net: xilinx: Reject broadcast and multicast packets in AXI Ethernet MAC

Set the XAE_RAF_BCSTREJ_MASK bit in the Reset and Address Filter (RAF)
register during hardware initialization to make the MAC drop incoming
frames with broadcast destination address. This avoids unnecessary
broadcast traffic processing by the CPU.

Additionally, when IPv6 is not enabled (CONFIG_IPV6), also set the
XAE_RAF_MCSTREJ_MASK bit to reject multicast frames. Multicast
rejection is skipped when IPv6 is configured because IPv6 Neighbor
Discovery and DHCPv6 rely on multicast.

Expose the RAF register (offset 0x0) in struct axi_regs which was
previously hidden in a reserved array.

Signed-off-by: Michal Simek <[email protected]>
Link: https://lore.kernel.org/r/07ad94eb8a3a9d80273a16a7ac8c7caaba607fe2.1774282153.git.michal.simek@amd.com

0 files changed, 0 insertions, 0 deletions