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path: root/src/plugins/cnat/cnat_node_snat.c
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2023-08-08cnat: flag to disable rsessionNathan Skrzypczak1-2/+3
This adds a flag on the translation asking the VIP & input-feature nodes not to create the return session when translating / load-balancing an incoming flow. This is needed with maglev & DSR Type: feature Change-Id: I699012310ddc59f6ceeeb4878638eac6da5128dc Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2023-08-07cnat: Support offloaded check sumsNathan Skrzypczak1-3/+2
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>
2021-03-04cnat: Prepare extended snat policiesNathan Skrzypczak1-13/+12
Type: refactor Change-Id: I9ca3333274d6f32b6aff57f0fb3d2049c066337a Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2021-03-04cnat: Fix snat with dhcpNathan Skrzypczak1-6/+7
Type: fix We didn't check that the srcEndpoint was resolved when creating the session, we could end up sNATing with 0.0.0.0 as src_addr Change-Id: If8dfa577e659cfe90b148657a44c0390a7d383e9 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2021-02-26cnat: fixes & prepare maglevNathan Skrzypczak1-69/+31
Notable changes: - ip[46]-cnat-snat is renamed to cnat-snat-ip[46] - indent fixes - common trace primitives - bihash is now 40_56 with alias Type: refactor Change-Id: I0a82cfe3b40efd96473e51061d7135ffe412ddfc Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2020-11-05cnat: reduce compile timeNathan Skrzypczak1-11/+11
Compile time reduced from ~30s to 2s for cnat_node_vip.c & cnat_node_snat.c This doesn't impact performance for now as ts update rwlock is the main bottleneck. Type: improvement Change-Id: Ic92df300ae0dfddc5235c350bd021e73e7c850d9 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2020-09-25cnat: Add DHCP supportNathan Skrzypczak1-2/+2
Type: feature Change-Id: I4bd50fd672ac35cf14ebda2b0b10ec0b9a208628 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2020-09-25cnat: Introduce parametric source policyNathan Skrzypczak1-4/+10
Type: feature Change-Id: I60ae9dd1c100b587d1902a20596b99a5c8a95df7 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2020-09-25cnat: Add support for SNat ICMPNathan Skrzypczak1-9/+18
Type: feature snat supports : * echo request/reply by allocating an identifier when translating echo requests * icmp errors in the same manner as dnat Change-Id: I684e983b0181f95c5eace5a984d40084e5625fa4 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2020-09-25cnat: Ip ICMP error supportNathan Skrzypczak1-1/+2
Type: feature Add CNAT translation for ICMP 4 & 6 errors inner packet will be translated according to existing sessions. Change-Id: If118751988f44ef96b800878596296d1ab8ab6f8 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2020-08-31cnat: Destination based NATNeale Ranns1-0/+237
Type: feature Signed-off-by: Neale Ranns <nranns@cisco.com> Change-Id: I64a99a4fbc674212944247793fd5c1fb701408cb