vxlan: call peernet2id() in fdb notification

[mirror_ubuntu-artful-kernel.git] / drivers / net / vxlan.c

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index da4e3d6632f647f95b6fdbc0d22abf098afdbe01..9735059dee9941526e7cb0b92986eee5db1af1b7 100644 (file)
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -27,7 +27,6 @@
 #include <net/net_namespace.h>
 #include <net/netns/generic.h>
 #include <net/vxlan.h>
-#include <net/protocol.h>
 
 #if IS_ENABLED(CONFIG_IPV6)
 #include <net/ip6_tunnel.h>
@@ -288,7 +287,7 @@ static int vxlan_fdb_info(struct sk_buff *skb, struct vxlan_dev *vxlan,
 
        if (!net_eq(dev_net(vxlan->dev), vxlan->net) &&
            nla_put_s32(skb, NDA_LINK_NETNSID,
-                       peernet2id_alloc(dev_net(vxlan->dev), vxlan->net)))
+                       peernet2id(dev_net(vxlan->dev), vxlan->net)))
                goto nla_put_failure;
 
        if (send_eth && nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->eth_addr))
@@ -861,20 +860,20 @@ out:
 /* Dump forwarding table */
 static int vxlan_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
                          struct net_device *dev,
-                         struct net_device *filter_dev, int idx)
+                         struct net_device *filter_dev, int *idx)
 {
        struct vxlan_dev *vxlan = netdev_priv(dev);
        unsigned int h;
+       int err = 0;
 
        for (h = 0; h < FDB_HASH_SIZE; ++h) {
                struct vxlan_fdb *f;
-               int err;
 
                hlist_for_each_entry_rcu(f, &vxlan->fdb_head[h], hlist) {
                        struct vxlan_rdst *rd;
 
                        list_for_each_entry_rcu(rd, &f->remotes, list) {
-                               if (idx < cb->args[0])
+                               if (*idx < cb->args[2])
                                        goto skip;
 
                                err = vxlan_fdb_info(skb, vxlan, f,
@@ -882,17 +881,15 @@ static int vxlan_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
                                                     cb->nlh->nlmsg_seq,
                                                     RTM_NEWNEIGH,
                                                     NLM_F_MULTI, rd);
-                               if (err < 0) {
-                                       cb->args[1] = err;
+                               if (err < 0)
                                        goto out;
-                               }
 skip:
-                               ++idx;
+                               *idx += 1;
                        }
                }
        }
 out:
-       return idx;
+       return err;
 }
 
 /* Watch incoming packets to learn mapping between Ethernet address
@@ -1811,7 +1808,7 @@ static struct rtable *vxlan_get_route(struct vxlan_dev *vxlan,
        fl4.flowi4_mark = skb->mark;
        fl4.flowi4_proto = IPPROTO_UDP;
        fl4.daddr = daddr;
-       fl4.saddr = vxlan->cfg.saddr.sin.sin_addr.s_addr;
+       fl4.saddr = *saddr;
 
        rt = ip_route_output_key(vxlan->net, &fl4);
        if (!IS_ERR(rt)) {
@@ -1847,7 +1844,7 @@ static struct dst_entry *vxlan6_get_route(struct vxlan_dev *vxlan,
        memset(&fl6, 0, sizeof(fl6));
        fl6.flowi6_oif = oif;
        fl6.daddr = *daddr;
-       fl6.saddr = vxlan->cfg.saddr.sin6.sin6_addr;
+       fl6.saddr = *saddr;
        fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tos), label);
        fl6.flowi6_mark = skb->mark;
        fl6.flowi6_proto = IPPROTO_UDP;
@@ -1920,7 +1917,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
        struct rtable *rt = NULL;
        const struct iphdr *old_iph;
        union vxlan_addr *dst;
-       union vxlan_addr remote_ip;
+       union vxlan_addr remote_ip, local_ip;
+       union vxlan_addr *src;
        struct vxlan_metadata _md;
        struct vxlan_metadata *md = &_md;
        __be16 src_port = 0, dst_port;
@@ -1938,6 +1936,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
                dst_port = rdst->remote_port ? rdst->remote_port : vxlan->cfg.dst_port;
                vni = rdst->remote_vni;
                dst = &rdst->remote_ip;
+               src = &vxlan->cfg.saddr;
                dst_cache = &rdst->dst_cache;
        } else {
                if (!info) {
@@ -1948,11 +1947,15 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
                dst_port = info->key.tp_dst ? : vxlan->cfg.dst_port;
                vni = vxlan_tun_id_to_vni(info->key.tun_id);
                remote_ip.sa.sa_family = ip_tunnel_info_af(info);
-               if (remote_ip.sa.sa_family == AF_INET)
+               if (remote_ip.sa.sa_family == AF_INET) {
                        remote_ip.sin.sin_addr.s_addr = info->key.u.ipv4.dst;
-               else
+                       local_ip.sin.sin_addr.s_addr = info->key.u.ipv4.src;
+               } else {
                        remote_ip.sin6.sin6_addr = info->key.u.ipv6.dst;
+                       local_ip.sin6.sin6_addr = info->key.u.ipv6.src;
+               }
                dst = &remote_ip;
+               src = &local_ip;
                dst_cache = &info->dst_cache;
        }
 
