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ip_tunnels: add IPv6 addresses to ip_tunnel_key 

Add the IPv6 addresses as an union with IPv4 ones. When using IPv4, the
newly introduced padding after the IPv4 addresses needs to be zeroed out.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Benc 2015-08-20 13:56:23 +02:00 committed by David S. Miller
parent 376534a3d1
commit c1ea5d672a
10 changed files with 48 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/vxlan.c
View File

@ -1276,8 +1276,8 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
goto drop;
info = &tun_dst->u.tun_info;
info->key.ipv4_src = iph->saddr;
info->key.ipv4_dst = iph->daddr;
info->key.u.ipv4.src = iph->saddr;
info->key.u.ipv4.dst = iph->daddr;
info->key.ipv4_tos = iph->tos;
info->key.ipv4_ttl = iph->ttl;
info->key.tp_src = udp_hdr(skb)->source;
@ -1925,7 +1925,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
dst_port = info->key.tp_dst ? : vxlan->cfg.dst_port;
vni = be64_to_cpu(info->key.tun_id);
remote_ip.sin.sin_family = AF_INET;
remote_ip.sin.sin_addr.s_addr = info->key.ipv4_dst;
remote_ip.sin.sin_addr.s_addr = info->key.u.ipv4.dst;
dst = &remote_ip;
}

24
include/net/ip_tunnels.h
View File

@ -25,10 +25,24 @@
/* Used to memset ip_tunnel padding. */
#define IP_TUNNEL_KEY_SIZE offsetofend(struct ip_tunnel_key, tp_dst)
/* Used to memset ipv4 address padding. */
#define IP_TUNNEL_KEY_IPV4_PAD offsetofend(struct ip_tunnel_key, u.ipv4.dst)
#define IP_TUNNEL_KEY_IPV4_PAD_LEN \
(FIELD_SIZEOF(struct ip_tunnel_key, u) - \
FIELD_SIZEOF(struct ip_tunnel_key, u.ipv4))
struct ip_tunnel_key {
__be64 tun_id;
__be32 ipv4_src;
__be32 ipv4_dst;
union {
struct {
__be32 src;
__be32 dst;
} ipv4;
struct {
struct in6_addr src;
struct in6_addr dst;
} ipv6;
} u;
__be16 tun_flags;
u8 ipv4_tos;
u8 ipv4_ttl;
@ -177,8 +191,10 @@ static inline void __ip_tunnel_info_init(struct ip_tunnel_info *tun_info,
const void *opts, u8 opts_len)
{
tun_info->key.tun_id = tun_id;
tun_info->key.ipv4_src = saddr;
tun_info->key.ipv4_dst = daddr;
tun_info->key.u.ipv4.src = saddr;
tun_info->key.u.ipv4.dst = daddr;
memset((unsigned char *)&tun_info->key + IP_TUNNEL_KEY_IPV4_PAD,
0, IP_TUNNEL_KEY_IPV4_PAD_LEN);
tun_info->key.ipv4_tos = tos;
tun_info->key.ipv4_ttl = ttl;
tun_info->key.tun_flags = tun_flags;

4
net/core/filter.c
View File

@ -1495,7 +1495,7 @@ static u64 bpf_skb_get_tunnel_key(u64 r1, u64 r2, u64 size, u64 flags, u64 r5)
return -EINVAL;
to->tunnel_id = be64_to_cpu(info->key.tun_id);
to->remote_ipv4 = be32_to_cpu(info->key.ipv4_src);
to->remote_ipv4 = be32_to_cpu(info->key.u.ipv4.src);
return 0;
}
@ -1529,7 +1529,7 @@ static u64 bpf_skb_set_tunnel_key(u64 r1, u64 r2, u64 size, u64 flags, u64 r5)
info = &md->u.tun_info;
info->mode = IP_TUNNEL_INFO_TX;
info->key.tun_id = cpu_to_be64(from->tunnel_id);
info->key.ipv4_dst = cpu_to_be32(from->remote_ipv4);
info->key.u.ipv4.dst = cpu_to_be32(from->remote_ipv4);
return 0;
}

