From 9b660c63ad28b60ef6efc0283238635b64a9ca4a Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 20 Oct 2021 21:13:10 +0200 Subject: [PATCH] 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 (cherry-picked from commit da4be02fcd5d642954b1c9d9855d9e8d1e6205f4) (cherry-picked from commit 63c01ad025981eaa841353dc0fc27e5017febe21) --- .../network/services/hostapd/files/hostapd.sh | 2 +- .../patches/711-wds_bridge_force.patch | 22 +++++++++++++++++++ .../hostapd/patches/740-snoop_iface.patch | 6 ++--- 3 files changed, 26 insertions(+), 4 deletions(-) create mode 100644 package/network/services/hostapd/patches/711-wds_bridge_force.patch diff --git a/package/network/services/hostapd/files/hostapd.sh b/package/network/services/hostapd/files/hostapd.sh index b5388ee46c..f79155221d 100644 --- a/package/network/services/hostapd/files/hostapd.sh +++ b/package/network/services/hostapd/files/hostapd.sh @@ -729,7 +729,7 @@ hostapd_set_bss_options() { } append bss_conf "ssid=$ssid" "$N" - [ -n "$network_bridge" ] && append bss_conf "bridge=$network_bridge" "$N" + [ -n "$network_bridge" ] && append bss_conf "bridge=$network_bridge${N}wds_bridge=" "$N" [ -n "$network_ifname" ] && append bss_conf "snoop_iface=$network_ifname" "$N" [ -n "$iapp_interface" ] && { local ifname diff --git a/package/network/services/hostapd/patches/711-wds_bridge_force.patch b/package/network/services/hostapd/patches/711-wds_bridge_force.patch new file mode 100644 index 0000000000..d3f8864a74 --- /dev/null +++ b/package/network/services/hostapd/patches/711-wds_bridge_force.patch @@ -0,0 +1,22 @@ +--- a/hostapd/config_file.c ++++ b/hostapd/config_file.c +@@ -2357,6 +2357,8 @@ static int hostapd_config_fill(struct ho + sizeof(conf->bss[0]->iface)); + } else if (os_strcmp(buf, "bridge") == 0) { + 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, "vlan_bridge") == 0) { + os_strlcpy(bss->vlan_bridge, pos, sizeof(bss->vlan_bridge)); + } else if (os_strcmp(buf, "wds_bridge") == 0) { +--- a/src/ap/ap_drv_ops.c ++++ b/src/ap/ap_drv_ops.c +@@ -340,8 +340,6 @@ int hostapd_set_wds_sta(struct hostapd_d + return -1; + if (hapd->conf->wds_bridge[0]) + bridge = hapd->conf->wds_bridge; +- else if (hapd->conf->bridge[0]) +- bridge = hapd->conf->bridge; + return hapd->driver->set_wds_sta(hapd->drv_priv, addr, aid, val, + bridge, ifname_wds); + } diff --git a/package/network/services/hostapd/patches/740-snoop_iface.patch b/package/network/services/hostapd/patches/740-snoop_iface.patch index 8d928f8505..d206ed7322 100644 --- a/package/network/services/hostapd/patches/740-snoop_iface.patch +++ b/package/network/services/hostapd/patches/740-snoop_iface.patch @@ -55,10 +55,10 @@ "x_snoop: Failed to initialize L2 packet processing %s", --- a/hostapd/config_file.c +++ b/hostapd/config_file.c -@@ -2357,6 +2357,8 @@ static int hostapd_config_fill(struct ho - sizeof(conf->bss[0]->iface)); - } else if (os_strcmp(buf, "bridge") == 0) { +@@ -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) { -- 2.30.2