The branch main has been updated by tuexen: URL: https://cgit.FreeBSD.org/src/commit/?id=eb79855920ffa33d6c096221eac9cc9a6d7a484b
commit eb79855920ffa33d6c096221eac9cc9a6d7a484b Author: Michael Tuexen <[email protected]> AuthorDate: 2021-04-30 10:27:47 +0000 Commit: Michael Tuexen <[email protected]> CommitDate: 2021-04-30 10:31:09 +0000 sctp: fix SCTP_PEER_ADDR_PARAMS socket option Ignore spp_pathmtu if it is 0, when setting the IPPROTO_SCTP level socket option SCTP_PEER_ADDR_PARAMS as required by RFC 6458. MFC after: 1 week --- sys/netinet/sctp_usrreq.c | 72 ++++++++++++++++++++++++++--------------------- 1 file changed, 40 insertions(+), 32 deletions(-) diff --git a/sys/netinet/sctp_usrreq.c b/sys/netinet/sctp_usrreq.c index 049368c91b56..49cc6f22cc5a 100644 --- a/sys/netinet/sctp_usrreq.c +++ b/sys/netinet/sctp_usrreq.c @@ -5327,6 +5327,7 @@ sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, return (EINVAL); } if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && + (paddrp->spp_pathmtu > 0) && ((paddrp->spp_pathmtu < SCTP_SMALLEST_PMTU) || (paddrp->spp_pathmtu > SCTP_LARGEST_PMTU))) { if (stcb) @@ -5371,23 +5372,25 @@ sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11); } net->dest_state |= SCTP_ADDR_NO_PMTUD; - net->mtu = paddrp->spp_pathmtu; - switch (net->ro._l_addr.sa.sa_family) { + if (paddrp->spp_pathmtu > 0) { + net->mtu = paddrp->spp_pathmtu; + switch (net->ro._l_addr.sa.sa_family) { #ifdef INET - case AF_INET: - net->mtu += SCTP_MIN_V4_OVERHEAD; - break; + case AF_INET: + net->mtu += SCTP_MIN_V4_OVERHEAD; + break; #endif #ifdef INET6 - case AF_INET6: - net->mtu += SCTP_MIN_OVERHEAD; - break; + case AF_INET6: + net->mtu += SCTP_MIN_OVERHEAD; + break; #endif - default: - break; - } - if (net->mtu < stcb->asoc.smallest_mtu) { - sctp_pathmtu_adjustment(stcb, net->mtu); + default: + break; + } + if (net->mtu < stcb->asoc.smallest_mtu) { + sctp_pathmtu_adjustment(stcb, net->mtu); + } } } if (paddrp->spp_flags & SPP_PMTUD_ENABLE) { @@ -5396,7 +5399,7 @@ sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, } net->dest_state &= ~SCTP_ADDR_NO_PMTUD; } - if (paddrp->spp_pathmaxrxt) { + if (paddrp->spp_pathmaxrxt > 0) { if (net->dest_state & SCTP_ADDR_PF) { if (net->error_count > paddrp->spp_pathmaxrxt) { net->dest_state &= ~SCTP_ADDR_PF; @@ -5439,7 +5442,7 @@ sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, #endif } else { /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/ - if (paddrp->spp_pathmaxrxt != 0) { + if (paddrp->spp_pathmaxrxt > 0) { stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (net->dest_state & SCTP_ADDR_PF) { @@ -5471,7 +5474,6 @@ sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, net->failure_threshold = paddrp->spp_pathmaxrxt; } } - if (paddrp->spp_flags & SPP_HB_ENABLE) { if (paddrp->spp_hbinterval != 0) { stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval; @@ -5514,26 +5516,30 @@ sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_16); } net->dest_state |= SCTP_ADDR_NO_PMTUD; - net->mtu = paddrp->spp_pathmtu; - switch (net->ro._l_addr.sa.sa_family) { + if (paddrp->spp_pathmtu > 0) { + net->mtu = paddrp->spp_pathmtu; + switch (net->ro._l_addr.sa.sa_family) { #ifdef INET - case AF_INET: - net->mtu += SCTP_MIN_V4_OVERHEAD; - break; + case AF_INET: + net->mtu += SCTP_MIN_V4_OVERHEAD; + break; #endif #ifdef INET6 - case AF_INET6: - net->mtu += SCTP_MIN_OVERHEAD; - break; + case AF_INET6: + net->mtu += SCTP_MIN_OVERHEAD; + break; #endif - default: - break; - } - if (net->mtu < stcb->asoc.smallest_mtu) { - sctp_pathmtu_adjustment(stcb, net->mtu); + default: + break; + } + if (net->mtu < stcb->asoc.smallest_mtu) { + sctp_pathmtu_adjustment(stcb, net->mtu); + } } } - stcb->asoc.default_mtu = paddrp->spp_pathmtu; + if (paddrp->spp_pathmtu > 0) { + stcb->asoc.default_mtu = paddrp->spp_pathmtu; + } sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD); } if (paddrp->spp_flags & SPP_PMTUD_ENABLE) { @@ -5580,7 +5586,7 @@ sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, * set it with the options on the * socket */ - if (paddrp->spp_pathmaxrxt != 0) { + if (paddrp->spp_pathmaxrxt > 0) { inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt; } @@ -5606,7 +5612,9 @@ sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, inp->sctp_ep.default_mtu = 0; sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_NOT_PMTUD); } else if (paddrp->spp_flags & SPP_PMTUD_DISABLE) { - inp->sctp_ep.default_mtu = paddrp->spp_pathmtu; + if (paddrp->spp_pathmtu > 0) { + inp->sctp_ep.default_mtu = paddrp->spp_pathmtu; + } sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_NOT_PMTUD); } if (paddrp->spp_flags & SPP_DSCP) { _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "[email protected]"
