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transporthandler.cpp
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#include "transporthandler.hpp"
#include <ipmid/utils.hpp>
#include <phosphor-logging/lg2.hpp>
#include <stdplus/net/addr/subnet.hpp>
#include <stdplus/raw.hpp>
#include <array>
#include <fstream>
using phosphor::logging::elog;
using sdbusplus::error::xyz::openbmc_project::common::InternalFailure;
using sdbusplus::error::xyz::openbmc_project::common::InvalidArgument;
using sdbusplus::server::xyz::openbmc_project::network::EthernetInterface;
using sdbusplus::server::xyz::openbmc_project::network::IP;
using sdbusplus::server::xyz::openbmc_project::network::Neighbor;
namespace cipher
{
std::vector<uint8_t> getCipherList()
{
std::vector<uint8_t> cipherList;
std::ifstream jsonFile(cipher::configFile);
if (!jsonFile.is_open())
{
lg2::error("Channel Cipher suites file not found");
elog<InternalFailure>();
}
auto data = Json::parse(jsonFile, nullptr, false);
if (data.is_discarded())
{
lg2::error("Parsing channel cipher suites JSON failed");
elog<InternalFailure>();
}
// Byte 1 is reserved
cipherList.push_back(0x00);
for (const auto& record : data)
{
cipherList.push_back(record.value(cipher, 0));
}
return cipherList;
}
} // namespace cipher
namespace ipmi
{
namespace transport
{
/** @brief Valid address origins for IPv4 */
const std::unordered_set<IP::AddressOrigin> originsV4 = {
IP::AddressOrigin::Static,
IP::AddressOrigin::DHCP,
};
static constexpr uint8_t oemCmdStart = 192;
// Checks if the ifname is part of the networkd path
// This assumes the path came from the network subtree PATH_ROOT
bool ifnameInPath(std::string_view ifname, std::string_view path)
{
constexpr auto rs = PATH_ROOT.size() + 1; // ROOT + separator
const auto is = rs + ifname.size(); // ROOT + sep + ifname
return path.size() > rs && path.substr(rs).starts_with(ifname) &&
(path.size() == is || path[is] == '/');
}
std::optional<ChannelParams>
maybeGetChannelParams(sdbusplus::bus_t& bus, uint8_t channel)
{
auto ifname = getChannelName(channel);
if (ifname.empty())
{
return std::nullopt;
}
// Enumerate all VLAN + ETHERNET interfaces
std::vector<std::string> interfaces = {INTF_VLAN, INTF_ETHERNET};
ipmi::ObjectTree objs =
ipmi::getSubTree(bus, interfaces, std::string{PATH_ROOT});
ChannelParams params;
for (const auto& [path, impls] : objs)
{
if (!ifnameInPath(ifname, path))
{
continue;
}
for (const auto& [service, intfs] : impls)
{
bool vlan = false;
bool ethernet = false;
for (const auto& intf : intfs)
{
if (intf == INTF_VLAN)
{
vlan = true;
}
else if (intf == INTF_ETHERNET)
{
ethernet = true;
}
}
if (params.service.empty() && (vlan || ethernet))
{
params.service = service;
}
if (params.ifPath.empty() && !vlan && ethernet)
{
params.ifPath = path;
}
if (params.logicalPath.empty() && vlan)
{
params.logicalPath = path;
}
}
}
// We must have a path for the underlying interface
if (params.ifPath.empty())
{
return std::nullopt;
}
// We don't have a VLAN so the logical path is the same
if (params.logicalPath.empty())
{
params.logicalPath = params.ifPath;
}
params.id = channel;
params.ifname = std::move(ifname);
return params;
}
ChannelParams getChannelParams(sdbusplus::bus_t& bus, uint8_t channel)
{
auto params = maybeGetChannelParams(bus, channel);
if (!params)
{
lg2::error("Failed to get channel params: {CHANNEL}", "CHANNEL",
channel);
elog<InternalFailure>();
}
return std::move(*params);
}
/** @brief Get / Set the Property value from phosphor-networkd EthernetInterface
*/
template <typename T>
