Implement configure_data_frame_filters callback by using
the net-sysfs interfaces (if these are available).
Signed-off-by: Ilan Peer <ilan.peer@xxxxxxxxx>
---
src/drivers/driver_nl80211.c | 86 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 86 insertions(+)
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 798e694..034515f 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -9053,6 +9053,91 @@ static int nl80211_set_prob_oper_freq(void *priv, unsigned int freq)
#endif /* CONFIG_DRIVER_NL80211_QCA */
+static int nl80211_write_to_file(char *name, unsigned int val)
+{
+ int fd, len;
+ char tmp[128];
+
+ fd = open(name, O_RDWR);
+ if (fd < 0) {
+ wpa_printf(MSG_ERROR, "nl80211: failed to open %s. %s",
+ name, strerror(errno));
+ return fd;
+ }
+
+ len = os_snprintf(tmp, sizeof(tmp), "%u\n", val);
+ len = write(fd, tmp, len);
+ if (len < 0)
+ wpa_printf(MSG_ERROR, "nl80211: failed to write to %s. %s",
+ name, strerror(errno));
+ close(fd);
+
+ return 0;
+}
+
+
+static int nl80211_configure_data_frame_filters(void *priv, u32 filter_flags)
+{
+ struct i802_bss *bss = priv;
+ char path[128];
+ int ret;
+
+ wpa_printf(MSG_DEBUG, "nl80211: data frame filter flags=0x%x",
+ filter_flags);
+
+ /* Configure filtering of unicast frame encrypted using GTK */
+ ret = os_snprintf(path, sizeof(path),
+ "/proc/sys/net/ipv4/conf/%s/drop_unicast_in_l2_multicast",
+ bss->ifname);
+
+ ret = nl80211_write_to_file(path,
+ !!(filter_flags & WPA_DATA_FRAME_FILTER_FLAG_GTK));
+ if (ret) {
+ wpa_printf(MSG_ERROR,
+ "nl80211: Failed set IPv4 unicast in multicast filter");
+ return ret;
+ }
+
+ os_snprintf(path, sizeof(path),
+ "/proc/sys/net/ipv6/conf/%s/drop_unicast_in_l2_multicast",
+ bss->ifname);
+ ret = nl80211_write_to_file(path,
+ !!(filter_flags & WPA_DATA_FRAME_FILTER_FLAG_GTK));
+
+ if (ret) {
+ wpa_printf(MSG_ERROR,
+ "nl80211: Failed set IPv6 unicast in multicast filter");
+ return ret;
+ }
+
+ /* Configure filtering of unicast frame encrypted using GTK */
+ os_snprintf(path, sizeof(path),
+ "/proc/sys/net/ipv4/conf/%s/drop_gratuitous_arp",
+ bss->ifname);
+ ret = nl80211_write_to_file(path,
+ !!(filter_flags & WPA_DATA_FRAME_FILTER_FLAG_ARP));
+ if (ret) {
+ wpa_printf(MSG_ERROR,
+ "nl80211: Failed set gratuitous ARP filter");
+ return ret;
+ }
+
+ /* Configure filtering of IPv6 NA frames */
+ os_snprintf(path, sizeof(path),
+ "/proc/sys/net/ipv6/conf/%s/drop_unsolicited_na",
+ bss->ifname);
+ ret = nl80211_write_to_file(path,
+ !!(filter_flags & WPA_DATA_FRAME_FILTER_FLAG_NA));
+ if (ret) {
+ wpa_printf(MSG_ERROR,
+ "nl80211: Failed set unsolicited NA filter");
+ return ret;
+ }
+
+ return 0;
+}
+
+
const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.name = "nl80211",
.desc = "Linux nl80211/cfg80211",
@@ -9169,4 +9254,5 @@ const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.get_pref_freq_list = nl80211_get_pref_freq_list,
.set_prob_oper_freq = nl80211_set_prob_oper_freq,
#endif /* CONFIG_DRIVER_NL80211_QCA */
+ .configure_data_frame_filters = nl80211_configure_data_frame_filters,
};
--
1.9.1
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