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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <sys/types.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <stropts.h>
#include <stdlib.h>
#include <errno.h>
#include <libdevinfo.h>
#include <libdlpi.h>
#include <libdladm.h>
#include <sys/dld.h>
#include <net/if.h>
typedef struct dladm_dev {
char dd_name[IFNAMSIZ];
struct dladm_dev *dd_next;
} dladm_dev_t;
typedef struct dladm_walk {
dladm_dev_t *dw_dev_list;
} dladm_walk_t;
/*
* Issue an ioctl to the specified file descriptor attached to the
* DLD control driver interface.
*/
static int
i_dladm_ioctl(int fd, int ic_cmd, void *ic_dp, int ic_len)
{
struct strioctl iocb;
iocb.ic_cmd = ic_cmd;
iocb.ic_timout = 0;
iocb.ic_len = ic_len;
iocb.ic_dp = (char *)ic_dp;
return (ioctl(fd, I_STR, &iocb));
}
/*
* Return the attributes of the specified datalink from the DLD driver.
*/
static int
i_dladm_info(int fd, const char *name, dladm_attr_t *dap)
{
dld_ioc_attr_t dia;
if (strlen(name) >= IFNAMSIZ) {
errno = EINVAL;
return (-1);
}
(void) strlcpy(dia.dia_name, name, IFNAMSIZ);
if (i_dladm_ioctl(fd, DLDIOCATTR, &dia, sizeof (dia)) < 0)
return (-1);
(void) strlcpy(dap->da_dev, dia.dia_dev, MAXNAMELEN);
dap->da_max_sdu = dia.dia_max_sdu;
dap->da_vid = dia.dia_vid;
return (0);
}
/*
* Adds a datalink to the array corresponding to arg.
*/
static void
i_dladm_nt_net_add(void *arg, char *name)
{
dladm_walk_t *dwp = arg;
dladm_dev_t *ddp = dwp->dw_dev_list;
dladm_dev_t **lastp = &dwp->dw_dev_list;
while (ddp) {
/*
* Skip duplicates.
*/
if (strcmp(ddp->dd_name, name) == 0)
return;
lastp = &ddp->dd_next;
ddp = ddp->dd_next;
}
if ((ddp = malloc(sizeof (*ddp))) == NULL)
return;
(void) strlcpy(ddp->dd_name, name, IFNAMSIZ);
ddp->dd_next = NULL;
*lastp = ddp;
}
/*
* Walker callback invoked for each DDI_NT_NET node.
*/
static int
i_dladm_nt_net_walk(di_node_t node, di_minor_t minor, void *arg)
{
dl_info_ack_t dlia;
char name[IFNAMSIZ];
int fd;
char *provider;
uint_t ppa;
provider = di_minor_name(minor);
if ((fd = dlpi_open(provider)) < 0)
return (DI_WALK_CONTINUE);
if (dlpi_info(fd, -1, &dlia, NULL, NULL, NULL, NULL, NULL, NULL) < 0) {
(void) dlpi_close(fd);
return (DI_WALK_CONTINUE);
}
if (dlia.dl_provider_style == DL_STYLE1) {
i_dladm_nt_net_add(arg, provider);
(void) dlpi_close(fd);
return (DI_WALK_CONTINUE);
}
ppa = di_instance(node);
if (dlpi_attach(fd, -1, ppa) < 0) {
(void) dlpi_close(fd);
return (DI_WALK_CONTINUE);
}
(void) snprintf(name, IFNAMSIZ - 1, "%s%d", provider, ppa);
i_dladm_nt_net_add(arg, name);
(void) dlpi_close(fd);
return (DI_WALK_CONTINUE);
}
/*
* Invoke the specified callback function for each active DDI_NT_NET
* node.
*/
int
dladm_walk(void (*fn)(void *, const char *), void *arg)
{
di_node_t root;
dladm_walk_t dw;
dladm_dev_t *ddp, *last_ddp;
if ((root = di_init("/", DINFOCACHE)) == DI_NODE_NIL) {
errno = EFAULT;
return (-1);
}
dw.dw_dev_list = NULL;
(void) di_walk_minor(root, DDI_NT_NET, DI_CHECK_ALIAS, &dw,
i_dladm_nt_net_walk);
di_fini(root);
ddp = dw.dw_dev_list;
while (ddp) {
fn(arg, ddp->dd_name);
(void) dladm_walk_vlan(fn, arg, ddp->dd_name);
last_ddp = ddp;
ddp = ddp->dd_next;
free(last_ddp);
}
return (0);
}
/*
* Invoke the specified callback function for each vlan managed by dld
*/
int
dladm_walk_vlan(void (*fn)(void *, const char *), void *arg, const char *name)
{
int fd, bufsize, i;
int nvlan = 4094;
dld_ioc_vlan_t *iocp = NULL;
dld_vlan_info_t *dvip;
if ((fd = open(DLD_CONTROL_DEV, O_RDWR)) < 0)
return (-1);
bufsize = sizeof (dld_ioc_vlan_t) + nvlan * sizeof (dld_vlan_info_t);
if ((iocp = (dld_ioc_vlan_t *)calloc(1, bufsize)) == NULL)
return (-1);
(void) strlcpy((char *)iocp->div_name, name, IFNAMSIZ);
if (i_dladm_ioctl(fd, DLDIOCVLAN, iocp, bufsize) == 0) {
dvip = (dld_vlan_info_t *)(iocp + 1);
for (i = 0; i < iocp->div_count; i++)
(*fn)(arg, dvip[i].dvi_name);
}
/*
* Note: Callers of dladm_walk_vlan() ignore the return
* value of this routine. So ignoring ioctl failure case
* and just returning 0.
*/
free(iocp);
(void) close(fd);
return (0);
}
/*
* Returns the current attributes of the specified datalink.
*/
int
dladm_info(const char *name, dladm_attr_t *dap)
{
int fd;
if ((fd = open(DLD_CONTROL_DEV, O_RDWR)) < 0)
return (-1);
if (i_dladm_info(fd, name, dap) < 0)
goto failed;
(void) close(fd);
return (0);
failed:
(void) close(fd);
return (-1);
}
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