|
 |
acfc56 |
From 70dc225b23708c6ac96e2895488f3c6dea9e201d Mon Sep 17 00:00:00 2001
|
|
|
acfc56 |
From: Phil Sutter <psutter@redhat.com>
|
|
|
acfc56 |
Date: Mon, 7 Dec 2020 18:28:27 +0100
|
|
|
acfc56 |
Subject: [PATCH] proto: Fix ARP header field ordering
|
|
|
acfc56 |
|
|
|
acfc56 |
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1896334
|
|
|
acfc56 |
Upstream Status: nftables commit f751753f92ea7
|
|
|
acfc56 |
|
|
|
acfc56 |
commit f751753f92ea76f582f7d5d1fef8b4d5677ba589
|
|
|
acfc56 |
Author: Phil Sutter <phil@nwl.cc>
|
|
|
acfc56 |
Date: Tue Nov 10 13:07:49 2020 +0100
|
|
|
acfc56 |
|
|
|
acfc56 |
proto: Fix ARP header field ordering
|
|
|
acfc56 |
|
|
|
acfc56 |
In ARP header, destination ether address sits between source IP and
|
|
|
acfc56 |
destination IP addresses. Enum arp_hdr_fields had this wrong, which
|
|
|
acfc56 |
in turn caused wrong ordering of entries in proto_arp->templates. When
|
|
|
acfc56 |
expanding a combined payload expression, code assumes that template
|
|
|
acfc56 |
entries are ordered by header offset, therefore the destination ether
|
|
|
acfc56 |
address match was printed as raw if an earlier field was matched as
|
|
|
acfc56 |
well:
|
|
|
acfc56 |
|
|
|
acfc56 |
| arp saddr ip 192.168.1.1 arp daddr ether 3e:d1:3f:d6:12:0b
|
|
|
acfc56 |
|
|
|
acfc56 |
was printed as:
|
|
|
acfc56 |
|
|
|
acfc56 |
| arp saddr ip 192.168.1.1 @nh,144,48 69068440080907
|
|
|
acfc56 |
|
|
|
acfc56 |
Note: Although strictly not necessary, reorder fields in
|
|
|
acfc56 |
proto_arp->templates as well to match their actual ordering, just to
|
|
|
acfc56 |
avoid confusion.
|
|
|
acfc56 |
|
|
|
acfc56 |
Fixes: 4b0f2a712b579 ("src: support for arp sender and target ethernet and IPv4 addresses")
|
|
|
acfc56 |
Signed-off-by: Phil Sutter <phil@nwl.cc>
|
|
|
acfc56 |
---
|
|
|
acfc56 |
include/proto.h | 2 +-
|
|
|
acfc56 |
src/proto.c | 2 +-
|
|
|
8ff5ad |
tests/py/arp/arp.t | 3 ++
|
|
|
8ff5ad |
tests/py/arp/arp.t.json | 56 +++++++++++++++++++++++++++++++
|
|
|
8ff5ad |
tests/py/arp/arp.t.json.output | 28 ++++++++++++++++
|
|
|
8ff5ad |
tests/py/arp/arp.t.payload | 10 ++++++
|
|
|
8ff5ad |
tests/py/arp/arp.t.payload.netdev | 14 ++++++++
|
|
|
acfc56 |
7 files changed, 113 insertions(+), 2 deletions(-)
|
|
|
acfc56 |
|
|
|
acfc56 |
diff --git a/include/proto.h b/include/proto.h
|
|
|
acfc56 |
index 436cbe3..5a50059 100644
|
|
|
acfc56 |
--- a/include/proto.h
|
|
|
acfc56 |
+++ b/include/proto.h
|
|
|
acfc56 |
@@ -184,8 +184,8 @@ enum arp_hdr_fields {
|
|
|
acfc56 |
