From a1ff4ac84e58503691058e88d55fa48949822683 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Wed, 15 Apr 2009 21:28:39 +0200 Subject: [PATCH] netfilter: xtables: reduce indent level by one Cosmetic only. Transformation applied: -if (foo) { long block; } else { short block; } +if (!foo) { short block; continue; } long block; Signed-off-by: Jan Engelhardt --- net/ipv4/netfilter/arp_tables.c | 100 ++++++++++++------------ net/ipv4/netfilter/ip_tables.c | 134 ++++++++++++++++---------------- net/ipv6/netfilter/ip6_tables.c | 132 +++++++++++++++---------------- 3 files changed, 177 insertions(+), 189 deletions(-) diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c index 940e54ba21b3..ecba246dc2a7 100644 --- a/net/ipv4/netfilter/arp_tables.c +++ b/net/ipv4/netfilter/arp_tables.c @@ -273,66 +273,62 @@ unsigned int arpt_do_table(struct sk_buff *skb, arp = arp_hdr(skb); do { - if (arp_packet_match(arp, skb->dev, indev, outdev, &e->arp)) { - struct arpt_entry_target *t; - int hdr_len; + struct arpt_entry_target *t; + int hdr_len; - hdr_len = sizeof(*arp) + (2 * sizeof(struct in_addr)) + - (2 * skb->dev->addr_len); + if (!arp_packet_match(arp, skb->dev, indev, outdev, &e->arp)) { + e = arpt_next_entry(e); + continue; + } - ADD_COUNTER(e->counters, hdr_len, 1); + hdr_len = sizeof(*arp) + (2 * sizeof(struct in_addr)) + + (2 * skb->dev->addr_len); + ADD_COUNTER(e->counters, hdr_len, 1); - t = arpt_get_target(e); + t = arpt_get_target(e); - /* Standard target? */ - if (!t->u.kernel.target->target) { - int v; + /* Standard target? */ + if (!t->u.kernel.target->target) { + int v; - v = ((struct arpt_standard_target *)t)->verdict; - if (v < 0) { - /* Pop from stack? */ - if (v != ARPT_RETURN) { - verdict = (unsigned)(-v) - 1; - break; - } - e = back; - back = get_entry(table_base, - back->comefrom); - continue; - } - if (table_base + v - != arpt_next_entry(e)) { - /* Save old back ptr in next entry */ - struct arpt_entry *next - = arpt_next_entry(e); - next->comefrom = - (void *)back - table_base; - - /* set back pointer to next entry */ - back = next; - } - - e = get_entry(table_base, v); - } else { - /* Targets which reenter must return - * abs. verdicts - */ - tgpar.target = t->u.kernel.target; - tgpar.targinfo = t->data; - verdict = t->u.kernel.target->target(skb, - &tgpar); - - /* Target might have changed stuff. */ - arp = arp_hdr(skb); - - if (verdict == ARPT_CONTINUE) - e = arpt_next_entry(e); - else - /* Verdict */ + v = ((struct arpt_standard_target *)t)->verdict; + if (v < 0) { + /* Pop from stack? */ + if (v != ARPT_RETURN) { + verdict = (unsigned)(-v) - 1; break; + } + e = back; + back = get_entry(table_base, back->comefrom); + continue; } + if (table_base + v + != arpt_next_entry(e)) { + /* Save old back ptr in next entry */ + struct arpt_entry *next = arpt_next_entry(e); + next->comefrom = (void *)back - table_base; + + /* set back pointer to next entry */ + back = next; + } + + e = get_entry(table_base, v); } else { - e = arpt_next_entry(e); + /* Targets which reenter must return + * abs. verdicts + */ + tgpar.target = t->u.kernel.target; + tgpar.targinfo = t->data; + verdict = t->u.kernel.target->target(skb, &tgpar); + + /* Target might have changed stuff. */ + arp = arp_hdr(skb); + + if (verdict == ARPT_CONTINUE) + e = arpt_next_entry(e); + else + /* Verdict */ + break; } } while (!hotdrop); xt_info_rdunlock_bh(); diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c index 7ec4e4092755..82888bc6bc1a 100644 --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c @@ -354,91 +354,87 @@ ipt_do_table(struct sk_buff *skb, back = get_entry(table_base, private->underflow[hook]); do { + struct ipt_entry_target *t; + IP_NF_ASSERT(e); IP_NF_ASSERT(back); - if (ip_packet_match(ip, indev, outdev, + if (!ip_packet_match(ip, indev, outdev, &e->ip, mtpar.fragoff)) { - struct