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authorFelix Fietkau <nbd@nbd.name>2016-05-14 17:38:56 +0200
committerFelix Fietkau <nbd@nbd.name>2016-05-15 20:55:39 +0200
commitdf93d53a4b7a5ce284dc0c6509057979f233cb92 (patch)
treed99034d6d05295b9e27648dcbcf743b51c8a0c5b /package/kernel/mac80211/patches/321-mac80211-Parse-legacy-and-HT-rate-in-injected-frames.patch
parentace946152dd0806b25bcb3812b33ab5df95966b7 (diff)
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mac80211: update to wireless-testing 2016-05-12
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'package/kernel/mac80211/patches/321-mac80211-Parse-legacy-and-HT-rate-in-injected-frames.patch')
-rw-r--r--package/kernel/mac80211/patches/321-mac80211-Parse-legacy-and-HT-rate-in-injected-frames.patch155
1 files changed, 0 insertions, 155 deletions
diff --git a/package/kernel/mac80211/patches/321-mac80211-Parse-legacy-and-HT-rate-in-injected-frames.patch b/package/kernel/mac80211/patches/321-mac80211-Parse-legacy-and-HT-rate-in-injected-frames.patch
deleted file mode 100644
index c4155a1181..0000000000
--- a/package/kernel/mac80211/patches/321-mac80211-Parse-legacy-and-HT-rate-in-injected-frames.patch
+++ /dev/null
@@ -1,155 +0,0 @@
-From: Sven Eckelmann <sven@narfation.org>
-Date: Tue, 26 Jan 2016 17:11:13 +0100
-Subject: [PATCH] mac80211: Parse legacy and HT rate in injected frames
-
-Drivers/devices without their own rate control algorithm can get the
-information what rates they should use from either the radiotap header of
-injected frames or from the rate control algorithm. But the parsing of the
-legacy rate information from the radiotap header was removed in commit
-e6a9854b05c1 ("mac80211/drivers: rewrite the rate control API").
-
-The removal of this feature heavily reduced the usefulness of frame
-injection when wanting to simulate specific transmission behavior. Having
-rate parsing together with MCS rates and retry support allows a fine
-grained selection of the tx behavior of injected frames for these kind of
-tests.
-
-Signed-off-by: Sven Eckelmann <sven@narfation.org>
-Cc: Simon Wunderlich <sw@simonwunderlich.de>
-Signed-off-by: Johannes Berg <johannes.berg@intel.com>
----
-
---- a/include/net/mac80211.h
-+++ b/include/net/mac80211.h
-@@ -708,12 +708,14 @@ enum mac80211_tx_info_flags {
- * protocol frame (e.g. EAP)
- * @IEEE80211_TX_CTRL_PS_RESPONSE: This frame is a response to a poll
- * frame (PS-Poll or uAPSD).
-+ * @IEEE80211_TX_CTRL_RATE_INJECT: This frame is injected with rate information
- *
- * These flags are used in tx_info->control.flags.