ARPHDR_PLN,
|
|
|
acfc56 |
ARPHDR_OP,
|
|
|
acfc56 |
ARPHDR_SADDR_ETHER,
|
|
|
acfc56 |
- ARPHDR_DADDR_ETHER,
|
|
|
acfc56 |
ARPHDR_SADDR_IP,
|
|
|
acfc56 |
+ ARPHDR_DADDR_ETHER,
|
|
|
acfc56 |
ARPHDR_DADDR_IP,
|
|
|
acfc56 |
};
|
|
|
acfc56 |
|
|
|
acfc56 |
diff --git a/src/proto.c b/src/proto.c
|
|
|
acfc56 |
index 8360abf..49c8c92 100644
|
|
|
acfc56 |
--- a/src/proto.c
|
|
|
acfc56 |
+++ b/src/proto.c
|
|
|
acfc56 |
@@ -908,8 +908,8 @@ const struct proto_desc proto_arp = {
|
|
|
acfc56 |
[ARPHDR_PLN] = ARPHDR_FIELD("plen", plen),
|
|
|
acfc56 |
[ARPHDR_OP] = ARPHDR_TYPE("operation", &arpop_type, oper),
|
|
|
acfc56 |
[ARPHDR_SADDR_ETHER] = ARPHDR_TYPE("saddr ether", ðeraddr_type, sha),
|
|
|
acfc56 |
- [ARPHDR_DADDR_ETHER] = ARPHDR_TYPE("daddr ether", ðeraddr_type, tha),
|
|
|
acfc56 |
[ARPHDR_SADDR_IP] = ARPHDR_TYPE("saddr ip", &ipaddr_type, spa),
|
|
|
acfc56 |
+ [ARPHDR_DADDR_ETHER] = ARPHDR_TYPE("daddr ether", ðeraddr_type, tha),
|
|
|
acfc56 |
[ARPHDR_DADDR_IP] = ARPHDR_TYPE("daddr ip", &ipaddr_type, tpa),
|
|
|
acfc56 |
},
|
|
|
acfc56 |
.format = {
|
|
|
acfc56 |
diff --git a/tests/py/arp/arp.t b/tests/py/arp/arp.t
|
|
|
acfc56 |
index 2540c0a..109d01d 100644
|
|
|
acfc56 |
--- a/tests/py/arp/arp.t
|
|
|
acfc56 |
+++ b/tests/py/arp/arp.t
|
|
|
acfc56 |
@@ -61,4 +61,7 @@ arp daddr ip 4.3.2.1;ok
|
|
|
acfc56 |
arp saddr ether aa:bb:cc:aa:bb:cc;ok
|
|
|
acfc56 |
arp daddr ether aa:bb:cc:aa:bb:cc;ok
|
|
|
acfc56 |
|
|
|
acfc56 |
+arp saddr ip 192.168.1.1 arp daddr ether fe:ed:00:c0:ff:ee;ok
|
|
|
acfc56 |
+arp daddr ether fe:ed:00:c0:ff:ee arp saddr ip 192.168.1.1;ok;arp saddr ip 192.168.1.1 arp daddr ether fe:ed:00:c0:ff:ee
|
|
|
acfc56 |
+
|
|
|
acfc56 |
meta iifname "invalid" arp ptype 0x0800 arp htype 1 arp hlen 6 arp plen 4 @nh,192,32 0xc0a88f10 @nh,144,48 set 0x112233445566;ok;iifname "invalid" arp htype 1 arp ptype ip arp hlen 6 arp plen 4 arp daddr ip 192.168.143.16 arp daddr ether set 11:22:33:44:55:66
|
|
|
acfc56 |
diff --git a/tests/py/arp/arp.t.json b/tests/py/arp/arp.t.json
|
|
|
acfc56 |
index 5f2f6cd..8508c17 100644
|
|
|
acfc56 |
--- a/tests/py/arp/arp.t.json
|
|
|
acfc56 |
+++ b/tests/py/arp/arp.t.json
|
|
|
acfc56 |
@@ -901,6 +901,62 @@
|
|
|
acfc56 |
}
|
|
|
acfc56 |
]
|
|
|
acfc56 |
|
|
|
acfc56 |
+# arp saddr ip 192.168.1.1 arp daddr ether fe:ed:00:c0:ff:ee
|
|
|
acfc56 |
+[
|
|
|
acfc56 |
+ {
|
|
|
acfc56 |
+ "match": {
|
|
|
acfc56 |
+ "left": {
|
|
|
acfc56 |
+ "payload": {
|
|
|
acfc56 |
+ "field": "saddr ip",
|
|
|
acfc56 |
