Date: Thu, 5 May 2011 02:38:08 +0000 (UTC) From: Navdeep Parhar <np@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/cxgbe t4_sge.c src/sys/modules/cxgbe/if_cxgbe Makefile Message-ID: <201105050238.p452cUn5088632@repoman.freebsd.org>
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np 2011-05-05 02:38:08 UTC
FreeBSD src repository
Modified files:
sys/dev/cxgbe t4_sge.c
sys/modules/cxgbe/if_cxgbe Makefile
Log:
SVN rev 221477 on 2011-05-05 02:38:08Z by np
T4 packet timestamps.
Reference code that shows how to get a packet's timestamp out of
cxgbe(4). Disabled by default because we don't have a standard way
today to pass this information up the stack.
The timestamp is 60 bits wide and each increment represents 1 tick of
the T4's core clock. As an example, the timestamp granularity is ~4.4ns
for this card:
# sysctl dev.t4nex.0.core_clock
dev.t4nex.0.core_clock: 228125
MFC after: 1 week
Revision Changes Path
1.18 +22 -1 src/sys/dev/cxgbe/t4_sge.c
1.2 +3 -0 src/sys/modules/cxgbe/if_cxgbe/Makefile
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