path: root/include/expression.h
diff options
authorStefano Brivio <>2020-01-30 01:16:56 +0100
committerPablo Neira Ayuso <>2020-02-07 13:53:37 +0100
commit6156ba34018dddd59cb6737cfd5a69a0cbc5eaa4 (patch)
tree5602a86a1ebef4e82c5d0b3517bb4273a26d6ac6 /include/expression.h
parent9b94127950f9848bc5a1505ae65ca3045ff68a16 (diff)
src: Add support for NFTNL_SET_DESC_CONCAT
To support arbitrary range concatenations, the kernel needs to know how long each field in the concatenation is. The new libnftnl NFTNL_SET_DESC_CONCAT set attribute describes this as an array of lengths, in bytes, of concatenated fields. While evaluating concatenated expressions, export the datatype size into the new field_len array, and hand the data over via libnftnl. Similarly, when data is passed back from libnftnl, parse it into the set description. When set data is cloned, we now need to copy the additional fields in set_clone(), too. This change depends on the libnftnl patch with title: set: Add support for NFTA_SET_DESC_CONCAT attributes v4: No changes v3: Rework to use set description data instead of a stand-alone attribute v2: No changes Signed-off-by: Stefano Brivio <> Signed-off-by: Pablo Neira Ayuso <>
Diffstat (limited to 'include/expression.h')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/expression.h b/include/expression.h
index b3e79c49..6196be58 100644
--- a/include/expression.h
+++ b/include/expression.h
@@ -261,6 +261,8 @@ struct expr {
struct list_head expressions;
unsigned int size;
uint32_t set_flags;
+ uint8_t field_len[NFT_REG32_COUNT];
+ uint8_t field_count;
struct {