blob: 74c30c546151c8db520500d8b70bbe196118fd05 [file] [log] [blame]
#include "config.h"
#include "config_parser.hpp"
#include "ethernet_interface.hpp"
#include "ipaddress.hpp"
#include "network_manager.hpp"
#include "routing_table.hpp"
#include "vlan_interface.hpp"
#include "xyz/openbmc_project/Common/error.hpp"
#include <phosphor-logging/elog-errors.hpp>
#include <phosphor-logging/log.hpp>
#include <arpa/inet.h>
#include <linux/ethtool.h>
#include <linux/sockios.h>
#include <net/if.h>
#include <netinet/in.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <unistd.h>
#include <algorithm>
#include <experimental/filesystem>
#include <fstream>
#include <sstream>
#include <string>
namespace phosphor
{
namespace network
{
using namespace phosphor::logging;
using namespace sdbusplus::xyz::openbmc_project::Common::Error;
using Argument = xyz::openbmc_project::Common::InvalidArgument;
EthernetInterface::EthernetInterface(sdbusplus::bus::bus& bus,
const std::string& objPath,
bool dhcpEnabled,
Manager& parent,
bool emitSignal) :
Ifaces(bus, objPath.c_str(), true),
bus(bus),
manager(parent),
objPath(objPath)
{
auto intfName = objPath.substr(objPath.rfind("/") + 1);
std::replace(intfName.begin(), intfName.end(), '_', '.');
interfaceName(intfName);
EthernetInterfaceIntf::dHCPEnabled(dhcpEnabled);
MacAddressIntf::mACAddress(getMACAddress(intfName));
EthernetInterfaceIntf::nTPServers(getNTPServersFromConf());
EthernetInterfaceIntf::nameservers(getNameServerFromConf());
// Emit deferred signal.
if (emitSignal)
{
this->emit_object_added();
}
}
void EthernetInterface::createIPAddressObjects()
{
std::string gateway;
addrs.clear();
auto addrs = getInterfaceAddrs()[interfaceName()];
IP::Protocol addressType = IP::Protocol::IPv4;
IP::AddressOrigin origin = IP::AddressOrigin::Static;
route::Table routingTable;
for (auto& addr : addrs)
{
if (addr.addrType == AF_INET6)
{
addressType = IP::Protocol::IPv6;
}
if (dHCPEnabled())
{
origin = IP::AddressOrigin::DHCP;
}
else if (isLinkLocalIP(addr.ipaddress))
{
origin = IP::AddressOrigin::LinkLocal;
}
gateway = routingTable.getGateway(addr.addrType, addr.ipaddress, addr.prefix);
std::string ipAddressObjectPath = generateObjectPath(addressType,
addr.ipaddress,
addr.prefix,
gateway);
this->addrs.emplace(
std::move(addr.ipaddress),
std::make_shared<phosphor::network::IPAddress>(
bus,
ipAddressObjectPath.c_str(),
*this,
addressType,
addr.ipaddress,
origin,
addr.prefix,
gateway));
origin = IP::AddressOrigin::Static;
}
}
void EthernetInterface::iP(IP::Protocol protType,
std::string ipaddress,
uint8_t prefixLength,
std::string gateway)
{
if (dHCPEnabled())
{
log<level::INFO>("DHCP enabled on the interface"),
entry("INTERFACE=%s", interfaceName().c_str());
dHCPEnabled(false);
}
IP::AddressOrigin origin = IP::AddressOrigin::Static;
int addressFamily = (protType == IP::Protocol::IPv4) ? AF_INET : AF_INET6;
if (!isValidIP(addressFamily, ipaddress))
{
log<level::ERR>("Not a valid IP address"),
entry("ADDRESS=%s", ipaddress.c_str());
elog<InvalidArgument>(Argument::ARGUMENT_NAME("ipaddress"),
Argument::ARGUMENT_VALUE(ipaddress.c_str()));
}
if (!gateway.empty() && (!isValidIP(addressFamily, gateway)))
{
log<level::ERR>("Not a valid Gateway"),
entry("GATEWAY=%s", gateway.c_str());
elog<InvalidArgument>(Argument::ARGUMENT_NAME("gateway"),
Argument::ARGUMENT_VALUE(gateway.c_str()));
}
if (!isValidPrefix(addressFamily, prefixLength))
{
log<level::ERR>("PrefixLength is not correct "),
entry("PREFIXLENGTH=%d", gateway.c_str());
elog<InvalidArgument>(Argument::ARGUMENT_NAME("prefixLength"),
Argument::ARGUMENT_VALUE(std::to_string(
prefixLength).c_str()));
}
std::string objectPath = generateObjectPath(protType,
ipaddress,
prefixLength,
gateway);
this->addrs.emplace(
std::move(ipaddress),
std::make_shared<phosphor::network::IPAddress>(
bus,
objectPath.c_str(),
*this,
protType,
ipaddress,
origin,
prefixLength,
gateway));
manager.writeToConfigurationFile();
}
/*
Note: We don't have support for ethtool now
will enable this code once we bring the ethtool
in the image.
