diff options
| author |   Paolo Abeni <pabeni@redhat.com> | 2020-09-14 10:01:11 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-09-14 13:28:02 -0700 |
| commit | 8268ed4c9d197fc6448b6262c62aad62ef9aa4d5 (patch) | |
| tree | 8c5bc5af37cd05292ddc3b91b734687192ca18bb /net/mptcp | |
| parent | mptcp: basic sndbuf autotuning (diff) | |
| download | linux-dev-8268ed4c9d197fc6448b6262c62aad62ef9aa4d5.tar.xz linux-dev-8268ed4c9d197fc6448b6262c62aad62ef9aa4d5.zip | |
mptcp: introduce and use mptcp_try_coalesce()
Factor-out existing code, will be re-used by the
next patch.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/protocol.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 4f12a8ce0ddd..5a2ff333e426 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -110,6 +110,22 @@ static int __mptcp_socket_create(struct mptcp_sock *msk) return 0; } +static bool mptcp_try_coalesce(struct sock *sk, struct sk_buff *to, + struct sk_buff *from) +{ + bool fragstolen; + int delta; + + if (MPTCP_SKB_CB(from)->offset || + !skb_try_coalesce(to, from, &fragstolen, &delta)) + return false; + + kfree_skb_partial(from, fragstolen); + atomic_add(delta, &sk->sk_rmem_alloc); + sk_mem_charge(sk, delta); + return true; +} + static void __mptcp_move_skb(struct mptcp_sock *msk, struct sock *ssk, struct sk_buff *skb, unsigned int offset, size_t copy_len) @@ -121,24 +137,15 @@ static void __mptcp_move_skb(struct mptcp_sock *msk, struct sock *ssk, skb_ext_reset(skb); skb_orphan(skb); + MPTCP_SKB_CB(skb)->offset = offset; msk->ack_seq += copy_len; tail = skb_peek_tail(&sk->sk_receive_queue); - if (offset == 0 && tail) { - bool fragstolen; - int delta; - - if (skb_try_coalesce(tail, skb, &fragstolen, &delta)) { - kfree_skb_partial(skb, fragstolen); - atomic_add(delta, &sk->sk_rmem_alloc); - sk_mem_charge(sk, delta); - return; - } - } + if (tail && mptcp_try_coalesce(sk, tail, skb)) + return; skb_set_owner_r(skb, sk); __skb_queue_tail(&sk->sk_receive_queue, skb); - MPTCP_SKB_CB(skb)->offset = offset; } static void mptcp_stop_timer(struct sock *sk) |