#ifndef TRAFGEN_PROTO_H
#define TRAFGEN_PROTO_H

#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>

struct proto_ctx {
	const char *dev;
};

enum proto_id {
	PROTO_NONE,
	PROTO_ETH,
	PROTO_VLAN,
	PROTO_ARP,
	PROTO_MPLS,
	PROTO_IP4,
	PROTO_IP6,
	PROTO_UDP,
	PROTO_TCP,
};

enum proto_layer {
	PROTO_L0, /* invalid layer */
	PROTO_L2,
	PROTO_L3,
	PROTO_L4,
};

struct proto_field {
	uint32_t id;
	size_t len;
	uint32_t shift;
	uint32_t mask;
	/* might be negative (e.g. VLAN TPID field) */
	int16_t offset;

	bool is_set;
	uint16_t pkt_offset;
};

struct proto_hdr {
	enum proto_id id;
	enum proto_layer layer;

	struct proto_hdr *next;
	struct proto_ctx *ctx;
	uint16_t pkt_offset;
	struct proto_field *fields;
	size_t fields_count;

	void (*header_init)(struct proto_hdr *hdr);
	void (*header_finish)(struct proto_hdr *hdr);
	void (*packet_finish)(struct proto_hdr *hdr);
	void (*set_next_proto)(struct proto_hdr *hdr, enum proto_id pid);
};

extern void protos_init(const char *dev);
extern void proto_header_register(struct proto_hdr *hdr);

extern struct proto_hdr *proto_header_init(enum proto_id pid);
extern void proto_header_finish(struct proto_hdr *hdr);
extern void proto_packet_finish(void);
extern struct proto_hdr *proto_lower_default_add(struct proto_hdr *hdr,
						 enum proto_id pid);

extern struct proto_hdr *proto_lower_header(struct proto_hdr *hdr);
extern uint8_t *proto_header_ptr(struct proto_hdr *hdr);

extern void proto_header_fields_add(struct proto_hdr *hdr,
				    const struct proto_field *fields,
				    size_t count);

extern bool proto_field_is_set(struct proto_hdr *hdr, uint32_t fid);
extern void proto_field_set_bytes(struct proto_hdr *hdr, uint32_t fid,
				  uint8_t *bytes);
extern void proto_field_set_u8(struct proto_hdr *hdr, uint32_t fid, uint8_t val);
extern uint8_t proto_field_get_u8(struct proto_hdr *hdr, uint32_t fid);
extern void proto_field_set_u16(struct proto_hdr *hdr, uint32_t fid, uint16_t val);
extern uint16_t proto_field_get_u16(struct proto_hdr *hdr, uint32_t fid);
extern void proto_field_set_u32(struct proto_hdr *hdr, uint32_t fid, uint32_t val);
extern uint32_t proto_field_get_u32(struct proto_hdr *hdr, uint32_t fid);

extern void proto_field_set_default_bytes(struct proto_hdr *hdr, uint32_t fid,
					  uint8_t *bytes);
extern void proto_field_set_default_u8(struct proto_hdr *hdr, uint32_t fid,
				       uint8_t val);
extern void proto_field_set_default_u16(struct proto_hdr *hdr, uint32_t fid,
				        uint16_t val);
extern void proto_field_set_default_u32(struct proto_hdr *hdr, uint32_t fid,
				        uint32_t val);

extern void proto_field_set_be16(struct proto_hdr *hdr, uint32_t fid, uint16_t val);
extern void proto_field_set_be32(struct proto_hdr *hdr, uint32_t fid, uint32_t val);

extern void proto_field_set_default_be16(struct proto_hdr *hdr, uint32_t fid,
					 uint16_t val);
extern void proto_field_set_default_be32(struct proto_hdr *hdr, uint32_t fid,
					 uint32_t val);

extern void proto_field_set_dev_mac(struct proto_hdr *hdr, uint32_t fid);
extern void proto_field_set_default_dev_mac(struct proto_hdr *hdr, uint32_t fid);

extern void proto_field_set_dev_ipv4(struct proto_hdr *hdr, uint32_t fid);
extern void proto_field_set_default_dev_ipv4(struct proto_hdr *hdr, uint32_t fid);

#endif /* TRAFGEN_PROTO_H */
<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/sound?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>6e978b22efa1db9f6e71b24440b5f1d93e968ee3</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>c666f7a26b860674848949e39a610222b0723f89</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>sound</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound?id=3c223c19aea85d3dda1416c187915f4a30b04b1f'>3c223c19aea85d3dda1416c187915f4a30b04b1f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound?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/?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>Diffstat</a> (limited to 'sound')</div><table summary='diffstat' class='diffstat'>