diff options
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_core.c')
-rw-r--r-- | net/netfilter/ipvs/ip_vs_core.c | 73 |
1 files changed, 26 insertions, 47 deletions
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index 2aef23ed748b..f26fe3353a30 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -203,7 +203,7 @@ ip_vs_conn_fill_param_persist(const struct ip_vs_service *svc, { ip_vs_conn_fill_param(svc->net, svc->af, protocol, caddr, cport, vaddr, vport, p); - p->pe = svc->pe; + p->pe = rcu_dereference(svc->pe); if (p->pe && p->pe->fill_param) return p->pe->fill_param(p, skb); @@ -296,12 +296,15 @@ ip_vs_sched_persist(struct ip_vs_service *svc, /* Check if a template already exists */ ct = ip_vs_ct_in_get(¶m); if (!ct || !ip_vs_check_template(ct)) { + struct ip_vs_scheduler *sched; + /* * No template found or the dest of the connection * template is not available. * return *ignored=0 i.e. ICMP and NF_DROP */ - dest = svc->scheduler->schedule(svc, skb); + sched = rcu_dereference(svc->scheduler); + dest = sched->schedule(svc, skb); if (!dest) { IP_VS_DBG(1, "p-schedule: no dest found.\n"); kfree(param.pe_data); @@ -391,6 +394,7 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb, { struct ip_vs_protocol *pp = pd->pp; struct ip_vs_conn *cp = NULL; + struct ip_vs_scheduler *sched; struct ip_vs_dest *dest; __be16 _ports[2], *pptr; unsigned int flags; @@ -446,7 +450,8 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb, return NULL; } - dest = svc->scheduler->schedule(svc, skb); + sched = rcu_dereference(svc->scheduler); + dest = sched->schedule(svc, skb); if (dest == NULL) { IP_VS_DBG(1, "Schedule: no dest found.\n"); return NULL; @@ -504,7 +509,6 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, pptr = frag_safe_skb_hp(skb, iph->len, sizeof(_ports), _ports, iph); if (pptr == NULL) { - ip_vs_service_put(svc); return NF_DROP; } @@ -530,8 +534,6 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, IP_VS_CONN_F_ONE_PACKET : 0; union nf_inet_addr daddr = { .all = { 0, 0, 0, 0 } }; - ip_vs_service_put(svc); - /* create a new connection entry */ IP_VS_DBG(6, "%s(): create a cache_bypass entry\n", __func__); { @@ -568,12 +570,8 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb, * listed in the ipvs table), pass the packets, because it is * not ipvs job to decide to drop the packets. */ - if ((svc->port == FTPPORT) && (pptr[1] != FTPPORT)) { - ip_vs_service_put(svc); + if ((svc->port == FTPPORT) && (pptr[1] != FTPPORT)) return NF_ACCEPT; - } - - ip_vs_service_put(svc); /* * Notify the client that the destination is unreachable, and @@ -640,8 +638,11 @@ static inline enum ip_defrag_users ip_vs_defrag_user(unsigned int hooknum) static inline int ip_vs_gather_frags(struct sk_buff *skb, u_int32_t user) { - int err = ip_defrag(skb, user); + int err; + local_bh_disable(); + err = ip_defrag(skb, user); + local_bh_enable(); if (!err) ip_send_check(ip_hdr(skb)); @@ -1161,9 +1162,8 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af) sizeof(_ports), _ports, &iph); if (pptr == NULL) return NF_ACCEPT; /* Not for me */ - if (ip_vs_lookup_real_service(net, af, iph.protocol, - &iph.saddr, - pptr[0])) { + if (ip_vs_has_real_service(net, af, iph.protocol, &iph.saddr, + pptr[0])) { /* * Notify the real server: there is no * existing entry if it is not RST @@ -1220,13 +1220,7 @@ ip_vs_local_reply4(unsigned int hooknum, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - unsigned int verdict; - - /* Disable BH in LOCAL_OUT until all places are fixed */ - local_bh_disable(); - verdict = ip_vs_out(hooknum, skb, AF_INET); - local_bh_enable(); - return verdict; + return ip_vs_out(hooknum, skb, AF_INET); } #ifdef CONFIG_IP_VS_IPV6 @@ -1253,13 +1247,7 @@ ip_vs_local_reply6(unsigned int hooknum, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - unsigned int verdict; - - /* Disable BH in LOCAL_OUT until all places are fixed */ - local_bh_disable(); - verdict = ip_vs_out(hooknum, skb, AF_INET6); - local_bh_enable(); - return verdict; + return ip_vs_out(hooknum, skb, AF_INET6); } #endif @@ -1395,10 +1383,13 @@ ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum) goto ignore_ipip; /* Prefer the resulting PMTU */ if (dest) { - spin_lock(&dest->dst_lock); - if (dest->dst_cache) - mtu = dst_mtu(dest->dst_cache); - spin_unlock(&dest->dst_lock); + struct ip_vs_dest_dst *dest_dst; + + rcu_read_lock(); + dest_dst = rcu_dereference(dest->dest_dst); + if (dest_dst) + mtu = dst_mtu(dest_dst->dst_cache); + rcu_read_unlock(); } if (mtu > 68 + sizeof(struct iphdr)) mtu -= sizeof(struct iphdr); @@ -1714,13 +1705,7 @@ ip_vs_local_request4(unsigned int hooknum, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - unsigned int verdict; - - /* Disable BH in LOCAL_OUT until all places are fixed */ - local_bh_disable(); - verdict = ip_vs_in(hooknum, skb, AF_INET); - local_bh_enable(); - return verdict; + return ip_vs_in(hooknum, skb, AF_INET); } #ifdef CONFIG_IP_VS_IPV6 @@ -1779,13 +1764,7 @@ ip_vs_local_request6(unsigned int hooknum, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - unsigned int verdict; - - /* Disable BH in LOCAL_OUT until all places are fixed */ - local_bh_disable(); - verdict = ip_vs_in(hooknum, skb, AF_INET6); - local_bh_enable(); - return verdict; + return ip_vs_in(hooknum, skb, AF_INET6); } #endif |