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| author |   Pavel Begunkov <asml.silence@gmail.com> | 2022-10-21 11:16:39 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-10-22 08:42:58 -0600 |
| commit | e993ffe3da4bcddea0536b03be1031bf35cd8d85 (patch) | |
| tree | 4a2f29d5750b51820a53e95fd0995dc7cd342463 | |
| parent | io-wq: Fix memory leak in worker creation (diff) | |
| download | linux-dev-e993ffe3da4bcddea0536b03be1031bf35cd8d85.tar.xz linux-dev-e993ffe3da4bcddea0536b03be1031bf35cd8d85.zip | |
net: flag sockets supporting msghdr originated zerocopy
We need an efficient way in io_uring to check whether a socket supports
zerocopy with msghdr provided ubuf_info. Add a new flag into the struct
socket flags fields.
Cc: <stable@vger.kernel.org> # 6.0
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/3dafafab822b1c66308bb58a0ac738b1e3f53f74.1666346426.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | include/linux/net.h | 1 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 1 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/net.h b/include/linux/net.h index 711c3593c3b8..18d942bbdf6e 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -41,6 +41,7 @@ struct net; #define SOCK_NOSPACE 2 #define SOCK_PASSCRED 3 #define SOCK_PASSSEC 4 +#define SOCK_SUPPORT_ZC 5 #ifndef ARCH_HAS_SOCKET_TYPES /** diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index f8232811a5be..ef14efa1fb70 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -457,6 +457,7 @@ void tcp_init_sock(struct sock *sk) WRITE_ONCE(sk->sk_sndbuf, READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_wmem[1])); WRITE_ONCE(sk->sk_rcvbuf, READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_rmem[1])); + set_bit(SOCK_SUPPORT_ZC, &sk->sk_socket->flags); sk_sockets_allocated_inc(sk); } EXPORT_SYMBOL(tcp_init_sock); diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 662d717d5123..1c646797cc79 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1624,6 +1624,7 @@ int udp_init_sock(struct sock *sk) { skb_queue_head_init(&udp_sk(sk)->reader_queue); sk->sk_destruct = udp_destruct_sock; + set_bit(SOCK_SUPPORT_ZC, &sk->sk_socket->flags); return 0; } |