ipt_entry_target *t; + no_match: + e = ipt_next_entry(e); + continue; + } - if (IPT_MATCH_ITERATE(e, do_match, skb, &mtpar) != 0) - goto no_match; + if (IPT_MATCH_ITERATE(e, do_match, skb, &mtpar) != 0) + goto no_match; - ADD_COUNTER(e->counters, ntohs(ip->tot_len), 1); + ADD_COUNTER(e->counters, ntohs(ip->tot_len), 1); - t = ipt_get_target(e); - IP_NF_ASSERT(t->u.kernel.target); + t = ipt_get_target(e); + IP_NF_ASSERT(t->u.kernel.target); #if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \ defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE) - /* The packet is traced: log it */ - if (unlikely(skb->nf_trace)) - trace_packet(skb, hook, in, out, - table->name, private, e); + /* The packet is traced: log it */ + if (unlikely(skb->nf_trace)) + trace_packet(skb, hook, in, out, + table->name, private, e); #endif - /* Standard target? */ - if (!t->u.kernel.target->target) { - int v; - - v = ((struct ipt_standard_target *)t)->verdict; - if (v < 0) { - /* Pop from stack? */ - if (v != IPT_RETURN) { - verdict = (unsigned)(-v) - 1; - break; - } - e = back; - back = get_entry(table_base, - back->comefrom); - continue; - } - if (table_base + v != ipt_next_entry(e) - && !(e->ip.flags & IPT_F_GOTO)) { - /* Save old back ptr in next entry */ - struct ipt_entry *next - = ipt_next_entry(e); - next->comefrom - = (void *)back - table_base; - /* set back pointer to next entry */ - back = next; + /* Standard target? */ + if (!t->u.kernel.target->target) { + int v; + + v = ((struct ipt_standard_target *)t)->verdict; + if (v < 0) { + /* Pop from stack? */ + if (v != IPT_RETURN) { + verdict = (unsigned)(-v) - 1; + break; } + e = back; + back = get_entry(table_base, back->comefrom); + continue; + } + if (table_base + v != ipt_next_entry(e) + && !(e->ip.flags & IPT_F_GOTO)) { + /* Save old back ptr in next entry */ + struct ipt_entry *next = ipt_next_entry(e); + next->comefrom = (void *)back - table_base; + /* set back pointer to next entry */ + back = next; + } - e = get_entry(table_base, v); - } else { - /* Targets which reenter must return - abs. verdicts */ - tgpar.target = t->u.kernel.target; - tgpar.targinfo = t->data; + e = get_entry(table_base, v); + } else { + /* Targets which reenter must return + abs. verdicts */ + tgpar.target = t->u.kernel.target; + tgpar.targinfo = t->data; #ifdef CONFIG_NETFILTER_DEBUG - ((struct ipt_entry *)table_base)->comefrom - = 0xeeeeeeec; + ((struct ipt_entry *)table_base)->comefrom + = 0xeeeeeeec; #endif - verdict = t->u.kernel.target->target(skb, - &tgpar); + verdict = t->u.kernel.target->target(skb, &tgpar); #ifdef CONFIG_NETFILTER_DEBUG - if (((struct ipt_entry *)table_base)->comefrom - != 0xeeeeeeec - && verdict == IPT_CONTINUE) { - printk("Target %s reentered!\n", - t->u.kernel.target->name); - verdict = NF_DROP; - } - ((struct ipt_entry *)table_base)->comefrom - = 0x57acc001; -#endif - /* Target might have changed stuff. */ - ip = ip_hdr(skb); - datalen = skb->len - ip->ihl * 4; - - if (verdict == IPT_CONTINUE) - e = ipt_next_entry(e); - else - /* Verdict */ - break; + if (((struct ipt_entry *)table_base)->comefrom + != 0xeeeeeeec + && verdict == IPT_CONTINUE) { + printk("Target %s reentered!\n", + t->u.kernel.target->name); + verdict = NF_DROP; } - } else { - - no_match: - e = ipt_next_entry(e); + ((struct ipt_entry *)table_base)->comefrom + = 0x57acc001; +#endif + /* Target might have changed stuff. */ + ip = ip_hdr(skb); + datalen = skb->len - ip->ihl * 4; + + if (verdict == IPT_CONTINUE) + e = ipt_next_entry(e); + else + /* Verdict */ + break; } } while (!hotdrop); xt_info_rdunlock_bh(); diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index 9176e98ace7a..a6c2213f821e 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -381,91 +381,87 @@ ip6t_do_table(struct sk_buff *skb, back = get_entry(table_base, private->underflow[hook]); do { + struct ip6t_entry_target *t; + IP_NF_ASSERT(e); IP_NF_ASSERT(back); - if (ip6_packet_match(skb, indev, outdev, &e->ipv6, - &mtpar.thoff, &mtpar.fragoff, &hotdrop)) { - struct ip6t_entry_target *t; + if (!ip6_packet_match(skb, indev, outdev, &e->ipv6, + &mtpar.thoff, &mtpar.fragoff, &hotdrop)) { + no_match: + e = ip6t_next_entry(e); + continue; + } - if (IP6T_MATCH_ITERATE(e, do_match, skb, &mtpar) != 0) - goto no_match; + if (IP6T_MATCH_ITERATE(e, do_match, skb, &mtpar) != 0) + goto no_match; - ADD_COUNTER(e->counters, - ntohs(ipv6_hdr(skb)->payload_len) + - sizeof(struct ipv6hdr), 1); + ADD_COUNTER(e->counters, + ntohs(ipv6_hdr(skb)->payload_len) + + sizeof(struct ipv6hdr), 1); - t = ip6t_get_target(e); - IP_NF_ASSERT(t->u.kernel.target); + t = ip6t_get_target(e); + IP_NF_ASSERT(t->u.kernel.target); #if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \ defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE) - /* The packet is traced: log it */ - if (unlikely(skb->nf_trace)) - trace_packet(skb, hook, in, out, - table->name, private, e); + /* The packet is traced: log it */ + if (unlikely(skb->nf_trace)) + trace_packet(skb, hook, in, out, + table->name, private, e); #endif - /* Standard target? */ - if (!t->u.kernel.target->target) { - int v; - - v = ((struct ip6t_standard_target *)t)->verdict; - if (v < 0) { - /* Pop from stack? */ - if (v != IP6T_RETURN) { - verdict = (unsigned)(-v) - 1; - break; - } - e = back; - back = get_entry(table_base, - back->comefrom); - continue; - } - if (table_base + v != ip6t_next_entry(e) - && !(e->ipv6.flags & IP6T_F_GOTO)) { - /* Save old back ptr in next entry */ - struct ip6t_entry *next - = ip6t_next_entry(e); - next->comefrom - = (void *)back - table_base; - /* set back pointer to next entry */ - back = next; + /* Standard target? */ + if (!t->u.kernel.target->target) { + int v; + + v = ((struct ip6t_standard_target *)t)->verdict; + if (v < 0) { + /* Pop from stack? */ + if (v != IP6T_RETURN) { + verdict = (unsigned)(-v) - 1; + break; } + e = back; + back = get_entry(table_base, back->comefrom); + continue; + } + if (table_base + v != ip6t_next_entry(e) + && !(e->ipv6.flags & IP6T_F_GOTO)) { + /* Save old back ptr in next entry */ + struct ip6t_entry *next = ip6t_next_entry(e); + next->comefrom = (void *)back - table_base; + /* set back pointer to next entry */ + back = next; + } - e = get_entry(table_base, v); - } else { - /* Targets which reenter must return - abs. verdicts */ - tgpar.target = t->u.kernel.target; - tgpar.targinfo = t->data; + e = get_entry(table_base, v); + } else { + /* Targets which reenter must return + abs. verdicts */ + tgpar.target = t->u.kernel.target; + tgpar.targinfo = t->data; #ifdef CONFIG_NETFILTER_DEBUG - ((struct ip6t_entry *)table_base)->comefrom - = 0xeeeeeeec; + ((struct ip6t_entry *)table_base)->comefrom + = 0xeeeeeeec; #endif - verdict = t->u.kernel.target->target(skb, - &tgpar); + verdict = t->u.kernel.target->target(skb, &tgpar); #ifdef CONFIG_NETFILTER_DEBUG - if (((struct ip6t_entry *)table_base)->comefrom - != 0xeeeeeeec - && verdict == IP6T_CONTINUE) { - printk("Target %s reentered!\n", - t->u.kernel.target->name); - verdict = NF_DROP; - } - ((struct ip6t_entry *)table_base)->comefrom - = 0x57acc001; -#endif - if (verdict == IP6T_CONTINUE) - e = ip6t_next_entry(e); - else - /* Verdict */ - break; + if (((struct ip6t_entry *)table_base)->comefrom + != 0xeeeeeeec + && verdict == IP6T_CONTINUE) { + printk("Target %s reentered!\n", + t->u.kernel.target->name); + verdict = NF_DROP; } - } else { - - no_match: - e = ip6t_next_entry(e); + ((struct ip6t_entry *)table_base)->comefrom + = 0x57acc001; +#endif + if (verdict == IP6T_CONTINUE) + e = ip6t_next_entry(e); + else + /* Verdict */ + break; } } while (!hotdrop); -- 2.34.1