nexmon – Rev 1
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/*
* lib/genl/family.c Generic Netlink Family
*
* 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) 2003-2006 Thomas Graf <tgraf@suug.ch>
*/
/**
* @ingroup genl
* @defgroup genl_family Generic Netlink Family
* @brief
*
* @{
*/
#include <netlink-generic.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/utils.h>
/** @cond SKIP */
#define FAMILY_ATTR_ID 0x01
#define FAMILY_ATTR_NAME 0x02
#define FAMILY_ATTR_VERSION 0x04
#define FAMILY_ATTR_HDRSIZE 0x08
#define FAMILY_ATTR_MAXATTR 0x10
#define FAMILY_ATTR_OPS 0x20
struct nl_object_ops genl_family_ops;
/** @endcond */
static void family_constructor(struct nl_object *c)
{
struct genl_family *family = (struct genl_family *) c;
nl_init_list_head(&family->gf_ops);
}
static void family_free_data(struct nl_object *c)
{
struct genl_family *family = (struct genl_family *) c;
struct genl_family_op *ops, *tmp;
if (family == NULL)
return;
nl_list_for_each_entry_safe(ops, tmp, &family->gf_ops, o_list) {
nl_list_del(&ops->o_list);
free(ops);
}
}
static int family_clone(struct nl_object *_dst, struct nl_object *_src)
{
struct genl_family *dst = nl_object_priv(_dst);
struct genl_family *src = nl_object_priv(_src);
struct genl_family_op *ops;
int err;
nl_list_for_each_entry(ops, &src->gf_ops, o_list) {
err = genl_family_add_op(dst, ops->o_id, ops->o_flags);
if (err < 0)
return err;
}
return 0;
}
static void family_dump_line(struct nl_object *obj, struct nl_dump_params *p)
{
struct genl_family *family = (struct genl_family *) obj;
nl_dump(p, "0x%04x %s version %u\n",
family->gf_id, family->gf_name, family->gf_version);
}
static struct trans_tbl ops_flags[] = {
__ADD(GENL_ADMIN_PERM, admin-perm)
__ADD(GENL_CMD_CAP_DO, has-doit)
__ADD(GENL_CMD_CAP_DUMP, has-dump)
__ADD(GENL_CMD_CAP_HASPOL, has-policy)
};
static char *ops_flags2str(int flags, char *buf, size_t len)
{
return __flags2str(flags, buf, len, ops_flags, ARRAY_SIZE(ops_flags));
}
static void family_dump_details(struct nl_object *obj, struct nl_dump_params *p)
{
struct genl_family *family = (struct genl_family *) obj;
family_dump_line(obj, p);
nl_dump_line(p, " hdrsize %u maxattr %u\n",
family->gf_hdrsize, family->gf_maxattr);
if (family->ce_mask & FAMILY_ATTR_OPS) {
struct genl_family_op *op;
char buf[64];
nl_list_for_each_entry(op, &family->gf_ops, o_list) {
ops_flags2str(op->o_flags, buf, sizeof(buf));
genl_op2name(family->gf_id, op->o_id, buf, sizeof(buf));
nl_dump_line(p, " op %s (0x%02x)", buf, op->o_id);
if (op->o_flags)
nl_dump(p, " <%s>",
ops_flags2str(op->o_flags, buf,
sizeof(buf)));
nl_dump(p, "\n");
}
}
}
static void family_dump_stats(struct nl_object *obj, struct nl_dump_params *p)
{
family_dump_details(obj, p);
}
static int family_compare(struct nl_object *_a, struct nl_object *_b,
uint32_t attrs, int flags)
{
struct genl_family *a = (struct genl_family *) _a;
struct genl_family *b = (struct genl_family *) _b;
int diff = 0;
#define FAM_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, FAMILY_ATTR_##ATTR, a, b, EXPR)
diff |= FAM_DIFF(ID, a->gf_id != b->gf_id);
diff |= FAM_DIFF(VERSION, a->gf_version != b->gf_version);
diff |= FAM_DIFF(HDRSIZE, a->gf_hdrsize != b->gf_hdrsize);
diff |= FAM_DIFF(MAXATTR, a->gf_maxattr != b->gf_maxattr);
diff |= FAM_DIFF(NAME, strcmp(a->gf_name, b->gf_name));
#undef FAM_DIFF
return diff;
}
/**
* @name Family Object
* @{
*/
struct genl_family *genl_family_alloc(void)
{
return (struct genl_family *) nl_object_alloc(&genl_family_ops);
}
void genl_family_put(struct genl_family *family)
{
nl_object_put((struct nl_object *) family);
}
/** @} */
/**
* @name Attributes
* @{
*/
unsigned int genl_family_get_id(struct genl_family *family)
{
if (family->ce_mask & FAMILY_ATTR_ID)
return family->gf_id;
else
return GENL_ID_GENERATE;
}
void genl_family_set_id(struct genl_family *family, unsigned int id)
{
family->gf_id = id;
family->ce_mask |= FAMILY_ATTR_ID;
}
char *genl_family_get_name(struct genl_family *family)
{
if (family->ce_mask & FAMILY_ATTR_NAME)
return family->gf_name;
else
return NULL;
}
void genl_family_set_name(struct genl_family *family, const char *name)
{
strncpy(family->gf_name, name, GENL_NAMSIZ-1);
family->ce_mask |= FAMILY_ATTR_NAME;
}
uint8_t genl_family_get_version(struct genl_family *family)
{
if (family->ce_mask & FAMILY_ATTR_VERSION)
return family->gf_version;
else
return 0;
}
void genl_family_set_version(struct genl_family *family, uint8_t version)
{
family->gf_version = version;
family->ce_mask |= FAMILY_ATTR_VERSION;
}
uint32_t genl_family_get_hdrsize(struct genl_family *family)
{
if (family->ce_mask & FAMILY_ATTR_HDRSIZE)
return family->gf_hdrsize;
else
return 0;
}
void genl_family_set_hdrsize(struct genl_family *family, uint32_t hdrsize)
{
family->gf_hdrsize = hdrsize;
family->ce_mask |= FAMILY_ATTR_HDRSIZE;
}
uint32_t genl_family_get_maxattr(struct genl_family *family)
{
if (family->ce_mask & FAMILY_ATTR_MAXATTR)
return family->gf_maxattr;
else
return family->gf_maxattr;
}
void genl_family_set_maxattr(struct genl_family *family, uint32_t maxattr)
{
family->gf_maxattr = maxattr;
family->ce_mask |= FAMILY_ATTR_MAXATTR;
}
int genl_family_add_op(struct genl_family *family, int id, int flags)
{
struct genl_family_op *op;
op = calloc(1, sizeof(*op));
if (op == NULL)
return -NLE_NOMEM;
op->o_id = id;
op->o_flags = flags;
nl_list_add_tail(&op->o_list, &family->gf_ops);
family->ce_mask |= FAMILY_ATTR_OPS;
return 0;
}
/** @} */
/** @cond SKIP */
struct nl_object_ops genl_family_ops = {
.oo_name = "genl/family",
.oo_size = sizeof(struct genl_family),
.oo_constructor = family_constructor,
.oo_free_data = family_free_data,
.oo_clone = family_clone,
.oo_dump = {
[NL_DUMP_LINE] = family_dump_line,
[NL_DUMP_DETAILS] = family_dump_details,
[NL_DUMP_STATS] = family_dump_stats,
},
.oo_compare = family_compare,
.oo_id_attrs = FAMILY_ATTR_ID,
};
/** @endcond */
/** @} */