From: Roopa Prabhu <roopa@cumulusnetworks•com>
To: Jiri Pirko <jiri@resnulli•us>
Cc: netdev@vger•kernel.org, davem@davemloft•net,
nhorman@tuxdriver•com, andy@greyhouse•net, tgraf@suug•ch,
dborkman@redhat•com, ogerlitz@mellanox•com, jesse@nicira•com,
pshelar@nicira•com, azhou@nicira•com, ben@decadent•org.uk,
stephen@networkplumber•org, jeffrey.t.kirsher@intel•com,
vyasevic@redhat•com, xiyou.wangcong@gmail•com,
john.r.fastabend@intel•com, edumazet@google•com,
jhs@mojatatu•com, sfeldma@gmail•com, f.fainelli@gmail•com,
linville@tuxdriver•com, jasowang@redhat•com,
ebiederm@xmission•com, nicolas.dichtel@6wind•com,
ryazanov.s.a@gmail•com, buytenh@wantstofly•org,
aviadr@mellanox•com, nbd@openwrt•org,
alexei.starovoitov@gmail•com, Neil.Jerram@metaswitch•com,
ronye@mellanox•com, simon.horman@netronome•com,
alexander.h.duyck@redhat•com, john.ronciak@intel•com,
mleitner@redhat•com, shrijeet@gmail•com,
gospo@cumulusnetworks•com, bcrl@kvack•org
Subject: Re: [patch net-next v2 08/10] bridge: add API to notify bridge driver of learned FBD on offloaded device
Date: Tue, 11 Nov 2014 06:21:43 -0800 [thread overview]
Message-ID: <54621B77.4050109@cumulusnetworks.com> (raw)
In-Reply-To: <1415530280-9190-9-git-send-email-jiri@resnulli.us>
On 11/9/14, 2:51 AM, Jiri Pirko wrote:
> From: Scott Feldman <sfeldma@gmail•com>
>
> When the swdev device learns a new mac/vlan on a port, it sends some async
> notification to the driver and the driver installs an FDB in the device.
> To give a holistic system view, the learned mac/vlan should be reflected
> in the bridge's FBD table, so the user, using normal iproute2 cmds, can view
> what is currently learned by the device. This API on the bridge driver gives
> a way for the swdev driver to install an FBD entry in the bridge FBD table.
> (And remove one).
>
> This is equivalent to the device running these cmds:
>
> bridge fdb [add|del] <mac> dev <dev> vid <vlan id> master
>
> This patch needs some extra eyeballs for review, in paricular around the
> locking and contexts.
scott/jiri, love that you have handled this case!, This will be useful.
But, quick question, Cant this also be done using the same ndo_op that
is done to add the static fdb..?
Thanks!.
>
> Signed-off-by: Scott Feldman <sfeldma@gmail•com>
> Signed-off-by: Jiri Pirko <jiri@resnulli•us>
> ---
> include/linux/if_bridge.h | 18 ++++++++++
> net/bridge/br_fdb.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 102 insertions(+)
>
> diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h
> index 808dcb8..27ab217 100644
> --- a/include/linux/if_bridge.h
> +++ b/include/linux/if_bridge.h
> @@ -37,6 +37,24 @@ 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_learn_add(struct net_device *dev,
> + const unsigned char *addr, u16 vid);
> +int br_fdb_learn_del(struct net_device *dev,
> + const unsigned char *addr, u16 vid);
> +#else
> +static inline int br_fdb_learn_add(struct net_device *dev,
> + const unsigned char *addr, u16 vid)
> +{
> + return 0;
> +}
