Adding upstream version 1.2.6.upstream/1.2.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 172 insertions, 0 deletions

diff --git a/src/obj/limit.c b/src/obj/limit.c
new file mode 100644
index 0000000..d7b1aed
--- /dev/null
+++ b/src/obj/limit.c
@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 2017 Pablo M. Bermudo Garay <pablombg@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <arpa/inet.h>
+#include <errno.h>
+#include <inttypes.h>
+
+#include <linux/netfilter/nf_tables.h>
+
+#include "internal.h"
+#include <libmnl/libmnl.h>
+#include <libnftnl/object.h>
+
+#include "obj.h"
+
+static int nftnl_obj_limit_set(struct nftnl_obj *e, uint16_t type,
+			       const void *data, uint32_t data_len)
+{
+	struct nftnl_obj_limit *limit = nftnl_obj_data(e);
+
+	switch (type) {
+	case NFTNL_OBJ_LIMIT_RATE:
+		memcpy(&limit->rate, data, sizeof(limit->rate));
+		break;
+	case NFTNL_OBJ_LIMIT_UNIT:
+		memcpy(&limit->unit, data, sizeof(limit->unit));
+		break;
+	case NFTNL_OBJ_LIMIT_BURST:
+		memcpy(&limit->burst, data, sizeof(limit->burst));
+		break;
+	case NFTNL_OBJ_LIMIT_TYPE:
+		memcpy(&limit->type, data, sizeof(limit->type));
+		break;
+	case NFTNL_OBJ_LIMIT_FLAGS:
+		memcpy(&limit->flags, data, sizeof(limit->flags));
+		break;
+	default:
+		return -1;
+	}
+	return 0;
+}
+
+static const void *nftnl_obj_limit_get(const struct nftnl_obj *e,
+				       uint16_t type, uint32_t *data_len)
+{
+	struct nftnl_obj_limit *limit = nftnl_obj_data(e);
+
+	switch (type) {
+	case NFTNL_OBJ_LIMIT_RATE:
+		*data_len = sizeof(limit->rate);
+		return &limit->rate;
+	case NFTNL_OBJ_LIMIT_UNIT:
+		*data_len = sizeof(limit->unit);
+		return &limit->unit;
+	case NFTNL_OBJ_LIMIT_BURST:
+		*data_len = sizeof(limit->burst);
+		return &limit->burst;
+	case NFTNL_OBJ_LIMIT_TYPE:
+		*data_len = sizeof(limit->type);
+		return &limit->type;
+	case NFTNL_OBJ_LIMIT_FLAGS:
+		*data_len = sizeof(limit->flags);
+		return &limit->flags;
+	}
+	return NULL;
+}
+
+static int nftnl_obj_limit_cb(const struct nlattr *attr, void *data)
+{
+	int type = mnl_attr_get_type(attr);
+	const struct nlattr **tb = data;
+
+	if (mnl_attr_type_valid(attr, NFTA_LIMIT_MAX) < 0)
+		return MNL_CB_OK;
+
+	switch (type) {
+	case NFTA_LIMIT_RATE:
+	case NFTA_LIMIT_UNIT:
+		if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0)
+			abi_breakage();
+		break;
+	case NFTA_LIMIT_BURST:
+	case NFTA_LIMIT_TYPE:
+	case NFTA_LIMIT_FLAGS:
+		if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
+			abi_breakage();
+		break;
+	}
+
+	tb[type] = attr;
+	return MNL_CB_OK;
+}
+
+static void nftnl_obj_limit_build(struct nlmsghdr *nlh,
+				  const struct nftnl_obj *e)
+{
+	struct nftnl_obj_limit *limit = nftnl_obj_data(e);
+
+	if (e->flags & (1 << NFTNL_OBJ_LIMIT_RATE))
+		mnl_attr_put_u64(nlh, NFTA_LIMIT_RATE, htobe64(limit->rate));
+	if (e->flags & (1 << NFTNL_OBJ_LIMIT_UNIT))
+		mnl_attr_put_u64(nlh, NFTA_LIMIT_UNIT, htobe64(limit->unit));
+	if (e->flags & (1 << NFTNL_OBJ_LIMIT_BURST))
+		mnl_attr_put_u32(nlh, NFTA_LIMIT_BURST, htonl(limit->burst));
+	if (e->flags & (1 << NFTNL_OBJ_LIMIT_TYPE))
+		mnl_attr_put_u32(nlh, NFTA_LIMIT_TYPE, htonl(limit->type));
+	if (e->flags & (1 << NFTNL_OBJ_LIMIT_FLAGS))
+		mnl_attr_put_u32(nlh, NFTA_LIMIT_FLAGS, htonl(limit->flags));
+}
+
+static int nftnl_obj_limit_parse(struct nftnl_obj *e, struct nlattr *attr)
+{
+	struct nftnl_obj_limit *limit = nftnl_obj_data(e);
+	struct nlattr *tb[NFTA_LIMIT_MAX + 1] = {};
+
+	if (mnl_attr_parse_nested(attr, nftnl_obj_limit_cb, tb) < 0)
+		return -1;
+
+	if (tb[NFTA_LIMIT_RATE]) {
+		limit->rate = be64toh(mnl_attr_get_u64(tb[NFTA_LIMIT_RATE]));
+		e->flags |= (1 << NFTNL_OBJ_LIMIT_RATE);
+	}
+	if (tb[NFTA_LIMIT_UNIT]) {
+		limit->unit = be64toh(mnl_attr_get_u64(tb[NFTA_LIMIT_UNIT]));
+		e->flags |= (1 << NFTNL_OBJ_LIMIT_UNIT);
+	}
+	if (tb[NFTA_LIMIT_BURST]) {
+		limit->burst = ntohl(mnl_attr_get_u32(tb[NFTA_LIMIT_BURST]));
+		e->flags |= (1 << NFTNL_OBJ_LIMIT_BURST);
+	}
+	if (tb[NFTA_LIMIT_TYPE]) {
+		limit->type = ntohl(mnl_attr_get_u32(tb[NFTA_LIMIT_TYPE]));
+		e->flags |= (1 << NFTNL_OBJ_LIMIT_TYPE);
+	}
+	if (tb[NFTA_LIMIT_FLAGS]) {
+		limit->flags = ntohl(mnl_attr_get_u32(tb[NFTA_LIMIT_FLAGS]));
+		e->flags |= (1 << NFTNL_OBJ_LIMIT_FLAGS);
+	}
+
+	return 0;
+}
+
+static int nftnl_obj_limit_snprintf(char *buf, size_t len,
+				    uint32_t flags,
+				    const struct nftnl_obj *e)
+{
+	struct nftnl_obj_limit *limit = nftnl_obj_data(e);
+
+	return snprintf(buf, len, "rate %"PRIu64" unit %"PRIu64" burst %u "
+			"type %u flags %u ", limit->rate, limit->unit,
+			limit->burst, limit->type, limit->flags);
+}
+
+struct obj_ops obj_ops_limit = {
+	.name		= "limit",
+	.type		= NFT_OBJECT_LIMIT,
+	.alloc_len	= sizeof(struct nftnl_obj_limit),
+	.max_attr	= NFTA_LIMIT_MAX,
+	.set		= nftnl_obj_limit_set,
+	.get		= nftnl_obj_limit_get,
+	.parse		= nftnl_obj_limit_parse,
+	.build		= nftnl_obj_limit_build,
+	.output		= nftnl_obj_limit_snprintf,
+};