@@ -705,6 +705,68 @@ static int nf_tables_newtable(struct sock *nlsk, struct sk_buff *skb,
return 0;
}
+static int nft_flush_table(struct nft_ctx *ctx)
+{
+ int err;
+ struct nft_chain *chain, *nc;
+ struct nft_set *set, *ns;
+
+ list_for_each_entry_safe(chain, nc, &ctx->table->chains, list) {
+ ctx->chain = chain;
+
+ err = nft_delrule_by_chain(ctx);
+ if (err < 0)
+ goto out;
+
+ err = nft_delchain(ctx);
+ if (err < 0)
+ goto out;
+ }
+
+ list_for_each_entry_safe(set, ns, &ctx->table->sets, list) {
+ if (set->flags & NFT_SET_ANONYMOUS)
+ continue;
+
+ err = nft_delset(ctx, set);
+ if (err < 0)
+ goto out;
+ }
+
+ err = nft_deltable(ctx);
+out:
+ return err;
+}
+
+static int nft_flush(struct nft_ctx *ctx, int family)
+{
+ struct nft_af_info *afi;
+ struct nft_table *table, *nt;
+ const struct nlattr * const *nla = ctx->nla;
+ int err = 0;
+
+ list_for_each_entry(afi, &ctx->net->nft.af_info, list) {
+ if (family != AF_UNSPEC && afi->family != family)
+ continue;
+
+ ctx->afi = afi;
+
+ list_for_each_entry_safe(table, nt, &afi->tables, list) {
+ if (nla[NFTA_TABLE_NAME] &&
+ nla_strcmp(nla[NFTA_TABLE_NAME], table->name) != 0)
+ continue;
+
+ ctx->table = table;
+
+ err = nft_flush_table(ctx);
+ if (err < 0)
+ goto out;
+ }
+ }
+
+out:
+ return err;
+}
+
static int nf_tables_deltable(struct sock *nlsk, struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const nla[])
@@ -716,6 +778,11 @@ static int nf_tables_deltable(struct sock *nlsk, struct sk_buff *skb,
int family = nfmsg->nfgen_family;
struct nft_ctx ctx;
+ nft_ctx_init(&ctx, skb, nlh, NULL, NULL, NULL, nla);
+ if (family == AF_UNSPEC || nla[NFTA_TABLE_NAME] == NULL)
+ return nft_flush(&ctx, family);
+
+
afi = nf_tables_afinfo_lookup(net, family, false);
if (IS_ERR(afi))
return PTR_ERR(afi);
@@ -725,12 +792,11 @@ static int nf_tables_deltable(struct sock *nlsk, struct sk_buff *skb,
return PTR_ERR(table);
if (table->flags & NFT_TABLE_INACTIVE)
return -ENOENT;
- if (table->use > 0)
- return -EBUSY;
- nft_ctx_init(&ctx, skb, nlh, afi, table, NULL, nla);
+ ctx.afi = afi;
+ ctx.table = table;
- return nft_deltable(&ctx);
+ return nft_flush_table(&ctx);
}
static void nf_tables_table_destroy(struct nft_ctx *ctx)
This patch extend the NFT_MSG_DELTABLE call to support flushing the entire ruleset. The options now are: * No family speficied, no table specified: flush all the ruleset. * Family specified, no table specified: flush all tables in the AF. * Family specified, table specified: flush the given table. Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> --- v2: address comments by Pablo: * don't return EINVAL if called with AF_UNSPEC and a concrete table. * A more generic function, nft_flush() v3: no changes, resending the series. net/netfilter/nf_tables_api.c | 74 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 70 insertions(+), 4 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html