TODO: https://github.com/openbmc/openbmc/issues/1484
*/
InterfaceInfo EthernetInterface::getInterfaceInfo() const
{
int sock{-1};
struct ifreq ifr{0};
struct ethtool_cmd edata{0};
LinkSpeed speed {0};
Autoneg autoneg {0};
DuplexMode duplex {0};
do
{
sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
if (sock < 0)
{
log<level::ERR>("socket creation failed:",
entry("ERROR=%s", strerror(errno)));
break;
}
strncpy(ifr.ifr_name, interfaceName().c_str(), sizeof(ifr.ifr_name));
ifr.ifr_data = reinterpret_cast<char*>(&edata);
edata.cmd = ETHTOOL_GSET;
if (ioctl(sock, SIOCETHTOOL, &ifr) < 0)
{
log<level::ERR>("ioctl failed for SIOCETHTOOL:",
entry("ERROR=%s", strerror(errno)));
break;
}
speed = edata.speed;
duplex = edata.duplex;
autoneg = edata.autoneg;
}
while (0);
if (sock)
{
close(sock);
}
return std::make_tuple(speed, duplex, autoneg);
}
/** @brief get the mac address of the interface.
* @return macaddress on success
*/
std::string EthernetInterface::getMACAddress(
const std::string& interfaceName) const
{
struct ifreq ifr{};
char macAddress[mac_address::size] {};
int sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
if (sock < 0)
{
log<level::ERR>("socket creation failed:",
entry("ERROR=%s", strerror(errno)));
return macAddress;
}
strcpy(ifr.ifr_name, interfaceName.c_str());
if (ioctl(sock, SIOCGIFHWADDR, &ifr) != 0)
{
log<level::ERR>("ioctl failed for SIOCGIFHWADDR:",
entry("ERROR=%s", strerror(errno)));
return macAddress;
}
snprintf(macAddress, mac_address::size, mac_address::format,
ifr.ifr_hwaddr.sa_data[0], ifr.ifr_hwaddr.sa_data[1],
ifr.ifr_hwaddr.sa_data[2], ifr.ifr_hwaddr.sa_data[3],
ifr.ifr_hwaddr.sa_data[4], ifr.ifr_hwaddr.sa_data[5]);
return macAddress;
}
std::string EthernetInterface::generateId(const std::string& ipaddress,
uint8_t prefixLength,
const std::string& gateway)
{
std::stringstream hexId;
std::string hashString = ipaddress;
hashString += std::to_string(prefixLength);
hashString += gateway;
// Only want 8 hex digits.
hexId << std::hex << ((std::hash<std::string> {}(
hashString)) & 0xFFFFFFFF);
return hexId.str();
}
void EthernetInterface::deleteObject(const std::string& ipaddress)
{
auto it = addrs.find(ipaddress);
if (it == addrs.end())
{
log<level::ERR>("DeleteObject:Unable to find the object.");
return;
}
this->addrs.erase(it);
manager.writeToConfigurationFile();
}
void EthernetInterface::deleteVLANFromSystem(const std::string& interface)
{
auto confDir = manager.getConfDir();
fs::path networkFile = confDir;
networkFile /= systemd::config::networkFilePrefix + interface +
systemd::config::networkFileSuffix;
fs::path deviceFile = confDir;
deviceFile /= interface + systemd::config::deviceFileSuffix;
// delete the vlan network file
if (fs::is_regular_file(networkFile))
{
fs::remove(networkFile);
}
// delete the vlan device file
if (fs::is_regular_file(deviceFile))
{
fs::remove(deviceFile);
}
// TODO systemd doesn't delete the virtual network interface
// even after deleting all the related configuartion.
