diff options
Diffstat (limited to 'net')
62 files changed, 1607 insertions, 870 deletions
diff --git a/net/802/fddi.c b/net/802/fddi.c index 539e6064e6d4..3ef0ab0a543a 100644 --- a/net/802/fddi.c +++ b/net/802/fddi.c @@ -185,10 +185,6 @@ static const struct header_ops fddi_header_ops = { static void fddi_setup(struct net_device *dev) { dev->header_ops = &fddi_header_ops; -#ifdef CONFIG_COMPAT_NET_DEV_OPS - dev->change_mtu = fddi_change_mtu, -#endif - dev->type = ARPHRD_FDDI; dev->hard_header_len = FDDI_K_SNAP_HLEN+3; /* Assume 802.2 SNAP hdr len + 3 pad bytes */ dev->mtu = FDDI_K_SNAP_DLEN; /* Assume max payload of 802.2 SNAP frame */ diff --git a/net/802/hippi.c b/net/802/hippi.c index 313b9ebf92ee..cd3e8e929529 100644 --- a/net/802/hippi.c +++ b/net/802/hippi.c @@ -193,11 +193,6 @@ static const struct header_ops hippi_header_ops = { static void hippi_setup(struct net_device *dev) { -#ifdef CONFIG_COMPAT_NET_DEV_OPS - dev->change_mtu = hippi_change_mtu; - dev->set_mac_address = hippi_mac_addr; - dev->neigh_setup = hippi_neigh_setup_dev; -#endif dev->header_ops = &hippi_header_ops; /* diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index ff7572ac5481..1e2ad4c7c59b 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -644,7 +644,6 @@ static int vlan_dev_init(struct net_device *dev) dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; dev->netdev_ops = &vlan_netdev_ops; } - netdev_resync_ops(dev); if (is_vlan_dev(real_dev)) subclass = 1; diff --git a/net/appletalk/dev.c b/net/appletalk/dev.c index 72277d70c980..6c8016f61866 100644 --- a/net/appletalk/dev.c +++ b/net/appletalk/dev.c @@ -9,21 +9,10 @@ #include <linux/if_arp.h> #include <linux/if_ltalk.h> -#ifdef CONFIG_COMPAT_NET_DEV_OPS -static int ltalk_change_mtu(struct net_device *dev, int mtu) -{ - return -EINVAL; -} -#endif - static void ltalk_setup(struct net_device *dev) { /* Fill in the fields of the device structure with localtalk-generic values. */ -#ifdef CONFIG_COMPAT_NET_DEV_OPS - dev->change_mtu = ltalk_change_mtu; -#endif - dev->type = ARPHRD_LOCALTLK; dev->hard_header_len = LTALK_HLEN; dev->mtu = LTALK_MTU; diff --git a/net/atm/br2684.c b/net/atm/br2684.c index 3100a8940afc..bfa8fa9894fc 100644 --- a/net/atm/br2684.c +++ b/net/atm/br2684.c @@ -445,9 +445,10 @@ free_skb: */ static int br2684_regvcc(struct atm_vcc *atmvcc, void __user * arg) { + struct sk_buff_head queue; int err; struct br2684_vcc *brvcc; - struct sk_buff *skb; + struct sk_buff *skb, *tmp; struct sk_buff_head *rq; struct br2684_dev *brdev; struct net_device *net_dev; @@ -505,29 +506,20 @@ static int br2684_regvcc(struct atm_vcc *atmvcc, void __user * arg) barrier(); atmvcc->push = br2684_push; + __skb_queue_head_init(&queue); rq = &sk_atm(atmvcc)->sk_receive_queue; spin_lock_irqsave(&rq->lock, flags); - if (skb_queue_empty(rq)) { - skb = NULL; - } else { - /* NULL terminate the list. */ - rq->prev->next = NULL; - skb = rq->next; - } - rq->prev = rq->next = (struct sk_buff *)rq; - rq->qlen = 0; + skb_queue_splice_init(rq, &queue); spin_unlock_irqrestore(&rq->lock, flags); - while (skb) { - struct sk_buff *next = skb->next; + skb_queue_walk_safe(&queue, skb, tmp) { + struct net_device *dev = skb->dev; - skb->next = skb->prev = NULL; - br2684_push(atmvcc, skb); - skb->dev->stats.rx_bytes -= skb->len; - skb->dev->stats.rx_packets--; + dev->stats.rx_bytes -= skb->len; + dev->stats.rx_packets--; - skb = next; + br2684_push(atmvcc, skb); } __module_get(THIS_MODULE); return 0; diff --git a/net/atm/clip.c b/net/atm/clip.c index 3dc0a3a42a57..5597b87b9e64 100644 --- a/net/atm/clip.c +++ b/net/atm/clip.c @@ -445,9 +445,9 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev) static int clip_mkip(struct atm_vcc *vcc, int timeout) { + struct sk_buff_head *rq, queue; struct clip_vcc *clip_vcc; - struct sk_buff *skb; - struct sk_buff_head *rq; + struct sk_buff *skb, *tmp; unsigned long flags; if (!vcc->push) @@ -469,39 +469,28 @@ static int clip_mkip(struct atm_vcc *vcc, int timeout) vcc->push = clip_push; vcc->pop = clip_pop; + __skb_queue_head_init(&queue); rq = &sk_atm(vcc)->sk_receive_queue; spin_lock_irqsave(&rq->lock, flags); - if (skb_queue_empty(rq)) { - skb = NULL; - } else { - /* NULL terminate the list. */ - rq->prev->next = NULL; - skb = rq->next; - } - rq->prev = rq->next = (struct sk_buff *)rq; - rq->qlen = 0; + skb_queue_splice_init(rq, &queue); spin_unlock_irqrestore(&rq->lock, flags); /* re-process everything received between connection setup and MKIP */ - while (skb) { - struct sk_buff *next = skb->next; - - skb->next = skb->prev = NULL; + skb_queue_walk_safe(&queue, skb, tmp) { if (!clip_devs) { atm_return(vcc, skb->truesize); kfree_skb(skb); } else { + struct net_device *dev = skb->dev; unsigned int len = skb->len; skb_get(skb); clip_push(vcc, skb); - skb->dev->stats.rx_packets--; - skb->dev->stats.rx_bytes -= len; + dev->stats.rx_packets--; + dev->stats.rx_bytes -= len; kfree_skb(skb); } - - skb = next; } return 0; } diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index a48f5efdb6bf..cb3e97b93aeb 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -398,7 +398,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, if (unlikely(fdb->is_local)) { if (net_ratelimit()) printk(KERN_WARNING "%s: received packet with " - " own address as source address\n", + "own address as source address\n", source->dev->name); } else { /* fastpath: update of existing entry */ diff --git a/net/core/dev.c b/net/core/dev.c index 3942266d1f6c..32ceee17896e 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1698,6 +1698,8 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, skb->dst = NULL; } rc = ops->ndo_start_xmit(skb, dev); + if (rc == 0) + txq_trans_update(txq); /* * TODO: if skb_orphan() was called by * dev->hard_start_xmit() (for example, the unmodified @@ -1727,6 +1729,7 @@ gso: skb->next = nskb; return rc; } + txq_trans_update(txq); if (unlikely(netif_tx_queue_stopped(txq) && skb->next)) return NETDEV_TX_BUSY; } while (skb->next); @@ -2387,21 +2390,6 @@ void napi_gro_flush(struct napi_struct *napi) } EXPORT_SYMBOL(napi_gro_flush); -void *skb_gro_header(struct sk_buff *skb, unsigned int hlen) -{ - unsigned int offset = skb_gro_offset(skb); - - hlen += offset; - if (unlikely(skb_headlen(skb) || - skb_shinfo(skb)->frags[0].size < hlen || - PageHighMem(skb_shinfo(skb)->frags[0].page))) - return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL; - - return page_address(skb_shinfo(skb)->frags[0].page) + - skb_shinfo(skb)->frags[0].page_offset + offset; -} -EXPORT_SYMBOL(skb_gro_header); - int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb) { struct sk_buff **pp = NULL; @@ -2464,10 +2452,25 @@ 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: @@ -2517,6 +2520,22 @@ int napi_skb_finish(int ret, struct sk_buff *skb) } EXPORT_SYMBOL(napi_skb_finish); +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)) { + 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); + int napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb) { skb_gro_reset_offset(skb); @@ -2586,17 +2605,24 @@ 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)); @@ -4580,39 +4606,6 @@ unsigned long netdev_fix_features(unsigned long features, const char *name) } EXPORT_SYMBOL(netdev_fix_features); -/* Some devices need to (re-)set their netdev_ops inside - * ->init() or similar. If that happens, we have to setup - * the compat pointers again. - */ -void netdev_resync_ops(struct net_device *dev) -{ -#ifdef CONFIG_COMPAT_NET_DEV_OPS - const struct net_device_ops *ops = dev->netdev_ops; - - dev->init = ops->ndo_init; - dev->uninit = ops->ndo_uninit; - dev->open = ops->ndo_open; - dev->change_rx_flags = ops->ndo_change_rx_flags; - dev->set_rx_mode = ops->ndo_set_rx_mode; - dev->set_multicast_list = ops->ndo_set_multicast_list; - dev->set_mac_address = ops->ndo_set_mac_address; - dev->validate_addr = ops->ndo_validate_addr; - dev->do_ioctl = ops->ndo_do_ioctl; - dev->set_config = ops->ndo_set_config; - dev->change_mtu = ops->ndo_change_mtu; - dev->neigh_setup = ops->ndo_neigh_setup; - dev->tx_timeout = ops->ndo_tx_timeout; - dev->get_stats = ops->ndo_get_stats; - dev->vlan_rx_register = ops->ndo_vlan_rx_register; - dev->vlan_rx_add_vid = ops->ndo_vlan_rx_add_vid; - dev->vlan_rx_kill_vid = ops->ndo_vlan_rx_kill_vid; -#ifdef CONFIG_NET_POLL_CONTROLLER - dev->poll_controller = ops->ndo_poll_controller; -#endif -#endif -} -EXPORT_SYMBOL(netdev_resync_ops); - /** * register_netdevice - register a network device * @dev: device to register @@ -4652,23 +4645,6 @@ int register_netdevice(struct net_device *dev) dev->iflink = -1; -#ifdef CONFIG_COMPAT_NET_DEV_OPS - /* Netdevice_ops API compatibility support. - * This is temporary until all network devices are converted. - */ - if (dev->netdev_ops) { - netdev_resync_ops(dev); - } else { - char drivername[64]; - pr_info("%s (%s): not using net_device_ops yet\n", - dev->name, netdev_drivername(dev, drivername, 64)); - - /* This works only because net_device_ops and the - compatibility structure are the same. */ - dev->netdev_ops = (void *) &(dev->init); - } -#endif - /* Init, if this function is available */ if (dev->netdev_ops->ndo_init) { ret = dev->netdev_ops->ndo_init(dev); @@ -5012,18 +4988,18 @@ 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) { @@ -5038,8 +5014,7 @@ 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)) diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c index 6d62d4618cfc..78e5bfc454ae 100644 --- a/net/core/gen_estimator.c +++ b/net/core/gen_estimator.c @@ -128,12 +128,12 @@ static void est_timer(unsigned long arg) npackets = e->bstats->packets; brate = (nbytes - e->last_bytes)<<(7 - idx); e->last_bytes = nbytes; - e->avbps += ((s64)(brate - e->avbps)) >> e->ewma_log; + e->avbps += (brate >> e->ewma_log) - (e->avbps >> e->ewma_log); e->rate_est->bps = (e->avbps+0xF)>>5; rate = (npackets - e->last_packets)<<(12 - idx); e->last_packets = npackets; - e->avpps += ((long)rate - (long)e->avpps) >> e->ewma_log; + e->avpps += (rate >> e->ewma_log) - (e->avpps >> e->ewma_log); e->rate_est->pps = (e->avpps+0x1FF)>>10; skip: read_unlock(&est_lock); diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index b9641e816eee..3994680c08b9 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -499,7 +499,6 @@ int netdev_register_kobject(struct net_device *net) dev->platform_data = net; dev->groups = groups; - BUILD_BUG_ON(BUS_ID_SIZE < IFNAMSIZ); dev_set_name(dev, "%s", net->name); #ifdef CONFIG_SYSFS diff --git a/net/core/netpoll.c b/net/core/netpoll.c index 67b4f3e3d4a5..7ab31a7576a1 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -302,8 +302,11 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb) for (tries = jiffies_to_usecs(1)/USEC_PER_POLL; tries > 0; --tries) { if (__netif_tx_trylock(txq)) { - if (!netif_tx_queue_stopped(txq)) + if (!netif_tx_queue_stopped(txq)) { status = ops->ndo_start_xmit(skb, dev); + if (status == NETDEV_TX_OK) + txq_trans_update(txq); + } __netif_tx_unlock(txq); if (status == NETDEV_TX_OK) diff --git a/net/core/pktgen.c b/net/core/pktgen.c index 3779c1438c11..b8ccd3c88d63 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -2447,7 +2447,7 @@ static inline void free_SAs(struct pktgen_dev *pkt_dev) if (pkt_dev->cflows) { /* let go of the SAs if we have them */ int i = 0; - for (; i < pkt_dev->nflows; i++){ + for (; i < pkt_dev->cflows; i++) { struct xfrm_state *x = pkt_dev->flows[i].x; if (x) { xfrm_state_put(x); @@ -3438,6 +3438,7 @@ static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev) retry_now: ret = (*xmit)(pkt_dev->skb, odev); if (likely(ret == NETDEV_TX_OK)) { + txq_trans_update(txq); pkt_dev->last_ok = 1; pkt_dev->sofar++; pkt_dev->seq_num++; diff --git a/net/core/skbuff.c b/net/core/skbuff.c index d152394b2611..8e815e685f28 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -526,8 +526,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old) new->sp = secpath_get(old->sp); #endif memcpy(new->cb, old->cb, sizeof(old->cb)); - new->csum_start = old->csum_start; - new->csum_offset = old->csum_offset; + new->csum = old->csum; new->local_df = old->local_df; new->pkt_type = old->pkt_type; new->ip_summed = old->ip_summed; @@ -538,6 +537,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old) #endif new->protocol = old->protocol; new->mark = old->mark; + new->iif = old->iif; __nf_copy(new, old); #if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \ defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE) @@ -550,10 +550,18 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old) #endif #endif new->vlan_tci = old->vlan_tci; +#if defined(CONFIG_MAC80211) || defined(CONFIG_MAC80211_MODULE) + new->do_not_encrypt = old->do_not_encrypt; + new->requeue = old->requeue; +#endif skb_copy_secmark(new, old); } +/* + * You should not add any new code to this function. Add it to + * __copy_skb_header above instead. + */ static struct sk_buff *__skb_clone(struct sk_buff *n, struct sk_buff *skb) { #define C(x) n->x = skb->x @@ -569,16 +577,11 @@ static struct sk_buff *__skb_clone(struct sk_buff *n, struct sk_buff *skb) n->cloned = 1; n->nohdr = 0; n->destructor = NULL; - C(iif); C(tail); C(end); C(head); C(data); C(truesize); -#if defined(CONFIG_MAC80211) || defined(CONFIG_MAC80211_MODULE) - C(do_not_encrypt); - C(requeue); -#endif atomic_set(&n->users, 1); atomic_inc(&(skb_shinfo(skb)->dataref)); @@ -2288,7 +2291,7 @@ unsigned int skb_seq_read(unsigned int consumed, const u8 **data, next_skb: block_limit = skb_headlen(st->cur_skb) + st->stepped_offset; - if (abs_offset < block_limit) { + if (abs_offset < block_limit && !st->frag_data) { *data = st->cur_skb->data + (abs_offset - st->stepped_offset); return block_limit - abs_offset; } @@ -2661,30 +2664,40 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) { struct sk_buff *p = *head; struct sk_buff *nskb; + struct skb_shared_info *skbinfo = skb_shinfo(skb); + struct skb_shared_info *pinfo = skb_shinfo(p); unsigned int headroom; unsigned int len = skb_gro_len(skb); + unsigned int offset = skb_gro_offset(skb); + unsigned int headlen = skb_headlen(skb); if (p->len + len >= 65536) return -E2BIG; - if (skb_shinfo(p)->frag_list) + if (pinfo->frag_list) goto merge; - else if (skb_headlen(skb) <= skb_gro_offset(skb)) { - if (skb_shinfo(p)->nr_frags + skb_shinfo(skb)->nr_frags > - MAX_SKB_FRAGS) + else if (headlen <= offset) { + skb_frag_t *frag; + skb_frag_t *frag2; + int i = skbinfo->nr_frags; + int nr_frags = pinfo->nr_frags + i; + + offset -= headlen; + + if (nr_frags > MAX_SKB_FRAGS) return -E2BIG; - skb_shinfo(skb)->frags[0].page_offset += - skb_gro_offset(skb) - skb_headlen(skb); - skb_shinfo(skb)->frags[0].size -= - skb_gro_offset(skb) - skb_headlen(skb); + pinfo->nr_frags = nr_frags; + skbinfo->nr_frags = 0; - memcpy(skb_shinfo(p)->frags + skb_shinfo(p)->nr_frags, - skb_shinfo(skb)->frags, - skb_shinfo(skb)->nr_frags * sizeof(skb_frag_t)); + frag = pinfo->frags + nr_frags; + frag2 = skbinfo->frags + i; + do { + *--frag = *--frag2; + } while (--i); - skb_shinfo(p)->nr_frags += skb_shinfo(skb)->nr_frags; - skb_shinfo(skb)->nr_frags = 0; + frag->page_offset += offset; + frag->size -= offset; skb->truesize -= skb->data_len; skb->len -= skb->data_len; @@ -2715,7 +2728,7 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) *NAPI_GRO_CB(nskb) = *NAPI_GRO_CB(p); skb_shinfo(nskb)->frag_list = p; - skb_shinfo(nskb)->gso_size = skb_shinfo(p)->gso_size; + skb_shinfo(nskb)->gso_size = pinfo->gso_size; skb_header_release(p); nskb->prev = p; @@ -2730,16 +2743,13 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb) p = nskb; merge: - if (skb_gro_offset(skb) > skb_headlen(skb)) { - skb_shinfo(skb)->frags[0].page_offset += - skb_gro_offset(skb) - skb_headlen(skb); - skb_shinfo(skb)->frags[0].size -= - skb_gro_offset(skb) - skb_headlen(skb); - skb_gro_reset_offset(skb); - skb_gro_pull(skb, skb_headlen(skb)); + if (offset > headlen) { + skbinfo->frags[0].page_offset += offset - headlen; + skbinfo->frags[0].size -= offset - headlen; + offset = headlen; } - __skb_pull(skb, skb_gro_offset(skb)); + __skb_pull(skb, offset); p->prev->next = skb; p->prev = skb; diff --git a/net/core/sock.c b/net/core/sock.c index 7dbf3ffb35cc..58dec9dff99a 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -212,6 +212,7 @@ __u32 sysctl_rmem_default __read_mostly = SK_RMEM_MAX; /* Maximal space eaten by iovec or ancilliary data plus some space */ int sysctl_optmem_max __read_mostly = sizeof(unsigned long)*(2*UIO_MAXIOV+512); +EXPORT_SYMBOL(sysctl_optmem_max); static int sock_set_timeout(long *timeo_p, char __user *optval, int optlen) { @@ -444,7 +445,7 @@ static inline void sock_valbool_flag(struct sock *sk, int bit, int valbool) int sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen) { - struct sock *sk=sock->sk; + struct sock *sk = sock->sk; int val; int valbool; struct linger ling; @@ -463,15 +464,15 @@ int sock_setsockopt(struct socket *sock, int level, int optname, if (get_user(val, (int __user *)optval)) return -EFAULT; - valbool = val?1:0; + valbool = val ? 