ice: add profile conflict check for AVF FDIR

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[ Upstream commit 29486b6df3 ]

Add profile conflict check while adding some FDIR rules to avoid
unexpected flow behavior, rules may have conflict including:
        IPv4 <---> {IPv4_UDP, IPv4_TCP, IPv4_SCTP}
        IPv6 <---> {IPv6_UDP, IPv6_TCP, IPv6_SCTP}

For example, when we create an FDIR rule for IPv4, this rule will work
on packets including IPv4, IPv4_UDP, IPv4_TCP and IPv4_SCTP. But if we
then create an FDIR rule for IPv4_UDP and then destroy it, the first
FDIR rule for IPv4 cannot work on pkt IPv4_UDP then.

To prevent this unexpected behavior, we add restriction in software
when creating FDIR rules by adding necessary profile conflict check.

Fixes: 1f7ea1cd6a ("ice: Enable FDIR Configure for AVF")
Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Junfeng Guo 2023-03-14 10:03:15 +08:00 • committed by Greg Kroah-Hartman

parent 0885738841

commit d10900058f

1 changed files with 73 additions and 0 deletions

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drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c

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