From 03bf0c281234028388108d0aee720954f5fe6924 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 15 Jan 2015 23:49:36 +0100 Subject: switchdev: introduce switchdev notifier This patch introduces new notifier for purposes of exposing events which happen on switch driver side. The consumers of the event messages are mainly involved masters, namely bridge and ovs. Suggested-by: Thomas Graf Signed-off-by: Jiri Pirko Signed-off-by: Scott Feldman Signed-off-by: David S. Miller --- include/net/switchdev.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'include/net/switchdev.h') diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 8a6d1641fd9..7f8d74372d8 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -11,12 +11,27 @@ #define _LINUX_SWITCHDEV_H_ #include +#include + +struct netdev_switch_notifier_info { + struct net_device *dev; +}; + +static inline struct net_device * +netdev_switch_notifier_info_to_dev(const struct netdev_switch_notifier_info *info) +{ + return info->dev; +} #ifdef CONFIG_NET_SWITCHDEV 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); +int register_netdev_switch_notifier(struct notifier_block *nb); +int unregister_netdev_switch_notifier(struct notifier_block *nb); +int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev, + struct netdev_switch_notifier_info *info); #else @@ -32,6 +47,22 @@ static inline int netdev_switch_port_stp_update(struct net_device *dev, return -EOPNOTSUPP; } +static inline int register_netdev_switch_notifier(struct notifier_block *nb) +{ + return 0; +} + +static inline int unregister_netdev_switch_notifier(struct notifier_block *nb) +{ + return 0; +} + +static inline int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev, + struct netdev_switch_notifier_info *info); +{ + return NOTIFY_DONE; +} + #endif #endif /* _LINUX_SWITCHDEV_H_ */ -- cgit v1.2.3-70-g09d2 From 3aeb66176ffa8fefd7a9f7d37bda1d8adcf469a1 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 15 Jan 2015 23:49:37 +0100 Subject: net: replace br_fdb_external_learn_* calls with switchdev notifier events This patch benefits from newly introduced switchdev notifier and uses it to propagate fdb learn events from rocker driver to bridge. That avoids direct function calls and possible use by other listeners (ovs). Suggested-by: Thomas Graf Signed-off-by: Jiri Pirko Signed-off-by: Scott Feldman Signed-off-by: David S. Miller --- drivers/net/ethernet/rocker/rocker.c | 10 +++++-- include/linux/if_bridge.h | 18 ------------- include/net/switchdev.h | 11 ++++++++ net/bridge/br.c | 52 +++++++++++++++++++++++++++++++++++- net/bridge/br_fdb.c | 38 +++----------------------- net/bridge/br_private.h | 4 +++ 6 files changed, 78 insertions(+), 55 deletions(-) (limited to 'include/net/switchdev.h') diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c index cad8cf962cd..964d719b150 100644 --- a/drivers/net/ethernet/rocker/rocker.c +++ b/drivers/net/ethernet/rocker/rocker.c @@ -3026,11 +3026,17 @@ static void rocker_port_fdb_learn_work(struct work_struct *work) container_of(work, struct rocker_fdb_learn_work, work); bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE); bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED); + struct netdev_switch_notifier_fdb_info info; + + info.addr = lw->addr; + info.vid = lw->vid; if (learned && removing) - br_fdb_external_learn_del(lw->dev, lw->addr, lw->vid); + call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL, + lw->dev, &info.info); else if (learned && !removing) - br_fdb_external_learn_add(lw->dev, lw->addr, lw->vid); + call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD, + lw->dev, &info.info); kfree(work); } diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h index 0a8ce762a47..a57bca2ea97 100644 --- a/include/linux/if_bridge.h +++ b/include/linux/if_bridge.h @@ -50,24 +50,6 @@ extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __use typedef int br_should_route_hook_t(struct sk_buff *skb); extern br_should_route_hook_t __rcu *br_should_route_hook; -#if