1 : 0; lock_sock(sk); - switch(optname) { + switch (optname) { case SO_DEBUG: - if (val && !capable(CAP_NET_ADMIN)) { + if (val && !capable(CAP_NET_ADMIN)) ret = -EACCES; - } else + else sock_valbool_flag(sk, SOCK_DBG, valbool); break; case SO_REUSEADDR: @@ -582,7 +583,7 @@ set_rcvbuf: ret = -EINVAL; /* 1003.1g */ break; } - if (copy_from_user(&ling,optval,sizeof(ling))) { + if (copy_from_user(&ling, optval, sizeof(ling))) { ret = -EFAULT; break; } @@ -690,9 +691,8 @@ set_rcvbuf: case SO_MARK: if (!capable(CAP_NET_ADMIN)) ret = -EPERM; - else { + else sk->sk_mark = val; - } break; /* We implement the SO_SNDLOWAT etc to @@ -704,6 +704,7 @@ set_rcvbuf: release_sock(sk); return ret; } +EXPORT_SYMBOL(sock_setsockopt); int sock_getsockopt(struct socket *sock, int level, int optname, @@ -727,7 +728,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname, memset(&v, 0, sizeof(v)); - switch(optname) { + switch (optname) { case SO_DEBUG: v.val = sock_flag(sk, SOCK_DBG); break; @@ -762,7 +763,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname, case SO_ERROR: v.val = -sock_error(sk); - if (v.val==0) + if (v.val == 0) v.val = xchg(&sk->sk_err_soft, 0); break; @@ -816,7 +817,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname, break; case SO_RCVTIMEO: - lv=sizeof(struct timeval); + lv = sizeof(struct timeval); if (sk->sk_rcvtimeo == MAX_SCHEDULE_TIMEOUT) { v.tm.tv_sec = 0; v.tm.tv_usec = 0; @@ -827,7 +828,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname, break; case SO_SNDTIMEO: - lv=sizeof(struct timeval); + lv = sizeof(struct timeval); if (sk->sk_sndtimeo == MAX_SCHEDULE_TIMEOUT) { v.tm.tv_sec = 0; v.tm.tv_usec = 0; @@ -842,7 +843,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname, break; case SO_SNDLOWAT: - v.val=1; + v.val = 1; break; case SO_PASSCRED: @@ -1002,6 +1003,7 @@ struct sock *sk_alloc(struct net *net, int family, gfp_t priority, return sk; } +EXPORT_SYMBOL(sk_alloc); void sk_free(struct sock *sk) { @@ -1026,6 +1028,7 @@ void sk_free(struct sock *sk) put_net(sock_net(sk)); sk_prot_free(sk->sk_prot_creator, sk); } +EXPORT_SYMBOL(sk_free); /* * Last sock_put should drop referrence to sk->sk_net. It has already @@ -1126,7 +1129,6 @@ struct sock *sk_clone(const struct sock *sk, const gfp_t priority) out: return newsk; } - EXPORT_SYMBOL_GPL(sk_clone); void sk_setup_caps(struct sock *sk, struct dst_entry *dst) @@ -1177,6 +1179,7 @@ void sock_wfree(struct sk_buff *skb) sk->sk_write_space(sk); sock_put(sk); } +EXPORT_SYMBOL(sock_wfree); /* * Read buffer destructor automatically called from kfree_skb. @@ -1188,6 +1191,7 @@ void sock_rfree(struct sk_buff *skb) atomic_sub(skb->truesize, &sk->sk_rmem_alloc); sk_mem_uncharge(skb->sk, skb->truesize); } +EXPORT_SYMBOL(sock_rfree); int sock_i_uid(struct sock *sk) @@ -1199,6 +1203,7 @@ int sock_i_uid(struct sock *sk) read_unlock(&sk->sk_callback_lock); return uid; } +EXPORT_SYMBOL(sock_i_uid); unsigned long sock_i_ino(struct sock *sk) { @@ -1209,6 +1214,7 @@ unsigned long sock_i_ino(struct sock *sk) read_unlock(&sk->sk_callback_lock); return ino; } +EXPORT_SYMBOL(sock_i_ino); /* * Allocate a skb from the socket's send buffer. @@ -1217,7 +1223,7 @@ struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force, gfp_t priority) { if (force || atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf) { - struct sk_buff * skb = alloc_skb(size, priority); + struct sk_buff *skb = alloc_skb(size, priority); if (skb) { skb_set_owner_w(skb, sk); return skb; @@ -1225,6 +1231,7 @@ struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force, } return NULL; } +EXPORT_SYMBOL(sock_wmalloc); /* * Allocate a skb from the socket's receive buffer. @@ -1261,6 +1268,7 @@ void *sock_kmalloc(struct sock *sk, int size, gfp_t priority) } return NULL; } +EXPORT_SYMBOL(sock_kmalloc); /* * Free an option memory block. @@ -1270,11 +1278,12 @@ void sock_kfree_s(struct sock *sk, void *mem, int size) kfree(mem); atomic_sub(size, &sk->sk_omem_alloc); } +EXPORT_SYMBOL(sock_kfree_s); /* It is almost wait_for_tcp_memory minus release_sock/lock_sock. I think, these locks should be removed for datagram sockets. */ -static long sock_wait_for_wmem(struct sock * sk, long timeo) +static long sock_wait_for_wmem(struct sock *sk, long timeo) { DEFINE_WAIT(wait); @@ -1392,6 +1401,7 @@ struct sk_buff *sock_alloc_send_skb(struct sock *sk, unsigned long size, { return sock_alloc_send_pskb(sk, size, 0, noblock, errcode); } +EXPORT_SYMBOL(sock_alloc_send_skb); static void __lock_sock(struct sock *sk) { @@ -1460,7 +1470,6 @@ int sk_wait_data(struct sock *sk, long *timeo) finish_wait(sk->sk_sleep, &wait); return rc; } - EXPORT_SYMBOL(sk_wait_data); /** @@ -1541,7 +1550,6 @@ suppress_allocation: atomic_sub(amt, prot->memory_allocated); return 0; } - EXPORT_SYMBOL(__sk_mem_schedule); /** @@ -1560,7 +1568,6 @@ void __sk_mem_reclaim(struct sock *sk) (atomic_read(prot->memory_allocated) < prot->sysctl_mem[0])) *prot->memory_pressure = 0; } - EXPORT_SYMBOL(__sk_mem_reclaim); @@ -1575,78 +1582,92 @@ int sock_no_bind(struct socket *sock, struct sockaddr *saddr, int len) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_bind); int sock_no_connect(struct socket *sock, struct sockaddr *saddr, int len, int flags) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_connect); int sock_no_socketpair(struct socket *sock1, struct socket *sock2) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_socketpair); int sock_no_accept(struct socket *sock, struct socket *newsock, int flags) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_accept); int sock_no_getname(struct socket *sock, struct sockaddr *saddr, int *len, int peer) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_getname); -unsigned int sock_no_poll(struct file * file, struct socket *sock, poll_table *pt) +unsigned int sock_no_poll(struct file *file, struct socket *sock, poll_table *pt) { return 0; } +EXPORT_SYMBOL(sock_no_poll); int sock_no_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_ioctl); int sock_no_listen(struct socket *sock, int backlog) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_listen); int sock_no_shutdown(struct socket *sock, int how) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_shutdown); int sock_no_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_setsockopt); int sock_no_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_getsockopt); int sock_no_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_sendmsg); int sock_no_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *m, size_t len, int flags) { return -EOPNOTSUPP; } +EXPORT_SYMBOL(sock_no_recvmsg); int sock_no_mmap(struct file *file, struct socket *sock, struct vm_area_struct *vma) { /* Mirror missing mmap method error code */ return -ENODEV; } +EXPORT_SYMBOL(sock_no_mmap); ssize_t sock_no_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags) { @@ -1660,6 +1681,7 @@ ssize_t sock_no_sendpage(struct socket *sock, struct page *page, int offset, siz kunmap(page); return res; } +EXPORT_SYMBOL(sock_no_sendpage); /* * Default Socket Callbacks @@ -1723,6 +1745,7 @@ void sk_send_sigurg(struct sock *sk) if (send_sigurg(&sk->sk_socket->file->f_owner)) sk_wake_async(sk, SOCK_WAKE_URG, POLL_PRI); } +EXPORT_SYMBOL(sk_send_sigurg); void sk_reset_timer(struct sock *sk, struct timer_list* timer, unsigned long expires) @@ -1730,7 +1753,6 @@ void sk_reset_timer(struct sock *sk, struct timer_list* timer, if (!mod_timer(timer, expires)) sock_hold(sk); } - EXPORT_SYMBOL(sk_reset_timer); void sk_stop_timer(struct sock *sk, struct timer_list* timer) @@ -1738,7 +1760,6 @@ void sk_stop_timer(struct sock *sk, struct timer_list* timer) if (timer_pending(timer) && del_timer(timer)) __sock_put(sk); } - EXPORT_SYMBOL(sk_stop_timer); void sock_init_data(struct socket *sock, struct sock *sk) @@ -1797,6 +1818,7 @@ void sock_init_data(struct socket *sock, struct sock *sk) atomic_set(&sk->sk_refcnt, 1); atomic_set(&sk->sk_drops, 0); } +EXPORT_SYMBOL(sock_init_data); void lock_sock_nested(struct sock *sk, int subclass) { @@ -1812,7 +1834,6 @@ void lock_sock_nested(struct sock *sk, int subclass) mutex_acquire(&sk->sk_lock.dep_map, subclass, 0, _RET_IP_); local_bh_enable(); } - EXPORT_SYMBOL(lock_sock_nested); void release_sock(struct sock *sk) @@ -1895,7 +1916,6 @@ int sock_common_getsockopt(struct socket *sock, int level, int optname, return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen); } - EXPORT_SYMBOL(sock_common_getsockopt); #ifdef CONFIG_COMPAT @@ -1925,7 +1945,6 @@ int sock_common_recvmsg(struct kiocb *iocb, struct socket *sock, msg->msg_namelen = addr_len; return err; } - EXPORT_SYMBOL(sock_common_recvmsg); /* @@ -1938,7 +1957,6 @@ int sock_common_setsockopt(struct socket *sock, int level, int optname, return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen); } - EXPORT_SYMBOL(sock_common_setsockopt); #ifdef CONFIG_COMPAT @@ -1989,7 +2007,6 @@ void sk_common_release(struct sock *sk) sk_refcnt_debug_release(sk); sock_put(sk); } - EXPORT_SYMBOL(sk_common_release); static DEFINE_RWLOCK(proto_list_lock); @@ -2171,7 +2188,6 @@ out_free_sock_slab: out: return -ENOBUFS; } - EXPORT_SYMBOL(proto_register); void proto_unregister(struct proto *prot) @@ -2198,7 +2214,6 @@ void proto_unregister(struct proto *prot) prot->twsk_prot->twsk_slab = NULL; } } - EXPORT_SYMBOL(proto_unregister); #ifdef CONFIG_PROC_FS @@ -2324,33 +2339,3 @@ static int __init proto_init(void) subsys_initcall(proto_init); #endif /* PROC_FS */ - -EXPORT_SYMBOL(sk_alloc); -EXPORT_SYMBOL(sk_free); -EXPORT_SYMBOL(sk_send_sigurg); -EXPORT_SYMBOL(sock_alloc_send_skb); -EXPORT_SYMBOL(sock_init_data); -EXPORT_SYMBOL(sock_kfree_s); -EXPORT_SYMBOL(sock_kmalloc); -EXPORT_SYMBOL(sock_no_accept); -EXPORT_SYMBOL(sock_no_bind); -EXPORT_SYMBOL(sock_no_connect); -EXPORT_SYMBOL(sock_no_getname); -EXPORT_SYMBOL(sock_no_getsockopt); -EXPORT_SYMBOL(sock_no_ioctl); -EXPORT_SYMBOL(sock_no_listen); -EXPORT_SYMBOL(sock_no_mmap); -EXPORT_SYMBOL(sock_no_poll); -EXPORT_SYMBOL(sock_no_recvmsg); -EXPORT_SYMBOL(sock_no_sendmsg); -EXPORT_SYMBOL(sock_no_sendpage); -EXPORT_SYMBOL(sock_no_setsockopt); -EXPORT_SYMBOL(sock_no_shutdown); -EXPORT_SYMBOL(sock_no_socketpair); -EXPORT_SYMBOL(sock_rfree); -EXPORT_SYMBOL(sock_setsockopt); -EXPORT_SYMBOL(sock_wfree); -EXPORT_SYMBOL(sock_wmalloc); -EXPORT_SYMBOL(sock_i_uid); -EXPORT_SYMBOL(sock_i_ino); -EXPORT_SYMBOL(sysctl_optmem_max); diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c index 9647d911f916..bccb3887773e 100644 --- a/net/decnet/af_decnet.c +++ b/net/decnet/af_decnet.c @@ -1250,14 +1250,8 @@ static int dn_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) if (skb) { amount = skb->len; } else { - skb = sk->sk_receive_queue.next; - for (;;) { - if (skb == - (struct sk_buff *)&sk->sk_receive_queue) - break; + skb_queue_walk(&sk->sk_receive_queue, skb) amount += skb->len; - skb = skb->next; - } } release_sock(sk); err = put_user(amount, (int __user *)arg); @@ -1644,13 +1638,13 @@ static int __dn_getsockopt(struct socket *sock, int level,int optname, char __us static int dn_data_ready(struct sock *sk, struct sk_buff_head *q, int flags, int target) { - struct sk_buff *skb = q->next; + struct sk_buff *skb; int len = 0; if (flags & MSG_OOB) return !skb_queue_empty(q) ? 1 : 0; - while(skb != (struct sk_buff *)q) { + skb_queue_walk(q, skb) { struct dn_skb_cb *cb = DN_SKB_CB(skb); len += skb->len; @@ -1666,8 +1660,6 @@ static int dn_data_ready(struct sock *sk, struct sk_buff_head *q, int flags, int /* minimum data length for read exceeded */ if (len >= target) return 1; - - skb = skb->next; } return 0; @@ -1683,7 +1675,7 @@ static int dn_recvmsg(struct kiocb *iocb, struct socket *sock, size_t target = size > 1 ? 1 : 0; size_t copied = 0; int rv = 0; - struct sk_buff *skb, *nskb; + struct sk_buff *skb, *n; struct dn_skb_cb *cb = NULL; unsigned char eor = 0; long timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); @@ -1758,7 +1750,7 @@ static int dn_recvmsg(struct kiocb *iocb, struct socket *sock, finish_wait(sk->sk_sleep, &wait); } - for(skb = queue->next; skb != (struct sk_buff *)queue; skb = nskb) { + skb_queue_walk_safe(queue, skb, n) { unsigned int chunk = skb->len; cb = DN_SKB_CB(skb); @@ -1775,7 +1767,6 @@ static int dn_recvmsg(struct kiocb *iocb, struct socket *sock, skb_pull(skb, chunk); eor = cb->nsp_flags & 0x40; - nskb = skb->next; if (skb->len == 0) { skb_unlink(skb, queue); diff --git a/net/decnet/dn_nsp_out.c b/net/decnet/dn_nsp_out.c index 2013c25b7f5a..da04f459337e 100644 --- a/net/decnet/dn_nsp_out.c +++ b/net/decnet/dn_nsp_out.c @@ -382,7 +382,7 @@ int dn_nsp_check_xmit_queue(struct sock *sk, struct sk_buff *skb, struct sk_buff { struct dn_skb_cb *cb = DN_SKB_CB(skb); struct dn_scp *scp = DN_SK(sk); - struct sk_buff *skb2, *list, *ack = NULL; + struct sk_buff *skb2, *n, *ack = NULL; int wakeup = 0; int try_retrans = 0; unsigned long reftime = cb->stamp; @@ -390,9 +390,7 @@ int dn_nsp_check_xmit_queue(struct sock *sk, struct sk_buff *skb, struct sk_buff unsigned short xmit_count; unsigned short segnum; - skb2 = q->next; - list = (struct sk_buff *)q; - while(list != skb2) { + skb_queue_walk_safe(q, skb2, n) { struct dn_skb_cb *cb2 = DN_SKB_CB(skb2); if (dn_before_or_equal(cb2->segnum, acknum)) @@ -400,8 +398,6 @@ int dn_nsp_check_xmit_queue(struct sock *sk, struct sk_buff *skb, struct sk_buff /* printk(KERN_DEBUG "ack: %s %04x %04x\n", ack ? "ACK" : "SKIP", (int)cb2->segnum, (int)acknum); */ - skb2 = skb2->next; - if (ack == NULL) continue; diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c index 6f479fa522c3..8121bf0029e3 100644 --- a/net/econet/af_econet.c +++ b/net/econet/af_econet.c @@ -901,15 +901,10 @@ static void aun_tx_ack(unsigned long seq, int result) struct ec_cb *eb; spin_lock_irqsave(&aun_queue_lock, flags); - skb = skb_peek(&aun_queue); - while (skb && skb != (struct sk_buff *)&aun_queue) - { - struct sk_buff *newskb = skb->next; + skb_queue_walk(&aun_queue, skb) { eb = (struct ec_cb *)&skb->cb; if (eb->seq == seq) goto foundit; - - skb = newskb; } spin_unlock_irqrestore(&aun_queue_lock, flags); printk(KERN_DEBUG "AUN: unknown sequence %ld\n", seq); @@ -982,23 +977,18 @@ static void aun_data_available(struct sock *sk, int slen) static void ab_cleanup(unsigned long h) { - struct sk_buff *skb; + struct sk_buff *skb, *n; unsigned long flags; spin_lock_irqsave(&aun_queue_lock, flags); - skb = skb_peek(&aun_queue); - while (skb && skb != (struct sk_buff *)&aun_queue) - { - struct sk_buff *newskb = skb->next; + skb_queue_walk_safe(&aun_queue, skb, n) { struct ec_cb *eb = (struct ec_cb *)&skb->cb; - if ((jiffies - eb->start) > eb->timeout) - { + if ((jiffies - eb->start) > eb->timeout) { tx_result(skb->sk, eb->cookie, ECTYPE_TRANSMIT_NOT_PRESENT); skb_unlink(skb, &aun_queue); kfree_skb(skb); } - skb = newskb; } spin_unlock_irqrestore(&aun_queue_lock, flags); diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c index 280352aba403..5a883affecd3 100644 --- a/net/ethernet/eth.c +++ b/net/ethernet/eth.c @@ -337,11 +337,6 @@ const struct header_ops eth_header_ops ____cacheline_aligned = { void ether_setup(struct net_device *dev) { dev->header_ops = ð_header_ops; -#ifdef CONFIG_COMPAT_NET_DEV_OPS - dev->change_mtu = eth_change_mtu; - dev->set_mac_address = eth_mac_addr; - dev->validate_addr = eth_validate_addr; -#endif dev->type = ARPHRD_ETHER; dev->hard_header_len = ETH_HLEN; dev->mtu = ETH_DATA_LEN; diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 9d26a3da37e5..5b919f7b45db 