From 68e331c785b85b78f4155e2ab6f90e976b609dc1 Mon Sep 17 00:00:00 2001 From: Roopa Prabhu Date: Thu, 29 Jan 2015 22:40:14 -0800 Subject: [PATCH] bridge: offload bridge port attributes to switch asic if feature flag set This patch adds support to set/del bridge port attributes in hardware from the bridge driver. With this, when the user sends a bridge setlink message with no flags or master flags set, - the bridge driver ndo_bridge_setlink handler sets settings in the kernel - calls the swicthdev api to propagate the attrs to the switchdev hardware You can still use the self flag to go to the switch hw or switch port driver directly. With this, it also makes sure a notification goes out only after the attributes are set both in the kernel and hw. The patch calls switchdev api only if BRIDGE_FLAGS_SELF is not set. This is because the offload cases with BRIDGE_FLAGS_SELF are handled in the caller (in rtnetlink.c). Signed-off-by: Roopa Prabhu Signed-off-by: David S. Miller --- net/bridge/br_netlink.c | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 088e80203845..b93f42c515da 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include "br_private.h" @@ -500,7 +501,7 @@ int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) struct nlattr *afspec; struct net_bridge_port *p; struct nlattr *tb[IFLA_BRPORT_MAX + 1]; - int err = 0; + int err = 0, ret_offload = 0; protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); @@ -542,9 +543,18 @@ int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) afspec, RTM_SETLINK); } + if (!(flags & BRIDGE_FLAGS_SELF)) { + /* set bridge attributes in hardware if supported + */ + ret_offload = netdev_switch_port_bridge_setlink(dev, nlh, + flags); + if (ret_offload && ret_offload != -EOPNOTSUPP) + br_warn(p->br, "error setting attrs on port %u(%s)\n", + (unsigned int)p->port_no, p->dev->name); + } + if (err == 0) br_ifinfo_notify(RTM_NEWLINK, p); - out: return err; } @@ -554,7 +564,7 @@ int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) { struct nlattr *afspec; struct net_bridge_port *p; - int err; + int err = 0, ret_offload = 0; afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); if (!afspec) @@ -573,6 +583,16 @@ int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) */ br_ifinfo_notify(RTM_NEWLINK, p); + if (!(flags & BRIDGE_FLAGS_SELF)) { + /* del bridge attributes in hardware + */ + ret_offload = netdev_switch_port_bridge_dellink(dev, nlh, + flags); + if (ret_offload && ret_offload != -EOPNOTSUPP) + br_warn(p->br, "error deleting attrs on port %u (%s)\n", + (unsigned int)p->port_no, p->dev->name); + } + return err; } static int br_validate(struct nlattr *tb[], struct nlattr *data[]) -- 2.20.1