diff options
| author |   David Ahern <dsahern@kernel.org> | 2022-07-12 21:52:30 +0100 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-07-19 14:20:54 -0700 |
| commit | ebe73a284f4de8c5d401adeccd9b8fe3183b6e95 (patch) | |
| tree | 19911b54eaa143e16d4e2a1af73b6e556f404e99 /include/linux/socket.h | |
| parent | skbuff: carry external ubuf_info in msghdr (diff) | |
| download | wireguard-linux-ebe73a284f4de8c5d401adeccd9b8fe3183b6e95.tar.xz wireguard-linux-ebe73a284f4de8c5d401adeccd9b8fe3183b6e95.zip | |
net: Allow custom iter handler in msghdr
Add support for custom iov_iter handling to msghdr. The idea is that
in-kernel subsystems want control over how an SG is split.
Signed-off-by: David Ahern <dsahern@kernel.org>
[pavel: move callback into msghdr]
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/socket.h')
| -rw-r--r-- | include/linux/socket.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/socket.h b/include/linux/socket.h index 7bac9fc1cee0..3c11ef18a9cf 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -14,6 +14,8 @@ struct file; struct pid; struct cred; struct socket; +struct sock; +struct sk_buff; #define __sockaddr_check_size(size) \ BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage))) @@ -70,6 +72,8 @@ struct msghdr { __kernel_size_t msg_controllen; /* ancillary data buffer length */ struct kiocb *msg_iocb; /* ptr to iocb for async requests */ struct ubuf_info *msg_ubuf; + int (*sg_from_iter)(struct sock *sk, struct sk_buff *skb, + struct iov_iter *from, size_t length); }; struct user_msghdr { |