static T getEthProp(sdbusplus::bus_t& bus, const ChannelParams& params,
const std::string& prop)
{
return std::get<T>(getDbusProperty(bus, params.service, params.logicalPath,
INTF_ETHERNET, prop));
}
template <typename T>
static void setEthProp(sdbusplus::bus_t& bus, const ChannelParams& params,
const std::string& prop, const T& t)
{
return setDbusProperty(bus, params.service, params.logicalPath,
INTF_ETHERNET, prop, t);
}
/** @brief Determines the MAC of the ethernet interface
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @return The configured mac address
*/
stdplus::EtherAddr getMACProperty(sdbusplus::bus_t& bus,
const ChannelParams& params)
{
auto prop = getDbusProperty(bus, params.service, params.ifPath, INTF_MAC,
"MACAddress");
return stdplus::fromStr<stdplus::EtherAddr>(std::get<std::string>(prop));
}
/** @brief Sets the system value for MAC address on the given interface
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @param[in] mac - MAC address to apply
*/
void setMACProperty(sdbusplus::bus_t& bus, const ChannelParams& params,
stdplus::EtherAddr mac)
{
setDbusProperty(bus, params.service, params.ifPath, INTF_MAC, "MACAddress",
stdplus::toStr(mac));
}
void deleteObjectIfExists(sdbusplus::bus_t& bus, const std::string& service,
const std::string& path)
{
if (path.empty())
{
return;
}
try
{
auto req = bus.new_method_call(service.c_str(), path.c_str(),
ipmi::DELETE_INTERFACE, "Delete");
bus.call_noreply(req);
}
catch (const sdbusplus::exception_t& e)
{
if (strcmp(e.name(),
"xyz.openbmc_project.Common.Error.InternalFailure") != 0 &&
strcmp(e.name(), "org.freedesktop.DBus.Error.UnknownObject") != 0)
{
// We want to rethrow real errors
throw;
}
}
}
/** @brief Sets the address info configured for the interface
* If a previous address path exists then it will be removed
* before the new address is added.
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @param[in] address - The address of the new IP
* @param[in] prefix - The prefix of the new IP
*/
template <int family>
void createIfAddr(sdbusplus::bus_t& bus, const ChannelParams& params,
typename AddrFamily<family>::addr address, uint8_t prefix)
{
auto newreq =
bus.new_method_call(params.service.c_str(), params.logicalPath.c_str(),
INTF_IP_CREATE, "IP");
std::string protocol =
sdbusplus::common::xyz::openbmc_project::network::convertForMessage(
AddrFamily<family>::protocol);
stdplus::ToStrHandle<stdplus::ToStr<typename AddrFamily<family>::addr>> tsh;
newreq.append(protocol, tsh(address), prefix, "");
bus.call_noreply(newreq);
}
/** @brief Trivial helper for getting the IPv4 address from getIfAddrs()
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @return The address and prefix if found
*/
auto getIfAddr4(sdbusplus::bus_t& bus, const ChannelParams& params)
{
std::optional<IfAddr<AF_INET>> ifaddr4 = std::nullopt;
IP::AddressOrigin src;
try
{
src = std::get<bool>(
getDbusProperty(bus, params.service, params.logicalPath,
INTF_ETHERNET, "DHCP4"))
? IP::AddressOrigin::DHCP
: IP::AddressOrigin::Static;
}
catch (const sdbusplus::exception_t& e)
{
lg2::error("Failed to get IPv4 source");
return ifaddr4;
}
for (uint8_t i = 0; i < MAX_IPV4_ADDRESSES; ++i)
{
ifaddr4 = getIfAddr<AF_INET>(bus, params, i, originsV4);
if (ifaddr4 && src == ifaddr4->origin)
{
break;
}
else
{
ifaddr4 = std::nullopt;
}
}
return ifaddr4;
}
/** @brief Reconfigures the IPv4 address info configured for the interface
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @param[in] address - The new address if specified
* @param[in] prefix - The new address prefix if specified
