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net: bridge: remove fdb_notify forward declaration
fdb_notify() has a forward declaration because its first caller, fdb_delete(), is declared before 3 functions that fdb_notify() needs: fdb_to_nud(), fdb_fill_info() and fdb_nlmsg_size(). This patch moves the aforementioned 4 functions above fdb_delete() and deletes the forward declaration. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean
David S. Miller
parent
e334df1d33
commit
4682048af0
@ -34,8 +34,6 @@ static const struct rhashtable_params br_fdb_rht_params = {
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static struct kmem_cache *br_fdb_cache __read_mostly;
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static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
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const unsigned char *addr, u16 vid);
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static void fdb_notify(struct net_bridge *br,
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const struct net_bridge_fdb_entry *, int, bool);
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int __init br_fdb_init(void)
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{
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@ -87,6 +85,128 @@ static void fdb_rcu_free(struct rcu_head *head)
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kmem_cache_free(br_fdb_cache, ent);
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}
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static int fdb_to_nud(const struct net_bridge *br,
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const struct net_bridge_fdb_entry *fdb)
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{
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if (test_bit(BR_FDB_LOCAL, &fdb->flags))
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return NUD_PERMANENT;
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else if (test_bit(BR_FDB_STATIC, &fdb->flags))
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return NUD_NOARP;
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else if (has_expired(br, fdb))
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return NUD_STALE;
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else
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return NUD_REACHABLE;
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}
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static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
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const struct net_bridge_fdb_entry *fdb,
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u32 portid, u32 seq, int type, unsigned int flags)
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{
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const struct net_bridge_port *dst = READ_ONCE(fdb->dst);
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unsigned long now = jiffies;
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struct nda_cacheinfo ci;
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struct nlmsghdr *nlh;
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struct ndmsg *ndm;
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nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
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if (nlh == NULL)
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return -EMSGSIZE;
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ndm = nlmsg_data(nlh);
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ndm->ndm_family = AF_BRIDGE;
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ndm->ndm_pad1 = 0;
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ndm->ndm_pad2 = 0;
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ndm->ndm_flags = 0;
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ndm->ndm_type = 0;
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ndm->ndm_ifindex = dst ? dst->dev->ifindex : br->dev->ifindex;
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ndm->ndm_state = fdb_to_nud(br, fdb);
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if (test_bit(BR_FDB_OFFLOADED, &fdb->flags))
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ndm->ndm_flags |= NTF_OFFLOADED;
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if (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags))
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ndm->ndm_flags |= NTF_EXT_LEARNED;
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if (test_bit(BR_FDB_STICKY, &fdb->flags))
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ndm->ndm_flags |= NTF_STICKY;
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if (nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->key.addr))
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goto nla_put_failure;
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if (nla_put_u32(skb, NDA_MASTER, br->dev->ifindex))
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goto nla_put_failure;
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ci.ndm_used = jiffies_to_clock_t(now - fdb->used);
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ci.ndm_confirmed = 0;
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ci.ndm_updated = jiffies_to_clock_t(now - fdb->updated);
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ci.ndm_refcnt = 0;
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if (nla_put(skb, NDA_CACHEINFO, sizeof(ci), &ci))
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goto nla_put_failure;
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if (fdb->key.vlan_id && nla_put(skb, NDA_VLAN, sizeof(u16),
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&fdb->key.vlan_id))
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goto nla_put_failure;
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if (test_bit(BR_FDB_NOTIFY, &fdb->flags)) {
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struct nlattr *nest = nla_nest_start(skb, NDA_FDB_EXT_ATTRS);
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u8 notify_bits = FDB_NOTIFY_BIT;
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if (!nest)
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goto nla_put_failure;
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if (test_bit(BR_FDB_NOTIFY_INACTIVE, &fdb->flags))
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notify_bits |= FDB_NOTIFY_INACTIVE_BIT;
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if (nla_put_u8(skb, NFEA_ACTIVITY_NOTIFY, notify_bits)) {
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nla_nest_cancel(skb, nest);
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goto nla_put_failure;
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}
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nla_nest_end(skb, nest);
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}
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nlmsg_end(skb, nlh);
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return 0;
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nla_put_failure:
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nlmsg_cancel(skb, nlh);
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return -EMSGSIZE;
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}
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static inline size_t fdb_nlmsg_size(void)
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{
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return NLMSG_ALIGN(sizeof(struct ndmsg))
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+ nla_total_size(ETH_ALEN) /* NDA_LLADDR */
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+ nla_total_size(sizeof(u32)) /* NDA_MASTER */
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+ nla_total_size(sizeof(u16)) /* NDA_VLAN */
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+ nla_total_size(sizeof(struct nda_cacheinfo))
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+ nla_total_size(0) /* NDA_FDB_EXT_ATTRS */
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+ nla_total_size(sizeof(u8)); /* NFEA_ACTIVITY_NOTIFY */
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}
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static void fdb_notify(struct net_bridge *br,
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const struct net_bridge_fdb_entry *fdb, int type,
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bool swdev_notify)
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{
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struct net *net = dev_net(br->dev);
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struct sk_buff *skb;
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int err = -ENOBUFS;
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if (swdev_notify)
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br_switchdev_fdb_notify(br, fdb, type);
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skb = nlmsg_new(fdb_nlmsg_size(), GFP_ATOMIC);
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if (skb == NULL)
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goto errout;
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err = fdb_fill_info(skb, br, fdb, 0, 0, type, 0);
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if (err < 0) {
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/* -EMSGSIZE implies BUG in fdb_nlmsg_size() */
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WARN_ON(err == -EMSGSIZE);
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kfree_skb(skb);
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goto errout;
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}
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rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
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return;
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errout:
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rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);
