]> git.karo-electronics.de Git - karo-tx-linux.git/blobdiff - net/mac80211/iface.c
mac80211: fix skb buffering issue
[karo-tx-linux.git] / net / mac80211 / iface.c
index 80c16f6e2af67e2798da4c417d69ce94dae86b71..c261cdb359ebbff176245430761512dc743b084c 100644 (file)
 #include <linux/netdevice.h>
 #include <linux/rtnetlink.h>
 #include <net/mac80211.h>
+#include <net/ieee80211_radiotap.h>
 #include "ieee80211_i.h"
 #include "sta_info.h"
 #include "debugfs_netdev.h"
 #include "mesh.h"
 #include "led.h"
 #include "driver-ops.h"
+#include "wme.h"
 
 /**
  * DOC: Interface list locking
@@ -644,6 +646,12 @@ static void ieee80211_teardown_sdata(struct net_device *dev)
        WARN_ON(flushed);
 }
 
+static u16 ieee80211_netdev_select_queue(struct net_device *dev,
+                                        struct sk_buff *skb)
+{
+       return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb);
+}
+
 static const struct net_device_ops ieee80211_dataif_ops = {
        .ndo_open               = ieee80211_open,
        .ndo_stop               = ieee80211_stop,
@@ -652,8 +660,34 @@ static const struct net_device_ops ieee80211_dataif_ops = {
        .ndo_set_multicast_list = ieee80211_set_multicast_list,
        .ndo_change_mtu         = ieee80211_change_mtu,
        .ndo_set_mac_address    = eth_mac_addr,
+       .ndo_select_queue       = ieee80211_netdev_select_queue,
 };
 
+static u16 ieee80211_monitor_select_queue(struct net_device *dev,
+                                         struct sk_buff *skb)
+{
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       struct ieee80211_local *local = sdata->local;
+       struct ieee80211_hdr *hdr;
+       struct ieee80211_radiotap_header *rtap = (void *)skb->data;
+
+       if (local->hw.queues < 4)
+               return 0;
+
+       if (skb->len < 4 ||
+           skb->len < rtap->it_len + 2 /* frame control */)
+               return 0; /* doesn't matter, frame will be dropped */
+
+       hdr = (void *)((u8 *)skb->data + rtap->it_len);
+
+       if (!ieee80211_is_data(hdr->frame_control)) {
+               skb->priority = 7;
+               return ieee802_1d_to_ac[skb->priority];
+       }
+
+       return ieee80211_downgrade_queue(local, skb);
+}
+
 static const struct net_device_ops ieee80211_monitorif_ops = {
        .ndo_open               = ieee80211_open,
        .ndo_stop               = ieee80211_stop,
@@ -662,6 +696,7 @@ static const struct net_device_ops ieee80211_monitorif_ops = {
        .ndo_set_multicast_list = ieee80211_set_multicast_list,
        .ndo_change_mtu         = ieee80211_change_mtu,
        .ndo_set_mac_address    = eth_mac_addr,
+       .ndo_select_queue       = ieee80211_monitor_select_queue,
 };
 
 static void ieee80211_if_setup(struct net_device *dev)
@@ -768,8 +803,8 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 
        ASSERT_RTNL();
 
-       ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size,
-                           name, ieee80211_if_setup);
+       ndev = alloc_netdev_mq(sizeof(*sdata) + local->hw.vif_data_size,
+                              name, ieee80211_if_setup, local->hw.queues);
        if (!ndev)
                return -ENOMEM;
        dev_net_set(ndev, wiphy_net(local->hw.wiphy));