igb: Add support for CBS offload - linux-dev - Linux kernel development work

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author	Andre Guedes <andre.guedes@intel.com>	2017-10-16 18:01:28 -0700
committer	Jeff Kirsher <jeffrey.t.kirsher@intel.com>	2017-10-27 09:49:36 -0700
commit	05f9d3e1ae6eaf7507e3bd95b0eef2acd4b84ea8 (patch)
tree	87afcd848cac9a27f73872c088bc065d18b8e376 /tools/perf/scripts/python/bin
parent	net/sched: Add support for HW offloading for CBS (diff)

igb: Add support for CBS offload

This patch adds support for Credit-Based Shaper (CBS) qdisc offload from Traffic Control system. This support enable us to leverage the Forwarding and Queuing for Time-Sensitive Streams (FQTSS) features from Intel i210 Ethernet Controller. FQTSS is the former 802.1Qav standard which was merged into 802.1Q in 2014. It enables traffic prioritization and bandwidth reservation via the Credit-Based Shaper which is implemented in hardware by i210 controller. The patch introduces the igb_setup_tc() function which implements the support for CBS qdisc hardware offload in the IGB driver. CBS offload is the only traffic control offload supported by the driver at the moment. FQTSS transmission mode from i210 controller is automatically enabled by the IGB driver when the CBS is enabled for the first hardware queue. Likewise, FQTSS mode is automatically disabled when CBS is disabled for the last hardware queue. Changing FQTSS mode requires NIC reset. FQTSS feature is supported by i210 controller only. Signed-off-by: Andre Guedes <andre.guedes@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Tested-by: Henrik Austad <henrik@austad.us> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Diffstat (limited to 'tools/perf/scripts/python/bin')

0 files changed, 0 insertions, 0 deletions

/* Copyright (C) 1991, 1995, 1997, 1998, 2004, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <libioP.h> #include <stdarg.h> #include <stdio.h> /* Write formatted output into S, according to the format string FORMAT, writing no more than MAXLEN characters. */ /* VARARGS5 */ int ___snprintf_chk (char *s, size_t maxlen, int flags, size_t slen, const char *format, ...) { va_list arg; int done; va_start (arg, format); done = __vsnprintf_chk (s, maxlen, flags, slen, format, arg); va_end (arg); return done; } ldbl_strong_alias (___snprintf_chk, __snprintf_chk)


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