--- a/include/net/mac80211.h 2014-07-10 19:19:55.000000000 +0200 +++ b/include/net/mac80211.h 2014-07-10 20:52:02.000000000 +0200 @@ -4772,4 +4772,24 @@ int ieee80211_parse_p2p_noa(const struct */ void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf); +/** + * + */ +struct ieee80211_pcktunnel { + u16 subtype_mask[3]; /* 0: MGMT, 1: CTLR, 2: DATA */ + + int (*handler)(u32 ifindex, struct sk_buff *skb, int sig_dbm, unsigned char rate, void *data); + void *data; +}; + +/** + * + */ +int ieee80211_pcktunnel_register(struct net_device *dev, struct ieee80211_pcktunnel *handler); + +/** + * + */ +int ieee80211_pcktunnel_deregister(struct net_device *dev, struct ieee80211_pcktunnel *handler); + #endif /* MAC80211_H */ --- a/net/mac80211/ieee80211_i.h 2014-07-10 19:19:55.000000000 +0200 +++ b/net/mac80211/ieee80211_i.h 2014-07-10 20:47:56.000000000 +0200 @@ -165,6 +165,7 @@ typedef unsigned __bitwise__ ieee80211_r #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) #define RX_QUEUED ((__force ieee80211_rx_result) 3u) +#define RX_IGNORE_MONITOR ((__force ieee80211_rx_result) 4u) /** * enum ieee80211_packet_rx_flags - packet RX flags @@ -743,6 +744,9 @@ struct ieee80211_sub_if_data { char name[IFNAMSIZ]; + /* Packet tunnel handlers */ + struct ieee80211_pcktunnel __rcu *pcktunnel_handlers; + /* Fragment table for host-based reassembly */ struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; unsigned int fragment_next; --- a/net/mac80211/iface.c 2014-07-10 19:19:55.000000000 +0200 +++ b/net/mac80211/iface.c 2014-07-10 20:51:28.000000000 +0200 @@ -1844,3 +1844,45 @@ void ieee80211_iface_exit(void) { unregister_netdevice_notifier(&mac80211_netdev_notifier); } + +int ieee80211_pcktunnel_register(struct net_device *dev, struct ieee80211_pcktunnel *handler) +{ + int ret = 0; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + mutex_lock(&sdata->local->iflist_mtx); + + if (rcu_dereference_protected(sdata->pcktunnel_handlers, lockdep_is_held(&sdata->local->iflist_mtx))) { + ret = -EBUSY; + } else { + rcu_assign_pointer(sdata->pcktunnel_handlers, handler); + } + + mutex_unlock(&sdata->local->iflist_mtx); + synchronize_net(); + + return ret; +} +EXPORT_SYMBOL(ieee80211_pcktunnel_register); + +int ieee80211_pcktunnel_deregister(struct net_device *dev, struct ieee80211_pcktunnel *handler) +{ + int ret = -ENODEV; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_pcktunnel *h; + + mutex_lock(&sdata->local->iflist_mtx); + + h = rcu_dereference_protected(sdata->pcktunnel_handlers, lockdep_is_held(&sdata->local->iflist_mtx)); + if (h == handler) { + ret = 0; + rcu_assign_pointer(sdata->pcktunnel_handlers, NULL); + } + + mutex_unlock(&sdata->local->iflist_mtx); + synchronize_net(); + + return ret; +} +EXPORT_SYMBOL(ieee80211_pcktunnel_deregister); + --- a/net/mac80211/rx.c 2014-07-10 19:19:55.000000000 +0200 +++ b/net/mac80211/rx.c 2014-07-10 21:01:19.000000000 +0200 @@ -2831,6 +2831,51 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_ return RX_QUEUED; } +static ieee80211_rx_result debug_noinline +ieee80211_rx_h_pcktunnel(struct ieee80211_rx_data *rx, struct ieee80211_rate *rate) +{ + struct ieee80211_pcktunnel *handler; + + handler = rcu_dereference(rx->sdata->pcktunnel_handlers); + if (handler) { + u16 fc; + u16 fc_type; + int sig_dbm = 0; + unsigned char pckrate = 0; + struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb); + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data; + + if (rx->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) + sig_dbm = status->signal; + + if (rate && !