[Devel] [PATCH RHEL7 COMMIT] vzprivnet: Flush rt cache each time rules change

[Konstantin Khorenko]

The commit is pushed to "branch-rh7-3.10.0-327.10.1.vz7.12.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-327.10.1.vz7.12.3
------>
commit 4b0fc16e0250d08b4378be091deef2ba67e57117
Author: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
Date:   Thu Mar 24 19:53:31 2016 +0400

    vzprivnet: Flush rt cache each time rules change
    
    changes:
    1) fix rt_cache_flush arguments
    Below commit removes arg delay from rt_cache_flush:
    commit bafa6d9d8907 ("ipv4/route: arg delay is useless in
    rt_cache_flush()")
    
    Port diff-vz-privnet-flush-rtcache
      vzprivnet: Flush rt cache each time rules change
    
      Required to make old dst entries disappear.
    
      Signed-off-by: Pavel Emelyanov <xemul at parallels.com>
    
    Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
---
 net/ipv4/netfilter/ip_vzprivnet.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/ipv4/netfilter/ip_vzprivnet.c b/net/ipv4/netfilter/ip_vzprivnet.c
index 0142fc3..170b0c5 100644
--- a/net/ipv4/netfilter/ip_vzprivnet.c
+++ b/net/ipv4/netfilter/ip_vzprivnet.c
@@ -28,6 +28,7 @@
 #include <linux/log2.h>
 #include <linux/ctype.h>
 #include <linux/inet.h>
+#include <net/route.h>
 #include <asm/page.h>
 
 #define VZPRIV_PROCNAME "ip_vzprivnet"
@@ -423,6 +424,8 @@ static ssize_t vzpriv_write(struct file * file, const char __user *buf,
 	if (err)
 		goto err;
 
+	rt_cache_flush(&init_net);
+
 	s = page;
 	s[count] = 0;
 
@@ -742,6 +745,8 @@ static ssize_t sparse_write(struct file * file, const char __user *buf,
 	if (err)
 		goto err;
 
+	rt_cache_flush(&init_net);
+
 	s = page;
 	s[count] = 0;