I'm enabling e1000 to offload IPv6 since the 2.6.18+ kernels support it. The kernel I'm testing is 2.6.18-rc4.
Everything with the hardware offload is working fine, but it appears that the GSO code may not correctly segment frames sometimes for IPv6 traffic. I did a tcpdump on both ends with all hardware offloading disabled through ethtool. Here is what I got, note the long frame and then the retransmit. Has this problem been addressed already? I'll compile and test a couple newer kernels, any suggested target patches or kernels would be appreciated. Sender: ======= 15:56:28.769034 bk1-6.33541 > lh2-6.12865: S 3200244805:3200244805(0) win 5760 <mss 1440,sackOK,timestamp 64767859 0,nop,wscale 7> 15:56:28.769042 lh2-6.12865 > bk1-6.33541: S 1558653050:1558653050(0) ack 3200244806 win 5712 <mss 1440,sackOK,timestamp 172654320 64767859,nop,wscale 7> 15:56:28.769102 bk1-6.33541 > lh2-6.12865: . ack 1 win 45 <nop,nop,timestamp 64767859 172654320> 15:56:28.769350 bk1-6.33541 > lh2-6.12865: P 1:257(256) ack 1 win 45 <nop,nop,timestamp 64767859 172654320> 15:56:28.769381 lh2-6.12865 > bk1-6.33541: . ack 257 win 53 <nop,nop,timestamp 172654320 64767859> 15:56:28.769731 lh2-6.12865 > bk1-6.33541: P 1:257(256) ack 257 win 53 <nop,nop,timestamp 172654320 64767859> 15:56:28.769851 bk1-6.33541 > lh2-6.12865: . ack 257 win 54 <nop,nop,timestamp 64767860 172654320> 15:56:28.769860 bk1-6.46315 > lh2-6.35704: S 3205139672:3205139672(0) win 5760 <mss 1440,sackOK,timestamp 64767860 0,nop,wscale 7> 15:56:28.769873 lh2-6.35704 > bk1-6.46315: S 1557432368:1557432368(0) ack 3205139673 win 5712 <mss 1440,sackOK,timestamp 172654320 64767860,nop,wscale 7> 15:56:28.769975 bk1-6.46315 > lh2-6.35704: . ack 1 win 45 <nop,nop,timestamp 64767860 172654320> 15:56:28.770009 lh2-6.35704 > bk1-6.46315: . 1:2857(2856) ack 1 win 45 <nop,nop,timestamp 172654320 64767860> 15:56:28.972354 lh2-6.35704 > bk1-6.46315: . 1:1429(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767860> 15:56:28.972478 bk1-6.46315 > lh2-6.35704: . ack 1429 win 68 <nop,nop,timestamp 64767910 172654371> 15:56:28.972493 lh2-6.35704 > bk1-6.46315: . 1429:2857(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.972602 bk1-6.46315 > lh2-6.35704: . ack 2857 win 90 <nop,nop,timestamp 64767910 172654371> 15:56:28.972611 lh2-6.35704 > bk1-6.46315: . 2857:4285(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.972727 bk1-6.46315 > lh2-6.35704: . ack 4285 win 112 <nop,nop,timestamp 64767910 172654371> 15:56:28.972735 lh2-6.35704 > bk1-6.46315: . 4285:5713(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.972742 lh2-6.35704 > bk1-6.46315: . 5713:7141(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.972853 bk1-6.46315 > lh2-6.35704: . ack 5713 win 135 <nop,nop,timestamp 64767910 172654371> 15:56:28.972862 lh2-6.35704 > bk1-6.46315: . 7141:8569(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.972868 lh2-6.35704 > bk1-6.46315: . 8569:9997(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> Receiver: ========= 15:56:28.764058 bk1-6.33541 > lh2-6.12865: S 3200244805:3200244805(0) win 5760 <mss 1440,sackOK,timestamp 64767859 0,nop,wscale 7> 15:56:28.764181 lh2-6.12865 > bk1-6.33541: S 1558653050:1558653050(0) ack 3200244806 win 5712 <mss 1440,sackOK,timestamp 172654320 64767859,nop,wscale 7> 15:56:28.764205 bk1-6.33541 > lh2-6.12865: . ack 1 win 45 <nop,nop,timestamp 64767859 172654320> 15:56:28.764441 bk1-6.33541 > lh2-6.12865: P 1:257(256) ack 1 win 45 <nop,nop,timestamp 64767859 172654320> 15:56:28.764552 lh2-6.12865 > bk1-6.33541: . ack 257 win 53 <nop,nop,timestamp 172654320 64767859> 15:56:28.764926 lh2-6.12865 > bk1-6.33541: P 1:257(256) ack 257 win 53 <nop,nop,timestamp 172654320 64767859> 15:56:28.764936 bk1-6.33541 > lh2-6.12865: . ack 257 win 54 <nop,nop,timestamp 64767860 172654320> 15:56:28.764962 bk1-6.46315 > lh2-6.35704: S 3205139672:3205139672(0) win 5760 <mss 1440,sackOK,timestamp 64767860 0,nop,wscale 7> 15:56:28.765052 lh2-6.35704 > bk1-6.46315: S 1557432368:1557432368(0) ack 3205139673 win 5712 <mss 1440,sackOK,timestamp 172654320 64767860,nop,wscale 7> 15:56:28.765061 bk1-6.46315 > lh2-6.35704: . ack 1 win 45 <nop,nop,timestamp 64767860 172654320> 15:56:28.765300 lh2-6.35704 > bk1-6.46315: . 1:1429(1428) ack 1 win 45 <nop,nop,timestamp 172654320 64767860> 15:56:28.765306 lh2-6.35704 > bk1-6.46315: . 1429:2857(1428) ack 1 win 45 <nop,nop,timestamp 172654320 64767860> 15:56:28.967565 lh2-6.35704 > bk1-6.46315: . 1:1429(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767860> 15:56:28.967581 bk1-6.46315 > lh2-6.35704: . ack 1429 win 68 <nop,nop,timestamp 64767910 172654371> 15:56:28.967691 lh2-6.35704 > bk1-6.46315: . 1429:2857(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.967702 bk1-6.46315 > lh2-6.35704: . ack 2857 win 90 <nop,nop,timestamp 64767910 172654371> 15:56:28.967816 lh2-6.35704 > bk1-6.46315: . 2857:4285(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.967826 bk1-6.46315 > lh2-6.35704: . ack 4285 win 112 <nop,nop,timestamp 64767910 172654371> 15:56:28.967941 lh2-6.35704 > bk1-6.46315: . 4285:5713(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.967946 lh2-6.35704 > bk1-6.46315: . 5713:7141(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.967951 bk1-6.46315 > lh2-6.35704: . ack 5713 win 135 <nop,nop,timestamp 64767910 172654371> 15:56:28.967956 bk1-6.46315 > lh2-6.35704: . ack 7141 win 157 <nop,nop,timestamp 64767910 172654371> 15:56:28.968066 lh2-6.35704 > bk1-6.46315: . 7141:8569(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.968071 lh2-6.35704 > bk1-6.46315: . 8569:9997(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> 15:56:28.968073 lh2-6.35704 > bk1-6.46315: P 9997:11425(1428) ack 1 win 45 <nop,nop,timestamp 172654371 64767910> - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
