diff options
| author |   Matus Fabian <matfabia@cisco.com> | 2017-06-09 02:33:30 -0700 |
|---|---|---|
| committer |   Ole Trøan <otroan@employees.org> | 2017-06-13 08:19:10 +0000 |
| commit | 4b30ceb1b4f9174d528525059d7fd52d585f059d (patch) | |
| tree | 1bc96c94b566acf5d9d60054c49f7cc03b6b4ce1 /src | |
| parent | 3b20ee4e2b66c287d7a67aff1a304b45be55a4a8 (diff) | |
SNAT: fix 1:1 NAT without port hairpinning TCP checksum update
Change-Id: I5077fcf3671a6116b475f87e43120efc10ecaa08
Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/plugins/snat/in2out.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/plugins/snat/in2out.c b/src/plugins/snat/in2out.c index ddde702a..685cdca8 100644 --- a/src/plugins/snat/in2out.c +++ b/src/plugins/snat/in2out.c @@ -854,6 +854,16 @@ snat_hairpinning (snat_main_t *sm, udp0->checksum = 0; } } + else + { + if (PREDICT_TRUE(proto0 == SNAT_PROTOCOL_TCP)) + { + sum0 = tcp0->checksum; + sum0 = ip_csum_update (sum0, old_dst_addr0, new_dst_addr0, + ip4_header_t, dst_address); + tcp0->checksum = ip_csum_fold(sum0); + } + } } } |