X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=net%2Fcore%2Fdev.c;h=fe10551d3671053ea6d6a6da57de037f43ad78d0;hb=aabb89d6fa4c70d77fe180ee794f857decde4010;hp=f9d90c56b6f0b903f8bc001e2cdc5ee38d6bb9eb;hpb=78d3fd0b7de844a6dad56e9620fc9d2271b32ab9;p=safe%2Fjmp%2Flinux-2.6 diff --git a/net/core/dev.c b/net/core/dev.c index f9d90c5..fe10551 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -126,7 +126,7 @@ #include #include #include -#include +#include #include "net-sysfs.h" @@ -191,7 +191,6 @@ static struct list_head ptype_all __read_mostly; /* Taps */ * semaphore held. */ DEFINE_RWLOCK(dev_base_lock); - EXPORT_SYMBOL(dev_base_lock); #define NETDEV_HASHBITS 8 @@ -248,6 +247,7 @@ static RAW_NOTIFIER_HEAD(netdev_chain); */ DEFINE_PER_CPU(struct softnet_data, softnet_data); +EXPORT_PER_CPU_SYMBOL(softnet_data); #ifdef CONFIG_LOCKDEP /* @@ -269,9 +269,10 @@ static const unsigned short netdev_lock_type[] = ARPHRD_IRDA, ARPHRD_FCPP, ARPHRD_FCAL, ARPHRD_FCPL, ARPHRD_FCFABRIC, ARPHRD_IEEE802_TR, ARPHRD_IEEE80211, ARPHRD_IEEE80211_PRISM, ARPHRD_IEEE80211_RADIOTAP, ARPHRD_PHONET, - ARPHRD_PHONET_PIPE, ARPHRD_VOID, ARPHRD_NONE}; + ARPHRD_PHONET_PIPE, ARPHRD_IEEE802154, + ARPHRD_VOID, ARPHRD_NONE}; -static const char *netdev_lock_name[] = +static const char *const netdev_lock_name[] = {"_xmit_NETROM", "_xmit_ETHER", "_xmit_EETHER", "_xmit_AX25", "_xmit_PRONET", "_xmit_CHAOS", "_xmit_IEEE802", "_xmit_ARCNET", "_xmit_APPLETLK", "_xmit_DLCI", "_xmit_ATM", "_xmit_METRICOM", @@ -286,7 +287,8 @@ static const char *netdev_lock_name[] = "_xmit_IRDA", "_xmit_FCPP", "_xmit_FCAL", "_xmit_FCPL", "_xmit_FCFABRIC", "_xmit_IEEE802_TR", "_xmit_IEEE80211", "_xmit_IEEE80211_PRISM", "_xmit_IEEE80211_RADIOTAP", "_xmit_PHONET", - "_xmit_PHONET_PIPE", "_xmit_VOID", "_xmit_NONE"}; + "_xmit_PHONET_PIPE", "_xmit_IEEE802154", + "_xmit_VOID", "_xmit_NONE"}; static struct lock_class_key netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)]; static struct lock_class_key netdev_addr_lock_key[ARRAY_SIZE(netdev_lock_type)]; @@ -379,6 +381,7 @@ void dev_add_pack(struct packet_type *pt) } spin_unlock_bh(&ptype_lock); } +EXPORT_SYMBOL(dev_add_pack); /** * __dev_remove_pack - remove packet handler @@ -416,6 +419,8 @@ void __dev_remove_pack(struct packet_type *pt) out: spin_unlock_bh(&ptype_lock); } +EXPORT_SYMBOL(__dev_remove_pack); + /** * dev_remove_pack - remove packet handler * @pt: packet type declaration @@ -434,6 +439,7 @@ void dev_remove_pack(struct packet_type *pt) synchronize_net(); } +EXPORT_SYMBOL(dev_remove_pack); /****************************************************************************** @@ -497,6 +503,7 @@ int netdev_boot_setup_check(struct net_device *dev) } return 0; } +EXPORT_SYMBOL(netdev_boot_setup_check); /** @@ -589,6 +596,7 @@ struct net_device *__dev_get_by_name(struct net *net, const char *name) } return NULL; } +EXPORT_SYMBOL(__dev_get_by_name); /** * dev_get_by_name - find a device by its name @@ -613,6 +621,7 @@ struct net_device *dev_get_by_name(struct net *net, const char *name) read_unlock(&dev_base_lock); return dev; } +EXPORT_SYMBOL(dev_get_by_name); /** * __dev_get_by_index - find a device by its ifindex @@ -638,6 +647,7 @@ struct net_device *__dev_get_by_index(struct net *net, int ifindex) } return NULL; } +EXPORT_SYMBOL(__dev_get_by_index); /** @@ -662,6 +672,7 @@ struct net_device *dev_get_by_index(struct net *net, int ifindex) read_unlock(&dev_base_lock); return dev; } +EXPORT_SYMBOL(dev_get_by_index); /** * dev_getbyhwaddr - find a device by its hardware address @@ -691,7 +702,6 @@ struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *h return NULL; } - EXPORT_SYMBOL(dev_getbyhwaddr); struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type) @@ -705,7 +715,6 @@ struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type) return NULL; } - EXPORT_SYMBOL(__dev_getfirstbyhwtype); struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type) @@ -719,7 +728,6 @@ struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type) rtnl_unlock(); return dev; } - EXPORT_SYMBOL(dev_getfirstbyhwtype); /** @@ -734,7 +742,8 @@ EXPORT_SYMBOL(dev_getfirstbyhwtype); * dev_put to indicate they have finished with it. */ -struct net_device * dev_get_by_flags(struct net *net, unsigned short if_flags, unsigned short mask) +struct net_device *dev_get_by_flags(struct net *net, unsigned short if_flags, + unsigned short mask) { struct net_device *dev, *ret; @@ -750,6 +759,7 @@ struct net_device * dev_get_by_flags(struct net *net, unsigned short if_flags, u read_unlock(&dev_base_lock); return ret; } +EXPORT_SYMBOL(dev_get_by_flags); /** * dev_valid_name - check if name is okay for network device @@ -775,6 +785,7 @@ int dev_valid_name(const char *name) } return 1; } +EXPORT_SYMBOL(dev_valid_name); /** * __dev_alloc_name - allocate a name for a device @@ -868,6 +879,7 @@ int dev_alloc_name(struct net_device *dev, const char *name) strlcpy(dev->name, buf, IFNAMSIZ); return ret; } +EXPORT_SYMBOL(dev_alloc_name); /** @@ -904,8 +916,7 @@ int dev_change_name(struct net_device *dev, const char *newname) err = dev_alloc_name(dev, newname); if (err < 0) return err; - } - else if (__dev_get_by_name(net, newname)) + } else if (__dev_get_by_name(net, newname)) return -EEXIST; else strlcpy(dev->name, newname, IFNAMSIZ); @@ -931,14 +942,15 @@ rollback: ret = notifier_to_errno(ret); if (ret) { - if (err) { - printk(KERN_ERR - "%s: name change rollback failed: %d.\n", - dev->name, ret); - } else { + /* err >= 0 after dev_alloc_name() or stores the first errno */ + if (err >= 0) { err = ret; memcpy(dev->name, oldname, IFNAMSIZ); goto rollback; + } else { + printk(KERN_ERR + "%s: name change rollback failed: %d.