/*
 * 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 ')'; }
"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"); }

%%
t/include/crypto?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'>crypto</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/internal?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'>internal</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/internal/rng.h?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'>rng.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'/><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>Tony Lindgren &lt;tony@atomide.com&gt;</td><td class='right'>2017-01-19 08:49:07 -0800</td></tr>
<tr><th>committer</th><td>Vinod Koul &lt;vinod.koul@intel.com&gt;</td><td class='right'>2017-01-25 11:29:11 +0530</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/internal/rng.h?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'>ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/crypto/internal/rng.h?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'>139fc7e29f97d6bb6c4dca2a97be2dc3f824bd51</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/crypto/internal/rng.h?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'>include/crypto/internal/rng.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/crypto/internal/rng.h?id=49def1853334396f948dcb4cedb9347abb318df5'>49def1853334396f948dcb4cedb9347abb318df5</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/crypto/internal/rng.h?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b&amp;id2=49def1853334396f948dcb4cedb9347abb318df5'>diff</a>)</td></tr></table>
<div class='commit-subject'>dmaengine: cppi41: Fix runtime PM timeouts with USB mass storage</div><div class='commit-msg'>Commit fdea2d09b997 ("dmaengine: cppi41: Add basic PM runtime support")
added runtime PM support for cppi41, but had corner case issues. Some of
the issues were fixed with commit 098de42ad670 ("dmaengine: cppi41: Fix
unpaired pm runtime when only a USB hub is connected"). That fix however
caused a new regression where we can get error -115 messages with USB on
BeagleBone when connecting a USB mass storage device to a hub.

This is because when connecting a USB mass storage device to a hub, the
initial DMA transfers can take over 200ms to complete and cppi41
autosuspend delay times out.

To fix the issue, we want to implement refcounting for chan_busy array
that contains the active dma transfers. Increasing the autosuspend delay
won't help as that the delay could be potentially seconds, and it's best
to let the USB subsystem to deal with the timeouts on errors.

The earlier attempt for runtime PM was buggy as the pm_runtime_get/put()
calls could get unpaired easily as they did not follow the state of
the chan_busy array as described in commit 098de42ad670 ("dmaengine:
cppi41: Fix unpaired pm runtime when only a USB hub is connected".

Let's fix the issue by adding pm_runtime_get() to where a new transfer
is added to the chan_busy array, and calls to pm_runtime_put() where
chan_busy array entry is cleared. This prevents any autosuspend timeouts
from happening while dma transfers are active.

Fixes: 098de42ad670 ("dmaengine: cppi41: Fix unpaired pm runtime when
only a USB hub is connected")
Fixes: fdea2d09b997 ("dmaengine: cppi41: Add basic PM runtime support")
Cc: Andy Shevchenko &lt;andy.shevchenko@gmail.com&gt;
Cc: Bin Liu &lt;b-liu@ti.com&gt;
Cc: Grygorii Strashko &lt;grygorii.strashko@ti.com&gt;
Cc: Kevin Hilman &lt;khilman@baylibre.com&gt;
Cc: Patrick Titiano &lt;ptitiano@baylibre.com&gt;
Cc: Sergei Shtylyov &lt;sergei.shtylyov@cogentembedded.com&gt;
Signed-off-by: Tony Lindgren &lt;tony@atomide.com&gt;
Tested-by: Bin Liu &lt;b-liu@ti.com&gt;
Signed-off-by: Vinod Koul &lt;vinod.koul@intel.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'>Diffstat</a> (limited to 'include/crypto/internal/rng.h')</div><table summary='diffstat' class='diffstat'>