diff options
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_proto_sctp.c')
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_proto_sctp.c | 38 |
1 files changed, 16 insertions, 22 deletions
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c index cd1d7298f7ba..86464881cd20 100644 --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c @@ -27,9 +27,10 @@ sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, if (sch == NULL) return 0; net = skb_net(skb); + rcu_read_lock(); if ((sch->type == SCTP_CID_INIT) && - (svc = ip_vs_service_get(net, af, skb->mark, iph->protocol, - &iph->daddr, sh->dest))) { + (svc = ip_vs_service_find(net, af, skb->mark, iph->protocol, + &iph->daddr, sh->dest))) { int ignored; if (ip_vs_todrop(net_ipvs(net))) { @@ -37,7 +38,7 @@ sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, * It seems that we are very loaded. * We have to drop this packet :( */ - ip_vs_service_put(svc); + rcu_read_unlock(); *verdict = NF_DROP; return 0; } @@ -49,14 +50,13 @@ sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, if (!*cpp && ignored <= 0) { if (!ignored) *verdict = ip_vs_leave(svc, skb, pd, iph); - else { - ip_vs_service_put(svc); + else *verdict = NF_DROP; - } + rcu_read_unlock(); return 0; } - ip_vs_service_put(svc); } + rcu_read_unlock(); /* NF_ACCEPT */ return 1; } @@ -208,7 +208,7 @@ enum ipvs_sctp_event_t { IP_VS_SCTP_EVE_LAST }; -static enum ipvs_sctp_event_t sctp_events[255] = { +static enum ipvs_sctp_event_t sctp_events[256] = { IP_VS_SCTP_EVE_DATA_CLI, IP_VS_SCTP_EVE_INIT_CLI, IP_VS_SCTP_EVE_INIT_ACK_CLI, @@ -994,9 +994,9 @@ static void sctp_state_transition(struct ip_vs_conn *cp, int direction, const struct sk_buff *skb, struct ip_vs_proto_data *pd) { - spin_lock(&cp->lock); + spin_lock_bh(&cp->lock); set_sctp_state(pd, cp, direction, skb); - spin_unlock(&cp->lock); + spin_unlock_bh(&cp->lock); } static inline __u16 sctp_app_hashkey(__be16 port) @@ -1016,30 +1016,25 @@ static int sctp_register_app(struct net *net, struct ip_vs_app *inc) hash = sctp_app_hashkey(port); - spin_lock_bh(&ipvs->sctp_app_lock); list_for_each_entry(i, &ipvs->sctp_apps[hash], p_list) { if (i->port == port) { ret = -EEXIST; goto out; } } - list_add(&inc->p_list, &ipvs->sctp_apps[hash]); + list_add_rcu(&inc->p_list, &ipvs->sctp_apps[hash]); atomic_inc(&pd->appcnt); out: - spin_unlock_bh(&ipvs->sctp_app_lock); return ret; } static void sctp_unregister_app(struct net *net, struct ip_vs_app *inc) { - struct netns_ipvs *ipvs = net_ipvs(net); struct ip_vs_proto_data *pd = ip_vs_proto_data_get(net, IPPROTO_SCTP); - spin_lock_bh(&ipvs->sctp_app_lock); atomic_dec(&pd->appcnt); - list_del(&inc->p_list); - spin_unlock_bh(&ipvs->sctp_app_lock); + list_del_rcu(&inc->p_list); } static int sctp_app_conn_bind(struct ip_vs_conn *cp) @@ -1055,12 +1050,12 @@ static int sctp_app_conn_bind(struct ip_vs_conn *cp) /* Lookup application incarnations and bind the right one */ hash = sctp_app_hashkey(cp->vport); - spin_lock(&ipvs->sctp_app_lock); - list_for_each_entry(inc, &ipvs->sctp_apps[hash], p_list) { + rcu_read_lock(); + list_for_each_entry_rcu(inc, &ipvs->sctp_apps[hash], p_list) { if (inc->port == cp->vport) { if (unlikely(!ip_vs_app_inc_get(inc))) break; - spin_unlock(&ipvs->sctp_app_lock); + rcu_read_unlock(); IP_VS_DBG_BUF(9, "%s: Binding conn %s:%u->" "%s:%u to app %s on port %u\n", @@ -1076,7 +1071,7 @@ static int sctp_app_conn_bind(struct ip_vs_conn *cp) goto out; } } - spin_unlock(&ipvs->sctp_app_lock); + rcu_read_unlock(); out: return result; } @@ -1090,7 +1085,6 @@ static int __ip_vs_sctp_init(struct net *net, struct ip_vs_proto_data *pd) struct netns_ipvs *ipvs = net_ipvs(net); ip_vs_init_hash_table(ipvs->sctp_apps, SCTP_APP_TAB_SIZE); - spin_lock_init(&ipvs->sctp_app_lock); pd->timeout_table = ip_vs_create_timeout_table((int *)sctp_timeouts, sizeof(sctp_timeouts)); if (!pd->timeout_table) |