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authorNathan Skrzypczak <nathan.skrzypczak@gmail.com>2021-02-25 19:13:19 +0100
committerNathan Skrzypczak <nathan.skrzypczak@gmail.com>2023-08-07 11:34:48 +0200
commitb22da9c7d101dca833a5c4183e7cf13943f16715 (patch)
tree80c21ea31740ee9dd3ec48f94368067e05656b90 /src/plugins/cnat/cnat_node_feature.c
parent994a58997dec4a1a34efd8e43440b56d100d44af (diff)
cnat: Support offloaded check sums
This patch removes zero checks for new_addr, new_port meaning sessions with zero values will rewrite the packet with a 0 value instead of leaving it in place. This allows to reduce branchiness in the code, and sessions are fully resolved at creation time anyway. This also adds support for checksum offloads: - IP checksum offload : we always compute the checksum to avoid issues with drivers. We'll revert this if we realize cost gets too important. - TCP/UDP checksum offload : we add the implementation for pseudo header checksum computation. This is needed for the drivers that do not re-compute this pseudo-checksum before the packet is TX-ed (e.g. a few DPDK drivers). Type: improvement Change-Id: I6543f3aec8c120ec50f4219108609138283620ef Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Diffstat (limited to 'src/plugins/cnat/cnat_node_feature.c')
-rw-r--r--src/plugins/cnat/cnat_node_feature.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/plugins/cnat/cnat_node_feature.c b/src/plugins/cnat/cnat_node_feature.c
index 76aa893983d..2ab5cb232b4 100644
--- a/src/plugins/cnat/cnat_node_feature.c
+++ b/src/plugins/cnat/cnat_node_feature.c
@@ -156,9 +156,9 @@ cnat_input_feature_fn (vlib_main_t *vm, vlib_node_runtime_t *node,
}
if (AF_IP4 == ctx->af)
- cnat_translation_ip4 (session, ip4, udp0);
+ cnat_translation_ip4 (session, ip4, udp0, vnet_buffer (b)->oflags);
else
- cnat_translation_ip6 (session, ip6, udp0);
+ cnat_translation_ip6 (session, ip6, udp0, vnet_buffer (b)->oflags);
if (NULL != ct)
{
@@ -326,9 +326,9 @@ cnat_output_feature_fn (vlib_main_t *vm, vlib_node_runtime_t *node,
}
if (AF_IP4 == ctx->af)
- cnat_translation_ip4 (session, ip4, udp0);
+ cnat_translation_ip4 (session, ip4, udp0, vnet_buffer (b)->oflags);
else
- cnat_translation_ip6 (session, ip6, udp0);
+ cnat_translation_ip6 (session, ip6, udp0, vnet_buffer (b)->oflags);
trace:
if (PREDICT_FALSE (ctx->do_trace))