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Date: Fri, 15 Apr 2011 15:39:53 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: netdev@...r.kernel.org
Subject: [PATCH v5 6/7] ipv4: Kill rt_key_{src,dst} from struct rtable.
They are always used in contexts where they can be reconstituted,
or where the finally resolved rt->rt_{src,dst} is semantically
equivalent.
Signed-off-by: David S. Miller <davem@...emloft.net>
---
include/net/route.h | 4 ----
net/ipv4/ipmr.c | 4 ++--
net/ipv4/route.c | 24 +++++++-----------------
net/ipv4/xfrm4_policy.c | 2 --
4 files changed, 9 insertions(+), 25 deletions(-)
diff --git a/include/net/route.h b/include/net/route.h
index b2a44a9..1337917 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -53,10 +53,6 @@ struct fib_info;
struct rtable {
struct dst_entry dst;
- /* Lookup key. */
- __be32 rt_key_dst;
- __be32 rt_key_src;
-
int rt_genid;
unsigned rt_flags;
__u16 rt_type;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 1f62eae..0441b26 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1791,8 +1791,8 @@ dont_forward:
static struct mr_table *ipmr_rt_fib_lookup(struct net *net, struct rtable *rt)
{
struct flowi4 fl4 = {
- .daddr = rt->rt_key_dst,
- .saddr = rt->rt_key_src,
+ .daddr = rt->rt_dst,
+ .saddr = rt->rt_src,
.flowi4_tos = rt->rt_tos,
.flowi4_oif = rt->rt_oif,
.flowi4_iif = rt->rt_iif,
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b6ad9dc..e9244e0 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -988,8 +988,8 @@ void ip_rt_get_source(u8 *addr, struct rtable *rt)
src = rt->rt_src;
else {
struct flowi4 fl4 = {
- .daddr = rt->rt_key_dst,
- .saddr = rt->rt_key_src,
+ .daddr = rt->rt_dst,
+ .saddr = rt->rt_src,
.flowi4_tos = rt->rt_tos,
.flowi4_oif = rt->rt_oif,
.flowi4_iif = rt->rt_iif,
@@ -1164,8 +1164,6 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
#endif
rth->dst.output = ip_rt_bug;
- rth->rt_key_dst = daddr;
- rth->rt_key_src = saddr;
rth->rt_genid = rt_genid(dev_net(dev));
rth->rt_flags = RTCF_MULTICAST;
rth->rt_type = RTN_MULTICAST;
@@ -1300,8 +1298,6 @@ static int __mkroute_input(struct sk_buff *skb,
goto cleanup;
}
- rth->rt_key_dst = daddr;
- rth->rt_key_src = saddr;
rth->rt_genid = rt_genid(dev_net(rth->dst.dev));
rth->rt_flags = flags;
rth->rt_type = res->type;
@@ -1475,8 +1471,6 @@ local_input:
rth->dst.tclassid = itag;
#endif
- rth->rt_key_dst = daddr;
- rth->rt_key_src = saddr;
rth->rt_genid = rt_genid(net);
rth->rt_flags = flags|RTCF_LOCAL;
rth->rt_type = res.type;
@@ -1644,8 +1638,6 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
rth->dst.output = ip_output;
- rth->rt_key_dst = oldflp4->daddr;
- rth->rt_key_src = oldflp4->saddr;
rth->rt_genid = rt_genid(dev_net(dev_out));
rth->rt_flags = flags;
rth->rt_type = type;
@@ -1922,8 +1914,6 @@ struct dst_entry *ipv4_blackhole_route(struct net *net, struct dst_entry *dst_or
if (new->dev)
dev_hold(new->dev);
- rt->rt_key_dst = ort->rt_key_dst;
- rt->rt_key_src = ort->rt_key_src;
rt->rt_tos = ort->rt_tos;
rt->rt_route_iif = ort->rt_route_iif;
rt->rt_iif = ort->rt_iif;
@@ -1974,7 +1964,7 @@ struct rtable *ip_route_output_flow(struct net *net, struct flowi4 *flp4,
}
EXPORT_SYMBOL_GPL(ip_route_output_flow);
-static int rt_fill_info(struct net *net,
+static int rt_fill_info(struct net *net, __be32 src,
struct sk_buff *skb, u32 pid, u32 seq, int event,
int nowait, unsigned int flags)
{
@@ -2004,9 +1994,9 @@ static int rt_fill_info(struct net *net,
NLA_PUT_BE32(skb, RTA_DST, rt->rt_dst);
- if (rt->rt_key_src) {
+ if (src) {
r->rtm_src_len = 32;
- NLA_PUT_BE32(skb, RTA_SRC, rt->rt_key_src);
+ NLA_PUT_BE32(skb, RTA_SRC, src);
}
if (rt->dst.dev)
NLA_PUT_U32(skb, RTA_OIF, rt->dst.dev->ifindex);
@@ -2016,7 +2006,7 @@ static int rt_fill_info(struct net *net,
#endif
if (rt_is_input_route(rt))
NLA_PUT_BE32(skb, RTA_PREFSRC, rt->rt_spec_dst);
- else if (rt->rt_src != rt->rt_key_src)
+ else if (rt->rt_src != src)
NLA_PUT_BE32(skb, RTA_PREFSRC, rt->rt_src);
if (rt->rt_dst != rt->rt_gateway)
@@ -2155,7 +2145,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
if (rtm->rtm_flags & RTM_F_NOTIFY)
rt->rt_flags |= RTCF_NOTIFY;
- err = rt_fill_info(net, skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq,
+ err = rt_fill_info(net, src, skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq,
RTM_NEWROUTE, 0, 0);
if (err <= 0)
goto errout_free;
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index d20a05e..4a592d0 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -71,8 +71,6 @@ static int xfrm4_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
struct rtable *rt = (struct rtable *)xdst->route;
const struct flowi4 *fl4 = &fl->u.ip4;
- rt->rt_key_dst = fl4->daddr;
- rt->rt_key_src = fl4->saddr;
rt->rt_tos = fl4->flowi4_tos;
rt->rt_route_iif = fl4->flowi4_iif;
rt->rt_iif = fl4->flowi4_iif;
--
1.7.4.3
--
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