route: Remove redirect_genid
As we invalidate the inetpeer tree along with the routing cache now,
we don't need a genid to reset the redirect handling when the routing
cache is flushed.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index ff04a33..b94765e 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -35,7 +35,6 @@
u32 metrics[RTAX_MAX];
u32 rate_tokens; /* rate limiting for ICMP */
- int redirect_genid;
unsigned long rate_last;
unsigned long pmtu_expires;
u32 pmtu_orig;
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index deea2e9..d4d61b6 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -498,7 +498,6 @@
p->rate_last = 0;
p->pmtu_expires = 0;
p->pmtu_orig = 0;
- p->redirect_genid = 0;
memset(&p->redirect_learned, 0, sizeof(p->redirect_learned));
INIT_LIST_HEAD(&p->gc_list);
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 23ce0c1..0197747 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -132,7 +132,6 @@
static int ip_rt_min_pmtu __read_mostly = 512 + 20 + 20;
static int ip_rt_min_advmss __read_mostly = 256;
static int rt_chain_length_max __read_mostly = 20;
-static int redirect_genid;
static struct delayed_work expires_work;
static unsigned long expires_ljiffies;
@@ -937,7 +936,6 @@
get_random_bytes(&shuffle, sizeof(shuffle));
atomic_add(shuffle + 1U, &net->ipv4.rt_genid);
- redirect_genid++;
inetpeer_invalidate_tree(AF_INET);
}
@@ -1486,10 +1484,8 @@
peer = rt->peer;
if (peer) {
- if (peer->redirect_learned.a4 != new_gw ||
- peer->redirect_genid != redirect_genid) {
+ if (peer->redirect_learned.a4 != new_gw) {
peer->redirect_learned.a4 = new_gw;
- peer->redirect_genid = redirect_genid;
atomic_inc(&__rt_peer_genid);
}
check_peer_redir(&rt->dst, peer);
@@ -1794,8 +1790,6 @@
if (peer) {
check_peer_pmtu(&rt->dst, peer);
- if (peer->redirect_genid != redirect_genid)
- peer->redirect_learned.a4 = 0;
if (peer->redirect_learned.a4 &&
peer->redirect_learned.a4 != rt->rt_gateway)
check_peer_redir(&rt->dst, peer);
@@ -1959,8 +1953,7 @@
dst_init_metrics(&rt->dst, peer->metrics, false);
check_peer_pmtu(&rt->dst, peer);
- if (peer->redirect_genid != redirect_genid)
- peer->redirect_learned.a4 = 0;
+
if (peer->redirect_learned.a4 &&
peer->redirect_learned.a4 != rt->rt_gateway) {
rt->rt_gateway = peer->redirect_learned.a4;