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -408,7 +408,7 @@ config INET_XFRM_MODE_BEET config INET_LRO bool "Large Receive Offload (ipv4/tcp)" - + default y ---help--- Support for Large Receive Offload (ipv4/tcp). diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 170689681aa2..5abee4c97449 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1246,13 +1246,20 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head, struct sk_buff **pp = NULL; struct sk_buff *p; struct iphdr *iph; + unsigned int hlen; + unsigned int off; + unsigned int id; int flush = 1; int proto; - int id; - iph = skb_gro_header(skb, sizeof(*iph)); - if (unlikely(!iph)) - goto out; + off = skb_gro_offset(skb); + hlen = off + sizeof(*iph); + iph = skb_gro_header_fast(skb, off); + if (skb_gro_header_hard(skb, hlen)) { + iph = skb_gro_header_slow(skb, hlen, off); + if (unlikely(!iph)) + goto out; + } proto = iph->protocol & (MAX_INET_PROTOS - 1); @@ -1267,9 +1274,9 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head, if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl))) goto out_unlock; - flush = ntohs(iph->tot_len) != skb_gro_len(skb) || - iph->frag_off != htons(IP_DF); - id = ntohs(iph->id); + id = ntohl(*(u32 *)&iph->id); + flush = (u16)((ntohl(*(u32 *)iph) ^ skb_gro_len(skb)) | (id ^ IP_DF)); + id >>= 16; for (p = *head; p; p = p->next) { struct iphdr *iph2; diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 9070d11058e5..538d2a9a5115 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -986,9 +986,12 @@ fib_find_node(struct trie *t, u32 key) static struct node *trie_rebalance(struct trie *t, struct tnode *tn) { int wasfull; - t_key cindex, key = tn->key; + t_key cindex, key; struct tnode *tp; + preempt_disable(); + key = tn->key; + while (tn != NULL && (tp = node_parent((struct node *)tn)) != NULL) { cindex = tkey_extract_bits(key, tp->pos, tp->bits); wasfull = tnode_full(tp, tnode_get_child(tp, cindex)); @@ -1007,6 +1010,7 @@ static struct node *trie_rebalance(struct trie *t, struct tnode *tn) if (IS_TNODE(tn)) tn = (struct tnode *)resize(t, (struct tnode *)tn); + preempt_enable(); return (struct node *)tn; } diff --git a/net/ipv4/route.c b/net/ipv4/route.c index c4c60e9f068a..28205e5bfa9b 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -784,8 +784,8 @@ static void rt_check_expire(void) { static unsigned int rover; unsigned int i = rover, goal; - struct rtable *rth, **rthp; - unsigned long length = 0, samples = 0; + struct rtable *rth, *aux, **rthp; + unsigned long samples = 0; unsigned long sum = 0, sum2 = 0; u64 mult; @@ -795,9 +795,9 @@ static void rt_check_expire(void) goal = (unsigned int)mult; if (goal > rt_hash_mask) goal = rt_hash_mask + 1; - length = 0; for (; goal > 0; goal--) { unsigned long tmo = ip_rt_gc_timeout; + unsigned long length; i = (i + 1) & rt_hash_mask; rthp = &rt_hash_table[i].chain; @@ -809,8 +809,10 @@ static void rt_check_expire(void) if (*rthp == NULL) continue; + length = 0; spin_lock_bh(rt_hash_lock_addr(i)); while ((rth = *rthp) != NULL) { + prefetch(rth->u.dst.rt_next); if (rt_is_expired(rth)) { *rthp = rth->u.dst.rt_next; rt_free(rth); @@ -819,33 +821,30 @@ static void rt_check_expire(void) if (rth->u.dst.expires) { /* Entry is expired even if it is in use */ if (time_before_eq(jiffies, rth->u.dst.expires)) { +nofree: tmo >>= 1; rthp = &rth->u.dst.rt_next; /* - * Only bump our length if the hash - * inputs on entries n and n+1 are not - * the same, we only count entries on + * We only count entries on * a chain with equal hash inputs once * so that entries for different QOS * levels, and other non-hash input * attributes don't unfairly skew * the length computation */ - if ((*rthp == NULL) || - !compare_hash_inputs(&(*rthp)->fl, - &rth->fl)) - length += ONE; + for (aux = rt_hash_table[i].chain;;) { + if (aux == rth) { + length += ONE; + break; + } + if (compare_hash_inputs(&aux->fl, &rth->fl)) + break; + aux = aux->u.dst.rt_next; + } continue; } - } else if (!rt_may_expire(rth, tmo, ip_rt_gc_timeout)) { - tmo >>= 1; - rthp = &rth->u.dst.rt_next; - if ((*rthp == NULL) || - !compare_hash_inputs(&(*rthp)->fl, - &rth->fl)) - length += ONE; - continue; - } + } else if (!rt_may_expire(rth, tmo, ip_rt_gc_timeout)) + goto nofree; /* Cleanup aged off entries. */ *rthp = rth->u.dst.rt_next; @@ -1068,7 +1067,6 @@ out: return 0; static int rt_intern_hash(unsigned hash, struct rtable *rt, struct rtable **rp) { struct rtable *rth, **rthp; - struct rtable *rthi; unsigned long now; struct rtable *cand, **candp; u32 min_score; @@ -1088,7 +1086,6 @@ restart: } rthp = &rt_hash_table[hash].chain; - rthi = NULL; spin_lock_bh(rt_hash_lock_addr(hash)); while ((rth = *rthp) != NULL) { @@ -1134,17 +1131,6 @@ restart: chain_length++; rthp = &rth->u.dst.rt_next; - - /* - * check to see if the next entry in the chain - * contains the same hash input values as rt. If it does - * This is where we will insert into the list, instead of - * at the head. This groups entries that differ by aspects not - * relvant to the hash function together, which we use to adjust - * our chain length - */ - if (*rthp && compare_hash_inputs(&(*rthp)->fl, &rt->fl)) - rthi = rth; } if (cand) { @@ -1205,10 +1191,7 @@ restart: } } - if (rthi) - rt->u.dst.rt_next = rthi->u.dst.rt_next; - else - rt->u.dst.rt_next = rt_hash_table[hash].chain; + rt->u.dst.rt_next = rt_hash_table[hash].chain; #if RT_CACHE_DEBUG >= 2 if (rt->u.dst.rt_next) { @@ -1224,10 +1207,7 @@ restart: * previous writes to rt are comitted to memory * before making rt visible to other CPUS. */ - if (rthi) - rcu_assign_pointer(rthi->u.dst.rt_next, rt); - else - rcu_assign_pointer(rt_hash_table[hash].chain, rt); + rcu_assign_pointer(rt_hash_table[hash].chain, rt); spin_unlock_bh(rt_hash_lock_addr(hash)); *rp = rt; diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 7a0f0b27bf1f..17b89c523f9d 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -439,12 +439,14 @@ int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg) !tp->urg_data || before(tp->urg_seq, tp->copied_seq) || !before(tp->urg_seq, tp->rcv_nxt)) { + struct sk_buff *skb; + answ = tp->rcv_nxt - tp->copied_seq; /* Subtract 1, if FIN is in queue. */ - if (answ && !skb_queue_empty(&sk->sk_receive_queue)) - answ -= - tcp_hdr((struct sk_buff *)sk->sk_receive_queue.prev)->fin; + skb = skb_peek_tail(&sk->sk_receive_queue); + if (answ && skb) + answ -= tcp_hdr(skb)->fin; } else answ = tp->urg_seq - tp->copied_seq; release_sock(sk); @@ -1382,11 +1384,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, /* Next get a buffer. */ - skb = skb_peek(&sk->sk_receive_queue); - do { - if (!skb) - break; - + skb_queue_walk(&sk->sk_receive_queue, skb) { /* Now that we have two receive queues this * shouldn't happen. */ @@ -1403,8 +1401,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, if (tcp_hdr(skb)->fin) goto found_fin_ok; WARN_ON(!(flags & MSG_PEEK)); - skb = skb->next; - } while (skb != (struct sk_buff *)&sk->sk_receive_queue); + } /* Well, if we have backlog, try to process it now yet. */ @@ -2518,20 +2515,30 @@ struct sk_buff **tcp_gro_receive(struct sk_buff **head, struct sk_buff *skb) unsigned int thlen; unsigned int flags; unsigned int mss = 1; + unsigned int hlen; + unsigned int off; int flush = 1; int i; - th = skb_gro_header(skb, sizeof(*th)); - if (unlikely(!th)) - goto out; + off = skb_gro_offset(skb); + hlen = off + sizeof(*th); + th = skb_gro_header_fast(skb, off); + if (skb_gro_header_hard(skb, hlen)) { + th = skb_gro_header_slow(skb, hlen, off); + if (unlikely(!th)) + goto out; + } thlen = th->doff * 4; if (thlen < sizeof(*th)) goto out; - th = skb_gro_header(skb, thlen); - if (unlikely(!th)) - goto out; + hlen = off + thlen; + if (skb_gro_header_hard(skb, hlen)) { + th = skb_gro_header_slow(skb, hlen, off); + if (unlikely(!th)) + goto out; + } skb_gro_pull(skb, thlen); @@ -2544,7 +2551,7 @@ struct sk_buff **tcp_gro_receive(struct sk_buff **head, struct sk_buff *skb) th2 = tcp_hdr(p); - if ((th->source ^ th2->source) | (th->dest ^ th2->dest)) { + if (*(u32 *)&th->source ^ *(u32 *)&th2->source) { NAPI_GRO_CB(p)->same_flow = 0; continue; } @@ -2559,14 +2566,14 @@ found: flush |= flags & TCP_FLAG_CWR; flush |= (flags ^ tcp_flag_word(th2)) & ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH); - flush |= (th->ack_seq ^ th2->ack_seq) | (th->window ^ th2->window); - for (i = sizeof(*th); !flush && i < thlen; i += 4) + flush |= th->ack_seq ^ th2->ack_seq; + for (i = sizeof(*th); i < thlen; i += 4) flush |= *(u32 *)((u8 *)th + i) ^ *(u32 *)((u8 *)th2 + i); mss = skb_shinfo(p)->gso_size; - flush |= (len > mss) | !len; + flush |= (len - 1) >= mss; flush |= (ntohl(th2->seq) + skb_gro_len(p)) ^ ntohl(th->seq); if (flush || skb_gro_receive(head, skb)) { diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index eeb8a92aa416..ba34a23c1bfb 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -4426,7 +4426,7 @@ drop: } __skb_queue_head(&tp->out_of_order_queue, skb); } else { - struct sk_buff *skb1 = tp->out_of_order_queue.prev; + struct sk_buff *skb1 = skb_peek_tail(&tp->out_of_order_queue); u32 seq = TCP_SKB_CB(skb)->seq; u32 end_seq = TCP_SKB_CB(skb)->end_seq; @@ -4443,15 +4443,18 @@ drop: } /* Find place to insert this segment. */ - do { + while (1) { if (!after(TCP_SKB_CB(skb1)->seq, seq)) break; - } while ((skb1 = skb1->prev) != - (struct sk_buff *)&tp->out_of_order_queue); + if (skb_queue_is_first(&tp->out_of_order_queue, skb1)) { + skb1 = NULL; + break; + } + skb1 = skb_queue_prev(&tp->out_of_order_queue, skb1); + } /* Do skb overlap to previous one? */ - if (skb1 != (struct sk_buff *)&tp->out_of_order_queue && - before(seq, TCP_SKB_CB(skb1)->end_seq)) { + if (skb1 && before(seq, TCP_SKB_CB(skb1)->end_seq)) { if (!after(end_seq, TCP_SKB_CB(skb1)->end_seq)) { /* All the bits are present. Drop. */ __kfree_skb(skb); @@ -4463,24 +4466,41 @@ drop: tcp_dsack_set(sk, seq, TCP_SKB_CB(skb1)->end_seq); } else { - skb1 = skb1->prev; + if (skb_queue_is_first(&tp->out_of_order_queue, + skb1)) + skb1 = NULL; + else + skb1 = skb_queue_prev( + &tp->out_of_order_queue, + skb1); } } - __skb_queue_after(&tp->out_of_order_queue, skb1, skb); + if (!skb1) + __skb_queue_head(&tp->out_of_order_queue, skb); + else + __skb_queue_after(&tp->out_of_order_queue, skb1, skb); /* And clean segments covered by new one as whole. */ - while ((skb1 = skb->next) != - (struct sk_buff *)&tp->out_of_order_queue && - after(end_seq, TCP_SKB_CB(skb1)->seq)) { - if (before(end_seq, TCP_SKB_CB(skb1)->end_seq)) { + if (skb1 && !skb_queue_is_last(&tp->out_of_order_queue, skb1)) { + struct sk_buff *n; + + skb1 = skb_queue_next(&tp->out_of_order_queue, skb1); + skb_queue_walk_from_safe(&tp->out_of_order_queue, + skb1, n) { + if (!after(end_seq, TCP_SKB_CB(skb1)->seq)) + break; + if (before(end_seq, + TCP_SKB_CB(skb1)->end_seq)) { + tcp_dsack_extend(sk, + TCP_SKB_CB(skb1)->seq, + end_seq); + break; + } + __skb_unlink(skb1, &tp->out_of_order_queue); tcp_dsack_extend(sk, TCP_SKB_CB(skb1)->seq, - end_seq); - break; + TCP_SKB_CB(skb1)->end_seq); + __kfree_skb(skb1); } - __skb_unlink(skb1, &tp->out_of_order_queue); - tcp_dsack_extend(sk, TCP_SKB_CB(skb1)->seq, - TCP_SKB_CB(skb1)->end_seq); - __kfree_skb(skb1); } add_sack: @@ -4492,7 +4512,10 @@ add_sack: static struct sk_buff *tcp_collapse_one(struct sock *sk, struct sk_buff *skb, struct sk_buff_head *list) { - struct sk_buff *next = skb->next; + struct sk_buff *next = NULL; + + if (!skb_queue_is_last(list, skb)) + next = skb_queue_next(list, skb); __skb_unlink(skb, list); __kfree_skb(skb); @@ -4503,6 +4526,9 @@ static struct sk_buff *tcp_collapse_one(struct sock *sk, struct sk_buff *skb, /* Collapse contiguous sequence of skbs head..tail with * sequence numbers start..end. + * + * If tail is NULL, this means until the end of the list. + * * Segments with FIN/SYN are not collapsed (only because this * simplifies code) */ @@ -4511,15 +4537,23 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list, struct sk_buff *head, struct sk_buff *tail, u32 start, u32 end) { - struct sk_buff *skb; + struct sk_buff *skb, *n; + bool end_of_skbs; /* First, check that queue is collapsible and find * the point where collapsing can be useful. */ - for (skb = head; skb != tail;) { + skb = head; +restart: + end_of_skbs = true; + skb_queue_walk_from_safe(list, skb, n) { + if (skb == tail) + break; /* No new bits? It is possible on ofo queue. */ if (!before(start, TCP_SKB_CB(skb)->end_seq)) { skb = tcp_collapse_one(sk, skb, list); - continue; + if (!skb) + break; + goto restart; } /* The first skb to collapse is: @@ -4529,16 +4563,24 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list, */ if (!tcp_hdr(skb)->syn && !tcp_hdr(skb)->fin && (tcp_win_from_space(skb->truesize) > skb->len || - before(TCP_SKB_CB(skb)->seq, start) || - (skb->next != tail && - TCP_SKB_CB(skb)->end_seq != TCP_SKB_CB(skb->next)->seq))) + before(TCP_SKB_CB(skb)->seq, start))) { + end_of_skbs = false; break; + } + + if (!skb_queue_is_last(list, skb)) { + struct sk_buff *next = skb_queue_next(list, skb); + if (next != tail && + TCP_SKB_CB(skb)->end_seq != TCP_SKB_CB(next)->seq) { + end_of_skbs = false; + break; + } + } /* Decided to skip this, advance start seq. */ start = TCP_SKB_CB(skb)->end_seq; - skb = skb->next; } - if (skb == tail || tcp_hdr(skb)->syn || tcp_hdr(skb)->fin) + if (end_of_skbs || tcp_hdr(skb)->syn || tcp_hdr(skb)->fin) return; while (before(start, end)) { @@ -4583,7 +4625,8 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list, } if (!before(start, TCP_SKB_CB(skb)->end_seq)) { skb = tcp_collapse_one(sk, skb, list); - if (skb == tail || + if (!skb || + skb == tail || tcp_hdr(skb)->syn || tcp_hdr(skb)->fin) return; @@ -4610,17 +4653,21 @@ static void tcp_collapse_ofo_queue(struct sock *sk) head = skb; for (;;) { - skb = skb->next; + struct sk_buff *next = NULL; + + if (!skb_queue_is_last(&tp->out_of_order_queue, skb)) + next = skb_queue_next(&tp->out_of_order_queue, skb); + skb = next; /* Segment is terminated when we see gap or when * we are at the end of all the queue. */ - if (skb == (struct sk_buff *)&tp->out_of_order_queue || + if (!skb || after(TCP_SKB_CB(skb)->seq, end) || before(TCP_SKB_CB(skb)->end_seq, start)) { tcp_collapse(sk, &tp->out_of_order_queue, head, skb, start, end); head = skb; - if (skb == (struct sk_buff *)&tp->out_of_order_queue) + if (!skb) break; /* Start new segment */ start = TCP_SKB_CB(skb)->seq; @@ -4681,10 +4728,11 @@ static int tcp_prune_queue(struct sock *sk) tp->rcv_ssthresh = min(tp->rcv_ssthresh, 4U * tp->advmss); tcp_collapse_ofo_queue(sk); - tcp_collapse(sk, &sk->sk_receive_queue, - sk->sk_receive_queue.next, - (struct sk_buff *)&sk->sk_receive_queue, - tp->copied_seq, tp->rcv_nxt); + if (!skb_queue_empty(&sk->sk_receive_queue)) + tcp_collapse(sk, &sk->sk_receive_queue, + skb_peek(&sk->sk_receive_queue), + NULL, + tp->copied_seq, tp->rcv_nxt); sk_mem_reclaim(sk); if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf) diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 61f55386a236..b6215be0963f 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -817,13 +817,20 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head, struct sk_buff *p; struct ipv6hdr *iph; unsigned int nlen; + unsigned int hlen; + unsigned int off; int flush = 1; int proto; __wsum csum; - iph = skb_gro_header(skb, sizeof(*iph)); - if (unlikely(!iph)) - goto out; + off = skb_gro_offset(skb); + hlen = off + sizeof(*iph); + iph = skb_gro_header_fast(skb, off); + if (skb_gro_header_hard(skb, hlen)) { + iph = skb_gro_header_slow(skb, hlen, off); + if (unlikely(!iph)) + goto out; + } skb_gro_pull(skb, sizeof(*iph)); skb_set_transport_header(skb, skb_gro_offset(skb)); diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 1394ddb6e35c..032a5ec391c5 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -137,6 +137,7 @@ static struct rt6_info ip6_null_entry_template = { } }, .rt6i_flags = (RTF_REJECT | RTF_NONEXTHOP), + .rt6i_protocol = RTPROT_KERNEL, .rt6i_metric = ~(u32) 0, .rt6i_ref = ATOMIC_INIT(1), }; @@ -159,6 +160,7 @@ static struct rt6_info ip6_prohibit_entry_template = { } }, .rt6i_flags = (RTF_REJECT | RTF_NONEXTHOP), + .rt6i_protocol = RTPROT_KERNEL, .rt6i_metric = ~(u32) 0, .rt6i_ref = ATOMIC_INIT(1), }; @@ -176,6 +178,7 @@ static