diff options
Diffstat (limited to 'freebsd/sys/netinet/ip_input.c')
| -rw-r--r-- | freebsd/sys/netinet/ip_input.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/freebsd/sys/netinet/ip_input.c b/freebsd/sys/netinet/ip_input.c index a2278616..9061d41b 100644 --- a/freebsd/sys/netinet/ip_input.c +++ b/freebsd/sys/netinet/ip_input.c @@ -552,24 +552,35 @@ tooshort: m_adj(m, ip_len - m->m_pkthdr.len); } - /* Try to forward the packet, but if we fail continue */ + /* + * Try to forward the packet, but if we fail continue. + * ip_tryforward() does inbound and outbound packet firewall + * processing. If firewall has decided that destination becomes + * our local address, it sets M_FASTFWD_OURS flag. In this + * case skip another inbound firewall processing and update + * ip pointer. + */ + if (V_ipforwarding != 0 #ifdef IPSEC - /* For now we do not handle IPSEC in tryforward. */ - if (!key_havesp(IPSEC_DIR_INBOUND) && !key_havesp(IPSEC_DIR_OUTBOUND) && - (V_ipforwarding == 1)) - if (ip_tryforward(m) == NULL) + && !key_havesp(IPSEC_DIR_INBOUND) + && !key_havesp(IPSEC_DIR_OUTBOUND) +#endif + ) { + if ((m = ip_tryforward(m)) == NULL) return; + if (m->m_flags & M_FASTFWD_OURS) { + m->m_flags &= ~M_FASTFWD_OURS; + ip = mtod(m, struct ip *); + goto ours; + } + } +#ifdef IPSEC /* * Bypass packet filtering for packets previously handled by IPsec. */ if (ip_ipsec_filtertunnel(m)) goto passin; -#else - if (V_ipforwarding == 1) - if (ip_tryforward(m) == NULL) - return; -#endif /* IPSEC */ - +#endif /* * Run through list of hooks for input packets. * |