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fix hw queue selection for 802.11 raw frame injection

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Update mac80211 support patch:
 * remove obsolte monitor sdata handling (we don't use
   a monitor interface, so accessing that data is a bug)
 * initialize the skb queue mapping to match the tid,
   at least ath9k does not like it when the tid and
   queue mapping disagree
This commit is contained in:
Andreas Schultz 2016-08-11 12:22:11 +02:00
parent 9fbf441896
commit 57bcb0e183
1 changed files with 18 additions and 47 deletions
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65
openwrt/mac80211_patchs/922-mac80211_packet_tunnel.patch
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@ -1,4 +1,4 @@
From c26411bf0d00a6ceed42e85d66812b591b7c4c83 Mon Sep 17 00:00:00 2001
From 14e0315c4d59ccc59c86543323a2d5a36b7b7f14 Mon Sep 17 00:00:00 2001
From: Andreas Schultz <aschultz@tpip.net>
Date: Thu, 4 Feb 2016 15:57:11 +0100
Subject: [PATCH] support patch for smartcapwap
@ -7,10 +7,10 @@ Allows for kernel side interception and injection of IEEE 802.11 frames.
---
include/net/mac80211.h | 25 ++++
net/mac80211/ieee80211_i.h | 6 +
net/mac80211/iface.c | 56 ++++++++
net/mac80211/rx.c | 81 ++++++++++--
net/mac80211/tx.c | 312 +++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 468 insertions(+), 12 deletions(-)
net/mac80211/iface.c | 56 +++++++++
net/mac80211/rx.c | 81 +++++++++++--
net/mac80211/tx.c | 283 +++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 439 insertions(+), 12 deletions(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 760bc4d..6722da6 100644
@ -334,10 +334,10 @@ index 82af407..29cc59b 100644
rcu_read_unlock();
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index bdc224d..fd48ccf 100644
index bdc224d..af69af6 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2939,6 +2939,144 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
@@ -2939,6 +2939,115 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
return NETDEV_TX_OK;
}
@ -353,8 +353,9 @@ index bdc224d..fd48ccf 100644
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_sub_if_data *tmp_sdata, *sdata;
+ struct ieee80211_sub_if_data *sdata;
+ struct cfg80211_chan_def *chandef;
+ int tid;
+ int hdrlen;
+
+ /* check for not even having the fixed 802.11 header */
@ -367,13 +368,13 @@ index bdc224d..fd48ccf 100644
+ if (unlikely(skb->len < hdrlen))
+ goto fail; /* skb too short for claimed header length */
+
+ skb_reset_mac_header(skb);
+ skb_set_mac_header(skb, 0);
+ /*
+ * these are just fixed to the end of the rt area since we
+ * don't have any better information and at this point, nobody cares
+ */
+ skb_reset_network_header(skb);
+ skb_reset_transport_header(skb);
+ skb_set_network_header(skb, hdrlen);
+ skb_set_transport_header(skb, hdrlen);
+
+ /*
+ * Initialize skb->protocol if the injected frame is a data frame
@ -393,13 +394,12 @@ index bdc224d..fd48ccf 100644
+
+ skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK;
+ }
+ skb_set_queue_mapping(skb, ieee802_1d_to_ac[skb->priority]);
+
+ memset(info, 0, sizeof(*info));
+
+ info->flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+ IEEE80211_TX_CTL_INJECTED;
+
+
+ /*
+ * we might have set these flags later.....
+ * info->flags &= ~IEEE80211_TX_INTFL_DONT_ENCRYPT;
@ -411,46 +411,17 @@ index bdc224d..fd48ccf 100644
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (!chanctx_conf) {
+ tmp_sdata = rcu_dereference(local->monitor_sdata);
+ if (tmp_sdata)
+ chanctx_conf =
+ rcu_dereference(tmp_sdata->vif.chanctx_conf);
+ }
+
+ if (chanctx_conf)
+ chandef = &chanctx_conf->def;
+ else if (!local->use_chanctx)
+ chandef = &local->_oper_chandef;
+ else
+ if (!chanctx_conf)
+ goto fail_rcu;
+
+ /*
+ * Frame injection is not allowed if beaconing is not allowed
+ * or if we need radar detection. Beaconing is usually not allowed when
+ * the mode or operation (Adhoc, AP, Mesh) does not support DFS.
+ * Passive scan is also used in world regulatory domains where
+ * your country is not known and as such it should be treated as
+ * NO TX unless the channel is explicitly allowed in which case
+ * your current regulatory domain would not have the passive scan
+ * flag.
+ *
+ * Since AP mode uses monitor interfaces to inject/TX management
+ * frames we can make AP mode the exception to this rule once it
+ * supports radar detection as its implementation can deal with
+ * radar detection by itself. We can do that later by adding a
+ * monitor flag interfaces used for AP support.
+ */
+ if (!cfg80211_reg_can_beacon(local->hw.wiphy, chandef,
+ sdata->vif.type))
+ goto fail_rcu;
+ info->band = chanctx_conf->def.chan->band;
+
+ ieee80211_tx_stats(dev, skb->len);
+
+ info->band = chandef->chan->band;
+ ieee80211_xmit(sdata, NULL, skb);
+ rcu_read_unlock();
+
+ return;
+
+fail_rcu:
+ rcu_read_unlock();
+fail:
@ -482,7 +453,7 @@ index bdc224d..fd48ccf 100644
struct sk_buff *
ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, u32 info_flags)
@@ -3914,3 +4052,177 @@ void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
@@ -3914,3 +4023,177 @@ void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
ieee80211_xmit(sdata, NULL, skb);
local_bh_enable();
}