struct rt6_info ip6_blk_hole_entry_template = { } }, .rt6i_flags = (RTF_REJECT | RTF_NONEXTHOP), + .rt6i_protocol = RTPROT_KERNEL, .rt6i_metric = ~(u32) 0, .rt6i_ref = ATOMIC_INIT(1), }; diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index d9dd94b6bf66..ea37741062a9 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -941,7 +941,8 @@ static int tcp_v6_gso_send_check(struct sk_buff *skb) return 0; } -struct sk_buff **tcp6_gro_receive(struct sk_buff **head, struct sk_buff *skb) +static struct sk_buff **tcp6_gro_receive(struct sk_buff **head, + struct sk_buff *skb) { struct ipv6hdr *iph = skb_gro_network_header(skb); @@ -961,9 +962,8 @@ struct sk_buff **tcp6_gro_receive(struct sk_buff **head, struct sk_buff *skb) return tcp_gro_receive(head, skb); } -EXPORT_SYMBOL(tcp6_gro_receive); -int tcp6_gro_complete(struct sk_buff *skb) +static int tcp6_gro_complete(struct sk_buff *skb) { struct ipv6hdr *iph = ipv6_hdr(skb); struct tcphdr *th = tcp_hdr(skb); @@ -974,7 +974,6 @@ int tcp6_gro_complete(struct sk_buff *skb) return tcp_gro_complete(skb); } -EXPORT_SYMBOL(tcp6_gro_complete); static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32 ts, struct tcp_md5sig_key *key, int rst) diff --git a/net/irda/irlap_frame.c b/net/irda/irlap_frame.c index 2562ebc1b22c..7af2e74deda8 100644 --- a/net/irda/irlap_frame.c +++ b/net/irda/irlap_frame.c @@ -982,17 +982,12 @@ void irlap_resend_rejected_frames(struct irlap_cb *self, int command) { struct sk_buff *tx_skb; struct sk_buff *skb; - int count; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == LAP_MAGIC, return;); - /* Initialize variables */ - count = skb_queue_len(&self->wx_list); - /* Resend unacknowledged frame(s) */ - skb = skb_peek(&self->wx_list); - while (skb != NULL) { + skb_queue_walk(&self->wx_list, skb) { irlap_wait_min_turn_around(self, &self->qos_tx); /* We copy the skb to be retransmitted since we will have to @@ -1011,21 +1006,12 @@ void irlap_resend_rejected_frames(struct irlap_cb *self, int command) /* * Set poll bit on the last frame retransmitted */ - if (count-- == 1) + if (skb_queue_is_last(&self->wx_list, skb)) tx_skb->data[1] |= PF_BIT; /* Set p/f bit */ else tx_skb->data[1] &= ~PF_BIT; /* Clear p/f bit */ irlap_send_i_frame(self, tx_skb, command); - - /* - * If our skb is the last buffer in the list, then - * we are finished, if not, move to the next sk-buffer - */ - if (skb == skb_peek_tail(&self->wx_list)) - skb = NULL; - else - skb = skb->next; } #if 0 /* Not yet */ /* diff --git a/net/llc/llc_conn.c b/net/llc/llc_conn.c index 3477624a4906..c6bab39b018e 100644 --- a/net/llc/llc_conn.c +++ b/net/llc/llc_conn.c @@ -79,10 +79,6 @@ int llc_conn_state_process(struct sock *sk, struct sk_buff *skb) if (unlikely(!ev->ind_prim && !ev->cfm_prim)) { /* indicate or confirm not required */ - /* XXX this is not very pretty, perhaps we should store - * XXX indicate/confirm-needed state in the llc_conn_state_ev - * XXX control block of the SKB instead? -DaveM - */ if (!skb->next) goto out_kfree_skb; goto out_skb_put; diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index e7682fe1c590..11c72311f35b 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -52,14 +52,6 @@ static const struct file_operations name## _ops = { \ DEBUGFS_READONLY_FILE(frequency, 20, "%d", local->hw.conf.channel->center_freq); -DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d", - local->hw.wiphy->rts_threshold); -DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d", - local->hw.wiphy->frag_threshold); -DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d", - local->hw.wiphy->retry_short); -DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", - local->hw.wiphy->retry_long); DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", local->total_ps_buffered); DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x", @@ -303,10 +295,6 @@ void debugfs_hw_add(struct ieee80211_local *local) local->debugfs.keys = debugfs_create_dir("keys", phyd); DEBUGFS_ADD(frequency); - DEBUGFS_ADD(rts_threshold); - DEBUGFS_ADD(fragmentation_threshold); - DEBUGFS_ADD(short_retry_limit); - DEBUGFS_ADD(long_retry_limit); DEBUGFS_ADD(total_ps_buffered); DEBUGFS_ADD(wep_iv); DEBUGFS_ADD(tsf); @@ -359,10 +347,6 @@ void debugfs_hw_add(struct ieee80211_local *local) void debugfs_hw_del(struct ieee80211_local *local) { DEBUGFS_DEL(frequency); - DEBUGFS_DEL(rts_threshold); - DEBUGFS_DEL(fragmentation_threshold); - DEBUGFS_DEL(short_retry_limit); - DEBUGFS_DEL(long_retry_limit); DEBUGFS_DEL(total_ps_buffered); DEBUGFS_DEL(wep_iv); DEBUGFS_DEL(tsf); diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index c236079ed38a..0b30277eb366 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -535,9 +535,9 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) bssid = ifibss->bssid; bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, bssid, ifibss->ssid, ifibss->ssid_len, - capability, WLAN_CAPABILITY_IBSS | - WLAN_CAPABILITY_PRIVACY); + WLAN_CAPABILITY_PRIVACY, + capability); #ifdef CONFIG_MAC80211_IBSS_DEBUG if (bss) @@ -737,6 +737,9 @@ static void ieee80211_ibss_work(struct work_struct *work) struct ieee80211_if_ibss *ifibss; struct sk_buff *skb; + if (WARN_ON(local->suspended)) + return; + if (!netif_running(sdata->dev)) return; @@ -773,10 +776,36 @@ static void ieee80211_ibss_timer(unsigned long data) struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct ieee80211_local *local = sdata->local; + if (local->quiescing) { + ifibss->timer_running = true; + return; + } + set_bit(IEEE80211_IBSS_REQ_RUN, &ifibss->request); queue_work(local->hw.workqueue, &ifibss->work); } +#ifdef CONFIG_PM +void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; + + cancel_work_sync(&ifibss->work); + if (del_timer_sync(&ifibss->timer)) + ifibss->timer_running = true; +} + +void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; + + if (ifibss->timer_running) { + add_timer(&ifibss->timer); + ifibss->timer_running = false; + } +} +#endif + void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 9d1514727f6e..c088c46704a3 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -293,6 +293,7 @@ struct ieee80211_if_managed { int auth_tries; /* retries for auth req */ int assoc_tries; /* retries for assoc req */ + unsigned long timers_running; /* used for quiesce/restart */ bool powersave; /* powersave requested for this iface */ unsigned long request; @@ -333,6 +334,9 @@ struct ieee80211_if_ibss { unsigned long request; unsigned long last_scan_completed; + + bool timer_running; + bool fixed_bssid; bool fixed_channel; @@ -358,6 +362,8 @@ struct ieee80211_if_mesh { struct timer_list mesh_path_timer; struct sk_buff_head skb_queue; + unsigned long timers_running; + bool housekeeping; u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; @@ -609,6 +615,21 @@ struct ieee80211_local { unsigned int filter_flags; /* FIF_* */ struct iw_statistics wstats; bool tim_in_locked_section; /* see ieee80211_beacon_get() */ + + /* + * suspended is true if we finished all the suspend _and_ we have + * not yet come up from resume. This is to be used by mac80211 + * to ensure driver sanity during suspend and mac80211's own + * sanity. It can eventually be used for WoW as well. + */ + bool suspended; + + /* + * quiescing is true during the suspend process _only_ to + * ease timer cancelling etc. + */ + bool quiescing; + int tx_headroom; /* required headroom for hardware/radiotap */ /* Tasklet and skb queue to process calls from IRQ mode. All frames @@ -758,10 +779,6 @@ struct ieee80211_local { struct dentry *rcdir; struct dentry *rcname; struct dentry *frequency; - struct dentry *rts_threshold; - struct dentry *fragmentation_threshold; - struct dentry *short_retry_limit; - struct dentry *long_retry_limit; struct dentry *total_ps_buffered; struct dentry *wep_iv; struct dentry *tsf; @@ -938,6 +955,11 @@ void ieee80211_send_pspoll(struct ieee80211_local *local, void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); int ieee80211_max_network_latency(struct notifier_block *nb, unsigned long data, void *dummy); +void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, + struct ieee80211_channel_sw_ie *sw_elem, + struct ieee80211_bss *bss); +void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); +void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); /* IBSS code */ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); @@ -950,6 +972,8 @@ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, struct cfg80211_ibss_params *params); int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); +void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); +void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); /* scan/BSS handling */ void ieee80211_scan_work(struct work_struct *work); @@ -960,6 +984,7 @@ int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, int ieee80211_scan_results(struct ieee80211_local *local, struct iw_request_info *info, char *buf, size_t len); +void ieee80211_scan_cancel(struct ieee80211_local *local); ieee80211_rx_result ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, @@ -1035,14 +1060,6 @@ int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, size_t len); -void ieee80211_chswitch_timer(unsigned long data); -void ieee80211_chswitch_work(struct work_struct *work); -void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata, - struct ieee80211_channel_sw_ie *sw_elem, - struct ieee80211_bss *bss); -void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, - u16 capab_info, u8 *pwr_constr_elem, - u8 pwr_constr_elem_len); /* Suspend/resume and hw reconfiguration */ int ieee80211_reconfig(struct ieee80211_local *local); @@ -1068,8 +1085,6 @@ static inline int __ieee80211_resume(struct ieee80211_hw *hw) /* utility functions/constants */ extern void *mac80211_wiphy_privid; /* for wiphy privid */ -extern const unsigned char rfc1042_header[6]; -extern const unsigned char bridge_tunnel_header[6]; u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, enum nl80211_iftype type); int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, diff --git a/net/mac80211/key.c b/net/mac80211/key.c index 827ea8e6ee0a..ce267565e180 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -320,7 +320,7 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, case ALG_TKIP: key->conf.iv_len = TKIP_IV_LEN; key->conf.icv_len = TKIP_ICV_LEN; - if (seq && seq_len == 6) { + if (seq) { for (i = 0; i < NUM_RX_DATA_QUEUES; i++) { key->u.tkip.rx[i].iv32 = get_unaligned_le32(&seq[2]); @@ -332,7 +332,7 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, case ALG_CCMP: key->conf.iv_len = CCMP_HDR_LEN; key->conf.icv_len = CCMP_MIC_LEN; - if (seq && seq_len == CCMP_PN_LEN) { + if (seq) { for (i = 0; i < NUM_RX_DATA_QUEUES; i++) for (j = 0; j < CCMP_PN_LEN; j++) key->u.ccmp.rx_pn[i][j] = @@ -342,7 +342,7 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, case ALG_AES_CMAC: key->conf.iv_len = 0; key->conf.icv_len = sizeof(struct ieee80211_mmie); - if (seq && seq_len == 6) + if (seq) for (j = 0; j < 6; j++) key->u.aes_cmac.rx_pn[j] = seq[6 - j - 1]; break; diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 76df5eabf268..e37770ced53c 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -219,18 +219,26 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, u32 changed) { struct ieee80211_local *local = sdata->local; + static const u8 zero[ETH_ALEN] = { 0 }; if (!changed) return; - if (sdata->vif.type == NL80211_IFTYPE_STATION) - sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; - else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + if (sdata->vif.type == NL80211_IFTYPE_STATION) { + /* + * While not associated, claim a BSSID of all-zeroes + * so that drivers don't do any weird things with the + * BSSID at that time. + */ + if (sdata->vif.bss_conf.assoc) + sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; + else + sdata->vif.bss_conf.bssid = zero; + } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; else if (sdata->vif.type == NL80211_IFTYPE_AP) sdata->vif.bss_conf.bssid = sdata->dev->dev_addr; else if (ieee80211_vif_is_mesh(&sdata->vif)) { - static const u8 zero[ETH_ALEN] = { 0 }; sdata->vif.bss_conf.bssid = zero; } else { WARN_ON(1); @@ -727,9 +735,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, * +-------------------------+ * */ - priv_size = ((sizeof(struct ieee80211_local) + - NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + - priv_data_len; + priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; wiphy = wiphy_new(&mac80211_config_ops, priv_size); @@ -746,9 +752,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, local->hw.wiphy = wiphy; - local->hw.priv = (char *)local + - ((sizeof(struct ieee80211_local) + - NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); + local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); BUG_ON(!ops->tx); BUG_ON(!ops->start); diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 9000b01a1671..fc712e60705d 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -21,6 +21,9 @@ #define CAPAB_OFFSET 17 #define ACCEPT_PLINKS 0x80 +#define TMR_RUNNING_HK 0 +#define TMR_RUNNING_MP 1 + int mesh_allocated; static struct kmem_cache *rm_cache; @@ -45,6 +48,12 @@ static void ieee80211_mesh_housekeeping_timer(unsigned long data) struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; ifmsh->housekeeping = true; + + if (local->quiescing) { + set_bit(TMR_RUNNING_HK, &ifmsh->timers_running); + return; + } + queue_work(local->hw.workqueue, &ifmsh->work); } @@ -343,6 +352,11 @@ static void ieee80211_mesh_path_timer(unsigned long data) struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; struct ieee80211_local *local = sdata->local; + if (local->quiescing) { + set_bit(TMR_RUNNING_MP, &ifmsh->timers_running); + return; + } + queue_work(local->hw.workqueue, &ifmsh->work); } @@ -424,6 +438,32 @@ static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata, round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL)); } +#ifdef CONFIG_PM +void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; + + /* might restart the timer but that doesn't matter */ + cancel_work_sync(&ifmsh->work); + + /* use atomic bitops in case both timers fire at the same time */ + + if (del_timer_sync(&ifmsh->housekeeping_timer)) + set_bit(TMR_RUNNING_HK, &ifmsh->timers_running); + if (del_timer_sync(&ifmsh->mesh_path_timer)) + set_bit(TMR_RUNNING_MP, &ifmsh->timers_running); +} + +void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; + + if (test_and_clear_bit(TMR_RUNNING_HK, &ifmsh->timers_running)) + add_timer(&ifmsh->housekeeping_timer); + if (test_and_clear_bit(TMR_RUNNING_MP, &ifmsh->timers_running)) + add_timer(&ifmsh->mesh_path_timer); +} +#endif void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) { diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h index d891d7ddccd7..c7d72819cdd2 100644 --- a/net/mac80211/mesh.h +++ b/net/mac80211/mesh.h @@ -191,12 +191,8 @@ struct mesh_rmc { #define PLINK_CATEGORY 30 #define MESH_PATH_SEL_CATEGORY 32 -/* Mesh Header Flags */ -#define IEEE80211S_FLAGS_AE 0x3 - /* Public interfaces */ /* Various */ -int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr); int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr, struct ieee80211_sub_if_data *sdata); int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr, @@ -267,6 +263,8 @@ void mesh_path_timer(unsigned long data); void mesh_path_flush_by_nexthop(struct sta_info *sta); void mesh_path_discard_frame(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata); +void mesh_path_quiesce(struct ieee80211_sub_if_data *sdata); +void mesh_path_restart(struct ieee80211_sub_if_data *sdata); #ifdef CONFIG_MAC80211_MESH extern int mesh_allocated; @@ -294,10 +292,20 @@ static inline void mesh_path_activate(struct mesh_path *mpath) void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local); +void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata); +void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata); +void mesh_plink_quiesce(struct sta_info *sta); +void mesh_plink_restart(struct sta_info *sta); #else #define mesh_allocated 0 static inline void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) {} +static inline void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata) +{} +static inline void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata) +{} +static inline void mesh_plink_quiesce(struct sta_info *sta) {} +static inline void mesh_plink_restart(struct sta_info *sta) {} #endif #endif /* IEEE80211S_H */ diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c index 60b35accda91..003cb470ac84 100644 --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -836,8 +836,14 @@ void mesh_path_timer(unsigned long data) mpath = rcu_dereference(mpath); if (!mpath) goto endmpathtimer; - spin_lock_bh(&mpath->state_lock); sdata = mpath->sdata; + + if (sdata->local->quiescing) { + rcu_read_unlock(); + return; + } + + spin_lock_bh(&mpath->state_lock); if (mpath->flags & MESH_PATH_RESOLVED || (!