net: lan966x: Add function lan966x_mac_ip_learn()

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Extend mac functionality with the function lan966x_mac_ip_learn. This
function adds an entry in the MAC table for IP multicast addresses.
These entries can copy a frame to the CPU but also can forward on the
front ports.
This functionality is needed for mdb support. In case the CPU and some
of the front ports subscribe to an IP multicast address.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Horatiu Vultur 2022-01-04 16:33:36 +01:00 • committed by David S. Miller

parent 2a5ab39beb

commit fc0c3fe748

3 changed files with 42 additions and 5 deletions

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36

drivers/net/ethernet/microchip/lan966x/lan966x_mac.c

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5

drivers/net/ethernet/microchip/lan966x/lan966x_main.h

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6

drivers/net/ethernet/microchip/lan966x/lan966x_regs.h

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