[patch net-next 0/3] bridge: mdb: flag offloaded mdb entries

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* [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries
@ 2016-02-03  8:57 Jiri Pirko
  2016-02-03  8:57 ` [patch net-next 1/3] bridge: mdb: add support for " Jiri Pirko
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: Jiri Pirko @ 2016-02-03  8:57 UTC (permalink / raw)
  To: netdev; +Cc: davem, idosch, eladr, yotamg, ogerlitz, stephen, nikolay

From: Jiri Pirko <jiri@mellanox.com>

This patchset extends uapi to let the user know if an mdb entry is offloaded.

Elad Raz (3):
  bridge: mdb: add support for offloaded mdb entries
  bridge: mdb: Separate br_mdb_entry->state from
    net_bridge_port_group->state
  bridge: mdb: Passing the port-group pointer to br_mdb module

 include/uapi/linux/if_bridge.h |  2 ++
 net/bridge/br_mdb.c            | 63 ++++++++++++++++++++++++++----------------
 net/bridge/br_multicast.c      | 18 ++++++------
 net/bridge/br_private.h        | 11 +++++---
 4 files changed, 56 insertions(+), 38 deletions(-)

-- 
1.9.3

^ permalink raw reply	[flat|nested] 5+ messages in thread

* [patch net-next 1/3] bridge: mdb: add support for offloaded mdb entries
  2016-02-03  8:57 [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries Jiri Pirko
@ 2016-02-03  8:57 ` Jiri Pirko
  2016-02-03  8:57 ` [patch net-next 2/3] bridge: mdb: Separate br_mdb_entry->state from net_bridge_port_group->state Jiri Pirko
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 5+ messages in thread
From: Jiri Pirko @ 2016-02-03  8:57 UTC (permalink / raw)
  To: netdev; +Cc: davem, idosch, eladr, yotamg, ogerlitz, stephen, nikolay

From: Elad Raz <eladr@mellanox.com>

Add new bitmask member 'flags' to br_mdb_entry structure. Adding
MDB_FLAGS_OFFLOAD bit which indicates MDB entries is offloaded to hardware.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 include/uapi/linux/if_bridge.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h
index 18db144..ec35472 100644
--- a/include/uapi/linux/if_bridge.h
+++ b/include/uapi/linux/if_bridge.h
@@ -183,6 +183,8 @@ struct br_mdb_entry {
 #define MDB_TEMPORARY 0
 #define MDB_PERMANENT 1
 	__u8 state;
+#define MDB_FLAGS_OFFLOAD	(1 << 0)
+	__u8 flags;
 	__u16 vid;
 	struct {
 		union {
-- 
1.9.3

^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [patch net-next 2/3] bridge: mdb: Separate br_mdb_entry->state from net_bridge_port_group->state
  2016-02-03  8:57 [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries Jiri Pirko
  2016-02-03  8:57 ` [patch net-next 1/3] bridge: mdb: add support for " Jiri Pirko
@ 2016-02-03  8:57 ` Jiri Pirko
  2016-02-03  8:57 ` [patch net-next 3/3] bridge: mdb: Passing the port-group pointer to br_mdb module Jiri Pirko
  2016-02-09  9:43 ` [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries David Miller
  3 siblings, 0 replies; 5+ messages in thread
From: Jiri Pirko @ 2016-02-03  8:57 UTC (permalink / raw)
  To: netdev; +Cc: davem, idosch, eladr, yotamg, ogerlitz, stephen, nikolay

From: Elad Raz <eladr@mellanox.com>

Change net_bridge_port_group 'state' member to 'flags' and define new set
of flags internal to the kernel.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 net/bridge/br_mdb.c       | 16 ++++++++++++----
 net/bridge/br_multicast.c | 16 ++++++++--------
 net/bridge/br_private.h   |  9 ++++++---
 3 files changed, 26 insertions(+), 15 deletions(-)

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 30e105f..5312570 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -41,6 +41,14 @@ fail:
 	return -EMSGSIZE;
 }
 
