lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 3 Oct 2013 15:27:51 +0100 From: jason.morgan@...illant.com To: netdev@...r.kernel.org Subject: tx checksum offload in rtl8168evl disabled in driver Hi, I'm try to get close to saturating a 1G ethernet. I'm at 517Mbps and I've found that there seems to be a cpu bottleneck. I'm using 2k to 4k frames with a rtl8168evl. I notice from ethtool that tx-checksum is turned off and refuse to turn on. I've found this message http://www.spinics.net/lists/netdev/msg216530.html Which indicates the cause being the driver. I've looked at the driver code rtl8169.c in kernel 3.8 and the line [RTL_GIGA_MAC_VER_34] = _R("RTL8168evl/8111evl",RTL_TD_1, FIRMWARE_8168E_3, JUMBO_9K, false), indicates the reason for this. However the message thread, above indicates that this is not a problem and can be changed to make tx-checksum offload possible. However we are using a newer chip to the on in the message thread. I've tried to find other, more recent citations without success. So, why is it still turned off? What will be the effect of turning it on (changing false to true, in the driver line) for our chip? Thanks in advance, Jason -- 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
Powered by blists - more mailing lists