctp_sk(sk)->autoclose, sizeof(int))) return -EFAULT; return 0; } @@ -3550,6 +3576,7 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc, struct sock *sk = asoc->base.sk; struct socket *sock; struct inet_sock *inetsk; + struct sctp_af *af; int err = 0; /* An association cannot be branched off from an already peeled-off @@ -3571,8 +3598,9 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc, /* Make peeled-off sockets more like 1-1 accepted sockets. * Set the daddr and initialize id to something more random */ + af = sctp_get_af_specific(asoc->peer.primary_addr.sa.sa_family); + af->to_sk_daddr(&asoc->peer.primary_addr, sk); inetsk = inet_sk(sock->sk); - inetsk->daddr = asoc->peer.primary_addr.v4.sin_addr.s_addr; inetsk->id = asoc->next_tsn ^ jiffies; *sockp = sock; @@ -3587,8 +3615,9 @@ static int sctp_getsockopt_peeloff(struct sock *sk, int len, char __user *optval int retval = 0; struct sctp_association *asoc; - if (len != sizeof(sctp_peeloff_arg_t)) + if (len < sizeof(sctp_peeloff_arg_t)) return -EINVAL; + len = sizeof(sctp_peeloff_arg_t); if (copy_from_user(&peeloff, optval, len)) return -EFAULT; @@ -3616,6 +3645,8 @@ static int sctp_getsockopt_peeloff(struct sock *sk, int len, char __user *optval /* Return the fd mapped to the new socket. */ peeloff.sd = retval; + if (put_user(len, optlen)) + return -EFAULT; if (copy_to_user(optval, &peeloff, len)) retval = -EFAULT; @@ -3724,9 +3755,9 @@ static int sctp_getsockopt_peer_addr_params(struct sock *sk, int len, struct sctp_association *asoc = NULL; struct sctp_sock *sp = sctp_sk(sk); - if (len != sizeof(struct sctp_paddrparams)) + if (len < sizeof(struct sctp_paddrparams)) return -EINVAL; - + len = sizeof(struct sctp_paddrparams); if (copy_from_user(¶ms, optval, len)) return -EFAULT; @@ -3825,9 +3856,11 @@ static int sctp_getsockopt_delayed_ack_time(struct sock *sk, int len, struct sctp_association *asoc = NULL; struct sctp_sock *sp = sctp_sk(sk); - if (len != sizeof(struct sctp_assoc_value)) + if (len < sizeof(struct sctp_assoc_value)) return - EINVAL; + len = sizeof(struct sctp_assoc_value); + if (copy_from_user(¶ms, optval, len)) return -EFAULT; @@ -3876,8 +3909,11 @@ static int sctp_getsockopt_delayed_ack_time(struct sock *sk, int len, */ static int sctp_getsockopt_initmsg(struct sock *sk, int len, char __user *optval, int __user *optlen) { - if (len != sizeof(struct sctp_initmsg)) + if (len < sizeof(struct sctp_initmsg)) return -EINVAL; + len = sizeof(struct sctp_initmsg); + if (put_user(len, optlen)) + return -EFAULT; if (copy_to_user(optval, &sctp_sk(sk)->initmsg, len)) return -EFAULT; return 0; @@ -3892,7 +3928,7 @@ static int sctp_getsockopt_peer_addrs_num_old(struct sock *sk, int len, struct list_head *pos; int cnt = 0; - if (len != sizeof(sctp_assoc_t)) + if (len < sizeof(sctp_assoc_t)) return -EINVAL; if (copy_from_user(&id, optval, sizeof(sctp_assoc_t))) @@ -3928,10 +3964,12 @@ static int sctp_getsockopt_peer_addrs_old(struct sock *sk, int len, struct sctp_sock *sp = sctp_sk(sk); int addrlen; - if (len != sizeof(struct sctp_getaddrs_old)) + if (len < sizeof(struct sctp_getaddrs_old)) return -EINVAL; - if (copy_from_user(&getaddrs, optval, sizeof(struct sctp_getaddrs_old))) + len = sizeof(struct sctp_getaddrs_old); + + if (copy_from_user(&getaddrs, optval, len)) return -EFAULT; if (getaddrs.addr_num <= 0) return -EINVAL; @@ -3954,7 +3992,9 @@ static int sctp_getsockopt_peer_addrs_old(struct sock *sk, int len, if (cnt >= getaddrs.addr_num) break; } getaddrs.addr_num = cnt; - if (copy_to_user(optval, &getaddrs, sizeof(struct sctp_getaddrs_old))) + if (put_user(len, optlen)) + return -EFAULT; + if (copy_to_user(optval, &getaddrs, len)) return -EFAULT; return 0; @@ -3987,8 +4027,7 @@ static int sctp_getsockopt_peer_addrs(struct sock *sk, int len, return -EINVAL; to = optval + offsetof(struct