// https://github.com/systemd/systemd/issues/6600
try
{
deleteInterface(interface);
}
catch (InternalFailure& e)
{
commit<InternalFailure>();
}
}
void EthernetInterface::deleteVLANObject(const std::string& interface)
{
auto it = vlanInterfaces.find(interface);
if (it == vlanInterfaces.end())
{
log<level::ERR>("DeleteVLANObject:Unable to find the object",
entry("INTERFACE=%s",interface.c_str()));
return;
}
deleteVLANFromSystem(interface);
// delete the interface
vlanInterfaces.erase(it);
manager.writeToConfigurationFile();
}
std::string EthernetInterface::generateObjectPath(IP::Protocol addressType,
const std::string& ipaddress,
uint8_t prefixLength,
const std::string& gateway) const
{
std::string type = convertForMessage(addressType);
type = type.substr(type.rfind('.') + 1);
std::transform(type.begin(), type.end(), type.begin(), ::tolower);
std::experimental::filesystem::path objectPath;
objectPath /= objPath;
objectPath /= type;
objectPath /= generateId(ipaddress, prefixLength, gateway);
return objectPath.string();
}
bool EthernetInterface::dHCPEnabled(bool value)
{
if (value == EthernetInterfaceIntf::dHCPEnabled())
{
return value;
}
EthernetInterfaceIntf::dHCPEnabled(value);
manager.writeToConfigurationFile();
return value;
}
ServerList EthernetInterface::nameservers(ServerList value)
{
try
{
EthernetInterfaceIntf::nameservers(value);
writeConfigurationFile();
// Currently we don't have systemd-resolved enabled
// in the openbmc. Once we update the network conf file,
// it should be read by systemd-resolved.service.
// The other reason to write the resolv conf is,
// we don't want to restart the networkd for nameserver change.
// as restarting of systemd-networkd takes more then 2 secs
writeDNSEntries(value, resolvConfFile);
}
catch (InternalFailure& e)
{
log<level::ERR>("Exception processing DNS entries");
}
return EthernetInterfaceIntf::nameservers();
}
ServerList EthernetInterface::getNameServerFromConf()
{
fs::path confPath = manager.getConfDir();
std::string fileName = systemd::config::networkFilePrefix +
interfaceName() +
systemd::config::networkFileSuffix;
confPath /= fileName;
ServerList servers;
config::Parser parser(confPath.string());
auto rc = config::ReturnCode::SUCCESS;
std::tie(rc, servers) = parser.getValues("Network", "DNS");
if (rc != config::ReturnCode::SUCCESS)
{
log<level::DEBUG>("Unable to get the value for network[DNS]",
entry("RC=%d", rc));
}
return servers;
}
void EthernetInterface::writeDNSEntries(const ServerList& dnsList,
const std::string& file)
{
std::fstream outStream(file, std::fstream::out);
if (!outStream.is_open())
{
log<level::ERR>("Unable to open the file",
entry("FILE=%s", file.c_str()));
elog<InternalFailure>();
}
outStream << "### Generated manually via dbus settings ###\n";
for(const auto& server : dnsList)
{
outStream << "nameserver " << server << "\n";
}
}
void EthernetInterface::loadVLAN(VlanId id)
{
std::string vlanInterfaceName = interfaceName() + "." +
std::to_string(id);
std::string path = objPath;
path += "_" + std::to_string(id);
auto dhcpEnabled = getDHCPValue(manager.getConfDir().string(),
vlanInterfaceName);
auto vlanIntf = std::make_unique<phosphor::network::VlanInterface>(
bus,
path.c_str(),
dhcpEnabled,
id,
*this,
manager);
// Fetch the ip address from the system
// and create the dbus object.