\n", + dev->name, ret); } } @@ -968,7 +980,7 @@ int dev_set_alias(struct net_device *dev, const char *alias, size_t len) return 0; } - dev->ifalias = krealloc(dev->ifalias, len+1, GFP_KERNEL); + dev->ifalias = krealloc(dev->ifalias, len + 1, GFP_KERNEL); if (!dev->ifalias) return -ENOMEM; @@ -1004,10 +1016,11 @@ void netdev_state_change(struct net_device *dev) rtmsg_ifinfo(RTM_NEWLINK, dev, 0); } } +EXPORT_SYMBOL(netdev_state_change); -void netdev_bonding_change(struct net_device *dev) +void netdev_bonding_change(struct net_device *dev, unsigned long event) { - call_netdevice_notifiers(NETDEV_BONDING_FAILOVER, dev); + call_netdevice_notifiers(event, dev); } EXPORT_SYMBOL(netdev_bonding_change); @@ -1029,9 +1042,10 @@ void dev_load(struct net *net, const char *name) dev = __dev_get_by_name(net, name); read_unlock(&dev_base_lock); - if (!dev && capable(CAP_SYS_MODULE)) + if (!dev && capable(CAP_NET_ADMIN)) request_module("%s", name); } +EXPORT_SYMBOL(dev_load); /** * dev_open - prepare an interface for use. @@ -1048,7 +1062,7 @@ void dev_load(struct net *net, const char *name) int dev_open(struct net_device *dev) { const struct net_device_ops *ops = dev->netdev_ops; - int ret = 0; + int ret; ASSERT_RTNL(); @@ -1065,6 +1079,11 @@ int dev_open(struct net_device *dev) if (!netif_device_present(dev)) return -ENODEV; + ret = call_netdevice_notifiers(NETDEV_PRE_UP, dev); + ret = notifier_to_errno(ret); + if (ret) + return ret; + /* * Call device private open method */ @@ -1111,6 +1130,7 @@ int dev_open(struct net_device *dev) return ret; } +EXPORT_SYMBOL(dev_open); /** * dev_close - shutdown an interface. @@ -1177,6 +1197,7 @@ int dev_close(struct net_device *dev) return 0; } +EXPORT_SYMBOL(dev_close); /** @@ -1272,6 +1293,7 @@ rollback: raw_notifier_chain_unregister(&netdev_chain, nb); goto unlock; } +EXPORT_SYMBOL(register_netdevice_notifier); /** * unregister_netdevice_notifier - unregister a network notifier block @@ -1292,6 +1314,7 @@ int unregister_netdevice_notifier(struct notifier_block *nb) rtnl_unlock(); return err; } +EXPORT_SYMBOL(unregister_netdevice_notifier); /** * call_netdevice_notifiers - call all network notifier blocks @@ -1314,11 +1337,13 @@ void net_enable_timestamp(void) { atomic_inc(&netstamp_needed); } +EXPORT_SYMBOL(net_enable_timestamp); void net_disable_timestamp(void) { atomic_dec(&netstamp_needed); } +EXPORT_SYMBOL(net_disable_timestamp); static inline void net_timestamp(struct sk_buff *skb) { @@ -1352,7 +1377,7 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev) if ((ptype->dev == dev || !ptype->dev) && (ptype->af_packet_priv == NULL || (struct sock *)ptype->af_packet_priv != skb->sk)) { - struct sk_buff *skb2= skb_clone(skb, GFP_ATOMIC); + struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); if (!skb2) break; @@ -1520,6 +1545,7 @@ out_set_summed: out: return ret; } +EXPORT_SYMBOL(skb_checksum_help); /** * skb_gso_segment - Perform segmentation on skb. @@ -1582,7 +1608,6 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features) return segs; } - EXPORT_SYMBOL(skb_gso_segment); /* Take action when hardware reception checksum errors are detected. */ @@ -1693,12 +1718,11 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, * If device doesnt need skb->dst, release it right now while * its hot in this cpu cache */ - if ((dev->priv_flags & IFF_XMIT_DST_RELEASE) && skb->dst) { - dst_release(skb->dst); - skb->dst = NULL; - } + if (dev->priv_flags & IFF_XMIT_DST_RELEASE) + skb_dst_drop(skb); + rc = ops->ndo_start_xmit(skb, dev); - if (rc == 0) + if (rc == NETDEV_TX_OK) txq_trans_update(txq); /* * TODO: if skb_orphan() was called by @@ -1724,7 +1748,7 @@ gso: skb->next = nskb->next; nskb->next = NULL; rc = ops->ndo_start_xmit(nskb, dev); - if (unlikely(rc)) { + if (unlikely(rc != NETDEV_TX_OK)) { nskb->next = skb->next; skb->next = nskb; return rc; @@ -1738,7 +1762,7 @@ gso: out_kfree_skb: kfree_skb(skb); - return 0; + return NETDEV_TX_OK; } static u32 skb_tx_hashrnd; @@ -1749,7 +1773,7 @@ u16 skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb) if (skb_rx_queue_recorded(skb)) { hash = skb_get_rx_queue(skb); - while (unlikely (hash >= dev->real_num_tx_queues)) + while (unlikely(hash >= dev->real_num_tx_queues)) hash -= dev->real_num_tx_queues; return hash; } @@ -1780,6 +1804,40 @@ static struct netdev_queue *dev_pick_tx(struct net_device *dev, return netdev_get_tx_queue(dev, queue_index); } +static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q, + struct net_device *dev, + struct netdev_queue *txq) +{ + spinlock_t *root_lock = qdisc_lock(q); + int rc; + + spin_lock(root_lock); + if (unlikely(test_bit(__QDISC_STATE_DEACTIVATED, &q->state))) { + kfree_skb(skb); + rc = NET_XMIT_DROP; + } else if ((q->flags & TCQ_F_CAN_BYPASS) && !qdisc_qlen(q) && + !test_and_set_bit(__QDISC_STATE_RUNNING, &q->state)) { + /* + * This is a work-conserving queue; there are no old skbs + * waiting to be sent out; and the qdisc is not running - + * xmit the skb directly. + */ + __qdisc_update_bstats(q, skb->len); + if (sch_direct_xmit(skb, q, dev, txq, root_lock)) + __qdisc_run(q); + else + clear_bit(__QDISC_STATE_RUNNING, &q->state); + + rc = NET_XMIT_SUCCESS; + } else { + rc = qdisc_enqueue_root(skb, q); + qdisc_run(q); + } + spin_unlock(root_lock); + + return rc; +} + /** * dev_queue_xmit - transmit a buffer * @skb: buffer to transmit @@ -1816,7 +1874,7 @@ int dev_queue_xmit(struct sk_buff *skb) if (netif_needs_gso(dev, skb)) goto gso; - if (skb_shinfo(skb)->frag_list && + if (skb_has_frags(skb) && !(dev->features & NETIF_F_FRAGLIST) && __skb_linearize(skb)) goto out_kfree_skb; @@ -1850,22 +1908,10 @@ gso: q = rcu_dereference(txq->qdisc); #ifdef CONFIG_NET_CLS_ACT - skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_EGRESS); + skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_EGRESS); #endif if (q->enqueue) { - spinlock_t *root_lock = qdisc_lock(q); - - spin_lock(root_lock); - - if (unlikely(test_bit(__QDISC_STATE_DEACTIVATED, &q->state))) { - kfree_skb(skb); - rc = NET_XMIT_DROP; - } else { - rc = qdisc_enqueue_root(skb, q); - qdisc_run(q); - } - spin_unlock(root_lock); - + rc = __dev_xmit_skb(skb, q, dev, txq); goto out; } @@ -1889,7 +1935,7 @@ gso: HARD_TX_LOCK(dev, txq, cpu); if (!netif_tx_queue_stopped(txq)) { - rc = 0; + rc = NET_XMIT_SUCCESS; if (!dev_hard_start_xmit(skb, dev, txq)) { HARD_TX_UNLOCK(dev, txq); goto out; @@ -1918,6 +1964,7 @@ out: rcu_read_unlock_bh(); return rc; } +EXPORT_SYMBOL(dev_queue_xmit); /*======================================================================= @@ -1984,6 +2031,7 @@ enqueue: kfree_skb(skb); return NET_RX_DROP; } +EXPORT_SYMBOL(netif_rx); int netif_rx_ni(struct sk_buff *skb) { @@ -1997,7 +2045,6 @@ int netif_rx_ni(struct sk_buff *skb) return err; } - EXPORT_SYMBOL(netif_rx_ni); static void net_tx_action(struct softirq_action *h) @@ -2065,11 +2112,13 @@ static inline int deliver_skb(struct sk_buff *skb, } #if defined(CONFIG_BRIDGE) || defined (CONFIG_BRIDGE_MODULE) -/* These hooks defined here for ATM */ -struct net_bridge; -struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, - unsigned char *addr); -void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent) __read_mostly; + +#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) +/* This hook is defined here for ATM LANE */ +int (*br_fdb_test_addr_hook)(struct net_device *dev, + unsigned char *addr) __read_mostly; +EXPORT_SYMBOL_GPL(br_fdb_test_addr_hook); +#endif /* * If bridge module is loaded call bridging hook. @@ -2077,6 +2126,8 @@ void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent) __read_mostly; */ struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p, struct sk_buff *skb) __read_mostly; +EXPORT_SYMBOL_GPL(br_handle_frame_hook); + static inline struct sk_buff *handle_bridge(struct sk_buff *skb, struct packet_type **pt_prev, int *ret, struct net_device *orig_dev) @@ -2238,6 +2289,9 @@ int netif_receive_skb(struct sk_buff *skb) int ret = NET_RX_DROP; __be16 type; + if (!skb->tstamp.tv64) + net_timestamp(skb); + if (skb->vlan_tci && vlan_hwaccel_do_receive(skb)) return NET_RX_SUCCESS; @@ -2245,9 +2299,6 @@ int netif_receive_skb(struct sk_buff *skb) if (netpoll_receive_skb(skb)) return NET_RX_DROP; - if (!skb->tstamp.tv64) - net_timestamp(skb); - if (!skb->iif) skb->iif = skb->dev->ifindex; @@ -2300,8 +2351,6 @@ ncls: if (!skb) goto out; - skb_orphan(skb); - type = skb->protocol; list_for_each_entry_rcu(ptype, &ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) { @@ -2328,6 +2377,7 @@ out: rcu_read_unlock(); return ret; } +EXPORT_SYMBOL(netif_receive_skb); /* Network device is going away, flush any packets still pending */ static void flush_backlog(void *arg) @@ -2403,7 +2453,7 @@ int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb) if (!(skb->dev->features & NETIF_F_GRO)) goto normal; - if (skb_is_gso(skb) || skb_shinfo(skb)->frag_list) + if (skb_is_gso(skb) || skb_has_frags(skb)) goto normal; rcu_read_lock(); @@ -2452,10 +2502,25 @@ int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb) ret = GRO_HELD; pull: - if (unlikely(!pskb_may_pull(skb, skb_gro_offset(skb)))) { - if (napi->gro_list == skb) - napi->gro_list = skb->next; - ret = GRO_DROP; + if (skb_headlen(skb) < skb_gro_offset(skb)) { + int grow = skb_gro_offset(skb) - skb_headlen(skb); + + BUG_ON(skb->end - skb->tail < grow); + + memcpy(skb_tail_pointer(skb), NAPI_GRO_CB(skb)->frag0, grow); + + skb->tail += grow; + skb->data_len -= grow; + + skb_shinfo(skb)->frags[0].page_offset += grow; + skb_shinfo(skb)->frags[0].size -= grow; + + if (unlikely(!skb_shinfo(skb)->frags[0].size)) { + put_page(skb_shinfo(skb)->frags[0].page); + memmove(skb_shinfo(skb)->frags, + skb_shinfo(skb)->frags + 1, + --skb_shinfo(skb)->nr_frags); + } } ok: @@ -2509,12 +2574,15 @@ void skb_gro_reset_offset(struct sk_buff *skb) { NAPI_GRO_CB(skb)->data_offset = 0; NAPI_GRO_CB(skb)->frag0 = NULL; + NAPI_GRO_CB(skb)->frag0_len = 0; if (skb->mac_header == skb->tail && - !PageHighMem(skb_shinfo(skb)->frags[0].page)) + !PageHighMem(skb_shinfo(skb)->frags[0].page)) { NAPI_GRO_CB(skb)->frag0 = page_address(skb_shinfo(skb)->frags[0].page) + skb_shinfo(skb)->frags[0].page_offset; + NAPI_GRO_CB(skb)->frag0_len = skb_shinfo(skb)->frags[0].size; + } } EXPORT_SYMBOL(skb_gro_reset_offset); @@ -2587,17 +2655,24 @@ struct sk_buff *napi_frags_skb(struct napi_struct *napi) { struct sk_buff *skb = napi->skb; struct ethhdr *eth; + unsigned int hlen; + unsigned int off; napi->skb = NULL; skb_reset_mac_header(skb); skb_gro_reset_offset(skb); - eth = skb_gro_header(skb, sizeof(*eth)); - if (!eth) { - napi_reuse_skb(napi, skb); - skb = NULL; - goto out; + off = skb_gro_offset(skb); + hlen = off + sizeof(*eth); + eth = skb_gro_header_fast(skb, off); + if (skb_gro_header_hard(skb, hlen)) { + eth = skb_gro_header_slow(skb, hlen, off); + if (unlikely(!eth)) { + napi_reuse_skb(napi, skb); + skb = NULL; + goto out; + } } skb_gro_pull(skb, sizeof(*eth)); @@ -2790,9 +2865,11 @@ static void net_rx_action(struct softirq_action *h) * move the instance around on the list at-will. */ if (unlikely(work == weight)) { - if (unlikely(napi_disable_pending(n))) - __napi_complete(n); - else + if (unlikely(napi_disable_pending(n))) { + local_irq_enable(); + napi_complete(n); + local_irq_disable(); + } else list_move_tail(&n->poll_list, list); } @@ -2817,7 +2894,7 @@ softnet_break: goto out; } -static gifconf_func_t * gifconf_list [NPROTO]; +static gifconf_func_t *gifconf_list[NPROTO]; /** * register_gifconf - register a SIOCGIF handler @@ -2828,13 +2905,14 @@ static gifconf_func_t * gifconf_list [NPROTO]; * that is passed must not be freed or reused until it has been replaced * by another handler. */ -int register_gifconf(unsigned int family, gifconf_func_t * gifconf) +int register_gifconf(unsigned int family, gifconf_func_t *gifconf) { if (family >= NPROTO) return -EINVAL; gifconf_list[family] = gifconf; return 0; } +EXPORT_SYMBOL(register_gifconf); /* @@ -3045,7 +3123,7 @@ static int softnet_seq_show(struct seq_file *seq, void *v) seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n", s->total, s->dropped, s->time_squeeze, 0, 0, 0, 0, 0, /* was fastroute */ - s->cpu_collision ); + s->cpu_collision); return 0; } @@ -3281,6 +3359,7 @@ int netdev_set_master(struct net_device *slave, struct net_device *master) rtmsg_ifinfo(RTM_NEWLINK, slave, IFF_SLAVE); return 0; } +EXPORT_SYMBOL(netdev_set_master); static void dev_change_rx_flags(struct net_device *dev, int flags) { @@ -3359,6 +3438,7 @@ int dev_set_promiscuity(struct net_device *dev, int inc) dev_set_rx_mode(dev); return err; } +EXPORT_SYMBOL(dev_set_promiscuity); /** * dev_set_allmulti - update allmulti count on a device @@ -3402,6 +3482,7 @@ int dev_set_allmulti(struct