+ "protocol": "arp"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ },
|
|
|
acfc56 |
+ "op": "==",
|
|
|
acfc56 |
+ "right": "192.168.1.1"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ },
|
|
|
acfc56 |
+ {
|
|
|
acfc56 |
+ "match": {
|
|
|
acfc56 |
+ "left": {
|
|
|
acfc56 |
+ "payload": {
|
|
|
acfc56 |
+ "field": "daddr ether",
|
|
|
acfc56 |
+ "protocol": "arp"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ },
|
|
|
acfc56 |
+ "op": "==",
|
|
|
acfc56 |
+ "right": "fe:ed:00:c0:ff:ee"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+]
|
|
|
acfc56 |
+
|
|
|
acfc56 |
+# arp daddr ether fe:ed:00:c0:ff:ee arp saddr ip 192.168.1.1
|
|
|
acfc56 |
+[
|
|
|
acfc56 |
+ {
|
|
|
acfc56 |
+ "match": {
|
|
|
acfc56 |
+ "left": {
|
|
|
acfc56 |
+ "payload": {
|
|
|
acfc56 |
+ "field": "daddr ether",
|
|
|
acfc56 |
+ "protocol": "arp"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ },
|
|
|
acfc56 |
+ "op": "==",
|
|
|
acfc56 |
+ "right": "fe:ed:00:c0:ff:ee"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ },
|
|
|
acfc56 |
+ {
|
|
|
acfc56 |
+ "match": {
|
|
|
acfc56 |
+ "left": {
|
|
|
acfc56 |
+ "payload": {
|
|
|
acfc56 |
+ "field": "saddr ip",
|
|
|
acfc56 |
+ "protocol": "arp"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ },
|
|
|
acfc56 |
+ "op": "==",
|
|
|
acfc56 |
+ "right": "192.168.1.1"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+]
|
|
|
acfc56 |
+
|
|
|
acfc56 |
# meta iifname "invalid" arp ptype 0x0800 arp htype 1 arp hlen 6 arp plen 4 @nh,192,32 0xc0a88f10 @nh,144,48 set 0x112233445566
|
|
|
acfc56 |
[
|
|
|
acfc56 |
{
|
|
|
acfc56 |
diff --git a/tests/py/arp/arp.t.json.output b/tests/py/arp/arp.t.json.output
|
|
|
acfc56 |
index b8507bf..afa75b2 100644
|
|
|
acfc56 |
--- a/tests/py/arp/arp.t.json.output
|
|
|
acfc56 |
+++ b/tests/py/arp/arp.t.json.output
|
|
|
acfc56 |
@@ -66,6 +66,34 @@
|
|
|
acfc56 |
}
|
|
|
acfc56 |
]
|
|
|
acfc56 |
|
|
|
acfc56 |
+# arp daddr ether fe:ed:00:c0:ff:ee arp saddr ip 192.168.1.1
|
|
|
acfc56 |
+[
|
|
|
acfc56 |
+ {
|
|
|
acfc56 |
+ "match": {
|
|
|
acfc56 |
+ "left": {
|
|
|
acfc56 |
+ "payload": {
|
|
|
acfc56 |
+ "field": "saddr ip",
|
|
|
acfc56 |
+ "protocol": "arp"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ },
|
|
|
acfc56 |
+ "op": "==",
|
|
|
acfc56 |
+ "right": "192.168.1.1"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ },
|
|
|
acfc56 |
+ {
|
|
|
acfc56 |
+ "match": {
|
|
|
acfc56 |
+ "left": {
|
|
|
acfc56 |
+ "payload": {
|
|
|
acfc56 |
+ "field": "daddr ether",
|
|
|
acfc56 |
