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Date: Wed, 18 May 2016 09:06:20 -0700
From: Tom Herbert <tom@...bertland.com>
To: <davem@...emloft.net>, <netdev@...r.kernel.org>
CC: <kernel-team@...com>
Subject: [PATCH v7 net-next 12/16] ip6_tunnel: Add support for fou/gue encapsulation
Add netlink and setup for encapsulation
Signed-off-by: Tom Herbert <tom@...bertland.com>
---
net/ipv6/ip6_tunnel.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 64ddbeac..74b35e4 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1797,13 +1797,55 @@ static void ip6_tnl_netlink_parms(struct nlattr *data[],
parms->proto = nla_get_u8(data[IFLA_IPTUN_PROTO]);
}
+static bool ip6_tnl_netlink_encap_parms(struct nlattr *data[],
+ struct ip_tunnel_encap *ipencap)
+{
+ bool ret = false;
+
+ memset(ipencap, 0, sizeof(*ipencap));
+
+ if (!data)
+ return ret;
+
+ if (data[IFLA_IPTUN_ENCAP_TYPE]) {
+ ret = true;
+ ipencap->type = nla_get_u16(data[IFLA_IPTUN_ENCAP_TYPE]);
+ }
+
+ if (data[IFLA_IPTUN_ENCAP_FLAGS]) {
+ ret = true;
+ ipencap->flags = nla_get_u16(data[IFLA_IPTUN_ENCAP_FLAGS]);
+ }
+
+ if (data[IFLA_IPTUN_ENCAP_SPORT]) {
+ ret = true;
+ ipencap->sport = nla_get_be16(data[IFLA_IPTUN_ENCAP_SPORT]);
+ }
+
+ if (data[IFLA_IPTUN_ENCAP_DPORT]) {
+ ret = true;
+ ipencap->dport = nla_get_be16(data[IFLA_IPTUN_ENCAP_DPORT]);
+ }
+
+ return ret;
+}
+
static int ip6_tnl_newlink(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
struct net *net = dev_net(dev);
struct ip6_tnl *nt, *t;
+ struct ip_tunnel_encap ipencap;
nt = netdev_priv(dev);
+
+ if (ip6_tnl_netlink_encap_parms(data, &ipencap)) {
+ int err = ip6_tnl_encap_setup(nt, &ipencap);
+
+ if (err < 0)
+ return err;
+ }
+
ip6_tnl_netlink_parms(data, &nt->parms);
t = ip6_tnl_locate(net, &nt->parms, 0);
@@ -1820,10 +1862,17 @@ static int ip6_tnl_changelink(struct net_device *dev, struct nlattr *tb[],
struct __ip6_tnl_parm p;
struct net *net = t->net;
struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
+ struct ip_tunnel_encap ipencap;
if (dev == ip6n->fb_tnl_dev)
return -EINVAL;
+ if (ip6_tnl_netlink_encap_parms(data, &ipencap)) {
+ int err = ip6_tnl_encap_setup(t, &ipencap);
+
+ if (err < 0)
+ return err;
+ }
ip6_tnl_netlink_parms(data, &p);
t = ip6_tnl_locate(net, &p, 0);
@@ -1864,6 +1913,14 @@ static size_t ip6_tnl_get_size(const struct net_device *dev)
nla_total_size(4) +
/* IFLA_IPTUN_PROTO */
nla_total_size(1) +
+ /* IFLA_IPTUN_ENCAP_TYPE */
+ nla_total_size(2) +
+ /* IFLA_IPTUN_ENCAP_FLAGS */
+ nla_total_size(2) +
+ /* IFLA_IPTUN_ENCAP_SPORT */
+ nla_total_size(2) +
+ /* IFLA_IPTUN_ENCAP_DPORT */
+ nla_total_size(2) +
0;
}
@@ -1881,6 +1938,17 @@ static int ip6_tnl_fill_info(struct sk_buff *skb, const struct net_device *dev)
nla_put_u32(skb, IFLA_IPTUN_FLAGS, parm->flags) ||
nla_put_u8(skb, IFLA_IPTUN_PROTO, parm->proto))
goto nla_put_failure;
+
+ if (nla_put_u16(skb, IFLA_IPTUN_ENCAP_TYPE,
+ tunnel->encap.type) ||
+ nla_put_be16(skb, IFLA_IPTUN_ENCAP_SPORT,
+ tunnel->encap.sport) ||
+ nla_put_be16(skb, IFLA_IPTUN_ENCAP_DPORT,
+ tunnel->encap.dport) ||
+ nla_put_u16(skb, IFLA_IPTUN_ENCAP_FLAGS,
+ tunnel->encap.flags))
+ goto nla_put_failure;
+
return 0;
nla_put_failure:
@@ -1904,6 +1972,10 @@ static const struct nla_policy ip6_tnl_policy[IFLA_IPTUN_MAX + 1] = {
[IFLA_IPTUN_FLOWINFO] = { .type = NLA_U32 },
[IFLA_IPTUN_FLAGS] = { .type = NLA_U32 },
[IFLA_IPTUN_PROTO] = { .type = NLA_U8 },
+ [IFLA_IPTUN_ENCAP_TYPE] = { .type = NLA_U16 },
+ [IFLA_IPTUN_ENCAP_FLAGS] = { .type = NLA_U16 },
+ [IFLA_IPTUN_ENCAP_SPORT] = { .type = NLA_U16 },
+ [IFLA_IPTUN_ENCAP_DPORT] = { .type = NLA_U16 },
};
static struct rtnl_link_ops ip6_link_ops __read_mostly = {
--
2.8.0.rc2
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