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| author |   Rainer Weikusat <rweikusat@mobileactivedefense.com> | 2015-12-06 21:11:34 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-12-06 23:31:54 -0500 |
| commit | ea3793ee29d3621faf857fa8ef5425e9ff9a756d (patch) | |
| tree | b10d2b97a880215baf803b25c86bd318db3b4627 /samples | |
| parent | PHY: DP83867: Remove looking in parent device for OF properties (diff) | |
| download | linux-dev-ea3793ee29d3621faf857fa8ef5425e9ff9a756d.tar.xz linux-dev-ea3793ee29d3621faf857fa8ef5425e9ff9a756d.zip | |
core: enable more fine-grained datagram reception control
The __skb_recv_datagram routine in core/ datagram.c provides a general
skb reception factility supposed to be utilized by protocol modules
providing datagram sockets. It encompasses both the actual recvmsg code
and a surrounding 'sleep until data is available' loop. This is
inconvenient if a protocol module has to use additional locking in order
to maintain some per-socket state the generic datagram socket code is
unaware of (as the af_unix code does). The patch below moves the recvmsg
proper code into a new __skb_try_recv_datagram routine which doesn't
sleep and renames wait_for_more_packets to
__skb_wait_for_more_packets, both routines being exported interfaces. The
original __skb_recv_datagram routine is reimplemented on top of these
two functions such that its user-visible behaviour remains unchanged.
Signed-off-by: Rainer Weikusat <rweikusat@mobileactivedefense.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples')
0 files changed, 0 insertions, 0 deletions