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Commit d74286d2 authored by Joe Stringer's avatar Joe Stringer Committed by Alexei Starovoitov
Browse files

bpf: Improve socket lookup reuseport documentation 



Improve the wording around socket lookup for reuseport sockets, and
ensure that both bpf.h headers are in sync.

Signed-off-by: default avatarJoe Stringer <joe@wand.net.nz>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent f71c6143

include/uapi/linux/bpf.h

+4 −0
Original line number Diff line number Diff line
@@ -2203,6 +2203,8 @@ union bpf_attr { 
 *		**CONFIG_NET** configuration option.

 *	Return

 *		Pointer to *struct bpf_sock*, or NULL in case of failure.

 *		For sockets with reuseport option, the *struct bpf_sock*

 *		result is from reuse->socks[] using the hash of the tuple.

 *

 * struct bpf_sock *bpf_sk_lookup_udp(void *ctx, struct bpf_sock_tuple *tuple, u32 tuple_size, u64 netns, u64 flags)

 *	Description
@@ -2237,6 +2239,8 @@ union bpf_attr { 
 *		**CONFIG_NET** configuration option.

 *	Return

 *		Pointer to *struct bpf_sock*, or NULL in case of failure.

 *		For sockets with reuseport option, the *struct bpf_sock*

 *		result is from reuse->socks[] using the hash of the tuple.

 *

 * int bpf_sk_release(struct bpf_sock *sk)

 *	Description

tools/include/uapi/linux/bpf.h

+4 −4
Original line number Diff line number Diff line
@@ -2203,8 +2203,8 @@ union bpf_attr { 
 *		**CONFIG_NET** configuration option.

 *	Return

 *		Pointer to *struct bpf_sock*, or NULL in case of failure.

 *		For sockets with reuseport option, *struct bpf_sock*

 *		return is from reuse->socks[] using hash of the packet.

 *		For sockets with reuseport option, the *struct bpf_sock*

 *		result is from reuse->socks[] using the hash of the tuple.

 *

 * struct bpf_sock *bpf_sk_lookup_udp(void *ctx, struct bpf_sock_tuple *tuple, u32 tuple_size, u64 netns, u64 flags)

 *	Description
@@ -2239,8 +2239,8 @@ union bpf_attr { 
 *		**CONFIG_NET** configuration option.

 *	Return

 *		Pointer to *struct bpf_sock*, or NULL in case of failure.

 *		For sockets with reuseport option, *struct bpf_sock*

 *		return is from reuse->socks[] using hash of the packet.

 *		For sockets with reuseport option, the *struct bpf_sock*

 *		result is from reuse->socks[] using the hash of the tuple.

 *

 * int bpf_sk_release(struct bpf_sock *sk)

 *	Description