This patch allows you to delete an existing flowtable:
# nft delete flowtable x m
Signed-off-by: Pablo Neira Ayuso <pa...@netfilter.org>
---
include/mnl.h | 3 +++
include/netlink.h | 3 +++
src/evaluate.c | 1 +
src/mnl.c | 16 ++++++++++++++++
src/netlink.c | 18 ++++++++++++++++++
src/parser_bison.y | 4 ++++
src/rule.c | 3 +++
7 files changed, 48 insertions(+)
diff --git a/include/mnl.h b/include/mnl.h
index 470b29787fa6..1b2450a9388e 100644
--- a/include/mnl.h
+++ b/include/mnl.h
@@ -95,6 +95,9 @@ mnl_nft_flowtable_dump(struct netlink_ctx *ctx, int family,
const char *table);
int mnl_nft_flowtable_batch_add(struct nftnl_flowtable *flo,
struct nftnl_batch *batch, unsigned int flags,
uint32_t seqnum);
+int mnl_nft_flowtable_batch_del(struct nftnl_flowtable *flow,
+ struct nftnl_batch *batch, unsigned int flags,
+ uint32_t seqnum);
struct nftnl_ruleset *mnl_nft_ruleset_dump(struct netlink_ctx *ctx,
uint32_t family);
diff --git a/include/netlink.h b/include/netlink.h
index b80acbabe80f..9ae021a8dd49 100644
--- a/include/netlink.h
+++ b/include/netlink.h
@@ -188,6 +188,9 @@ extern int netlink_list_flowtables(struct netlink_ctx *ctx,
extern int netlink_add_flowtable(struct netlink_ctx *ctx,
const struct handle *h, struct flowtable *ft,
uint32_t flags);
+extern int netlink_delete_flowtable(struct netlink_ctx *ctx,
+ const struct handle *h,
+ struct location *loc);
extern void netlink_dump_chain(const struct nftnl_chain *nlc,
struct netlink_ctx *ctx);
diff --git a/src/evaluate.c b/src/evaluate.c
index 70a61c72838a..892d1e0c8c5b 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -3118,6 +3118,7 @@ static int cmd_evaluate_delete(struct eval_ctx *ctx,
struct cmd *cmd)
case CMD_OBJ_RULE:
case CMD_OBJ_CHAIN:
case CMD_OBJ_TABLE:
+ case CMD_OBJ_FLOWTABLE:
case CMD_OBJ_COUNTER:
case CMD_OBJ_QUOTA:
case CMD_OBJ_CT_HELPER:
diff --git a/src/mnl.c b/src/mnl.c
index be6e05da5936..f620a3bda8d5 100644
--- a/src/mnl.c
+++ b/src/mnl.c
@@ -1027,6 +1027,22 @@ int mnl_nft_flowtable_batch_add(struct nftnl_flowtable
*flo,
return 0;
}
+int mnl_nft_flowtable_batch_del(struct nftnl_flowtable *flo,
+ struct nftnl_batch *batch, unsigned int flags,
+ uint32_t seqnum)
+{
+ struct nlmsghdr *nlh;
+
+ nlh = nftnl_nlmsg_build_hdr(nftnl_batch_buffer(batch),
+ NFT_MSG_DELFLOWTABLE,
+ nftnl_flowtable_get_u32(flo,
NFTNL_FLOWTABLE_FAMILY),
+ flags, seqnum);
+ nftnl_flowtable_nlmsg_build_payload(nlh, flo);
+ mnl_nft_batch_continue(batch);
+
+ return 0;
+}
+
/*
* ruleset
*/
diff --git a/src/netlink.c b/src/netlink.c
index 89513584a50f..56c6b6a3725e 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -1820,6 +1820,24 @@ int netlink_add_flowtable(struct netlink_ctx *ctx, const
struct handle *h,
return err;
}
+int netlink_delete_flowtable(struct netlink_ctx *ctx, const struct handle *h,
+ struct location *loc)
+{
+ struct nftnl_flowtable *flo;
+ int err;
+
+ flo = alloc_nftnl_flowtable(h, NULL);
+ netlink_dump_flowtable(flo, ctx);
+
+ err = mnl_nft_flowtable_batch_del(flo, ctx->batch, 0, ctx->seqnum);
+ if (err < 0)
+ netlink_io_error(ctx, loc, "Could not delete flowtable: %s",
+ strerror(errno));
+ nftnl_flowtable_free(flo);
+
+ return err;
+}
+
static int list_obj_cb(struct nftnl_obj *nls, void *arg)
{
struct netlink_ctx *ctx = arg;
diff --git a/src/parser_bison.y b/src/parser_bison.y
index 45cc3b4114ff..0623cd12aeb5 100644
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -1023,6 +1023,10 @@ delete_cmd : TABLE
table_spec
{
$$ = cmd_alloc(CMD_DELETE, CMD_OBJ_SETELEM,
&$2, &@$, $3);
}
+ | FLOWTABLE flowtable_spec
+ {
+ $$ = cmd_alloc(CMD_DELETE, CMD_OBJ_FLOWTABLE,
&$2, &@$, NULL);
+ }
| COUNTER obj_spec
{
$$ = cmd_alloc(CMD_DELETE, CMD_OBJ_COUNTER,
&$2, &@$, NULL);
diff --git a/src/rule.c b/src/rule.c
index 8a38bcc66a66..b06f30eb5528 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -1174,6 +1174,9 @@ static int do_command_delete(struct netlink_ctx *ctx,
struct cmd *cmd)
case CMD_OBJ_LIMIT:
return netlink_delete_obj(ctx, &cmd->handle, &cmd->location,
NFT_OBJECT_LIMIT);
+ case CMD_OBJ_FLOWTABLE:
+ return netlink_delete_flowtable(ctx, &cmd->handle,
+ &cmd->location);
default:
BUG("invalid command object type %u\n", cmd->obj);
}
--
2.11.0
--
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