*/
void reconfigureIfAddr4(sdbusplus::bus_t& bus, const ChannelParams& params,
std::optional<stdplus::In4Addr> address,
std::optional<uint8_t> prefix)
{
auto ifaddr = getIfAddr4(bus, params);
if (!ifaddr && !address)
{
lg2::error("Missing address for IPv4 assignment");
elog<InternalFailure>();
}
uint8_t fallbackPrefix = AddrFamily<AF_INET>::defaultPrefix;
auto addr = stdplus::In4Addr{};
if (ifaddr)
{
addr = ifaddr->address;
fallbackPrefix = ifaddr->prefix;
deleteObjectIfExists(bus, params.service, ifaddr->path);
}
addr = address.value_or(addr);
if (addr != stdplus::In4Addr{})
{
createIfAddr<AF_INET>(bus, params, addr,
prefix.value_or(fallbackPrefix));
}
}
template <int family>
std::optional<IfNeigh<family>>
findGatewayNeighbor(sdbusplus::bus_t& bus, const ChannelParams& params,
ObjectLookupCache& neighbors)
{
auto gateway = getGatewayProperty<family>(bus, params);
if (!gateway)
{
return std::nullopt;
}
return findStaticNeighbor<family>(bus, params, *gateway, neighbors);
}
template <int family>
std::optional<IfNeigh<family>>
getGatewayNeighbor(sdbusplus::bus_t& bus, const ChannelParams& params)
{
ObjectLookupCache neighbors(bus, params, INTF_NEIGHBOR);
return findGatewayNeighbor<family>(bus, params, neighbors);
}
template <int family>
void reconfigureGatewayMAC(sdbusplus::bus_t& bus, const ChannelParams& params,
stdplus::EtherAddr mac)
{
auto gateway = getGatewayProperty<family>(bus, params);
if (!gateway)
{
lg2::error("Tried to set Gateway MAC without Gateway");
elog<InternalFailure>();
}
ObjectLookupCache neighbors(bus, params, INTF_NEIGHBOR);
auto neighbor =
findStaticNeighbor<family>(bus, params, *gateway, neighbors);
if (neighbor)
{
deleteObjectIfExists(bus, params.service, neighbor->path);
}
createNeighbor<family>(bus, params, *gateway, mac);
}
/** @brief Deconfigures the IPv6 address info configured for the interface
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @param[in] idx - The address index to operate on
*/
void deconfigureIfAddr6(sdbusplus::bus_t& bus, const ChannelParams& params,
uint8_t idx)
{
auto ifaddr = getIfAddr<AF_INET6>(bus, params, idx, originsV6Static);
if (ifaddr)
{
deleteObjectIfExists(bus, params.service, ifaddr->path);
}
}
/** @brief Reconfigures the IPv6 address info configured for the interface
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @param[in] idx - The address index to operate on
* @param[in] address - The new address
* @param[in] prefix - The new address prefix
*/
void reconfigureIfAddr6(sdbusplus::bus_t& bus, const ChannelParams& params,
uint8_t idx, stdplus::In6Addr address, uint8_t prefix)
{
deconfigureIfAddr6(bus, params, idx);
createIfAddr<AF_INET6>(bus, params, address, prefix);
}
/** @brief Converts the AddressOrigin into an IPv6Source
*
* @param[in] origin - The DBus Address Origin to convert
* @return The IPv6Source version of the origin
*/
IPv6Source originToSourceType(IP::AddressOrigin origin)
{
switch (origin)
{
case IP::AddressOrigin::Static:
return IPv6Source::Static;
case IP::AddressOrigin::DHCP:
return IPv6Source::DHCP;
case IP::AddressOrigin::SLAAC:
return IPv6Source::SLAAC;
default:
{
auto originStr = sdbusplus::common::xyz::openbmc_project::network::
convertForMessage(origin);
lg2::error("Invalid IP::AddressOrigin conversion to IPv6Source, "
"origin: {ORIGIN}",
"ORIGIN", originStr);
elog<InternalFailure>();
}
}
}
/** @brief Packs the IPMI message response with IPv6 address data
*
* @param[out] ret - The IPMI response payload to be packed
* @param[in] channel - The channel id corresponding to an ethernet interface
