On Tue, Apr 02, 2013 at 09:51:12PM +0000, Huang, Xiong wrote: > > The error vanishes as soon as I put a gso size limit of MAX_TX_BUF_LEN in > > the driver. MAX_TX_BUF_LEN seems to be arbitrary set to 0x2000. I can even > > raise it to 0x3000 and don't see any tcp retransmits. Do you have an advice > > on > > how to size this value (e.g. should we switch to the windows values)? > > > > Would you try 0x4000 ? because the buffer-length in TX descriptor is 14bits, > 0x4000 exceeds max value. > Do you find any bug/issue on the code that calculate the length for each TX > descriptor ?
Setting MAX_TX_BUF_LEN to 0x4000 [ 8949.833750] ATL1E 0000:04:00.0 p33p1: NIC Link is Up <100 Mbps Full Duplex> [ 8949.833783] IPv6: ADDRCONF(NETDEV_CHANGE): p33p1: link becomes ready [ 8960.861557] ATL1E 0000:04:00.0 p33p1: PCIE DMA RW error (status = 0x5000400) [ 8960.866879] ATL1E 0000:04:00.0 p33p1: NIC Link is Up <100 Mbps Full Duplex> [ 8961.095266] ATL1E 0000:04:00.0 p33p1: PCIE DMA RW error (status = 0x5000400) [ 8961.100791] ATL1E 0000:04:00.0 p33p1: NIC Link is Up <100 Mbps Full Duplex> I have not looked at the buffer calculations intensly. -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20130402221913.gg4...@order.stressinduktion.org
