#include <linux/module.h>
#include <linux/errno.h>
#include <linux/socket.h>
#include <linux/skbuff.h>
#include <linux/ip.h>
#include <linux/udp.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <net/fou.h>
#include <net/ip.h>
#include <net/ip6_tunnel.h>
#include <net/ip6_checksum.h>
#include <net/protocol.h>
#include <net/udp.h>
#include <net/udp_tunnel.h>

static void fou6_build_udp(struct sk_buff *skb, struct ip_tunnel_encap *e,
			   struct flowi6 *fl6, u8 *protocol, __be16 sport)
{
	struct udphdr *uh;

	skb_push(skb, sizeof(struct udphdr));
	skb_reset_transport_header(skb);

	uh = udp_hdr(skb);

	uh->dest = e->dport;
	uh->source = sport;
	uh->len = htons(skb->len);
	udp6_set_csum(!(e->flags & TUNNEL_ENCAP_FLAG_CSUM6), skb,
		      &fl6->saddr, &fl6->daddr, skb->len);

	*protocol = IPPROTO_UDP;
}

int fou6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
		      u8 *protocol, struct flowi6 *fl6)
{
	__be16 sport;
	int err;
	int type = e->flags & TUNNEL_ENCAP_FLAG_CSUM6 ?
		SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;

	err = __fou_build_header(skb, e, protocol, &sport, type);
	if (err)
		return err;

	fou6_build_udp(skb, e, fl6, protocol, sport);

	return 0;
}
EXPORT_SYMBOL(fou6_build_header);

int gue6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
		      u8 *protocol, struct flowi6 *fl6)
{
	__be16 sport;
	int err;
	int type = e->flags & TUNNEL_ENCAP_FLAG_CSUM6 ?
		SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;

	err = __gue_build_header(skb, e, protocol, &sport, type);
	if (err)
		return err;

	fou6_build_udp(skb, e, fl6, protocol, sport);

	return 0;
}
EXPORT_SYMBOL(gue6_build_header);

#if IS_ENABLED(CONFIG_IPV6_FOU_TUNNEL)

static const struct ip6_tnl_encap_ops fou_ip6tun_ops = {
	.encap_hlen = fou_encap_hlen,
	.build_header = fou6_build_header,
};

static const struct ip6_tnl_encap_ops gue_ip6tun_ops = {
	.encap_hlen = gue_encap_hlen,
	.build_header = gue6_build_header,
};

static int ip6_tnl_encap_add_fou_ops(void)
{
	int ret;

	ret = ip6_tnl_encap_add_ops(&fou_ip6tun_ops, TUNNEL_ENCAP_FOU);
	if (ret < 0) {
		pr_err("can't add fou6 ops\n");
		return ret;
	}

	ret = ip6_tnl_encap_add_ops(&gue_ip6tun_ops, TUNNEL_ENCAP_GUE);
	if (ret < 0) {
		pr_err("can't add gue6 ops\n");
		ip6_tnl_encap_del_ops(&fou_ip6tun_ops, TUNNEL_ENCAP_FOU);
		return ret;
	}

	return 0;
}

static void ip6_tnl_encap_del_fou_ops(void)
{
	ip6_tnl_encap_del_ops(&fou_ip6tun_ops, TUNNEL_ENCAP_FOU);
	ip6_tnl_encap_del_ops(&gue_ip6tun_ops, TUNNEL_ENCAP_GUE);
}

#else

static int ip6_tnl_encap_add_fou_ops(void)
{
	return 0;
}

static void ip6_tnl_encap_del_fou_ops(void)
{
}

#endif

static int __init fou6_init(void)
{
	int ret;

	ret = ip6_tnl_encap_add_fou_ops();

	return ret;
}

static void __exit fou6_fini(void)
{
	ip6_tnl_encap_del_fou_ops();
}

module_init(fou6_init);
module_exit(fou6_fini);
MODULE_AUTHOR("Tom Herbert <therbert@google.com>");
MODULE_LICENSE("GPL");
8adf5c48c421a4ca76468'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>perf</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>arch</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/xtensa?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>xtensa</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/xtensa/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>Makefile</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='dd86e373e09fb16b83e8adf5c48c421a4ca76468'/><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>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 23:58:38 +0100</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2017-02-01 08:37:27 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/xtensa/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>dd86e373e09fb16b83e8adf5c48c421a4ca76468</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/arch/xtensa/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>55703c2ea8584e303e342090614e0aab3509ab21</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/arch/xtensa/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>tools/perf/arch/xtensa/Makefile</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/xtensa/Makefile?id=0b3589be9b98994ce3d5aeca52445d1f5627c4ba'>0b3589be9b98994ce3d5aeca52445d1f5627c4ba</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/arch/xtensa/Makefile?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468&amp;id2=0b3589be9b98994ce3d5aeca52445d1f5627c4ba'>diff</a>)</td></tr></table>
<div class='commit-subject'>perf/x86/intel/rapl: Make package handling more robust</div><div class='commit-msg'>The package management code in RAPL relies on package mapping being
available before a CPU is started. This changed with:

  9d85eb9119f4 ("x86/smpboot: Make logical package management more robust")

because the ACPI/BIOS information turned out to be unreliable, but that
left RAPL in broken state. This was not noticed because on a regular boot
all CPUs are online before RAPL is initialized.

A possible fix would be to reintroduce the mess which allocates a package
data structure in CPU prepare and when it turns out to already exist in
starting throw it away later in the CPU online callback. But that's a
horrible hack and not required at all because RAPL becomes functional for
perf only in the CPU online callback. That's correct because user space is
not yet informed about the CPU being onlined, so nothing caan rely on RAPL
being available on that particular CPU.

Move the allocation to the CPU online callback and simplify the hotplug
handling. At this point the package mapping is established and correct.

This also adds a missing check for available package data in the
event_init() function.

Reported-by: Yasuaki Ishimatsu &lt;yasu.isimatu@gmail.com&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Alexander Shishkin &lt;alexander.shishkin@linux.intel.com&gt;
Cc: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Cc: Jiri Olsa &lt;jolsa@redhat.com&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Sebastian Siewior &lt;bigeasy@linutronix.de&gt;
Cc: Stephane Eranian &lt;eranian@google.com&gt;
Cc: Vince Weaver &lt;vincent.weaver@maine.edu&gt;
Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust")
Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>Diffstat</a> (limited to 'tools/perf/arch/xtensa/Makefile')</div><table summary='diffstat' class='diffstat'>