+ "protocol": "arp"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ },
|
|
|
acfc56 |
+ "op": "==",
|
|
|
acfc56 |
+ "right": "fe:ed:00:c0:ff:ee"
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+ }
|
|
|
acfc56 |
+]
|
|
|
acfc56 |
+
|
|
|
acfc56 |
# meta iifname "invalid" arp ptype 0x0800 arp htype 1 arp hlen 6 arp plen 4 @nh,192,32 0xc0a88f10 @nh,144,48 set 0x112233445566
|
|
|
acfc56 |
[
|
|
|
acfc56 |
{
|
|
|
acfc56 |
diff --git a/tests/py/arp/arp.t.payload b/tests/py/arp/arp.t.payload
|
|
|
acfc56 |
index 52c9932..f819853 100644
|
|
|
acfc56 |
--- a/tests/py/arp/arp.t.payload
|
|
|
acfc56 |
+++ b/tests/py/arp/arp.t.payload
|
|
|
acfc56 |
@@ -307,3 +307,13 @@ arp test-arp input
|
|
|
acfc56 |
[ payload load 6b @ network header + 18 => reg 1 ]
|
|
|
acfc56 |
[ cmp eq reg 1 0xaaccbbaa 0x0000ccbb ]
|
|
|
acfc56 |
|
|
|
acfc56 |
+# arp saddr ip 192.168.1.1 arp daddr ether fe:ed:00:c0:ff:ee
|
|
|
acfc56 |
+arp
|
|
|
acfc56 |
+ [ payload load 10b @ network header + 14 => reg 1 ]
|
|
|
acfc56 |
+ [ cmp eq reg 1 0x0101a8c0 0xc000edfe 0x0000eeff ]
|
|
|
acfc56 |
+
|
|
|
acfc56 |
+# arp daddr ether fe:ed:00:c0:ff:ee arp saddr ip 192.168.1.1
|
|
|
acfc56 |
+arp
|
|
|
acfc56 |
+ [ payload load 10b @ network header + 14 => reg 1 ]
|
|
|
acfc56 |
+ [ cmp eq reg 1 0x0101a8c0 0xc000edfe 0x0000eeff ]
|
|
|
acfc56 |
+
|
|
|
acfc56 |
diff --git a/tests/py/arp/arp.t.payload.netdev b/tests/py/arp/arp.t.payload.netdev
|
|
|
acfc56 |
index 667691f..f57610c 100644
|
|
|
acfc56 |
--- a/tests/py/arp/arp.t.payload.netdev
|
|
|
acfc56 |
+++ b/tests/py/arp/arp.t.payload.netdev
|
|
|
acfc56 |
@@ -409,3 +409,17 @@ netdev test-netdev ingress
|
|
|
acfc56 |
[ payload load 6b @ network header + 18 => reg 1 ]
|
|
|
acfc56 |
[ cmp eq reg 1 0xaaccbbaa 0x0000ccbb ]
|
|
|
acfc56 |
|
|
|
acfc56 |
+# arp saddr ip 192.168.1.1 arp daddr ether fe:ed:00:c0:ff:ee
|
|
|
acfc56 |
+netdev
|
|
|
acfc56 |
+ [ meta load protocol => reg 1 ]
|
|
|
acfc56 |
+ [ cmp eq reg 1 0x00000608 ]
|
|
|
acfc56 |
+ [ payload load 10b @ network header + 14 => reg 1 ]
|
|
|
acfc56 |
+ [ cmp eq reg 1 0x0101a8c0 0xc000edfe 0x0000eeff ]
|
|
|
acfc56 |
+
|
|
|
acfc56 |
+# arp daddr ether fe:ed:00:c0:ff:ee arp saddr ip 192.168.1.1
|
|
|
acfc56 |
+netdev
|
|
|
acfc56 |
+ [ meta load protocol => reg 1 ]
|
|
|
acfc56 |
+ [ cmp eq reg 1 0x00000608 ]
|
|
|
acfc56 |
+ [ payload load 10b @ network header + 14 => reg 1 ]
|
|
|
acfc56 |
+ [ cmp eq reg 1 0x0101a8c0 0xc000edfe 0x0000eeff ]
|
|
|
acfc56 |
+
|
|
|
acfc56 |
--
|
|
|
8ff5ad |
2.31.1
|
|
|
acfc56 |
|