net_device *dev, int inc) } return 0; } +EXPORT_SYMBOL(dev_set_allmulti); /* * Upload unicast and multicast address lists to device and @@ -3426,10 +3507,10 @@ void __dev_set_rx_mode(struct net_device *dev) /* Unicast addresses changes may only happen under the rtnl, * therefore calling __dev_set_promiscuity here is safe. */ - if (dev->uc_count > 0 && !dev->uc_promisc) { + if (dev->uc.count > 0 && !dev->uc_promisc) { __dev_set_promiscuity(dev, 1); dev->uc_promisc = 1; - } else if (dev->uc_count == 0 && dev->uc_promisc) { + } else if (dev->uc.count == 0 && dev->uc_promisc) { __dev_set_promiscuity(dev, -1); dev->uc_promisc = 0; } @@ -3448,7 +3529,7 @@ void dev_set_rx_mode(struct net_device *dev) /* hw addresses list handling functions */ -static int __hw_addr_add(struct list_head *list, unsigned char *addr, +static int __hw_addr_add(struct netdev_hw_addr_list *list, unsigned char *addr, int addr_len, unsigned char addr_type) { struct netdev_hw_addr *ha; @@ -3457,6 +3538,15 @@ static int __hw_addr_add(struct list_head *list, unsigned char *addr, if (addr_len > MAX_ADDR_LEN) return -EINVAL; + list_for_each_entry(ha, &list->list, list) { + if (!memcmp(ha->addr, addr, addr_len) && + ha->type == addr_type) { + ha->refcount++; + return 0; + } + } + + alloc_size = sizeof(*ha); if (alloc_size < L1_CACHE_BYTES) alloc_size = L1_CACHE_BYTES; @@ -3465,7 +3555,10 @@ static int __hw_addr_add(struct list_head *list, unsigned char *addr, return -ENOMEM; memcpy(ha->addr, addr, addr_len); ha->type = addr_type; - list_add_tail_rcu(&ha->list, list); + ha->refcount = 1; + ha->synced = false; + list_add_tail_rcu(&ha->list, &list->list); + list->count++; return 0; } @@ -3477,35 +3570,35 @@ static void ha_rcu_free(struct rcu_head *head) kfree(ha); } -static int __hw_addr_del_ii(struct list_head *list, unsigned char *addr, - int addr_len, unsigned char addr_type, - int ignore_index) +static int __hw_addr_del(struct netdev_hw_addr_list *list, unsigned char *addr, + int addr_len, unsigned char addr_type) { struct netdev_hw_addr *ha; - int i = 0; - list_for_each_entry(ha, list, list) { - if (i++ != ignore_index && - !memcmp(ha->addr, addr, addr_len) && + list_for_each_entry(ha, &list->list, list) { + if (!memcmp(ha->addr, addr, addr_len) && (ha->type == addr_type || !addr_type)) { + if (--ha->refcount) + return 0; list_del_rcu(&ha->list); call_rcu(&ha->rcu_head, ha_rcu_free); + list->count--; return 0; } } return -ENOENT; } -static int __hw_addr_add_multiple_ii(struct list_head *to_list, - struct list_head *from_list, - int addr_len, unsigned char addr_type, - int ignore_index) +static int __hw_addr_add_multiple(struct netdev_hw_addr_list *to_list, + struct netdev_hw_addr_list *from_list, + int addr_len, + unsigned char addr_type) { int err; struct netdev_hw_addr *ha, *ha2; unsigned char type; - list_for_each_entry(ha, from_list, list) { + list_for_each_entry(ha, &from_list->list, list) { type = addr_type ? addr_type : ha->type; err = __hw_addr_add(to_list, ha->addr, addr_len, type); if (err) @@ -3514,39 +3607,84 @@ static int __hw_addr_add_multiple_ii(struct list_head *to_list, return 0; unroll: - list_for_each_entry(ha2, from_list, list) { + list_for_each_entry(ha2, &from_list->list, list) { if (ha2 == ha) break; type = addr_type ? addr_type : ha2->type; - __hw_addr_del_ii(to_list, ha2->addr, addr_len, type, - ignore_index); + __hw_addr_del(to_list, ha2->addr, addr_len, type); } return err; } -static void __hw_addr_del_multiple_ii(struct list_head *to_list, - struct list_head *from_list, - int addr_len, unsigned char addr_type, - int ignore_index) +static void __hw_addr_del_multiple(struct netdev_hw_addr_list *to_list, + struct netdev_hw_addr_list *from_list, + int addr_len, + unsigned char addr_type) { struct netdev_hw_addr *ha; unsigned char type; - list_for_each_entry(ha, from_list, list) { + list_for_each_entry(ha, &from_list->list, list) { type = addr_type ? addr_type : ha->type; - __hw_addr_del_ii(to_list, ha->addr, addr_len, addr_type, - ignore_index); + __hw_addr_del(to_list, ha->addr, addr_len, addr_type); } } -static void __hw_addr_flush(struct list_head *list) +static int __hw_addr_sync(struct netdev_hw_addr_list *to_list, + struct netdev_hw_addr_list *from_list, + int addr_len) { + int err = 0; struct netdev_hw_addr *ha, *tmp; - list_for_each_entry_safe(ha, tmp, list, list) { + list_for_each_entry_safe(ha, tmp, &from_list->list, list) { + if (!ha->synced) { + err = __hw_addr_add(to_list, ha->addr, + addr_len, ha->type); + if (err) + break; + ha->synced = true; + ha->refcount++; + } else if (ha->refcount == 1) { + __hw_addr_del(to_list, ha->addr, addr_len, ha->type); + __hw_addr_del(from_list, ha->addr, addr_len, ha->type); + } + } + return err; +} + +static void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, + struct netdev_hw_addr_list *from_list, + int addr_len) +{ + struct netdev_hw_addr *ha, *tmp; + + list_for_each_entry_safe(ha, tmp, &from_list->list, list) { + if (ha->synced) { + __hw_addr_del(to_list, ha->addr, + addr_len, ha->type); + ha->synced = false; + __hw_addr_del(from_list, ha->addr, + addr_len, ha->type); + } + } +} + +static void __hw_addr_flush(struct netdev_hw_addr_list *list) +{ + struct netdev_hw_addr *ha, *tmp; + + list_for_each_entry_safe(ha, tmp, &list->list, list) { list_del_rcu(&ha->list); call_rcu(&ha->rcu_head, ha_rcu_free); } + list->count = 0; +} + +static void __hw_addr_init(struct netdev_hw_addr_list *list) +{ + INIT_LIST_HEAD(&list->list); + list->count = 0; } /* Device addresses handling functions */ @@ -3555,7 +3693,7 @@ static void dev_addr_flush(struct net_device *dev) { /* rtnl_mutex must be held here */ - __hw_addr_flush(&dev->dev_addr_list); + __hw_addr_flush(&dev->dev_addrs); dev->dev_addr = NULL; } @@ -3567,16 +3705,16 @@ static int dev_addr_init(struct net_device *dev) /* rtnl_mutex must be held here */ - INIT_LIST_HEAD(&dev->dev_addr_list); - memset(addr, 0, sizeof(*addr)); - err = __hw_addr_add(&dev->dev_addr_list, addr, sizeof(*addr), + __hw_addr_init(&dev->dev_addrs); + memset(addr, 0, sizeof(addr)); + err = __hw_addr_add(&dev->dev_addrs, addr, sizeof(addr), NETDEV_HW_ADDR_T_LAN); if (!err) { /* * Get the first (previously created) address from the list * and set dev_addr pointer to this location. */ - ha = list_first_entry(&dev->dev_addr_list, + ha = list_first_entry(&dev->dev_addrs.list, struct netdev_hw_addr, list); dev->dev_addr = ha->addr; } @@ -3601,8 +3739,7 @@ int dev_addr_add(struct net_device *dev, unsigned char *addr, ASSERT_RTNL(); - err = __hw_addr_add(&dev->dev_addr_list, addr, dev->addr_len, - addr_type); + err = __hw_addr_add(&dev->dev_addrs, addr, dev->addr_len, addr_type); if (!err) call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); return err; @@ -3624,11 +3761,21 @@ int dev_addr_del(struct net_device *dev, unsigned char *addr, unsigned char addr_type) { int err; + struct netdev_hw_addr *ha; ASSERT_RTNL(); - err = __hw_addr_del_ii(&dev->dev_addr_list, addr, dev->addr_len, - addr_type, 0); + /* + * We can not remove the first address from the list because + * dev->dev_addr points to that. + */ + ha = list_first_entry(&dev->dev_addrs.list, + struct netdev_hw_addr, list); + if (ha->addr == dev->dev_addr && ha->refcount == 1) + return -ENOENT; + + err = __hw_addr_del(&dev->dev_addrs, addr, dev->addr_len, + addr_type); if (!err) call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); return err; @@ -3655,9 +3802,8 @@ int dev_addr_add_multiple(struct net_device *to_dev, if (from_dev->addr_len != to_dev->addr_len) return -EINVAL; - err = __hw_addr_add_multiple_ii(&to_dev->dev_addr_list, - &from_dev->dev_addr_list, - to_dev->addr_len, addr_type, 0); + err = __hw_addr_add_multiple(&to_dev->dev_addrs, &from_dev->dev_addrs, + to_dev->addr_len, addr_type); if (!err) call_netdevice_notifiers(NETDEV_CHANGEADDR, to_dev); return err; @@ -3682,15 +3828,14 @@ int dev_addr_del_multiple(struct net_device *to_dev, if (from_dev->addr_len != to_dev->addr_len) return -EINVAL; - __hw_addr_del_multiple_ii(&to_dev->dev_addr_list, - &from_dev->dev_addr_list, - to_dev->addr_len, addr_type, 0); + __hw_addr_del_multiple(&to_dev->dev_addrs, &from_dev->dev_addrs, + to_dev->addr_len, addr_type); call_netdevice_notifiers(NETDEV_CHANGEADDR, to_dev); return 0; } EXPORT_SYMBOL(dev_addr_del_multiple); -/* unicast and multicast addresses handling functions */ +/* multicast addresses handling functions */ int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int glbl) @@ -3754,21 +3899,21 @@ int __dev_addr_add(struct dev_addr_list **list, int *count, * dev_unicast_delete - Release secondary unicast address. * @dev: device * @addr: address to delete - * @alen: length of @addr * * Release reference to a secondary unicast address and remove it * from the device if the reference count drops to zero. * * The caller must hold the rtnl_mutex. */ -int dev_unicast_delete(struct net_device *dev, void *addr, int alen) +int dev_unicast_delete(struct net_device *dev, void *addr) { int err; ASSERT_RTNL(); netif_addr_lock_bh(dev); - err = __dev_addr_delete(&dev->uc_list, &dev->uc_count, addr, alen, 0); + err = __hw_addr_del(&dev->uc, addr, dev->addr_len, + NETDEV_HW_ADDR_T_UNICAST); if (!err) __dev_set_rx_mode(dev); netif_addr_unlock_bh(dev); @@ -3780,21 +3925,21 @@ EXPORT_SYMBOL(dev_unicast_delete); * dev_unicast_add - add a secondary unicast address * @dev: device * @addr: address to add - * @alen: length of @addr * * Add a secondary unicast address to the device or increase * the reference count if it already exists. * * The caller must hold the rtnl_mutex. */ -int dev_unicast_add(struct net_device *dev, void *addr, int alen) +int dev_unicast_add(struct net_device *dev, void *addr) { int err; ASSERT_RTNL(); netif_addr_lock_bh(dev); - err = __dev_addr_add(&dev->uc_list, &dev->uc_count, addr, alen, 0); + err = __hw_addr_add(&dev->uc, addr, dev->addr_len, + NETDEV_HW_ADDR_T_UNICAST); if (!err) __dev_set_rx_mode(dev); netif_addr_unlock_bh(dev); @@ -3828,6 +3973,7 @@ int __dev_addr_sync(struct dev_addr_list **to, int *to_count, } return err; } +EXPORT_SYMBOL_GPL(__dev_addr_sync); void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count) @@ -3847,6 +3993,7 @@ void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, da = next; } } +EXPORT_SYMBOL_GPL(__dev_addr_unsync); /** * dev_unicast_sync - Synchronize device's unicast list to another device @@ -3864,9 +4011,11 @@ int dev_unicast_sync(struct net_device *to, struct net_device *from) { int err = 0; + if (to->addr_len != from->addr_len) + return -EINVAL; + netif_addr_lock_bh(to); - err = __dev_addr_sync(&to->uc_list, &to->uc_count, - &from->uc_list, &from->uc_count); + err = __hw_addr_sync(&to->uc, &from->uc, to->addr_len); if (!err) __dev_set_rx_mode(to); netif_addr_unlock_bh(to); @@ -3885,18 +4034,31 @@ EXPORT_SYMBOL(dev_unicast_sync); */ void dev_unicast_unsync(struct net_device *to, struct net_device *from) { + if (to->addr_len != from->addr_len) + return; + netif_addr_lock_bh(from); netif_addr_lock(to); - - __dev_addr_unsync(&to->uc_list, &to->uc_count, - &from->uc_list, &from->uc_count); + __hw_addr_unsync(&to->uc, &from->uc, to->addr_len); __dev_set_rx_mode(to); - netif_addr_unlock(to); netif_addr_unlock_bh(from); } EXPORT_SYMBOL(dev_unicast_unsync); +static void dev_unicast_flush(struct net_device *dev) +{ + netif_addr_lock_bh(dev); + __hw_addr_flush(&dev->uc); + netif_addr_unlock_bh(dev); +} + +static void dev_unicast_init(struct net_device *dev) +{ + __hw_addr_init(&dev->uc); +} + + static void __dev_addr_discard(struct dev_addr_list **list) { struct dev_addr_list *tmp; @@ -3915,9 +4077,6 @@ static void dev_addr_discard(struct net_device *dev) { netif_addr_lock_bh(dev); - __dev_addr_discard(&dev->uc_list); - dev->uc_count = 0; - __dev_addr_discard(&dev->mc_list); dev->mc_count = 0; @@ -3953,6 +4112,7 @@ unsigned dev_get_flags(const struct net_device *dev) return flags; } +EXPORT_SYMBOL(dev_get_flags); /** * dev_change_flags - change device settings @@ -4003,12 +4163,13 @@ int dev_change_flags(struct net_device *dev, unsigned flags) } if (dev->flags & IFF_UP && - ((old_flags ^ dev->flags) &~ (IFF_UP | IFF_PROMISC | IFF_ALLMULTI | + ((old_flags ^ dev->flags) & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | IFF_VOLATILE))) call_netdevice_notifiers(NETDEV_CHANGE, dev); if ((flags ^ dev->gflags) & IFF_PROMISC) { - int inc = (flags & IFF_PROMISC) ? +1 : -1; + int inc = (flags & IFF_PROMISC) ? 