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author | Tom Herbert <tom@herbertland.com> | 2016-05-18 09:06:20 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2016-05-20 18:03:17 -0400 |
commit | b3a27b519b22d4bf03788f6826190d4c5a130b3c (patch) | |
tree | 8edffc310690de8ef09b59f623d59fc406b02198 | |
parent | 1faf3d9f7c06c803397665ada1448f374e8f48e0 (diff) | |
download | blackbird-op-linux-b3a27b519b22d4bf03788f6826190d4c5a130b3c.tar.gz blackbird-op-linux-b3a27b519b22d4bf03788f6826190d4c5a130b3c.zip |
ip6_tunnel: Add support for fou/gue encapsulation
Add netlink and setup for encapsulation
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | net/ipv6/ip6_tunnel.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 64ddbeaca371..74b35e4aacd9 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 = { |