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linux/include/net/switchdev.h

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net: introduce generic switch devices support The goal of this is to provide a possibility to support various switch chips. Drivers should implement relevant ndos to do so. Now there is only one ndo defined: - for getting physical switch id is in place. Note that user can use random port netdevice to access the switch. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-28 21:34:17 +08:00
/*
* include/net/switchdev.h - Switch device API
* Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
switchdev: add netlink flags to IPv4 FIB add op Pass in the netlink flags (NLM_F_*) into switchdev driver for IPv4 FIB add op to allow driver to 1) optimize hardware updates, 2) handle ip route prepend and append commands correctly. Suggested-by: Jamal Hadi Salim <jhs@mojatatu.com> Suggested-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-10 04:59:09 +08:00
* Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com>
net: introduce generic switch devices support The goal of this is to provide a possibility to support various switch chips. Drivers should implement relevant ndos to do so. Now there is only one ndo defined: - for getting physical switch id is in place. Note that user can use random port netdevice to access the switch. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-28 21:34:17 +08:00
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef _LINUX_SWITCHDEV_H_
#define _LINUX_SWITCHDEV_H_
#include <linux/netdevice.h>
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 <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-16 06:49:36 +08:00
#include <linux/notifier.h>
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 <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-16 06:49:37 +08:00
enum netdev_switch_notifier_type {
NETDEV_SWITCH_FDB_ADD = 1,
NETDEV_SWITCH_FDB_DEL,
};
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 <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-16 06:49:36 +08:00
struct netdev_switch_notifier_info {
struct net_device *dev;
};
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 <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-16 06:49:37 +08:00
struct netdev_switch_notifier_fdb_info {
struct netdev_switch_notifier_info info; /* must be first */
const unsigned char *addr;
u16 vid;
};
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 <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-16 06:49:36 +08:00
static inline struct net_device *
netdev_switch_notifier_info_to_dev(const struct netdev_switch_notifier_info *info)
{
return info->dev;
}
net: introduce generic switch devices support The goal of this is to provide a possibility to support various switch chips. Drivers should implement relevant ndos to do so. Now there is only one ndo defined: - for getting physical switch id is in place. Note that user can use random port netdevice to access the switch. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-28 21:34:17 +08:00
#ifdef CONFIG_NET_SWITCHDEV
int netdev_switch_parent_id_get(struct net_device *dev,
struct netdev_phys_item_id *psid);
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 <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by: Thomas Graf <tgraf@suug.ch> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-28 21:34:20 +08:00
int netdev_switch_port_stp_update(struct net_device *dev, u8 state);
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 <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-16 06:49:36 +08:00
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);
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 <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-30 14:40:13 +08:00
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);
switchdev: add IPv4 fib ndo ops wrappers Add IPv4 fib ndo wrapper funcs and stub them out for now. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-06 13:21:15 +08:00
int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
switchdev: add netlink flags to IPv4 FIB add op Pass in the netlink flags (NLM_F_*) into switchdev driver for IPv4 FIB add op to allow driver to 1) optimize hardware updates, 2) handle ip route prepend and append commands correctly. Suggested-by: Jamal Hadi Salim <jhs@mojatatu.com> Suggested-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-10 04:59:09 +08:00
u8 tos, u8 type, u32 nlflags, u32 tb_id);
switchdev: add IPv4 fib ndo ops wrappers Add IPv4 fib ndo wrapper funcs and stub them out for now. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-06 13:21:15 +08:00
int netdev_switch_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
u8 tos, u8 type, u32 tb_id);