(mpath->flags & MESH_PATH_RESOLVING))) mpath->flags &= ~(MESH_PATH_RESOLVING | MESH_PATH_RESOLVED); diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index a8bbdeca013a..cb14253587f1 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -266,6 +266,11 @@ static void mesh_plink_timer(unsigned long data) */ sta = (struct sta_info *) data; + if (sta->sdata->local->quiescing) { + sta->plink_timer_was_running = true; + return; + } + spin_lock_bh(&sta->lock); if (sta->ignore_plink_timer) { sta->ignore_plink_timer = false; @@ -322,6 +327,22 @@ static void mesh_plink_timer(unsigned long data) } } +#ifdef CONFIG_PM +void mesh_plink_quiesce(struct sta_info *sta) +{ + if (del_timer_sync(&sta->plink_timer)) + sta->plink_timer_was_running = true; +} + +void mesh_plink_restart(struct sta_info *sta) +{ + if (sta->plink_timer_was_running) { + add_timer(&sta->plink_timer); + sta->plink_timer_was_running = false; + } +} +#endif + static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) { sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index ae030688771f..509469cb9265 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -33,10 +33,13 @@ #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) #define IEEE80211_ASSOC_MAX_TRIES 3 #define IEEE80211_MONITORING_INTERVAL (2 * HZ) -#define IEEE80211_PROBE_WAIT (HZ / 20) +#define IEEE80211_PROBE_WAIT (HZ / 5) #define IEEE80211_PROBE_IDLE_TIME (60 * HZ) #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) +#define TMR_RUNNING_TIMER 0 +#define TMR_RUNNING_CHANSW 1 + /* utils */ static int ecw2cw(int ecw) { @@ -121,10 +124,14 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - channel_type = NL80211_CHAN_HT40PLUS; + if (!(local->hw.conf.channel->flags & + IEEE80211_CHAN_NO_HT40PLUS)) + channel_type = NL80211_CHAN_HT40PLUS; break; case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - channel_type = NL80211_CHAN_HT40MINUS; + if (!(local->hw.conf.channel->flags & + IEEE80211_CHAN_NO_HT40MINUS)) + channel_type = NL80211_CHAN_HT40MINUS; break; } } @@ -349,13 +356,13 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { + if (flags & IEEE80211_CHAN_NO_HT40PLUS) { cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; cap &= ~IEEE80211_HT_CAP_SGI_40; } break; case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { + if (flags & IEEE80211_CHAN_NO_HT40MINUS) { cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; cap &= ~IEEE80211_HT_CAP_SGI_40; } @@ -482,6 +489,108 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local, ieee80211_tx_skb(sdata, skb, 0); } +/* spectrum management related things */ +static void ieee80211_chswitch_work(struct work_struct *work) +{ + struct ieee80211_sub_if_data *sdata = + container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); + struct ieee80211_bss *bss; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + if (!netif_running(sdata->dev)) + return; + + bss = ieee80211_rx_bss_get(sdata->local, ifmgd->bssid, + sdata->local->hw.conf.channel->center_freq, + ifmgd->ssid, ifmgd->ssid_len); + if (!bss) + goto exit; + + sdata->local->oper_channel = sdata->local->csa_channel; + /* XXX: shouldn't really modify cfg80211-owned data! */ + if (!ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL)) + bss->cbss.channel = sdata->local->oper_channel; + + ieee80211_rx_bss_put(sdata->local, bss); +exit: + ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; + ieee80211_wake_queues_by_reason(&sdata->local->hw, + IEEE80211_QUEUE_STOP_REASON_CSA); +} + +static void ieee80211_chswitch_timer(unsigned long data) +{ + struct ieee80211_sub_if_data *sdata = + (struct ieee80211_sub_if_data *) data; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + if (sdata->local->quiescing) { + set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); + return; + } + + queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work); +} + +void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, + struct ieee80211_channel_sw_ie *sw_elem, + struct ieee80211_bss *bss) +{ + struct ieee80211_channel *new_ch; + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num); + + if (ifmgd->state != IEEE80211_STA_MLME_ASSOCIATED) + return; + + if (sdata->local->sw_scanning || sdata->local->hw_scanning) + return; + + /* Disregard subsequent beacons if we are already running a timer + processing a CSA */ + + if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) + return; + + new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq); + if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) + return; + + sdata->local->csa_channel = new_ch; + + if (sw_elem->count <= 1) { + queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work); + } else { + ieee80211_stop_queues_by_reason(&sdata->local->hw, + IEEE80211_QUEUE_STOP_REASON_CSA); + ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; + mod_timer(&ifmgd->chswitch_timer, + jiffies + + msecs_to_jiffies(sw_elem->count * + bss->cbss.beacon_interval)); + } +} + +static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, + u16 capab_info, u8 *pwr_constr_elem, + u8 pwr_constr_elem_len) +{ + struct ieee80211_conf *conf = &sdata->local->hw.conf; + + if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT)) + return; + + /* Power constraint IE length should be 1 octet */ + if (pwr_constr_elem_len != 1) + return; + + if ((*pwr_constr_elem <= conf->channel->max_power) && + (*pwr_constr_elem != sdata->local->power_constr_level)) { + sdata->local->power_constr_level = *pwr_constr_elem; + ieee80211_hw_config(sdata->local, 0); + } +} + /* powersave */ static void ieee80211_enable_ps(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata) @@ -613,6 +722,9 @@ void ieee80211_dynamic_ps_timer(unsigned long data) { struct ieee80211_local *local = (void *) data; + if (local->quiescing) + return; + queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work); } @@ -865,6 +977,10 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, * changed or not. */ bss_info_changed |= BSS_CHANGED_BASIC_RATES; + + /* And the BSSID changed - we're associated now */ + bss_info_changed |= BSS_CHANGED_BSSID; + ieee80211_bss_info_change_notify(sdata, bss_info_changed); /* will be same as sdata */ @@ -1064,6 +1180,9 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, } ieee80211_hw_config(local, config_changed); + + /* And the BSSID changed -- not very interesting here */ + changed |= BSS_CHANGED_BSSID; ieee80211_bss_info_change_notify(sdata, changed); rcu_read_lock(); @@ -1270,8 +1389,8 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, ifmgd->ssid_len, NULL, 0); + mod_timer(&ifmgd->timer, jiffies + IEEE80211_PROBE_WAIT); goto unlock; - } if (time_after(jiffies, sta->last_rx + IEEE80211_PROBE_IDLE_TIME)) { @@ -1280,15 +1399,16 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) ifmgd->ssid_len, NULL, 0); } + if (!disassoc) + mod_timer(&ifmgd->timer, + jiffies + IEEE80211_MONITORING_INTERVAL); + unlock: rcu_read_unlock(); if (disassoc) ieee80211_set_disassoc(sdata, true, true, WLAN_REASON_PREV_AUTH_NOT_VALID); - else - mod_timer(&ifmgd->timer, jiffies + - IEEE80211_MONITORING_INTERVAL); } @@ -1732,7 +1852,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN) == 0)) { struct ieee80211_channel_sw_ie *sw_elem = (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; - ieee80211_process_chanswitch(sdata, sw_elem, bss); + ieee80211_sta_process_chanswitch(sdata, sw_elem, bss); } ieee80211_rx_bss_put(local, bss); @@ -1820,6 +1940,16 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0) return; + if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) { +#ifdef CONFIG_MAC80211_VERBOSE_DEBUG + if (net_ratelimit()) { + printk(KERN_DEBUG "%s: cancelling probereq poll due " + "to a received beacon\n", sdata->dev->name); + } +#endif + ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; + } + ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, len - baselen, &elems, @@ -1829,16 +1959,13 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, directed_tim = ieee80211_check_tim(elems.tim, elems.tim_len, ifmgd->aid); - ncrc = crc32_be(ncrc, (void *)&directed_tim, sizeof(directed_tim)); + if (ncrc != ifmgd->beacon_crc) { + ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, + true); - if (ncrc == ifmgd->beacon_crc) - return; - ifmgd->beacon_crc = ncrc; - - ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); - - ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, - elems.wmm_param_len); + ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, + elems.wmm_param_len); + } if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { if (directed_tim) { @@ -1863,6 +1990,10 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, } } + if (ncrc == ifmgd->beacon_crc) + return; + ifmgd->beacon_crc = ncrc; + if (elems.erp_info && elems.erp_info_len >= 1) { erp_valid = true; erp_value = elems.erp_info[0]; @@ -1997,6 +2128,11 @@ static void ieee80211_sta_timer(unsigned long data) struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; + if (local->quiescing) { + set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); + return; + } + set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); queue_work(local->hw.workqueue, &ifmgd->work); } @@ -2129,6 +2265,17 @@ static void ieee80211_sta_work(struct work_struct *work) if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) return; + + /* + * Nothing should have been stuffed into the workqueue during + * the suspend->resume cycle. If this WARN is seen then there + * is a bug with either the driver suspend or something in + * mac80211 stuffing into the workqueue which we haven't yet + * cleared during mac80211's suspend cycle. + */ + if (WARN_ON(local->suspended)) + return; + ifmgd = &sdata->u.mgd; while ((skb = skb_dequeue(&ifmgd->skb_queue))) @@ -2196,6 +2343,38 @@ static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) } } +#ifdef CONFIG_PM +void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + /* + * we need to use atomic bitops for the running bits + * only because both timers might fire at the same + * time -- the code here is properly synchronised. + */ + + cancel_work_sync(&ifmgd->work); + cancel_work_sync(&ifmgd->beacon_loss_work); + if (del_timer_sync(&ifmgd->timer)) + set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); + + cancel_work_sync(&ifmgd->chswitch_work); + if (del_timer_sync(&ifmgd->chswitch_timer)) + set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); +} + +void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + + if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running)) + add_timer(&ifmgd->timer); + if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running)) + add_timer(&ifmgd->chswitch_timer); +} +#endif + /* interface setup */ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) { @@ -2310,9 +2489,6 @@ int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) ifmgd->flags &= ~IEEE80211_STA_BSSID_SET; } - if (netif_running(sdata->dev)) - ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); - return ieee80211_sta_commit(sdata); } @@ -2321,6 +2497,13 @@ int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + if (len == 0 && ifmgd->extra_ie_len == 0) + return -EALREADY; + + if (len == ifmgd->extra_ie_len && ifmgd->extra_ie && + memcmp(ifmgd->extra_ie, ie, len) == 0) + return -EALREADY; + kfree(ifmgd->extra_ie); if (len == 0) { ifmgd->extra_ie = NULL; diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c index 9d3d89abbb57..7a549f9deb96 100644 --- a/net/mac80211/pm.c +++ b/net/mac80211/pm.c @@ -2,6 +2,7 @@ #include <net/rtnetlink.h> #include "ieee80211_i.h" +#include "mesh.h" #include "driver-ops.h" #include "led.h" @@ -13,11 +14,30 @@ int __ieee80211_suspend(struct ieee80211_hw *hw) struct sta_info *sta; unsigned long flags; + ieee80211_scan_cancel(local); + ieee80211_stop_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_SUSPEND); + /* flush out all packets */ + synchronize_net(); + + local->quiescing = true; + /* make quiescing visible to timers everywhere */ + mb(); + flush_workqueue(local->hw.workqueue); + /* Don't try to run timers while suspended. */ + del_timer_sync(&local->sta_cleanup); + + /* + * Note that this particular timer doesn't need to be + * restarted at resume. + */ + cancel_work_sync(&local->dynamic_ps_enable_work); + del_timer_sync(&local->dynamic_ps_timer); + /* disable keys */ list_for_each_entry(sdata, &local->interfaces, list) ieee80211_disable_keys(sdata); @@ -35,10 +55,20 @@ int __ieee80211_suspend(struct ieee80211_hw *hw) rcu_read_unlock(); + /* flush again, in case driver queued work */ + flush_workqueue(local->hw.workqueue); + + /* stop hardware - this must stop RX */ + if (local->open_count) { + ieee80211_led_radio(local, false); + drv_stop(local); + } + /* remove STAs */ - if (local->ops->sta_notify) { - spin_lock_irqsave(&local->sta_lock, flags); - list_for_each_entry(sta, &local->sta_list, list) { + spin_lock_irqsave(&local->sta_lock, flags); + list_for_each_entry(sta, &local->sta_list, list) { + if (local->ops->sta_notify) { + sdata = sta->sdata; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, @@ -47,29 +77,43 @@ int __ieee80211_suspend(struct ieee80211_hw *hw) drv_sta_notify(local, &sdata->vif, STA_NOTIFY_REMOVE, &sta->sta); } - spin_unlock_irqrestore(&local->sta_lock, flags); + + mesh_plink_quiesce(sta); } + spin_unlock_irqrestore(&local->sta_lock, flags); /* remove all interfaces */ list_for_each_entry(sdata, &local->interfaces, list) { - if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && - sdata->vif.type != NL80211_IFTYPE_MONITOR && - netif_running(sdata->dev)) { - conf.vif = &sdata->vif; - conf.type = sdata->vif.type; - conf.mac_addr = sdata->dev->dev_addr; - drv_remove_interface(local, &conf); + switch(sdata->vif.type) { + case NL80211_IFTYPE_STATION: + ieee80211_sta_quiesce(sdata); + break; + case NL80211_IFTYPE_ADHOC: + ieee80211_ibss_quiesce(sdata); + break; + case NL80211_IFTYPE_MESH_POINT: + ieee80211_mesh_quiesce(sdata); + break; + case NL80211_IFTYPE_AP_VLAN: + case NL80211_IFTYPE_MONITOR: + /* don't tell driver about this */ + continue; + default: + break; } - } - /* flush again, in case driver queued work */ - flush_workqueue(local->hw.workqueue); + if (!netif_running(sdata->dev)) + continue; - /* stop hardware */ - if (local->open_count) { - ieee80211_led_radio(local, false); - drv_stop(local); + conf.vif = &sdata->vif; + conf.type = sdata->vif.type; + conf.mac_addr = sdata->dev->dev_addr; + drv_remove_interface(local, &conf); } + + local->suspended = true; + local->quiescing = false; + return 0; } diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index f962bd1b16e2..6a9b8e63a6bf 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1247,93 +1247,12 @@ ieee80211_drop_unencrypted(struct ieee80211_rx_data *rx, __le16 fc) } static int -ieee80211_data_to_8023(struct ieee80211_rx_data *rx) +__ieee80211_data_to_8023(struct ieee80211_rx_data *rx) { struct net_device *dev = rx->dev; - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data; - u16 hdrlen, ethertype; - u8 *payload; - u8 dst[ETH_ALEN]; - u8 src[ETH_ALEN] __aligned(2); - struct sk_buff *skb = rx->skb; struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - if (unlikely(!ieee80211_is_data_present(hdr->frame_control))) - return -1; - - hdrlen = ieee80211_hdrlen(hdr->frame_control); - - /* convert IEEE 802.11 header + possible LLC headers into Ethernet - * header - * IEEE 802.11 address fields: - * ToDS FromDS Addr1 Addr2 Addr3 Addr4 - * 0 0 DA SA BSSID n/a - * 0 1 DA BSSID SA n/a - * 1 0 BSSID SA DA n/a - * 1 1 RA TA DA SA - */ - memcpy(dst, ieee80211_get_DA(hdr), ETH_ALEN); - memcpy(src, ieee80211_get_SA(hdr), ETH_ALEN); - - switch (hdr->frame_control & - cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) { - case cpu_to_le16(IEEE80211_FCTL_TODS): - if (unlikely(sdata->vif.type != NL80211_IFTYPE_AP && - sdata->vif.type != NL80211_IFTYPE_AP_VLAN)) - return -1; - break; - case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS): - if (unlikely(sdata->vif.type != NL80211_IFTYPE_WDS && - sdata->vif.type != NL80211_IFTYPE_MESH_POINT)) - return -1; - if (ieee80211_vif_is_mesh(&sdata->vif)) { - struct ieee80211s_hdr *meshdr = (struct ieee80211s_hdr *) - (skb->data + hdrlen); - hdrlen += ieee80211_get_mesh_hdrlen(meshdr); - if (meshdr->flags & MESH_FLAGS_AE_A5_A6) { - memcpy(dst, meshdr->eaddr1, ETH_ALEN); - memcpy(src, meshdr->eaddr2, ETH_ALEN); - } - } - break; - case cpu_to_le16(IEEE80211_FCTL_FROMDS): - if (sdata->vif.type != NL80211_IFTYPE_STATION || - (is_multicast_ether_addr(dst) && - !compare_ether_addr(src, dev->dev_addr))) - return -1; - break; - case cpu_to_le16(0): - if (sdata->vif.type != NL80211_IFTYPE_ADHOC) - return -1; - break; - } - - if (unlikely(skb->len - hdrlen < 8)) - return -1; - - payload = skb->data + hdrlen; - ethertype = (payload[6] << 8) | payload[7]; - - if (likely((compare_ether_addr(payload, rfc1042_header) == 0 && - ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || - compare_ether_addr(payload, bridge_tunnel_header) == 0)) { - /* remove RFC1042 or Bridge-Tunnel encapsulation and - * replace EtherType */ - skb_pull(skb, hdrlen + 6); - memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN); - memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN); - } else { - struct ethhdr *ehdr; - __be16 len; - - skb_pull(skb, hdrlen); - len = htons(skb->len); - ehdr = (struct ethhdr *) skb_push(skb, sizeof(struct ethhdr)); - memcpy(ehdr->h_dest, dst, ETH_ALEN); - memcpy(ehdr->h_source, src, ETH_ALEN); - ehdr->h_proto = len; - } - return 0; + return ieee80211_data_to_8023(rx->skb, dev->dev_addr, sdata->vif.type); } /* @@ -1472,7 +1391,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx) if (!