+static void __mdb_entry_fill_flags(struct br_mdb_entry *e, unsigned char flags)
+{
+	e->state = flags & MDB_PG_FLAGS_PERMANENT;
+	e->flags = 0;
+	if (flags & MDB_PG_FLAGS_OFFLOAD)
+		e->flags |= MDB_FLAGS_OFFLOAD;
+}
+
 static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
 			    struct net_device *dev)
 {
@@ -85,8 +93,8 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
 					struct br_mdb_entry e;
 					memset(&e, 0, sizeof(e));
 					e.ifindex = port->dev->ifindex;
-					e.state = p->state;
 					e.vid = p->addr.vid;
+					__mdb_entry_fill_flags(&e, p->flags);
 					if (p->addr.proto == htons(ETH_P_IP))
 						e.addr.u.ip4 = p->addr.u.ip4;
 #if IS_ENABLED(CONFIG_IPV6)
@@ -254,7 +262,7 @@ errout:
 }
 
 void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
-		   struct br_ip *group, int type, u8 state)
+		   struct br_ip *group, int type, u8 flags)
 {
 	struct br_mdb_entry entry;
 
@@ -265,8 +273,8 @@ void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
 #if IS_ENABLED(CONFIG_IPV6)
 	entry.addr.u.ip6 = group->u.ip6;
 #endif
-	entry.state = state;
 	entry.vid = group->vid;
+	__mdb_entry_fill_flags(&entry, flags);
 	__br_mdb_notify(dev, &entry, type);
 }
 
@@ -568,7 +576,7 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry)
 		if (p->port->state == BR_STATE_DISABLED)
 			goto unlock;
 
-		entry->state = p->state;
+		__mdb_entry_fill_flags(entry, p->flags);
 		rcu_assign_pointer(*pp, p->next);
 		hlist_del_init(&p->mglist);
 		del_timer(&p->timer);
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 03661d9..d156491 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -284,7 +284,7 @@ static void br_multicast_del_pg(struct net_bridge *br,
 		hlist_del_init(&p->mglist);
 		del_timer(&p->timer);
 		br_mdb_notify(br->dev, p->port, &pg->addr, RTM_DELMDB,
-			      p->state);
+			      p->flags);
 		call_rcu_bh(&p->rcu, br_multicast_free_pg);
 
 		if (!mp->ports && !mp->mglist &&
@@ -304,7 +304,7 @@ static void br_multicast_port_group_expired(unsigned long data)
 
 	spin_lock(&br->multicast_lock);
 	if (!netif_running(br->dev) || timer_pending(&pg->timer) ||
-	    hlist_unhashed(&pg->mglist) || pg->state & MDB_PERMANENT)
+	    hlist_unhashed(&pg->mglist) || pg->flags & MDB_PG_FLAGS_PERMANENT)
 		goto out;
 
 	br_multicast_del_pg(br, pg);
@@ -649,7 +649,7 @@ struct net_bridge_port_group *br_multicast_new_port_group(
 			struct net_bridge_port *port,
 			struct br_ip *group,
 			struct net_bridge_port_group __rcu *next,
-			unsigned char state)
+			unsigned char flags)
 {
 	struct net_bridge_port_group *p;
 
@@ -659,7 +659,7 @@ struct net_bridge_port_group *br_multicast_new_port_group(
 
 	p->addr = *group;
 	p->port = port;
-	p->state = state;
+	p->flags = flags;
 	rcu_assign_pointer(p->next, next);
 	hlist_add_head(&p->mglist, &port->mglist);
 	setup_timer(&p->timer, br_multicast_port_group_expired,
@@ -702,11 +702,11 @@ static int br_multicast_add_group(struct net_bridge *br,
 			break;
 	}
 
-	p = br_multicast_new_port_group(port, group, *pp, MDB_TEMPORARY);
+	p = br_multicast_new_port_group(port, group, *pp, 0);
 	if (unlikely(!p))
 		goto err;
 	rcu_assign_pointer(*pp, p);
-	br_mdb_notify(br->dev, port, group, RTM_NEWMDB, MDB_TEMPORARY);
+	br_mdb_notify(br->dev, port, group, RTM_NEWMDB, 0);
 
 found:
 	mod_timer(&p->timer, now + br->multicast_membership_interval);
@@ -975,7 +975,7 @@ void br_multicast_disable_port(struct net_bridge_port *port)
 
