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netfilter: nf_tables: add flush field to struct nft_set_iter

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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
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@ -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)