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Add ability for packet sources to flag a packet's l2 or l3 checksum as valid.

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This lets packet source plugins implement handling of hardware checksum offloading, if available. Setting the flags will skip the internal checksumming for either layer 2 and/or layer 3.
This commit is contained in:
Tim Wojtulewicz 2020-03-06 15:36:35 -07:00
parent da5fca7163
commit c6f7665953
6 changed files with 19 additions and 5 deletions
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2
src/analyzer/protocol/tcp/TCP.cc
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@ -275,7 +275,7 @@ const struct tcphdr* TCP_Analyzer::ExtractTCP_Header(const u_char*& data,
bool TCP_Analyzer::ValidateChecksum(const struct tcphdr* tp,
TCP_Endpoint* endpoint, int len, int caplen)
{
if ( ! ignore_checksums && caplen >= len &&
if ( ! current_pkt->l3_checksummed && ! ignore_checksums && caplen >= len &&
! endpoint->ValidChecksum(tp, len) )
{
Weird("bad_TCP_checksum");