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/*
* Copyright (c) 2006 Dell, Inc.
* by Matt Domsch <Matt_Domsch@dell.com>
* Licensed under the GNU General Public license, version 2.
*/
#define _GNU_SOURCE
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <getopt.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <linux/sockios.h>
#include <unistd.h>
#include <net/if.h>
#include <net/if_arp.h>
#include "ethtool-util.h"
#include "pci.h"
#include "eths.h"
#include "state.h"
/* Display an Ethernet address in readable format. */
char *pr_ether(char *buf, const int size, const unsigned char *s)
{
snprintf(buf, size, "%02X:%02X:%02X:%02X:%02X:%02X",
(s[0] & 0377), (s[1] & 0377), (s[2] & 0377),
(s[3] & 0377), (s[4] & 0377), (s[5] & 0377)
);
return (buf);
}
static int eths_get_hwaddr(const char *devname, unsigned char *buf, int size, int *type)
{
int fd, err;
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, devname, sizeof(ifr.ifr_name));
/* Open control socket. */
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
perror("Cannot get control socket");
return 1;
}
err = ioctl(fd, SIOCGIFHWADDR, &ifr);
if (!err) {
memcpy(buf, ifr.ifr_hwaddr.sa_data, min(size, sizeof(ifr.ifr_hwaddr.sa_data)));
*type = ifr.ifr_hwaddr.sa_family;
}
close(fd);
return err;
}
static int eths_get_info(const char *devname, struct ethtool_drvinfo *drvinfo)
{
int fd, err;
struct ifreq ifr;
/* Setup our control structures. */
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, devname, sizeof(ifr.ifr_name));
/* Open control socket. */
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
perror("Cannot get control socket");
return 1;
}
drvinfo->cmd = ETHTOOL_GDRVINFO;
ifr.ifr_data = (caddr_t)drvinfo;
err = ioctl(fd, SIOCETHTOOL, &ifr);
close(fd);
return err;
}
static int eths_get_permaddr(const char *devname, unsigned char *buf, int size)
{
int fd, err;
struct ifreq ifr;
struct ethtool_perm_addr *permaddr;
int s = sizeof(*permaddr) + MAX_ADDR_LEN;
permaddr = malloc(s);
if (!permaddr)
return 1;
memset(permaddr, 0, s);
/* Setup our control structures. */
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, devname, sizeof(ifr.ifr_name));
/* Open control socket. */
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
perror("Cannot get control socket");
return 1;
}
permaddr->cmd = ETHTOOL_GPERMADDR;
permaddr->size = MAX_ADDR_LEN;
ifr.ifr_data = (caddr_t)permaddr;
err = ioctl(fd, SIOCETHTOOL, &ifr);
if (err < 0) {
close(fd);
return err;
}
memcpy(buf, permaddr->data, min(permaddr->size, size));
free(permaddr);
close(fd);
return err;
}
static void fill_eth_dev(struct network_device *dev)
{
int rc;
eths_get_hwaddr(dev->kernel_name, dev->dev_addr, sizeof(dev->dev_addr), &dev->arphrd_type);
eths_get_permaddr(dev->kernel_name, dev->perm_addr, sizeof(dev->perm_addr));
rc = eths_get_info(dev->kernel_name, &dev->drvinfo);
if (rc == 0)
dev->drvinfo_valid = 1;
}
void free_eths(struct libbiosdevname_state *state)
{
struct network_device *pos, *next;
list_for_each_entry_safe(pos, next, &state->network_devices, node) {
list_del(&pos->node);
free(pos);
}
}
/* read_proc.c */
extern int get_interfaces(struct libbiosdevname_state *state);
void get_eths(struct libbiosdevname_state *state)
{
struct network_device *pos;
get_interfaces(state);
list_for_each_entry(pos, &state->network_devices, node) {
fill_eth_dev(pos);
}
}
int zero_mac(const void *addr)
{
char zero_mac[MAX_ADDR_LEN];
memset(zero_mac, 0, sizeof(zero_mac));
return !memcmp(zero_mac, addr, sizeof(zero_mac));
}
int unparse_network_device(char *buf, const int size, struct network_device *dev)
{
char buffer[40];
char *s = buf;
s += snprintf(s, size-(s-buf), "Kernel name: %s\n", dev->kernel_name);
if (!zero_mac(dev->perm_addr))
s += snprintf(s, size-(s-buf), "Permanent MAC: %s\n", pr_ether(buffer, sizeof(buffer), dev->perm_addr));
s += snprintf(s, size-(s-buf), "Assigned MAC : %s\n", pr_ether(buffer, sizeof(buffer), dev->dev_addr));
if (drvinfo_valid(dev)) {
s += snprintf(s, size-(s-buf), "Driver: %s\n", dev->drvinfo.driver);
s += snprintf(s, size-(s-buf), "Driver version: %s\n", dev->drvinfo.version);
s += snprintf(s, size-(s-buf), "Firmware version: %s\n", dev->drvinfo.fw_version);
s += snprintf(s, size-(s-buf), "Bus Info: %s\n", dev->drvinfo.bus_info);
}
return (s-buf);
};
struct network_device * find_net_device_by_bus_info(struct libbiosdevname_state *state,
const char *bus_info)
{
struct network_device *n;
list_for_each_entry(n, &state->network_devices, node) {
if (!strncmp(n->drvinfo.bus_info, bus_info, sizeof(n->drvinfo.bus_info)))
return n;
}
return NULL;
}
int is_ethernet(struct network_device *dev)
{
int i;
int rc = 0;
/* FIXME: /sys/class/net/$kernel_name/device will be a symlink if there's underlying hardware,
* or not exist if it's virtual. Try using that if this isn't good enough already.
*/
/* No bus means not visible to BIOS */
if (strncmp("N/A", dev->drvinfo.bus_info, sizeof(dev->drvinfo.bus_info)) == 0)
goto out;
const char *nonethernet_drivers[] = {
"bonding",
"bridge",
"openvswitch",
"tun",
};
for (i=0; i<sizeof(nonethernet_drivers)/sizeof(nonethernet_drivers[0]); i++) {
if (strncmp(dev->drvinfo.driver, nonethernet_drivers[i], sizeof(dev->drvinfo.driver)) == 0)
goto out;
}
rc = dev->arphrd_type == ARPHRD_ETHER;
out:
return rc;
}
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