diff options
Diffstat (limited to 'drivers/net/ipvlan')
-rw-r--r-- | drivers/net/ipvlan/ipvlan.h | 4 | ||||
-rw-r--r-- | drivers/net/ipvlan/ipvlan_core.c | 28 | ||||
-rw-r--r-- | drivers/net/ipvlan/ipvlan_main.c | 30 |
3 files changed, 42 insertions, 20 deletions
diff --git a/drivers/net/ipvlan/ipvlan.h b/drivers/net/ipvlan/ipvlan.h index 924ea98..54549a6 100644 --- a/drivers/net/ipvlan/ipvlan.h +++ b/drivers/net/ipvlan/ipvlan.h @@ -114,7 +114,9 @@ unsigned int ipvlan_mac_hash(const unsigned char *addr); rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb); int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev); void ipvlan_ht_addr_add(struct ipvl_dev *ipvlan, struct ipvl_addr *addr); -bool ipvlan_addr_busy(struct ipvl_dev *ipvlan, void *iaddr, bool is_v6); +struct ipvl_addr *ipvlan_find_addr(const struct ipvl_dev *ipvlan, + const void *iaddr, bool is_v6); +bool ipvlan_addr_busy(struct ipvl_port *port, void *iaddr, bool is_v6); struct ipvl_addr *ipvlan_ht_addr_lookup(const struct ipvl_port *port, const void *iaddr, bool is_v6); void ipvlan_ht_addr_del(struct ipvl_addr *addr, bool sync); diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c index 2a17500..b7877a1 100644 --- a/drivers/net/ipvlan/ipvlan_core.c +++ b/drivers/net/ipvlan/ipvlan_core.c @@ -81,19 +81,20 @@ void ipvlan_ht_addr_add(struct ipvl_dev *ipvlan, struct ipvl_addr *addr) hash = (addr->atype == IPVL_IPV6) ? ipvlan_get_v6_hash(&addr->ip6addr) : ipvlan_get_v4_hash(&addr->ip4addr); - hlist_add_head_rcu(&addr->hlnode, &port->hlhead[hash]); + if (hlist_unhashed(&addr->hlnode)) + hlist_add_head_rcu(&addr->hlnode, &port->hlhead[hash]); } void ipvlan_ht_addr_del(struct ipvl_addr *addr, bool sync) { - hlist_del_rcu(&addr->hlnode); + hlist_del_init_rcu(&addr->hlnode); if (sync) synchronize_rcu(); } -bool ipvlan_addr_busy(struct ipvl_dev *ipvlan, void *iaddr, bool is_v6) +struct ipvl_addr *ipvlan_find_addr(const struct ipvl_dev *ipvlan, + const void *iaddr, bool is_v6) { - struct ipvl_port *port = ipvlan->port; struct ipvl_addr *addr; list_for_each_entry(addr, &ipvlan->addrs, anode) { @@ -101,12 +102,21 @@ bool ipvlan_addr_busy(struct ipvl_dev *ipvlan, void *iaddr, bool is_v6) ipv6_addr_equal(&addr->ip6addr, iaddr)) || (!is_v6 && addr->atype == IPVL_IPV4 && addr->ip4addr.s_addr == ((struct in_addr *)iaddr)->s_addr)) - return true; + return addr; } + return NULL; +} + +bool ipvlan_addr_busy(struct ipvl_port *port, void *iaddr, bool is_v6) +{ + struct ipvl_dev *ipvlan; - if (ipvlan_ht_addr_lookup(port, iaddr, is_v6)) - return true; + ASSERT_RTNL(); + list_for_each_entry(ipvlan, &port->ipvlans, pnode) { + if (ipvlan_find_addr(ipvlan, iaddr, is_v6)) + return true; + } return false; } @@ -192,7 +202,8 @@ static void ipvlan_multicast_frame(struct ipvl_port *port, struct sk_buff *skb, if (skb->protocol == htons(ETH_P_PAUSE)) return; - list_for_each_entry(ipvlan, &port->ipvlans, pnode) { + rcu_read_lock(); + list_for_each_entry_rcu(ipvlan, &port->ipvlans, pnode) { if (local && (ipvlan == in_dev)) continue; @@ -219,6 +230,7 @@ static void ipvlan_multicast_frame(struct ipvl_port *port, struct sk_buff *skb, mcast_acct: ipvlan_count_rx(ipvlan, len, ret == NET_RX_SUCCESS, true); } + rcu_read_unlock(); /* Locally generated? ...Forward a