vlanIntf->createIPAddressObjects();
this->vlanInterfaces.emplace(std::move(vlanInterfaceName),
std::move(vlanIntf));
}
void EthernetInterface::createVLAN(VlanId id)
{
std::string vlanInterfaceName = interfaceName() + "." +
std::to_string(id);
std::string path = objPath;
path += "_" + std::to_string(id);
auto vlanIntf = std::make_unique<phosphor::network::VlanInterface>(
bus,
path.c_str(),
false,
id,
*this,
manager);
// write the device file for the vlan interface.
vlanIntf->writeDeviceFile();
this->vlanInterfaces.emplace(vlanInterfaceName,
std::move(vlanIntf));
// write the new vlan device entry to the configuration(network) file.
manager.writeToConfigurationFile();
}
ServerList EthernetInterface::getNTPServersFromConf()
{
fs::path confPath = manager.getConfDir();
std::string fileName = systemd::config::networkFilePrefix + interfaceName() +
systemd::config::networkFileSuffix;
confPath /= fileName;
ServerList servers;
config::Parser parser(confPath.string());
auto rc = config::ReturnCode::SUCCESS;
std::tie(rc, servers) = parser.getValues("Network", "NTP");
if (rc != config::ReturnCode::SUCCESS)
{
log<level::DEBUG>("Unable to get the value for Network[NTP]",
entry("rc=%d", rc));
}
return servers;
}
ServerList EthernetInterface::nTPServers(ServerList servers)
{
auto ntpServers = EthernetInterfaceIntf::nTPServers(servers);
writeConfigurationFile();
// timesynchd reads the NTP server configuration from the
// network file.
restartSystemdUnit(networkdService);
return ntpServers;
}
// Need to merge the below function with the code which writes the
// config file during factory reset.
// TODO openbmc/openbmc#1751
void EthernetInterface::writeConfigurationFile()
{
// write all the static ip address in the systemd-network conf file
using namespace std::string_literals;
using AddressOrigin =
sdbusplus::xyz::openbmc_project::Network::server::IP::AddressOrigin;
namespace fs = std::experimental::filesystem;
// if there is vlan interafce then write the configuration file
// for vlan also.
for (const auto& intf: vlanInterfaces)
{
intf.second->writeConfigurationFile();
}
fs::path confPath = manager.getConfDir();
std::string fileName = systemd::config::networkFilePrefix + interfaceName() +
systemd::config::networkFileSuffix;
confPath /= fileName;
std::fstream stream;
stream.open(confPath.c_str(), std::fstream::out);
if (!stream.is_open())
{
log<level::ERR>("Unable to open the file",
entry("FILE=%s", confPath.c_str()));
elog<InternalFailure>();
}
// Write the device
stream << "[" << "Match" << "]\n";
stream << "Name=" << interfaceName() << "\n";
auto addrs = getAddresses();
// write the network section
stream << "[" << "Network" << "]\n";
stream << "LinkLocalAddressing=yes\n";
stream << "IPv6AcceptRA=false\n";
// Add the VLAN entry
for (const auto& intf: vlanInterfaces)
{
stream << "VLAN=" << intf.second->EthernetInterface::interfaceName()
<< "\n";
}
// When the interface configured as dhcp, we don't need below given entries
// in config file.
if (dHCPEnabled() == false)
{
//Add the NTP server
for (const auto& ntp : EthernetInterfaceIntf::nTPServers())
{
stream << "NTP=" << ntp << "\n";
}
//Add the DNS entry
for (const auto& dns : EthernetInterfaceIntf::nameservers())
{
stream << "DNS=" << dns << "\n";
}
// Static
for (const auto& addr : addrs)
{
if (addr.second->origin() == AddressOrigin::Static)
{
std::string address = addr.second->address() + "/" +
std::to_string(addr.second->prefixLength());
stream << "Address=" << address << "\n";
}
}
if (manager.getSystemConf())
{
stream << "Gateway=" << manager.getSystemConf()->defaultGateway()
<< "\n";
}
// write the route section
stream << "[" << "Route" << "]\n";
for (const auto& addr : addrs)
{
if (addr.second->origin() == AddressOrigin::Static)
{
int addressFamily = addr.second->type() == IP::Protocol::IPv4 ?
