I don't understand this comment. CONFIG_IGB_DISABLE_PACKET_SPLIT was introduced around the start of 2013 and igb started in 2007 sometime.
Can't you just define CONFIG_IGB_PACKET_SPLIT? I don't think this patch is necessary. Also, this is the wrong mailing list - you should be posting kernel patches to intel-wired-...@lists.osuosl.org. Todd Fujinaka Software Application Engineer Networking Division (ND) Intel Corporation todd.fujin...@intel.com (503) 712-4565 -----Original Message----- From: zhuyj [mailto:zyjzyj2...@gmail.com] Sent: Thursday, June 25, 2015 11:30 PM To: e1000-devel@lists.sourceforge.net Subject: [E1000-devel] CONFIG_IGB_DISABLE_PACKET_SPLIT in igb nic driver >From the beginning, CONFIG_IGB_DISABLE_PACKET_SPLIT is introduced in >igb nic driver. But this CONFIG_IGB_DISABLE_PACKET_SPLIT is not defined in linux kernel options. As such, igb nic driver will split packets. So if the patckets are protected by some hash algorithm, such as md5, sha1, after igb nic dirver splits long patckets(>178bytes), these protected packets will be discarded in the receiver. An example is AH packets. If the AH packets are long enough(>178), these AH packets will be splited in igb nic driver. In the end, the receiver will not get correct ICV result. So these long(>178 bytes) will be dicarded. So it is necessary to define CONFIG_IGB_DISABLE_PACKET_SPLIT in some igb driver header files to avoid splitting long packets in igb driver. At least, some explanations should be put in the README file. But there is nothing about CONFIG_IGB_DISABLE_PACKET_SPLIT in the README file. So we should apply this patch (based on igb 5.0.5) in our igb nic driver when it is built for linux kernel. Or some explanations should be put into the README file. Best Regards! Zhu Yanjun ------------------------------------------------------------------------------ Monitor 25 network devices or servers for free with OpManager! OpManager is web-based network management software that monitors network devices and physical & virtual servers, alerts via email & sms for fault. Monitor 25 devices for free with no restriction. Download now http://ad.doubleclick.net/ddm/clk/292181274;119417398;o _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