- */
- enum mac80211_tx_control_flags {
- IEEE80211_TX_CTRL_PORT_CTRL_PROTO = BIT(0),
- IEEE80211_TX_CTRL_PS_RESPONSE = BIT(1),
-+ IEEE80211_TX_CTRL_RATE_INJECT = BIT(2),
- };
-
- /*
---- a/net/mac80211/tx.c
-+++ b/net/mac80211/tx.c
-@@ -710,6 +710,10 @@ ieee80211_tx_h_rate_ctrl(struct ieee8021
-
- info->control.short_preamble = txrc.short_preamble;
-
-+ /* don't ask rate control when rate already injected via radiotap */
-+ if (info->control.flags & IEEE80211_TX_CTRL_RATE_INJECT)
-+ return TX_CONTINUE;
-+
- if (tx->sta)
- assoc = test_sta_flag(tx->sta, WLAN_STA_ASSOC);
-
-@@ -1665,15 +1669,24 @@ void ieee80211_xmit(struct ieee80211_sub
- ieee80211_tx(sdata, sta, skb, false);
- }
-
--static bool ieee80211_parse_tx_radiotap(struct sk_buff *skb)
-+static bool ieee80211_parse_tx_radiotap(struct ieee80211_local *local,
-+ struct sk_buff *skb)
- {
- struct ieee80211_radiotap_iterator iterator;
- struct ieee80211_radiotap_header *rthdr =
- (struct ieee80211_radiotap_header *) skb->data;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-+ struct ieee80211_supported_band *sband =
-+ local->hw.wiphy->bands[info->band];
- int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len,
- NULL);
- u16 txflags;
-+ u16 rate = 0;
-+ bool rate_found = false;
-+ u8 rate_retries = 0;
-+ u16 rate_flags = 0;
-+ u8 mcs_known, mcs_flags;
-+ int i;
-
- info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
- IEEE80211_TX_CTL_DONTFRAG;
-@@ -1724,6 +1737,35 @@ static bool ieee80211_parse_tx_radiotap(
- info->flags |= IEEE80211_TX_CTL_NO_ACK;
- break;
-
-+ case IEEE80211_RADIOTAP_RATE:
-+ rate = *iterator.this_arg;
-+ rate_flags = 0;
-+ rate_found = true;
-+ break;
-+
-+ case IEEE80211_RADIOTAP_DATA_RETRIES:
-+ rate_retries = *iterator.this_arg;
-+ break;
-+
-+ case IEEE80211_RADIOTAP_MCS:
-+ mcs_known = iterator.this_arg[0];
-+ mcs_flags = iterator.this_arg[1];
-+ if (!(mcs_known & IEEE80211_RADIOTAP_MCS_HAVE_MCS))
-+ break;
-+
-+ rate_found = true;
-+ rate = iterator.this_arg[2];
-+ rate_flags = IEEE80211_TX_RC_MCS;
-+
-+ if (mcs_known & IEEE80211_RADIOTAP_MCS_HAVE_GI &&
-+ mcs_flags & IEEE80211_RADIOTAP_MCS_SGI)
-+ rate_flags |= IEEE80211_TX_RC_SHORT_GI;
-+
-+ if (mcs_known & IEEE80211_RADIOTAP_MCS_HAVE_BW &&
-+ mcs_flags & IEEE80211_RADIOTAP_MCS_BW_40)
-+ rate_flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
-+ break;
-+
- /*
- * Please update the file
- * Documentation/networking/mac80211-injection.txt
-@@ -1738,6 +1780,32 @@ static bool ieee80211_parse_tx_radiotap(
- if (ret != -ENOENT) /* ie, if we didn't simply run out of fields */
- return false;
-
-+ if (rate_found) {
-+ info->control.flags |= IEEE80211_TX_CTRL_RATE_INJECT;
-+
-+ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
-+ info->control.rates[i].idx = -1;
-+ info->control.rates[i].flags = 0;
-+ info->control.rates[i].count = 0;
-+ }
-+
-+ if (rate_flags & IEEE80211_TX_RC_MCS) {
-+ info->control.rates[0].idx = rate;
-+ } else {
-+ for (i = 0; i < sband->n_bitrates; i++) {
-+ if (rate * 5 != sband->bitrates[i].bitrate)
-+ continue;
-+
-+ info->control.rates[0].idx = i;
-+ break;
-+ }
-+ }
-+
-+ info->control.rates[0].flags = rate_flags;
-+ info->control.rates[0].count = min_t(u8, rate_retries + 1,
-+ local->hw.max_rate_tries);
-+ }
-+
- /*
- * remove the radiotap header
- * iterator->_max_length was sanity-checked against
-@@ -1819,7 +1887,7 @@ netdev_tx_t ieee80211_monitor_start_xmit
- IEEE80211_TX_CTL_INJECTED;
-
- /* process and remove the injection radiotap header */
-- if (!ieee80211_parse_tx_radiotap(skb))
-+ if (!ieee80211_parse_tx_radiotap(local, skb))
- goto fail;
-
- rcu_read_lock();