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-rw-r--r--meta-networking/recipes-filter/nftables/files/0005-src-ipv6-switch-implicit-dependencies-to-meta-l4prot.patch98
1 files changed, 0 insertions, 98 deletions
diff --git a/meta-networking/recipes-filter/nftables/files/0005-src-ipv6-switch-implicit-dependencies-to-meta-l4prot.patch b/meta-networking/recipes-filter/nftables/files/0005-src-ipv6-switch-implicit-dependencies-to-meta-l4prot.patch
deleted file mode 100644
index f600ae05c..000000000
--- a/meta-networking/recipes-filter/nftables/files/0005-src-ipv6-switch-implicit-dependencies-to-meta-l4prot.patch
+++ /dev/null
@@ -1,98 +0,0 @@
-From 2366ed9ffcb4f5f5341f10f0a1d1a4688d37ad87 Mon Sep 17 00:00:00 2001
-From: Florian Westphal <fw@strlen.de>
-Date: Wed, 22 Mar 2017 15:08:48 +0100
-Subject: [PATCH 3/4] src: ipv6: switch implicit dependencies to meta l4proto
-
-when using rule like
-
-ip6 filter input tcp dport 22
-nft generates:
- [ payload load 1b @ network header + 6 => reg 1 ]
- [ cmp eq reg 1 0x00000006 ]
- [ payload load 2b @ transport header + 2 => reg 1 ]
- [ cmp eq reg 1 0x00001600 ]
-
-which is: ip6 filter input ip6 nexthdr tcp dport 22
-IOW, such a rule won't match if e.g. a fragment header is in place.
-
-This changes ip6_proto to use 'meta l4proto' which is the protocol header
-found by exthdr walk.
-
-A side effect is that for bridge we get a shorter dependency chain as it
-no longer needs to prepend 'ether proto ipv6' for old 'ip6 nexthdr' dep.
-
-Only problem:
-
-ip6 nexthdr tcp tcp dport 22
-will now inject a (useless) meta l4 dependency as ip6 nexthdr is no
-longer flagged as EXPR_F_PROTOCOL, to avoid this add a small helper
-that skips the unneded meta dependency in that case.
-
-Signed-off-by: Florian Westphal <fw@strlen.de>
----
-Upstream-Status: Backport
-Signed-off-by: André Draszik <adraszik@tycoint.com>
- src/payload.c | 19 ++++++++++++++++++-
- src/proto.c | 2 +-
- 2 files changed, 19 insertions(+), 2 deletions(-)
-
-diff --git a/src/payload.c b/src/payload.c
-index 31e5a02..38db15e 100644
---- a/src/payload.c
-+++ b/src/payload.c
-@@ -117,6 +117,23 @@ static const struct expr_ops payload_expr_ops = {
- .pctx_update = payload_expr_pctx_update,
- };
-
-+/*
-+ * ipv6 is special case, we normally use 'meta l4proto' to fetch the last
-+ * l4 header of the ipv6 extension header chain so we will also match
-+ * tcp after a fragmentation header, for instance.
-+ *
-+ * If user specifically asks for nexthdr x, treat is as a full
-+ * dependency rather than injecting another (useless) meta l4 one.
-+ */
-+static bool proto_key_is_protocol(const struct proto_desc *desc, unsigned int type)
-+{
-+ if (type == desc->protocol_key ||
-+ (desc == &proto_ip6 && type == IP6HDR_NEXTHDR))
-+ return true;
-+
-+ return false;
-+}
-+
- struct expr *payload_expr_alloc(const struct location *loc,
- const struct proto_desc *desc,
- unsigned int type)
-@@ -129,7 +146,7 @@ struct expr *payload_expr_alloc(const struct location *loc,
- if (desc != NULL) {
- tmpl = &desc->templates[type];
- base = desc->base;
-- if (type == desc->protocol_key)
-+ if (proto_key_is_protocol(desc, type))
- flags = EXPR_F_PROTOCOL;
- } else {
- tmpl = &proto_unknown_template;
-diff --git a/src/proto.c b/src/proto.c
-index fcdfbe7..3b20a5f 100644
---- a/src/proto.c
-+++ b/src/proto.c
-@@ -707,7 +707,6 @@ const struct proto_desc proto_icmp6 = {
- const struct proto_desc proto_ip6 = {
- .name = "ip6",
- .base = PROTO_BASE_NETWORK_HDR,
-- .protocol_key = IP6HDR_NEXTHDR,
- .protocols = {
- PROTO_LINK(IPPROTO_ESP, &proto_esp),
- PROTO_LINK(IPPROTO_AH, &proto_ah),
-@@ -720,6 +719,7 @@ const struct proto_desc proto_ip6 = {
- PROTO_LINK(IPPROTO_ICMPV6, &proto_icmp6),
- },
- .templates = {
-+ [0] = PROTO_META_TEMPLATE("l4proto", &inet_protocol_type, NFT_META_L4PROTO, 8),
- [IP6HDR_VERSION] = HDR_BITFIELD("version", &integer_type, 0, 4),
- [IP6HDR_DSCP] = HDR_BITFIELD("dscp", &dscp_type, 4, 6),
- [IP6HDR_ECN] = HDR_BITFIELD("ecn", &ecn_type, 10, 2),
---
-2.11.0
-