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The flag EFX_FILTER_MATCH_LOC_MAC_IG to represent filtering on the individual/group bit of the MAC address (with the two cases being distingusished by the MAC address in the filter specification) was introduced to mirror the Linux driver filtering code, but the implementations are different enough anyway that it isn't of much value. Having separate flags for unknown unicast and multicast simplifies the code and allows the set of flags to match those used by MCDI. It will also makes it easier to report whether these filters are supported. In the MCDI definitions, the unknown multicast and unicast flags have the values 0x40000000 and 0x80000000 respectively, and so using the same values for simplicity requires 32 bits in the filter specification to store the flags. This means the structure is now a little bigger than 64 bytes, but filters are not often used on critical paths so this shouldn't have much impact - on Linux they are also bigger than they used to be. Submitted by: Mark Spender <mspender at solarflare.com> Reviewed by: gnn Sponsored by: Solarflare Communications, Inc. MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D8951
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