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bpf: skmsg, replace comments with BUILD bug

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Enforce comment on structure layout dependency with a BUILD_BUG_ON
to ensure the condition is maintained.

Suggested-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
John Fastabend 2018-12-20 11:35:31 -08:00 • committed by Daniel Borkmann
parent bc1b4f013b
commit 7a69c0f250
2 changed files with 4 additions and 3 deletions
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4
include/linux/skmsg.h
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@ -36,9 +36,7 @@ struct sk_msg_sg {
struct scatterlist data[MAX_MSG_FRAGS + 1];
};
/* UAPI in filter.c depends on struct sk_msg_sg being first element. If
* this is moved filter.c also must be updated.
*/
/* UAPI in filter.c depends on struct sk_msg_sg being first element. */
struct sk_msg {
struct sk_msg_sg sg;
void *data;