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nl80211: Implement configure_data_frame_filters() callback

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Implement configure_data_frame_filters() callback by using
the net-sysfs interfaces (if these are available).

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
This commit is contained in:
Ilan Peer 2016-04-06 17:14:42 +03:00 committed by Jouni Malinen
parent ece4ac5f4e
commit 6922d440de
1 changed files with 90 additions and 0 deletions
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90
src/drivers/driver_nl80211.c
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@ -9060,6 +9060,95 @@ static int nl80211_set_prob_oper_freq(void *priv, unsigned int freq)
#endif /* CONFIG_DRIVER_NL80211_QCA */
static int nl80211_write_to_file(const 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 to 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 to 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 to set unsolicited NA filter");
return ret;
}
return 0;
}
const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.name = "nl80211",
.desc = "Linux nl80211/cfg80211",
@ -9176,4 +9265,5 @@ 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,
};