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authorGabor Juhos <juhosg@openwrt.org>2012-12-11 14:16:23 +0000
committerGabor Juhos <juhosg@openwrt.org>2012-12-11 14:16:23 +0000
commit1a000cfcef8513c659e6f9d49527c7ee3cd81d5a (patch)
tree9fa878ed71db7dae25cdb0b5da0d2a9a3d2387ad /package/mac80211/patches/306-pending-rt2x00-zero-out-rx_status.patch
parented15c452a1ce5a92e6e7b27f34a038ac7249c7b6 (diff)
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mac80211: zero-out rx_status in rt2x00, ath5k, p54
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 34627
Diffstat (limited to 'package/mac80211/patches/306-pending-rt2x00-zero-out-rx_status.patch')
-rw-r--r--package/mac80211/patches/306-pending-rt2x00-zero-out-rx_status.patch54
1 files changed, 54 insertions, 0 deletions
diff --git a/package/mac80211/patches/306-pending-rt2x00-zero-out-rx_status.patch b/package/mac80211/patches/306-pending-rt2x00-zero-out-rx_status.patch
new file mode 100644
index 0000000000..1580337adc
--- /dev/null
+++ b/package/mac80211/patches/306-pending-rt2x00-zero-out-rx_status.patch
@@ -0,0 +1,54 @@
+From 84b435b38a84c9a7e8ba33e8d02d2f967f847ce1 Mon Sep 17 00:00:00 2001
+From: Gabor Juhos <juhosg@openwrt.org>
+Date: Tue, 11 Dec 2012 14:15:53 +0100
+Subject: [PATCH 1/3] rt2x00: zero-out rx_status
+
+In commit 'mac80211: support radiotap vendor namespace RX data'
+new fields were added to 'struct ieee80211_rx_status'.
+The rt2x00 driver does not initializes those fields and
+this can cause unexpected behaviour.
+
+The rt2x00 driver from the compat-wireless-2012-12-01
+tarball caused the following warning:
+
+ WARNING: at
+ /devel/ramips/build_dir/target-mipsel_r2_uClibc-0.9.33.2/linux-ramips_rt305x/
+ compat-wireless-2012-12-01/net/mac80211/rx.c:115 ieee80211_rx_irqsafe+0x274/0xbcc
+ [mac80211]()
+ Modules linked in: dwc_otg ledtrig_usbdev nf_nat_irc
+ nf_nat_ftp nf_conntrack_irc nf_conntrack_ftp ipt_MASQUERADE
+ iptable_nat nf_nat pppoe xt_conntrack xt_CT xt_NOTRACK iptable_raw
+ xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack pppox
+ ipt_REJECT xt_TCPMSS xt_comment xt_multiport xt_mac xt_limit
+ iptable_mangle iptable_filter ip_tables xt_tcpudp x_tables ppp_async
+ ppp_generic slhc rt2800pci(O) rt2800lib(O) rt2x00soc(O) rt2x00pci(O)
+ rt2x00lib(O) mac80211(O) usbcore usb_common nls_base crc_itu_t
+ crc_ccitt eeprom_93cx6 cfg80211(O) compat(O) arc4 aes_generic
+ crypto_blkcipher cryptomgr aead crypto_hash crypto_algapi leds_gpio
+ button_hotplug(O) gpio_keys_polled input_polldev input_core
+ Call Trace:
+ [<801e96b4>] dump_stack+0x8/0x34
+ [<80010a9c>] warn_slowpath_common+0x78/0xa4
+ [<80010ae0>] warn_slowpath_null+0x18/0x24
+ [<80a9710c>] ieee80211_rx_irqsafe+0x274/0xbcc [mac80211]
+
+The patch ensures that each field gets initialized with
+zeroes.
+
+Cc: <users@rt2x00.serialmonkey.com>
+Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
+---
+ drivers/net/wireless/rt2x00/rt2x00dev.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
++++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
+@@ -685,6 +685,8 @@ void rt2x00lib_rxdone(struct queue_entry
+ * to mac80211.
+ */
+ rx_status = IEEE80211_SKB_RXCB(entry->skb);
++ memset(rx_status, 0, sizeof(*rx_status));
++
+ rx_status->mactime = rxdesc.timestamp;
+ rx_status->band = rt2x00dev->curr_band;
+ rx_status->freq = rt2x00dev->curr_freq;