diff options
| -rw-r--r-- | toys/net/ifconfig.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/toys/net/ifconfig.c b/toys/net/ifconfig.c index fe58b653..74779c54 100644 --- a/toys/net/ifconfig.c +++ b/toys/net/ifconfig.c @@ -5,6 +5,11 @@ * Reviewed by Kyungsu Kim <kaspyx@gmail.com> * * Not in SUSv4. + * + * Obsolete fields included for historical purposes: + * irq|io_addr|mem_start ADDR - micromanage obsolete hardware + * outfill|keepalive INTEGER - SLIP analog dialup line quality monitoring + * metric INTEGER - added to Linux 0.9.10 with comment "never used", still true USE_IFCONFIG(NEWTOY(ifconfig, "^?a", TOYFLAG_SBIN)) @@ -21,29 +26,28 @@ config IFCONFIG -a Show all interfaces, not just active ones - Additional arguments are actions to perform on the interface: + Standard ACTIONs to perform on an INTERFACE: + + ADDR[/MASK] - set IPv4 address (1.2.3.4/5) and activate interface + add|del ADDR[/LEN] - add/remove IPv6 address (1111::8888/128) + up|down - activate or deactivate interface - ADDRESS[/NETMASK] - set IPv4 address (1.2.3.4/5) - default - unset ipv4 address - add|del ADDRESS[/PREFIXLEN] - add/remove IPv6 address (1111::8888/128) - up - enable interface - down - disable interface + Advanced ACTIONs (default values usually suffice): - netmask|broadcast|pointopoint ADDRESS - set more IPv4 characteristics - hw ether|infiniband ADDRESS - set LAN hardware address (AA:BB:CC...) - txqueuelen LEN - number of buffered packets before output blocks - mtu LEN - size of outgoing packets (Maximum Transmission Unit) + default - remove IPv4 address + netmask ADDR - set IPv4 netmask via 255.255.255.0 instead of /24 + txqueuelen LEN - number of buffered packets before output blocks + mtu LEN - size of outgoing packets (Maximum Transmission Unit) + broadcast ADDR - Set broadcast address + pointopoint ADDR - PPP and PPPOE use this instead of "route add default gw" + hw TYPE ADDR - set hardware (mac) address (type = ether|infiniband) Flags you can set on an interface (or -remove by prefixing with -): - arp - don't use Address Resolution Protocol to map LAN routes - promisc - don't discard packets that aren't to this LAN hardware address - multicast - force interface into multicast mode if the driver doesn't - allmulti - promisc for multicast packets - Obsolete fields included for historical purposes: - irq|io_addr|mem_start ADDR - micromanage obsolete hardware - outfill|keepalive INTEGER - SLIP analog dialup line quality monitoring - metric INTEGER - added to Linux 0.9.10 with comment "never used", still true + arp - don't use Address Resolution Protocol to map LAN routes + promisc - don't discard packets that aren't to this LAN hardware address + multicast - force interface into multicast mode if the driver doesn't + allmulti - promisc for multicast packets */ #define FOR_ifconfig @@ -115,7 +119,7 @@ static void display_ifconfig(char *name, int always, unsigned long long val[]) if (!always && !(flags & IFF_UP)) return; // query hardware type and hardware address - i = ioctl(TT.sockfd, SIOCGIFHWADDR, &ifre); + xioctl(TT.sockfd, SIOCGIFHWADDR, &ifre); for (i=0; i < (sizeof(types)/sizeof(*types))-1; i++) if (ifre.ifr_hwaddr.sa_family == types[i].type) break; @@ -150,6 +154,7 @@ static void display_ifconfig(char *name, int always, unsigned long long val[]) {"Mask", 0, SIOCGIFNETMASK} }; + // TODO: can this be ipv6? Why are we checking here when ipv6 source later? xprintf("%10c%s", ' ', (si->sin_family == AF_INET) ? "inet" : (si->sin_family == AF_INET6) ? "inet6" : "unspec"); |