From e6ba7cb63b8ae0e13e6c2acc4067097c1181f6bf Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Tue, 27 Apr 2021 18:05:45 +0200 Subject: netfilter: nftables: add helper function to flush set elements This patch adds nft_set_flush() which prepares for the catch-all element support. Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_api.c | 31 ++++++++++++++++++------------- 1 file changed, 18 insertions(+), 13 deletions(-) (limited to 'net') diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 502240fbb087..3342f260d534 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -5839,10 +5839,10 @@ fail_elem: return err; } -static int nft_flush_set(const struct nft_ctx *ctx, - struct nft_set *set, - const struct nft_set_iter *iter, - struct nft_set_elem *elem) +static int nft_setelem_flush(const struct nft_ctx *ctx, + struct nft_set *set, + const struct nft_set_iter *iter, + struct nft_set_elem *elem) { struct nft_trans *trans; int err; @@ -5869,6 +5869,18 @@ err1: return err; } +static int nft_set_flush(struct nft_ctx *ctx, struct nft_set *set, u8 genmask) +{ + struct nft_set_iter iter = { + .genmask = genmask, + .fn = nft_setelem_flush, + }; + + set->ops->walk(ctx, set, &iter); + + return iter.err; +} + static int nf_tables_delsetelem(struct sk_buff *skb, const struct nfnl_info *info, const struct nlattr * const nla[]) @@ -5892,15 +5904,8 @@ static int nf_tables_delsetelem(struct sk_buff *skb, if (!list_empty(&set->bindings) && set->flags & NFT_SET_CONSTANT) return -EBUSY; - if (nla[NFTA_SET_ELEM_LIST_ELEMENTS] == NULL) { - struct nft_set_iter iter = { - .genmask = genmask, - .fn = nft_flush_set, - }; - set->ops->walk(&ctx, set, &iter); - - return iter.err; - } + if (!nla[NFTA_SET_ELEM_LIST_ELEMENTS]) + return nft_set_flush(&ctx, set, genmask); nla_for_each_nested(attr, nla[NFTA_SET_ELEM_LIST_ELEMENTS], rem) { err = nft_del_setelem(&ctx, set, attr); -- cgit v1.2.3-58-ga151