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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-10-28 05:21:38 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-10-29 01:13:49 -0700 |
| commit | d17fa6fa81d9be6d2dc69aedfabecf904210cbf4 (patch) | |
| tree | 36513dfe8637c6ef87d2837948c7f64ad2b96d8f | |
| parent | cf4432f550a0fe4e08e7cd522568cfbae754582c (diff) | |
| download | linux-d17fa6fa81d9be6d2dc69aedfabecf904210cbf4.tar.bz2 | |
ipmr: Optimize multiple unregistration
Speedup module unloading by factorizing synchronize_rcu() calls
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/ipmr.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 694974502ea6..ef4ee45b928f 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -275,7 +275,8 @@ failure: * @notify: Set to 1, if the caller is a notifier_call */ -static int vif_delete(struct net *net, int vifi, int notify) +static int vif_delete(struct net *net, int vifi, int notify, + struct list_head *head) { struct vif_device *v; struct net_device *dev; @@ -319,7 +320,7 @@ static int vif_delete(struct net *net, int vifi, int notify) } if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER) && !notify) - unregister_netdevice(dev); + unregister_netdevice_queue(dev, head); dev_put(dev); return 0; @@ -870,14 +871,16 @@ static int ipmr_mfc_add(struct net *net, struct mfcctl *mfc, int mrtsock) static void mroute_clean_tables(struct net *net) { int i; + LIST_HEAD(list); /* * Shut down all active vif entries */ for (i = 0; i < net->ipv4.maxvif; i++) { if (!(net->ipv4.vif_table[i].flags&VIFF_STATIC)) - vif_delete(net, i, 0); + vif_delete(net, i, 0, &list); } + unregister_netdevice_many(&list); /* * Wipe the cache @@ -993,7 +996,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, unsi if (optname == MRT_ADD_VIF) { ret = vif_add(net, &vif, sk == net->ipv4.mroute_sk); } else { - ret = vif_delete(net, vif.vifc_vifi, 0); + ret = vif_delete(net, vif.vifc_vifi, 0, NULL); } rtnl_unlock(); return ret; @@ -1156,6 +1159,7 @@ static int ipmr_device_event(struct notifier_block *this, unsigned long event, v struct net *net = dev_net(dev); struct vif_device *v; int ct; + LIST_HEAD(list); if (!net_eq(dev_net(dev), net)) return NOTIFY_DONE; @@ -1165,8 +1169,9 @@ static int ipmr_device_event(struct notifier_block *this, unsigned long event, v v = &net->ipv4.vif_table[0]; for (ct = 0; ct < net->ipv4.maxvif; ct++, v++) { if (v->dev == dev) - vif_delete(net, ct, 1); + vif_delete(net, ct, 1, &list); } + unregister_netdevice_many(&list); return NOTIFY_DONE; } |