Merge remote-tracking branch 'net-next/master' into mac80211-next

Resolve the merge conflict between Felix's/my and Toke's patches
coming into the tree through net and mac80211-next respectively.
Most of Felix's changes go away due to Toke's new infrastructure
work, my patch changes to "goto begin" (the label wasn't there
before) instead of returning NULL so flow control towards drivers
is preserved better.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 94 insertions, 0 deletions

diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
index b5f9511d819e..b4e990743e1d 100644
--- a/drivers/net/ipvlan/ipvlan_core.c
+++ b/drivers/net/ipvlan/ipvlan_core.c
@@ -560,6 +560,7 @@ int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev)
 	case IPVLAN_MODE_L2:
 		return ipvlan_xmit_mode_l2(skb, dev);
 	case IPVLAN_MODE_L3:
+	case IPVLAN_MODE_L3S:
 		return ipvlan_xmit_mode_l3(skb, dev);
 	}
 
@@ -664,6 +665,8 @@ rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb)
 		return ipvlan_handle_mode_l2(pskb, port);
 	case IPVLAN_MODE_L3:
 		return ipvlan_handle_mode_l3(pskb, port);
+	case IPVLAN_MODE_L3S:
+		return RX_HANDLER_PASS;
 	}
 
 	/* Should not reach here */
@@ -672,3 +675,94 @@ rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb)
 	kfree_skb(skb);
 	return RX_HANDLER_CONSUMED;
 }
+
+static struct ipvl_addr *ipvlan_skb_to_addr(struct sk_buff *skb,
+					    struct net_device *dev)
+{
+	struct ipvl_addr *addr = NULL;
+	struct ipvl_port *port;
+	void *lyr3h;
+	int addr_type;
+
+	if (!dev || !netif_is_ipvlan_port(dev))
+		goto out;
+
+	port = ipvlan_port_get_rcu(dev);
+	if (!port || port->mode != IPVLAN_MODE_L3S)
+		goto out;
+
+	lyr3h = ipvlan_get_L3_hdr(skb, &addr_type);
+	if (!lyr3h)
+		goto out;
+
+	addr = ipvlan_addr_lookup(port, lyr3h, addr_type, true);
+out:
+	return addr;
+}
+
+struct sk_buff *ipvlan_l3_rcv(struct net_device *dev, struct sk_buff *skb,
+			      u16 proto)
+{
+	struct ipvl_addr *addr;
+	struct net_device *sdev;
+
+	addr = ipvlan_skb_to_addr(skb, dev);
+	if (!addr)
+		goto out;
+
+	sdev = addr->master->dev;
+	switch (proto) {
+	case AF_INET:
+	{
+		int err;
+		struct iphdr *ip4h = ip_hdr(skb);
+
+		err = ip_route_input_noref(skb, ip4h->daddr, ip4h->saddr,
+					   ip4h->tos, sdev);
+		if (unlikely(err))
+			goto out;
+		break;
+	}
+	case AF_INET6:
+	{
+		struct dst_entry *dst;
+		struct ipv6hdr *ip6h = ipv6_hdr(skb);
+		int flags = RT6_LOOKUP_F_HAS_SADDR;
+		struct flowi6 fl6 = {
+			.flowi6_iif   = sdev->ifindex,
+			.daddr        = ip6h->daddr,
+			.saddr        = ip6h->saddr,
+			.flowlabel    = ip6_flowinfo(ip6h),
+			.flowi6_mark  = skb->mark,
+			.flowi6_proto = ip6h->nexthdr,
+		};
+
+		skb_dst_drop(skb);
+		dst = ip6_route_input_lookup(dev_net(sdev), sdev, &fl6, flags);
+		skb_dst_set(skb, dst);
+		break;
+	}
+	default:
+		break;
+	}
+
+out:
+	return skb;
+}
+
+unsigned int ipvlan_nf_input(void *priv, struct sk_buff *skb,
+			     const struct nf_hook_state *state)
+{
+	struct ipvl_addr *addr;
+	unsigned int len;
+
+	addr = ipvlan_skb_to_addr(skb, skb->dev);
+	if (!addr)
+		goto out;
+
+	skb->dev = addr->master->dev;
+	len = skb->len + ETH_HLEN;
+	ipvlan_count_rx(addr->master, len, true, false);
+out:
+	return NF_ACCEPT;
+}