From: Stephen Suryaputra <ssuryaextr@gmail.com>
To: netdev@vger.kernel.org
Cc: Stephen Suryaputra <ssuryaextr@gmail.com>
Subject: [PATCH net,v3] vrf: check accept_source_route on the original netdevice
Date: Mon, 1 Apr 2019 09:17:32 -0400 [thread overview]
Message-ID: <20190401131732.22887-1-ssuryaextr@gmail.com> (raw)
Configuration check to accept source route IP options should be made on
the incoming netdevice when the skb->dev is an l3mdev master. The route
lookup for the source route next hop also needs the incoming netdev.
v2->v3:
- Simplify by passing the original netdevice down the stack (per David
Ahern).
Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com>
---
include/net/ip.h | 2 +-
net/ipv4/ip_input.c | 7 +++----
net/ipv4/ip_options.c | 4 ++--
3 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/include/net/ip.h b/include/net/ip.h
index be3cad9c2e4c..583526aad1d0 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -677,7 +677,7 @@ int ip_options_get_from_user(struct net *net, struct ip_options_rcu **optp,
unsigned char __user *data, int optlen);
void ip_options_undo(struct ip_options *opt);
void ip_forward_options(struct sk_buff *skb);
-int ip_options_rcv_srr(struct sk_buff *skb);
+int ip_options_rcv_srr(struct sk_buff *skb, struct net_device *dev);
/*
* Functions provided by ip_sockglue.c
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index ecce2dc78f17..1132d6d1796a 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -257,11 +257,10 @@ int ip_local_deliver(struct sk_buff *skb)
ip_local_deliver_finish);
}
-static inline bool ip_rcv_options(struct sk_buff *skb)
+static inline bool ip_rcv_options(struct sk_buff *skb, struct net_device *dev)
{
struct ip_options *opt;
const struct iphdr *iph;
- struct net_device *dev = skb->dev;
/* It looks as overkill, because not all
IP options require packet mangling.
@@ -297,7 +296,7 @@ static inline bool ip_rcv_options(struct sk_buff *skb)
}
}
- if (ip_options_rcv_srr(skb))
+ if (ip_options_rcv_srr(skb, dev))
goto drop;
}
@@ -353,7 +352,7 @@ static int ip_rcv_finish_core(struct net *net, struct sock *sk,
}
#endif
- if (iph->ihl > 5 && ip_rcv_options(skb))
+ if (iph->ihl > 5 && ip_rcv_options(skb, dev))
goto drop;
rt = skb_rtable(skb);
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 32a35043c9f5..3db31bb9df50 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -612,7 +612,7 @@ void ip_forward_options(struct sk_buff *skb)
}
}
-int ip_options_rcv_srr(struct sk_buff *skb)
+int ip_options_rcv_srr(struct sk_buff *skb, struct net_device *dev)
{
struct ip_options *opt = &(IPCB(skb)->opt);
int srrspace, srrptr;
@@ -647,7 +647,7 @@ int ip_options_rcv_srr(struct sk_buff *skb)
orefdst = skb->_skb_refdst;
skb_dst_set(skb, NULL);
- err = ip_route_input(skb, nexthop, iph->saddr, iph->tos, skb->dev);
+ err = ip_route_input(skb, nexthop, iph->saddr, iph->tos, dev);
rt2 = skb_rtable(skb);
if (err || (rt2->rt_type != RTN_UNICAST && rt2->rt_type != RTN_LOCAL)) {
skb_dst_drop(skb);
--
2.17.1
next reply other threads:[~2019-04-01 13:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-01 13:17 Stephen Suryaputra [this message]
2019-04-01 15:14 ` [PATCH net,v3] vrf: check accept_source_route on the original netdevice David Ahern
2019-04-01 17:45 ` David Miller
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