diff options
Diffstat (limited to 'kernel/net/netfilter/ipset/ip_set_core.c')
| -rw-r--r-- | kernel/net/netfilter/ipset/ip_set_core.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/kernel/net/netfilter/ipset/ip_set_core.c b/kernel/net/netfilter/ipset/ip_set_core.c index 2532c92..a2030ee 100644 --- a/kernel/net/netfilter/ipset/ip_set_core.c +++ b/kernel/net/netfilter/ipset/ip_set_core.c @@ -321,6 +321,52 @@ ip_set_get_ipaddr6(struct nlattr *nla, union nf_inet_addr *ipaddr) } EXPORT_SYMBOL_GPL(ip_set_get_ipaddr6); +/* ipset data extension types, in size order */ + +const struct ip_set_ext_type ip_set_extensions[] = { + [IPSET_EXT_ID_COUNTER] = { + .type = IPSET_EXT_COUNTER, + .flag = IPSET_FLAG_WITH_COUNTERS, + .len = sizeof(struct ip_set_counter), + .align = __alignof__(struct ip_set_counter), + }, + [IPSET_EXT_ID_TIMEOUT] = { + .type = IPSET_EXT_TIMEOUT, + .len = sizeof(unsigned long), + .align = __alignof__(unsigned long), + }, +}; +EXPORT_SYMBOL_GPL(ip_set_extensions); + +static inline bool +add_extension(enum ip_set_ext_id id, u32 flags, struct nlattr *tb[]) +{ + return ip_set_extensions[id].flag ? + (flags & ip_set_extensions[id].flag) : + !!tb[IPSET_ATTR_TIMEOUT]; +} + +size_t +ip_set_elem_len(struct ip_set *set, struct nlattr *tb[], size_t len) +{ + enum ip_set_ext_id id; + size_t offset = 0; + u32 cadt_flags = 0; + + if (tb[IPSET_ATTR_CADT_FLAGS]) + cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); + for (id = 0; id < IPSET_EXT_ID_MAX; id++) { + if (!add_extension(id, cadt_flags, tb)) + continue; + offset += ALIGN(len + offset, ip_set_extensions[id].align); + set->offset[id] = offset; + set->extensions |= ip_set_extensions[id].type; + offset += ip_set_extensions[id].len; + } + return len + offset; +} +EXPORT_SYMBOL_GPL(ip_set_elem_len); + int ip_set_get_extensions(struct ip_set *set, struct nlattr *tb[], struct ip_set_ext *ext) |