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Add support for socket send/receive timeouts.

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Only the receive timeout is hooked up yet. You can change the timeout by
calling setsockopt(..., SOL_SOCKET, SO_RCVTIMEO, ...).

Use this mechanism to make /bin/ping report timeouts.
This commit is contained in:
Andreas Kling 2019-03-13 13:13:23 +01:00
parent 7bcd386338
commit 562663df7c
12 changed files with 212 additions and 12 deletions
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60
Kernel/Socket.cpp
View file

@ -60,3 +60,63 @@ KResult Socket::queue_connection_from(Socket& peer)
m_pending.append(peer);
return KSuccess;
}
KResult Socket::setsockopt(int level, int option, const void* value, socklen_t value_size)
{
ASSERT(level == SOL_SOCKET);
switch (option) {
case SO_SNDTIMEO:
if (value_size != sizeof(timeval))
return KResult(-EINVAL);
m_send_timeout = *(timeval*)value;
return KSuccess;
case SO_RCVTIMEO:
if (value_size != sizeof(timeval))
return KResult(-EINVAL);
m_receive_timeout = *(timeval*)value;
return KSuccess;
default:
kprintf("%s(%u): setsockopt() at SOL_SOCKET with unimplemented option %d\n", option);
return KResult(-ENOPROTOOPT);
}
}
KResult Socket::getsockopt(int level, int option, void* value, socklen_t* value_size)
{
ASSERT(level == SOL_SOCKET);
switch (option) {
case SO_SNDTIMEO:
if (*value_size < sizeof(timeval))
return KResult(-EINVAL);
*(timeval*)value = m_send_timeout;
*value_size = sizeof(timeval);
return KSuccess;
case SO_RCVTIMEO:
if (*value_size < sizeof(timeval))
return KResult(-EINVAL);
*(timeval*)value = m_receive_timeout;
*value_size = sizeof(timeval);
return KSuccess;
default:
kprintf("%s(%u): getsockopt() at SOL_SOCKET with unimplemented option %d\n", option);
return KResult(-ENOPROTOOPT);
}
}
void Socket::load_receive_deadline()
{
kgettimeofday(m_receive_deadline);
m_receive_deadline.tv_sec += m_receive_timeout.tv_sec;
m_receive_deadline.tv_usec += m_receive_timeout.tv_usec;
m_receive_deadline.tv_sec += (m_send_timeout.tv_usec / 1000000) * 1;
m_receive_deadline.tv_usec %= 1000000;
}
void Socket::load_send_deadline()
{
kgettimeofday(m_send_deadline);
m_send_deadline.tv_sec += m_send_timeout.tv_sec;
m_send_deadline.tv_usec += m_send_timeout.tv_usec;
m_send_deadline.tv_sec += (m_send_timeout.tv_usec / 1000000) * 1;
m_send_deadline.tv_usec %= 1000000;
}