idpf: account for VLAN header when parsing RSC packet header

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While parsing the header of a Receive Side Coalesced (RSC) packet, check
if a VLAN tag is present and adjust the header parsing accordingly.
Otherwise, Rx TCP traffic is completely broken for any VLAN interface
whose underlying interface has RSC (rx-gro-hw) enabled.

We only need to worry about one VLAN header since Rx packets with
multiple VLAN headers are not candidates for RSC.

Fixes: 3a8845af66 ("idpf: add RX splitq napi poll support")
Signed-off-by: Joshua Hay <joshua.a.hay@intel.com>
Reviewed-by: Emil Tantilov <emil.s.tantilov@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Samuel Salin <Samuel.salin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

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Joshua Hay 2026-07-27 16:08:48 -07:00 • committed by Tony Nguyen

parent 650f197d8e

commit cc6d60ef92

1 changed files with 7 additions and 3 deletions

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drivers/net/ethernet/intel/idpf/idpf_txrx.c

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