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Date: Fri, 22 Nov 2013 23:00:50 +0800 From: Yanfei Wang <backyes@...il.com> To: netdev <netdev@...r.kernel.org>, China Kernel <kernel@...r.linux-kernel.cn>, linux-kernel@...r.kernel.org Subject: [Doubt on Implict BUGs caused LRO] doubt about lro status in v3.12 of torvalds/linux.git Hi, Compared to the earlier kernel version, I found that Large receive offload(LRO) is obsolete in latest kernel, and that is verified from other materials about Generic receive offload(GRO). However, I also found some LRO header files and lro-related functions referred by some drivers, and the lro-related function definition is already removed at the same time! TEST steps: 1. my git local db config as follow, url = http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2. git checkout v3.12 -b 3.12 3. cd net/ipv4, [backyes@f14 ipv4]$ cat Makefile | grep lro obj-$(CONFIG_INET_LRO) += inet_lro.o [backyes@f14 ipv4]$ ls inet_* inet_connection_sock.c inet_diag.c inet_fragment.c inet_hashtables.c inet_timewait_sock.c [backyes@f14 ipv4]$ Here, Makefile has inet_lro.o config, while the inet_lro.c is removed. 4. lro functions referred by some drivers, as follow, [backyes@f14 linux]$ grep "inet_lro" * -r drivers/net/ethernet/pasemi/pasemi_mac.c:#include <linux/inet_lro.h> drivers/net/ethernet/pasemi/pasemi_mac_ethtool.c:#include <linux/inet_lro.h> drivers/infiniband/hw/nes/nes_hw.c:#include <linux/inet_lro.h> drivers/infiniband/hw/nes/nes_hw.h:#include <linux/inet_lro.h> include/linux/inet_lro.h: * linux/include/linux/inet_lro.h net/ipv4/Makefile:obj-$(CONFIG_INET_LRO) += inet_lro.o so, I understand that the removal of LRO is not clean, which will cause compiler error for some kernel config. -- Best Regard! Yanfei Wang -- 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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