diff options
Diffstat (limited to 'sys/netinet/ip_output.c')
| -rw-r--r-- | sys/netinet/ip_output.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c index a37201ed237f..c1dd6bad6c6d 100644 --- a/sys/netinet/ip_output.c +++ b/sys/netinet/ip_output.c @@ -767,9 +767,13 @@ sendit: /* * If small enough for interface, or the interface will take * care of the fragmentation for us, we can just send directly. + * Note that if_vxlan could have requested TSO even though the outer + * frame is UDP. It is correct to not fragment such datagrams and + * instead just pass them on to the driver. */ if (ip_len <= mtu || - (m->m_pkthdr.csum_flags & ifp->if_hwassist & CSUM_TSO) != 0) { + (m->m_pkthdr.csum_flags & ifp->if_hwassist & + (CSUM_TSO | CSUM_INNER_TSO)) != 0) { ip->ip_sum = 0; if (m->m_pkthdr.csum_flags & CSUM_IP & ~ifp->if_hwassist) { ip->ip_sum = in_cksum(m, hlen); @@ -783,7 +787,8 @@ sendit: * once instead of for every generated packet. */ if (!(flags & IP_FORWARDING) && ia) { - if (m->m_pkthdr.csum_flags & CSUM_TSO) + if (m->m_pkthdr.csum_flags & + (CSUM_TSO | CSUM_INNER_TSO)) counter_u64_add(ia->ia_ifa.ifa_opackets, m->m_pkthdr.len / m->m_pkthdr.tso_segsz); else @@ -807,7 +812,8 @@ sendit: } /* Balk when DF bit is set or the interface didn't support TSO. */ - if ((ip_off & IP_DF) || (m->m_pkthdr.csum_flags & CSUM_TSO)) { + if ((ip_off & IP_DF) || + (m->m_pkthdr.csum_flags & (CSUM_TSO | CSUM_INNER_TSO))) { error = EMSGSIZE; IPSTAT_INC(ips_cantfrag); goto bad; |