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ntp: add support for multiple suspended sockets

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With some hardware it takes milliseconds to get the HW TX timestamp.

Rework the code to handle multiple suspended client-only sockets at the
same time in order to allow longer timeouts, which may overlap for
different sources. Instead of waiting for the first read event simply
suspend the socket and create timeout when the HW TX timestamp is
requested.
This commit is contained in:
Miroslav Lichvar
2023-03-08 17:07:38 +01:00
parent c3e4e3e47a
commit 3ea3e0efd7
3 changed files with 73 additions and 57 deletions
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5
ntp_io.c
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@@ -467,11 +467,6 @@ read_from_socket(int sock_fd, int event, void *anything)
SCK_Message *messages;
int i, received, flags = 0;
#ifdef HAVE_LINUX_TIMESTAMPING
if (NIO_Linux_ProcessEvent(sock_fd, event))
return;
#endif
if (event == SCH_FILE_EXCEPTION) {
#ifdef HAVE_LINUX_TIMESTAMPING
flags |= SCK_FLAG_MSG_ERRQUEUE;