diff options
Diffstat (limited to 'target/linux/generic/patches-2.6.35/110-netfilter_match_speedup.patch')
-rw-r--r-- | target/linux/generic/patches-2.6.35/110-netfilter_match_speedup.patch | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/target/linux/generic/patches-2.6.35/110-netfilter_match_speedup.patch b/target/linux/generic/patches-2.6.35/110-netfilter_match_speedup.patch deleted file mode 100644 index 7affbb1221..0000000000 --- a/target/linux/generic/patches-2.6.35/110-netfilter_match_speedup.patch +++ /dev/null @@ -1,149 +0,0 @@ ---- a/include/linux/netfilter_ipv4/ip_tables.h -+++ b/include/linux/netfilter_ipv4/ip_tables.h -@@ -62,6 +62,7 @@ struct ipt_ip { - #define IPT_F_FRAG 0x01 /* Set if rule is a fragment rule */ - #define IPT_F_GOTO 0x02 /* Set if jump is a goto */ - #define IPT_F_MASK 0x03 /* All possible flag bits mask. */ -+#define IPT_F_NO_DEF_MATCH 0x80 /* Internal: no default match rules present */ - - /* Values for "inv" field in struct ipt_ip. */ - #define IPT_INV_VIA_IN 0x01 /* Invert the sense of IN IFACE. */ ---- a/net/ipv4/netfilter/ip_tables.c -+++ b/net/ipv4/netfilter/ip_tables.c -@@ -90,6 +90,9 @@ ip_packet_match(const struct iphdr *ip, - - #define FWINV(bool, invflg) ((bool) ^ !!(ipinfo->invflags & (invflg))) - -+ if (ipinfo->flags & IPT_F_NO_DEF_MATCH) -+ return true; -+ - if (FWINV((ip->saddr&ipinfo->smsk.s_addr) != ipinfo->src.s_addr, - IPT_INV_SRCIP) || - FWINV((ip->daddr&ipinfo->dmsk.s_addr) != ipinfo->dst.s_addr, -@@ -140,13 +143,35 @@ ip_packet_match(const struct iphdr *ip, - return false; - } - -+#undef FWINV - return true; - } - - static bool --ip_checkentry(const struct ipt_ip *ip) -+ip_checkentry(struct ipt_ip *ip) - { -- if (ip->flags & ~IPT_F_MASK) { -+#define FWINV(bool, invflg) ((bool) || (ip->invflags & (invflg))) -+ -+ if (FWINV(ip->smsk.s_addr, IPT_INV_SRCIP) || -+ FWINV(ip->dmsk.s_addr, IPT_INV_DSTIP)) -+ goto has_match_rules; -+ -+ if (FWINV(!!((const unsigned long *)ip->iniface_mask)[0], -+ IPT_INV_VIA_IN) || -+ FWINV(!!((const unsigned long *)ip->outiface_mask)[0], -+ IPT_INV_VIA_OUT)) -+ goto has_match_rules; -+ -+ if (FWINV(ip->proto, IPT_INV_PROTO)) -+ goto has_match_rules; -+ -+ if (FWINV(ip->flags&IPT_F_FRAG, IPT_INV_FRAG)) -+ goto has_match_rules; -+ -+ ip->flags |= IPT_F_NO_DEF_MATCH; -+ -+has_match_rules: -+ if (ip->flags & ~(IPT_F_MASK|IPT_F_NO_DEF_MATCH)) { - duprintf("Unknown flag bits set: %08X\n", - ip->flags & ~IPT_F_MASK); - return false; -@@ -156,6 +181,8 @@ ip_checkentry(const struct ipt_ip *ip) - ip->invflags & ~IPT_INV_MASK); - return false; - } -+ -+#undef FWINV - return true; - } - -@@ -182,7 +209,6 @@ static inline bool unconditional(const s - static const struct ipt_ip uncond; - - return memcmp(ip, &uncond, sizeof(uncond)) == 0; --#undef FWINV - } - - /* for const-correctness */ -@@ -312,8 +338,29 @@ ipt_do_table(struct sk_buff *skb, - const struct xt_table_info *private; - struct xt_action_param acpar; - -- /* Initialization */ - ip = ip_hdr(skb); -+ -+ IP_NF_ASSERT(table->valid_hooks & (1 << hook)); -+ xt_info_rdlock_bh(); -+ private = table->private; -+ cpu = smp_processor_id(); -+ table_base = private->entries[cpu]; -+ e = get_entry(table_base, private->hook_entry[hook]); -+ -+ if (e->target_offset <= sizeof(struct ipt_entry) && -+ (e->ip.flags & IPT_F_NO_DEF_MATCH)) { -+ struct ipt_entry_target *t = ipt_get_target(e); -+ if (!t->u.kernel.target->target) { -+ int v = ((struct ipt_standard_target *)t)->verdict; -+ if ((v < 0) && (v != IPT_RETURN)) { -+ ADD_COUNTER(e->counters, ntohs(ip->tot_len), 1); -+ xt_info_rdunlock_bh(); -+ return (unsigned)(-v) - 1; -+ } -+ } -+ } -+ -+ /* Initialization */ - indev = in ? in->name : nulldevname; - outdev = out ? out->name : nulldevname; - /* We handle fragments by dealing with the first fragment as -@@ -330,17 +377,10 @@ ipt_do_table(struct sk_buff *skb, - acpar.family = NFPROTO_IPV4; - acpar.hooknum = hook; - -- IP_NF_ASSERT(table->valid_hooks & (1 << hook)); -- xt_info_rdlock_bh(); -- private = table->private; -- cpu = smp_processor_id(); -- table_base = private->entries[cpu]; - jumpstack = (struct ipt_entry **)private->jumpstack[cpu]; - stackptr = per_cpu_ptr(private->stackptr, cpu); - origptr = *stackptr; - -- e = get_entry(table_base, private->hook_entry[hook]); -- - pr_debug("Entering %s(hook %u); sp at %u (UF %p)\n", - table->name, hook, origptr, - get_entry(table_base, private->underflow[hook])); -@@ -970,6 +1010,7 @@ copy_entries_to_user(unsigned int total_ - unsigned int i; - const struct ipt_entry_match *m; - const struct ipt_entry_target *t; -+ u8 flags; - - e = (struct ipt_entry *)(loc_cpu_entry + off); - if (copy_to_user(userptr + off -@@ -980,6 +1021,14 @@ copy_entries_to_user(unsigned int total_ - goto free_counters; - } - -+ flags = e->ip.flags & ~IPT_F_NO_DEF_MATCH; -+ if (copy_to_user(userptr + off -+ + offsetof(struct ipt_entry, ip.flags), -+ &flags, sizeof(flags)) != 0) { -+ ret = -EFAULT; -+ goto free_counters; -+ } -+ - for (i = sizeof(struct ipt_entry); - i < e->target_offset; - i += m->u.match_size) { |