1 files changed, 0 insertions, 120 deletions
diff --git a/nixos/modules/kernel-patches/0061-kernel-add-a-new-version-of-my-netfilter-speedup-pat.patch b/nixos/modules/kernel-patches/0061-kernel-add-a-new-version-of-my-netfilter-speedup-pat.patch
deleted file mode 100644
index 8a8c759..0000000
--- a/nixos/modules/kernel-patches/0061-kernel-add-a-new-version-of-my-netfilter-speedup-pat.patch
+++ /dev/null
@@ -1,120 +0,0 @@
-From fe64c15c96dfe5b5cbf99c89b5377b056790267c Mon Sep 17 00:00:00 2001
-From: Felix Fietkau <nbd@nbd.name>
-Date: Tue, 27 Sep 2022 16:22:04 +0200
-Subject: [PATCH 61/96] kernel: add a new version of my netfilter speedup
- patches for linux 2.6.39 and 3.0
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
- include/uapi/linux/netfilter_ipv4/ip_tables.h |  1 +
- net/ipv4/netfilter/ip_tables.c                | 42 ++++++++++++++++++-
- 2 files changed, 42 insertions(+), 1 deletion(-)
-
-diff --git a/include/uapi/linux/netfilter_ipv4/ip_tables.h b/include/uapi/linux/netfilter_ipv4/ip_tables.h
-index 50c7fee625ae..c31564b13ba3 100644
---- a/include/uapi/linux/netfilter_ipv4/ip_tables.h
-+++ b/include/uapi/linux/netfilter_ipv4/ip_tables.h
-@@ -89,6 +89,7 @@ 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. */
-diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
-index 2ed7c58b471a..76c01661c4e4 100644
---- a/net/ipv4/netfilter/ip_tables.c
-+++ b/net/ipv4/netfilter/ip_tables.c
-@@ -50,6 +50,9 @@ ip_packet_match(const struct iphdr *ip,
- {
- 	unsigned long ret;
- 
-+	if (ipinfo->flags & IPT_F_NO_DEF_MATCH)
-+		return true;
-+
- 	if (NF_INVF(ipinfo, IPT_INV_SRCIP,
- 		    (ip->saddr & ipinfo->smsk.s_addr) != ipinfo->src.s_addr) ||
- 	    NF_INVF(ipinfo, IPT_INV_DSTIP,
-@@ -80,6 +83,29 @@ ip_packet_match(const struct iphdr *ip,
- 	return true;
- }
- 
-+static void
-+ip_checkdefault(struct ipt_ip *ip)
-+{
-+	static const char iface_mask[IFNAMSIZ] = {};
-+
-+	if (ip->invflags || ip->flags & IPT_F_FRAG)
-+		return;
-+
-+	if (memcmp(ip->iniface_mask, iface_mask, IFNAMSIZ) != 0)
-+		return;
-+
-+	if (memcmp(ip->outiface_mask, iface_mask, IFNAMSIZ) != 0)
-+		return;
-+
-+	if (ip->smsk.s_addr || ip->dmsk.s_addr)
-+		return;
-+
-+	if (ip->proto)
-+		return;
-+
-+	ip->flags |= IPT_F_NO_DEF_MATCH;
-+}
-+
- static bool
- ip_checkentry(const struct ipt_ip *ip)
- {
-@@ -525,6 +551,8 @@ find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
- 	struct xt_mtchk_param mtpar;
- 	struct xt_entry_match *ematch;
- 
-+	ip_checkdefault(&e->ip);
-+
- 	if (!xt_percpu_counter_alloc(alloc_state, &e->counters))
- 		return -ENOMEM;
- 
-@@ -819,6 +847,7 @@ copy_entries_to_user(unsigned int total_size,
- 	const struct xt_table_info *private = table->private;
- 	int ret = 0;
- 	const void *loc_cpu_entry;
-+	u8 flags;
- 
- 	counters = alloc_counters(table);
- 	if (IS_ERR(counters))
-@@ -846,6 +875,14 @@ copy_entries_to_user(unsigned int total_size,
- 			goto free_counters;
- 		}
- 
-+		flags = e->ip.flags & IPT_F_MASK;
-+		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) {
-@@ -1224,12 +1261,15 @@ compat_copy_entry_to_user(struct ipt_entry *e, void __user **dstptr,
- 	compat_uint_t origsize;
- 	const struct xt_entry_match *ematch;
- 	int ret = 0;
-+	u8 flags = e->ip.flags & IPT_F_MASK;
- 
- 	origsize = *size;
- 	ce = *dstptr;
- 	if (copy_to_user(ce, e, sizeof(struct ipt_entry)) != 0 ||
- 	    copy_to_user(&ce->counters, &counters[i],
--	    sizeof(counters[i])) != 0)
-+	    sizeof(counters[i])) != 0 ||
-+	    copy_to_user(&ce->ip.flags, &flags,
-+	    sizeof(flags)) != 0)
- 		return -EFAULT;
- 
- 	*dstptr += sizeof(struct compat_ipt_entry);
--- 
-2.37.2
-