From 571e722676fe386bb66f72a75b64a6ebf535c077 Mon Sep 17 00:00:00 2001 From: Roopa Prabhu Date: Tue, 21 Jul 2015 10:43:47 +0200 Subject: ipv4: support for fib route lwtunnel encap attributes This patch adds support in ipv4 fib functions to parse user provided encap attributes and attach encap state data to fib_nh and rtable. Signed-off-by: Roopa Prabhu Signed-off-by: David S. Miller --- include/net/route.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/route.h') diff --git a/include/net/route.h b/include/net/route.h index fe22d03afb6a..2d45f419477f 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -66,6 +66,7 @@ struct rtable { struct list_head rt_uncached; struct uncached_list *rt_uncached_list; + struct lwtunnel_state *rt_lwtstate; }; static inline bool rt_is_input_route(const struct rtable *rt) -- cgit v1.2.1 From 613d09b30f8b589d5a9b49775054c8865db95d1c Mon Sep 17 00:00:00 2001 From: David Ahern Date: Thu, 13 Aug 2015 14:59:02 -0600 Subject: net: Use VRF device index for lookups on TX As with ingress use the index of VRF master device for route lookups on egress. However, the oif should only be used to direct the lookups to a specific table. Routes in the table are not based on the VRF device but rather interfaces that are part of the VRF so do not consider the oif for lookups within the table. The FLOWI_FLAG_VRFSRC is used to control this latter part. Signed-off-by: Shrijeet Mukherjee Signed-off-by: David Ahern Signed-off-by: David S. Miller --- include/net/route.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/net/route.h') diff --git a/include/net/route.h b/include/net/route.h index 2d45f419477f..94189d4bd899 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -251,6 +251,9 @@ static inline void ip_route_connect_init(struct flowi4 *fl4, __be32 dst, __be32 if (inet_sk(sk)->transparent) flow_flags |= FLOWI_FLAG_ANYSRC; + if (netif_index_is_vrf(sock_net(sk), oif)) + flow_flags |= FLOWI_FLAG_VRFSRC; + flowi4_init_output(fl4, oif, sk->sk_mark, tos, RT_SCOPE_UNIVERSE, protocol, flow_flags, dst, src, dport, sport); } -- cgit v1.2.1 From 15be405eb2ea943ac5fa2aab7d0ba282e9ef1301 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Thu, 13 Aug 2015 14:59:04 -0600 Subject: net: Add inet_addr lookup by table Currently inet_addr_type and inet_dev_addr_type expect local addresses to be in the local table. With the VRF device local routes for devices associated with a VRF will be in the table associated with the VRF. Provide an alternate inet_addr lookup to use a specific table rather than defaulting to the local table. Signed-off-by: Shrijeet Mukherjee Signed-off-by: David Ahern Signed-off-by: David S. Miller --- include/net/route.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/route.h') diff --git a/include/net/route.h b/include/net/route.h index 94189d4bd899..6ba681f0b98d 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -189,6 +189,7 @@ void ipv4_sk_redirect(struct sk_buff *skb, struct sock *sk); void ip_rt_send_redirect(struct sk_buff *skb); unsigned int inet_addr_type(struct net *net, __be32 addr); +unsigned int inet_addr_type_table(struct net *net, __be32 addr, int tb_id); unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev, __be32 addr); void ip_rt_multicast_event(struct in_device *); -- cgit v1.2.1 From 30bbaa19500559d7625c65632195413f639b3b97 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Thu, 13 Aug 2015 14:59:05 -0600 Subject: net: Fix up inet_addr_type checks Currently inet_addr_type and inet_dev_addr_type expect local addresses to be in the local table. With the VRF device local routes for devices associated with a VRF will be in the table associated with the VRF. Provide an alternate inet_addr lookup to use a specific table rather than defaulting to the local table. inet_addr_type_dev_table keeps the same semantics as inet_addr_type but if the passed in device is enslaved to a VRF then the table for that VRF is used for the lookup. Signed-off-by: David Ahern Signed-off-by: David S. Miller --- include/net/route.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/net/route.h') diff --git a/include/net/route.h b/include/net/route.h index 6ba681f0b98d..6dda2c1bf8c6 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -192,6 +192,9 @@ unsigned int inet_addr_type(struct net *net, __be32 addr); unsigned int inet_addr_type_table(struct net *net, __be32 addr, int tb_id); unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev, __be32 addr); +unsigned int inet_addr_type_dev_table(struct net *net, + const struct net_device *dev, + __be32 addr); void ip_rt_multicast_event(struct in_device *); int ip_rt_ioctl(struct net *, unsigned int cmd, void __user *arg); void ip_rt_get_source(u8 *src, struct sk_buff *skb, struct rtable *rt); -- cgit v1.2.1 From 61adedf3e3f1d3f032c5a6a299978d91eff6d555 Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Thu, 20 Aug 2015 13:56:25 +0200 Subject: route: move lwtunnel state to dst_entry Currently, the lwtunnel state resides in per-protocol data. This is a problem if we encapsulate ipv6 traffic in an ipv4 tunnel (or vice versa). The xmit function of the tunnel does not know whether the packet has been routed to it by ipv4 or ipv6, yet it needs the lwtstate data. Moving the lwtstate data to dst_entry makes such inter-protocol tunneling possible. As a bonus, this brings a nice diffstat. Signed-off-by: Jiri Benc Acked-by: Roopa Prabhu Acked-by: Thomas Graf Signed-off-by: David S. Miller --- include/net/route.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/net/route.h') diff --git a/include/net/route.h b/include/net/route.h index 6dda2c1bf8c6..395d79bb556c 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -66,7 +66,6 @@ struct rtable { struct list_head rt_uncached; struct uncached_list *rt_uncached_list; - struct lwtunnel_state *rt_lwtstate; }; static inline bool rt_is_input_route(const struct rtable *rt) -- cgit v1.2.1 From 9b8ff51822893e743eee09350c1928daa3ef503f Mon Sep 17 00:00:00 2001 From: David Ahern Date: Tue, 1 Sep 2015 14:26:35 -0600 Subject: net: Make table id type u32 A number of VRF patches used 'int' for table id. It should be u32 to be consistent with the rest of the stack. Fixes: 4e3c89920cd3a ("net: Introduce VRF related flags and helpers") 15be405eb2ea9 ("net: Add inet_addr lookup by table") 30bbaa1950055 ("net: Fix up inet_addr_type checks") 021dd3b8a142d ("net: Add routes to the table associated with the device") dc028da54ed35 ("inet: Move VRF table lookup to inlined function") f6d3c19274c74 ("net: FIB tracepoints") Signed-off-by: David Ahern Reviewed-by: Nikolay Aleksandrov Signed-off-by: David S. Miller --- include/net/route.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/net/route.h') diff --git a/include/net/route.h b/include/net/route.h index 395d79bb556c..cc61cb95f059 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -188,7 +188,7 @@ void ipv4_sk_redirect(struct sk_buff *skb, struct sock *sk); void ip_rt_send_redirect(struct sk_buff *skb); unsigned int inet_addr_type(struct net *net, __be32 addr); -unsigned int inet_addr_type_table(struct net *net, __be32 addr, int tb_id); +unsigned int inet_addr_type_table(struct net *net, __be32 addr, u32 tb_id); unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev, __be32 addr); unsigned int inet_addr_type_dev_table(struct net *net, -- cgit v1.2.1