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inet: Create and use rt{,6}_get_peer_create().

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There's a lot of places that open-code rt{,6}_get_peer() only because
they want to set 'create' to one.  So add an rt{,6}_get_peer_create()
for their sake.

There were also a few spots open-coding plain rt{,6}_get_peer() and
those are transformed here as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2012-06-08 23:24:18 -07:00
parent 7123aaa3a1
commit fbfe95a42e
10 changed files with 49 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
net/ipv6/icmp.c
View File

@@ -188,14 +188,14 @@ static inline bool icmpv6_xrlim_allow(struct sock *sk, u8 type,
} else {
struct rt6_info *rt = (struct rt6_info *)dst;
int tmo = net->ipv6.sysctl.icmpv6_time;
struct inet_peer *peer;
/* Give more bandwidth to wider prefixes. */
if (rt->rt6i_dst.plen < 128)
tmo >>= ((128 - rt->rt6i_dst.plen)>>5);
if (!rt->rt6i_peer)
rt6_bind_peer(rt, 1);
res = inet_peer_xrlim_allow(rt->rt6i_peer, tmo);
peer = rt6_get_peer_create(rt);
res = inet_peer_xrlim_allow(peer, tmo);
}
dst_release(dst);
return res;

11
net/ipv6/ip6_output.c
View File

@@ -463,6 +463,7 @@ int ip6_forward(struct sk_buff *skb)
*/
if (skb->dev == dst->dev && opt->srcrt == 0 && !skb_sec_path(skb)) {
struct in6_addr *target = NULL;
struct inet_peer *peer;
struct rt6_info *rt;
/*
@@ -476,13 +477,12 @@ int ip6_forward(struct sk_buff *skb)
else
target = &hdr->daddr;
if (!rt->rt6i_peer)
rt6_bind_peer(rt, 1);
peer = rt6_get_peer_create(rt);
/* Limit redirects both by destination (here)
and by source (inside ndisc_send_redirect)
*/
if (inet_peer_xrlim_allow(rt->rt6i_peer, 1*HZ))
if (inet_peer_xrlim_allow(peer, 1*HZ))
ndisc_send_redirect(skb, target);
} else {
int addrtype = ipv6_addr_type(&hdr->saddr);
@@ -602,11 +602,8 @@ void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
int old, new;
if (rt && !(rt->dst.flags & DST_NOPEER)) {
struct inet_peer *peer;
struct inet_peer *peer = rt6_get_peer_create(rt);
if (!rt->rt6i_peer)
rt6_bind_peer(rt, 1);
peer = rt->rt6i_peer;
if (peer) {
fhdr->identification = htonl(inet_getid(peer, 0));
return;

6
net/ipv6/ndisc.c
View File

@@ -1472,6 +1472,7 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
struct net *net = dev_net(dev);
struct sock *sk = net->ipv6.ndisc_sk;
int len = sizeof(struct icmp6hdr) + 2 * sizeof(struct in6_addr);
struct inet_peer *peer;
struct sk_buff *buff;
struct icmp6hdr *icmph;
struct in6_addr saddr_buf;
@@ -1518,9 +1519,8 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
"Redirect: destination is not a neighbour\n");
goto release;
}
if (!rt->rt6i_peer)
rt6_bind_peer(rt, 1);
if (!inet_peer_xrlim_allow(rt->rt6i_peer, 1*HZ))
peer = rt6_get_peer_create(rt);
if (!inet_peer_xrlim_allow(peer, 1*HZ))
goto release;
if (dev->addr_len) {

5
net/ipv6/route.c
View File

@@ -99,10 +99,7 @@ static u32 *ipv6_cow_metrics(struct dst_entry *dst, unsigned long old)
if (!(rt->dst.flags & DST_HOST))
return NULL;
if (!rt->rt6i_peer)
rt6_bind_peer(rt, 1);
peer = rt->rt6i_peer;
peer = rt6_get_peer_create(rt);
if (peer) {
u32 *old_p = __DST_METRICS_PTR(old);
unsigned long prev, new;

4
net/ipv6/tcp_ipv6.c
View File

@@ -1744,9 +1744,7 @@ static struct inet_peer *tcp_v6_get_peer(struct sock *sk, bool *release_it)
peer = inet_getpeer_v6(net, &np->daddr, 1);
*release_it = true;
} else {
if (!rt->rt6i_peer)
rt6_bind_peer(rt, 1);
peer = rt->rt6i_peer;
peer = rt6_get_peer_create(rt);
*release_it = false;
}