net: tls, update curr on splice as well

The curr pointer must also be updated on the splice similar to how
we do this for other copy types.

Fixes: d829e9c ("tls: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <[email protected]>
Reported-by: Jann Horn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: jrfastab

net/tls/tls_sw.c

@@ -952,6 +952,8 @@ static int tls_sw_sendmsg_splice(struct sock *sk, struct msghdr *msg,
 		}
 
 		sk_msg_page_add(msg_pl, page, part, off);
+		msg_pl->sg.copybreak = 0;
+		msg_pl->sg.curr = msg_pl->sg.end;
 		sk_mem_charge(sk, part);
 		*copied += part;
 		try_to_copy -= part;