linux/net/packet
Dan Collins da413eec72 packet: Fixed TPACKET V3 to signal poll when block is closed rather than every packet
Make TPACKET_V3 signal poll when block is closed rather than for every
packet. Side effect is that poll will be signaled when block retire
timer expires which didn't previously happen. Issue was visible when
sending packets at a very low frequency such that all blocks are retired
before packets are received by TPACKET_V3. This caused avoidable packet
loss. The fix ensures that the signal is sent when blocks are closed
which covers the normal path where the block is filled as well as the
path where the timer expires. The case where a block is filled without
moving to the next block (ie. all blocks are full) will still cause poll
to be signaled.

Signed-off-by: Dan Collins <dan@dcollins.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-22 15:41:15 -05:00
..
af_packet.c packet: Fixed TPACKET V3 to signal poll when block is closed rather than every packet 2014-12-22 15:41:15 -05:00
diag.c net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
internal.h packet: handle too big packets for PACKET_V3 2014-08-21 16:44:28 -07:00
Kconfig packet: Diag core and basic socket info dumping 2012-08-14 16:56:33 -07:00
Makefile packet: Diag core and basic socket info dumping 2012-08-14 16:56:33 -07:00