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skbuff: carry external ubuf_info in msghdr

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Make possible for network in-kernel callers like io_uring to pass in a
custom ubuf_info by setting it in a new field of struct msghdr.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Pavel Begunkov
2022-07-12 21:52:29 +01:00
committed by Jakub Kicinski
parent 2e07a521e1
commit 7c701d92b2
3 changed files with 4 additions and 0 deletions
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include/linux/socket.h
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@@ -69,6 +69,7 @@ struct msghdr {
unsigned int msg_flags; /* flags on received message */
__kernel_size_t msg_controllen; /* ancillary data buffer length */
struct kiocb *msg_iocb; /* ptr to iocb for async requests */
struct ubuf_info *msg_ubuf;
};
struct user_msghdr {