 	spin_lock(&br->multicast_lock);
 	hlist_for_each_entry_safe(pg, n, &port->mglist, mglist)
-		if (pg->state == MDB_TEMPORARY)
+		if (!(pg->flags & MDB_PG_FLAGS_PERMANENT))
 			br_multicast_del_pg(br, pg);
 
 	if (!hlist_unhashed(&port->rlist)) {
@@ -1454,7 +1454,7 @@ br_multicast_leave_group(struct net_bridge *br,
 			del_timer(&p->timer);
 			call_rcu_bh(&p->rcu, br_multicast_free_pg);
 			br_mdb_notify(br->dev, port, group, RTM_DELMDB,
-				      p->state);
+				      p->flags);
 
 			if (!mp->ports && !mp->mglist &&
 			    netif_running(br->dev))
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 216018c..67f4dce 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -150,6 +150,9 @@ struct net_bridge_fdb_entry
 	struct rcu_head			rcu;
 };
 
+#define MDB_PG_FLAGS_PERMANENT	BIT(0)
+#define MDB_PG_FLAGS_OFFLOAD	BIT(1)
+
 struct net_bridge_port_group {
 	struct net_bridge_port		*port;
 	struct net_bridge_port_group __rcu *next;
@@ -157,7 +160,7 @@ struct net_bridge_port_group {
 	struct rcu_head			rcu;
 	struct timer_list		timer;
 	struct br_ip			addr;
-	unsigned char			state;
+	unsigned char			flags;
 };
 
 struct net_bridge_mdb_entry
@@ -554,11 +557,11 @@ void br_multicast_free_pg(struct rcu_head *head);
 struct net_bridge_port_group *
 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
 			    struct net_bridge_port_group __rcu *next,
-			    unsigned char state);
+			    unsigned char flags);
 void br_mdb_init(void);
 void br_mdb_uninit(void);
 void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
-		   struct br_ip *group, int type, u8 state);
+		   struct br_ip *group, int type, u8 flags);
 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
 		   int type);
 
-- 
1.9.3

^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [patch net-next 3/3] bridge: mdb: Passing the port-group pointer to br_mdb module
  2016-02-03  8:57 [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries Jiri Pirko
  2016-02-03  8:57 ` [patch net-next 1/3] bridge: mdb: add support for " Jiri Pirko
  2016-02-03  8:57 ` [patch net-next 2/3] bridge: mdb: Separate br_mdb_entry->state from net_bridge_port_group->state Jiri Pirko
@ 2016-02-03  8:57 ` Jiri Pirko
  2016-02-09  9:43 ` [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries David Miller
  3 siblings, 0 replies; 5+ messages in thread
From: Jiri Pirko @ 2016-02-03  8:57 UTC (permalink / raw)
  To: netdev; +Cc: davem, idosch, eladr, yotamg, ogerlitz, stephen, nikolay

From: Elad Raz <eladr@mellanox.com>

Passing the port-group to br_mdb in order to allow direct access to the
structure. br_mdb will later use the structure to reflect HW reflection
status via "state" variable.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 net/bridge/br_mdb.c       | 51 +++++++++++++++++++++++++++--------------------
 net/bridge/br_multicast.c |  8 +++-----
 net/bridge/br_private.h   |  4 ++--
 3 files changed, 34 insertions(+), 29 deletions(-)

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 5312570..ac089286 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -217,7 +217,7 @@ static inline size_t rtnl_mdb_nlmsg_size(void)
 }
 
 static void __br_mdb_notify(struct net_device *dev, struct br_mdb_entry *entry,
-			    int type)
+			    int type, struct net_bridge_port_group *pg)
 {
 	struct switchdev_obj_port_mdb mdb = {
 		.obj = {
@@ -240,10 +240,13 @@ static void __br_mdb_notify(struct net_device *dev, struct br_mdb_entry *entry,
 #endif
 
 	mdb.obj.orig_dev = port_dev;
-	if (port_dev && type == RTM_NEWMDB)
-		switchdev_port_obj_add(port_dev, &mdb.obj);
-	else if (port_dev && type == RTM_DELMDB)
+	if (port_dev && type == RTM_NEWMDB) {
+		err = switchdev_port_obj_add(port_dev, &mdb.obj);
+		if (!err && pg)
+			pg->flags |= MDB_PG_FLAGS_OFFLOAD;
+	} else if (port_dev && type == RTM_DELMDB) {
 		switchdev_port_obj_del(port_dev, &mdb.obj);
+	}
 
 	skb = nlmsg_new(rtnl_mdb_nlmsg_size(), GFP_ATOMIC);
 	if (!skb)
@@ -261,21 +264,21 @@ errout:
 	rtnl_set_sk_err(net, RTNLGRP_MDB, err);
 }
 