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}
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static struct net_bridge_fdb_entry *fdb_find_rcu(struct rhashtable *tbl,
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const unsigned char *addr,
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__u16 vid)
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@ -638,100 +758,6 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
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}
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}
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static int fdb_to_nud(const struct net_bridge *br,
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const struct net_bridge_fdb_entry *fdb)
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{
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if (test_bit(BR_FDB_LOCAL, &fdb->flags))
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return NUD_PERMANENT;
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else if (test_bit(BR_FDB_STATIC, &fdb->flags))
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return NUD_NOARP;
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else if (has_expired(br, fdb))
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return NUD_STALE;
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else
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return NUD_REACHABLE;
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}
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static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
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const struct net_bridge_fdb_entry *fdb,
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u32 portid, u32 seq, int type, unsigned int flags)
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{
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const struct net_bridge_port *dst = READ_ONCE(fdb->dst);
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unsigned long now = jiffies;
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struct nda_cacheinfo ci;
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struct nlmsghdr *nlh;
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struct ndmsg *ndm;
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nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
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if (nlh == NULL)
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return -EMSGSIZE;
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ndm = nlmsg_data(nlh);
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ndm->ndm_family = AF_BRIDGE;
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ndm->ndm_pad1 = 0;
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ndm->ndm_pad2 = 0;
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ndm->ndm_flags = 0;
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ndm->ndm_type = 0;
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ndm->ndm_ifindex = dst ? dst->dev->ifindex : br->dev->ifindex;
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ndm->ndm_state = fdb_to_nud(br, fdb);
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if (test_bit(BR_FDB_OFFLOADED, &fdb->flags))
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ndm->ndm_flags |= NTF_OFFLOADED;
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if (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags))
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ndm->ndm_flags |= NTF_EXT_LEARNED;
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if (test_bit(BR_FDB_STICKY, &fdb->flags))
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ndm->ndm_flags |= NTF_STICKY;
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if (nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->key.addr))
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goto nla_put_failure;
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if (nla_put_u32(skb, NDA_MASTER, br->dev->ifindex))
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goto nla_put_failure;
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ci.ndm_used = jiffies_to_clock_t(now - fdb->used);
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ci.ndm_confirmed = 0;
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ci.ndm_updated = jiffies_to_clock_t(now - fdb->updated);
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ci.ndm_refcnt = 0;
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if (nla_put(skb, NDA_CACHEINFO, sizeof(ci), &ci))
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goto nla_put_failure;
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if (fdb->key.vlan_id && nla_put(skb, NDA_VLAN, sizeof(u16),
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&fdb->key.vlan_id))
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goto nla_put_failure;
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if (test_bit(BR_FDB_NOTIFY, &fdb->flags)) {
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struct nlattr *nest = nla_nest_start(skb, NDA_FDB_EXT_ATTRS);
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u8 notify_bits = FDB_NOTIFY_BIT;
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if (!nest)
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goto nla_put_failure;
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if (test_bit(BR_FDB_NOTIFY_INACTIVE, &fdb->flags))
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notify_bits |= FDB_NOTIFY_INACTIVE_BIT;
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if (nla_put_u8(skb, NFEA_ACTIVITY_NOTIFY, notify_bits)) {
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nla_nest_cancel(skb, nest);
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goto nla_put_failure;
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}
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nla_nest_end(skb, nest);
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}
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nlmsg_end(skb, nlh);
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return 0;
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nla_put_failure:
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nlmsg_cancel(skb, nlh);
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return -EMSGSIZE;
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}
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static inline size_t fdb_nlmsg_size(void)
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{
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return NLMSG_ALIGN(sizeof(struct ndmsg))
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+ nla_total_size(ETH_ALEN) /* NDA_LLADDR */
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+ nla_total_size(sizeof(u32)) /* NDA_MASTER */
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+ nla_total_size(sizeof(u16)) /* NDA_VLAN */
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+ nla_total_size(sizeof(struct nda_cacheinfo))
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+ nla_total_size(0) /* NDA_FDB_EXT_ATTRS */
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+ nla_total_size(sizeof(u8)); /* NFEA_ACTIVITY_NOTIFY */
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}
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static int br_fdb_replay_one(struct net_bridge *br, struct notifier_block *nb,
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const struct net_bridge_fdb_entry *fdb,
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unsigned long action, const void *ctx)
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@ -786,34 +812,6 @@ int br_fdb_replay(const struct net_device *br_dev, const void *ctx, bool adding,
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return err;
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}
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static void fdb_notify(struct net_bridge *br,
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const struct net_bridge_fdb_entry *fdb, int type,
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bool swdev_notify)
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{
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struct net *net = dev_net(br->dev);
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struct sk_buff *skb;
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int err = -ENOBUFS;
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if (swdev_notify)
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br_switchdev_fdb_notify(br, fdb, type);
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skb = nlmsg_new(fdb_nlmsg_size(), GFP_ATOMIC);
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if (skb == NULL)
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goto errout;
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err = fdb_fill_info(skb, br, fdb, 0, 0, type, 0);
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if (err < 0) {
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/* -EMSGSIZE implies BUG in fdb_nlmsg_size() */
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WARN_ON(err == -EMSGSIZE);
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kfree_skb(skb);
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goto errout;
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}
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rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
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return;
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errout:
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rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);
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}
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/* Dump information about entries, in response to GETNEIGH */
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int br_fdb_dump(struct sk_buff *skb,
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struct netlink_callback *cb,
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