10
net/ipv4/ip_gre.c
View File

@ -407,8 +407,8 @@ static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi)
return PACKET_REJECT;
info = &tun_dst->u.tun_info;
info->key.ipv4_src = iph->saddr;
info->key.ipv4_dst = iph->daddr;
info->key.u.ipv4.src = iph->saddr;
info->key.u.ipv4.dst = iph->daddr;
info->key.ipv4_tos = iph->tos;
info->key.ipv4_ttl = iph->ttl;
@ -527,8 +527,8 @@ static void gre_fb_xmit(struct sk_buff *skb, struct net_device *dev)
key = &tun_info->key;
memset(&fl, 0, sizeof(fl));
fl.daddr = key->ipv4_dst;
fl.saddr = key->ipv4_src;
fl.daddr = key->u.ipv4.dst;
fl.saddr = key->u.ipv4.src;
fl.flowi4_tos = RT_TOS(key->ipv4_tos);
fl.flowi4_mark = skb->mark;
fl.flowi4_proto = IPPROTO_GRE;
@ -564,7 +564,7 @@ static void gre_fb_xmit(struct sk_buff *skb, struct net_device *dev)
df = key->tun_flags & TUNNEL_DONT_FRAGMENT ? htons(IP_DF) : 0;
err = iptunnel_xmit(skb->sk, rt, skb, fl.saddr,
key->ipv4_dst, IPPROTO_GRE,
key->u.ipv4.dst, IPPROTO_GRE,
key->ipv4_tos, key->ipv4_ttl, df, false);
iptunnel_xmit_stats(err, &dev->stats, dev->tstats);
return;

8
net/ipv4/ip_tunnel_core.c
View File

@ -227,10 +227,10 @@ static int ip_tun_build_state(struct net_device *dev, struct nlattr *attr,
tun_info->key.tun_id = nla_get_u64(tb[LWTUNNEL_IP_ID]);
if (tb[LWTUNNEL_IP_DST])
tun_info->key.ipv4_dst = nla_get_be32(tb[LWTUNNEL_IP_DST]);
tun_info->key.u.ipv4.dst = nla_get_be32(tb[LWTUNNEL_IP_DST]);
if (tb[LWTUNNEL_IP_SRC])
tun_info->key.ipv4_src = nla_get_be32(tb[LWTUNNEL_IP_SRC]);
tun_info->key.u.ipv4.src = nla_get_be32(tb[LWTUNNEL_IP_SRC]);
if (tb[LWTUNNEL_IP_TTL])
tun_info->key.ipv4_ttl = nla_get_u8(tb[LWTUNNEL_IP_TTL]);
@ -262,8 +262,8 @@ static int ip_tun_fill_encap_info(struct sk_buff *skb,
struct ip_tunnel_info *tun_info = lwt_tun_info(lwtstate);
if (nla_put_u64(skb, LWTUNNEL_IP_ID, tun_info->key.tun_id) ||
nla_put_be32(skb, LWTUNNEL_IP_DST, tun_info->key.ipv4_dst) ||
nla_put_be32(skb, LWTUNNEL_IP_SRC, tun_info->key.ipv4_src) ||
nla_put_be32(skb, LWTUNNEL_IP_DST, tun_info->key.u.ipv4.dst) ||
nla_put_be32(skb, LWTUNNEL_IP_SRC, tun_info->key.u.ipv4.src) ||
nla_put_u8(skb, LWTUNNEL_IP_TOS, tun_info->key.ipv4_tos) ||
nla_put_u8(skb, LWTUNNEL_IP_TTL, tun_info->key.ipv4_ttl) ||
nla_put_u16(skb, LWTUNNEL_IP_SPORT, tun_info->key.tp_src) ||