IS_ENABLED(CONFIG_BRIDGE) -int br_fdb_external_learn_add(struct net_device *dev, - const unsigned char *addr, u16 vid); -int br_fdb_external_learn_del(struct net_device *dev, - const unsigned char *addr, u16 vid); -#else -static inline int br_fdb_external_learn_add(struct net_device *dev, - const unsigned char *addr, u16 vid) -{ - return 0; -} -static inline int br_fdb_external_learn_del(struct net_device *dev, - const unsigned char *addr, u16 vid) -{ - return 0; -} -#endif - #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) int br_multicast_list_adjacent(struct net_device *dev, struct list_head *br_ip_list); diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 7f8d74372d8..201120e18e4 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -13,10 +13,21 @@ #include #include +enum netdev_switch_notifier_type { + NETDEV_SWITCH_FDB_ADD = 1, + NETDEV_SWITCH_FDB_DEL, +}; + struct netdev_switch_notifier_info { struct net_device *dev; }; +struct netdev_switch_notifier_fdb_info { + struct netdev_switch_notifier_info info; /* must be first */ + const unsigned char *addr; + u16 vid; +}; + static inline struct net_device * netdev_switch_notifier_info_to_dev(const struct netdev_switch_notifier_info *info) { diff --git a/net/bridge/br.c b/net/bridge/br.c index 44425aff7cb..fb57ab6b24f 100644 --- a/net/bridge/br.c +++ b/net/bridge/br.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "br_private.h" @@ -120,6 +121,48 @@ static struct notifier_block br_device_notifier = { .notifier_call = br_device_event }; +static int br_netdev_switch_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = netdev_switch_notifier_info_to_dev(ptr); + struct net_bridge_port *p; + struct net_bridge *br; + struct netdev_switch_notifier_fdb_info *fdb_info; + int err = NOTIFY_DONE; + + rtnl_lock(); + p = br_port_get_rtnl(dev); + if (!p) + goto out; + + br = p->br; + + switch (event) { + case NETDEV_SWITCH_FDB_ADD: + fdb_info = ptr; + err = br_fdb_external_learn_add(br, p, fdb_info->addr, + fdb_info->vid); + if (err) + err = notifier_from_errno(err); + break; + case NETDEV_SWITCH_FDB_DEL: + fdb_info = ptr; + err = br_fdb_external_learn_del(br, p, fdb_info->addr, + fdb_info->vid); + if (err) + err = notifier_from_errno(err); + break; + } + +out: + rtnl_unlock(); + return err; +} + +static struct notifier_block br_netdev_switch_notifier = { + .notifier_call = br_netdev_switch_event, +}; + static void __net_exit br_net_exit(struct net *net) { struct net_device *dev; @@ -169,10 +212,14 @@ static int __init br_init(void) if (err) goto err_out3; - err = br_netlink_init(); + err = register_netdev_switch_notifier(&br_netdev_switch_notifier); if (err) goto err_out4; + err = br_netlink_init(); + if (err) + goto err_out5; + brioctl_set(br_ioctl_deviceless_stub); #if IS_ENABLED(CONFIG_ATM_LANE) @@ -185,6 +232,8 @@ static int __init br_init(void) return 0; +err_out5: + unregister_netdev_switch_notifier(&br_netdev_switch_notifier); err_out4: unregister_netdevice_notifier(&br_device_notifier); err_out3: @@ -202,6 +251,7 @@ static void __exit br_deinit(void) { stp_proto_unregister(&br_stp_proto); br_netlink_fini(); + unregister_netdev_switch_notifier(&br_netdev_switch_notifier); unregister_netdevice_notifier(&br_device_notifier); brioctl_set(NULL); unregister_pernet_subsys(&br_net_ops); diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index e6e0372bc3c..03667e65cc2 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -990,26 +990,14 @@ void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p) } } -int br_fdb_external_learn_add(struct net_device *dev, +int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, const unsigned char *addr, u16 vid) { - struct net_bridge_port *p; - struct net_bridge *br; struct hlist_head *head; struct net_bridge_fdb_entry *fdb; int err = 0; - rtnl_lock(); - - p = br_port_get_rtnl(dev); - if (!p) { - pr_info("bridge: %s not a bridge port\n", dev->name); - err = -EINVAL; - goto err_rtnl_unlock; - } - - br = p->br; - + ASSERT_RTNL(); spin_lock_bh(&br->hash_lock); head = &br->hash[br_mac_hash(addr, vid)]; @@ -1034,33 +1022,18 @@ int br_fdb_external_learn_add(struct net_device *dev, err_unlock: spin_unlock_bh(&br->hash_lock); -err_rtnl_unlock: - rtnl_unlock(); return err; } -EXPORT_SYMBOL(br_fdb_external_learn_add); -int br_fdb_external_learn_del(struct net_device *dev, +int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, const unsigned char *addr, u16 vid) { - struct net_bridge_port *p; - struct net_bridge *br; struct hlist_head *head; struct net_bridge_fdb_entry *fdb; int err = 0; - rtnl_lock(); - - p = br_port_get_rtnl(dev); - if (!p) { - pr_info("bridge: %s not a bridge port\n", dev->name); - err = -EINVAL; - goto err_rtnl_unlock; - } - - br = p->br; - + ASSERT_RTNL(); spin_lock_bh(&br->hash_lock); head = &br->hash[br_mac_hash(addr, vid)]; @@ -1071,9 +1044,6 @@ int br_fdb_external_learn_del(struct net_device *dev, err = -ENOENT; spin_unlock_bh(&br->hash_lock); -err_rtnl_unlock: - rtnl_unlock(); return err; } -EXPORT_SYMBOL(br_fdb_external_learn_del); diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index d808d766334..e8e3f368168 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -402,6 +402,10 @@ int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, struct net_device *dev, struct net_device *fdev, int idx); int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); +int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, + const unsigned char *addr, u16 vid); +int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, + const unsigned char *addr, u16 vid); /* br_forward.c */ void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb); -- cgit v1.2.3-70-g09d2 From 27c00132852b77b12e625cd6a0ccf43d6bf5795f Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sun, 18 Jan 2015 10:25:56 +0100 Subject: switchdev: fix typo in inline function definition Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/net/switchdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/net/switchdev.h') diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 201120e18e4..205e63698da 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -69,7 +69,7 @@ static inline int unregister_netdev_switch_notifier(struct notifier_block *nb) } static inline int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev, - struct netdev_switch_notifier_info *info); + struct netdev_switch_notifier_info *info) { return NOTIFY_DONE; } -- cgit v1.2.3-70-g09d2 From 8a44dbb202617aa66968ba74fdabf1b654dfe661 Mon Sep 17 00:00:00 2001 From: Roopa Prabhu Date: Thu, 29 Jan 2015 22:40:13 -0800 Subject: swdevice: add new apis to set and del bridge port attributes This patch adds two new api's netdev_switch_port_bridge_setlink and netdev_switch_port_bridge_dellink to offload bridge port attributes to switch port (The names of the apis look odd with 'switch_port_bridge', but am more inclined to change the prefix of the api to something else. Will take any suggestions). The api's look at the NETIF_F_HW_SWITCH_OFFLOAD feature flag to pass bridge port attributes to the port device. Signed-off-by: Roopa Prabhu Signed-off-by: David S. Miller --- include/net/switchdev.h | 37 +++++++++++++++- net/switchdev/switchdev.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 146 insertions(+), 1 deletion(-) (limited to 'include/net/switchdev.h') diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 205e63698da..cfcdac2e5d2 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -43,7 +43,14 @@ int register_netdev_switch_notifier(struct notifier_block *nb); int unregister_netdev_switch_notifier(struct notifier_block *nb); int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev, struct netdev_switch_notifier_info *info); - +int netdev_switch_port_bridge_setlink(struct net_device *dev, + struct nlmsghdr *nlh, u16 flags); +int netdev_switch_port_bridge_dellink(struct net_device *dev, + struct nlmsghdr *nlh, u16 flags); +int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev, + struct nlmsghdr *nlh, u16 