From 38dcf357aed299186ecb090cc2f5290cc17d637d Mon Sep 17 00:00:00 2001 From: Scott Feldman Date: Fri, 28 Nov 2014 14:34:20 +0100 Subject: [PATCH] bridge: call netdev_sw_port_stp_update when bridge port STP status changes To notify switch driver of change in STP state of bridge port, add new .ndo op and provide switchdev wrapper func to call ndo op. Use it in bridge code then. Signed-off-by: Scott Feldman Signed-off-by: Jiri Pirko Signed-off-by: Andy Gospodarek Acked-by: Thomas Graf Acked-by: Florian Fainelli Signed-off-by: David S. Miller --- include/linux/netdevice.h | 5 +++++ include/net/switchdev.h | 7 +++++++ net/bridge/br_stp.c | 7 +++++++ net/switchdev/switchdev.c | 19 +++++++++++++++++++ 4 files changed, 38 insertions(+) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 3603f31e78f3..29c92ee9ed56 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1024,6 +1024,9 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev, * Called to get an ID of the switch chip this port is part of. * If driver implements this, it indicates that it represents a port * of a switch chip. + * int (*ndo_switch_port_stp_update)(struct net_device *dev, u8 state); + * Called to notify switch device port of bridge port STP + * state change. */ struct net_device_ops { int (*ndo_init)(struct net_device *dev); @@ -1180,6 +1183,8 @@ struct net_device_ops { #ifdef CONFIG_NET_SWITCHDEV int (*ndo_switch_parent_id_get)(struct net_device *dev, struct netdev_phys_item_id *psid); + int (*ndo_switch_port_stp_update)(struct net_device *dev, + u8 state); #endif }; diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 7a52360a1446..8a6d1641fd9b 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -16,6 +16,7 @@ int netdev_switch_parent_id_get(struct net_device *dev, struct netdev_phys_item_id *psid); +int netdev_switch_port_stp_update(struct net_device *dev, u8 state); #else @@ -25,6 +26,12 @@ static inline int netdev_switch_parent_id_get(struct net_device *dev, return -EOPNOTSUPP; } +static inline int netdev_switch_port_stp_update(struct net_device *dev, + u8 state) +{ + return -EOPNOTSUPP; +} + #endif #endif /* _LINUX_SWITCHDEV_H_ */ diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c index 2b047bcf42a4..fb3ebe615513 100644 --- a/net/bridge/br_stp.c +++ b/net/bridge/br_stp.c @@ -12,6 +12,7 @@ */ #include #include +#include #include "br_private.h" #include "br_private_stp.h" @@ -38,7 +39,13 @@ void br_log_state(const struct net_bridge_port *p) void br_set_state(struct net_bridge_port *p, unsigned int state) { + int err; + p->state = state; + err = netdev_switch_port_stp_update(p->dev, state); + if (err && err != -EOPNOTSUPP) + br_warn(p->br, "error setting offload STP state on port %u(%s)\n", + (unsigned int) p->port_no, p->dev->name); } /* called under bridge lock */ diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c index 66973deaae56..d162b21b14bd 100644 --- a/net/switchdev/switchdev.c +++ b/net/switchdev/switchdev.c @@ -31,3 +31,22 @@ int netdev_switch_parent_id_get(struct net_device *dev, return ops->ndo_switch_parent_id_get(dev, psid); } EXPORT_SYMBOL(netdev_switch_parent_id_get); + +/** + * netdev_switch_port_stp_update - Notify switch device port of STP + * state change + * @dev: port device + * @state: port STP state + * + * Notify switch device port of bridge port STP state change. + */ +int netdev_switch_port_stp_update(struct net_device *dev, u8 state) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (!ops->ndo_switch_port_stp_update) + return -EOPNOTSUPP; + WARN_ON(!ops->ndo_switch_parent_id_get); + return ops->ndo_switch_port_stp_update(dev, state); +} +EXPORT_SYMBOL(netdev_switch_port_stp_update);