diff options
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/br_device.c | 15 | ||||
| -rw-r--r-- | net/bridge/br_forward.c | 3 | ||||
| -rw-r--r-- | net/bridge/br_if.c | 23 | ||||
| -rw-r--r-- | net/bridge/br_input.c | 12 | ||||
| -rw-r--r-- | net/bridge/br_netfilter.c | 38 | ||||
| -rw-r--r-- | net/bridge/br_notify.c | 9 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 1 | ||||
| -rw-r--r-- | net/bridge/br_stp_bpdu.c | 3 | ||||
| -rw-r--r-- | net/bridge/netfilter/ebtables.c | 21 |
9 files changed, 55 insertions, 70 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c index d9b72fde433..f564ee99782 100644 --- a/net/bridge/br_device.c +++ b/net/bridge/br_device.c @@ -21,10 +21,7 @@ static struct net_device_stats *br_dev_get_stats(struct net_device *dev) { - struct net_bridge *br; - - br = dev->priv; - + struct net_bridge *br = netdev_priv(dev); return &br->statistics; } @@ -54,9 +51,11 @@ int br_dev_xmit(struct sk_buff *skb, struct net_device *dev) static int br_dev_open(struct net_device *dev) { - netif_start_queue(dev); + struct net_bridge *br = netdev_priv(dev); - br_stp_enable_bridge(dev->priv); + br_features_recompute(br); + netif_start_queue(dev); + br_stp_enable_bridge(br); return 0; } @@ -67,7 +66,7 @@ static void br_dev_set_multicast_list(struct net_device *dev) static int br_dev_stop(struct net_device *dev) { - br_stp_disable_bridge(dev->priv); + br_stp_disable_bridge(netdev_priv(dev)); netif_stop_queue(dev); @@ -76,7 +75,7 @@ static int br_dev_stop(struct net_device *dev) static int br_change_mtu(struct net_device *dev, int new_mtu) { - if ((new_mtu < 68) || new_mtu > br_min_mtu(dev->priv)) + if (new_mtu < 68 || new_mtu > br_min_mtu(netdev_priv(dev))) return -EINVAL; dev->mtu = new_mtu; diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c index ef9f2095f96..069253f830c 100644 --- a/net/bridge/br_forward.c +++ b/net/bridge/br_forward.c @@ -57,9 +57,6 @@ int br_forward_finish(struct sk_buff *skb) static void __br_deliver(const struct net_bridge_port *to, struct sk_buff *skb) { skb->dev = to->dev; -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug = 0; -#endif NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev, br_forward_finish); } diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index 69872bf3b87..91bb895375f 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -314,6 +314,28 @@ int br_min_mtu(const struct net_bridge *br) return mtu; } +/* + * Recomputes features using slave's features + */ +void br_features_recompute(struct net_bridge *br) +{ + struct net_bridge_port *p; + unsigned long features, checksum; + + features = NETIF_F_SG | NETIF_F_FRAGLIST + | NETIF_F_HIGHDMA | NETIF_F_TSO; + checksum = NETIF_F_IP_CSUM; /* least commmon subset */ + + list_for_each_entry(p, &br->port_list, list) { + if (!(p->dev->features + & (NETIF_F_IP_CSUM|NETIF_F_NO_CSUM|NETIF_F_HW_CSUM))) + checksum = 0; + features &= p->dev->features; + } + + br->dev->features = features | checksum | NETIF_F_LLTX; +} + /* called with RTNL */ int br_add_if(struct net_bridge *br, struct net_device *dev) { @@ -368,6 +390,7 @@ int br_del_if(struct net_bridge *br, struct net_device *dev) spin_lock_bh(&br->lock); br_stp_recalculate_bridge_id(br); + br_features_recompute(br); spin_unlock_bh(&br->lock); return 0; diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 2b1cce46cab..9a45e6279c5 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -23,11 +23,7 @@ const unsigned char bridge_ula[6] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; static int br_pass_frame_up_finish(struct sk_buff *skb) { -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug = 0; -#endif - netif_rx(skb); - + netif_receive_skb(skb); return 0; } @@ -54,6 +50,9 @@ int br_handle_frame_finish(struct sk_buff *skb) struct net_bridge_fdb_entry *dst; int passedup = 0; + /* insert into forwarding database after filtering to avoid spoofing */ + br_fdb_update(p->br, p, eth_hdr(skb)->h_source); + if (br->dev->flags & IFF_PROMISC) { struct sk_buff *skb2; @@ -108,8 +107,7 @@ int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb) if (!is_valid_ether_addr(eth_hdr(skb)->h_source)) goto err; - if (p->state == BR_STATE_LEARNING || - p->state == BR_STATE_FORWARDING) + if (p->state == BR_STATE_LEARNING) br_fdb_update(p->br, p, eth_hdr(skb)->h_source); if (p->br->stp_enabled && diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c index be03d3ad264..03ae4edddac 100644 --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -102,10 +102,6 @@ static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb) { struct nf_bridge_info *nf_bridge = skb->nf_bridge; -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug ^= (1 << NF_BR_PRE_ROUTING); -#endif - if (nf_bridge->mask & BRNF_PKT_TYPE) { skb->pkt_type = PACKET_OTHERHOST; nf_bridge->mask ^= BRNF_PKT_TYPE; @@ -182,10 +178,6 @@ static void __br_dnat_complain(void) * --Bart, 20021007 (updated) */ static int br_nf_pre_routing_finish_bridge(struct sk_buff *skb) { -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug |= (1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_FORWARD); -#endif - if (skb->pkt_type == PACKET_OTHERHOST) { skb->pkt_type = PACKET_HOST; skb->nf_bridge->mask |= BRNF_PKT_TYPE; @@ -207,10 +199,6 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb) struct iphdr *iph = skb->nh.iph; struct nf_bridge_info *nf_bridge = skb->nf_bridge; -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug ^= (1 << NF_BR_PRE_ROUTING); -#endif - if (nf_bridge->mask & BRNF_PKT_TYPE) { skb->pkt_type = PACKET_OTHERHOST; nf_bridge->mask ^= BRNF_PKT_TYPE; @@ -382,9 +370,6 @@ static unsigned int br_nf_pre_routing_ipv6(unsigned int hook, if (hdr->nexthdr == NEXTHDR_HOP && check_hbh_len(skb)) goto inhdr_error; -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug ^= (1 << NF_IP6_PRE_ROUTING); -#endif if ((nf_bridge = nf_bridge_alloc(skb)) == NULL) return NF_DROP; setup_pre_routing(skb); @@ -468,9 +453,6 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb, skb->ip_summed = CHECKSUM_NONE; } -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug ^= (1 << NF_IP_PRE_ROUTING); -#endif if ((nf_bridge = nf_bridge_alloc(skb)) == NULL) return NF_DROP; setup_pre_routing(skb); @@ -517,10 +499,6 @@ static int br_nf_forward_finish(struct sk_buff *skb) struct net_device *in; struct vlan_ethhdr *hdr = vlan_eth_hdr(skb); -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug ^= (1 << NF_BR_FORWARD); -#endif - if (skb->protocol != __constant_htons(ETH_P_ARP) && !IS_VLAN_ARP) { in = nf_bridge->physindev; if (nf_bridge->mask & BRNF_PKT_TYPE) { @@ -566,9 +544,6 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb, (*pskb)->nh.raw += VLAN_HLEN; } -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug ^= (1 << NF_BR_FORWARD); -#endif nf_bridge = skb->nf_bridge; if (skb->pkt_type == PACKET_OTHERHOST) { skb->pkt_type = PACKET_HOST; @@ -605,10 +580,6 @@ static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb, (*pskb)->nh.raw += VLAN_HLEN; } -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug ^= (1 << NF_BR_FORWARD); -#endif - if (skb->nh.arph->ar_pln != 4) { if (IS_VLAN_ARP) { skb_push(*pskb, VLAN_HLEN); @@ -627,9 +598,6 @@ static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb, /* PF_BRIDGE/LOCAL_OUT ***********************************************/ static int br_nf_local_out_finish(struct sk_buff *skb) { -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug &= ~(1 << NF_BR_LOCAL_OUT); -#endif if (skb->protocol == __constant_htons(ETH_P_8021Q)) { skb_push(skb, VLAN_HLEN); skb->nh.raw -= VLAN_HLEN; @@ -731,10 +699,6 @@ static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff **pskb, realoutdev, br_nf_local_out_finish, NF_IP_PRI_BRIDGE_SABOTAGE_FORWARD + 1); } else { -#ifdef CONFIG_NETFILTER_DEBUG - skb->nf_debug ^= (1 << NF_IP_LOCAL_OUT); -#endif - NF_HOOK_THRESH(pf, NF_IP_LOCAL_OUT, skb, realindev, realoutdev, br_nf_local_out_finish, NF_IP_PRI_BRIDGE_SABOTAGE_LOCAL_OUT + 1); @@ -779,8 +743,6 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb, printk(KERN_CRIT "br_netfilter: skb->dst == NULL."); goto print_error; } - - skb->nf_debug ^= (1 << NF_IP_POST_ROUTING); #endif /* We assume any code from br_dev_queue_push_xmit onwards doesn't care diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c index f8fb49e3476..917311c6828 100644 --- a/net/bridge/br_notify.c +++ b/net/bridge/br_notify.c @@ -65,6 +65,15 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v } break; + case NETDEV_FEAT_CHANGE: + if (br->dev->flags & IFF_UP) + br_features_recompute(br); + + /* could do recursive feature change notification + * but who would care?? + */ + break; + case NETDEV_DOWN: if (br->dev->flags & IFF_UP) br_stp_disable_port(p); diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 54d63f1372a..bdf95a74d8c 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -174,6 +174,7 @@ extern int br_add_if(struct net_bridge *br, extern int br_del_if(struct net_bridge *br, struct net_device *dev); extern int br_min_mtu(const struct net_bridge *br); +extern void br_features_recompute(struct net_bridge *br); /* br_input.c */ extern int br_handle_frame_finish(struct sk_buff *skb); diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c index b91a875aca0..d071f1c9ad0 100644 --- a/net/bridge/br_stp_bpdu.c +++ b/net/bridge/br_stp_bpdu.c @@ -140,6 +140,9 @@ int br_stp_handle_bpdu(struct sk_buff *skb) struct net_bridge *br = p->br; unsigned char *buf; + /* insert into forwarding database after filtering to avoid spoofing */ + br_fdb_update(p->br, p, eth_hdr(skb)->h_source); + /* need at least the 802 and STP headers */ if (!pskb_may_pull(skb, sizeof(header)+1) || memcmp(skb->data, header, sizeof(header))) diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index 18ebc664769..c4540144f0f 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -859,8 +859,7 @@ static int translate_table(struct ebt_replace *repl, if (repl->valid_hooks & (1 << i)) if (check_chainloops(newinfo->hook_entry[i], cl_s, udc_cnt, i, newinfo->entries)) { - if (cl_s) - vfree(cl_s); + vfree(cl_s); return -EINVAL; } @@ -883,8 +882,7 @@ static int translate_table(struct ebt_replace *repl, EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size, ebt_cleanup_entry, &i); } - if (cl_s) - vfree(cl_s); + vfree(cl_s); return ret; } @@ -1030,8 +1028,7 @@ static int do_replace(void __user *user, unsigned int len) } vfree(table); - if (counterstmp) - vfree(counterstmp); + vfree(counterstmp); return ret; free_unlock: @@ -1040,8 +1037,7 @@ free_iterate: EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size, ebt_cleanup_entry, NULL); free_counterstmp: - if (counterstmp) - vfree(counterstmp); + vfree(counterstmp); /* can be initialized in translate_table() */ if (newinfo->chainstack) { for (i = 0; i < num_possible_cpus(); i++) @@ -1049,11 +1045,9 @@ free_counterstmp: vfree(newinfo->chainstack); } free_entries: - if (newinfo->entries) - vfree(newinfo->entries); + vfree(newinfo->entries); free_newinfo: - if (newinfo) - vfree(newinfo); + vfree(newinfo); return ret; } @@ -1213,8 +1207,7 @@ void ebt_unregister_table(struct ebt_table *table) down(&ebt_mutex); LIST_DELETE(&ebt_tables, table); up(&ebt_mutex); - if (table->private->entries) - vfree(table->private->entries); + vfree(table->private->entries); if (table->private->chainstack) { for (i = 0; i < num_possible_cpus(); i++) vfree(table->private->chainstack[i]); |