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mptcp: move snd_una update earlier for fallback socket 

That will avoid an unneeded conditional in both the fast-path
and in the fallback case and will simplify a bit the next
patch.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Paolo Abeni 2023-06-20 18:30:14 +02:00 committed by Jakub Kicinski
parent 5dfbbaa208
commit c026d33b8f
2 changed files with 6 additions and 6 deletions
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6
net/mptcp/options.c
View File

@ -1119,6 +1119,12 @@ bool mptcp_incoming_options(struct sock *sk, struct sk_buff *skb)
mptcp_data_lock(subflow->conn);
if (sk_stream_memory_free(sk))
__mptcp_check_push(subflow->conn, sk);
/* on fallback we just need to ignore the msk-level snd_una, as
* this is really plain TCP
*/
msk->snd_una = READ_ONCE(msk->snd_nxt);
__mptcp_data_acked(subflow->conn);
mptcp_data_unlock(subflow->conn);
return true;

6
net/mptcp/protocol.c
View File

@ -1004,12 +1004,6 @@ static void __mptcp_clean_una(struct sock *sk)
struct mptcp_data_frag *dtmp, *dfrag;
u64 snd_una;
/* on fallback we just need to ignore snd_una, as this is really
* plain TCP
*/
if (__mptcp_check_fallback(msk))
msk->snd_una = READ_ONCE(msk->snd_nxt);
snd_una = msk->snd_una;
list_for_each_entry_safe(dfrag, dtmp, &msk->rtx_queue, list) {
if (after64(dfrag->data_seq + dfrag->data_len, snd_una))