-void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
-		   struct br_ip *group, int type, u8 flags)
+void br_mdb_notify(struct net_device *dev, struct net_bridge_port_group *pg,
+		   int type)
 {
 	struct br_mdb_entry entry;
 
 	memset(&entry, 0, sizeof(entry));
-	entry.ifindex = port->dev->ifindex;
-	entry.addr.proto = group->proto;
-	entry.addr.u.ip4 = group->u.ip4;
+	entry.ifindex = pg->port->dev->ifindex;
+	entry.addr.proto = pg->addr.proto;
+	entry.addr.u.ip4 = pg->addr.u.ip4;
 #if IS_ENABLED(CONFIG_IPV6)
-	entry.addr.u.ip6 = group->u.ip6;
+	entry.addr.u.ip6 = pg->addr.u.ip6;
 #endif
-	entry.vid = group->vid;
-	__mdb_entry_fill_flags(&entry, flags);
-	__br_mdb_notify(dev, &entry, type);
+	entry.vid = pg->addr.vid;
+	__mdb_entry_fill_flags(&entry, pg->flags);
+	__br_mdb_notify(dev, &entry, type, pg);
 }
 
 static int nlmsg_populate_rtr_fill(struct sk_buff *skb,
@@ -420,7 +423,8 @@ static int br_mdb_parse(struct sk_buff *skb, struct nlmsghdr *nlh,
 }
 
 static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
-			    struct br_ip *group, unsigned char state)
+			    struct br_ip *group, unsigned char state,
+			    struct net_bridge_port_group **pg)
 {
 	struct net_bridge_mdb_entry *mp;
 	struct net_bridge_port_group *p;
@@ -451,6 +455,7 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
 	if (unlikely(!p))
 		return -ENOMEM;
 	rcu_assign_pointer(*pp, p);
+	*pg = p;
 	if (state == MDB_TEMPORARY)
 		mod_timer(&p->timer, now + br->multicast_membership_interval);
 
@@ -458,7 +463,8 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
 }
 
 static int __br_mdb_add(struct net *net, struct net_bridge *br,
-			struct br_mdb_entry *entry)
+			struct br_mdb_entry *entry,
+			struct net_bridge_port_group **pg)
 {
 	struct br_ip ip;
 	struct net_device *dev;
@@ -487,7 +493,7 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br,
 #endif
 
 	spin_lock_bh(&br->multicast_lock);
-	ret = br_mdb_add_group(br, p, &ip, entry->state);
+	ret = br_mdb_add_group(br, p, &ip, entry->state, pg);
 	spin_unlock_bh(&br->multicast_lock);
 	return ret;
 }
@@ -495,6 +501,7 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br,
 static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh)
 {
 	struct net *net = sock_net(skb->sk);
+	struct net_bridge_port_group *pg;
 	struct net_bridge_vlan_group *vg;
 	struct net_device *dev, *pdev;
 	struct br_mdb_entry *entry;
@@ -524,15 +531,15 @@ static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh)
 	if (br_vlan_enabled(br) && vg && entry->vid == 0) {
 		list_for_each_entry(v, &vg->vlan_list, vlist) {
 			entry->vid = v->vid;
-			err = __br_mdb_add(net, br, entry);
+			err = __br_mdb_add(net, br, entry, &pg);
 			if (err)
 				break;
-			__br_mdb_notify(dev, entry, RTM_NEWMDB);
+			__br_mdb_notify(dev, entry, RTM_NEWMDB, pg);
 		}
 	} else {
-		err = __br_mdb_add(net, br, entry);
+		err = __br_mdb_add(net, br, entry, &pg);
 		if (!err)
-			__br_mdb_notify(dev, entry, RTM_NEWMDB);
+			__br_mdb_notify(dev, entry, RTM_NEWMDB, pg);
 	}
 