* @param[in] set - The set selector for determining address index
* @param[in] origins - Set of valid origins for address filtering
*/
void getLanIPv6Address(message::Payload& ret, uint8_t channel, uint8_t set,
const std::unordered_set<IP::AddressOrigin>& origins)
{
auto source = IPv6Source::Static;
bool enabled = false;
stdplus::In6Addr addr{};
uint8_t prefix{};
auto status = IPv6AddressStatus::Disabled;
auto ifaddr = channelCall<getIfAddr<AF_INET6>>(channel, set, origins);
if (ifaddr)
{
source = originToSourceType(ifaddr->origin);
enabled = (origins == originsV6Static);
addr = ifaddr->address;
prefix = ifaddr->prefix;
status = IPv6AddressStatus::Active;
}
ret.pack(set);
ret.pack(types::enum_cast<uint4_t>(source), uint3_t{}, enabled);
ret.pack(stdplus::raw::asView<char>(addr));
ret.pack(prefix);
ret.pack(types::enum_cast<uint8_t>(status));
}
/** @brief Gets the vlan ID configured on the interface
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @return VLAN id or the standard 0 for no VLAN
*/
uint16_t getVLANProperty(sdbusplus::bus_t& bus, const ChannelParams& params)
{
// VLAN devices will always have a separate logical object
if (params.ifPath == params.logicalPath)
{
return 0;
}
auto vlan = std::get<uint32_t>(getDbusProperty(
bus, params.service, params.logicalPath, INTF_VLAN, "Id"));
if ((vlan & VLAN_VALUE_MASK) != vlan)
{
lg2::error("networkd returned an invalid vlan: {VLAN} "
"(CH={CHANNEL}, IF={IFNAME})",
"CHANNEL", params.id, "IFNAME", params.ifname, "VLAN", vlan);
elog<InternalFailure>();
}
return vlan;
}
/** @brief Deletes all of the possible configuration parameters for a channel
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
*/
void deconfigureChannel(sdbusplus::bus_t& bus, ChannelParams& params)
{
// Delete all objects associated with the interface
ObjectTree objs =
ipmi::getSubTree(bus, std::vector<std::string>{DELETE_INTERFACE},
std::string{PATH_ROOT});
for (const auto& [path, impls] : objs)
{
if (!ifnameInPath(params.ifname, path))
{
continue;
}
for (const auto& [service, intfs] : impls)
{
deleteObjectIfExists(bus, service, path);
}
// Update params to reflect the deletion of vlan
if (path == params.logicalPath)
{
params.logicalPath = params.ifPath;
}
}
// Clear out any settings on the lower physical interface
setEthProp(bus, params, "DHCP4", false);
setEthProp(bus, params, "DHCP6", false);
setEthProp(bus, params, "IPv6AcceptRA", false);
}
/** @brief Creates a new VLAN on the specified interface
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @param[in] vlan - The id of the new vlan
*/
void createVLAN(sdbusplus::bus_t& bus, ChannelParams& params, uint16_t vlan)
{
if (vlan == 0)
{
return;
}
auto req = bus.new_method_call(params.service.c_str(), PATH_ROOT.c_str(),
INTF_VLAN_CREATE, "VLAN");
req.append(params.ifname, static_cast<uint32_t>(vlan));
auto reply = bus.call(req);
sdbusplus::message::object_path newPath;
reply.read(newPath);
params.logicalPath = std::move(newPath);
}
/** @brief Performs the necessary reconfiguration to change the VLAN
*
* @param[in] bus - The bus object used for lookups
* @param[in] params - The parameters for the channel
* @param[in] vlan - The new vlan id to use
*/
void reconfigureVLAN(sdbusplus::bus_t& bus, ChannelParams& params,
uint16_t vlan)
{
// Unfortunatetly we don't have built-in functions to migrate our interface
// customizations to new VLAN interfaces, or have some kind of decoupling.
// We therefore must retain all of our old information, setup the new VLAN
// configuration, then restore the old info.