> +static inline int br_fdb_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/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
> index f6f8bb5..e02d21b 100644
> --- a/net/bridge/br_fdb.c
> +++ b/net/bridge/br_fdb.c
> @@ -1022,3 +1022,87 @@ void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p)
> }
> }
> }
> +
> +int br_fdb_learn_add(struct net_device *dev, 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 == NULL) {
> + pr_info("bridge: %s not a bridge port\n", dev->name);
> + err = -EINVAL;
> + goto err_rtnl_unlock;
> + }
> +
> + br = p->br;
> +
> + spin_lock(&br->hash_lock);
> +
> + head = &br->hash[br_mac_hash(addr, vid)];
> + fdb = fdb_find(head, addr, vid);
> + if (fdb == NULL) {
> + fdb = fdb_create(head, p, addr, vid);
> + if (!fdb) {
> + err = -ENOMEM;
> + goto err_unlock;
> + }
> + fdb->is_local = 1;
> + fdb->used = jiffies;
> + fdb->updated = jiffies;
> + fdb_notify(br, fdb, RTM_NEWNEIGH);
> + } else {
> + err = -EEXIST;
> + }
> +
> +err_unlock:
> + spin_unlock(&br->hash_lock);
> +err_rtnl_unlock:
> + rtnl_unlock();
> +
> + return err;
> +}
> +EXPORT_SYMBOL(br_fdb_learn_add);
> +
> +int br_fdb_learn_del(struct net_device *dev, 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 == NULL) {
> + pr_info("bridge: %s not a bridge port\n", dev->name);
> + err = -EINVAL;
> + goto err_rtnl_unlock;
> + }
> +
> + br = p->br;
> +
> + spin_lock(&br->hash_lock);
> +
> + head = &br->hash[br_mac_hash(addr, vid)];
> + fdb = fdb_find(head, addr, vid);
> + if (fdb)
> + fdb_delete(br, fdb);
> + else
> + err = -ENOENT;
> +
> + spin_unlock(&br->hash_lock);
> +err_rtnl_unlock:
> + rtnl_unlock();
> +
> + return err;
> +}
> +EXPORT_SYMBOL(br_fdb_learn_del);
next prev parent reply other threads:[~2014-11-11 14:21 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-09 10:51 [patch net-next v2 00/10] introduce rocker switch driver with hardware accelerated datapath api - phase 1: bridge fdb offload Jiri Pirko
2014-11-09 10:51 ` [patch net-next v2 01/10] net: rename netdev_phys_port_id to more generic name Jiri Pirko
2014-11-10 3:35 ` Jamal Hadi Salim
2014-11-10 5:23 ` David Miller
2014-11-10 12:06 ` Jamal Hadi Salim
2014-11-10 12:33 ` Daniel Borkmann
2014-11-10 12:56 ` Jamal Hadi Salim
2014-11-10 16:28 ` David Miller
2014-11-10 7:43 ` Jiri Pirko
2014-11-10 12:17 ` Jamal Hadi Salim
2014-11-10 13:16 ` Jiri Pirko
2014-11-10 13:20 ` Jamal Hadi Salim
2014-11-10 16:28 ` David Miller
2014-11-10 19:03 ` Jamal Hadi Salim
2014-11-10 21:57 ` John Fastabend
2014-11-09 10:51 ` [patch net-next v2 02/10] net: introduce generic switch devices support Jiri Pirko
2014-11-10 21:59 ` John Fastabend
2014-11-11 15:11 ` Jiri Pirko
2014-11-11 9:49 ` M. Braun
2014-11-11 10:04 ` Jiri Pirko
2014-11-19 13:28 ` Roopa Prabhu
2014-11-19 13:46 ` Jiri Pirko
2014-11-19 13:59 ` Roopa Prabhu
2014-11-20 15:55 ` Andy Gospodarek
2014-11-21 7:16 ` Jiri Pirko
2014-11-09 10:51 ` [patch net-next v2 03/10] rtnl: expose physical switch id for particular device Jiri Pirko
2014-11-10 3:43 ` Jamal Hadi Salim
2014-11-10 7:45 ` Jiri Pirko
2014-11-10 17:58 ` Roopa Prabhu
2014-11-10 20:02 ` Scott Feldman
