openwrt/package/network/services/hostapd/patches/740-snoop_iface.patch
Felix Fietkau 9b660c63ad hostapd: fix a race condition on adding AP mode wds sta interfaces
Both hostapd and netifd attempt to add a VLAN device to a bridge.
Depending on which one wins the race, bridge vlan settings might be incomplete,
or hostapd might run into an error and refuse to service the client.
Fix this by preventing hostapd from adding interfaces to the bridge and
instead rely entirely on netifd handling this properly

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit da4be02fcd)
(cherry-picked from commit 63c01ad025)
2021-11-23 18:30:04 +01:00

67 lines
2.3 KiB
Diff

--- a/src/ap/ap_config.h
+++ b/src/ap/ap_config.h
@@ -278,6 +278,7 @@ struct hostapd_bss_config {
char iface[IFNAMSIZ + 1];
char bridge[IFNAMSIZ + 1];
char ft_iface[IFNAMSIZ + 1];
+ char snoop_iface[IFNAMSIZ + 1];
char vlan_bridge[IFNAMSIZ + 1];
char wds_bridge[IFNAMSIZ + 1];
--- a/src/ap/x_snoop.c
+++ b/src/ap/x_snoop.c
@@ -31,14 +31,16 @@ int x_snoop_init(struct hostapd_data *ha
return -1;
}
- if (hostapd_drv_br_port_set_attr(hapd, DRV_BR_PORT_ATTR_HAIRPIN_MODE,
+ if (!conf->snoop_iface[0] &&
+ hostapd_drv_br_port_set_attr(hapd, DRV_BR_PORT_ATTR_HAIRPIN_MODE,
1)) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to enable hairpin_mode on the bridge port");
return -1;
}
- if (hostapd_drv_br_port_set_attr(hapd, DRV_BR_PORT_ATTR_PROXYARP, 1)) {
+ if (!conf->snoop_iface[0] &&
+ hostapd_drv_br_port_set_attr(hapd, DRV_BR_PORT_ATTR_PROXYARP, 1)) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to enable proxyarp on the bridge port");
return -1;
@@ -52,7 +54,8 @@ int x_snoop_init(struct hostapd_data *ha
}
#ifdef CONFIG_IPV6
- if (hostapd_drv_br_set_net_param(hapd, DRV_BR_MULTICAST_SNOOPING, 1)) {
+ if (!conf->snoop_iface[0] &&
+ hostapd_drv_br_set_net_param(hapd, DRV_BR_MULTICAST_SNOOPING, 1)) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to enable multicast snooping on the bridge");
return -1;
@@ -71,8 +74,12 @@ x_snoop_get_l2_packet(struct hostapd_dat
{
struct hostapd_bss_config *conf = hapd->conf;
struct l2_packet_data *l2;
+ const char *ifname = conf->bridge;
- l2 = l2_packet_init(conf->bridge, NULL, ETH_P_ALL, handler, hapd, 1);
+ if (conf->snoop_iface[0])
+ ifname = conf->snoop_iface;
+
+ l2 = l2_packet_init(ifname, NULL, ETH_P_ALL, handler, hapd, 1);
if (l2 == NULL) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to initialize L2 packet processing %s",
--- a/hostapd/config_file.c
+++ b/hostapd/config_file.c
@@ -2359,6 +2359,8 @@ static int hostapd_config_fill(struct ho
os_strlcpy(bss->bridge, pos, sizeof(bss->bridge));
if (!bss->wds_bridge[0])
os_strlcpy(bss->wds_bridge, pos, sizeof(bss->wds_bridge));
+ } else if (os_strcmp(buf, "snoop_iface") == 0) {
+ os_strlcpy(bss->snoop_iface, pos, sizeof(bss->snoop_iface));
} else if (os_strcmp(buf, "vlan_bridge") == 0) {
os_strlcpy(bss->vlan_bridge, pos, sizeof(bss->vlan_bridge));
} else if (os_strcmp(buf, "wds_bridge") == 0) {