diff options
Diffstat (limited to 'src/expr/meta.c')
| -rw-r--r-- | src/expr/meta.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/expr/meta.c b/src/expr/meta.c index 34fbb9b..601248f 100644 --- a/src/expr/meta.c +++ b/src/expr/meta.c @@ -14,6 +14,7 @@ #include <string.h> #include <arpa/inet.h> #include <errno.h> +#include <net/if.h> #include <linux/netfilter/nf_tables.h> #include "internal.h" @@ -132,6 +133,44 @@ nftnl_expr_meta_parse(struct nftnl_expr *e, struct nlattr *attr) return 0; } +static int nftnl_meta_reg_len(const struct nftnl_expr *e) +{ + const struct nftnl_expr_meta *meta = nftnl_expr_data(e); + + switch (meta->key) { + case NFT_META_IIFNAME: + case NFT_META_OIFNAME: + case NFT_META_IIFKIND: + case NFT_META_OIFKIND: + case NFT_META_SDIFNAME: + case NFT_META_BRI_IIFNAME: + case NFT_META_BRI_OIFNAME: + return IFNAMSIZ; + case NFT_META_TIME_NS: + return sizeof(uint64_t); + default: + break; + } + + return sizeof(uint32_t); +} + +static bool nftnl_meta_reg_cmp(const struct nftnl_reg *reg, + const struct nftnl_expr *e) +{ + const struct nftnl_expr_meta *meta = nftnl_expr_data(e); + + return reg->meta.key == meta->key; +} + +static void nftnl_meta_reg_update(struct nftnl_reg *reg, + const struct nftnl_expr *e) +{ + const struct nftnl_expr_meta *meta = nftnl_expr_data(e); + + reg->meta.key = meta->key; +} + static const char *meta_key2str_array[NFT_META_MAX] = { [NFT_META_LEN] = "len", [NFT_META_PROTOCOL] = "protocol", @@ -217,4 +256,9 @@ struct expr_ops expr_ops_meta = { .parse = nftnl_expr_meta_parse, .build = nftnl_expr_meta_build, .snprintf = nftnl_expr_meta_snprintf, + .reg = { + .len = nftnl_meta_reg_len, + .cmp = nftnl_meta_reg_cmp, + .update = nftnl_meta_reg_update, + }, }; |