fib: hook IPv4 fib for hardware offload Call into the switchdev driver any time an IPv4 fib entry is added/modified/deleted from the kernel's FIB. The switchdev driver may or may not install the route to the offload device. In the case where the driver tries to install the route and something goes wrong (device's routing table is full, etc), then all of the offloaded routes will be flushed from the device, route forwarding falls back to the kernel, and no more routes are offloading. We can refine this logic later. For now, use the simplist model of offloading routes up to the point of failure, and then on failure, undo everything and mark IPv4 offloading disabled. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-06 13:21:19 +08:00
void netdev_switch_fib_ipv4_abort(struct fib_info *fi);
switchdev: add IPv4 fib ndo ops wrappers Add IPv4 fib ndo wrapper funcs and stub them out for now. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-06 13:21:15 +08:00
net: introduce generic switch devices support The goal of this is to provide a possibility to support various switch chips. Drivers should implement relevant ndos to do so. Now there is only one ndo defined: - for getting physical switch id is in place. Note that user can use random port netdevice to access the switch. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-28 21:34:17 +08:00
#else
static inline int netdev_switch_parent_id_get(struct net_device *dev,
struct netdev_phys_item_id *psid)
{
return -EOPNOTSUPP;
}
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 <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by: Thomas Graf <tgraf@suug.ch> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-28 21:34:20 +08:00
static inline int netdev_switch_port_stp_update(struct net_device *dev,
u8 state)
{
return -EOPNOTSUPP;
}
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 <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-16 06:49:36 +08:00
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,
switchdev: fix typo in inline function definition Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-18 17:25:56 +08:00
struct netdev_switch_notifier_info *info)
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 <tgraf@suug.ch> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-16 06:49:36 +08:00
{
return NOTIFY_DONE;
}
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 <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-30 14:40:13 +08:00
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;
}
switchdev: add IPv4 fib ndo ops wrappers Add IPv4 fib ndo wrapper funcs and stub them out for now. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-06 13:21:15 +08:00
static inline int netdev_switch_fib_ipv4_add(u32 dst, int dst_len,
struct fib_info *fi,
switchdev: add netlink flags to IPv4 FIB add op Pass in the netlink flags (NLM_F_*) into switchdev driver for IPv4 FIB add op to allow driver to 1) optimize hardware updates, 2) handle ip route prepend and append commands correctly. Suggested-by: Jamal Hadi Salim <jhs@mojatatu.com> Suggested-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-10 04:59:09 +08:00
u8 tos, u8 type,
u32 nlflags, u32 tb_id)
switchdev: add IPv4 fib ndo ops wrappers Add IPv4 fib ndo wrapper funcs and stub them out for now. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-06 13:21:15 +08:00
{
return 0;
}
static inline int netdev_switch_fib_ipv4_del(u32 dst, int dst_len,
struct fib_info *fi,
u8 tos, u8 type, u32 tb_id)
{
return 0;
}
fib: make netdev_switch_fib_ipv4_abort in header file static inline When building without CONFIG_NET_SWITCHDEV, netdev_switch_fib_ipv4_abort is defined in the header file. It must be static inline to avoid build failure at link time. Fixes: 8e05fd7166c6 ("fib: hook IPv4 fib for hardware offload") Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-07 00:44:28 +08:00
static inline void netdev_switch_fib_ipv4_abort(struct fib_info *fi)
fib: hook IPv4 fib for hardware offload Call into the switchdev driver any time an IPv4 fib entry is added/modified/deleted from the kernel's FIB. The switchdev driver may or may not install the route to the offload device. In the case where the driver tries to install the route and something goes wrong (device's routing table is full, etc), then all of the offloaded routes will be flushed from the device, route forwarding falls back to the kernel, and no more routes are offloading. We can refine this logic later. For now, use the simplist model of offloading routes up to the point of failure, and then on failure, undo everything and mark IPv4 offloading disabled. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-06 13:21:19 +08:00
{
}
net: introduce generic switch devices support The goal of this is to provide a possibility to support various switch chips. Drivers should implement relevant ndos to do so. Now there is only one ndo defined: - for getting physical switch id is in place. Note that user can use random port netdevice to access the switch. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Thomas Graf <tgraf@suug.ch> Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-28 21:34:17 +08:00
#endif
#endif /* _LINUX_SWITCHDEV_H_ */