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authorEric Dumazet <edumazet@google.com>2017-09-20 01:27:09 +0200
committerDavid S. Miller <davem@davemloft.net>2017-09-20 01:32:24 +0200
commit64bc17811b72758753e2b64cd8f2a63812c61fe1 (patch)
tree484826d20103aa296586883918c1ba6a3e74ef0b /include/net/ip_tunnels.h
parentipv6: speedup ipv6 tunnels dismantle (diff)
downloadlinux-64bc17811b72758753e2b64cd8f2a63812c61fe1.tar.xz
linux-64bc17811b72758753e2b64cd8f2a63812c61fe1.zip
ipv4: speedup ipv6 tunnels dismantle
Implement exit_batch() method to dismantle more devices per round. (rtnl_lock() ... unregister_netdevice_many() ... rtnl_unlock()) Tested: $ cat add_del_unshare.sh for i in `seq 1 40` do (for j in `seq 1 100` ; do unshare -n /bin/true >/dev/null ; done) & done wait ; grep net_namespace /proc/slabinfo Before patch : $ time ./add_del_unshare.sh net_namespace 126 282 5504 1 2 : tunables 8 4 0 : slabdata 126 282 0 real 1m38.965s user 0m0.688s sys 0m37.017s After patch: $ time ./add_del_unshare.sh net_namespace 135 291 5504 1 2 : tunables 8 4 0 : slabdata 135 291 0 real 0m22.117s user 0m0.728s sys 0m35.328s Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/ip_tunnels.h')
-rw-r--r--include/net/ip_tunnels.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index 992652856fe8..b41a1e057fce 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -258,7 +258,8 @@ int ip_tunnel_get_iflink(const struct net_device *dev);
int ip_tunnel_init_net(struct net *net, unsigned int ip_tnl_net_id,
struct rtnl_link_ops *ops, char *devname);
-void ip_tunnel_delete_net(struct ip_tunnel_net *itn, struct rtnl_link_ops *ops);
+void ip_tunnel_delete_nets(struct list_head *list_net, unsigned int id,
+ struct rtnl_link_ops *ops);
void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
const struct iphdr *tnl_params, const u8 protocol);