This patch allocates the rt6_stats struct dynamically when the fib6 is initialized. That provides the ability to create several instances of this structure for the network namespaces. Signed-off-by: Daniel Lezcano Signed-off-by: Benjamin Thery --- include/net/ipv6.h | 2 +- net/ipv6/ip6_fib.c | 22 +++++++++++++++------- net/ipv6/route.c | 8 ++++---- 3 files changed, 20 insertions(+), 12 deletions(-) Index: net-2.6.25/include/net/ipv6.h =================================================================== --- net-2.6.25.orig/include/net/ipv6.h +++ net-2.6.25/include/net/ipv6.h @@ -604,7 +604,7 @@ extern void ipv6_misc_proc_exit(void); extern int snmp6_register_dev(struct inet6_dev *idev); extern int snmp6_unregister_dev(struct inet6_dev *idev); -extern struct rt6_statistics rt6_stats; +extern struct rt6_statistics *rt6_stats; #else static inline int snmp6_register_dev(struct inet6_dev *idev) { Index: net-2.6.25/net/ipv6/ip6_fib.c =================================================================== --- net-2.6.25.orig/net/ipv6/ip6_fib.c +++ net-2.6.25/net/ipv6/ip6_fib.c @@ -48,7 +48,7 @@ #define RT6_TRACE(x...) do { ; } while (0) #endif -struct rt6_statistics rt6_stats; +struct rt6_statistics *rt6_stats; static struct kmem_cache * fib6_node_kmem __read_mostly; @@ -653,10 +653,10 @@ static int fib6_add_rt2node(struct fib6_ rt->rt6i_node = fn; atomic_inc(&rt->rt6i_ref); inet6_rt_notify(RTM_NEWROUTE, rt, info); - rt6_stats.fib_rt_entries++; + rt6_stats->fib_rt_entries++; if ((fn->fn_flags & RTN_RTINFO) == 0) { - rt6_stats.fib_route_nodes++; + rt6_stats->fib_route_nodes++; fn->fn_flags |= RTN_RTINFO; } @@ -1093,8 +1093,8 @@ static void fib6_del_route(struct fib6_n /* Unlink it */ *rtp = rt->u.dst.rt6_next; rt->rt6i_node = NULL; - rt6_stats.fib_rt_entries--; - rt6_stats.fib_discarded_routes++; + rt6_stats->fib_rt_entries--; + rt6_stats->fib_discarded_routes++; /* Reset round-robin state, if necessary */ if (fn->rr_ptr == rt) @@ -1117,7 +1117,7 @@ static void fib6_del_route(struct fib6_n /* If it was last route, expunge its radix tree node */ if (fn->leaf == NULL) { fn->fn_flags &= ~RTN_RTINFO; - rt6_stats.fib_route_nodes--; + rt6_stats->fib_route_nodes--; fn = fib6_repair_tree(fn); } @@ -1556,9 +1556,14 @@ int __init fib6_init(void) if (!fib6_node_kmem) goto out; + ret = -ENOMEM; + rt6_stats = kzalloc(sizeof(*rt6_stats), GFP_KERNEL); + if (!rt6_stats) + goto out_kmem_cache_create; + ret = register_pernet_subsys(&fib6_net_ops); if (ret) - goto out_kmem_cache_create; + goto out_rt6_stats; ret = __rtnl_register(PF_INET6, RTM_GETROUTE, NULL, inet6_dump_fib); if (ret) @@ -1568,6 +1573,8 @@ out: out_unregister_subsys: unregister_pernet_subsys(&fib6_net_ops); +out_rt6_stats: + kfree(rt6_stats); out_kmem_cache_create: kmem_cache_destroy(fib6_node_kmem); goto out; @@ -1576,5 +1583,6 @@ out_kmem_cache_create: void fib6_gc_cleanup(void) { unregister_pernet_subsys(&fib6_net_ops); + kfree(rt6_stats); kmem_cache_destroy(fib6_node_kmem); } Index: net-2.6.25/net/ipv6/route.c =================================================================== --- net-2.6.25.orig/net/ipv6/route.c +++ net-2.6.25/net/ipv6/route.c @@ -2349,11 +2349,11 @@ static const struct file_operations ipv6 static int rt6_stats_seq_show(struct seq_file *seq, void *v) { seq_printf(seq, "%04x %04x %04x %04x %04x %04x %04x\n", - rt6_stats.fib_nodes, rt6_stats.fib_route_nodes, - rt6_stats.fib_rt_alloc, rt6_stats.fib_rt_entries, - rt6_stats.fib_rt_cache, + rt6_stats->fib_nodes, rt6_stats->fib_route_nodes, + rt6_stats->fib_rt_alloc, rt6_stats->fib_rt_entries, + rt6_stats->fib_rt_cache, atomic_read(&ip6_dst_ops.entries), - rt6_stats.fib_discarded_routes); + rt6_stats->fib_discarded_routes); return 0; } -- -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html