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netfilter: nf_tables: allow set names up to 32 bytes

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Currently, we support set names of up to 16 bytes, get this aligned
with the maximum length we can use in ipset to make it easier when
considering migration to nf_tables.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2016-05-04 17:49:53 +02:00
parent d7cdf81657
commit cb39ad8b8e
3 changed files with 5 additions and 4 deletions
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2
include/net/netfilter/nf_tables.h
View file

@ -303,7 +303,7 @@ void nft_unregister_set(struct nft_set_ops *ops);
struct nft_set {
struct list_head list;
struct list_head bindings;
char name[IFNAMSIZ];
char name[NFT_SET_MAXNAMELEN];
u32 ktype;
u32 dtype;
u32 size;

1
include/uapi/linux/netfilter/nf_tables.h
View file

@ -3,6 +3,7 @@
#define NFT_TABLE_MAXNAMELEN 32
#define NFT_CHAIN_MAXNAMELEN 32
#define NFT_SET_MAXNAMELEN 32
#define NFT_USERDATA_MAXLEN 256
/**

6
net/netfilter/nf_tables_api.c
View file

@ -2317,7 +2317,7 @@ nft_select_set_ops(const struct nlattr * const nla[],
static const struct nla_policy nft_set_policy[NFTA_SET_MAX + 1] = {
[NFTA_SET_TABLE] = { .type = NLA_STRING },
[NFTA_SET_NAME] = { .type = NLA_STRING,
.len = IFNAMSIZ - 1 },
.len = NFT_SET_MAXNAMELEN - 1 },
[NFTA_SET_FLAGS] = { .type = NLA_U32 },
[NFTA_SET_KEY_TYPE] = { .type = NLA_U32 },
[NFTA_SET_KEY_LEN] = { .type = NLA_U32 },
@ -2401,7 +2401,7 @@ static int nf_tables_set_alloc_name(struct nft_ctx *ctx, struct nft_set *set,
unsigned long *inuse;
unsigned int n = 0, min = 0;
p = strnchr(name, IFNAMSIZ, '%');
p = strnchr(name, NFT_SET_MAXNAMELEN, '%');
if (p != NULL) {
if (p[1] != 'd' || strchr(p + 2, '%'))
return -EINVAL;
@ -2696,7 +2696,7 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk,
struct nft_table *table;
struct nft_set *set;
struct nft_ctx ctx;
char name[IFNAMSIZ];
char name[NFT_SET_MAXNAMELEN];
unsigned int size;
bool create;
u64 timeout;