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nameif: add matching by phy_address=NUM; extend help text

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function                                             old     new   delta
nameif_main                                          618     686     +68
packed_usage                                       28095   28149     +54
prepend_new_eth_table                                295     338     +43
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(add/remove: 0/0 grow/shrink: 3/0 up/down: 165/0)             Total: 165 bytes

Signed-off-by: Phil Sutter <phil.sutter@viprinet.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Phil Sutter 2011-03-06 19:42:51 +01:00 committed by Denys Vlasenko
parent 2adc0e6d8b
commit 293a8f250d
3 changed files with 94 additions and 44 deletions
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14
include/usage.src.h
View File

@ -2546,20 +2546,6 @@ INSERT
"ras3 reset retension rewind rewoffline seek setblk setdensity\n" \
"setpart tell unload unlock weof wset" \
#define nameif_trivial_usage \
"[-s] [-c FILE] [{IFNAME MACADDR}]"
#define nameif_full_usage "\n\n" \
"Rename network interface while it in the down state\n" \
"\nOptions:" \
"\n -c FILE Use configuration file (default: /etc/mactab)" \
"\n -s Use syslog (LOCAL0 facility)" \
"\n IFNAME MACADDR new_interface_name interface_mac_address" \
#define nameif_example_usage \
"$ nameif -s dmz0 00:A0:C9:8C:F6:3F\n" \
" or\n" \
"$ nameif -c /etc/my_mactab_file\n" \
#define nohup_trivial_usage \
"PROG ARGS"
#define nohup_full_usage "\n\n" \

29
networking/Config.src
View File

@ -612,35 +612,6 @@ config FEATURE_IPCALC_LONG_OPTIONS
help
Support long options for the ipcalc applet.
config NAMEIF
bool "nameif"
default y
select PLATFORM_LINUX
select FEATURE_SYSLOG
help
nameif is used to rename network interface by its MAC address.
Renamed interfaces MUST be in the down state.
It is possible to use a file (default: /etc/mactab)
with list of new interface names and MACs.
Maximum interface name length: IFNAMSIZ = 16
File fields are separated by space or tab.
File format:
# Comment
new_interface_name XX:XX:XX:XX:XX:XX
config FEATURE_NAMEIF_EXTENDED
bool "Extended nameif"
default y
depends on NAMEIF
help
This extends the nameif syntax to support the bus_info and driver
checks. The syntax is compatible to the normal nameif.
File format:
new_interface_name driver=asix bus=usb-0000:00:08.2-3
new_interface_name bus=usb-0000:00:08.2-3 00:80:C8:38:91:B5
new_interface_name mac=00:80:C8:38:91:B5
new_interface_name 00:80:C8:38:91:B5
config NETSTAT
bool "netstat"
default y

