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udp: preserve const qualifier in udp_sk()

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We can change udp_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: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2023-03-17 15:55:30 +00:00 committed by David S. Miller
parent 39a86d059a
commit 94c540fbfc
1 changed files with 1 additions and 4 deletions
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5
include/linux/udp.h
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@ -97,10 +97,7 @@ struct udp_sock {
#define UDP_MAX_SEGMENTS (1 << 6UL)
static inline struct udp_sock *udp_sk(const struct sock *sk)
{
return (struct udp_sock *)sk;
}
#define udp_sk(ptr) container_of_const(ptr, struct udp_sock, inet.sk)
static inline void udp_set_no_check6_tx(struct sock *sk, bool val)
{