2014-11-11 13:55 ` Roopa Prabhu
2014-11-10 22:14 ` Jiri Pirko
2014-11-10 22:31 ` John Fastabend
2014-11-10 22:01 ` John Fastabend
2014-11-09 10:51 ` [patch net-next v2 04/10] net-sysfs: " Jiri Pirko
2014-11-10 22:01 ` John Fastabend
2014-11-09 10:51 ` [patch net-next v2 05/10] rocker: introduce rocker switch driver Jiri Pirko
2014-11-10 22:04 ` John Fastabend
2014-11-11 14:29 ` Thomas Graf
2014-11-11 15:19 ` Jiri Pirko
2014-11-11 15:32 ` Thomas Graf
2014-11-11 15:40 ` Jiri Pirko
2014-11-11 16:10 ` Thomas Graf
2014-11-27 14:09 ` Florian Fainelli
2014-11-11 15:41 ` Roopa Prabhu
2014-11-11 15:44 ` John Fastabend
2014-11-11 15:28 ` Jiri Pirko
2014-11-09 10:51 ` [patch net-next v2 06/10] bridge: introduce fdb offloading via switchdev Jiri Pirko
2014-11-10 3:47 ` Jamal Hadi Salim
2014-11-10 8:15 ` Jiri Pirko
2014-11-10 9:30 ` Scott Feldman
2014-11-10 12:47 ` Jamal Hadi Salim
2014-11-10 13:47 ` Jiri Pirko
2014-11-10 19:13 ` Jamal Hadi Salim
2014-11-10 13:51 ` Thomas Graf
2014-11-10 17:30 ` Andy Gospodarek
2014-11-10 19:03 ` Roopa Prabhu
2014-11-12 13:43 ` Jiri Pirko
2014-11-09 10:51 ` [patch net-next v2 07/10] bridge: call netdev_sw_port_stp_update when bridge port STP status changes Jiri Pirko
2014-11-10 13:11 ` Jamal Hadi Salim
2014-11-10 14:04 ` Thomas Graf
2014-11-10 19:20 ` Jamal Hadi Salim
2014-11-10 15:59 ` Roopa Prabhu
2014-11-09 10:51 ` [patch net-next v2 08/10] bridge: add API to notify bridge driver of learned FBD on offloaded device Jiri Pirko
2014-11-11 14:21 ` Roopa Prabhu [this message]
2014-11-11 17:38 ` Scott Feldman
2014-11-11 21:43 ` Roopa Prabhu
2014-11-09 10:51 ` [patch net-next v2 09/10] rocker: implement rocker ofdpa flow table manipulation Jiri Pirko
2014-11-09 10:51 ` [patch net-next v2 10/10] rocker: implement L2 bridge offloading Jiri Pirko
2014-11-10 3:53 ` Jamal Hadi Salim
2014-11-10 8:18 ` Jiri Pirko
2014-11-10 9:10 ` Nicolas Dichtel
2014-11-10 8:46 ` Scott Feldman
2014-11-10 12:27 ` Jamal Hadi Salim
2014-11-10 16:12 ` Roopa Prabhu
2014-11-10 17:36 ` Scott Feldman
2014-11-10 18:35 ` Roopa Prabhu
2014-11-10 19:27 ` Jamal Hadi Salim
2014-11-10 19:47 ` Scott Feldman
2014-11-10 21:14 ` Jamal Hadi Salim
2014-11-10 19:25 ` Jamal Hadi Salim
2014-11-10 17:22 ` Scott Feldman
2014-11-09 16:40 ` [patch net-next] bridge: rename fdb_*_hw to fdb_*_hw_addr to avoid confusion Jiri Pirko
2014-11-11 2:33 ` David Miller
2014-11-11 7:20 ` Jiri Pirko
2014-11-10 3:31 ` [patch net-next v2 00/10] introduce rocker switch driver with hardware accelerated datapath api - phase 1: bridge fdb offload Jamal Hadi Salim
2014-11-10 3:46 ` Simon Horman
2014-11-10 4:03 ` Jamal Hadi Salim
2014-11-10 4:58 ` Simon Horman
2014-11-10 22:23 ` John Fastabend
2014-11-11 8:51 ` Simon Horman
2014-11-13 5:44 ` Simon Horman
2014-11-13 6:31 ` John Fastabend
2014-11-21 2:01 ` Simon Horman
2014-11-21 7:20 ` John Fastabend
2014-11-10 7:23 ` Jiri Pirko
2014-11-10 12:16 ` Jamal Hadi Salim
2014-11-10 13:12 ` Jiri Pirko
2014-11-10 16:48 ` Thomas Graf
2014-11-12 13:44 ` Jiri Pirko
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