// Save info from the old logical interface
bool dhcp4 = getEthProp<bool>(bus, params, "DHCP4");
bool dhcp6 = getEthProp<bool>(bus, params, "DHCP6");
bool ra = getEthProp<bool>(bus, params, "IPv6AcceptRA");
ObjectLookupCache ips(bus, params, INTF_IP);
auto ifaddr4 = findIfAddr<AF_INET>(bus, params, 0, originsV4, ips);
std::vector<IfAddr<AF_INET6>> ifaddrs6;
for (uint8_t i = 0; i < MAX_IPV6_STATIC_ADDRESSES; ++i)
{
auto ifaddr6 =
findIfAddr<AF_INET6>(bus, params, i, originsV6Static, ips);
if (!ifaddr6)
{
break;
}
ifaddrs6.push_back(std::move(*ifaddr6));
}
ObjectLookupCache neighbors(bus, params, INTF_NEIGHBOR);
auto neighbor4 = findGatewayNeighbor<AF_INET>(bus, params, neighbors);
auto neighbor6 = findGatewayNeighbor<AF_INET6>(bus, params, neighbors);
deconfigureChannel(bus, params);
createVLAN(bus, params, vlan);
// Re-establish the saved settings
setEthProp(bus, params, "DHCP4", dhcp4);
setEthProp(bus, params, "DHCP6", dhcp6);
setEthProp(bus, params, "IPv6AcceptRA", ra);
if (ifaddr4)
{
createIfAddr<AF_INET>(bus, params, ifaddr4->address, ifaddr4->prefix);
}
for (const auto& ifaddr6 : ifaddrs6)
{
createIfAddr<AF_INET6>(bus, params, ifaddr6.address, ifaddr6.prefix);
}
if (neighbor4)
{
createNeighbor<AF_INET>(bus, params, neighbor4->ip, neighbor4->mac);
}
if (neighbor6)
{
createNeighbor<AF_INET6>(bus, params, neighbor6->ip, neighbor6->mac);
}
}
// We need to store this value so it can be returned to the client
// It is volatile so safe to store in daemon memory.
static std::unordered_map<uint8_t, SetStatus> setStatus;
// Until we have good support for fixed versions of IPMI tool
// we need to return the VLAN id for disabled VLANs. The value is only
// used for verification that a disable operation succeeded and will only
// be sent if our system indicates that vlans are disabled.
static std::unordered_map<uint8_t, uint16_t> lastDisabledVlan;
/** @brief Gets the set status for the channel if it exists
* Otherise populates and returns the default value.
*
* @param[in] channel - The channel id corresponding to an ethernet interface
* @return A reference to the SetStatus for the channel
*/
SetStatus& getSetStatus(uint8_t channel)
{
auto it = setStatus.find(channel);
if (it != setStatus.end())
{
return it->second;
}
return setStatus[channel] = SetStatus::Complete;
}
/** @brief Unpacks the trivially copyable type from the message */
template <typename T>
static T unpackT(message::Payload& req)
{
std::array<uint8_t, sizeof(T)> bytes;
if (req.unpack(bytes) != 0)
{
throw ccReqDataLenInvalid;
}
return stdplus::raw::copyFrom<T>(bytes);
}
/** @brief Ensure the message is fully unpacked */
static void unpackFinal(message::Payload& req)
{
if (!req.fullyUnpacked())
{
throw ccReqDataTruncated;
}
}
/**
* Define placeholder command handlers for the OEM Extension bytes for the Set
* LAN Configuration Parameters and Get LAN Configuration Parameters
* commands. Using "weak" linking allows the placeholder setLanOem/getLanOem
* functions below to be overridden.
* To create handlers for your own proprietary command set:
* Create/modify a phosphor-ipmi-host Bitbake append file within your Yocto
* recipe
* Create C++ file(s) that define IPMI handler functions matching the
* function names below (i.e. setLanOem). The default name for the
* transport IPMI commands is transporthandler_oem.cpp.
* Add:
* EXTRA_OEMESON:append = "-Dtransport-oem=enabled"
* Create a do_configure:prepend()/do_install:append() method in your
* bbappend file to copy the file to the build directory.
* Add:
* PROJECT_SRC_DIR := "${THISDIR}/${PN}"
* # Copy the "strong" functions into the working directory, overriding the
* # placeholder functions.
* do_configure:prepend(){
* cp -f ${PROJECT_SRC_DIR}/transporthandler_oem.cpp ${S}
* }
*
* # Clean up after complilation has completed
* do_install:append(){
* rm -f ${S}/transporthandler_oem.cpp
* }
*
*/
/**
* Define the placeholder OEM commands as having weak linkage. Create
* setLanOem, and getLanOem functions in the transporthandler_oem.cpp
* file. The functions defined there must not have the "weak" attribute
* applied to them.
*/
RspType<> setLanOem(uint8_t channel, uint8_t parameter, message::Payload& req)
__attribute__((weak));
RspType<message::Payload>
getLanOem(uint8_t channel, uint8_t parameter, uint8_t set, uint8_t block)
__attribute__((weak));
RspType<> setLanOem(uint8_t, uint8_t, message::Payload& req)
{
req.trailingOk = true;
return response(ccParamNotSupported);
}
RspType<message::Payload> getLanOem(uint8_t, uint8_t, uint8_t, uint8_t)
{
return response(ccParamNotSupported);
}
/**
* @brief is a valid LAN channel.
