diff options
Diffstat (limited to 'net/ipv4/netfilter/ipt_CLUSTERIP.c')
-rw-r--r-- | net/ipv4/netfilter/ipt_CLUSTERIP.c | 71 |
1 files changed, 35 insertions, 36 deletions
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c index a992dc8..8815d45 100644 --- a/net/ipv4/netfilter/ipt_CLUSTERIP.c +++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c @@ -9,6 +9,7 @@ * published by the Free Software Foundation. * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/proc_fs.h> #include <linux/jhash.h> @@ -239,8 +240,7 @@ clusterip_hashfn(const struct sk_buff *skb, break; default: if (net_ratelimit()) - printk(KERN_NOTICE "CLUSTERIP: unknown protocol `%u'\n", - iph->protocol); + pr_info("unknown protocol %u\n", iph->protocol); sport = dport = 0; } @@ -262,7 +262,7 @@ clusterip_hashfn(const struct sk_buff *skb, hashval = 0; /* This cannot happen, unless the check function wasn't called * at rule load time */ - printk("CLUSTERIP: unknown mode `%u'\n", config->hash_mode); + pr_info("unknown mode %u\n", config->hash_mode); BUG(); break; } @@ -295,7 +295,7 @@ clusterip_tg(struct sk_buff *skb, const struct xt_target_param *par) ct = nf_ct_get(skb, &ctinfo); if (ct == NULL) { - printk(KERN_ERR "CLUSTERIP: no conntrack!\n"); + pr_info("no conntrack!\n"); /* FIXME: need to drop invalid ones, since replies * to outgoing connections of other nodes will be * marked as INVALID */ @@ -348,25 +348,24 @@ clusterip_tg(struct sk_buff *skb, const struct xt_target_param *par) return XT_CONTINUE; } -static bool clusterip_tg_check(const struct xt_tgchk_param *par) +static int clusterip_tg_check(const struct xt_tgchk_param *par) { struct ipt_clusterip_tgt_info *cipinfo = par->targinfo; const struct ipt_entry *e = par->entryinfo; - struct clusterip_config *config; + int ret; if (cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP && cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP_SPT && cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP_SPT_DPT) { - printk(KERN_WARNING "CLUSTERIP: unknown mode `%u'\n", - cipinfo->hash_mode); - return false; + pr_info("unknown mode %u\n", cipinfo->hash_mode); + return -EINVAL; } if (e->ip.dmsk.s_addr != htonl(0xffffffff) || e->ip.dst.s_addr == 0) { - printk(KERN_ERR "CLUSTERIP: Please specify destination IP\n"); - return false; + pr_info("Please specify destination IP\n"); + return -EINVAL; } /* FIXME: further sanity checks */ @@ -374,41 +373,41 @@ static bool clusterip_tg_check(const struct xt_tgchk_param *par) config = clusterip_config_find_get(e->ip.dst.s_addr, 1); if (!config) { if (!(cipinfo->flags & CLUSTERIP_FLAG_NEW)) { - printk(KERN_WARNING "CLUSTERIP: no config found for %pI4, need 'new'\n", &e->ip.dst.s_addr); - return false; + pr_info("no config found for %pI4, need 'new'\n", + &e->ip.dst.s_addr); + return -EINVAL; } else { struct net_device *dev; if (e->ip.iniface[0] == '\0') { - printk(KERN_WARNING "CLUSTERIP: Please specify an interface name\n"); - return false; + pr_info("Please specify an interface name\n"); + return -EINVAL; } dev = dev_get_by_name(&init_net, e->ip.iniface); if (!dev) { - printk(KERN_WARNING "CLUSTERIP: no such interface %s\n", e->ip.iniface); - return false; + pr_info("no such interface %s\n", + e->ip.iniface); + return -ENOENT; } config = clusterip_config_init(cipinfo, e->ip.dst.s_addr, dev); if (!config) { - printk(KERN_WARNING "CLUSTERIP: cannot allocate config\n"); + pr_info("cannot allocate config\n"); dev_put(dev); - return false; + return -ENOMEM; } dev_mc_add(config->dev, config->clustermac); } } cipinfo->config = config; - if (nf_ct_l3proto_try_module_get(par->target->family) < 0) { - printk(KERN_WARNING "can't load conntrack support for " - "proto=%u\n", par->target->family); - return false; - } - - return true; + ret = nf_ct_l3proto_try_module_get(par->family); + if (ret < 0) + pr_info("cannot load conntrack support for proto=%u\n", + par->family); + return ret; } /* drop reference count of cluster config when rule is deleted */ @@ -422,7 +421,7 @@ static void clusterip_tg_destroy(const struct xt_tgdtor_param *par) clusterip_config_put(cipinfo->config); - nf_ct_l3proto_module_put(par->target->family); + nf_ct_l3proto_module_put(par->family); } #ifdef CONFIG_COMPAT @@ -479,8 +478,8 @@ static void arp_print(struct arp_payload *payload) } hbuffer[--k]='\0'; - printk("src %pI4@%s, dst %pI4\n", - &payload->src_ip, hbuffer, &payload->dst_ip); + pr_debug("src %pI4@%s, dst %pI4\n", + &payload->src_ip, hbuffer, &payload->dst_ip); } #endif @@ -519,7 +518,7 @@ arp_mangle(unsigned int hook, * this wouldn't work, since we didn't subscribe the mcast group on * other interfaces */ if (c->dev != out) { - pr_debug("CLUSTERIP: not mangling arp reply on different " + pr_debug("not mangling arp reply on different " "interface: cip'%s'-skb'%s'\n", c->dev->name, out->name); clusterip_config_put(c); @@ -530,7 +529,7 @@ arp_mangle(unsigned int hook, memcpy(payload->src_hw, c->clustermac, arp->ar_hln); #ifdef DEBUG - pr_debug(KERN_DEBUG "CLUSTERIP mangled arp reply: "); + pr_debug("mangled arp reply: "); arp_print(payload); #endif @@ -601,7 +600,8 @@ static void *clusterip_seq_next(struct seq_file *s, void *v, loff_t *pos) static void clusterip_seq_stop(struct seq_file *s, void *v) { - kfree(v); + if (!IS_ERR(v)) + kfree(v); } static int clusterip_seq_show(struct seq_file *s, void *v) @@ -706,13 +706,13 @@ static int __init clusterip_tg_init(void) #ifdef CONFIG_PROC_FS clusterip_procdir = proc_mkdir("ipt_CLUSTERIP", init_net.proc_net); if (!clusterip_procdir) { - printk(KERN_ERR "CLUSTERIP: Unable to proc dir entry\n"); + pr_err("Unable to proc dir entry\n"); ret = -ENOMEM; goto cleanup_hook; } #endif /* CONFIG_PROC_FS */ - printk(KERN_NOTICE "ClusterIP Version %s loaded successfully\n", + pr_info("ClusterIP Version %s loaded successfully\n", CLUSTERIP_VERSION); return 0; @@ -727,8 +727,7 @@ cleanup_target: static void __exit clusterip_tg_exit(void) { - printk(KERN_NOTICE "ClusterIP Version %s unloading\n", - CLUSTERIP_VERSION); + pr_info("ClusterIP Version %s unloading\n", CLUSTERIP_VERSION); #ifdef CONFIG_PROC_FS remove_proc_entry(clusterip_procdir->name, clusterip_procdir->parent); #endif |