Messages in this thread | | | Date | Thu, 18 Dec 2014 16:51:38 -0500 (EST) | Subject | Re: [PATCH] Fixed TPACKET V3 to signal poll when block is closed rather than for every packet | From | David Miller <> |
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From: Dan Collins <dan@dcollins.co.nz> Date: Fri, 19 Dec 2014 10:49:16 +1300
> 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>
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