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package network::ethernet; # $Id$
use c;
use detect_devices;
use common;
use run_program;
our @dhcp_clients = qw(dhclient dhcpcd pump dhcpxd);
sub install_dhcp_client {
my ($in, $client) = @_;
my %packages = (
"dhclient" => "dhcp-client",
);
#- use default dhcp client if none is provided
$client ||= $dhcp_clients[0];
$client = $packages{$client} if exists $packages{$client};
$in->do_pkgs->install($client);
}
sub mapIntfToDevice {
my ($interface) = @_;
my $hw_addr = c::getHwIDs($interface);
return {} if $hw_addr =~ /^usb/;
my ($bus, $slot, $func) = map { hex($_) } ($hw_addr =~ /([0-9a-f]+):([0-9a-f]+)\.([0-9a-f]+)/);
$hw_addr && (every { defined $_ } $bus, $slot, $func) ?
grep { $_->{pci_bus} == $bus && $_->{pci_device} == $slot && $_->{pci_function} == $func } detect_devices::probeall() : {};
}
# return list of [ intf_name, module, device_description ] tuples such as:
# [ "eth0", "3c59x", "3Com Corporation|3c905C-TX [Fast Etherlink]" ]
#
# this function try several method in order to get interface's driver and description in order to support both:
# - hotplug managed devices (USB, firewire)
# - special interfaces (IP aliasing, VLAN)
sub get_eth_cards {
my ($modules_conf) = @_;
my @all_cards = detect_devices::getNet();
my @devs = detect_devices::pcmcia_probe();
my $saved_driver;
# compute device description and return (interface, driver, description) tuples:
return map {
my $interface = $_;
my $description;
# 1) get interface's driver through ETHTOOL ioctl:
my ($a, $detected_through_ethtool);
$a = c::getNetDriver($interface);
if ($a) {
$detected_through_ethtool = 1;
} else {
# 2) get interface's driver through module aliases:
$a = $modules_conf->get_alias($interface);
}
# workaround buggy drivers that returns a bogus driver name for the GDRVINFO command of the ETHTOOL ioctl:
my %fixes = (
"p80211_prism2_cs" => 'prism2_cs',
"p80211_prism2_pci" => 'prism2_pci',
"p80211_prism2_usb" => 'prism2_usb',
"ip1394" => "eth1394",
"DL2K" => "dl2k",
"hostap" => undef, #- should be either "hostap_plx", "hostap_pci" or "hostap_cs"
);
$a = $fixes{$a} if exists $fixes{$a};
# 3) try to match a PCMCIA device for device description:
if (my $b = find { $_->{device} eq $interface } @devs) { # PCMCIA case
$a = $b->{driver};
$description = $b->{description};
} else {
# 4) try to lookup a device by hardware address for device description:
# maybe should have we try sysfs first for robustness?
($description) = (mapIntfToDevice($interface))[0]->{description};
}
# 5) try to match a device through sysfs for driver & device description:
# (eg: ipw2100 driver for intel centrino do not support ETHTOOL)
if (!$description) {
my $drv = readlink("/sys/class/net/$interface/driver");
if ($drv && $drv =~ s!.*/!!) {
$a = $drv unless $detected_through_ethtool;
my %l;
my $dev_path = "/sys/class/net/$interface/device";
my $sysfs_fields = detect_devices::get_sysfs_device_id_map($dev_path);
$l{$_} = hex(chomp_(cat_("$dev_path/" . $sysfs_fields->{$_}))) foreach keys %$sysfs_fields;
my @cards = grep { my $dev = $_; every { $dev->{$_} eq $l{$_} } keys %l } detect_devices::probeall();
$description = $cards[0]{description} if @cards == 1;
}
}
# 6) try to match a device by driver for device description:
# (eg: madwifi, ndiswrapper, ...)
if (!$description) {
my @cards = grep { $_->{driver} eq ($a || $saved_driver) } detect_devices::probeall();
$description = $cards[0]{description} if @cards == 1;
}
$a and $saved_driver = $a; # handle multiple cards managed by the same driver
[ $interface, $saved_driver, if_($description, $description) ];
} @all_cards;
}
sub get_eth_cards_names {
my (@all_cards) = @_;
map { $_->[0] => join(': ', $_->[0], $_->[2]) } @all_cards;
}
#- returns (link_type, mac_address)
sub get_eth_card_mac_address {
my ($intf) = @_;
#- don't look for 6 bytes addresses only because of firewire
`LC_ALL= LANG= $::prefix/sbin/ip -o link show $intf 2>/dev/null` =~ m|.*link/(\S+)\s((?:[0-9a-f]{2}:?)+)\s|;
}
#- write interfaces MAC address in iftab
sub update_iftab() {
foreach my $intf (detect_devices::getNet()) {
my ($link_type, $mac_address) = get_eth_card_mac_address($intf) or next;
#- do not write zeroed MAC addresses in iftab, it confuses ifrename
$mac_address =~ /^[0:]+$/ and next;
my $descriptor = ${{ ether => 'mac', ieee1394 => 'mac_ieee1394' }}{$link_type} or next;
substInFile {
s/^$intf\s+.*\n//;
s/^.*\s+$mac_address\n//;
$_ .= qq($intf\t$descriptor $mac_address\n) if eof;
} "$::prefix/etc/iftab";
}
}
# automatic net aliases configuration
sub configure_eth_aliases {
my ($modules_conf) = @_;
my @pcmcia_interfaces = map { $_->{device} } detect_devices::pcmcia_probe();
foreach my $card (get_eth_cards($modules_conf)) {
if (member($card->[0], @pcmcia_interfaces)) {
#- do not write aliases for pcmcia cards, or cardmgr will not be loaded
$modules_conf->remove_alias($card->[0]);
} else {
$modules_conf->set_alias($card->[0], $card->[1]);
}
}
}
1;
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