diff options
Diffstat (limited to 'net/bridge')
38 files changed, 1154 insertions, 556 deletions
diff --git a/net/bridge/Kconfig b/net/bridge/Kconfig index d115d5cea5b..9190ae462cb 100644 --- a/net/bridge/Kconfig +++ b/net/bridge/Kconfig @@ -33,14 +33,14 @@ config BRIDGE If unsure, say N. config BRIDGE_IGMP_SNOOPING - bool "IGMP snooping" + bool "IGMP/MLD snooping" depends on BRIDGE depends on INET default y ---help--- If you say Y here, then the Ethernet bridge will be able selectively - forward multicast traffic based on IGMP traffic received from each - port. + forward multicast traffic based on IGMP/MLD traffic received from + each port. Say N to exclude this support and reduce the binary size. diff --git a/net/bridge/br.c b/net/bridge/br.c index e1241c76239..76357b54775 100644 --- a/net/bridge/br.c +++ b/net/bridge/br.c @@ -38,7 +38,7 @@ static int __init br_init(void) err = stp_proto_register(&br_stp_proto); if (err < 0) { - printk(KERN_ERR "bridge: can't register sap for STP\n"); + pr_err("bridge: can't register sap for STP\n"); return err; } diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c index 90a9024e5c1..eedf2c94820 100644 --- a/net/bridge/br_device.c +++ b/net/bridge/br_device.c @@ -13,8 +13,11 @@ #include <linux/kernel.h> #include <linux/netdevice.h> +#include <linux/netpoll.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> +#include <linux/list.h> +#include <linux/netfilter_bridge.h> #include <asm/uaccess.h> #include "br_private.h" @@ -26,16 +29,24 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev) const unsigned char *dest = skb->data; struct net_bridge_fdb_entry *dst; struct net_bridge_mdb_entry *mdst; + struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats); - BR_INPUT_SKB_CB(skb)->brdev = dev; +#ifdef CONFIG_BRIDGE_NETFILTER + if (skb->nf_bridge && (skb->nf_bridge->mask & BRNF_BRIDGED_DNAT)) { + br_nf_pre_routing_finish_bridge_slow(skb); + return NETDEV_TX_OK; + } +#endif - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; + brstats->tx_packets++; + brstats->tx_bytes += skb->len; + + BR_INPUT_SKB_CB(skb)->brdev = dev; skb_reset_mac_header(skb); skb_pull(skb, ETH_HLEN); - if (dest[0] & 1) { + if (is_multicast_ether_addr(dest)) { if (br_multicast_rcv(br, NULL, skb)) goto out; @@ -81,6 +92,31 @@ static int br_dev_stop(struct net_device *dev) return 0; } +static struct net_device_stats *br_get_stats(struct net_device *dev) +{ + struct net_bridge *br = netdev_priv(dev); + struct net_device_stats *stats = &dev->stats; + struct br_cpu_netstats sum = { 0 }; + unsigned int cpu; + + for_each_possible_cpu(cpu) { + const struct br_cpu_netstats *bstats + = per_cpu_ptr(br->stats, cpu); + + sum.tx_bytes += bstats->tx_bytes; + sum.tx_packets += bstats->tx_packets; + sum.rx_bytes += bstats->rx_bytes; + sum.rx_packets += bstats->rx_packets; + } + + stats->tx_bytes = sum.tx_bytes; + stats->tx_packets = sum.tx_packets; + stats->rx_bytes = sum.rx_bytes; + stats->rx_packets = sum.rx_packets; + + return stats; +} + static int br_change_mtu(struct net_device *dev, int new_mtu) { struct net_bridge *br = netdev_priv(dev); @@ -162,6 +198,78 @@ static int br_set_tx_csum(struct net_device *dev, u32 data) return 0; } +#ifdef CONFIG_NET_POLL_CONTROLLER +static bool br_devices_support_netpoll(struct net_bridge *br) +{ + struct net_bridge_port *p; + bool ret = true; + int count = 0; + unsigned long flags; + + spin_lock_irqsave(&br->lock, flags); + list_for_each_entry(p, &br->port_list, list) { + count++; + if ((p->dev->priv_flags & IFF_DISABLE_NETPOLL) || + !p->dev->netdev_ops->ndo_poll_controller) + ret = false; + } + spin_unlock_irqrestore(&br->lock, flags); + return count != 0 && ret; +} + +static void br_poll_controller(struct net_device *br_dev) +{ + struct netpoll *np = br_dev->npinfo->netpoll; + + if (np->real_dev != br_dev) + netpoll_poll_dev(np->real_dev); +} + +void br_netpoll_cleanup(struct net_device *dev) +{ + struct net_bridge *br = netdev_priv(dev); + struct net_bridge_port *p, *n; + const struct net_device_ops *ops; + + br->dev->npinfo = NULL; + list_for_each_entry_safe(p, n, &br->port_list, list) { + if (p->dev) { + ops = p->dev->netdev_ops; + if (ops->ndo_netpoll_cleanup) + ops->ndo_netpoll_cleanup(p->dev); + else + p->dev->npinfo = NULL; + } + } +} + +void br_netpoll_disable(struct net_bridge *br, + struct net_device *dev) +{ + if (br_devices_support_netpoll(br)) + br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL; + if (dev->netdev_ops->ndo_netpoll_cleanup) + dev->netdev_ops->ndo_netpoll_cleanup(dev); + else + dev->npinfo = NULL; +} + +void br_netpoll_enable(struct net_bridge *br, + struct net_device *dev) +{ + if (br_devices_support_netpoll(br)) { + br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL; + if (br->dev->npinfo) + dev->npinfo = br->dev->npinfo; + } else if (!(br->dev->priv_flags & IFF_DISABLE_NETPOLL)) { + br->dev->priv_flags |= IFF_DISABLE_NETPOLL; + br_info(br,"new device %s does not support netpoll (disabling)", + dev->name); + } +} + +#endif + static const struct ethtool_ops br_ethtool_ops = { .get_drvinfo = br_getinfo, .get_link = ethtool_op_get_link, @@ -180,19 +288,32 @@ static const struct net_device_ops br_netdev_ops = { .ndo_open = br_dev_open, .ndo_stop = br_dev_stop, .ndo_start_xmit = br_dev_xmit, + .ndo_get_stats = br_get_stats, .ndo_set_mac_address = br_set_mac_address, .ndo_set_multicast_list = br_dev_set_multicast_list, .ndo_change_mtu = br_change_mtu, .ndo_do_ioctl = br_dev_ioctl, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_netpoll_cleanup = br_netpoll_cleanup, + .ndo_poll_controller = br_poll_controller, +#endif }; +static void br_dev_free(struct net_device *dev) +{ + struct net_bridge *br = netdev_priv(dev); + + free_percpu(br->stats); + free_netdev(dev); +} + void br_dev_setup(struct net_device *dev) { random_ether_addr(dev->dev_addr); ether_setup(dev); dev->netdev_ops = &br_netdev_ops; - dev->destructor = free_netdev; + dev->destructor = br_dev_free; SET_ETHTOOL_OPS(dev, &br_ethtool_ops); dev->tx_queue_len = 0; dev->priv_flags = IFF_EBRIDGE; diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index 9101a4e5620..26637439965 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -353,8 +353,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, */ if (fdb->is_local) return 0; - - printk(KERN_WARNING "%s adding interface with same address " + br_warn(br, "adding interface %s with same address " "as a received packet\n", source->dev->name); fdb_delete(fdb); @@ -397,9 +396,9 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, /* attempt to update an entry for a local interface */ if (unlikely(fdb->is_local)) { if (net_ratelimit()) - printk(KERN_WARNING "%s: received packet with " - "own address as source address\n", - source->dev->name); + br_warn(br, "received packet on %s with " + "own address as source address\n", + source->dev->name); } else { /* fastpath: update of existing entry */ fdb->dst = source; diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c index 7a241c39698..a98ef139309 100644 --- a/net/bridge/br_forward.c +++ b/net/bridge/br_forward.c @@ -15,6 +15,7 @@ #include <linux/slab.h> #include <linux/kernel.h> #include <linux/netdevice.h> +#include <linux/netpoll.h> #include <linux/skbuff.h> #include <linux/if_vlan.h> #include <linux/netfilter_bridge.h> @@ -44,13 +45,19 @@ int br_dev_queue_push_xmit(struct sk_buff *skb) if (packet_length(skb) > skb->dev->mtu && !skb_is_gso(skb)) kfree_skb(skb); else { - /* ip_refrag calls ip_fragment, doesn't copy the MAC header. */ + /* ip_fragment doesn't copy the MAC header */ if (nf_bridge_maybe_copy_header(skb)) kfree_skb(skb); else { skb_push(skb, ETH_HLEN); - dev_queue_xmit(skb); +#ifdef CONFIG_NET_POLL_CONTROLLER + if (unlikely(skb->dev->priv_flags & IFF_IN_NETPOLL)) { + netpoll_send_skb(skb->dev->npinfo->netpoll, skb); + skb->dev->priv_flags &= ~IFF_IN_NETPOLL; + } else +#endif + dev_queue_xmit(skb); } } @@ -59,16 +66,30 @@ int br_dev_queue_push_xmit(struct sk_buff *skb) int br_forward_finish(struct sk_buff *skb) { - return NF_HOOK(PF_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev, + return NF_HOOK(NFPROTO_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev, br_dev_queue_push_xmit); } static void __br_deliver(const struct net_bridge_port *to, struct sk_buff *skb) { +#ifdef CONFIG_NET_POLL_CONTROLLER + struct net_bridge *br = to->br; + if (unlikely(br->dev->priv_flags & IFF_IN_NETPOLL)) { + struct netpoll *np; + to->dev->npinfo = skb->dev->npinfo; + np = skb->dev->npinfo->netpoll; + np->real_dev = np->dev = to->dev; + to->dev->priv_flags |= IFF_IN_NETPOLL; + } +#endif skb->dev = to->dev; - NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev, - br_forward_finish); + NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev, + br_forward_finish); +#ifdef CONFIG_NET_POLL_CONTROLLER + if (skb->dev->npinfo) + skb->dev->npinfo->netpoll->dev = br->dev; +#endif } static void __br_forward(const struct net_bridge_port *to, struct sk_buff *skb) @@ -84,8 +105,8 @@ static void __br_forward(const struct net_bridge_port *to, struct sk_buff *skb) skb->dev = to->dev; skb_forward_csum(skb); - NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev, - br_forward_finish); + NF_HOOK(NFPROTO_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev, + br_forward_finish); } /* called with rcu_read_lock */ @@ -208,17 +229,15 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst, { struct net_device *dev = BR_INPUT_SKB_CB(skb)->brdev; struct net_bridge *br = netdev_priv(dev); - struct net_bridge_port *port; - struct net_bridge_port *lport, *rport; - struct net_bridge_port *prev; + struct net_bridge_port *prev = NULL; struct net_bridge_port_group *p; struct hlist_node *rp; - prev = NULL; - - rp = br->router_list.first; - p = mdst ? mdst->ports : NULL; + rp = rcu_dereference(br->router_list.first); + p = mdst ? rcu_dereference(mdst->ports) : NULL; while (p || rp) { + struct net_bridge_port *port, *lport, *rport; + lport = p ? p->port : NULL; rport = rp ? hlist_entry(rp, struct net_bridge_port, rlist) : NULL; @@ -231,9 +250,9 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst, goto out; if ((unsigned long)lport >= (unsigned long)port) - p = p->next; + p = rcu_dereference(p->next); if ((unsigned long)rport >= (unsigned long)port) - rp = rp->next; + rp = rcu_dereference(rp->next); } if (!prev) diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index 0b6b1f2ff7a..18b245e2c00 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -13,6 +13,7 @@ #include <linux/kernel.h> #include <linux/netdevice.h> +#include <linux/netpoll.h> #include <linux/ethtool.h> #include <linux/if_arp.h> #include <linux/module.h> @@ -132,7 +133,7 @@ static void del_nbp(struct net_bridge_port *p) struct net_bridge *br = p->br; struct net_device *dev = p->dev; - sysfs_remove_link(br->ifobj, dev->name); + sysfs_remove_link(br->ifobj, p->dev->name); dev_set_promiscuity(dev, -1); @@ -153,6 +154,7 @@ static void del_nbp(struct net_bridge_port *p) kobject_uevent(&p->kobj, KOBJ_REMOVE); kobject_del(&p->kobj); + br_netpoll_disable(br, dev); call_rcu(&p->rcu, destroy_nbp_rcu); } @@ -165,6 +167,8 @@ static void del_br(struct net_bridge *br, struct list_head *head) del_nbp(p); } + br_netpoll_cleanup(br->dev); + del_timer_sync(&br->gc_timer); br_sysfs_delbr(br->dev); @@ -186,6 +190,12 @@ static struct net_device *new_bridge_dev(struct net *net, const char *name) br = netdev_priv(dev); br->dev = dev; + br->stats = alloc_percpu(struct br_cpu_netstats); + if (!br->stats) { + free_netdev(dev); + return NULL; + } + spin_lock_init(&br->lock); INIT_LIST_HEAD(&br->port_list); spin_lock_init(&br->hash_lock); @@ -438,6 +448,8 @@ int br_add_if(struct net_bridge *br, struct net_device *dev) kobject_uevent(&p->kobj, KOBJ_ADD); + br_netpoll_enable(br, dev); + return 0; err2: br_fdb_delete_by_port(br, p, 1); diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index a82dde2d2ea..d36e700f7a2 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -24,14 +24,16 @@ const u8 br_group_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; static int br_pass_frame_up(struct sk_buff *skb) { struct net_device *indev, *brdev = BR_INPUT_SKB_CB(skb)->brdev; + struct net_bridge *br = netdev_priv(brdev); + struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats); - brdev->stats.rx_packets++; - brdev->stats.rx_bytes += skb->len; + brstats->rx_packets++; + brstats->rx_bytes += skb->len; indev = skb->dev; skb->dev = brdev; - return NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, indev, NULL, + return NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, indev, NULL, netif_receive_skb); } @@ -154,7 +156,7 @@ struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb) if (p->br->stp_enabled == BR_NO_STP && dest[5] == 0) goto forward; - if (NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev, + if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev, NULL, br_handle_local_finish)) return NULL; /* frame consumed by filter */ else @@ -175,7 +177,7 @@ forward: if (!compare_ether_addr(p->br->dev->dev_addr, dest)) skb->pkt_type = PACKET_HOST; - NF_HOOK(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, + NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, br_handle_frame_finish); break; default: diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c index 995afc4b04d..cb43312b846 100644 --- a/net/bridge/br_ioctl.c +++ b/net/bridge/br_ioctl.c @@ -412,6 +412,6 @@ int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) } - pr_debug("Bridge does not support ioctl 0x%x\n", cmd); + br_debug(br, "Bridge does not support ioctl 0x%x\n", cmd); return -EOPNOTSUPP; } diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index eaa0e1bae49..9d21d98ae5f 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -24,51 +24,139 @@ #include <linux/slab.h> #include <linux/timer.h> #include <net/ip.h> +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#include <net/ipv6.h> +#include <net/mld.h> +#include <net/addrconf.h> +#include <net/ip6_checksum.h> +#endif #include "br_private.h" -static inline int br_ip_hash(struct net_bridge_mdb_htable *mdb, __be32 ip) +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +static inline int ipv6_is_local_multicast(const struct in6_addr *addr) { - return jhash_1word(mdb->secret, (u32)ip) & (mdb->max - 1); + if (ipv6_addr_is_multicast(addr) && + IPV6_ADDR_MC_SCOPE(addr) <= IPV6_ADDR_SCOPE_LINKLOCAL) + return 1; + return 0; +} +#endif + +static inline int br_ip_equal(const struct br_ip *a, const struct br_ip *b) +{ + if (a->proto != b->proto) + return 0; + switch (a->proto) { + case htons(ETH_P_IP): + return a->u.ip4 == b->u.ip4; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case htons(ETH_P_IPV6): + return ipv6_addr_equal(&a->u.ip6, &b->u.ip6); +#endif + } + return 0; +} + +static inline int __br_ip4_hash(struct net_bridge_mdb_htable *mdb, __be32 ip) +{ + return jhash_1word(mdb->secret, (__force u32)ip) & (mdb->max - 1); +} + +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +static inline int __br_ip6_hash(struct net_bridge_mdb_htable *mdb, + const struct in6_addr *ip) +{ + return jhash2((__force u32 *)ip->s6_addr32, 4, mdb->secret) & (mdb->max - 1); +} +#endif + +static inline int br_ip_hash(struct net_bridge_mdb_htable *mdb, + struct br_ip *ip) +{ + switch (ip->proto) { + case htons(ETH_P_IP): + return __br_ip4_hash(mdb, ip->u.ip4); +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case htons(ETH_P_IPV6): + return __br_ip6_hash(mdb, &ip->u.ip6); +#endif + } + return 0; } static struct net_bridge_mdb_entry *__br_mdb_ip_get( - struct net_bridge_mdb_htable *mdb, __be32 dst, int hash) + struct net_bridge_mdb_htable *mdb, struct br_ip *dst, int hash) { struct net_bridge_mdb_entry *mp; struct hlist_node *p; hlist_for_each_entry_rcu(mp, p, &mdb->mhash[hash], hlist[mdb->ver]) { - if (dst == mp->addr) + if (br_ip_equal(&mp->addr, dst)) return mp; } return NULL; } -static struct net_bridge_mdb_entry *br_mdb_ip_get( +static struct net_bridge_mdb_entry *br_mdb_ip4_get( struct net_bridge_mdb_htable *mdb, __be32 dst) { - if (!mdb) - return NULL; + struct br_ip br_dst; + + br_dst.u.ip4 = dst; + br_dst.proto = htons(ETH_P_IP); + + return __br_mdb_ip_get(mdb, &br_dst, __br_ip4_hash(mdb, dst)); +} + +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +static struct net_bridge_mdb_entry *br_mdb_ip6_get( + struct net_bridge_mdb_htable *mdb, const struct in6_addr *dst) +{ + struct br_ip br_dst; + + ipv6_addr_copy(&br_dst.u.ip6, dst); + br_dst.proto = htons(ETH_P_IPV6); + return __br_mdb_ip_get(mdb, &br_dst, __br_ip6_hash(mdb, dst)); +} +#endif + +static struct net_bridge_mdb_entry *br_mdb_ip_get( + struct net_bridge_mdb_htable *mdb, struct br_ip *dst) +{ return __br_mdb_ip_get(mdb, dst, br_ip_hash(mdb, dst)); } struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, struct sk_buff *skb) { - if (br->multicast_disabled) + struct net_bridge_mdb_htable *mdb = br->mdb; + struct br_ip ip; + + if (!mdb || br->multicast_disabled) return NULL; + if (BR_INPUT_SKB_CB(skb)->igmp) + return NULL; + + ip.proto = skb->protocol; + switch (skb->protocol) { case htons(ETH_P_IP): - if (BR_INPUT_SKB_CB(skb)->igmp) - break; - return br_mdb_ip_get(br->mdb, ip_hdr(skb)->daddr); + ip.u.ip4 = ip_hdr(skb)->daddr; + break; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case htons(ETH_P_IPV6): + ipv6_addr_copy(&ip.u.ip6, &ipv6_hdr(skb)->daddr); + break; +#endif + default: + return NULL; } - return NULL; + return br_mdb_ip_get(mdb, &ip); } static void br_mdb_free(struct rcu_head *head) @@ -95,7 +183,7 @@ static int br_mdb_copy(struct net_bridge_mdb_htable *new, for (i = 0; i < old->max; i++) hlist_for_each_entry(mp, p, &old->mhash[i], hlist[old->ver]) hlist_add_head(&mp->hlist[new->ver], - &new->mhash[br_ip_hash(new, mp->addr)]); + &new->mhash[br_ip_hash(new, &mp->addr)]); if (!elasticity) return 0; @@ -163,7 +251,7 @@ static void br_multicast_del_pg(struct net_bridge *br, struct net_bridge_port_group *p; struct net_bridge_port_group **pp; - mp = br_mdb_ip_get(mdb, pg->addr); + mp = br_mdb_ip_get(mdb, &pg->addr); if (WARN_ON(!mp)) return; @@ -171,7 +259,7 @@ static void br_multicast_del_pg(struct net_bridge *br, if (p != pg) continue; - *pp = p->next; + rcu_assign_pointer(*pp, p->next); hlist_del_init(&p->mglist); del_timer(&p->timer); del_timer(&p->query_timer); @@ -249,8 +337,8 @@ out: return 0; } -static struct sk_buff *br_multicast_alloc_query(struct net_bridge *br, - __be32 group) +static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br, + __be32 group) { struct sk_buff *skb; struct igmphdr *ih; @@ -314,12 +402,104 @@ out: return skb; } +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br, + struct in6_addr *group) +{ + struct sk_buff *skb; + struct ipv6hdr *ip6h; + struct mld_msg *mldq; + struct ethhdr *eth; + u8 *hopopt; + unsigned long interval; + + skb = netdev_alloc_skb_ip_align(br->dev, sizeof(*eth) + sizeof(*ip6h) + + 8 + sizeof(*mldq)); + if (!skb) + goto out; + + skb->protocol = htons(ETH_P_IPV6); + + /* Ethernet header */ + skb_reset_mac_header(skb); + eth = eth_hdr(skb); + + memcpy(eth->h_source, br->dev->dev_addr, 6); + ipv6_eth_mc_map(group, eth->h_dest); + eth->h_proto = htons(ETH_P_IPV6); + skb_put(skb, sizeof(*eth)); + + /* IPv6 header + HbH option */ + skb_set_network_header(skb, skb->len); + ip6h = ipv6_hdr(skb); + + *(__force __be32 *)ip6h = htonl(0x60000000); + ip6h->payload_len = 8 + sizeof(*mldq); + ip6h->nexthdr = IPPROTO_HOPOPTS; + ip6h->hop_limit = 1; + ipv6_addr_set(&ip6h->saddr, 0, 0, 0, 0); + ipv6_addr_set(&ip6h->daddr, htonl(0xff020000), 0, 0, htonl(1)); + + hopopt = (u8 *)(ip6h + 1); + hopopt[0] = IPPROTO_ICMPV6; /* next hdr */ + hopopt[1] = 0; /* length of HbH */ + hopopt[2] = IPV6_TLV_ROUTERALERT; /* Router Alert */ + hopopt[3] = 2; /* Length of RA Option */ + hopopt[4] = 0; /* Type = 0x0000 (MLD) */ + hopopt[5] = 0; + hopopt[6] = IPV6_TLV_PAD0; /* Pad0 */ + hopopt[7] = IPV6_TLV_PAD0; /* Pad0 */ + + skb_put(skb, sizeof(*ip6h) + 8); + + /* ICMPv6 */ + skb_set_transport_header(skb, skb->len); + mldq = (struct mld_msg *) icmp6_hdr(skb); + + interval = ipv6_addr_any(group) ? br->multicast_last_member_interval : + br->multicast_query_response_interval; + + mldq->mld_type = ICMPV6_MGM_QUERY; + mldq->mld_code = 0; + mldq->mld_cksum = 0; + mldq->mld_maxdelay = htons((u16)jiffies_to_msecs(interval)); + mldq->mld_reserved = 0; + ipv6_addr_copy(&mldq->mld_mca, group); + + /* checksum */ + mldq->mld_cksum = csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr, + sizeof(*mldq), IPPROTO_ICMPV6, + csum_partial(mldq, + sizeof(*mldq), 0)); + skb_put(skb, sizeof(*mldq)); + + __skb_pull(skb, sizeof(*eth)); + +out: + return skb; +} +#endif + +static struct sk_buff *br_multicast_alloc_query(struct net_bridge *br, + struct br_ip *addr) +{ + switch (addr->proto) { + case htons(ETH_P_IP): + return br_ip4_multicast_alloc_query(br, addr->u.ip4); +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case htons(ETH_P_IPV6): + return br_ip6_multicast_alloc_query(br, &addr->u.ip6); +#endif + } + return NULL; +} + static void br_multicast_send_group_query(struct net_bridge_mdb_entry *mp) { struct net_bridge *br = mp->br; struct sk_buff *skb; - skb = br_multicast_alloc_query(br, mp->addr); + skb = br_multicast_alloc_query(br, &mp->addr); if (!skb) goto timer; @@ -353,7 +533,7 @@ static void br_multicast_send_port_group_query(struct net_bridge_port_group *pg) struct net_bridge *br = port->br; struct sk_buff *skb; - skb = br_multicast_alloc_query(br, pg->addr); + skb = br_multicast_alloc_query(br, &pg->addr); if (!skb) goto timer; @@ -383,8 +563,8 @@ out: } static struct net_bridge_mdb_entry *br_multicast_get_group( - struct net_bridge *br, struct net_bridge_port *port, __be32 group, - int hash) + struct net_bridge *br, struct net_bridge_port *port, + struct br_ip *group, int hash) { struct net_bridge_mdb_htable *mdb = br->mdb; struct net_bridge_mdb_entry *mp; @@ -396,9 +576,8 @@ static struct net_bridge_mdb_entry *br_multicast_get_group( hlist_for_each_entry(mp, p, &mdb->mhash[hash], hlist[mdb->ver]) { count++; - if (unlikely(group == mp->addr)) { + if (unlikely(br_ip_equal(group, &mp->addr))) return mp; - } } elasticity = 0; @@ -406,10 +585,9 @@ static struct net_bridge_mdb_entry *br_multicast_get_group( if (unlikely(count > br->hash_elasticity && count)) { if (net_ratelimit()) - printk(KERN_INFO "%s: Multicast hash table " - "chain limit reached: %s\n", - br->dev->name, port ? port->dev->name : - br->dev->name); + br_info(br, "Multicast hash table " + "chain limit reached: %s\n", + port ? port->dev->name : br->dev->name); elasticity = br->hash_elasticity; } @@ -417,11 +595,9 @@ static struct net_bridge_mdb_entry *br_multicast_get_group( if (mdb->size >= max) { max *= 2; if (unlikely(max >= br->hash_max)) { |