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Diffstat (limited to 'target/linux/generic/pending-4.9/611-netfilter_match_bypass_default_table.patch')
-rw-r--r--target/linux/generic/pending-4.9/611-netfilter_match_bypass_default_table.patch119
1 files changed, 0 insertions, 119 deletions
diff --git a/target/linux/generic/pending-4.9/611-netfilter_match_bypass_default_table.patch b/target/linux/generic/pending-4.9/611-netfilter_match_bypass_default_table.patch
deleted file mode 100644
index 12e4bd5c57..0000000000
--- a/target/linux/generic/pending-4.9/611-netfilter_match_bypass_default_table.patch
+++ /dev/null
@@ -1,119 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Subject: netfilter: match bypass default table
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
- net/ipv4/netfilter/ip_tables.c | 79 +++++++++++++++++++++++++++++++-----------
- 1 file changed, 58 insertions(+), 21 deletions(-)
-
---- a/net/ipv4/netfilter/ip_tables.c
-+++ b/net/ipv4/netfilter/ip_tables.c
-@@ -254,6 +254,33 @@ struct ipt_entry *ipt_next_entry(const s
- return (void *)entry + entry->next_offset;
- }
-
-+static bool
-+ipt_handle_default_rule(struct ipt_entry *e, unsigned int *verdict)
-+{
-+ struct xt_entry_target *t;
-+ struct xt_standard_target *st;
-+
-+ if (e->target_offset != sizeof(struct ipt_entry))
-+ return false;
-+
-+ if (!(e->ip.flags & IPT_F_NO_DEF_MATCH))
-+ return false;
-+
-+ t = ipt_get_target(e);
-+ if (t->u.kernel.target->target)
-+ return false;
-+
-+ st = (struct xt_standard_target *) t;
-+ if (st->verdict == XT_RETURN)
-+ return false;
-+
-+ if (st->verdict >= 0)
-+ return false;
-+
-+ *verdict = (unsigned)(-st->verdict) - 1;
-+ return true;
-+}
-+
- /* Returns one of the generic firewall policies, like NF_ACCEPT. */
- unsigned int
- ipt_do_table(struct sk_buff *skb,
-@@ -274,28 +301,8 @@ ipt_do_table(struct sk_buff *skb,
- unsigned int addend;
-
- /* Initialization */
-- stackidx = 0;
-- ip = ip_hdr(skb);
-- indev = state->in ? state->in->name : nulldevname;
-- outdev = state->out ? state->out->name : nulldevname;
-- /* We handle fragments by dealing with the first fragment as
-- * if it was a normal packet. All other fragments are treated
-- * normally, except that they will NEVER match rules that ask
-- * things we don't know, ie. tcp syn flag or ports). If the
-- * rule is also a fragment-specific rule, non-fragments won't
-- * match it. */
-- acpar.fragoff = ntohs(ip->frag_off) & IP_OFFSET;
-- acpar.thoff = ip_hdrlen(skb);
-- acpar.hotdrop = false;
-- acpar.net = state->net;
-- acpar.in = state->in;
-- acpar.out = state->out;
-- acpar.family = NFPROTO_IPV4;
-- acpar.hooknum = hook;
--
- IP_NF_ASSERT(table->valid_hooks & (1 << hook));
- local_bh_disable();
-- addend = xt_write_recseq_begin();
- private = table->private;
- cpu = smp_processor_id();
- /*
-@@ -304,6 +311,23 @@ ipt_do_table(struct sk_buff *skb,
- */
- smp_read_barrier_depends();
- table_base = private->entries;
-+
-+ e = get_entry(table_base, private->hook_entry[hook]);
-+ if (ipt_handle_default_rule(e, &verdict)) {
-+ struct xt_counters *counter;
-+
-+ counter = xt_get_this_cpu_counter(&e->counters);
-+ ADD_COUNTER(*counter, skb->len, 1);
-+ local_bh_enable();
-+ return verdict;
-+ }
-+
-+ stackidx = 0;
-+ ip = ip_hdr(skb);
-+ indev = state->in ? state->in->name : nulldevname;
-+ outdev = state->out ? state->out->name : nulldevname;
-+
-+ addend = xt_write_recseq_begin();
- jumpstack = (struct ipt_entry **)private->jumpstack[cpu];
-
- /* Switch to alternate jumpstack if we're being invoked via TEE.
-@@ -316,7 +340,20 @@ ipt_do_table(struct sk_buff *skb,
- if (static_key_false(&xt_tee_enabled))
- jumpstack += private->stacksize * __this_cpu_read(nf_skb_duplicated);
-
-- e = get_entry(table_base, private->hook_entry[hook]);
-+ /* We handle fragments by dealing with the first fragment as
-+ * if it was a normal packet. All other fragments are treated
-+ * normally, except that they will NEVER match rules that ask
-+ * things we don't know, ie. tcp syn flag or ports). If the
-+ * rule is also a fragment-specific rule, non-fragments won't
-+ * match it. */
-+ acpar.fragoff = ntohs(ip->frag_off) & IP_OFFSET;
-+ acpar.thoff = ip_hdrlen(skb);
-+ acpar.hotdrop = false;
-+ acpar.net = state->net;
-+ acpar.in = state->in;
-+ acpar.out = state->out;
-+ acpar.family = NFPROTO_IPV4;
-+ acpar.hooknum = hook;
-
- do {
- const struct xt_entry_target *t;