@@ -1992,15 +1995,14 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
        }
 
        if (dst->sa.sa_family == AF_INET) {
-               __be32 saddr;
-
                if (!vxlan->vn4_sock)
                        goto drop;
                sk = vxlan->vn4_sock->sock->sk;
 
                rt = vxlan_get_route(vxlan, skb,
                                     rdst ? rdst->remote_ifindex : 0, tos,
-                                    dst->sin.sin_addr.s_addr, &saddr,
+                                    dst->sin.sin_addr.s_addr,
+                                    &src->sin.sin_addr.s_addr,
                                     dst_cache, info);
                if (IS_ERR(rt)) {
                        netdev_dbg(dev, "no route to %pI4\n",
@@ -2017,7 +2019,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
                }
 
                /* Bypass encapsulation if the destination is local */
-               if (rt->rt_flags & RTCF_LOCAL &&
+               if (!info && rt->rt_flags & RTCF_LOCAL &&
                    !(rt->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))) {
                        struct vxlan_dev *dst_vxlan;
 
@@ -2043,13 +2045,12 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
                if (err < 0)
                        goto xmit_tx_error;
 
-               udp_tunnel_xmit_skb(rt, sk, skb, saddr,
+               udp_tunnel_xmit_skb(rt, sk, skb, src->sin.sin_addr.s_addr,
                                    dst->sin.sin_addr.s_addr, tos, ttl, df,
                                    src_port, dst_port, xnet, !udp_sum);
 #if IS_ENABLED(CONFIG_IPV6)
        } else {
                struct dst_entry *ndst;
-               struct in6_addr saddr;
                u32 rt6i_flags;
 
                if (!vxlan->vn6_sock)
@@ -2058,7 +2059,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
 
                ndst = vxlan6_get_route(vxlan, skb,
                                        rdst ? rdst->remote_ifindex : 0, tos,
-                                       label, &dst->sin6.sin6_addr, &saddr,
+                                       label, &dst->sin6.sin6_addr,
+                                       &src->sin6.sin6_addr,
                                        dst_cache, info);
                if (IS_ERR(ndst)) {
                        netdev_dbg(dev, "no route to %pI6\n",
@@ -2077,7 +2079,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
 
                /* Bypass encapsulation if the destination is local */
                rt6i_flags = ((struct rt6_info *)ndst)->rt6i_flags;
-               if (rt6i_flags & RTF_LOCAL &&
+               if (!info && rt6i_flags & RTF_LOCAL &&
                    !(rt6i_flags & (RTCF_BROADCAST | RTCF_MULTICAST))) {
                        struct vxlan_dev *dst_vxlan;
 
@@ -2104,7 +2106,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
                        return;
                }
                udp_tunnel6_xmit_skb(ndst, sk, skb, dev,
-                                    &saddr, &dst->sin6.sin6_addr, tos, ttl,
+                                    &src->sin6.sin6_addr,
+                                    &dst->sin6.sin6_addr, tos, ttl,
                                     label, src_port, dst_port, !udp_sum);
 #endif
        }