From 4fba3958a9b9c7ab24cfb16bdeaa7ba3f749691b Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Mon, 19 Dec 2022 20:07:52 +0100 Subject: netfilter: nf_tables: consolidate set description [ Upstream commit bed4a63ea4ae77cfe5aae004ef87379f0655260a ] Add the following fields to the set description: - key type - data type - object type - policy - gc_int: garbage collection interval) - timeout: element timeout This prepares for stricter set type checks on updates in a follow up patch. Signed-off-by: Pablo Neira Ayuso Stable-dep-of: f6594c372afd ("netfilter: nf_tables: perform type checking for existing sets") Signed-off-by: Sasha Levin --- net/netfilter/nf_tables_api.c | 58 +++++++++++++++++++++---------------------- 1 file changed, 28 insertions(+), 30 deletions(-) (limited to 'net') diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 7a09421f19e1..a31f8dc40646 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -3732,8 +3732,7 @@ static bool nft_set_ops_candidate(const struct nft_set_type *type, u32 flags) static const struct nft_set_ops * nft_select_set_ops(const struct nft_ctx *ctx, const struct nlattr * const nla[], - const struct nft_set_desc *desc, - enum nft_set_policies policy) + const struct nft_set_desc *desc) { struct nftables_pernet *nft_net = nft_pernet(ctx->net); const struct nft_set_ops *ops, *bops; @@ -3762,7 +3761,7 @@ nft_select_set_ops(const struct nft_ctx *ctx, if (!ops->estimate(desc, flags, &est)) continue; - switch (policy) { + switch (desc->policy) { case NFT_SET_POL_PERFORMANCE: if (est.lookup < best.lookup) break; @@ -4344,7 +4343,6 @@ static int nf_tables_set_desc_parse(struct nft_set_desc *desc, static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info, const struct nlattr * const nla[]) { - u32 ktype, dtype, flags, policy, gc_int, objtype; struct netlink_ext_ack *extack = info->extack; u8 genmask = nft_genmask_next(info->net); u8 family = info->nfmsg->nfgen_family; @@ -4357,10 +4355,10 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info, struct nft_set *set; struct nft_ctx ctx; size_t alloc_size; - u64 timeout; char *name; int err, i; u16 udlen; + u32 flags; u64 size; if (nla[NFTA_SET_TABLE] == NULL || @@ -4371,10 +4369,10 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info, memset(&desc, 0, sizeof(desc)); - ktype = NFT_DATA_VALUE; + desc.ktype = NFT_DATA_VALUE; if (nla[NFTA_SET_KEY_TYPE] != NULL) { - ktype = ntohl(nla_get_be32(nla[NFTA_SET_KEY_TYPE])); - if ((ktype & NFT_DATA_RESERVED_MASK) == NFT_DATA_RESERVED_MASK) + desc.ktype = ntohl(nla_get_be32(nla[NFTA_SET_KEY_TYPE])); + if ((desc.ktype & NFT_DATA_RESERVED_MASK) == NFT_DATA_RESERVED_MASK) return -EINVAL; } @@ -4399,17 +4397,17 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info, return -EOPNOTSUPP; } - dtype = 0; + desc.dtype = 0; if (nla[NFTA_SET_DATA_TYPE] != NULL) { if (!(flags & NFT_SET_MAP)) return -EINVAL; - dtype = ntohl(nla_get_be32(nla[NFTA_SET_DATA_TYPE])); - if ((dtype & NFT_DATA_RESERVED_MASK) == NFT_DATA_RESERVED_MASK && - dtype != NFT_DATA_VERDICT) + desc.dtype = ntohl(nla_get_be32(nla[NFTA_SET_DATA_TYPE])); + if ((desc.dtype & NFT_DATA_RESERVED_MASK) == NFT_DATA_RESERVED_MASK && + desc.dtype != NFT_DATA_VERDICT) return -EINVAL; - if (dtype != NFT_DATA_VERDICT) { + if (desc.dtype != NFT_DATA_VERDICT) { if (nla[NFTA_SET_DATA_LEN] == NULL) return -EINVAL; desc.dlen = ntohl(nla_get_be32(nla[NFTA_SET_DATA_LEN])); @@ -4424,34 +4422,34 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info, if (!(flags & NFT_SET_OBJECT)) return -EINVAL; - objtype = ntohl(nla_get_be32(nla[NFTA_SET_OBJ_TYPE])); - if (objtype == NFT_OBJECT_UNSPEC || - objtype > NFT_OBJECT_MAX) + desc.objtype = ntohl(nla_get_be32(nla[NFTA_SET_OBJ_TYPE])); + if (desc.objtype == NFT_OBJECT_UNSPEC || + desc.objtype > NFT_OBJECT_MAX) return -EOPNOTSUPP; } else if (flags & NFT_SET_OBJECT) return -EINVAL; else - objtype = NFT_OBJECT_UNSPEC; + desc.objtype = NFT_OBJECT_UNSPEC; - timeout = 0; + desc.timeout = 0; if (nla[NFTA_SET_TIMEOUT] != NULL) { if (!(flags & NFT_SET_TIMEOUT)) return -EINVAL; - err = nf_msecs_to_jiffies64(nla[NFTA_SET_TIMEOUT], &timeout); + err = nf_msecs_to_jiffies64(nla[NFTA_SET_TIMEOUT], &desc.timeout); if (err) return err; } - gc_int = 0; + desc.gc_int = 0; if (nla[NFTA_SET_GC_INTERVAL] != NULL) { if (!(flags & NFT_SET_TIMEOUT)) return -EINVAL; - gc_int = ntohl(nla_get_be32(nla[NFTA_SET_GC_INTERVAL])); + desc.gc_int = ntohl(nla_get_be32(nla[NFTA_SET_GC_INTERVAL])); } - policy = NFT_SET_POL_PERFORMANCE; + desc.policy = NFT_SET_POL_PERFORMANCE; if (nla[NFTA_SET_POLICY] != NULL) - policy = ntohl(nla_get_be32(nla[NFTA_SET_POLICY])); + desc.policy = ntohl(nla_get_be32(nla[NFTA_SET_POLICY])); if (nla[NFTA_SET_DESC] != NULL) { err = nf_tables_set_desc_parse(&desc, nla[NFTA_SET_DESC]); @@ -4496,7 +4494,7 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info, if (!(info->nlh->nlmsg_flags & NLM_F_CREATE)) return -ENOENT; - ops = nft_select_set_ops(&ctx, nla, &desc, policy); + ops = nft_select_set_ops(&ctx, nla, &desc); if (IS_ERR(ops)) return PTR_ERR(ops); @@ -4536,18 +4534,18 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info, set->table = table; write_pnet(&set->net, net); set->ops = ops; - set->ktype = ktype; + set->ktype = desc.ktype; set->klen = desc.klen; - set->dtype = dtype; - set->objtype = objtype; + set->dtype = desc.dtype; + set->objtype = desc.objtype; set->dlen = desc.dlen; set->flags = flags; set->size = desc.size; - set->policy = policy; + set->policy = desc.policy; set->udlen = udlen; set->udata = udata; - set->timeout = timeout; - set->gc_int = gc_int; + set->timeout = desc.timeout; + set->gc_int = desc.gc_int; set->field_count = desc.field_count; for (i = 0; i < desc.field_count; i++) -- cgit v1.2.3