diff options
| -rw-r--r-- | include/net/netfilter/nf_tables.h | 4 | ||||
| -rw-r--r-- | include/uapi/linux/netfilter/nf_tables.h | 2 | ||||
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 21 |
3 files changed, 26 insertions, 1 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index 0191fbb..f6b1daf 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -291,6 +291,8 @@ void nft_unregister_set(struct nft_set_ops *ops); * @timeout: default timeout value in msecs * @gc_int: garbage collection interval in msecs * @policy: set parameterization (see enum nft_set_policies) + * @udlen: user data length + * @udata: user data * @ops: set ops * @pnet: network namespace * @flags: set flags @@ -310,6 +312,8 @@ struct nft_set { u64 timeout; u32 gc_int; u16 policy; + u16 udlen; + unsigned char *udata; /* runtime data below here */ const struct nft_set_ops *ops ____cacheline_aligned; possible_net_t pnet; diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index 731288a..03c28a4 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -291,6 +291,7 @@ enum nft_set_desc_attributes { * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32) * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64) * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32) + * @NFTA_SET_USERDATA: user data (NLA_BINARY) */ enum nft_set_attributes { NFTA_SET_UNSPEC, @@ -306,6 +307,7 @@ enum nft_set_attributes { NFTA_SET_ID, NFTA_SET_TIMEOUT, NFTA_SET_GC_INTERVAL, + NFTA_SET_USERDATA, __NFTA_SET_MAX }; #define NFTA_SET_MAX (__NFTA_SET_MAX - 1) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index f5c3971..2011977 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -2323,6 +2323,8 @@ static const struct nla_policy nft_set_policy[NFTA_SET_MAX + 1] = { [NFTA_SET_ID] = { .type = NLA_U32 }, [NFTA_SET_TIMEOUT] = { .type = NLA_U64 }, [NFTA_SET_GC_INTERVAL] = { .type = NLA_U32 }, + [NFTA_SET_USERDATA] = { .type = NLA_BINARY, + .len = NFT_USERDATA_MAXLEN }, }; static const struct nla_policy nft_set_desc_policy[NFTA_SET_DESC_MAX + 1] = { @@ -2482,6 +2484,9 @@ static int nf_tables_fill_set(struct sk_buff *skb, const struct nft_ctx *ctx, goto nla_put_failure; } + if (nla_put(skb, NFTA_SET_USERDATA, set->udlen, set->udata)) + goto nla_put_failure; + desc = nla_nest_start(skb, NFTA_SET_DESC); if (desc == NULL) goto nla_put_failure; @@ -2691,6 +2696,8 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk, u64 timeout; u32 ktype, dtype, flags, policy, gc_int; struct nft_set_desc desc; + unsigned char *udata; + u16 udlen; int err; if (nla[NFTA_SET_TABLE] == NULL || @@ -2803,12 +2810,16 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk, if (IS_ERR(ops)) return PTR_ERR(ops); + udlen = 0; + if (nla[NFTA_SET_USERDATA]) + udlen = nla_len(nla[NFTA_SET_USERDATA]); + size = 0; if (ops->privsize != NULL) size = ops->privsize(nla); err = -ENOMEM; - set = kzalloc(sizeof(*set) + size, GFP_KERNEL); + set = kzalloc(sizeof(*set) + size + udlen, GFP_KERNEL); if (set == NULL) goto err1; @@ -2817,6 +2828,12 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk, if (err < 0) goto err2; + udata = NULL; + if (udlen) { + udata = set->data + size; + nla_memcpy(udata, nla[NFTA_SET_USERDATA], udlen); + } + INIT_LIST_HEAD(&set->bindings); write_pnet(&set->pnet, net); set->ops = ops; @@ -2827,6 +2844,8 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk, set->flags = flags; set->size = desc.size; set->policy = policy; + set->udlen = udlen; + set->udata = udata; set->timeout = timeout; set->gc_int = gc_int; |