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT))) { + int shift = 0; + if (status->flag & RX_FLAG_10MHZ) + shift = 1; + else if (status->flag & RX_FLAG_5MHZ) + shift = 2; + pckrate = DIV_ROUND_UP(rate->bitrate, 5 * (1 << shift)); + } + + /* Retrieve type and subtype packet */ + fc = le16_to_cpu(hdr->frame_control); + fc_type = ((fc & IEEE80211_FCTL_FTYPE) >> 2); + if (fc_type < 3) { + u16 bitmask = 1 << ((fc & IEEE80211_FCTL_STYPE) >> 4); + + /* Delegate packet to external handler */ + if (handler->subtype_mask[fc_type] & bitmask) { + if (handler->handler(rx->sdata->dev->ifindex, rx->skb, sig_dbm, pckrate, handler->data)) { + return RX_IGNORE_MONITOR; + } + } + } + } + + return RX_CONTINUE; +} + + /* TODO: use IEEE80211_RX_FRAGMENTED */ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx, struct ieee80211_rate *rate) @@ -2910,6 +2955,7 @@ static void ieee80211_rx_handlers_result if (rx->sta) rx->sta->rx_dropped++; /* fall through */ + case RX_IGNORE_MONITOR: case RX_CONTINUE: { struct ieee80211_rate *rate = NULL; struct ieee80211_supported_band *sband; @@ -2938,7 +2984,9 @@ static void ieee80211_rx_handlers_result } static void ieee80211_rx_handlers(struct ieee80211_rx_data *rx, - struct sk_buff_head *frames) + struct sk_buff_head *frames, + struct ieee80211_rate *rate) + { ieee80211_rx_result res = RX_DROP_MONITOR; struct sk_buff *skb; @@ -2971,6 +3019,11 @@ static void ieee80211_rx_handlers(struct if (ieee80211_vif_is_mesh(&rx->sdata->vif)) CALL_RXH(ieee80211_rx_h_mesh_fwding); #endif + /* special treatment */ + res = ieee80211_rx_h_pcktunnel(rx, rate); + if (res != RX_CONTINUE) + goto rxh_next; + CALL_RXH(ieee80211_rx_h_amsdu) CALL_RXH(ieee80211_rx_h_data) @@ -2994,7 +3047,8 @@ static void ieee80211_rx_handlers(struct spin_unlock_bh(&rx->local->rx_path_lock); } -static void ieee80211_invoke_rx_handlers(struct ieee80211_rx_data *rx) +static void ieee80211_invoke_rx_handlers(struct ieee80211_rx_data *rx, + struct ieee80211_rate *rate) { struct sk_buff_head reorder_release; ieee80211_rx_result res = RX_DROP_MONITOR; @@ -3012,7 +3066,7 @@ static void ieee80211_invoke_rx_handlers ieee80211_rx_reorder_ampdu(rx, &reorder_release); - ieee80211_rx_handlers(rx, &reorder_release); + ieee80211_rx_handlers(rx, &reorder_release, rate); return; rxh_next: @@ -3049,7 +3103,7 @@ void ieee80211_release_reorder_timeout(s ieee80211_sta_reorder_release(sta->sdata, tid_agg_rx, &frames); spin_unlock(&tid_agg_rx->reorder_lock); - ieee80211_rx_handlers(&rx, &frames); + ieee80211_rx_handlers(&rx, &frames, NULL); } /* main receive path */ @@ -3163,7 +3217,9 @@ static bool prepare_for_handlers(struct * or not the skb was consumed. */ static bool ieee80211_prepare_and_rx_handle(struct ieee80211_rx_data *rx, - struct sk_buff *skb, bool consume) + struct sk_buff *skb, + struct ieee80211_rate *rate, + bool consume) { struct ieee80211_local *local = rx->local; struct ieee80211_sub_if_data *sdata = rx->sdata; @@ -3189,7 +3245,7 @@ static bool ieee80211_prepare_and_rx_han rx->skb = skb; } - ieee80211_invoke_rx_handlers(rx); + ieee80211_invoke_rx_handlers(rx, rate); return true; } @@ -3198,7 +3254,8 @@ static bool ieee80211_prepare_and_rx_han * be called with rcu_read_lock protection. */ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, - struct sk_buff *skb) + struct sk_buff *skb, + struct ieee80211_rate *rate) { struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_sub_if_data *sdata; @@ -3251,7 +3308,7 @@ static void __ieee80211_rx_handle_packet rx.sta = prev_sta; rx.sdata = prev_sta->sdata; - ieee80211_prepare_and_rx_handle(&rx, skb, false); + ieee80211_prepare_and_rx_handle(&rx, skb, rate, false); prev_sta = sta; } @@ -3260,7 +3317,7 @@ static void __ieee80211_rx_handle_packet rx.sta = prev_sta; rx.sdata = prev_sta->sdata; - if (ieee80211_prepare_and_rx_handle(&rx, skb, true)) + if (ieee80211_prepare_and_rx_handle(&rx, skb, rate, true)) return; goto out; } @@ -3289,7 +3346,7 @@ static void __ieee80211_rx_handle_packet rx.sta = sta_info_get_bss(prev, hdr->addr2); rx.sdata = prev; - ieee80211_prepare_and_rx_handle(&rx, skb, false); + ieee80211_prepare_and_rx_handle(&rx, skb, rate, false); prev = sdata; } @@ -3298,7 +3355,7 @@ static void __ieee80211_rx_handle_packet rx.sta = sta_info_get_bss(prev, hdr->addr2); rx.sdata = prev; - if (ieee80211_prepare_and_rx_handle(&rx, skb, true)) + if (ieee80211_prepare_and_rx_handle(&rx, skb, rate, true)) return; } @@ -3409,7 +3466,7 @@ void ieee80211_rx(struct ieee80211_hw *h ieee80211_tpt_led_trig_rx(local, ((struct ieee80211_hdr *)skb->data)->frame_control, skb->len); - __ieee80211_rx_handle_packet(hw, skb); + __ieee80211_rx_handle_packet(hw, skb, rate); rcu_read_unlock();