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Date: Wed, 13 Aug 2014 22:20:13 +0300 From: Kevin Wilson <wkevils@...il.com> To: "netdev@...r.kernel.org" <netdev@...r.kernel.org> Cc: Stephen Hemminger <stephen@...workplumber.org>, vyasevic@...hat.com Subject: BRIDGE_FLAGS_MASTER is used instead of BRIDGE_VLAN_INFO_MASTER flag in bridge/vlan.c Hello, The BRIDGE_VLAN_INFO_MASTER flag was added to /include/uapi/linux/if_bridge.h by commit 407af3299ef1ac7e87ce3fb530e32a009d1a9efd, "Add netlink interface to configure vlans on bridge ports". The value of this flag is checked in the kernel only in the br_afspec() method, net/bridge/br_netlink.c. Can someone please explain how and where is the BRIDGE_VLAN_INFO_MASTER flag set in userspace? I cannot find such a case. The natural place for it is bridge/vlan.c ?(of proute2), but it is not set there, and not in any other module of iproute2. see: http://git.kernel.org/cgit/linux/kernel/git/shemminger/iproute2.git/tree/bridge/vlan.c There is another flag named "BRIDGE_FLAGS_MASTER" which is set in bridge/vlan.c of iproute2. Both these flags, BRIDGE_FLAGS_MASTER and BRIDGE_VLAN_INFO_MASTER, appear in include/linux/if_bridge.h in iproute2, and both have the value 1. Could it be a mistake, and in fact when setting BRIDGE_FLAGS_MASTER in bridge/vlan.c of iproute2, the meaning was to set BRIDGE_VLAN_INFO_MASTER (but since both there values are the same, it was not noticed since it caused no problem)? It seems to me that we do not really mean to set a bridge flag (BRIDGE_FLAGS_MASTER) in a vlan module. This mistake is the only explanation I can think of for why BRIDGE_VLAN_INFO_MASTER is not used in bridge/vlan.c of iproute2. If this is the case, I volunteer to send a patch to fix this by setting BRIDGE_VLAN_INFO_MASTER instead of BRIDGE_FLAGS_MASTER in bridge/vlan.c. Regards, Kevin -- 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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