1 : -1; + dev->gflags ^= IFF_PROMISC; dev_set_promiscuity(dev, inc); } @@ -4018,7 +4179,8 @@ int dev_change_flags(struct net_device *dev, unsigned flags) IFF_ALLMULTI is requested not asking us and not reporting. */ if ((flags ^ dev->gflags) & IFF_ALLMULTI) { - int inc = (flags & IFF_ALLMULTI) ? +1 : -1; + int inc = (flags & IFF_ALLMULTI) ? 1 : -1; + dev->gflags ^= IFF_ALLMULTI; dev_set_allmulti(dev, inc); } @@ -4030,6 +4192,7 @@ int dev_change_flags(struct net_device *dev, unsigned flags) return ret; } +EXPORT_SYMBOL(dev_change_flags); /** * dev_set_mtu - Change maximum transfer unit @@ -4063,6 +4226,7 @@ int dev_set_mtu(struct net_device *dev, int new_mtu) call_netdevice_notifiers(NETDEV_CHANGEMTU, dev); return err; } +EXPORT_SYMBOL(dev_set_mtu); /** * dev_set_mac_address - Change Media Access Control Address @@ -4087,6 +4251,7 @@ int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa) call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); return err; } +EXPORT_SYMBOL(dev_set_mac_address); /* * Perform the SIOCxIFxxx calls, inside read_lock(dev_base_lock) @@ -4100,56 +4265,56 @@ static int dev_ifsioc_locked(struct net *net, struct ifreq *ifr, unsigned int cm return -ENODEV; switch (cmd) { - case SIOCGIFFLAGS: /* Get interface flags */ - ifr->ifr_flags = dev_get_flags(dev); - return 0; + case SIOCGIFFLAGS: /* Get interface flags */ + ifr->ifr_flags = (short) dev_get_flags(dev); + return 0; - case SIOCGIFMETRIC: /* Get the metric on the interface - (currently unused) */ - ifr->ifr_metric = 0; - return 0; + case SIOCGIFMETRIC: /* Get the metric on the interface + (currently unused) */ + ifr->ifr_metric = 0; + return 0; - case SIOCGIFMTU: /* Get the MTU of a device */ - ifr->ifr_mtu = dev->mtu; - return 0; + case SIOCGIFMTU: /* Get the MTU of a device */ + ifr->ifr_mtu = dev->mtu; + return 0; - case SIOCGIFHWADDR: - if (!dev->addr_len) - memset(ifr->ifr_hwaddr.sa_data, 0, sizeof ifr->ifr_hwaddr.sa_data); - else - memcpy(ifr->ifr_hwaddr.sa_data, dev->dev_addr, - min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len)); - ifr->ifr_hwaddr.sa_family = dev->type; - return 0; + case SIOCGIFHWADDR: + if (!dev->addr_len) + memset(ifr->ifr_hwaddr.sa_data, 0, sizeof ifr->ifr_hwaddr.sa_data); + else + memcpy(ifr->ifr_hwaddr.sa_data, dev->dev_addr, + min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len)); + ifr->ifr_hwaddr.sa_family = dev->type; + return 0; - case SIOCGIFSLAVE: - err = -EINVAL; - break; + case SIOCGIFSLAVE: + err = -EINVAL; + break; - case SIOCGIFMAP: - ifr->ifr_map.mem_start = dev->mem_start; - ifr->ifr_map.mem_end = dev->mem_end; - ifr->ifr_map.base_addr = dev->base_addr; - ifr->ifr_map.irq = dev->irq; - ifr->ifr_map.dma = dev->dma; - ifr->ifr_map.port = dev->if_port; - return 0; + case SIOCGIFMAP: + ifr->ifr_map.mem_start = dev->mem_start; + ifr->ifr_map.mem_end = dev->mem_end; + ifr->ifr_map.base_addr = dev->base_addr; + ifr->ifr_map.irq = dev->irq; + ifr->ifr_map.dma = dev->dma; + ifr->ifr_map.port = dev->if_port; + return 0; - case SIOCGIFINDEX: - ifr->ifr_ifindex = dev->ifindex; - return 0; + case SIOCGIFINDEX: + ifr->ifr_ifindex = dev->ifindex; + return 0; - case SIOCGIFTXQLEN: - ifr->ifr_qlen = dev->tx_queue_len; - return 0; + case SIOCGIFTXQLEN: + ifr->ifr_qlen = dev->tx_queue_len; + return 0; - default: - /* dev_ioctl() should ensure this case - * is never reached - */ - WARN_ON(1); - err = -EINVAL; - break; + default: + /* dev_ioctl() should ensure this case + * is never reached + */ + WARN_ON(1); + err = -EINVAL; + break; } return err; @@ -4170,92 +4335,91 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd) ops = dev->netdev_ops; switch (cmd) { - case SIOCSIFFLAGS: /* Set interface flags */ - return dev_change_flags(dev, ifr->ifr_flags); - - case SIOCSIFMETRIC: /* Set the metric on the interface - (currently unused) */ - return -EOPNOTSUPP; + case SIOCSIFFLAGS: /* Set interface flags */ + return dev_change_flags(dev, ifr->ifr_flags); - case SIOCSIFMTU: /* Set the MTU of a device */ - return dev_set_mtu(dev, ifr->ifr_mtu); - - case SIOCSIFHWADDR: - return dev_set_mac_address(dev, &ifr->ifr_hwaddr); + case SIOCSIFMETRIC: /* Set the metric on the interface + (currently unused) */ + return -EOPNOTSUPP; - case SIOCSIFHWBROADCAST: - if (ifr->ifr_hwaddr.sa_family != dev->type) - return -EINVAL; - memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data, - min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len)); - call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); - return 0; + case SIOCSIFMTU: /* Set the MTU of a device */ + return dev_set_mtu(dev, ifr->ifr_mtu); - case SIOCSIFMAP: - if (ops->ndo_set_config) { - if (!netif_device_present(dev)) - return -ENODEV; - return ops->ndo_set_config(dev, &ifr->ifr_map); - } - return -EOPNOTSUPP; + case SIOCSIFHWADDR: + return dev_set_mac_address(dev, &ifr->ifr_hwaddr); - case SIOCADDMULTI: - if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) || - ifr->ifr_hwaddr.sa_family != AF_UNSPEC) - return -EINVAL; - if (!netif_device_present(dev)) - return -ENODEV; - return dev_mc_add(dev, ifr->ifr_hwaddr.sa_data, - dev->addr_len, 1); + case SIOCSIFHWBROADCAST: + if (ifr->ifr_hwaddr.sa_family != dev->type) + return -EINVAL; + memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data, + min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len)); + call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); + return 0; - case SIOCDELMULTI: - if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) || - ifr->ifr_hwaddr.sa_family != AF_UNSPEC) - return -EINVAL; + case SIOCSIFMAP: + if (ops->ndo_set_config) { if (!netif_device_present(dev)) return -ENODEV; - return dev_mc_delete(dev, ifr->ifr_hwaddr.sa_data, - dev->addr_len, 1); + return ops->ndo_set_config(dev, &ifr->ifr_map); + } + return -EOPNOTSUPP; - case SIOCSIFTXQLEN: - if (ifr->ifr_qlen < 0) - return -EINVAL; - dev->tx_queue_len = ifr->ifr_qlen; - return 0; + case SIOCADDMULTI: + if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) || + ifr->ifr_hwaddr.sa_family != AF_UNSPEC) + return -EINVAL; + if (!netif_device_present(dev)) + return -ENODEV; + return dev_mc_add(dev, ifr->ifr_hwaddr.sa_data, + dev->addr_len, 1); + + case SIOCDELMULTI: + if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) || + ifr->ifr_hwaddr.sa_family != AF_UNSPEC) + return -EINVAL; + if (!netif_device_present(dev)) + return -ENODEV; + return dev_mc_delete(dev, ifr->ifr_hwaddr.sa_data, + dev->addr_len, 1); - case SIOCSIFNAME: - ifr->ifr_newname[IFNAMSIZ-1] = '\0'; - return dev_change_name(dev, ifr->ifr_newname); + case SIOCSIFTXQLEN: + if (ifr->ifr_qlen < 0) + return -EINVAL; + dev->tx_queue_len = ifr->ifr_qlen; + return 0; - /* - * Unknown or private ioctl - */ + case SIOCSIFNAME: + ifr->ifr_newname[IFNAMSIZ-1] = '\0'; + return dev_change_name(dev, ifr->ifr_newname); - default: - if ((cmd >= SIOCDEVPRIVATE && - cmd <= SIOCDEVPRIVATE + 15) || - cmd == SIOCBONDENSLAVE || - cmd == SIOCBONDRELEASE || - cmd == SIOCBONDSETHWADDR || - cmd == SIOCBONDSLAVEINFOQUERY || - cmd == SIOCBONDINFOQUERY || - cmd == SIOCBONDCHANGEACTIVE || - cmd == SIOCGMIIPHY || - cmd == SIOCGMIIREG || - cmd == SIOCSMIIREG || - cmd == SIOCBRADDIF || - cmd == SIOCBRDELIF || - cmd == SIOCSHWTSTAMP || - cmd == SIOCWANDEV) { - err = -EOPNOTSUPP; - if (ops->ndo_do_ioctl) { - if (netif_device_present(dev)) - err = ops->ndo_do_ioctl(dev, ifr, cmd); - else - err = -ENODEV; - } - } else - err = -EINVAL; + /* + * Unknown or private ioctl + */ + default: + if ((cmd >= SIOCDEVPRIVATE && + cmd <= SIOCDEVPRIVATE + 15) || + cmd == SIOCBONDENSLAVE || + cmd == SIOCBONDRELEASE || + cmd == SIOCBONDSETHWADDR || + cmd == SIOCBONDSLAVEINFOQUERY || + cmd == SIOCBONDINFOQUERY || + cmd == SIOCBONDCHANGEACTIVE || + cmd == SIOCGMIIPHY || + cmd == SIOCGMIIREG || + cmd == SIOCSMIIREG || + cmd == SIOCBRADDIF || + cmd == SIOCBRDELIF || + cmd == SIOCSHWTSTAMP || + cmd == SIOCWANDEV) { + err = -EOPNOTSUPP; + if (ops->ndo_do_ioctl) { + if (netif_device_present(dev)) + err = ops->ndo_do_ioctl(dev, ifr, cmd); + else + err = -ENODEV; + } + } else + err = -EINVAL; } return err; @@ -4312,135 +4476,135 @@ int dev_ioctl(struct net *net, unsigned int cmd, void __user *arg) */ switch (cmd) { - /* - * These ioctl calls: - * - can be done by all. - * - atomic and do not require locking. - * - return a value - */ - case SIOCGIFFLAGS: - case SIOCGIFMETRIC: - case SIOCGIFMTU: - case SIOCGIFHWADDR: - case SIOCGIFSLAVE: - case SIOCGIFMAP: - case SIOCGIFINDEX: - case SIOCGIFTXQLEN: - dev_load(net, ifr.ifr_name); - read_lock(&dev_base_lock); - ret = dev_ifsioc_locked(net, &ifr, cmd); - read_unlock(&dev_base_lock); - if (!ret) { - if (colon) - *colon = ':'; - if (copy_to_user(arg, &ifr, - sizeof(struct ifreq))) - ret = -EFAULT; - } - return ret; + /* + * These ioctl calls: + * - can be done by all. + * - atomic and do not require locking. + * - return a value + */ + case SIOCGIFFLAGS: + case SIOCGIFMETRIC: + case SIOCGIFMTU: + case SIOCGIFHWADDR: + case SIOCGIFSLAVE: + case SIOCGIFMAP: + case SIOCGIFINDEX: + case SIOCGIFTXQLEN: + dev_load(net, ifr.ifr_name); + read_lock(&dev_base_lock); + ret = dev_ifsioc_locked(net, &ifr, cmd); + read_unlock(&dev_base_lock); + if (!ret) { + if (colon) + *colon = ':'; + if (copy_to_user(arg, &ifr, + sizeof(struct ifreq))) + ret = -EFAULT; + } + return ret; - case SIOCETHTOOL: - dev_load(net, ifr.ifr_name); - rtnl_lock(); - ret = dev_ethtool(net, &ifr); - rtnl_unlock(); - if (!ret) { - if (colon) - *colon = ':'; - if (copy_to_user(arg, &ifr, - sizeof(struct ifreq))) - ret = -EFAULT; - } - return ret; + case SIOCETHTOOL: + dev_load(net, ifr.ifr_name); + rtnl_lock(); + ret = dev_ethtool(net, &ifr); + rtnl_unlock(); + if (!ret) { + if (colon) + *colon = ':'; + if (copy_to_user(arg, &ifr, + sizeof(struct ifreq))) + ret = -EFAULT; + } + return ret; - /* - * These ioctl calls: - * - require superuser power. - * - require strict serialization. - * - return a value - */ - case SIOCGMIIPHY: - case SIOCGMIIREG: - case SIOCSIFNAME: - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - dev_load(net, ifr.ifr_name); - rtnl_lock(); - ret = dev_ifsioc(net, &ifr, cmd); - rtnl_unlock(); - if (!ret) { - if (colon) - *colon = ':'; - if (copy_to_user(arg, &ifr, - sizeof(struct ifreq))) - ret = -EFAULT; - } - return ret; + /* + * These ioctl calls: + * - require superuser power. + * - require strict serialization. + * - return a value + */ + case SIOCGMIIPHY: + case SIOCGMIIREG: + case SIOCSIFNAME: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + dev_load(net, ifr.ifr_name); + rtnl_lock(); + ret = dev_ifsioc(net, &ifr, cmd); + rtnl_unlock(); + if (!ret) { + if (colon) + *colon = ':'; + if (copy_to_user(arg, &ifr, + sizeof(struct ifreq))) + ret = -EFAULT; + } + return ret; - /* - * These ioctl calls: - * - require superuser power. - * - require strict serialization. - * - do not return a value - */ - case SIOCSIFFLAGS: - case SIOCSIFMETRIC: - case SIOCSIFMTU: - case SIOCSIFMAP: - case SIOCSIFHWADDR: - case SIOCSIFSLAVE: - case SIOCADDMULTI: - case SIOCDELMULTI: - case SIOCSIFHWBROADCAST: - case SIOCSIFTXQLEN: - case SIOCSMIIREG: - case SIOCBONDENSLAVE: - case SIOCBONDRELEASE: - case SIOCBONDSETHWADDR: - case SIOCBONDCHANGEACTIVE: - case SIOCBRADDIF: - case SIOCBRDELIF: - case SIOCSHWTSTAMP: - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - /* fall through */ - case SIOCBONDSLAVEINFOQUERY: - case SIOCBONDINFOQUERY: + /* + * These ioctl calls: + * - require superuser power. + * - require strict serialization. + * - do not return a value + */ + case SIOCSIFFLAGS: + case SIOCSIFMETRIC: + case SIOCSIFMTU: + case SIOCSIFMAP: + case SIOCSIFHWADDR: + case SIOCSIFSLAVE: + case SIOCADDMULTI: + case SIOCDELMULTI: + case SIOCSIFHWBROADCAST: + case SIOCSIFTXQLEN: + case SIOCSMIIREG: + case SIOCBONDENSLAVE: + case SIOCBONDRELEASE: + case SIOCBONDSETHWADDR: + case SIOCBONDCHANGEACTIVE: + case SIOCBRADDIF: + case SIOCBRDELIF: + case SIOCSHWTSTAMP: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + /* fall through */ + case SIOCBONDSLAVEINFOQUERY: + case SIOCBONDINFOQUERY: + dev_load(net, ifr.ifr_name); + rtnl_lock(); + ret = dev_ifsioc(net, &ifr, cmd); + rtnl_unlock(); + return ret; + + case SIOCGIFMEM: + /* Get the per device memory space. We can add this but + * currently do not support it */ + case SIOCSIFMEM: + /* Set the per device memory buffer space. + * Not applicable in our case */ + case SIOCSIFLINK: + return -EINVAL; + + /* + * Unknown or private ioctl. + */ + default: + if (cmd == SIOCWANDEV || + (cmd >= SIOCDEVPRIVATE && + cmd <= SIOCDEVPRIVATE + 15)) { dev_load(net, ifr.ifr_name); rtnl_lock(); ret = dev_ifsioc(net, &ifr, cmd); rtnl_unlock(); + if (!ret && copy_to_user(arg, &ifr, + sizeof(struct ifreq))) + ret = -EFAULT; return ret; - - case SIOCGIFMEM: - /* Get the per device memory space. We can add this but - * currently do not support it */ - case SIOCSIFMEM: - /* Set the per device memory buffer space. - * Not applicable in our case */ - case SIOCSIFLINK: - return -EINVAL; - - /* - * Unknown or private ioctl. - */ - default: - if (cmd == SIOCWANDEV || - (cmd >= SIOCDEVPRIVATE && - cmd <= SIOCDEVPRIVATE + 15)) { - dev_load(net, ifr.ifr_name); - rtnl_lock(); - ret = dev_ifsioc(net, &ifr, cmd); - rtnl_unlock(); - if (!ret && copy_to_user(arg, &ifr, - sizeof(struct ifreq))) - ret = -EFAULT; - return ret; - } - /* Take care of Wireless Extensions */ - if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) - return wext_handle_ioctl(net, &ifr, cmd, arg); - return -EINVAL; + } + /* Take care of Wireless Extensions */ + if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) + return wext_handle_ioctl(net, &ifr, cmd, arg); + return -EINVAL; } } @@ -4510,6 +4674,7 @@ static void rollback_registered(struct net_device *dev) /* * Flush the unicast and multicast chains */ + dev_unicast_flush(dev); dev_addr_discard(dev); if (dev->netdev_ops->ndo_uninit) @@ -4704,6 +4869,7 @@ err_uninit: dev->netdev_ops->ndo_uninit(dev); goto out; } +EXPORT_SYMBOL(register_netdevice); /** * init_dummy_netdev - init a dummy network device for NAPI @@ -4963,18 +5129,18 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, struct netdev_queue *tx; struct net_device *dev; size_t alloc_size; - void *p; + struct net_device *p; BUG_ON(strlen(name) >= sizeof(dev->name)); alloc_size = sizeof(struct net_device); if (sizeof_priv) { /* ensure 32-byte alignment of private area */ - alloc_size = (alloc_size + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST; + alloc_size = ALIGN(alloc_size, NETDEV_ALIGN); alloc_size += sizeof_priv; } /* ensure 32-byte alignment of whole construct */ - alloc_size += NETDEV_ALIGN_CONST; + alloc_size += NETDEV_ALIGN - 1; p = kzalloc(alloc_size, GFP_KERNEL); if (!p) { @@ -4989,13 +5155,14 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, goto free_p; } - dev = (struct net_device *) - (((long)p + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); + dev = PTR_ALIGN(p, NETDEV_ALIGN); dev->padded = (char *)dev - (char *)p; if (dev_addr_init(dev)) goto free_tx; + dev_unicast_init(dev); + dev_net_set(dev, &init_net); dev->_tx = tx; @@ -5055,6 +5222,7 @@ void free_netdev(struct net_device *dev) /* will free via device release */ put_device(&dev->dev); } +EXPORT_SYMBOL(free_netdev); /** * synchronize_net - Synchronize with packet receive processing @@ -5067,6 +5235,7 @@ void synchronize_net(void) might_sleep(); synchronize_rcu(); } +EXPORT_SYMBOL(synchronize_net); /** * unregister_netdevice - remove device from the kernel @@ -5087,6 +5256,7 @@ void unregister_netdevice(struct net_device *dev) /* Finish processing unregister after unlock */ net_set_todo(dev); } +EXPORT_SYMBOL(unregister_netdevice); /** * unregister_netdev - remove device from the kernel @@ -5105,7 +5275,6 @@ void unregister_netdev(struct net_device *dev) unregister_netdevice(dev); rtnl_unlock(); } - EXPORT_SYMBOL(unregister_netdev); /** @@ -5199,6 +5368,7 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char /* * Flush the unicast and multicast chains */ + dev_unicast_flush(dev); dev_addr_discard(dev); netdev_unregister_kobject(dev); @@ -5233,6 +5403,7 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char out: return err; } +EXPORT_SYMBOL_GPL(dev_change_net_namespace); static int dev_cpu_callback(struct notifier_block *nfb, unsigned long action, @@ -5293,7 +5464,7 @@ unsigned long netdev_increment_features(unsigned long all, unsigned long one, unsigned long mask) { /* If device needs checksumming, downgrade to it. */ - if (all & NETIF_F_NO_CSUM && !(one & NETIF_F_NO_CSUM)) + if (all & NETIF_F_NO_CSUM && !(one & NETIF_F_NO_CSUM)) all ^= NETIF_F_NO_CSUM | (one & NETIF_F_ALL_CSUM); else if (mask & NETIF_F_ALL_CSUM) { /* If one device supports v4/v6 checksumming, set for all. */ @@ -5519,47 +5690,3 @@ static int __init initialize_hashrnd(void) late_initcall_sync(initialize_hashrnd); -EXPORT_SYMBOL(__dev_get_by_index); -EXPORT_SYMBOL(__dev_get_by_name); -EXPORT_SYMBOL(__dev_remove_pack); -EXPORT_SYMBOL(dev_valid_name); -EXPORT_SYMBOL(dev_add_pack); -EXPORT_SYMBOL(dev_alloc_name); -EXPORT_SYMBOL(dev_close); -EXPORT_SYMBOL(dev_get_by_flags); -EXPORT_SYMBOL(dev_get_by_index); -EXPORT_SYMBOL(dev_get_by_name); -EXPORT_SYMBOL(dev_open); -EXPORT_SYMBOL(dev_queue_xmit); -EXPORT_SYMBOL(dev_remove_pack); -EXPORT_SYMBOL(dev_set_allmulti); -EXPORT_SYMBOL(dev_set_promiscuity); -EXPORT_SYMBOL(dev_change_flags); -EXPORT_SYMBOL(dev_set_mtu); -EXPORT_SYMBOL(dev_set_mac_address); -EXPORT_SYMBOL(free_netdev); -EXPORT_SYMBOL(netdev_boot_setup_check); -EXPORT_SYMBOL(netdev_set_master); -EXPORT_SYMBOL(netdev_state_change); -EXPORT_SYMBOL(netif_receive_skb); -EXPORT_SYMBOL(netif_rx); -EXPORT_SYMBOL(register_gifconf); -EXPORT_SYMBOL(register_netdevice); -EXPORT_SYMBOL(register_netdevice_notifier); -EXPORT_SYMBOL(skb_checksum_help); -EXPORT_SYMBOL(synchronize_net); -EXPORT_SYMBOL(unregister_netdevice); -EXPORT_SYMBOL(unregister_netdevice_notifier); -EXPORT_SYMBOL(net_enable_timestamp); -EXPORT_SYMBOL(net_disable_timestamp); -EXPORT_SYMBOL(dev_get_flags); - -#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) -EXPORT_SYMBOL(br_handle_frame_hook); -EXPORT_SYMBOL(br_fdb_get_hook); -EXPORT_SYMBOL(br_fdb_put_hook); -#endif - -EXPORT_SYMBOL(dev_load); - -EXPORT_PER_CPU_SYMBOL(softnet_data);