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Commit 31e8a49c authored by stephen hemminger's avatar stephen hemminger Committed by David S. Miller
Browse files

bridge: rearrange fdb notifications (v2) 



Pass bridge to fdb_notify so it can determine correct namespace based
on namespace of bridge rather than namespace of destination port.
Also makes next patch easier.

Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f58ee4e1

net/bridge/br_fdb.c

+20 −19
Original line number Diff line number Diff line
@@ -28,7 +28,8 @@ 
static struct kmem_cache *br_fdb_cache __read_mostly;

static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,

		      const unsigned char *addr);

static void fdb_notify(const struct net_bridge_fdb_entry *, int);

static void fdb_notify(struct net_bridge *br,

		       const struct net_bridge_fdb_entry *, int);



static u32 fdb_salt __read_mostly;
@@ -80,10 +81,10 @@ static void fdb_rcu_free(struct rcu_head *head) 
	kmem_cache_free(br_fdb_cache, ent);

}



static inline void fdb_delete(struct net_bridge_fdb_entry *f)

static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f)

{

	fdb_notify(f, RTM_DELNEIGH);

	hlist_del_rcu(&f->hlist);

	fdb_notify(br, f, RTM_DELNEIGH);

	call_rcu(&f->rcu, fdb_rcu_free);

}
@@ -114,7 +115,7 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr) 
				}



				/* delete old one */

				fdb_delete(f);

				fdb_delete(br, f);

				goto insert;

			}

		}
@@ -144,7 +145,7 @@ void br_fdb_cleanup(unsigned long _data) 
				continue;

			this_timer = f->updated + delay;

			if (time_before_eq(this_timer, jiffies))

				fdb_delete(f);

				fdb_delete(br, f);

			else if (time_before(this_timer, next_timer))

				next_timer = this_timer;

		}
@@ -165,7 +166,7 @@ void br_fdb_flush(struct net_bridge *br) 
		struct hlist_node *h, *n;

		hlist_for_each_entry_safe(f, h, n, &br->hash[i], hlist) {

			if (!f->is_static)

				fdb_delete(f);

				fdb_delete(br, f);

		}

	}

	spin_unlock_bh(&br->hash_lock);
@@ -209,7 +210,7 @@ void br_fdb_delete_by_port(struct net_bridge *br, 
				}

			}



			fdb_delete(f);

			fdb_delete(br, f);

		skip_delete: ;

		}

	}
@@ -370,7 +371,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, 
		br_warn(br, "adding interface %s with same address "

		       "as a received packet\n",

		       source->dev->name);

		fdb_delete(fdb);

		fdb_delete(br, fdb);

	}



	fdb = fdb_create(head, source, addr);
@@ -378,7 +379,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, 
		return -ENOMEM;



	fdb->is_local = fdb->is_static = 1;

	fdb_notify(fdb, RTM_NEWNEIGH);

	fdb_notify(br, fdb, RTM_NEWNEIGH);

	return 0;

}
@@ -427,7 +428,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, 
		if (likely(!fdb_find(head, addr))) {

			fdb = fdb_create(head, source, addr);

			if (fdb)

				fdb_notify(fdb, RTM_NEWNEIGH);

				fdb_notify(br, fdb, RTM_NEWNEIGH);

		}

		/* else  we lose race and someone else inserts

		 * it first, don't bother updating
@@ -448,7 +449,7 @@ static int fdb_to_nud(const struct net_bridge_fdb_entry *fdb) 
		return NUD_REACHABLE;

}



static int fdb_fill_info(struct sk_buff *skb,

static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,

			 const struct net_bridge_fdb_entry *fdb,

			 u32 pid, u32 seq, int type, unsigned int flags)

{
@@ -461,7 +462,6 @@ static int fdb_fill_info(struct sk_buff *skb, 
	if (nlh == NULL)

		return -EMSGSIZE;





	ndm = nlmsg_data(nlh);

	ndm->ndm_family	 = AF_BRIDGE;

	ndm->ndm_pad1    = 0;
@@ -493,9 +493,10 @@ static inline size_t fdb_nlmsg_size(void) 
		+ nla_total_size(sizeof(struct nda_cacheinfo));

}



static void fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)

static void fdb_notify(struct net_bridge *br,

		       const struct net_bridge_fdb_entry *fdb, int type)

{

	struct net *net = dev_net(fdb->dst->dev);

	struct net *net = dev_net(br->dev);

	struct sk_buff *skb;

	int err = -ENOBUFS;
@@ -503,7 +504,7 @@ static void fdb_notify(const struct net_bridge_fdb_entry *fdb, int type) 
	if (skb == NULL)

		goto errout;



	err = fdb_fill_info(skb, fdb, 0, 0, type, 0);

	err = fdb_fill_info(skb, br, fdb, 0, 0, type, 0);

	if (err < 0) {

		/* -EMSGSIZE implies BUG in fdb_nlmsg_size() */

		WARN_ON(err == -EMSGSIZE);
@@ -540,7 +541,7 @@ int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) 
				if (idx < cb->args[0])

					goto skip;



				if (fdb_fill_info(skb, f,

				if (fdb_fill_info(skb, br, f,

						  NETLINK_CB(cb->skb).pid,

						  cb->nlh->nlmsg_seq,

						  RTM_NEWNEIGH,
@@ -574,7 +575,7 @@ static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr, 
		fdb = fdb_create(head, source, addr);

		if (!fdb)

			return -ENOMEM;

		fdb_notify(fdb, RTM_NEWNEIGH);

		fdb_notify(br, fdb, RTM_NEWNEIGH);

	} else {

		if (flags & NLM_F_EXCL)

			return -EEXIST;
@@ -590,7 +591,7 @@ static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr, 
			fdb->is_local = fdb->is_static = 0;



		fdb->updated = fdb->used = jiffies;

		fdb_notify(fdb, RTM_NEWNEIGH);

		fdb_notify(br, fdb, RTM_NEWNEIGH);

	}



	return 0;
@@ -670,7 +671,7 @@ static int fdb_delete_by_addr(struct net_bridge_port *p, const u8 *addr) 
	if (!fdb)

		return -ENOENT;



	fdb_delete(fdb);

	fdb_delete(p->br, fdb);

	return 0;

}