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netfilter: nf_tables: add flush field to struct nft_set_iter 

This provides context to walk callback iterator, thus, we know if the
walk happens from the set flush path. This is required by the new bitmap
set type coming in a follow up patch which has no real struct
nft_set_ext, so it has to allocate it based on the two bit compact
element representation.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2017-01-18 18:30:10 +01:00
parent 1ba1c41408
commit 1f48ff6c53
2 changed files with 5 additions and 0 deletions
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1
include/net/netfilter/nf_tables.h
View File

@ -203,6 +203,7 @@ struct nft_set_elem {
struct nft_set;
struct nft_set_iter {
u8 genmask;
bool flush;
unsigned int count;
unsigned int skip;
int err;

4
net/netfilter/nf_tables_api.c
View File

@ -3121,6 +3121,7 @@ int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set,
iter.count = 0;
iter.err = 0;
iter.fn = nf_tables_bind_check_setelem;
iter.flush = false;
set->ops->walk(ctx, set, &iter);
if (iter.err < 0)
@ -3374,6 +3375,7 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb)
args.iter.count = 0;
args.iter.err = 0;
args.iter.fn = nf_tables_dump_setelem;
args.iter.flush = false;
set->ops->walk(&ctx, set, &args.iter);
nla_nest_end(skb, nest);
@ -3939,6 +3941,7 @@ static int nf_tables_delsetelem(struct net *net, struct sock *nlsk,
struct nft_set_iter iter = {
.genmask = genmask,
.fn = nft_flush_set,
.flush = true,
};
set->ops->walk(&ctx, set, &iter);
@ -5089,6 +5092,7 @@ static int nf_tables_check_loops(const struct nft_ctx *ctx,
iter.count = 0;
iter.err = 0;
iter.fn = nf_tables_loop_check_setelem;
iter.flush = false;
set->ops->walk(ctx, set, &iter);
if (iter.err < 0)