copy to the main-device as * well. On the RX side we'll ignore it (wont give it to any diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c index 4f4099d..4fa1420 100644 --- a/drivers/net/ipvlan/ipvlan_main.c +++ b/drivers/net/ipvlan/ipvlan_main.c @@ -505,7 +505,7 @@ static void ipvlan_link_delete(struct net_device *dev, struct list_head *head) if (ipvlan->ipv6cnt > 0 || ipvlan->ipv4cnt > 0) { list_for_each_entry_safe(addr, next, &ipvlan->addrs, anode) { ipvlan_ht_addr_del(addr, !dev->dismantle); - list_del_rcu(&addr->anode); + list_del(&addr->anode); } } list_del_rcu(&ipvlan->pnode); @@ -607,7 +607,7 @@ static int ipvlan_add_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr) { struct ipvl_addr *addr; - if (ipvlan_addr_busy(ipvlan, ip6_addr, true)) { + if (ipvlan_addr_busy(ipvlan->port, ip6_addr, true)) { netif_err(ipvlan, ifup, ipvlan->dev, "Failed to add IPv6=%pI6c addr for %s intf\n", ip6_addr, ipvlan->dev->name); @@ -620,9 +620,13 @@ static int ipvlan_add_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr) addr->master = ipvlan; memcpy(&addr->ip6addr, ip6_addr, sizeof(struct in6_addr)); addr->atype = IPVL_IPV6; - list_add_tail_rcu(&addr->anode, &ipvlan->addrs); + list_add_tail(&addr->anode, &ipvlan->addrs); ipvlan->ipv6cnt++; - ipvlan_ht_addr_add(ipvlan, addr); + /* If the interface is not up, the address will be added to the hash + * list by ipvlan_open. + */ + if (netif_running(ipvlan->dev)) + ipvlan_ht_addr_add(ipvlan, addr); return 0; } @@ -631,12 +635,12 @@ static void ipvlan_del_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr) { struct ipvl_addr *addr; - addr = ipvlan_ht_addr_lookup(ipvlan->port, ip6_addr, true); + addr = ipvlan_find_addr(ipvlan, ip6_addr, true); if (!addr) return; ipvlan_ht_addr_del(addr, true); - list_del_rcu(&addr->anode); + list_del(&addr->anode); ipvlan->ipv6cnt--; WARN_ON(ipvlan->ipv6cnt < 0); kfree_rcu(addr, rcu); @@ -675,7 +679,7 @@ static int ipvlan_add_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr) { struct ipvl_addr *addr; - if (ipvlan_addr_busy(ipvlan, ip4_addr, false)) { + if (ipvlan_addr_busy(ipvlan->port, ip4_addr, false)) { netif_err(ipvlan, ifup, ipvlan->dev, "Failed to add IPv4=%pI4 on %s intf.\n", ip4_addr, ipvlan->dev->name); @@ -688,9 +692,13 @@ static int ipvlan_add_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr) addr->master = ipvlan; memcpy(&addr->ip4addr, ip4_addr, sizeof(struct in_addr)); addr->atype = IPVL_IPV4; - list_add_tail_rcu(&addr->anode, &ipvlan->addrs); + list_add_tail(&addr->anode, &ipvlan->addrs); ipvlan->ipv4cnt++; - ipvlan_ht_addr_add(ipvlan, addr); + /* If the interface is not up, the address will be added to the hash + * list by ipvlan_open. + */ + if (netif_running(ipvlan->dev)) + ipvlan_ht_addr_add(ipvlan, addr); ipvlan_set_broadcast_mac_filter(ipvlan, true); return 0; @@ -700,12 +708,12 @@ static void ipvlan_del_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr) { struct ipvl_addr *addr; - addr = ipvlan_ht_addr_lookup(ipvlan->port, ip4_addr, false); + addr = ipvlan_find_addr(ipvlan, ip4_addr, false); if (!addr) return; ipvlan_ht_addr_del(addr, true); - list_del_rcu(&addr->anode); + list_del(&addr->anode); ipvlan->ipv4cnt--; WARN_ON(ipvlan->ipv4cnt < 0); if (!ipvlan->ipv4cnt) |