AF_INET : AF_INET6;
std::string destination = getNetworkID(
addressFamily,
addr.second->address(),
addr.second->prefixLength());
if (addr.second->gateway() != "0.0.0.0" &&
addr.second->gateway() != "" &&
destination != "0.0.0.0" &&
destination != "")
{
stream << "Gateway=" << addr.second->gateway() << "\n";
stream << "Destination=" << destination << "\n";
}
}
}
}
auto value = dHCPEnabled() ? "true"s : "false"s;
stream << "DHCP="s + value + "\n";
// Write the dhcp section irrespective of whether DHCP is enabled or not
writeDHCPSection(stream);
stream.close();
}
void EthernetInterface::writeDHCPSection(std::fstream& stream)
{
using namespace std::string_literals;
// write the dhcp section
stream << "[DHCP]\n";
// Hardcoding the client identifier to mac, to address below issue
// https://github.com/openbmc/openbmc/issues/1280
stream << "ClientIdentifier=mac\n";
if (manager.getDHCPConf())
{
auto value = manager.getDHCPConf()->dNSEnabled() ? "true"s : "false"s;
stream << "UseDNS="s + value + "\n";
value = manager.getDHCPConf()->nTPEnabled() ? "true"s : "false"s;
stream << "UseNTP="s + value + "\n";
value = manager.getDHCPConf()->hostNameEnabled() ? "true"s : "false"s;
stream << "UseHostname="s + value + "\n";
value =
manager.getDHCPConf()->sendHostNameEnabled() ? "true"s : "false"s;
stream << "SendHostname="s + value + "\n";
}
}
std::string EthernetInterface::mACAddress(std::string value)
{
if (!mac_address::validate(value))
{
log<level::DEBUG>("MACAddress is not valid.",
entry("MAC=%s", value.c_str()));
return MacAddressIntf::mACAddress();
}
// check whether MAC is broadcast mac.
auto intMac = mac_address::internal::convertToInt(value);
if (!(intMac ^ mac_address::broadcastMac))
{
log<level::DEBUG>("MACAddress is a broadcast mac.",
entry("MAC=%s", value.c_str()));
return MacAddressIntf::mACAddress();
}
// Check if the MAC changed.
auto pmac = MacAddressIntf::mACAddress();
if (strcasecmp(pmac.c_str(), value.c_str()) == 0)
{
return MacAddressIntf::mACAddress();
}
// Allow the mac to be set if one of the condition is true.
// 1) Incoming Mac is of local admin type.
// or
// 2) Incoming mac is same as eeprom Mac.
if (!(intMac & mac_address::localAdminMask))
{
try
{
auto inventoryMac = mac_address::getfromInventory(bus);
auto intInventoryMac = mac_address::internal::convertToInt(inventoryMac);
if (intInventoryMac != intMac)
{
log<level::DEBUG>("Given MAC address is neither a local Admin "
"type nor is same as in inventory");
return MacAddressIntf::mACAddress();
}
}
catch(InternalFailure& e)
{
log<level::ERR>("Exception occurred during getting of MAC "
"address from Inventory");
return MacAddressIntf::mACAddress();
}
}
auto interface = interfaceName();
execute("/sbin/fw_setenv", "fw_setenv", "ethaddr", value.c_str());
//TODO: would replace below three calls
// with restarting of systemd-netwokd
// through https://github.com/systemd/systemd/issues/6696
execute("/sbin/ip", "ip", "link", "set", "dev", interface.c_str(), "down");
execute("/sbin/ip", "ip", "link", "set", "dev", interface.c_str(), "address",
value.c_str());
execute("/sbin/ip", "ip", "link", "set", "dev", interface.c_str(), "up");
auto mac = MacAddressIntf::mACAddress(std::move(value));
//update all the vlan interfaces
for(const auto& intf: vlanInterfaces)
{
intf.second->updateMacAddress();
}
// restart the systemd networkd so that dhcp client gets the
// ip for the changed mac address.
if (dHCPEnabled())
{
restartSystemdUnit(networkdService);
}
return mac;
}
void EthernetInterface::deleteAll()
{
if(EthernetInterfaceIntf::dHCPEnabled())
{
log<level::INFO>("DHCP enabled on the interface"),
entry("INTERFACE=%s", interfaceName().c_str());
}
// clear all the ip on the interface
addrs.clear();
manager.writeToConfigurationFile();
}
}//namespace network
}//namespace phosphor