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mptcp: leverage skb deferral free

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Usage of the skb deferral API is straight-forward; with multiple
subflows actives this allow moving part of the received application
load into multiple CPUs.

Also fix a typo in the related comment.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Tested-by: Geliang Tang <geliang@kernel.org>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250927-net-next-mptcp-rcv-path-imp-v1-1-5da266aa9c1a@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Paolo Abeni
2025-09-27 11:40:37 +02:00
committed by Jakub Kicinski
parent f017c1f768
commit 9aa59323f2
1 changed files with 3 additions and 2 deletions
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5
net/mptcp/protocol.c
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@@ -1943,12 +1943,13 @@ static int __mptcp_recvmsg_mskq(struct sock *sk,
}
if (!(flags & MSG_PEEK)) {
/* avoid the indirect call, we know the destructor is sock_wfree */
/* avoid the indirect call, we know the destructor is sock_rfree */
skb->destructor = NULL;
skb->sk = NULL;
atomic_sub(skb->truesize, &sk->sk_rmem_alloc);
sk_mem_uncharge(sk, skb->truesize);
__skb_unlink(skb, &sk->sk_receive_queue);
__kfree_skb(skb);
skb_attempt_defer_free(skb);
msk->bytes_consumed += count;
}