aboutsummaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/Kconfig12
-rw-r--r--net/mac80211/ieee80211.c14
-rw-r--r--net/mac80211/rc80211_pid_algo.c2
-rw-r--r--net/mac80211/rc80211_simple.c2
-rw-r--r--net/mac80211/rx.c7
5 files changed, 28 insertions, 9 deletions
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 09c255002e5..e77592d050c 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -98,6 +98,18 @@ config MAC80211_DEBUGFS
Say N unless you know you need this.
+config MAC80211_DEBUG_PACKET_ALIGNMENT
+ bool "Enable packet alignment debugging"
+ depends on MAC80211
+ help
+ This option is recommended for driver authors and strongly
+ discouraged for everybody else, it will trigger a warning
+ when a driver hands mac80211 a buffer that is aligned in
+ a way that will cause problems with the IP stack on some
+ architectures.
+
+ Say N unless you're writing a mac80211 based driver.
+
config MAC80211_DEBUG
bool "Enable debugging output"
depends on MAC80211
diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c
index 5dcc2d61551..67b7c75c430 100644
--- a/net/mac80211/ieee80211.c
+++ b/net/mac80211/ieee80211.c
@@ -1344,17 +1344,17 @@ static int __init ieee80211_init(void)
ret = rc80211_simple_init();
if (ret)
- goto fail;
+ goto out;
ret = rc80211_pid_init();
if (ret)
- goto fail_simple;
+ goto out_cleanup_simple;
ret = ieee80211_wme_register();
if (ret) {
printk(KERN_DEBUG "ieee80211_init: failed to "
"initialize WME (err=%d)\n", ret);
- goto fail_pid;
+ goto out_cleanup_pid;
}
ieee80211_debugfs_netdev_init();
@@ -1362,11 +1362,11 @@ static int __init ieee80211_init(void)
return 0;
- fail_pid:
- rc80211_simple_exit();
- fail_simple:
+ out_cleanup_pid:
rc80211_pid_exit();
- fail:
+ out_cleanup_simple:
+ rc80211_simple_exit();
+ out:
return ret;
}
diff --git a/net/mac80211/rc80211_pid_algo.c b/net/mac80211/rc80211_pid_algo.c
index 554c4baed6f..c339571632b 100644
--- a/net/mac80211/rc80211_pid_algo.c
+++ b/net/mac80211/rc80211_pid_algo.c
@@ -538,7 +538,7 @@ int __init rc80211_pid_init(void)
return ieee80211_rate_control_register(&mac80211_rcpid);
}
-void __exit rc80211_pid_exit(void)
+void rc80211_pid_exit(void)
{
ieee80211_rate_control_unregister(&mac80211_rcpid);
}
diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c
index 934676d687d..9a78b116acf 100644
--- a/net/mac80211/rc80211_simple.c
+++ b/net/mac80211/rc80211_simple.c
@@ -389,7 +389,7 @@ int __init rc80211_simple_init(void)
return ieee80211_rate_control_register(&mac80211_rcsimple);
}
-void __exit rc80211_simple_exit(void)
+void rc80211_simple_exit(void)
{
ieee80211_rate_control_unregister(&mac80211_rcsimple);
}
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index d44c87269bc..535407d07fa 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -340,11 +340,15 @@ static u32 ieee80211_rx_load_stats(struct ieee80211_local *local,
return load;
}
+#ifdef CONFIG_MAC80211_DEBUG_PACKET_ALIGNMENT
static ieee80211_txrx_result
ieee80211_rx_h_verify_ip_alignment(struct ieee80211_txrx_data *rx)
{
int hdrlen;
+ if (!WLAN_FC_DATA_PRESENT(rx->fc))
+ return TXRX_CONTINUE;
+
/*
* Drivers are required to align the payload data in a way that
* guarantees that the contained IP header is aligned to a four-
@@ -371,11 +375,14 @@ ieee80211_rx_h_verify_ip_alignment(struct ieee80211_txrx_data *rx)
return TXRX_CONTINUE;
}
+#endif
ieee80211_rx_handler ieee80211_rx_pre_handlers[] =
{
ieee80211_rx_h_parse_qos,
+#ifdef CONFIG_MAC80211_DEBUG_PACKET_ALIGNMENT
ieee80211_rx_h_verify_ip_alignment,
+#endif
NULL
};