 	return err;
@@ -628,12 +635,12 @@ static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh)
 			entry->vid = v->vid;
 			err = __br_mdb_del(br, entry);
 			if (!err)
-				__br_mdb_notify(dev, entry, RTM_DELMDB);
+				__br_mdb_notify(dev, entry, RTM_DELMDB, NULL);
 		}
 	} else {
 		err = __br_mdb_del(br, entry);
 		if (!err)
-			__br_mdb_notify(dev, entry, RTM_DELMDB);
+			__br_mdb_notify(dev, entry, RTM_DELMDB, NULL);
 	}
 
 	return err;
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index d156491..8b6e424 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -283,8 +283,7 @@ static void br_multicast_del_pg(struct net_bridge *br,
 		rcu_assign_pointer(*pp, p->next);
 		hlist_del_init(&p->mglist);
 		del_timer(&p->timer);
-		br_mdb_notify(br->dev, p->port, &pg->addr, RTM_DELMDB,
-			      p->flags);
+		br_mdb_notify(br->dev, p, RTM_DELMDB);
 		call_rcu_bh(&p->rcu, br_multicast_free_pg);
 
 		if (!mp->ports && !mp->mglist &&
@@ -706,7 +705,7 @@ static int br_multicast_add_group(struct net_bridge *br,
 	if (unlikely(!p))
 		goto err;
 	rcu_assign_pointer(*pp, p);
-	br_mdb_notify(br->dev, port, group, RTM_NEWMDB, 0);
+	br_mdb_notify(br->dev, p, RTM_NEWMDB);
 
 found:
 	mod_timer(&p->timer, now + br->multicast_membership_interval);
@@ -1453,8 +1452,7 @@ br_multicast_leave_group(struct net_bridge *br,
 			hlist_del_init(&p->mglist);
 			del_timer(&p->timer);
 			call_rcu_bh(&p->rcu, br_multicast_free_pg);
-			br_mdb_notify(br->dev, port, group, RTM_DELMDB,
-				      p->flags);
+			br_mdb_notify(br->dev, p, RTM_DELMDB);
 
 			if (!mp->ports && !mp->mglist &&
 			    netif_running(br->dev))
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 67f4dce..302ab0a 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -560,8 +560,8 @@ br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
 			    unsigned char flags);
 void br_mdb_init(void);
 void br_mdb_uninit(void);
-void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
-		   struct br_ip *group, int type, u8 flags);
+void br_mdb_notify(struct net_device *dev, struct net_bridge_port_group *pg,
+		   int type);
 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
 		   int type);
 
-- 
1.9.3

^ permalink raw reply related	[flat|nested] 5+ messages in thread

* Re: [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries
  2016-02-03  8:57 [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries Jiri Pirko
                   ` (2 preceding siblings ...)
  2016-02-03  8:57 ` [patch net-next 3/3] bridge: mdb: Passing the port-group pointer to br_mdb module Jiri Pirko
@ 2016-02-09  9:43 ` David Miller
  3 siblings, 0 replies; 5+ messages in thread
From: David Miller @ 2016-02-09  9:43 UTC (permalink / raw)
  To: jiri; +Cc: netdev, idosch, eladr, yotamg, ogerlitz, stephen, nikolay

From: Jiri Pirko <jiri@resnulli.us>
Date: Wed,  3 Feb 2016 09:57:03 +0100

> This patchset extends uapi to let the user know if an mdb entry is
> offloaded.

Series applied, but I really hope that it is safe to use that empry u8
slot for the flag field.

Thanks.

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2016-02-09  9:43 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-02-03  8:57 [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries Jiri Pirko
2016-02-03  8:57 ` [patch net-next 1/3] bridge: mdb: add support for " Jiri Pirko
2016-02-03  8:57 ` [patch net-next 2/3] bridge: mdb: Separate br_mdb_entry->state from net_bridge_port_group->state Jiri Pirko
2016-02-03  8:57 ` [patch net-next 3/3] bridge: mdb: Passing the port-group pointer to br_mdb module Jiri Pirko
2016-02-09  9:43 ` [patch net-next 0/3] bridge: mdb: flag offloaded mdb entries David Miller

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