diff options
author | Christian Göttsche <cgzones@googlemail.com> | 2019-11-23 17:22:39 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-11-25 15:44:00 +0100 |
commit | 2250296370752e516dc367f1239753b15efbea94 (patch) | |
tree | db51d55ea3f2fec79477ab35614994fb726d5fee /src/meta.c | |
parent | 3ecea86f855dd964c95b0481c9010ae200e90560 (diff) |
src: add ability to set/get secmarks to/from connection
Labeling established and related packets requires the secmark to be stored in the connection.
Add the ability to store and retrieve secmarks like:
...
chain input {
...
# label new incoming packets
ct state new meta secmark set tcp dport map @secmapping_in
# add label to connection
ct state new ct secmark set meta secmark
# set label for est/rel packets from connection
ct state established,related meta secmark set ct secmark
...
}
...
chain output {
...
# label new outgoing packets
ct state new meta secmark set tcp dport map @secmapping_out
# add label to connection
ct state new ct secmark set meta secmark
# set label for est/rel packets from connection
ct state established,related meta secmark set ct secmark
...
}
...
This patch also disallow constant value on the right hand side.
# nft add rule x y meta secmark 12
Error: Cannot be used with right hand side constant value
add rule x y meta secmark 12
~~~~~~~~~~~~ ^^
# nft add rule x y ct secmark 12
Error: Cannot be used with right hand side constant value
add rule x y ct secmark 12
~~~~~~~~~~ ^^
# nft add rule x y ct secmark set 12
Error: ct secmark must not be set to constant value
add rule x y ct secmark set 12
^^^^^^^^^^^^^^^^^
This patch improves 3bc84e5c1fdd ("src: add support for setting secmark").
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/meta.c')
-rw-r--r-- | src/meta.c | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -698,6 +698,8 @@ const struct meta_template meta_templates[] = { [NFT_META_TIME_HOUR] = META_TEMPLATE("hour", &hour_type, 4 * BITS_PER_BYTE, BYTEORDER_HOST_ENDIAN), + [NFT_META_SECMARK] = META_TEMPLATE("secmark", &integer_type, + 32, BYTEORDER_HOST_ENDIAN), }; static bool meta_key_is_unqualified(enum nft_meta_keys key) |