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authorDavid S. Miller <davem@davemloft.net>2011-03-12 00:00:52 -0500
committerDavid S. Miller <davem@davemloft.net>2011-03-12 15:08:42 -0800
commit78fbfd8a653ca972afe479517a40661bfff6d8c3 (patch)
tree9dccc5c16bf269d53d8499064ec95a998e84c646 /net/ipv4/ip_gre.c
parent1561747ddf9d28185548687b11aae7074d6129c4 (diff)
downloadop-kernel-dev-78fbfd8a653ca972afe479517a40661bfff6d8c3.zip
op-kernel-dev-78fbfd8a653ca972afe479517a40661bfff6d8c3.tar.gz
ipv4: Create and use route lookup helpers.
The idea here is this minimizes the number of places one has to edit in order to make changes to how flows are defined and used. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_gre.c')
-rw-r--r--net/ipv4/ip_gre.c49
1 files changed, 17 insertions, 32 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 71465955..da5941f 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -769,20 +769,12 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
tos = ipv6_get_dsfield((struct ipv6hdr *)old_iph);
}
- {
- struct flowi fl = {
- .oif = tunnel->parms.link,
- .fl4_dst = dst,
- .fl4_src = tiph->saddr,
- .fl4_tos = RT_TOS(tos),
- .proto = IPPROTO_GRE,
- .fl_gre_key = tunnel->parms.o_key
- };
- rt = ip_route_output_key(dev_net(dev), &fl);
- if (IS_ERR(rt)) {
- dev->stats.tx_carrier_errors++;
- goto tx_error;
- }
+ rt = ip_route_output_gre(dev_net(dev), dst, tiph->saddr,
+ tunnel->parms.o_key, RT_TOS(tos),
+ tunnel->parms.link);
+ if (IS_ERR(rt)) {
+ dev->stats.tx_carrier_errors++;
+ goto tx_error;
}
tdev = rt->dst.dev;
@@ -946,15 +938,11 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev)
/* Guess output device to choose reasonable mtu and needed_headroom */
if (iph->daddr) {
- struct flowi fl = {
- .oif = tunnel->parms.link,
- .fl4_dst = iph->daddr,
- .fl4_src = iph->saddr,
- .fl4_tos = RT_TOS(iph->tos),
- .proto = IPPROTO_GRE,
- .fl_gre_key = tunnel->parms.o_key
- };
- struct rtable *rt = ip_route_output_key(dev_net(dev), &fl);
+ struct rtable *rt = ip_route_output_gre(dev_net(dev),
+ iph->daddr, iph->saddr,
+ tunnel->parms.o_key,
+ RT_TOS(iph->tos),
+ tunnel->parms.link);
if (!IS_ERR(rt)) {
tdev = rt->dst.dev;
@@ -1208,15 +1196,12 @@ static int ipgre_open(struct net_device *dev)
struct ip_tunnel *t = netdev_priv(dev);
if (ipv4_is_multicast(t->parms.iph.daddr)) {
- struct flowi fl = {
- .oif = t->parms.link,
- .fl4_dst = t->parms.iph.daddr,
- .fl4_src = t->parms.iph.saddr,
- .fl4_tos = RT_TOS(t->parms.iph.tos),
- .proto = IPPROTO_GRE,
- .fl_gre_key = t->parms.o_key
- };
- struct rtable *rt = ip_route_output_key(dev_net(dev), &fl);
+ struct rtable *rt = ip_route_output_gre(dev_net(dev),
+ t->parms.iph.daddr,
+ t->parms.iph.saddr,
+ t->parms.o_key,
+ RT_TOS(t->parms.iph.tos),
+ t->parms.link);
if (IS_ERR(rt))
return -EADDRNOTAVAIL;
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