(rx->flags & IEEE80211_RX_AMSDU)) return RX_CONTINUE; - err = ieee80211_data_to_8023(rx); + err = __ieee80211_data_to_8023(rx); if (unlikely(err)) return RX_DROP_UNUSABLE; @@ -1658,7 +1577,7 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx) if (unlikely(!ieee80211_is_data_present(hdr->frame_control))) return RX_DROP_MONITOR; - err = ieee80211_data_to_8023(rx); + err = __ieee80211_data_to_8023(rx); if (unlikely(err)) return RX_DROP_UNUSABLE; @@ -1846,6 +1765,9 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) sizeof(mgmt->u.action.u.chan_switch))) return RX_DROP_MONITOR; + if (sdata->vif.type != NL80211_IFTYPE_STATION) + return RX_DROP_MONITOR; + if (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN)) return RX_DROP_MONITOR; @@ -1856,7 +1778,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) if (!bss) return RX_DROP_MONITOR; - ieee80211_process_chanswitch(sdata, + ieee80211_sta_process_chanswitch(sdata, &mgmt->u.action.u.chan_switch.sw_elem, bss); ieee80211_rx_bss_put(local, bss); break; diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index e65d74ba404b..2a8d09ad17ff 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -631,3 +631,21 @@ int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, mutex_unlock(&local->scan_mtx); return ret; } + +void ieee80211_scan_cancel(struct ieee80211_local *local) +{ + bool swscan; + + cancel_delayed_work_sync(&local->scan_work); + + /* + * Only call this function when a scan can't be + * queued -- mostly at suspend under RTNL. + */ + mutex_lock(&local->scan_mtx); + swscan = local->sw_scanning; + mutex_unlock(&local->scan_mtx); + + if (swscan) + ieee80211_scan_completed(&local->hw, true); +} diff --git a/net/mac80211/spectmgmt.c b/net/mac80211/spectmgmt.c index 48bf78e7fa7a..68953033403d 100644 --- a/net/mac80211/spectmgmt.c +++ b/net/mac80211/spectmgmt.c @@ -84,104 +84,3 @@ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, mgmt->sa, mgmt->bssid, mgmt->u.action.u.measurement.dialog_token); } - -void ieee80211_chswitch_work(struct work_struct *work) -{ - struct ieee80211_sub_if_data *sdata = - container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); - struct ieee80211_bss *bss; - struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - - if (!netif_running(sdata->dev)) - return; - - bss = ieee80211_rx_bss_get(sdata->local, ifmgd->bssid, - sdata->local->hw.conf.channel->center_freq, - ifmgd->ssid, ifmgd->ssid_len); - if (!bss) - goto exit; - - sdata->local->oper_channel = sdata->local->csa_channel; - /* XXX: shouldn't really modify cfg80211-owned data! */ - if (!ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL)) - bss->cbss.channel = sdata->local->oper_channel; - - ieee80211_rx_bss_put(sdata->local, bss); -exit: - ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; - ieee80211_wake_queues_by_reason(&sdata->local->hw, - IEEE80211_QUEUE_STOP_REASON_CSA); -} - -void ieee80211_chswitch_timer(unsigned long data) -{ - struct ieee80211_sub_if_data *sdata = - (struct ieee80211_sub_if_data *) data; - struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - - queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work); -} - -void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata, - struct ieee80211_channel_sw_ie *sw_elem, - struct ieee80211_bss *bss) -{ - struct ieee80211_channel *new_ch; - struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num); - - /* FIXME: Handle ADHOC later */ - if (sdata->vif.type != NL80211_IFTYPE_STATION) - return; - - if (ifmgd->state != IEEE80211_STA_MLME_ASSOCIATED) - return; - - if (sdata->local->sw_scanning || sdata->local->hw_scanning) - return; - - /* Disregard subsequent beacons if we are already running a timer - processing a CSA */ - - if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) - return; - - new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq); - if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) - return; - - sdata->local->csa_channel = new_ch; - - if (sw_elem->count <= 1) { - queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work); - } else { - ieee80211_stop_queues_by_reason(&sdata->local->hw, - IEEE80211_QUEUE_STOP_REASON_CSA); - ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; - mod_timer(&ifmgd->chswitch_timer, - jiffies + - msecs_to_jiffies(sw_elem->count * - bss->cbss.beacon_interval)); - } -} - -void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, - u16 capab_info, u8 *pwr_constr_elem, - u8 pwr_constr_elem_len) -{ - struct ieee80211_conf *conf = &sdata->local->hw.conf; - - if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT)) - return; - - /* Power constraint IE length should be 1 octet */ - if (pwr_constr_elem_len != 1) - return; - - if ((*pwr_constr_elem <= conf->channel->max_power) && - (*pwr_constr_elem != sdata->local->power_constr_level)) { - sdata->local->power_constr_level = *pwr_constr_elem; - ieee80211_hw_config(sdata->local, 0); - } -} - diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index a98ea273a155..d5611d8fd0d6 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -293,6 +293,9 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, skb_queue_head_init(&sta->ps_tx_buf); skb_queue_head_init(&sta->tx_filtered); + for (i = 0; i < NUM_RX_DATA_QUEUES; i++) + sta->last_seq_ctrl[i] = cpu_to_le16(USHORT_MAX); + #ifdef CONFIG_MAC80211_VERBOSE_DEBUG printk(KERN_DEBUG "%s: Allocated STA %pM\n", wiphy_name(local->hw.wiphy), sta->sta.addr); @@ -608,6 +611,9 @@ static void sta_info_cleanup(unsigned long data) sta_info_cleanup_expire_buffered(local, sta); rcu_read_unlock(); + if (local->quiescing) + return; + local->sta_cleanup.expires = round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL); add_timer(&local->sta_cleanup); diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index 164b16cbe0a5..49a1a1f76511 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -216,6 +216,7 @@ struct sta_ampdu_mlme { * @plink_state: peer link state * @plink_timeout: timeout of peer link * @plink_timer: peer link watch timer + * @plink_timer_was_running: used by suspend/resume to restore timers * @debugfs: debug filesystem info * @sta: station information we share with the driver */ @@ -293,6 +294,7 @@ struct sta_info { __le16 reason; u8 plink_retries; bool ignore_plink_timer; + bool plink_timer_was_running; enum plink_state plink_state; u32 plink_timeout; struct timer_list plink_timer; diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 8f68bf9746d0..a910148b8228 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -872,6 +872,8 @@ ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data *tx) do { hdr = (void *) skb->data; + if (unlikely(ieee80211_is_pspoll(hdr->frame_control))) + break; /* must not overwrite AID */ next_len = skb->next ? skb->next->len : 0; group_addr = is_multicast_ether_addr(hdr->addr1); diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 0689a8fbd1e6..949d857debd8 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -35,15 +35,6 @@ /* privid for wiphys to determine whether they belong to us or not */ void *mac80211_wiphy_privid = &mac80211_wiphy_privid; -/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ -/* Ethernet-II snap header (RFC1042 for most EtherTypes) */ -const unsigned char rfc1042_header[] __aligned(2) = - { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; - -/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ -const unsigned char bridge_tunnel_header[] __aligned(2) = - { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; - struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) { struct ieee80211_local *local; @@ -103,70 +94,6 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, return NULL; } -unsigned int ieee80211_hdrlen(__le16 fc) -{ - unsigned int hdrlen = 24; - - if (ieee80211_is_data(fc)) { - if (ieee80211_has_a4(fc)) - hdrlen = 30; - if (ieee80211_is_data_qos(fc)) - hdrlen += IEEE80211_QOS_CTL_LEN; - goto out; - } - - if (ieee80211_is_ctl(fc)) { - /* - * ACK and CTS are 10 bytes, all others 16. To see how - * to get this condition consider - * subtype mask: 0b0000000011110000 (0x00F0) - * ACK subtype: 0b0000000011010000 (0x00D0) - * CTS subtype: 0b0000000011000000 (0x00C0) - * bits that matter: ^^^ (0x00E0) - * value of those: 0b0000000011000000 (0x00C0) - */ - if ((fc & cpu_to_le16(0x00E0)) == cpu_to_le16(0x00C0)) - hdrlen = 10; - else - hdrlen = 16; - } -out: - return hdrlen; -} -EXPORT_SYMBOL(ieee80211_hdrlen); - -unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb) -{ - const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *)skb->data; - unsigned int hdrlen; - - if (unlikely(skb->len < 10)) - return 0; - hdrlen = ieee80211_hdrlen(hdr->frame_control); - if (unlikely(hdrlen > skb->len)) - return 0; - return hdrlen; -} -EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb); - -int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr) -{ - int ae = meshhdr->flags & IEEE80211S_FLAGS_AE; - /* 7.1.3.5a.2 */ - switch (ae) { - case 0: - return 6; - case 1: - return 12; - case 2: - return 18; - case 3: - return 24; - default: - return 6; - } -} - void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) { struct sk_buff *skb = tx->skb; @@ -1034,6 +961,13 @@ int ieee80211_reconfig(struct ieee80211_local *local) struct sta_info *sta; unsigned long flags; int res; + bool from_suspend = local->suspended; + + /* + * We're going to start the hardware, at that point + * we are no longer suspended and can RX frames. + */ + local->suspended = false; /* restart hardware */ if (local->open_count) { @@ -1058,6 +992,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) if (local->ops->sta_notify) { spin_lock_irqsave(&local->sta_lock, flags); list_for_each_entry(sta, &local->sta_list, list) { + sdata = sta->sdata; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, @@ -1128,5 +1063,40 @@ int ieee80211_reconfig(struct ieee80211_local *local) ieee80211_wake_queues_by_reason(hw, IEEE80211_QUEUE_STOP_REASON_SUSPEND); + /* + * If this is for hw restart things are still running. + * We may want to change that later, however. + */ + if (!from_suspend) + return 0; + +#ifdef CONFIG_PM + local->suspended = false; + + list_for_each_entry(sdata, &local->interfaces, list) { + switch(sdata->vif.type) { + case NL80211_IFTYPE_STATION: + ieee80211_sta_restart(sdata); + break; + case NL80211_IFTYPE_ADHOC: + ieee80211_ibss_restart(sdata); + break; + case NL80211_IFTYPE_MESH_POINT: + ieee80211_mesh_restart(sdata); + break; + default: + break; + } + } + + add_timer(&local->sta_cleanup); + + spin_lock_irqsave(&local->sta_lock, flags); + list_for_each_entry(sta, &local->sta_list, list) + mesh_plink_restart(sta); + spin_unlock_irqrestore(&local->sta_lock, flags); +#else + WARN_ON(1); +#endif return 0; } diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c index c14394744a9c..a01154e127f0 100644 --- a/net/mac80211/wext.c +++ b/net/mac80211/wext.c @@ -37,12 +37,13 @@ static int ieee80211_ioctl_siwgenie(struct net_device *dev, if (sdata->vif.type == NL80211_IFTYPE_STATION) { int ret = ieee80211_sta_set_extra_ie(sdata, extra, data->length); - if (ret) + if (ret && ret != -EALREADY) return ret; sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL; sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME; sdata->u.mgd.flags &= ~IEEE80211_STA_CONTROL_PORT; - ieee80211_sta_req_auth(sdata); + if (ret != -EALREADY) + ieee80211_sta_req_auth(sdata); return 0; } diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c index 45b74f38b867..694343b9102b 100644 --- a/net/mac80211/wme.c +++ b/net/mac80211/wme.c @@ -23,34 +23,6 @@ */ const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 }; -static const char llc_ip_hdr[8] = {0xAA, 0xAA, 0x3, 0, 0, 0, 0x08, 0}; - -/* Given a data frame determine the 802.1p/1d tag to use. */ -static unsigned int classify_1d(struct sk_buff *skb) -{ - unsigned int dscp; - - /* skb->priority values from 256->263 are magic values to - * directly indicate a specific 802.1d priority. This is used - * to allow 802.1d priority to be passed directly in from VLAN - * tags, etc. - */ - if (skb->priority >= 256 && skb->priority <= 263) - return skb->priority - 256; - - switch (skb->protocol) { - case htons(ETH_P_IP): - dscp = ip_hdr(skb)->tos & 0xfc; - break; - - default: - return 0; - } - - return dscp >> 5; -} - - static int wme_downgrade_ac(struct sk_buff *skb) { switch (skb->priority) { @@ -94,7 +66,7 @@ static u16 classify80211(struct ieee80211_local *local, struct sk_buff *skb) /* use the data classifier to determine what 802.1d tag the * data frame has */ - skb->priority = classify_1d(skb); + skb->priority = cfg80211_classify8021d(skb); /* in case we are a client verify acm is not set for this ac */ while (unlikely(local->wmm_acm & BIT(skb->priority))) { diff --git a/net/rxrpc/ar-connection.c b/net/rxrpc/ar-connection.c index 0f1218b8d289..67e38a056240 100644 --- a/net/rxrpc/ar-connection.c +++ b/net/rxrpc/ar-connection.c @@ -343,9 +343,9 @@ static int rxrpc_connect_exclusive(struct rxrpc_sock *rx, /* not yet present - create a candidate for a new connection * and then redo the check */ conn = rxrpc_alloc_connection(gfp); - if (IS_ERR(conn)) { - _leave(" = %ld", PTR_ERR(conn)); - return PTR_ERR(conn); + if (!conn) { + _leave(" = -ENOMEM"); + return -ENOMEM; } conn->trans = trans; @@ -508,9 +508,9 @@ int rxrpc_connect_call(struct rxrpc_sock *rx, /* not yet present - create a candidate for a new connection and then * redo the check */ candidate = rxrpc_alloc_connection(gfp); - if (IS_ERR(candidate)) { - _leave(" = %ld", PTR_ERR(candidate)); - return PTR_ERR(candidate); + if (!candidate) { + _leave(" = -ENOMEM"); + return -ENOMEM; } candidate->trans = trans; diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c index 428a5ef5b944..a886496bdc3a 100644 --- a/net/sched/sch_teql.c +++ b/net/sched/sch_teql.c @@ -308,6 +308,7 @@ restart: if (!netif_tx_queue_stopped(slave_txq) && !netif_tx_queue_frozen(slave_txq) && slave_ops->ndo_start_xmit(skb, slave) == 0) { + txq_trans_update(slave_txq); __netif_tx_unlock(slave_txq); master->slaves = NEXT_SLAVE(q); netif_wake_queue(dev); diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig index 3c3bc9e579ed..45005497c634 100644 --- a/net/wireless/Kconfig +++ b/net/wireless/Kconfig @@ -10,6 +10,14 @@ config CFG80211_REG_DEBUG If unsure, say N. +config CFG80211_DEBUGFS + bool "cfg80211 DebugFS entries" + depends on CFG80211 && DEBUG_FS + ---help--- + You can enable this if you want to debugfs entries for cfg80211. + + If unsure, say N. + config WIRELESS_OLD_REGULATORY bool "Old wireless static regulatory definitions" default n diff --git a/net/wireless/Makefile b/net/wireless/Makefile index 14ea01c4a103..f78c4832a9ca 100644 --- a/net/wireless/Makefile +++ b/net/wireless/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_LIB80211_CRYPT_CCMP) += lib80211_crypt_ccmp.o obj-$(CONFIG_LIB80211_CRYPT_TKIP) += lib80211_crypt_tkip.o cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o mlme.o ibss.o +cfg80211-$(CONFIG_CFG80211_DEBUGFS) += debugfs.o cfg80211-$(CONFIG_WIRELESS_EXT) += wext-compat.o ccflags-y += -D__CHECK_ENDIAN__ diff --git a/net/wireless/core.c b/net/wireless/core.c index 47c20eb0c04d..a5dbea1da476 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -17,6 +17,7 @@ #include "nl80211.h" #include "core.h" #include "sysfs.h" +#include "debugfs.h" /* name for sysfs, %d is appended */ #define PHY_NAME "phy" @@ -228,7 +229,7 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, /* exported functions */ -struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv) +struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) { static int wiphy_counter; @@ -375,6 +376,8 @@ int wiphy_register(struct wiphy *wiphy) nl80211_send_reg_change_event(&request); } + cfg80211_debugfs_drv_add(drv); + res = 0; out_unlock: mutex_unlock(&cfg80211_mutex); @@ -405,6 +408,8 @@ void wiphy_unregister(struct wiphy *wiphy) /* unlock again before freeing */ mutex_unlock(&drv->mtx); + cfg80211_debugfs_drv_del(drv); + /* If this device got a regulatory hint tell core its * free to listen now to a new shiny device regulatory hint */ reg_device_remove(wiphy); diff --git a/net/wireless/core.h b/net/wireless/core.h index f14b6c5f4221..ab512bcd8153 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -10,12 +10,13 @@ #include <linux/netdevice.h> #include <linux/kref.h> #include <linux/rbtree.h> +#include <linux/debugfs.h> #include <net/genetlink.h> #include <net/cfg80211.h> #include "reg.h" struct cfg80211_registered_device { - struct cfg80211_ops *ops; + const struct cfg80211_ops *ops; struct list_head list; /* we hold this mutex during any call so that * we cannot do multiple calls at once, and also @@ -50,6 +51,17 @@ struct cfg80211_registered_device { struct cfg80211_scan_request *scan_req; /* protected by RTNL */ unsigned long suspend_at; +#ifdef CONFIG_CFG80211_DEBUGFS + /* Debugfs entries */ + struct wiphy_debugfsdentries { + struct dentry *rts_threshold; + struct dentry *fragmentation_threshold; + struct dentry *short_retry_limit; + struct dentry *long_retry_limit; + struct dentry *ht40allow_map; + } debugfs; +#endif + /* must be last because of the way we do wiphy_priv(), * and it should at least be aligned to NETDEV_ALIGN */ struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN))); diff --git a/net/wireless/debugfs.c b/net/wireless/debugfs.c new file mode 100644 index 000000000000..679ddfcec1ee --- /dev/null +++ b/net/wireless/debugfs.c @@ -0,0 +1,131 @@ +/* + * cfg80211 debugfs + * + * Copyright 2009 Luis R. Rodriguez <lrodriguez@atheros.com> + * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "core.h" +#include "debugfs.h" + +static int cfg80211_open_file_generic(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \ +static ssize_t name## _read(struct file *file, char __user *userbuf, \ + size_t count, loff_t *ppos) \ +{ \ + struct wiphy *wiphy= file->private_data; \ + char buf[buflen]; \ + int res; \ + \ + res = scnprintf(buf, buflen, fmt "\n", ##value); \ + return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ +} \ + \ +static const struct file_operations name## _ops = { \ + .read = name## _read, \ + .open = cfg80211_open_file_generic, \ +}; + +DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d", + wiphy->rts_threshold) +DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d", + wiphy->frag_threshold); +DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d", + wiphy->retry_short) +DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", + wiphy->retry_long); + +static int ht_print_chan(struct ieee80211_channel *chan, + char *buf, int buf_size, int offset) +{ + if (WARN_ON(offset > buf_size)) + return 0; + + if (chan->flags & IEEE80211_CHAN_DISABLED) + return snprintf(buf + offset, + buf_size - offset, + "%d Disabled\n", + chan->center_freq); + + return snprintf(buf + offset, + buf_size - offset, + "%d HT40 %c%c\n", + chan->center_freq, + (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) ? ' ' : '-', + (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) ? ' ' : '+'); +} + +static ssize_t ht40allow_map_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct wiphy *wiphy = file->private_data; + char *buf; + unsigned int offset = 0, buf_size = PAGE_SIZE, i, r; + enum ieee80211_band band; + struct ieee80211_supported_band *sband; + + buf = kzalloc(buf_size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + mutex_lock(&cfg80211_mutex); + + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + sband = wiphy->bands[band]; + if (!sband) + continue; + for (i = 0; i < sband->n_channels; i++) + offset += ht_print_chan(&sband->channels[i], + buf, buf_size, offset); + } + + mutex_unlock(&cfg80211_mutex); + + r = simple_read_from_buffer(user_buf, count, ppos, buf, offset); + + kfree(buf); + + return r; +} + +static const struct file_operations ht40allow_map_ops = { + .read = ht40allow_map_read, + .open = cfg80211_open_file_generic, +}; + +#define DEBUGFS_ADD(name) \ + drv->debugfs.name = debugfs_create_file(#name, S_IRUGO, phyd, \ + &drv->wiphy, &name## _ops); +#define DEBUGFS_DEL(name) \ + debugfs_remove(drv->debugfs.name); \ + drv->debugfs.name = NULL; + +void cfg80211_debugfs_drv_add(struct cfg80211_registered_device *drv) +{ + struct dentry *phyd = drv->wiphy.debugfsdir; + + DEBUGFS_ADD(rts_threshold); + DEBUGFS_ADD(fragmentation_threshold); + DEBUGFS_ADD(short_retry_limit); + DEBUGFS_ADD(long_retry_limit); + DEBUGFS_ADD(ht40allow_map); +} + +void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv) +{ + DEBUGFS_DEL(rts_threshold); + DEBUGFS_DEL(fragmentation_threshold); + DEBUGFS_DEL(short_retry_limit); + DEBUGFS_DEL(long_retry_limit); + DEBUGFS_DEL(ht40allow_map); +} diff --git a/net/wireless/debugfs.h b/net/wireless/debugfs.h new file mode 100644 index 000000000000..c226983ae66b --- /dev/null +++ b/net/wireless/debugfs.h @@ -0,0 +1,14 @@ +#ifndef __CFG80211_DEBUGFS_H +#define __CFG80211_DEBUGFS_H + +#ifdef CONFIG_CFG80211_DEBUGFS +void cfg80211_debugfs_drv_add(struct cfg80211_registered_device *drv); +void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv); +#else +static inline +void cfg80211_debugfs_drv_add(struct cfg80211_registered_device *drv) {} +static inline +void cfg80211_debugfs_drv_del(struct cfg80211_registered_device *drv) {} +#endif + +#endif /* __CFG80211_DEBUGFS_H */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index a3a152f55dd0..4b4d3c8a1aed 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -57,7 +57,7 @@ static int get_drv_dev_by_info_ifindex(struct nlattr **attrs, static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, - .len = BUS_ID_SIZE-1 }, + .len = 20-1 }, [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, @@ -77,6 +77,7 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, + [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, @@ -492,7 +493,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; struct ieee80211_channel *chan; struct ieee80211_sta_ht_cap *ht_cap; - u32 freq, sec_freq; + u32 freq; if (!rdev->ops->set_channel) { result = -EOPNOTSUPP; @@ -518,33 +519,28 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) goto bad_res; - if (channel_type == NL80211_CHAN_HT40MINUS) - sec_freq = freq - 20; - else if (channel_type == NL80211_CHAN_HT40PLUS) - sec_freq = freq + 20; - else - sec_freq = 0; - - ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap; - - /* no HT capabilities */ - if (channel_type != NL80211_CHAN_NO_HT && - !ht_cap->ht_supported) + if (channel_type == NL80211_CHAN_HT40MINUS && + (chan->flags & IEEE80211_CHAN_NO_HT40MINUS)) + goto bad_res; + else if (channel_type == NL80211_CHAN_HT40PLUS && + (chan->flags & IEEE80211_CHAN_NO_HT40PLUS)) goto bad_res; - if (sec_freq) { - struct ieee80211_channel *schan; + /* + * At this point we know if that if HT40 was requested + * we are allowed to use it and the extension channel + * exists. + */ + + ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap; - /* no 40 MHz capabilities */ + /* no HT capabilities or intolerant */ + if (channel_type != NL80211_CHAN_NO_HT) { + if (!ht_cap->ht_supported) + goto bad_res; if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) || (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT)) goto bad_res; - - schan = ieee80211_get_channel(&rdev->wiphy, sec_freq); - - /* Secondary channel not allowed */ - if (!schan || schan->flags & IEEE80211_CHAN_DISABLED) - goto bad_res; } result = rdev->ops->set_channel(&rdev->wiphy, chan, @@ -2571,18 +2567,24 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) rem_reg_rules) { num_rules++; if (num_rules > NL80211_MAX_SUPP_REG_RULES) - goto bad_reg; + return -EINVAL; } - if (!reg_is_valid_request(alpha2)) - return -EINVAL; + mutex_lock(&cfg80211_mutex); + + if (!reg_is_valid_request(alpha2)) { + r = -EINVAL; + goto bad_reg; + } size_of_regd = sizeof(struct ieee80211_regdomain) + (num_rules * sizeof(struct ieee80211_reg_rule)); rd = kzalloc(size_of_regd, GFP_KERNEL); - if (!rd) - return -ENOMEM; + if (!rd) { + r = -ENOMEM; + goto bad_reg; + } rd->n_reg_rules = num_rules; rd->alpha2[0] = alpha2[0]; @@ -2599,20 +2601,24 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) rule_idx++; - if (rule_idx > NL80211_MAX_SUPP_REG_RULES) + if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { + r = -EINVAL; goto bad_reg; + } } BUG_ON(rule_idx != num_rules); - mutex_lock(&cfg80211_mutex); r = set_regdom(rd); + mutex_unlock(&cfg80211_mutex); + return r; bad_reg: + mutex_unlock(&cfg80211_mutex); kfree(rd); - return -EINVAL; + return r; } static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 537af62ec42b..f87ac1df2df5 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -48,12 +48,6 @@ static struct regulatory_request *last_request; /* To trigger userspace events */ static struct platform_device *reg_pdev; -/* Keep the ordering from large to small */ -static u32 supported_bandwidths[] = { - MHZ_TO_KHZ(40), - MHZ_TO_KHZ(20), -}; - /* * Central wireless core regulatory domains, we only need two, * the current one and a world regulatory domain in case we have no @@ -388,6 +382,8 @@ static int call_crda(const char *alpha2) /* Used by nl80211 before kmalloc'ing our regulatory domain */ bool reg_is_valid_request(const char *alpha2) { + assert_cfg80211_lock(); + if (!last_request) return false; @@ -435,19 +431,20 @@ static bool is_valid_rd(const struct ieee80211_regdomain *rd) return true; } -/* Returns value in KHz */ -static u32 freq_max_bandwidth(const struct ieee80211_freq_range *freq_range, - u32 freq) +static bool reg_does_bw_fit(const struct ieee80211_freq_range *freq_range, + u32 center_freq_khz, + u32 bw_khz) { - unsigned int i; - for (i = 0; i < ARRAY_SIZE(supported_bandwidths); i++) { - u32 start_freq_khz = freq - supported_bandwidths[i]/2; - u32 end_freq_khz = freq + supported_bandwidths[i]/2; - if (start_freq_khz >= freq_range->start_freq_khz && - end_freq_khz <= freq_range->end_freq_khz) - return supported_bandwidths[i]; - } - return 0; + u32 start_freq_khz, end_freq_khz; + + start_freq_khz = center_freq_khz - (bw_khz/2); + end_freq_khz = center_freq_khz + (bw_khz/2); + + if (start_freq_khz >= freq_range->start_freq_khz && + end_freq_khz <= freq_range->end_freq_khz) + return true; + + return false; } /** @@ -847,14 +844,17 @@ static u32 map_regdom_flags(u32 rd_flags) static int freq_reg_info_regd(struct wiphy *wiphy, u32 center_freq, - u32 *bandwidth, + u32 desired_bw_khz, const struct ieee80211_reg_rule **reg_rule, const struct ieee80211_regdomain *custom_regd) { int i; bool band_rule_found = false; const struct ieee80211_regdomain *regd; - u32 max_bandwidth = 0; + bool bw_fits = false; + + if (!desired_bw_khz) + desired_bw_khz = MHZ_TO_KHZ(20); regd = custom_regd ? custom_regd : cfg80211_regdomain; @@ -887,38 +887,54 @@ static int freq_reg_info_regd(struct wiphy *wiphy, if (!band_rule_found) band_rule_found = freq_in_rule_band(fr, center_freq); - max_bandwidth = freq_max_bandwidth(fr, center_freq); + bw_fits = reg_does_bw_fit(fr, + center_freq, + desired_bw_khz); - if (max_bandwidth && *bandwidth <= max_bandwidth) { + if (band_rule_found && bw_fits) { *reg_rule = rr; - *bandwidth = max_bandwidth; - break; + return 0; } } if (!band_rule_found) return -ERANGE; - return !max_bandwidth; + return -EINVAL; } EXPORT_SYMBOL(freq_reg_info); -int freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 *bandwidth, - const struct ieee80211_reg_rule **reg_rule) +int freq_reg_info(struct wiphy *wiphy, + u32 center_freq, + u32 desired_bw_khz, + const struct ieee80211_reg_rule **reg_rule) { assert_cfg80211_lock(); - return freq_reg_info_regd(wiphy, center_freq, - bandwidth, reg_rule, NULL); + return freq_reg_info_regd(wiphy, + center_freq, + desired_bw_khz, + reg_rule, + NULL); } +/* + * Note that right now we assume the desired channel bandwidth + * is always 20 MHz for each individual channel (HT40 uses 20 MHz + * per channel, the primary and the extension channel). To support + * smaller custom bandwidths such as 5 MHz or 10 MHz we'll need a + * new ieee80211_channel.target_bw and re run the regulatory check + * on the wiphy with the target_bw specified. Then we can simply use + * that below for the desired_bw_khz below. + */ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, unsigned int chan_idx) { int r; - u32 flags; - u32 max_bandwidth = 0; + u32 flags, bw_flags = 0; + u32 desired_bw_khz = MHZ_TO_KHZ(20); const struct ieee80211_reg_rule *reg_rule = NULL; const struct ieee80211_power_rule *power_rule = NULL; + const struct ieee80211_freq_range *freq_range = NULL; struct ieee80211_supported_band *sband; struct ieee80211_channel *chan; struct wiphy *request_wiphy = NULL; @@ -933,8 +949,10 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, flags = chan->orig_flags; - r = freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq), - &max_bandwidth, ®_rule); + r = freq_reg_info(wiphy, + MHZ_TO_KHZ(chan->center_freq), + desired_bw_khz, + ®_rule); if (r) { /* @@ -977,6 +995,10 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, } power_rule = ®_rule->power_rule; + freq_range = ®_rule->freq_range; + + if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40)) + bw_flags = IEEE80211_CHAN_NO_HT40; if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER && request_wiphy && request_wiphy == wiphy && @@ -987,19 +1009,19 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band, * settings */ chan->flags = chan->orig_flags = - map_regdom_flags(reg_rule->flags); + map_regdom_flags(reg_rule->flags) | bw_flags; chan->max_antenna_gain = chan->orig_mag = (int) MBI_TO_DBI(power_rule->max_antenna_gain); - chan->max_bandwidth = KHZ_TO_MHZ(max_bandwidth); + chan->max_bandwidth = KHZ_TO_MHZ(desired_bw_khz); chan->max_power = chan->orig_mpwr = (int) MBM_TO_DBM(power_rule->max_eirp); return; } - chan->flags = flags | map_regdom_flags(reg_rule->flags); + chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags); chan->max_antenna_gain = min(chan->orig_mag, (int) MBI_TO_DBI(power_rule->max_antenna_gain)); - chan->max_bandwidth = KHZ_TO_MHZ(max_bandwidth); + chan->max_bandwidth = KHZ_TO_MHZ(desired_bw_khz); if (chan->orig_mpwr) chan->max_power = min(chan->orig_mpwr, (int) MBM_TO_DBM(power_rule->max_eirp)); @@ -1156,6 +1178,93 @@ static void reg_process_beacons(struct wiphy *wiphy) wiphy_update_beacon_reg(wiphy); } +static bool is_ht40_not_allowed(struct ieee80211_channel *chan) +{ + if (!chan) + return true; + if (chan->flags & IEEE80211_CHAN_DISABLED) + return true; + /* This would happen when regulatory rules disallow HT40 completely */ + if (IEEE80211_CHAN_NO_HT40 == (chan->flags & (IEEE80211_CHAN_NO_HT40))) + return true; + return false; +} + +static void reg_process_ht_flags_channel(struct wiphy *wiphy, + enum ieee80211_band band, + unsigned int chan_idx) +{ + struct ieee80211_supported_band *sband; + struct ieee80211_channel *channel; + struct ieee80211_channel *channel_before = NULL, *channel_after = NULL; + unsigned int i; + + assert_cfg80211_lock(); + + sband = wiphy->bands[band]; + BUG_ON(chan_idx >= sband->n_channels); + channel = &sband->channels[chan_idx]; + + if (is_ht40_not_allowed(channel)) { + channel->flags |= IEEE80211_CHAN_NO_HT40; + return; + } + + /* + * We need to ensure the extension channels exist to + * be able to use HT40- or HT40+, this finds them (or not) + */ + for (i = 0; i < sband->n_channels; i++) { + struct ieee80211_channel *c = &sband->channels[i]; + if (c->center_freq == (channel->center_freq - 20)) + channel_before = c; + if (c->center_freq == (channel->center_freq + 20)) + channel_after = c; + } + + /* + * Please note that this assumes target bandwidth is 20 MHz, + * if that ever changes we also need to change the below logic + * to include that as well. + */ + if (is_ht40_not_allowed(channel_before)) + channel->flags |= IEEE80211_CHAN_NO_HT40MINUS; + else + channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; + + if (is_ht40_not_allowed(channel_after)) + channel->flags |= IEEE80211_CHAN_NO_HT40PLUS; + else + channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; +} + +static void reg_process_ht_flags_band(struct wiphy *wiphy, + enum ieee80211_band band) +{ + unsigned int i; + struct ieee80211_supported_band *sband; + + BUG_ON(!wiphy->bands[band]); + sband = wiphy->bands[band]; + + for (i = 0; i < sband->n_channels; i++) + reg_process_ht_flags_channel(wiphy, band, i); +} + +static void reg_process_ht_flags(struct wiphy *wiphy) +{ + enum ieee80211_band band; + + if (!wiphy) + return; + + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (wiphy->bands[band]) + reg_process_ht_flags_band(wiphy, band); + } + +} + void wiphy_update_regulatory(struct wiphy *wiphy, enum nl80211_reg_initiator initiator) { @@ -1169,6 +1278,7 @@ void wiphy_update_regulatory(struct wiphy *wiphy, } out: reg_process_beacons(wiphy); + reg_process_ht_flags(wiphy); if (wiphy->reg_notifier) wiphy->reg_notifier(wiphy, last_request); } @@ -1179,9 +1289,11 @@ static void handle_channel_custom(struct wiphy *wiphy, const struct ieee80211_regdomain *regd) { int r; - u32 max_bandwidth = 0; + u32 desired_bw_khz = MHZ_TO_KHZ(20); + u32 bw_flags = 0; const struct ieee80211_reg_rule *reg_rule = NULL; const struct ieee80211_power_rule *power_rule = NULL; + const struct ieee80211_freq_range *freq_range = NULL; struct ieee80211_supported_band *sband; struct ieee80211_channel *chan; @@ -1191,8 +1303,11 @@ static void handle_channel_custom(struct wiphy *wiphy, BUG_ON(chan_idx >= sband->n_channels); chan = &sband->channels[chan_idx]; - r = freq_reg_info_regd(wiphy, MHZ_TO_KHZ(chan->center_freq), - &max_bandwidth, ®_rule, regd); + r = freq_reg_info_regd(wiphy, + MHZ_TO_KHZ(chan->center_freq), + desired_bw_khz, + ®_rule, + regd); if (r) { chan->flags = IEEE80211_CHAN_DISABLED; @@ -1200,10 +1315,14 @@ static void handle_channel_custom(struct wiphy *wiphy, } power_rule = ®_rule->power_rule; + freq_range = ®_rule->freq_range; + + if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40)) + bw_flags = IEEE80211_CHAN_NO_HT40; - chan->flags |= map_regdom_flags(reg_rule->flags); + chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags; chan->max_antenna_gain = (int) MBI_TO_DBI(power_rule->max_antenna_gain); - chan->max_bandwidth = KHZ_TO_MHZ(max_bandwidth); + chan->max_bandwidth = KHZ_TO_MHZ(desired_bw_khz); chan->max_power = (int) MBM_TO_DBM(power_rule->max_eirp); } @@ -1225,13 +1344,22 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy, const struct ieee80211_regdomain *regd) { enum ieee80211_band band; + unsigned int bands_set = 0; mutex_lock(&cfg80211_mutex); for (band = 0; band < IEEE80211_NUM_BANDS; band++) { - if (wiphy->bands[band]) - handle_band_custom(wiphy, band, regd); + if (!wiphy->bands[band]) + continue; + handle_band_custom(wiphy, band, regd); + bands_set++; } mutex_unlock(&cfg80211_mutex); + + /* + * no point in calling this if it won't have any effect + * on your device's supportd bands. + */ + WARN_ON(!bands_set); } EXPORT_SYMBOL(wiphy_apply_custom_regulatory); @@ -1552,6 +1680,13 @@ static int regulatory_hint_core(const char *alpha2) queue_regulatory_request(request); + /* + * This ensures last_request is populated once modules + * come swinging in and calling regulatory hints and + * wiphy_apply_custom_regulatory(). + */ + flush_scheduled_work(); + return 0; } diff --git a/net/wireless/util.c b/net/wireless/util.c index beb226e78cd7..d072bff463aa 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -4,7 +4,9 @@ * Copyright 2007-2009 Johannes Berg <johannes@sipsolutions.net> */ #include <linux/bitops.h> +#include <linux/etherdevice.h> #include <net/cfg80211.h> +#include <net/ip.h> #include "core.h" struct ieee80211_rate * @@ -181,5 +183,323 @@ int cfg80211_validate_key_settings(struct key_params *params, int key_idx, return -EINVAL; } + if (params->seq) { + switch (params->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + /* These ciphers do not use key sequence */ + return -EINVAL; + case WLAN_CIPHER_SUITE_TKIP: + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_AES_CMAC: + if (params->seq_len != 6) + return -EINVAL; + break; + } + } + + return 0; +} + +/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ +/* Ethernet-II snap header (RFC1042 for most EtherTypes) */ +const unsigned char rfc1042_header[] __aligned(2) = + { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; +EXPORT_SYMBOL(rfc1042_header); + +/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ +const unsigned char bridge_tunnel_header[] __aligned(2) = + { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; +EXPORT_SYMBOL(bridge_tunnel_header); + +unsigned int ieee80211_hdrlen(__le16 fc) +{ + unsigned int hdrlen = 24; + + if (ieee80211_is_data(fc)) { + if (ieee80211_has_a4(fc)) + hdrlen = 30; + if (ieee80211_is_data_qos(fc)) + hdrlen += IEEE80211_QOS_CTL_LEN; + goto out; + } + + if (ieee80211_is_ctl(fc)) { + /* + * ACK and CTS are 10 bytes, all others 16. To see how + * to get this condition consider + * subtype mask: 0b0000000011110000 (0x00F0) + * ACK subtype: 0b0000000011010000 (0x00D0) + * CTS subtype: 0b0000000011000000 (0x00C0) + * bits that matter: ^^^ (0x00E0) + * value of those: 0b0000000011000000 (0x00C0) + */ + if ((fc & cpu_to_le16(0x00E0)) == cpu_to_le16(0x00C0)) + hdrlen = 10; + else + hdrlen = 16; + } +out: + return hdrlen; +} +EXPORT_SYMBOL(ieee80211_hdrlen); + +unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb) +{ + const struct ieee80211_hdr *hdr = + (const struct ieee80211_hdr *)skb->data; + unsigned int hdrlen; + + if (unlikely(skb->len < 10)) + return 0; + hdrlen = ieee80211_hdrlen(hdr->frame_control); + if (unlikely(hdrlen > skb->len)) + return 0; + return hdrlen; +} +EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb); + +int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr) +{ + int ae = meshhdr->flags & MESH_FLAGS_AE; + /* 7.1.3.5a.2 */ + switch (ae) { + case 0: + return 6; + case 1: + return 12; + case 2: + return 18; + case 3: + return 24; + default: + return 6; + } +} + +int ieee80211_data_to_8023(struct sk_buff *skb, u8 *addr, + enum nl80211_iftype iftype) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + u16 hdrlen, ethertype; + u8 *payload; + u8 dst[ETH_ALEN]; + u8 src[ETH_ALEN] __aligned(2); + + if (unlikely(!ieee80211_is_data_present(hdr->frame_control))) + return -1; + + hdrlen = ieee80211_hdrlen(hdr->frame_control); + + /* convert IEEE 802.11 header + possible LLC headers into Ethernet + * header + * IEEE 802.11 address fields: + * ToDS FromDS Addr1 Addr2 Addr3 Addr4 + * 0 0 DA SA BSSID n/a + * 0 1 DA BSSID SA n/a + * 1 0 BSSID SA DA n/a + * 1 1 RA TA DA SA + */ + memcpy(dst, ieee80211_get_DA(hdr), ETH_ALEN); + memcpy(src, ieee80211_get_SA(hdr), ETH_ALEN); + + switch (hdr->frame_control & + cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) { + case cpu_to_le16(IEEE80211_FCTL_TODS): + if (unlikely(iftype != NL80211_IFTYPE_AP && + iftype != NL80211_IFTYPE_AP_VLAN)) + return -1; + break; + case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS): + if (unlikely(iftype != NL80211_IFTYPE_WDS && + iftype != NL80211_IFTYPE_MESH_POINT)) + return -1; + if (iftype == NL80211_IFTYPE_MESH_POINT) { + struct ieee80211s_hdr *meshdr = + (struct ieee80211s_hdr *) (skb->data + hdrlen); + hdrlen += ieee80211_get_mesh_hdrlen(meshdr); + if (meshdr->flags & MESH_FLAGS_AE_A5_A6) { + memcpy(dst, meshdr->eaddr1, ETH_ALEN); + memcpy(src, meshdr->eaddr2, ETH_ALEN); + } + } + break; + case cpu_to_le16(IEEE80211_FCTL_FROMDS): + if (iftype != NL80211_IFTYPE_STATION || + (is_multicast_ether_addr(dst) && + !compare_ether_addr(src, addr))) + return -1; + break; + case cpu_to_le16(0): + if (iftype != NL80211_IFTYPE_ADHOC) + return -1; + break; + } + + if (unlikely(skb->len - hdrlen < 8)) + return -1; + + payload = skb->data + hdrlen; + ethertype = (payload[6] << 8) | payload[7]; + + if (likely((compare_ether_addr(payload, rfc1042_header) == 0 && + ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || + compare_ether_addr(payload, bridge_tunnel_header) == 0)) { + /* remove RFC1042 or Bridge-Tunnel encapsulation and + * replace EtherType */ + skb_pull(skb, hdrlen + 6); + memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN); + memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN); + } else { + struct ethhdr *ehdr; + __be16 len; + + skb_pull(skb, hdrlen); + len = htons(skb->len); + ehdr = (struct ethhdr *) skb_push(skb, sizeof(struct ethhdr)); + memcpy(ehdr->h_dest, dst, ETH_ALEN); + memcpy(ehdr->h_source, src, ETH_ALEN); + ehdr->h_proto = len; + } + return 0; +} +EXPORT_SYMBOL(ieee80211_data_to_8023); + +int ieee80211_data_from_8023(struct sk_buff *skb, u8 *addr, + enum nl80211_iftype iftype, u8 *bssid, bool qos) +{ + struct ieee80211_hdr hdr; + u16 hdrlen, ethertype; + __le16 fc; + const u8 *encaps_data; + int encaps_len, skip_header_bytes; + int nh_pos, h_pos; + int head_need; + + if (unlikely(skb->len < ETH_HLEN)) + return -EINVAL; + + nh_pos = skb_network_header(skb) - skb->data; + h_pos = skb_transport_header(skb) - skb->data; + + /* convert Ethernet header to proper 802.11 header (based on + * operation mode) */ + ethertype = (skb->data[12] << 8) | skb->data[13]; + fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA); + + switch (iftype) { + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_AP_VLAN: + fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); + /* DA BSSID SA */ + memcpy(hdr.addr1, skb->data, ETH_ALEN); + memcpy(hdr.addr2, addr, ETH_ALEN); + memcpy(hdr.addr3, skb->data + ETH_ALEN, ETH_ALEN); + hdrlen = 24; + break; + case NL80211_IFTYPE_STATION: + fc |= cpu_to_le16(IEEE80211_FCTL_TODS); + /* BSSID SA DA */ + memcpy(hdr.addr1, bssid, ETH_ALEN); + memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN); + memcpy(hdr.addr3, skb->data, ETH_ALEN); + hdrlen = 24; + break; + case NL80211_IFTYPE_ADHOC: + /* DA SA BSSID */ + memcpy(hdr.addr1, skb->data, ETH_ALEN); + memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN); + memcpy(hdr.addr3, bssid, ETH_ALEN); + hdrlen = 24; + break; + default: + return -EOPNOTSUPP; + } + + if (qos) { + fc |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA); + hdrlen += 2; + } + + hdr.frame_control = fc; + hdr.duration_id = 0; + hdr.seq_ctrl = 0; + + skip_header_bytes = ETH_HLEN; + if (ethertype == ETH_P_AARP || ethertype == ETH_P_IPX) { + encaps_data = bridge_tunnel_header; + encaps_len = sizeof(bridge_tunnel_header); + skip_header_bytes -= 2; + } else if (ethertype > 0x600) { + encaps_data = rfc1042_header; + encaps_len = sizeof(rfc1042_header); + skip_header_bytes -= 2; + } else { + encaps_data = NULL; + encaps_len = 0; + } + + skb_pull(skb, skip_header_bytes); + nh_pos -= skip_header_bytes; + h_pos -= skip_header_bytes; + + head_need = hdrlen + encaps_len - skb_headroom(skb); + + if (head_need > 0 || skb_cloned(skb)) { + head_need = max(head_need, 0); + if (head_need) + skb_orphan(skb); + + if (pskb_expand_head(skb, head_need, 0, GFP_ATOMIC)) { + printk(KERN_ERR "failed to reallocate Tx buffer\n"); + return -ENOMEM; + } + skb->truesize += head_need; + } + + if (encaps_data) { + memcpy(skb_push(skb, encaps_len), encaps_data, encaps_len); + nh_pos += encaps_len; + h_pos += encaps_len; + } + + memcpy(skb_push(skb, hdrlen), &hdr, hdrlen); + + nh_pos += hdrlen; + h_pos += hdrlen; + + /* Update skb pointers to various headers since this modified frame + * is going to go through Linux networking code that may potentially + * need things like pointer to IP header. */ + skb_set_mac_header(skb, 0); + skb_set_network_header(skb, nh_pos); + skb_set_transport_header(skb, h_pos); + return 0; } +EXPORT_SYMBOL(ieee80211_data_from_8023); + +/* Given a data frame determine the 802.1p/1d tag to use. */ +unsigned int cfg80211_classify8021d(struct sk_buff *skb) +{ + unsigned int dscp; + + /* skb->priority values from 256->263 are magic values to + * directly indicate a specific 802.1d priority. This is used + * to allow 802.1d priority to be passed directly in from VLAN + * tags, etc. + */ + if (skb->priority >= 256 && skb->priority <= 263) + return skb->priority - 256; + + switch (skb->protocol) { + case htons(ETH_P_IP): + dscp = ip_hdr(skb)->tos & 0xfc; + break; + default: + return 0; + } + + return dscp >> 5; +} +EXPORT_SYMBOL(cfg80211_classify8021d); diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index f98090b90fbf..711e00a0c9b5 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -504,6 +504,13 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, else if (idx == wdev->wext.default_mgmt_key) wdev->wext.default_mgmt_key = -1; } + /* + * Applications using wireless extensions expect to be + * able to delete keys that don't exist, so allow that. + */ + if (err == -ENOENT) + return 0; + return err; } else { if (addr) diff --git a/net/wireless/wext.c b/net/wireless/wext.c index d3bbef70cc7c..252c2010c2e2 100644 --- a/net/wireless/wext.c +++ b/net/wireless/wext.c @@ -636,8 +636,10 @@ static void wireless_seq_printf_stats(struct seq_file *seq, /* * Print info for /proc/net/wireless (print all entries) */ -static int wireless_seq_show(struct seq_file *seq, void *v) +static int wireless_dev_seq_show(struct seq_file *seq, void *v) { + might_sleep(); + if (v == SEQ_START_TOKEN) seq_printf(seq, "Inter-| sta-| Quality | Discarded " "packets | Missed | WE\n" @@ -651,21 +653,41 @@ static int wireless_seq_show(struct seq_file *seq, void *v) static void *wireless_dev_seq_start(struct seq_file *seq, loff_t *pos) { + struct net *net = seq_file_net(seq); + loff_t off; + struct net_device *dev; + rtnl_lock(); - return dev_seq_start(seq, pos); + if (!*pos) + return SEQ_START_TOKEN; + + off = 1; + for_each_netdev(net, dev) + if (off++ == *pos) + return dev; + return NULL; +} + +static void *wireless_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos) +{ + struct net *net = seq_file_net(seq); + + ++*pos; + + return v == SEQ_START_TOKEN ? + first_net_device(net) : next_net_device(v); } static void wireless_dev_seq_stop(struct seq_file *seq, void *v) { - dev_seq_stop(seq, v); rtnl_unlock(); } static const struct seq_operations wireless_seq_ops = { .start = wireless_dev_seq_start, - .next = dev_seq_next, + .next = wireless_dev_seq_next, .stop = wireless_dev_seq_stop, - .show = wireless_seq_show, + .show = wireless_dev_seq_show, }; static int seq_open_wireless(struct inode *inode, struct file *file) @@ -798,6 +820,13 @@ static int ioctl_standard_iw_point(struct iw_point *iwp, unsigned int cmd, err = -EFAULT; goto out; } + + if (cmd == SIOCSIWENCODEEXT) { + struct iw_encode_ext *ee = (void *) extra; + + if (iwp->length < sizeof(*ee) + ee->key_len) + return -EFAULT; + } } err = handler(dev, info, (union iwreq_data *) iwp, extra); |