flags); +int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev, + struct nlmsghdr *nlh, u16 flags); #else static inline int netdev_switch_parent_id_get(struct net_device *dev, @@ -74,6 +81,34 @@ static inline int call_netdev_switch_notifiers(unsigned long val, struct net_dev return NOTIFY_DONE; } +static inline int netdev_switch_port_bridge_setlink(struct net_device *dev, + struct nlmsghdr *nlh, + u16 flags) +{ + return -EOPNOTSUPP; +} + +static inline int netdev_switch_port_bridge_dellink(struct net_device *dev, + struct nlmsghdr *nlh, + u16 flags) +{ + return -EOPNOTSUPP; +} + +static inline int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev, + struct nlmsghdr *nlh, + u16 flags) +{ + return 0; +} + +static inline int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev, + struct nlmsghdr *nlh, + u16 flags) +{ + return 0; +} + #endif #endif /* _LINUX_SWITCHDEV_H_ */ diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c index 22e02f4edd9..8c1e558db11 100644 --- a/net/switchdev/switchdev.c +++ b/net/switchdev/switchdev.c @@ -115,3 +115,113 @@ int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev, return err; } EXPORT_SYMBOL(call_netdev_switch_notifiers); + +/** + * netdev_switch_port_bridge_setlink - Notify switch device port of bridge + * port attributes + * + * @dev: port device + * @nlh: netlink msg with bridge port attributes + * @flags: bridge setlink flags + * + * Notify switch device port of bridge port attributes + */ +int netdev_switch_port_bridge_setlink(struct net_device *dev, + struct nlmsghdr *nlh, u16 flags) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) + return 0; + + if (!ops->ndo_bridge_setlink) + return -EOPNOTSUPP; + + return ops->ndo_bridge_setlink(dev, nlh, flags); +} +EXPORT_SYMBOL(netdev_switch_port_bridge_setlink); + +/** + * netdev_switch_port_bridge_dellink - Notify switch device port of bridge + * port attribute delete + * + * @dev: port device + * @nlh: netlink msg with bridge port attributes + * @flags: bridge setlink flags + * + * Notify switch device port of bridge port attribute delete + */ +int netdev_switch_port_bridge_dellink(struct net_device *dev, + struct nlmsghdr *nlh, u16 flags) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) + return 0; + + if (!ops->ndo_bridge_dellink) + return -EOPNOTSUPP; + + return ops->ndo_bridge_dellink(dev, nlh, flags); +} +EXPORT_SYMBOL(netdev_switch_port_bridge_dellink); + +/** + * ndo_dflt_netdev_switch_port_bridge_setlink - default ndo bridge setlink + * op for master devices + * + * @dev: port device + * @nlh: netlink msg with bridge port attributes + * @flags: bridge setlink flags + * + * Notify master device slaves of bridge port attributes + */ +int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev, + struct nlmsghdr *nlh, u16 flags) +{ + struct net_device *lower_dev; + struct list_head *iter; + int ret = 0, err = 0; + + if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) + return ret; + + netdev_for_each_lower_dev(dev, lower_dev, iter) { + err = netdev_switch_port_bridge_setlink(lower_dev, nlh, flags); + if (err && err != -EOPNOTSUPP) + ret = err; + } + + return ret; +} +EXPORT_SYMBOL(ndo_dflt_netdev_switch_port_bridge_setlink); + +/** + * ndo_dflt_netdev_switch_port_bridge_dellink - default ndo bridge dellink + * op for master devices + * + * @dev: port device + * @nlh: netlink msg with bridge port attributes + * @flags: bridge dellink flags + * + * Notify master device slaves of bridge port attribute deletes + */ +int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev, + struct nlmsghdr *nlh, u16 flags) +{ + struct net_device *lower_dev; + struct list_head *iter; + int ret = 0, err = 0; + + if (!(dev->features & NETIF_F_HW_SWITCH_OFFLOAD)) + return ret; + + netdev_for_each_lower_dev(dev, lower_dev, iter) { + err = netdev_switch_port_bridge_dellink(lower_dev, nlh, flags); + if (err && err != -EOPNOTSUPP) + ret = err; + } + + return ret; +} +EXPORT_SYMBOL(ndo_dflt_netdev_switch_port_bridge_dellink); -- cgit v1.2.3-70-g09d2