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authorErin MacNeil <lnx.erin@gmail.com>2022-04-27 16:02:37 -0400
committerJakub Kicinski <kuba@kernel.org>2022-04-28 13:08:15 -0700
commit6fd1d51cfa253b5ee7dae18d7cf1df830e9b6137 (patch)
treea31571fbe97aecf0397022180c5f481f5a70636b /net/socket.c
parent0e55546b189fc5f1ce5149445d7df083f26d4f25 (diff)
net: SO_RCVMARK socket option for SO_MARK with recvmsg()
Adding a new socket option, SO_RCVMARK, to indicate that SO_MARK should be included in the ancillary data returned by recvmsg(). Renamed the sock_recv_ts_and_drops() function to sock_recv_cmsgs(). Signed-off-by: Erin MacNeil <lnx.erin@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20220427200259.2564-1-lnx.erin@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/net/socket.c b/net/socket.c
index 6887840682bb..f0c39c874665 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -930,13 +930,22 @@ static inline void sock_recv_drops(struct msghdr *msg, struct sock *sk,
sizeof(__u32), &SOCK_SKB_CB(skb)->dropcount);
}
-void __sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
- struct sk_buff *skb)
+static void sock_recv_mark(struct msghdr *msg, struct sock *sk,
+ struct sk_buff *skb)
+{
+ if (sock_flag(sk, SOCK_RCVMARK) && skb)
+ put_cmsg(msg, SOL_SOCKET, SO_MARK, sizeof(__u32),
+ &skb->mark);
+}
+
+void __sock_recv_cmsgs(struct msghdr *msg, struct sock *sk,
+ struct sk_buff *skb)
{
sock_recv_timestamp(msg, sk, skb);
sock_recv_drops(msg, sk, skb);
+ sock_recv_mark(msg, sk, skb);
}
-EXPORT_SYMBOL_GPL(__sock_recv_ts_and_drops);
+EXPORT_SYMBOL_GPL(__sock_recv_cmsgs);
INDIRECT_CALLABLE_DECLARE(int inet_recvmsg(struct socket *, struct msghdr *,
size_t, int));