acadia-newlib/newlib/libc
kib 7ff81234c4 Add a place for a driver to report rx timestamps
in nanoseconds from boot for the received packets.

The rcv_tstmp field overlaps the place of Ln header length indicators,
not used by received packets.  The basic pkthdr rearrangement change
in sys/mbuf.h was provided by gallatin.

There are two accompanying M_ flags: M_TSTMP means that there is the
timestamp (and it was generated by hardware).

Another flag M_TSTMP_HPREC indicates that the timestamp is
high-precision.  Practically M_TSTMP_HPREC means that hardware
provided additional precision comparing with the stamps when the flag
is not set.  E.g., for ConnectX all packets are stamped by hardware
when PCIe transaction to write out the completion descriptor is
performed, but PTP packet are stamped on port.  For Intel cards, when
PTP assist is enabled, only PTP packets are stamped in the limited
number of registers, so if Intel cards ever start support this
mechanism, they would always set M_TSTMP | M_TSTMP_HPREC if hardware
timestamp is present for the given packet.

Add IFCAP_HWRXTSTMP interface capability to indicate the support for
hardware rx timestamping, and ifconfig(8) command to toggle it.

Based on the patch by:	gallatin
Reviewed by:	gallatin (previous version), hselasky
Sponsored by:	Mellanox Technologies
MFC after:	2 weeks (? mbuf KBI issue)
X-Differential revision:	https://reviews.freebsd.org/D12638
2018-08-24 15:00:02 +02:00
..
argz ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
ctype ctype: Avoid GCC note in towctrans_l.c 2018-07-30 10:47:57 +02:00
errno makedoc: make errors visible 2017-12-07 11:54:11 +00:00
iconv ansification: remove _EXFUN, _EXFUN_NOTHROW 2018-01-17 11:47:29 -06:00
include Add __nl_item to <sys/_types.h> and use it 2018-08-24 15:00:01 +02:00
locale newlib: newlocale: fix typo rendering ctype_ptr invalid 2018-08-08 09:26:32 +02:00
machine strcmp.S: Improve performance for misaligned strings 2018-07-13 13:27:54 +02:00
misc RISC-V: Do not use _init/_fini 2018-07-30 10:47:57 +02:00
posix newlib: wordexp: drop dangerous fprintf 2018-08-08 10:50:19 +02:00
reent ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
search Reduce qsort stack consumption 2018-03-16 10:21:23 +01:00
signal Fix newlib functions perror()/psignal() not to use writev(). 2018-07-05 15:33:49 -04:00
ssp makedoc: make errors visible 2017-12-07 11:54:11 +00:00
stdio newlib: fix various gcc warnings 2018-08-08 10:50:19 +02:00
stdio64 ansification: remove _EXFNPTR, _EXPARM 2018-01-17 11:47:27 -06:00
stdlib Fix strtof ("-nan") returns positive NaN 2018-08-16 13:17:44 +02:00
string fix/enhance Unicode table generation scripts 2018-03-14 10:44:32 +01:00
sys Add a place for a driver to report rx timestamps 2018-08-24 15:00:02 +02:00
syscalls ansification: remove _HAVE_STDC 2018-01-17 11:47:30 -06:00
time newlib: strftime: fix over-enthusiastic fix from 0283642f35 2018-08-08 23:59:34 +02:00
unix Fix comparison between two character arrays 2018-07-30 09:36:49 +02:00
xdr ansification: remove _EXFUN, _EXFUN_NOTHROW 2018-01-17 11:47:29 -06:00
Makefile.am ssp: add build infrastructure 2017-11-29 11:25:46 -06:00
Makefile.in ssp: add build infrastructure 2017-11-29 11:25:46 -06:00
aclocal.m4 Fix up errors in regenerated files for 2.3.0 release. 2016-01-04 12:57:31 -05:00
configure Add nvptx port. 2018-04-13 15:42:37 -04:00
configure.in ssp: add build infrastructure 2017-11-29 11:25:46 -06:00
libc.in.xml ssp: add documentation 2017-11-29 11:25:45 -06:00
libc.texinfo ssp: add documentation 2017-11-29 11:25:45 -06:00
saber import newlib-2000-02-17 snapshot 2000-02-17 19:39:52 +00:00
sys.tex Don't include stdio64 functions in reentrant syscalls menu when not bulding stdio64. 2015-08-03 09:54:33 +01:00