mptcp: use mptcp_get_ext helper

Use mptcp_get_ext() helper defined in protocol.h instead of open-coding
it in mptcp_sendmsg_frag().

Reviewed-by: Matthieu Baerts <matttbe@kernel.org>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <martineau@kernel.org>
Link: https://lore.kernel.org/r/20231025-send-net-next-20231025-v1-6-db8f25f798eb@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index a29116eda30a5aabda5a2fa4d6c90a33cad1d6c9..a0b8356cd8c58f2d2ea46e385804b4525cf7950a 100644 (file)
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1267,7 +1267,7 @@ static int mptcp_sendmsg_frag(struct sock *sk, struct sock *ssk,
                 * queue management operation, to avoid breaking the ext <->
                 * SSN association set here
                 */
-               mpext = skb_ext_find(skb, SKB_EXT_MPTCP);
+               mpext = mptcp_get_ext(skb);
                if (!mptcp_skb_can_collapse_to(data_seq, skb, mpext)) {
                        TCP_SKB_CB(skb)->eor = 1;
                        goto alloc_skb;
@@ -1289,7 +1289,7 @@ alloc_skb:
 
                i = skb_shinfo(skb)->nr_frags;
                reuse_skb = false;
-               mpext = skb_ext_find(skb, SKB_EXT_MPTCP);
+               mpext = mptcp_get_ext(skb);
        }
 
        /* Zero window and all data acked? Probe. */