Commit 68ac9a8b authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

af_packet: preserve const qualifier in pkt_sk() 



We can change pkt_sk() to propagate const qualifier of its argument,
thanks to container_of_const()

This should avoid some potential errors caused by accidental
(const -> not_const) promotion.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Reviewed-by: default avatarSimon Horman <simon.horman@corigine.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 94c540fb

net/packet/internal.h

+1 −4
Original line number Diff line number Diff line
@@ -133,10 +133,7 @@ struct packet_sock { 
	atomic_t		tp_drops ____cacheline_aligned_in_smp;

};



static inline struct packet_sock *pkt_sk(struct sock *sk)

{

	return (struct packet_sock *)sk;

}

#define pkt_sk(ptr) container_of_const(ptr, struct packet_sock, sk)



enum packet_sock_flags {

	PACKET_SOCK_ORIGDEV,