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| author |   Eric Dumazet <edumazet@google.com> | 2019-03-26 08:34:55 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-03-27 13:59:02 -0700 |
| commit | 4f661542a40217713f2cee0bb6678fbb30d9d367 (patch) | |
| tree | 8c49f8cb2bb8e14e76b8f912ec39659dc06cb4e5 /include/net/failover.h | |
| parent | net: openvswitch: Add a new action check_pkt_len (diff) | |
| download | linux-dev-4f661542a40217713f2cee0bb6678fbb30d9d367.tar.xz linux-dev-4f661542a40217713f2cee0bb6678fbb30d9d367.zip | |
tcp: fix zerocopy and notsent_lowat issues
My recent patch had at least three problems :
1) TX zerocopy wants notification when skb is acknowledged,
thus we need to call skb_zcopy_clear() if the skb is
cached into sk->sk_tx_skb_cache
2) Some applications might expect precise EPOLLOUT
notifications, so we need to update sk->sk_wmem_queued
and call sk_mem_uncharge() from sk_wmem_free_skb()
in all cases. The SOCK_QUEUE_SHRUNK flag must also be set.
3) Reuse of saved skb should have used skb_cloned() instead
of simply checking if the fast clone has been freed.
Fixes: 472c2e07eef0 ("tcp: add one skb cache for tx")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Tested-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions