Andrew A. Sabitov says:
I'd like to use a set (concatenation) of icmpv6 type and icmpv6 code
and check incoming icmpv6 traffic against it:
add set inet fw in_icmpv6_types { type icmpv6_type . icmpv6_code; }
add element inet fw in_icmpv6_types { 1 . 0 } # no route to destination
add element inet fw in_icmpv6_types { 1 . 1 } # communication with destination administratively prohibited
# ...
add rule inet fw in_icmpv6 icmpv6 type . icmpv6 code @in_icmpv6_types \
limit rate 15/minute accept
yields:
Error: can not use variable sized data types (integer) in concat expressions
icmpv6 type . icmpv6 code @in_icmpv6_types
~~~~~~~~~~~~~~^^^^^^^^^^^
Change 'code' type to the icmp/icmpv6 code type.
Needs minor change to test suite as nft will now display
human-readable names instead of numeric codes.
Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1276
Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
---
src/proto.c | 4 ++--
tests/py/ip/icmp.t | 4 ++--
tests/py/ip/icmp.t.payload.ip | 2 +-
tests/py/ip6/icmpv6.t | 6 +++---
tests/py/ip6/icmpv6.t.payload.ip6 | 2 +-
5 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/src/proto.c b/src/proto.c
index ed011efab222..d178bf39ea90 100644
--- a/src/proto.c
+++ b/src/proto.c
@@ -347,7 +347,7 @@ const struct proto_desc proto_icmp = {
.checksum_key = ICMPHDR_CHECKSUM,
.templates = {
[ICMPHDR_TYPE] = ICMPHDR_TYPE("type", &icmp_type_type, type),
- [ICMPHDR_CODE] = ICMPHDR_FIELD("code", code),
+ [ICMPHDR_CODE] = ICMPHDR_TYPE("code", &icmp_code_type, code),
[ICMPHDR_CHECKSUM] = ICMPHDR_FIELD("checksum", checksum),
[ICMPHDR_ID] = ICMPHDR_FIELD("id", un.echo.id),
[ICMPHDR_SEQ] = ICMPHDR_FIELD("sequence", un.echo.sequence),
@@ -686,7 +686,7 @@ const struct proto_desc proto_icmp6 = {
.checksum_key = ICMP6HDR_CHECKSUM,
.templates = {
[ICMP6HDR_TYPE] = ICMP6HDR_TYPE("type", &icmp6_type_type, icmp6_type),
- [ICMP6HDR_CODE] = ICMP6HDR_FIELD("code", icmp6_code),
+ [ICMP6HDR_CODE] = ICMP6HDR_TYPE("code", &icmpv6_code_type, icmp6_code),
[ICMP6HDR_CHECKSUM] = ICMP6HDR_FIELD("checksum", icmp6_cksum),
[ICMP6HDR_PPTR] = ICMP6HDR_FIELD("parameter-problem", icmp6_pptr),
[ICMP6HDR_MTU] = ICMP6HDR_FIELD("mtu", icmp6_mtu),
diff --git a/tests/py/ip/icmp.t b/tests/py/ip/icmp.t
index 5a7ce7e08bac..6c05fb9d0fbc 100644
--- a/tests/py/ip/icmp.t
+++ b/tests/py/ip/icmp.t
@@ -28,8 +28,8 @@ icmp code 33-55;ok
icmp code != 33-55;ok
icmp code { 33-55};ok
icmp code != { 33-55};ok
-icmp code { 2, 4, 54, 33, 56};ok
-icmp code != { 2, 4, 54, 33, 56};ok
+icmp code { 2, 4, 54, 33, 56};ok;icmp code { prot-unreachable, 4, 33, 54, 56}
+icmp code != { prot-unreachable, 4, 33, 54, 56};ok
icmp checksum 12343 accept;ok
icmp checksum != 12343 accept;ok
diff --git a/tests/py/ip/icmp.t.payload.ip b/tests/py/ip/icmp.t.payload.ip
index f959cf338295..27f222072d5d 100644
--- a/tests/py/ip/icmp.t.payload.ip
+++ b/tests/py/ip/icmp.t.payload.ip
@@ -184,7 +184,7 @@ ip test-ip4 input
[ payload load 1b @ transport header + 1 => reg 1 ]
[ lookup reg 1 set __set%d ]
-# icmp code != { 2, 4, 54, 33, 56}
+# icmp code != { prot-unreachable, 4, 33, 54, 56}
__set%d test-ip4 3
__set%d test-ip4 0
element 00000002 : 0 [end] element 00000004 : 0 [end] element 00000036 : 0 [end] element 00000021 : 0 [end] element 00000038 : 0 [end]
diff --git a/tests/py/ip6/icmpv6.t b/tests/py/ip6/icmpv6.t
index a898fe30c24c..2b41be92f5ce 100644
--- a/tests/py/ip6/icmpv6.t
+++ b/tests/py/ip6/icmpv6.t
@@ -28,10 +28,10 @@ icmpv6 type {router-renumbering, mld-listener-done, time-exceeded, nd-router-sol
icmpv6 type {mld-listener-query, time-exceeded, nd-router-advert} accept;ok
icmpv6 type != {mld-listener-query, time-exceeded, nd-router-advert} accept;ok
-icmpv6 code 4;ok
+icmpv6 code 4;ok;icmpv6 code port-unreachable
icmpv6 code 3-66;ok
-icmpv6 code {5, 6, 7} accept;ok
-icmpv6 code != {5, 6, 7} accept;ok
+icmpv6 code {5, 6, 7} accept;ok;icmpv6 code {policy-fail, reject-route, 7} accept
+icmpv6 code != {"policy-fail", "reject-route", 7} accept;ok;icmpv6 code != { policy-fail, reject-route, 7} accept
icmpv6 code { 3-66};ok
icmpv6 code != { 3-66};ok
diff --git a/tests/py/ip6/icmpv6.t.payload.ip6 b/tests/py/ip6/icmpv6.t.payload.ip6
index 7a630f9f8b09..f261333c795f 100644
--- a/tests/py/ip6/icmpv6.t.payload.ip6
+++ b/tests/py/ip6/icmpv6.t.payload.ip6
@@ -220,7 +220,7 @@ ip6 test-ip6 input
[ lookup reg 1 set __set%d ]
[ immediate reg 0 accept ]
-# icmpv6 code != {5, 6, 7} accept
+# icmpv6 code != {"policy-fail", "reject-route", 7} accept
__set%d test-ip6 3
__set%d test-ip6 0
element 00000005 : 0 [end] element 00000006 : 0 [end] element 00000007 : 0 [end]
--
2.16.4
