ipv4: remove rt_cache_rebuild_count

After IP route cache removal, rt_cache_rebuild_count is no longer
used.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 0 insertions, 19 deletions

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 406a5226220d..ca447b35b833 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -48,12 +48,6 @@ min_adv_mss - INTEGER
         The advertised MSS depends on the first hop route MTU, but will
         never be lower than this setting.
 
-rt_cache_rebuild_count - INTEGER
-        The per net-namespace route cache emergency rebuild threshold.
-        Any net-namespace having its route cache rebuilt due to
-        a hash bucket chain being too long more than this many times
-        will have its route caching disabled
-
 IP Fragmentation:
 
 ipfrag_high_thresh - INTEGER
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 0ffb8e31f3cd..1474dd65c66f 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -61,8 +61,6 @@ struct netns_ipv4 {
         int sysctl_icmp_ratelimit;
         int sysctl_icmp_ratemask;
         int sysctl_icmp_errors_use_inbound_ifaddr;
-        int sysctl_rt_cache_rebuild_count;
-        int current_rt_cache_rebuild_count;
 
         unsigned int sysctl_ping_group_range[2];
         long sysctl_tcp_mem[3];
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 5840c3255721..4b6487a68279 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -784,13 +784,6 @@ static struct ctl_table ipv4_net_table[] = {
                 .proc_handler   = proc_dointvec
         },
         {
-                .procname       = "rt_cache_rebuild_count",
-                .data           = &init_net.ipv4.sysctl_rt_cache_rebuild_count,
-                .maxlen         = sizeof(int),
-                .mode           = 0644,
-                .proc_handler   = proc_dointvec
-        },
-        {
                 .procname       = "ping_group_range",
                 .data           = &init_net.ipv4.sysctl_ping_group_range,
                 .maxlen         = sizeof(init_net.ipv4.sysctl_ping_group_range),
@@ -829,8 +822,6 @@ static __net_init int ipv4_sysctl_init_net(struct net *net)
                 table[5].data =
                         &net->ipv4.sysctl_icmp_ratemask;
                 table[6].data =
-                        &net->ipv4.sysctl_rt_cache_rebuild_count;
-                table[7].data =
                         &net->ipv4.sysctl_ping_group_range;
 
         }
@@ -842,8 +833,6 @@ static __net_init int ipv4_sysctl_init_net(struct net *net)
         net->ipv4.sysctl_ping_group_range[0] = 1;
         net->ipv4.sysctl_ping_group_range[1] = 0;
 
-        net->ipv4.sysctl_rt_cache_rebuild_count = 4;
-
         tcp_init_mem(net);
 
         net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table);