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/*
* lib/route/cls/ematch/container.c Container Ematch
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version 2.1
* of the License.
*
* Copyright (c) 2008-2010 Thomas Graf <tgraf@suug.ch>
*/
#include <netlink-local.h>
#include <netlink-tc.h>
#include <netlink/netlink.h>
#include <netlink/route/cls/ematch.h>
static int container_parse(struct rtnl_ematch *e, void *data, size_t len __attribute__((unused)))
{
/*
The kernel may provide more than 4 bytes of data in the future and we want
older libnl versions to be ok with that. We want interfaces to be growable
so we only ever enforce a minimum data length and copy as much as we are
aware of. Thomas Graf.
*/
memcpy(e->e_data, data, sizeof(uint32_t));
return 0;
}
static int container_fill(struct rtnl_ematch *e, struct nl_msg *msg)
{
return nlmsg_append(msg, e->e_data, sizeof(uint32_t), 0);
}
static struct rtnl_ematch_ops container_ops = {
.eo_kind = TCF_EM_CONTAINER,
.eo_name = "container",
.eo_minlen = sizeof(uint32_t),
.eo_datalen = sizeof(uint32_t),
.eo_parse = container_parse,
.eo_fill = container_fill,
};
static void __init container_init(void)
{
rtnl_ematch_register(&container_ops);
}
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