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net/icmp: cast from integer to 'Code' enum

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Add a function to the header for doing this cast.

Ref #4236
This commit is contained in:
Martin Stein 2021-08-03 13:16:00 +02:00 committed by Christian Helmuth
parent d7a27c448d
commit b0e558f486
1 changed files with 59 additions and 2 deletions
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61
repos/os/include/net/icmp.h
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@ -51,10 +51,67 @@ class Net::Icmp_packet
enum class Code
{
DST_NET_UNREACHABLE = 0,
ECHO_REQUEST = 0,
ECHO_REPLY = 0,
DST_HOST_UNREACHABLE = 1,
DST_PROTOCOL_UNREACHABLE = 2,
DST_PORT_UNREACHABLE = 3,
FRAGM_REQUIRED_AND_DF_FLAG_SET = 4,
SOURCE_ROUTE_FAILED = 5,
DST_NET_UNKNOWN = 6,
DST_HOST_UNKNOWN = 7,
SOURCE_HOST_ISOLATED = 8,
NET_ADMINISTRATIVELY_PROHIB = 9,
HOST_ADMINISTRATIVELY_PROHIB = 10,
NET_UNREACHABLE_FOR_TOS = 11,
HOST_UNREACHABLE_FOR_TOS = 12,
COM_ADMINISTRATIVELY_PROHIB = 13,
HOST_PRECEDENCE_VIOLATION = 14,
PRECEDENCE_CUTOFF_IN_EFFECT = 15,
ECHO_REQUEST = 0,
ECHO_REPLY = 0,
INVALID = 255,
};
static Code code_from_uint8(Type type,
Genode::uint8_t code)
{
switch (type) {
case Type::DST_UNREACHABLE:
switch (code) {
case 0: return Code::DST_NET_UNREACHABLE;
case 1: return Code::DST_HOST_UNREACHABLE;
case 2: return Code::DST_PROTOCOL_UNREACHABLE;
case 3: return Code::DST_PORT_UNREACHABLE;
case 4: return Code::FRAGM_REQUIRED_AND_DF_FLAG_SET;
case 5: return Code::SOURCE_ROUTE_FAILED;
case 6: return Code::DST_NET_UNKNOWN;
case 7: return Code::DST_HOST_UNKNOWN;
case 8: return Code::SOURCE_HOST_ISOLATED;
case 9: return Code::NET_ADMINISTRATIVELY_PROHIB;
case 10: return Code::HOST_ADMINISTRATIVELY_PROHIB;
case 11: return Code::NET_UNREACHABLE_FOR_TOS;
case 12: return Code::HOST_UNREACHABLE_FOR_TOS;
case 13: return Code::COM_ADMINISTRATIVELY_PROHIB;
case 14: return Code::HOST_PRECEDENCE_VIOLATION;
case 15: return Code::PRECEDENCE_CUTOFF_IN_EFFECT;
default: break;
}
break;
case Type::ECHO_REPLY:
switch (code) {
case 0: return Code::ECHO_REPLY;
default: break;
}
break;
case Type::ECHO_REQUEST:
switch (code) {
case 0: return Code::ECHO_REQUEST;
default: break;
}
break;
}
return Code::INVALID;
}
void update_checksum(Genode::size_t data_sz);
bool checksum_error(Genode::size_t data_sz) const;