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Date: Thu, 18 Dec 2014 16:51:38 -0500 (EST) From: David Miller <davem@...emloft.net> To: dan@...llins.co.nz Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] Fixed TPACKET V3 to signal poll when block is closed rather than for every packet From: Dan Collins <dan@...llins.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@...llins.co.nz> Your email client has corrupted the patch, turning TAB characters into sequences of SPACE characters. Please turn off all formatting in your email client, read: Documentation/email-clients.txt for help. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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