sctp_getaddrs,addrs); - space_left = len - sizeof(struct sctp_getaddrs) - - offsetof(struct sctp_getaddrs,addrs); + space_left = len - offsetof(struct sctp_getaddrs,addrs); list_for_each(pos, &asoc->peer.transport_addr_list) { from = list_entry(pos, struct sctp_transport, transports); @@ -4025,7 +4064,7 @@ static int sctp_getsockopt_local_addrs_num_old(struct sock *sk, int len, rwlock_t *addr_lock; int cnt = 0; - if (len != sizeof(sctp_assoc_t)) + if (len < sizeof(sctp_assoc_t)) return -EINVAL; if (copy_from_user(&id, optval, sizeof(sctp_assoc_t))) @@ -4139,7 +4178,7 @@ static int sctp_copy_laddrs(struct sock *sk, __u16 port, void *to, to += addrlen; cnt ++; space_left -= addrlen; - bytes_copied += addrlen; + *bytes_copied += addrlen; } return cnt; @@ -4167,10 +4206,11 @@ static int sctp_getsockopt_local_addrs_old(struct sock *sk, int len, void *buf; int bytes_copied = 0; - if (len != sizeof(struct sctp_getaddrs_old)) + if (len < sizeof(struct sctp_getaddrs_old)) return -EINVAL; - if (copy_from_user(&getaddrs, optval, sizeof(struct sctp_getaddrs_old))) + len = sizeof(struct sctp_getaddrs_old); + if (copy_from_user(&getaddrs, optval, len)) return -EFAULT; if (getaddrs.addr_num <= 0) return -EINVAL; @@ -4242,7 +4282,7 @@ copy_getaddrs: /* copy the leading structure back to user */ getaddrs.addr_num = cnt; - if (copy_to_user(optval, &getaddrs, sizeof(struct sctp_getaddrs_old))) + if (copy_to_user(optval, &getaddrs, len)) err = -EFAULT; error: @@ -4270,7 +4310,7 @@ static int sctp_getsockopt_local_addrs(struct sock *sk, int len, void *addrs; void *buf; - if (len <= sizeof(struct sctp_getaddrs)) + if (len < sizeof(struct sctp_getaddrs)) return -EINVAL; if (copy_from_user(&getaddrs, optval, sizeof(struct sctp_getaddrs))) @@ -4294,8 +4334,8 @@ static int sctp_getsockopt_local_addrs(struct sock *sk, int len, } to = optval + offsetof(struct sctp_getaddrs,addrs); - space_left = len - sizeof(struct sctp_getaddrs) - - offsetof(struct sctp_getaddrs,addrs); + space_left = len - offsetof(struct sctp_getaddrs,addrs); + addrs = kmalloc(space_left, GFP_KERNEL); if (!addrs) return -ENOMEM; @@ -4343,11 +4383,12 @@ copy_getaddrs: err = -EFAULT; goto error; } - if (put_user(cnt, &((struct sctp_getaddrs __user *)optval)->addr_num)) - return -EFAULT; + if (put_user(cnt, &((struct sctp_getaddrs __user *)optval)->addr_num)) { + err = -EFAULT; + goto error; + } if (put_user(bytes_copied, optlen)) - return -EFAULT; - + err = -EFAULT; error: kfree(addrs); return err; @@ -4366,10 +4407,12 @@ static int sctp_getsockopt_primary_addr(struct sock *sk, int len, struct sctp_association *asoc; struct sctp_sock *sp = sctp_sk(sk); - if (len != sizeof(struct sctp_prim)) + if (len < sizeof(struct sctp_prim)) return -EINVAL; - if (copy_from_user(&prim, optval, sizeof(struct sctp_prim))) + len = sizeof(struct sctp_prim); + + if (copy_from_user(&prim, optval, len)) return -EFAULT; asoc = sctp_id2assoc(sk, prim.ssp_assoc_id); @@ -4385,7 +4428,9 @@ static int sctp_getsockopt_primary_addr(struct sock *sk, int len, sctp_get_pf_specific(sk->sk_family)->addr_v4map(sp, (union sctp_addr *)&prim.ssp_addr); - if (copy_to_user(optval, &prim, sizeof(struct sctp_prim))) + if (put_user(len, optlen)) + return -EFAULT; + if (copy_to_user(optval, &prim, len)) return -EFAULT; return 0; @@ -4402,10 +4447,15 @@ static int sctp_getsockopt_adaptation_layer(struct sock *sk, int len, { struct sctp_setadaptation adaptation; - if (len != sizeof(struct sctp_setadaptation)) + if (len < sizeof(struct sctp_setadaptation)) return -EINVAL; + len = sizeof(struct sctp_setadaptation); + adaptation.ssb_adaptation_ind = sctp_sk(sk)->adaptation_ind; + + if (put_user(len, optlen)) + return -EFAULT; if (copy_to_user(optval, &adaptation, len)) return -EFAULT; @@ -4439,9 +4489,12 @@ static int sctp_getsockopt_default_send_param(struct sock *sk, struct sctp_association *asoc; struct sctp_sock *sp = sctp_sk(sk); - if (len != sizeof(struct sctp_sndrcvinfo)) + if (len < sizeof(struct sctp_sndrcvinfo)) return -EINVAL; - if (copy_from_user(&info, optval, sizeof(struct sctp_sndrcvinfo))) + + len = sizeof(struct sctp_sndrcvinfo); + + if (copy_from_user(&info, optval, len)) return -EFAULT; asoc = sctp_id2assoc(sk, info.sinfo_assoc_id); @@ -4462,7 +4515,9 @@ static int sctp_getsockopt_default_send_param(struct sock *sk, info.sinfo_timetolive = sp->default_timetolive; } - if (copy_to_user(optval, &info, sizeof(struct sctp_sndrcvinfo))) + if (put_user(len, optlen)) + return -EFAULT; + if (copy_to_user(optval, &info, len)) return -EFAULT; return 0; @@ -4513,10 +4568,12 @@ static int sctp_getsockopt_rtoinfo(struct sock *sk, int len, struct sctp_rtoinfo rtoinfo; struct sctp_association *asoc; - if (len != sizeof (struct sctp_rtoinfo)) + if (len < sizeof (struct sctp_rtoinfo)) return -EINVAL; - if (copy_from_user(&rtoinfo, optval, sizeof (struct sctp_rtoinfo))) + len = sizeof(struct sctp_rtoinfo); + + if (copy_from_user(&rtoinfo, optval, len)) return -EFAULT; asoc = sctp_id2assoc(sk, rtoinfo.srto_assoc_id); @@ -4568,11 +4625,12 @@ static int sctp_getsockopt_associnfo(struct sock *sk, int len, struct list_head *pos; int cnt = 0; - if (len != sizeof (struct sctp_assocparams)) + if (len < sizeof (struct sctp_assocparams)) return -EINVAL; - if (copy_from_user(&assocparams, optval, - sizeof (struct sctp_assocparams))) + len = sizeof(struct sctp_assocparams); + + if (copy_from_user(&assocparams, optval, len)) return -EFAULT; asoc = sctp_id2assoc(sk, assocparams.sasoc_assoc_id); @@ -4658,9 +4716,11 @@ static int sctp_getsockopt_context(struct sock *sk, int len, struct sctp_sock *sp; struct sctp_association *asoc; - if (len != sizeof(struct sctp_assoc_value)) + if (len < sizeof(struct sctp_assoc_value)) return -EINVAL; + len = sizeof(struct sctp_assoc_value); + if (copy_from_user(¶ms, optval, len)) return -EFAULT; @@ -6071,8 +6131,11 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk, * queued to the backlog. This prevents a potential race between * backlog processing on the old socket and new-packet processing * on the new socket. + * + * The caller has just allocated newsk so we can guarantee that other + * paths won't try to lock it and then oldsk. */ - sctp_lock_sock(newsk); + lock_sock_nested(newsk, SINGLE_DEPTH_NESTING); sctp_assoc_migrate(assoc, newsk); /* If the association on the newsk is already closed before accept() diff --git a/net/sctp/transport.c b/net/sctp/transport.c index 961df275d5b..5f467c914f8 100644 --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -241,6 +241,45 @@ void sctp_transport_pmtu(struct sctp_transport *transport) transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT; } +/* this is a complete rip-off from __sk_dst_check + * the cookie is always 0 since this is how it's used in the + * pmtu code + */ +static struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t) +{ + struct dst_entry *dst = t->dst; + + if (dst && dst->obsolete && dst->ops->check(dst, 0) == NULL) { + dst_release(t->dst); + t->dst = NULL; + return NULL; + } + + return dst; +} + +void sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu) +{ + struct dst_entry *dst; + + if (unlikely(pmtu < SCTP_DEFAULT_MINSEGMENT)) { + printk(KERN_WARNING "%s: Reported pmtu %d too low, " + "using default minimum of %d\n", + __FUNCTION__, pmtu, + SCTP_DEFAULT_MINSEGMENT); + /* Use default minimum segment size and disable + * pmtu discovery on this transport. + */ + t->pathmtu = SCTP_DEFAULT_MINSEGMENT; + } else { + t->pathmtu = pmtu; + } + + dst = sctp_transport_dst_check(t); + if (dst) + dst->ops->update_pmtu(dst, pmtu); +} + /* Caches the dst entry and source address for a transport's destination * address. */ |