*
* This function checks whether the input channel is a valid LAN channel or not.
*
* @param[in] channel: the channel number.
* @return nullopt if the channel is invalid, false if the channel is not a LAN
* channel, true if the channel is a LAN channel.
**/
std::optional<bool> isLanChannel(uint8_t channel)
{
ChannelInfo chInfo;
auto cc = getChannelInfo(channel, chInfo);
if (cc != ccSuccess)
{
return std::nullopt;
}
return chInfo.mediumType ==
static_cast<uint8_t>(EChannelMediumType::lan8032);
}
RspType<> setLanInt(Context::ptr ctx, uint4_t channelBits, uint4_t reserved1,
uint8_t parameter, message::Payload& req)
{
const uint8_t channel = convertCurrentChannelNum(
static_cast<uint8_t>(channelBits), ctx->channel);
if (reserved1 || !isValidChannel(channel))
{
lg2::error("Set Lan - Invalid field in request");
req.trailingOk = true;
return responseInvalidFieldRequest();
}
if (!isLanChannel(channel).value_or(false))
{
lg2::error("Set Lan - Not a LAN channel");
return responseInvalidFieldRequest();
}
switch (static_cast<LanParam>(parameter))
{
case LanParam::SetStatus:
{
uint2_t flag;
uint6_t rsvd;
if (req.unpack(flag, rsvd) != 0)
{
return responseReqDataLenInvalid();
}
unpackFinal(req);
if (rsvd)
{
return responseInvalidFieldRequest();
}
auto status = static_cast<SetStatus>(static_cast<uint8_t>(flag));
switch (status)
{
case SetStatus::Complete:
{
getSetStatus(channel) = status;
return responseSuccess();
}
case SetStatus::InProgress:
{
auto& storedStatus = getSetStatus(channel);
if (storedStatus == SetStatus::InProgress)
{
return response(ccParamSetLocked);
}
storedStatus = status;
return responseSuccess();
}
case SetStatus::Commit:
if (getSetStatus(channel) != SetStatus::InProgress)
{
return responseInvalidFieldRequest();
}
return responseSuccess();
}
return response(ccParamNotSupported);
}
case LanParam::AuthSupport:
{
req.trailingOk = true;
return response(ccParamReadOnly);
}
case LanParam::AuthEnables:
{
req.trailingOk = true;
return response(ccParamReadOnly);
}
case LanParam::IP:
{
if (channelCall<getEthProp<bool>>(channel, "DHCP4"))
{
return responseCommandNotAvailable();
}
auto ip = unpackT<stdplus::In4Addr>(req);
unpackFinal(req);
channelCall<reconfigureIfAddr4>(channel, ip, std::nullopt);
return responseSuccess();
}
case LanParam::IPSrc:
{
uint4_t flag;
uint4_t rsvd;
if (req.unpack(flag, rsvd) != 0)
{
return responseReqDataLenInvalid();
}
unpackFinal(req);
if (rsvd)
{
return responseInvalidFieldRequest();
}
switch (static_cast<IPSrc>(static_cast<uint8_t>(flag)))
{
case IPSrc::DHCP:
// The IPSrc IPMI command is only for IPv4
// management. Modifying IPv6 state is done using
// a completely different Set LAN Configuration
// subcommand.
