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authorJuuso Oikarinen <juuso.oikarinen@nokia.com>2010-05-27 15:32:13 +0300
committerJohn W. Linville <linville@tuxdriver.com>2010-06-03 14:10:45 -0400
commit2b2c009ecf71f4c66ff8420b63dddbc9737e04e3 (patch)
tree62f93194843ecf92d871d34963450c03d165af08 /include
parent095dfdb0c479661f437b24b85e31f0d0b841eab6 (diff)
downloadop-kernel-dev-2b2c009ecf71f4c66ff8420b63dddbc9737e04e3.zip
op-kernel-dev-2b2c009ecf71f4c66ff8420b63dddbc9737e04e3.tar.gz
mac80211: Add support for hardware ARP query filtering
Some hardware allow extended filtering of ARP frames not intended for the host. To perform such filtering, the hardware needs to know the current IP address(es) of the host, bound to its interface. Add support for ARP filtering to mac80211 by adding a new op to the driver interface, allowing to configure the current IP addresses. This op is called upon association with the currently configured address(es), and when associated whenever the IP address(es) change. This patch adds configuration of IPv4 addresses only, as IPv6 addresses don't need ARP filtering. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include')
-rw-r--r--include/net/mac80211.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index f26440a..74b9b49 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -19,6 +19,7 @@
#include <linux/wireless.h>
#include <linux/device.h>
#include <linux/ieee80211.h>
+#include <linux/inetdevice.h>
#include <net/cfg80211.h>
/**
@@ -1532,6 +1533,16 @@ enum ieee80211_ampdu_mlme_action {
* of the bss parameters has changed when a call is made. The callback
* can sleep.
*
+ * @configure_arp_filter: Configuration function for hardware ARP query filter.
+ * This function is called with all the IP addresses configured to the
+ * interface as argument - all ARP queries targeted to any of these
+ * addresses must pass through. If the hardware filter does not support
+ * enought addresses, hardware filtering must be disabled. The ifa_list
+ * argument may be NULL, indicating that filtering must be disabled.
+ * This function is called upon association complete with current
+ * address(es), and while associated whenever the IP address(es) change.
+ * The callback can sleep.
+ *
* @prepare_multicast: Prepare for multicast filter configuration.
* This callback is optional, and its return value is passed
* to configure_filter(). This callback must be atomic.
@@ -1671,6 +1682,9 @@ struct ieee80211_ops {
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info,
u32 changed);
+ int (*configure_arp_filter)(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct in_ifaddr *ifa_list);
u64 (*prepare_multicast)(struct ieee80211_hw *hw,
struct netdev_hw_addr_list *mc_list);
void (*configure_filter)(struct ieee80211_hw *hw,
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