[PATCH 6.1 055/150] net: Implement missing SO_TIMESTAMPING_NEW cmsg support

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6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Lange <thomas@xxxxxxxxxxxx>

[ Upstream commit 382a32018b74f407008615e0e831d05ed28e81cd ]

Commit 9718475e6908 ("socket: Add SO_TIMESTAMPING_NEW") added the new
socket option SO_TIMESTAMPING_NEW. However, it was never implemented in
__sock_cmsg_send thus breaking SO_TIMESTAMPING cmsg for platforms using
SO_TIMESTAMPING_NEW.

Fixes: 9718475e6908 ("socket: Add SO_TIMESTAMPING_NEW")
Link: https://lore.kernel.org/netdev/6a7281bf-bc4a-4f75-bb88-7011908ae471@xxxxxxxxxxxxxxxx/
Signed-off-by: Thomas Lange <thomas@xxxxxxxxxxxx>
Reviewed-by: Willem de Bruijn <willemb@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240104085744.49164-1-thomas@xxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 net/core/sock.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/core/sock.c b/net/core/sock.c
index 0d8754ec837dc..c50a14a02edd4 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2771,6 +2771,7 @@ int __sock_cmsg_send(struct sock *sk, struct msghdr *msg, struct cmsghdr *cmsg,
 		sockc->mark = *(u32 *)CMSG_DATA(cmsg);
 		break;
 	case SO_TIMESTAMPING_OLD:
+	case SO_TIMESTAMPING_NEW:
 		if (cmsg->cmsg_len != CMSG_LEN(sizeof(u32)))
 			return -EINVAL;
 
-- 
2.43.0







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