From 2044b9ec623e04abed0288a9561652a84f321574 Mon Sep 17 00:00:00 2001
From: Oskar Viljasaar <oskar.viljasaar@iopsys.eu>
Date: Tue, 19 Jan 2021 10:47:07 +0100
Subject: [PATCH] Import openwrt hack patch
640-bridge-only-accept-EAP-locally.patch
---
net/bridge/br_input.c | 6 +++++-
net/bridge/br_private.h | 2 ++
net/bridge/br_sysfs_br.c | 25 +++++++++++++++++++++++++
3 files changed, 32 insertions(+), 1 deletion(-)
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 6d416a4c7f..f8699ecbec 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -108,10 +108,14 @@ int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb
}
}
+ BR_INPUT_SKB_CB(skb)->brdev = br->dev;
+
+ if (skb->protocol == htons(ETH_P_PAE) && !br->disable_eap_hack)
+ return br_pass_frame_up(skb);
+
if (p->state == BR_STATE_LEARNING)
goto drop;
- BR_INPUT_SKB_CB(skb)->brdev = br->dev;
BR_INPUT_SKB_CB(skb)->src_port_isolated = !!(p->flags & BR_ISOLATED);
if (IS_ENABLED(CONFIG_INET) &&
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 33b8222db7..5690a29f8a 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -337,6 +337,8 @@ struct net_bridge {
u16 group_fwd_mask;
u16 group_fwd_mask_required;
+ bool disable_eap_hack;
+
/* STP */
bridge_id designated_root;
bridge_id bridge_id;
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 0318a69888..47c515afd0 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -170,6 +170,30 @@ static ssize_t group_fwd_mask_store(struct device *d,
}
static DEVICE_ATTR_RW(group_fwd_mask);
+static ssize_t disable_eap_hack_show(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct net_bridge *br = to_bridge(d);
+ return sprintf(buf, "%u\n", br->disable_eap_hack);
+}
+
+static int set_disable_eap_hack(struct net_bridge *br, unsigned long val)
+{
+ br->disable_eap_hack = !!val;
+
+ return 0;
+}
+
+static ssize_t disable_eap_hack_store(struct device *d,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ return store_bridge_parm(d, buf, len, set_disable_eap_hack);
+}
+static DEVICE_ATTR_RW(disable_eap_hack);
+
static ssize_t priority_show(struct device *d, struct device_attribute *attr,
char *buf)
{
@@ -810,6 +834,7 @@ static struct attribute *bridge_attrs[] = {
&dev_attr_ageing_time.attr,
&dev_attr_stp_state.attr,
&dev_attr_group_fwd_mask.attr,
+ &dev_attr_disable_eap_hack.attr,
&dev_attr_priority.attr,
&dev_attr_bridge_id.attr,
&dev_attr_root_id.attr,
--
GitLab