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/*
* lib/route/link/bridge.c AF_BRIDGE link oeprations
*
* 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) 2010 Thomas Graf <tgraf@suug.ch>
*/
#include <netlink-local.h>
#include <netlink/netlink.h>
#include <netlink/attr.h>
#include <netlink/route/rtnl.h>
#include <netlink/route/link/api.h>
#define BRIDGE_ATTR_PORT_STATE 0x0001
struct bridge_data
{
uint8_t b_port_state;
uint32_t ce_mask; /* HACK to support attr macros */
};
static void *bridge_alloc(struct rtnl_link *link)
{
return calloc(1, sizeof(struct bridge_data));
}
static void *bridge_clone(struct rtnl_link *link, void *data)
{
struct bridge_data *bd;
if ((bd = bridge_alloc(link)))
memcpy(bd, data, sizeof(*bd));
return bd;
}
static void bridge_free(struct rtnl_link *link, void *data)
{
free(data);
}
static int bridge_parse_protinfo(struct rtnl_link *link, struct nlattr *attr,
void *data)
{
struct bridge_data *bd = data;
bd->b_port_state = nla_get_u8(attr);
bd->ce_mask |= BRIDGE_ATTR_PORT_STATE;
return 0;
}
static void bridge_dump_details(struct rtnl_link *link,
struct nl_dump_params *p, void *data)
{
struct bridge_data *bd = data;
if (bd->ce_mask & BRIDGE_ATTR_PORT_STATE)
nl_dump(p, "port-state %u ", bd->b_port_state);
}
static int bridge_compare(struct rtnl_link *_a, struct rtnl_link *_b,
int family, uint32_t attrs, int flags)
{
struct bridge_data *a = (struct bridge_data *)_a->l_af_data;
struct bridge_data *b = (struct bridge_data *)_b->l_af_data;
int diff = 0;
#define BRIDGE_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, BRIDGE_ATTR_##ATTR, a, b, EXPR)
diff |= BRIDGE_DIFF(PORT_STATE, a->b_port_state != b->b_port_state);
return diff;
#undef BRIDGE_DIFF
}
static const struct nla_policy protinfo_policy = {
.type = NLA_U8,
};
static struct rtnl_link_af_ops bridge_ops = {
.ao_family = AF_BRIDGE,
.ao_alloc = &bridge_alloc,
.ao_clone = &bridge_clone,
.ao_free = &bridge_free,
.ao_parse_protinfo = &bridge_parse_protinfo,
.ao_dump[NL_DUMP_DETAILS] = &bridge_dump_details,
.ao_protinfo_policy = &protinfo_policy,
.ao_compare = &bridge_compare,
};
static void __init bridge_init(void)
{
rtnl_link_af_register(&bridge_ops);
}
static void __exit bridge_exit(void)
{
rtnl_link_af_unregister(&bridge_ops);
}
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