/*
 * netsniff-ng - the packet sniffing beast
 * By Daniel Borkmann <daniel@netsniff-ng.org>
 * Copyright 2012 Daniel Borkmann <dborkma@tik.ee.ethz.ch>,
 * Swiss federal institute of technology (ETH Zurich)
 * Subject to the GPL, version 2.
 */

/* lex-func-prefix: yy */

%{

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#include "bpf_parser.tab.h"
#include "xmalloc.h"

extern void yyerror(const char *);

%}

%option align
%option nounput
%option noyywrap
%option noreject
%option 8bit
%option caseless
%option noinput
%option nodefault

number_oct	([0][0-9]+)
number_hex	([0][x][a-fA-F0-9]+)
number_bin	([0][b][0-1]+)
number_dec	(([0])|([-+]?[1-9][0-9]*))

label		[a-zA-Z_][a-zA-Z0-9_]+

%%

"ldb"		{ return OP_LDB; }
"ldh"		{ return OP_LDH; }
"ld"		{ return OP_LD; }
"ldi"		{ return OP_LDI; }
"ldx"		{ return OP_LDX; }
"ldxi"		{ return OP_LDXI; }
"ldxb"		{ return OP_LDXB; }
"st"		{ return OP_ST; }
"stx"		{ return OP_STX; }
"jmp"|"ja"	{ return OP_JMP; }
"jeq"		{ return OP_JEQ; }
"jneq"|"jne"	{ return OP_JNEQ; }
"jlt"		{ return OP_JLT; }
"jle"		{ return OP_JLE; }
"jgt"		{ return OP_JGT; }
"jge"		{ return OP_JGE; }
"jset"		{ return OP_JSET; }
"add"		{ return OP_ADD; }
"sub"		{ return OP_SUB; }
"mul"		{ return OP_MUL; }
"div"		{ return OP_DIV; }
"mod"		{ return OP_MOD; }
"neg"		{ return OP_NEG; }
"and"		{ return OP_AND; }
"xor"		{ return OP_XOR; }
"or"		{ return OP_OR; }
"lsh"		{ return OP_LSH; }
"rsh"		{ return OP_RSH; }
"ret"		{ return OP_RET; }
"tax"		{ return OP_TAX; }
"txa"		{ return OP_TXA; }

"#"?("len"|"pktlen")	{ return K_PKT_LEN; }
"#"?("pto"|"proto")	{ return K_PROTO; }
"#"?("type")		{ return K_TYPE; }
"#"?("poff")		{ return K_POFF; }
"#"?("ifx"|"ifidx")	{ return K_IFIDX; }
"#"?("nla")		{ return K_NLATTR; }
"#"?("nlan")		{ return K_NLATTR_NEST; }
"#"?("mark")		{ return K_MARK; }
"#"?("que"|"queue"|"Q")	{ return K_QUEUE; }
"#"?("hat"|"hatype")	{ return K_HATYPE; }
"#"?("rxh"|"rxhash")	{ return K_RXHASH; }
"#"?("cpu")		{ return K_CPU; }
"#"?("vlant"|"vlan_tci") { return K_VLANT; }
"#"?("vlana"|"vlan_acc") { return K_VLANP; }
"#"?("vlanp") 		 { return K_VLANP; }

":"		{ return ':'; }
","		{ return ','; }
"#"		{ return '#'; }
"%"		{ return '%'; }
"["		{ return '['; }
"]"		{ return ']'; }
"("		{ return '('; }
")"		{ return ')'; }
"x"		{ return 'x'; }
"a"		{ return 'a'; }
"+"		{ return '+'; }
"M"		{ return 'M'; }
"*"		{ return '*'; }
"&"		{ return '&'; }

{number_hex}	{ yylval.number = strtoul(yytext, NULL, 16);
		  return number; }

{number_oct}	{ yylval.number = strtol(yytext + 1, NULL, 8);
		  return number; }

{number_bin}	{ yylval.number = strtol(yytext + 2, NULL, 2);
		  return number; }

{number_dec}	{ yylval.number = strtol(yytext, NULL, 10);
		  return number; }

{label}		{ yylval.label = xstrdup(yytext);
		  return label; }

"/*"([^\*]|\*[^/])*"*/" { /* NOP */ }
";"[^\n]*	{/* NOP */}
^#.*		{/* NOP */}
"\n"		{ yylineno++; }
[ \t]+		{/* NOP */ }
.		{ printf("Unknown character '%s'", yytext);
		  yyerror("lex Unknown character"); }

%%
/net-next.git/commit/net?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/atm?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>atm</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/atm/proc.c?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>proc.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='6e978b22efa1db9f6e71b24440b5f1d93e968ee3'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Srinivas Pandruvada &lt;srinivas.pandruvada@linux.intel.com&gt;</td><td class='right'>2017-02-03 14:18:39 -0800</td></tr>
<tr><th>committer</th><td>Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;</td><td class='right'>2017-02-04 00:11:08 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/atm/proc.c?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>6e978b22efa1db9f6e71b24440b5f1d93e968ee3</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/atm/proc.c?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>c666f7a26b860674848949e39a610222b0723f89</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/atm/proc.c?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>net/atm/proc.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/atm/proc.c?h=nds-private-remove&amp;id=3c223c19aea85d3dda1416c187915f4a30b04b1f'>3c223c19aea85d3dda1416c187915f4a30b04b1f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/atm/proc.c?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3&amp;id2=3c223c19aea85d3dda1416c187915f4a30b04b1f'>diff</a>)</td></tr></table>
<div class='commit-subject'>cpufreq: intel_pstate: Disable energy efficiency optimization</div><div class='commit-msg'>Some Kabylake desktop processors may not reach max turbo when running in
HWP mode, even if running under sustained 100% utilization.

This occurs when the HWP.EPP (Energy Performance Preference) is set to
"balance_power" (0x80) -- the default on most systems.

It occurs because the platform BIOS may erroneously enable an
energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not
recommended to be enabled on this SKU.

On the failing systems, this BIOS issue was not discovered when the
desktop motherboard was tested with Windows, because the BIOS also
neglects to provide the ACPI/CPPC table, that Windows requires to enable
HWP, and so Windows runs in legacy P-state mode, where this setting has
no effect.

Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and
so it runs in HWP mode, exposing this incorrect BIOS configuration.

There are several ways to address this problem.

First, Linux can also run in legacy P-state mode on this system.
As intel_pstate is how Linux enables HWP, booting with
"intel_pstate=disable"
will run in acpi-cpufreq/ondemand legacy p-state mode.

Or second, the "performance" governor can be used with intel_pstate,
which will modify HWP.EPP to 0.

Or third, starting in 4.10, the
/sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference
attribute in can be updated from "balance_power" to "performance".

Or fourth, apply this patch, which fixes the erroneous setting of
MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default
configuration to function as designed.

Signed-off-by: Srinivas Pandruvada &lt;srinivas.pandruvada@linux.intel.com&gt;
Reviewed-by: Len Brown &lt;len.brown@intel.com&gt;
Cc: 4.6+ &lt;stable@vger.kernel.org&gt; # 4.6+
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>Diffstat</a> (limited to 'net/atm/proc.c')</div><table summary='diffstat' class='diffstat'>