channelCall<setEthProp<bool>>(channel, "DHCP4", true);
return responseSuccess();
case IPSrc::Unspecified:
case IPSrc::Static:
channelCall<setEthProp<bool>>(channel, "DHCP4", false);
return responseSuccess();
case IPSrc::BIOS:
case IPSrc::BMC:
return responseInvalidFieldRequest();
}
return response(ccParamNotSupported);
}
case LanParam::MAC:
{
auto mac = unpackT<stdplus::EtherAddr>(req);
unpackFinal(req);
channelCall<setMACProperty>(channel, mac);
return responseSuccess();
}
case LanParam::SubnetMask:
{
if (channelCall<getEthProp<bool>>(channel, "DHCP4"))
{
return responseCommandNotAvailable();
}
auto pfx = stdplus::maskToPfx(unpackT<stdplus::In4Addr>(req));
unpackFinal(req);
channelCall<reconfigureIfAddr4>(channel, std::nullopt, pfx);
return responseSuccess();
}
case LanParam::Gateway1:
{
if (channelCall<getEthProp<bool>>(channel, "DHCP4"))
{
return responseCommandNotAvailable();
}
auto gateway = unpackT<stdplus::In4Addr>(req);
unpackFinal(req);
channelCall<setGatewayProperty<AF_INET>>(channel, gateway);
return responseSuccess();
}
case LanParam::Gateway1MAC:
{
auto gatewayMAC = unpackT<stdplus::EtherAddr>(req);
unpackFinal(req);
channelCall<reconfigureGatewayMAC<AF_INET>>(channel, gatewayMAC);
return responseSuccess();
}
case LanParam::VLANId:
{
uint12_t vlanData;
uint3_t rsvd;
bool vlanEnable;
if (req.unpack(vlanData, rsvd, vlanEnable) != 0)
{
return responseReqDataLenInvalid();
}
unpackFinal(req);
if (rsvd)
{
return responseInvalidFieldRequest();
}
uint16_t vlan = static_cast<uint16_t>(vlanData);
if (!vlanEnable)
{
lastDisabledVlan[channel] = vlan;
vlan = 0;
}
else if (vlan == 0 || vlan == VLAN_VALUE_MASK)
{
return responseInvalidFieldRequest();
}
channelCall<reconfigureVLAN>(channel, vlan);
return responseSuccess();
}
case LanParam::CiphersuiteSupport:
case LanParam::CiphersuiteEntries:
case LanParam::IPFamilySupport:
{
req.trailingOk = true;
return response(ccParamReadOnly);
}
case LanParam::IPFamilyEnables:
{
uint8_t enables;
if (req.unpack(enables) != 0)
{
return responseReqDataLenInvalid();
}
unpackFinal(req);
switch (static_cast<IPFamilyEnables>(enables))
{
case IPFamilyEnables::DualStack:
return responseSuccess();
case IPFamilyEnables::IPv4Only:
case IPFamilyEnables::IPv6Only:
return response(ccParamNotSupported);
}
return response(ccParamNotSupported);
}
case LanParam::IPv6Status:
{
req.trailingOk = true;
return response(ccParamReadOnly);
}
case LanParam::IPv6StaticAddresses:
{
uint8_t set;
uint7_t rsvd;
bool enabled;
uint8_t prefix;
uint8_t status;
if (req.unpack(set, rsvd, enabled) != 0)
{
return responseReqDataLenInvalid();
}
auto ip = unpackT<stdplus::In6Addr>(req);
if (req.unpack(prefix, status) != 0)
{
return responseReqDataLenInvalid();
}
unpackFinal(req);
if (rsvd)
{
return responseInvalidFieldRequest();
}
if (enabled)
{
if (prefix < MIN_IPV6_PREFIX_LENGTH ||
prefix > MAX_IPV6_PREFIX_LENGTH)
{
return responseParmOutOfRange();
}
channelCall<reconfigureIfAddr6>(channel, set, ip, prefix);
}
else
{
channelCall<deconfigureIfAddr6>(channel, set);
}
return responseSuccess();
}
case LanParam::IPv6DynamicAddresses:
{
req.trailingOk = true;
return response(ccParamReadOnly);
}
case LanParam::IPv6RouterControl:
{
std::bitset<8> control;
constexpr uint8_t reservedRACCBits = 0xfc;
if (req.unpack(control) != 0)
{
return responseReqDataLenInvalid();
}
unpackFinal(req);
if (std::bitset<8> expected(
control & std::bitset<8>(reservedRACCBits));
expected.any())
{
return response(ccParamNotSupported);
}
bool enableRA = control[IPv6RouterControlFlag::Dynamic];
channelCall<setEthProp<bool>>(channel, "IPv6AcceptRA", enableRA);
channelCall<setEthProp<bool>>(channel, "DHCP6", enableRA);
return responseSuccess();
}
case LanParam::IPv6StaticRouter1IP:
{
auto gateway = unpackT<stdplus::In6Addr>(req);
unpackFinal(req);
channelCall<setGatewayProperty<AF_INET6>>(channel, gateway);
return responseSuccess();
}
case LanParam::IPv6StaticRouter1MAC:
{
auto mac = unpackT<stdplus::EtherAddr>(req);