Tanner Love 9c661b0b85
net/packet: make packet_fanout.arr size configurable up to 64K ...
One use case of PACKET_FANOUT is lockless reception with one socket
per CPU. 256 is a practical limit on increasingly many machines.
Increase PACKET_FANOUT_MAX to 64K. Expand setsockopt PACKET_FANOUT to
take an extra argument max_num_members. Also explicitly define a
fanout_args struct, instead of implicitly casting to an integer. This
documents the API and simplifies the control flow.
If max_num_members is not specified or is set to 0, then 256 is used,
same as before.
Signed-off-by: Tanner Love <tannerlove@google.com >
Signed-off-by: Willem de Bruijn <willemb@google.com >
Reviewed-by: Eric Dumazet <edumazet@google.com >
Signed-off-by: Jakub Kicinski <kuba@kernel.org >
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