18
net/openvswitch/flow_netlink.c
View File

@ -534,11 +534,11 @@ static int ipv4_tun_from_nlattr(const struct nlattr *attr,
tun_flags |= TUNNEL_KEY;
break;
case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
SW_FLOW_KEY_PUT(match, tun_key.ipv4_src,
SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.src,
nla_get_in_addr(a), is_mask);
break;
case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
SW_FLOW_KEY_PUT(match, tun_key.ipv4_dst,
SW_FLOW_KEY_PUT(match, tun_key.u.ipv4.dst,
nla_get_in_addr(a), is_mask);
break;
case OVS_TUNNEL_KEY_ATTR_TOS:
@ -609,7 +609,7 @@ static int ipv4_tun_from_nlattr(const struct nlattr *attr,
}
if (!is_mask) {
if (!match->key->tun_key.ipv4_dst) {
if (!match->key->tun_key.u.ipv4.dst) {
OVS_NLERR(log, "IPv4 tunnel dst address is zero");
return -EINVAL;
}
@ -647,13 +647,13 @@ static int __ipv4_tun_to_nlattr(struct sk_buff *skb,
if (output->tun_flags & TUNNEL_KEY &&
nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, output->tun_id))
return -EMSGSIZE;
if (output->ipv4_src &&
if (output->u.ipv4.src &&
nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC,
output->ipv4_src))
output->u.ipv4.src))
return -EMSGSIZE;
if (output->ipv4_dst &&
if (output->u.ipv4.dst &&
nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST,
output->ipv4_dst))
output->u.ipv4.dst))
return -EMSGSIZE;
if (output->ipv4_tos &&
nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->ipv4_tos))
@ -1116,7 +1116,7 @@ int ovs_nla_get_match(struct sw_flow_match *match,
/* The userspace does not send tunnel attributes that
* are 0, but we should not wildcard them nonetheless.
*/
if (match->key->tun_key.ipv4_dst)
if (match->key->tun_key.u.ipv4.dst)
SW_FLOW_KEY_MEMSET_FIELD(match, tun_key,
0xff, true);
@ -1287,7 +1287,7 @@ static int __ovs_nla_put_key(const struct sw_flow_key *swkey,
if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority))
goto nla_put_failure;
if ((swkey->tun_key.ipv4_dst || is_mask)) {
if ((swkey->tun_key.u.ipv4.dst || is_mask)) {
const void *opts = NULL;
if (output->tun_key.tun_flags & TUNNEL_OPTIONS_PRESENT)

2
net/openvswitch/flow_table.c
View File

@ -426,7 +426,7 @@ static u32 flow_hash(const struct sw_flow_key *key,
static int flow_key_start(const struct sw_flow_key *key)
{
if (key->tun_key.ipv4_dst)
if (key->tun_key.u.ipv4.dst)
return 0;
else
return rounddown(offsetof(struct sw_flow_key, phy),

2
net/openvswitch/vport-geneve.c
View File

@ -203,7 +203,7 @@ static int geneve_tnl_send(struct vport *vport, struct sk_buff *skb)
}
err = geneve_xmit_skb(geneve_port->gs, rt, skb, fl.saddr,
tun_key->ipv4_dst, tun_key->ipv4_tos,
tun_key->u.ipv4.dst, tun_key->ipv4_tos,
tun_key->ipv4_ttl, df, sport, dport,
tun_key->tun_flags, vni, opts_len, opts,
!!(tun_key->tun_flags & TUNNEL_CSUM), false);

2
net/openvswitch/vport.c
View File

@ -603,7 +603,7 @@ int ovs_tunnel_get_egress_info(struct ip_tunnel_info *egress_tun_info,
* saddr, tp_src and tp_dst
*/
__ip_tunnel_info_init(egress_tun_info,
fl.saddr, tun_key->ipv4_dst,
fl.saddr, tun_key->u.ipv4.dst,
tun_key->ipv4_tos,
tun_key->ipv4_ttl,
tp_src, tp_dst,

4
net/openvswitch/vport.h
View File

@ -254,8 +254,8 @@ static inline struct rtable *ovs_tunnel_route_lookup(struct net *net,
struct rtable *rt;
memset(fl, 0, sizeof(*fl));
fl->daddr = key->ipv4_dst;
fl->saddr = key->ipv4_src;
fl->daddr = key->u.ipv4.dst;
fl->saddr = key->u.ipv4.src;
fl->flowi4_tos = RT_TOS(key->ipv4_tos);
fl->flowi4_mark = mark;
fl->flowi4_proto = protocol;