95
networking/nameif.c
View File

@ -10,6 +10,66 @@
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
//config:config NAMEIF
//config: bool "nameif"
//config: default y
//config: select PLATFORM_LINUX
//config: select FEATURE_SYSLOG
//config: help
//config: nameif is used to rename network interface by its MAC address.
//config: Renamed interfaces MUST be in the down state.
//config: It is possible to use a file (default: /etc/mactab)
//config: with list of new interface names and MACs.
//config: Maximum interface name length: IFNAMSIZ = 16
//config: File fields are separated by space or tab.
//config: File format:
//config: # Comment
//config: new_interface_name XX:XX:XX:XX:XX:XX
//config:
//config:config FEATURE_NAMEIF_EXTENDED
//config: bool "Extended nameif"
//config: default y
//config: depends on NAMEIF
//config: help
//config: This extends the nameif syntax to support the bus_info, driver,
//config: phyaddr selectors. The syntax is compatible to the normal nameif.
//config: File format:
//config: new_interface_name driver=asix bus=usb-0000:00:08.2-3
//config: new_interface_name bus=usb-0000:00:08.2-3 00:80:C8:38:91:B5
//config: new_interface_name phy_address=2 00:80:C8:38:91:B5
//config: new_interface_name mac=00:80:C8:38:91:B5
//config: new_interface_name 00:80:C8:38:91:B5
//usage:#define nameif_trivial_usage
//usage: IF_NOT_FEATURE_NAMEIF_EXTENDED(
//usage: "[-s] [-c FILE] [IFNAME HWADDR]..."
//usage: )
//usage: IF_FEATURE_NAMEIF_EXTENDED(
//usage: "[-s] [-c FILE] [IFNAME SELECTOR]..."
//usage: )
//usage:#define nameif_full_usage "\n\n"
//usage: "Rename network interface while it in the down state."
//usage: IF_NOT_FEATURE_NAMEIF_EXTENDED(
//usage: "\nThe device with address HWADDR is renamed to IFACE."
//usage: )
//usage: IF_FEATURE_NAMEIF_EXTENDED(
//usage: "\nThe device matched by SELECTOR is renamed to IFACE."
//usage: "\nSELECTOR can be a combination of:"
//usage: "\n driver=STRING"
//usage: "\n bus=STRING"
//usage: "\n phy_address=NUM"
//usage: "\n [mac=]XX:XX:XX:XX:XX:XX"
//usage: )
//usage: "\n"
//usage: "\nOptions:"
//usage: "\n -c FILE Configuration file (default: /etc/mactab)"
//usage: "\n -s Log to syslog"
//usage:
//usage:#define nameif_example_usage
//usage: "$ nameif -s dmz0 00:A0:C9:8C:F6:3F\n"
//usage: " or\n"
//usage: "$ nameif -c /etc/my_mactab_file\n"
#include "libbb.h"
#include <syslog.h>
#include <net/if.h>
@ -38,6 +98,7 @@ typedef struct ethtable_s {
#if ENABLE_FEATURE_NAMEIF_EXTENDED
char *bus_info;
char *driver;
int32_t phy_address;
#endif
} ethtable_t;
@ -59,6 +120,25 @@ struct ethtool_drvinfo {
uint32_t eedump_len; /* Size of data from ETHTOOL_GEEPROM (bytes) */
uint32_t regdump_len; /* Size of data from ETHTOOL_GREGS (bytes) */
};
struct ethtool_cmd {
__u32 cmd;
__u32 supported; /* Features this interface supports */
__u32 advertising; /* Features this interface advertises */
__u16 speed; /* The forced speed, 10Mb, 100Mb, gigabit */
__u8 duplex; /* Duplex, half or full */
__u8 port; /* Which connector port */
__u8 phy_address;
__u8 transceiver; /* Which transceiver to use */
__u8 autoneg; /* Enable or disable autonegotiation */
__u32 maxtxpkt; /* Tx pkts before generating tx int */
__u32 maxrxpkt; /* Rx pkts before generating rx int */
__u16 speed_hi;
__u16 reserved2;
__u32 reserved[3];
};
#define ETHTOOL_GSET 0x00000001 /* Get settings. */
#define ETHTOOL_GDRVINFO 0x00000003 /* Get driver info. */
#endif
@ -74,6 +154,7 @@ static void nameif_parse_selector(ethtable_t *ch, char *selector)
#endif
selector = skip_whitespace(selector);
#if ENABLE_FEATURE_NAMEIF_EXTENDED
ch->phy_address = -1;
if (*selector == '\0')
break;
/* Search for the end .... */
@ -87,6 +168,9 @@ static void nameif_parse_selector(ethtable_t *ch, char *selector)
} else if (strncmp(selector, "driver=", 7) == 0) {
ch->driver = xstrdup(selector + 7);
found_selector++;
} else if (strncmp(selector, "phyaddr=", 8) == 0) {
ch->phy_address = xatoi_positive(selector + 8);
found_selector++;
} else {
#endif
lmac = xmalloc(ETH_ALEN);
@ -171,6 +255,7 @@ int nameif_main(int argc UNUSED_PARAM, char **argv)
struct ifreq ifr;
#if ENABLE_FEATURE_NAMEIF_EXTENDED
struct ethtool_drvinfo drvinfo;
struct ethtool_cmd eth_settings;
#endif
if (parser->lineno <= 2)
continue; /* Skip the first two lines */
@ -180,8 +265,14 @@ int nameif_main(int argc UNUSED_PARAM, char **argv)
strncpy_IFNAMSIZ(ifr.ifr_name, token[0]);
#if ENABLE_FEATURE_NAMEIF_EXTENDED
/* Check for phy address */
memset(&eth_settings, 0, sizeof(eth_settings));
eth_settings.cmd = ETHTOOL_GSET;
ifr.ifr_data = (caddr_t) &eth_settings;
ioctl(ctl_sk, SIOCETHTOOL, &ifr);
/* Check for driver etc. */
memset(&drvinfo, 0, sizeof(struct ethtool_drvinfo));
memset(&drvinfo, 0, sizeof(drvinfo));
drvinfo.cmd = ETHTOOL_GDRVINFO;
ifr.ifr_data = (caddr_t) &drvinfo;
/* Get driver and businfo first, so we have it in drvinfo */
@ -196,6 +287,8 @@ int nameif_main(int argc UNUSED_PARAM, char **argv)
continue;
if (ch->driver && strcmp(ch->driver, drvinfo.driver) != 0)
continue;
if (ch->phy_address != -1 && ch->phy_address != eth_settings.phy_address)
continue;
#endif
if (ch->mac && memcmp(ch->mac, ifr.ifr_hwaddr.sa_data, ETH_ALEN) != 0)
continue;