diff options
Diffstat (limited to 'sys/netinet/sctp_pcb.c')
| -rw-r--r-- | sys/netinet/sctp_pcb.c | 65 |
1 files changed, 55 insertions, 10 deletions
diff --git a/sys/netinet/sctp_pcb.c b/sys/netinet/sctp_pcb.c index bfffa439da87..860867a79d60 100644 --- a/sys/netinet/sctp_pcb.c +++ b/sys/netinet/sctp_pcb.c @@ -2577,6 +2577,7 @@ sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id) /* number of streams to pre-open on a association */ m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default); + m->default_mtu = 0; /* Add adaptation cookie */ m->adaptation_layer_indicator = 0; m->adaptation_layer_indicator_provided = 0; @@ -3942,7 +3943,28 @@ sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr, net, 0, stcb->asoc.vrf_id); - if (net->ro._s_addr != NULL) { + if (stcb->asoc.default_mtu > 0) { + net->mtu = stcb->asoc.default_mtu; + switch (net->ro._l_addr.sa.sa_family) { +#ifdef INET + case AF_INET: + net->mtu += SCTP_MIN_V4_OVERHEAD; + break; +#endif +#ifdef INET6 + case AF_INET6: + net->mtu += SCTP_MIN_OVERHEAD; + break; +#endif + default: + break; + } +#if defined(INET) || defined(INET6) + if (net->port) { + net->mtu += (uint32_t)sizeof(struct udphdr); + } +#endif + } else if (net->ro._s_addr != NULL) { uint32_t imtu, rmtu, hcmtu; net->src_addr_selected = 1; @@ -3966,19 +3988,42 @@ sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr, } } if (net->mtu == 0) { - switch (newaddr->sa_family) { + if (stcb->asoc.default_mtu > 0) { + net->mtu = stcb->asoc.default_mtu; + switch (net->ro._l_addr.sa.sa_family) { #ifdef INET - case AF_INET: - net->mtu = SCTP_DEFAULT_MTU; - break; + case AF_INET: + net->mtu += SCTP_MIN_V4_OVERHEAD; + break; #endif #ifdef INET6 - case AF_INET6: - net->mtu = 1280; - break; + case AF_INET6: + net->mtu += SCTP_MIN_OVERHEAD; + break; #endif - default: - break; + default: + break; + } +#if defined(INET) || defined(INET6) + if (net->port) { + net->mtu += (uint32_t)sizeof(struct udphdr); + } +#endif + } else { + switch (newaddr->sa_family) { +#ifdef INET + case AF_INET: + net->mtu = SCTP_DEFAULT_MTU; + break; +#endif +#ifdef INET6 + case AF_INET6: + net->mtu = 1280; + break; +#endif + default: + break; + } } } #if defined(INET) || defined(INET6) |