path: root/net/devlink/dpipe.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
 */

#include "devl_internal.h"

static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
	{
		.name = "destination mac",
		.id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
		.bitwidth = 48,
	},
};

struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
	.name = "ethernet",
	.id = DEVLINK_DPIPE_HEADER_ETHERNET,
	.fields = devlink_dpipe_fields_ethernet,
	.fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
	.global = true,
};
EXPORT_SYMBOL_GPL(devlink_dpipe_header_ethernet);

static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
	{
		.name = "destination ip",
		.id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
		.bitwidth = 32,
	},
};

struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
	.name = "ipv4",
	.id = DEVLINK_DPIPE_HEADER_IPV4,
	.fields = devlink_dpipe_fields_ipv4,
	.fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
	.global = true,
};
EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv4);

static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
	{
		.name = "destination ip",
		.id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
		.bitwidth = 128,
	},
};

struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
	.name = "ipv6",
	.id = DEVLINK_DPIPE_HEADER_IPV6,
	.fields = devlink_dpipe_fields_ipv6,
	.fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
	.global = true,
};
EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv6);

int devlink_dpipe_match_put(struct sk_buff *skb,
			    struct devlink_dpipe_match *match)
{
	struct devlink_dpipe_header *header = match->header;
	struct devlink_dpipe_field *field = &header->fields[match->field_id];
	struct nlattr *match_attr;

	match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
	if (!match_attr)
		return -EMSGSIZE;

	if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
	    nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
	    nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
	    nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
	    nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
		goto nla_put_failure;

	nla_nest_end(skb, match_attr);
	return 0;

nla_put_failure:
	nla_nest_cancel(skb, match_attr);
	return -EMSGSIZE;
}
EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);

static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
				     struct sk_buff *skb)
{
	struct nlattr *matches_attr;

	matches_attr = nla_nest_start_noflag(skb,
					     DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
	if (!matches_attr)
		return -EMSGSIZE;

	if (table->table_ops->matches_dump(table->priv, skb))
		goto nla_put_failure;

	nla_nest_end(skb, matches_attr);
	return 0;

nla_put_failure:
	nla_nest_cancel(skb, matches_attr);
	return -EMSGSIZE;
}

int devlink_dpipe_action_put(struct sk_buff *skb,
			     struct devlink_dpipe_action *action)
{
	struct devlink_dpipe_header *header = action->header;
	struct devlink_dpipe_field *field = &header->fields[action->field_id];
	struct nlattr *action_attr;

	action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
	if (!action_attr)
		return -EMSGSIZE;

	if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
	    nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
	    nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
	    nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
	    nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
		goto nla_put_failure;

	nla_nest_end(skb, action_attr);
	return 0;

nla_put_failure:
	nla_nest_cancel(skb, action_attr);
	return -EMSGSIZE;
}
EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);

static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
				     struct sk_buff *skb)
{
	struct nlattr *actions_attr;

	actions_attr = nla_nest_start_noflag(skb,
					     DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
	if (!actions_attr)
		return -EMSGSIZE;

	if (table->table_ops->actions_dump(table->priv, skb))
		goto nla_put_failure;

	nla_nest_end(skb, actions_attr);
	return