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| author | Willem de Bruijn <willemb@google.com> | 2017-08-03 22:29:39 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-04 06:37:29 +0200 |
| commit | 52267790ef52d7513879238ca9fac22c1733e0e3 (patch) | |
| tree | 3df2cd31743717fbf4335b950cc52328f2f44f14 /arch/frv | |
| parent | sock: skb_copy_ubufs support for compound pages (diff) | |
| download | linux-52267790ef52d7513879238ca9fac22c1733e0e3.tar.xz linux-52267790ef52d7513879238ca9fac22c1733e0e3.zip | |
sock: add MSG_ZEROCOPY
The kernel supports zerocopy sendmsg in virtio and tap. Expand the
infrastructure to support other socket types. Introduce a completion
notification channel over the socket error queue. Notifications are
returned with ee_origin SO_EE_ORIGIN_ZEROCOPY. ee_errno is 0 to avoid
blocking the send/recv path on receiving notifications.
Add reference counting, to support the skb split, merge, resize and
clone operations possible with SOCK_STREAM and other socket types.
The patch does not yet modify any datapaths.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/frv')
0 files changed, 0 insertions, 0 deletions