/* Copyright (c) 2016 Facebook
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 */
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/version.h>
#include <uapi/linux/bpf.h>
#include "bpf_helpers.h"

#define MAX_ENTRIES 1000

struct bpf_map_def SEC("maps") hash_map = {
	.type = BPF_MAP_TYPE_HASH,
	.key_size = sizeof(u32),
	.value_size = sizeof(long),
	.max_entries = MAX_ENTRIES,
};

struct bpf_map_def SEC("maps") lru_hash_map = {
	.type = BPF_MAP_TYPE_LRU_HASH,
	.key_size = sizeof(u32),
	.value_size = sizeof(long),
	.max_entries = 10000,
};

struct bpf_map_def SEC("maps") percpu_lru_hash_map = {
	.type = BPF_MAP_TYPE_LRU_HASH,
	.key_size = sizeof(u32),
	.value_size = sizeof(long),
	.max_entries = 10000,
	.map_flags = BPF_F_NO_COMMON_LRU,
};

struct bpf_map_def SEC("maps") percpu_hash_map = {
	.type = BPF_MAP_TYPE_PERCPU_HASH,
	.key_size = sizeof(u32),
	.value_size = sizeof(long),
	.max_entries = MAX_ENTRIES,
};

struct bpf_map_def SEC("maps") hash_map_alloc = {
	.type = BPF_MAP_TYPE_HASH,
	.key_size = sizeof(u32),
	.value_size = sizeof(long),
	.max_entries = MAX_ENTRIES,
	.map_flags = BPF_F_NO_PREALLOC,
};

struct bpf_map_def SEC("maps") percpu_hash_map_alloc = {
	.type = BPF_MAP_TYPE_PERCPU_HASH,
	.key_size = sizeof(u32),
	.value_size = sizeof(long),
	.max_entries = MAX_ENTRIES,
	.map_flags = BPF_F_NO_PREALLOC,
};

struct bpf_map_def SEC("maps") lpm_trie_map_alloc = {
	.type = BPF_MAP_TYPE_LPM_TRIE,
	.key_size = 8,
	.value_size = sizeof(long),
	.max_entries = 10000,
	.map_flags = BPF_F_NO_PREALLOC,
};

SEC("kprobe/sys_getuid")
int stress_hmap(struct pt_regs *ctx)
{
	u32 key = bpf_get_current_pid_tgid();
	long init_val = 1;
	long *value;

	bpf_map_update_elem(&hash_map, &key, &init_val, BPF_ANY);
	value = bpf_map_lookup_elem(&hash_map, &key);
	if (value)
		bpf_map_delete_elem(&hash_map, &key);

	return 0;
}

SEC("kprobe/sys_geteuid")
int stress_percpu_hmap(struct pt_regs *ctx)
{
	u32 key = bpf_get_current_pid_tgid();
	long init_val = 1;
	long *value;

	bpf_map_update_elem(&percpu_hash_map, &key, &init_val, BPF_ANY);
	value = bpf_map_lookup_elem(&percpu_hash_map, &key);
	if (value)
		bpf_map_delete_elem(&percpu_hash_map, &key);
	return 0;
}
SEC("kprobe/sys_getgid")
int stress_hmap_alloc(struct pt_regs *ctx)
{
	u32 key = bpf_get_current_pid_tgid();
	long init_val = 1;
	long *value;

	bpf_map_update_elem(&hash_map_alloc, &key, &init_val, BPF_ANY);
	value = bpf_map_lookup_elem(&hash_map_alloc, &key);
	if (value)
		bpf_map_delete_elem(&hash_map_alloc, &key);
	return 0;
}

SEC("kprobe/sys_getegid")
int stress_percpu_hmap_alloc(struct pt_regs *ctx)
{
	u32 key = bpf_get_current_pid_tgid();
	long init_val = 1;
	long *value;

	bpf_map_update_elem(&percpu_hash_map_alloc, &key, &init_val, BPF_ANY);
	value = bpf_map_lookup_elem(&percpu_hash_map_alloc, &key);
	if (value)
		bpf_map_delete_elem(&percpu_hash_map_alloc, &key);
	return 0;
}

SEC("kprobe/sys_getpid")
int stress_lru_hmap_alloc(struct pt_regs *ctx)
{
	u32 key = bpf_get_prandom_u32();
	long val = 1;

	bpf_map_update_elem(&lru_hash_map, &key, &val, BPF_ANY);

	return 0;
}

SEC("kprobe/sys_getppid")
int stress_percpu_lru_hmap_alloc(struct pt_regs *ctx)
{
	u32 key = bpf_get_prandom_u32();
	long val = 1;

	bpf_map_update_elem(&percpu_lru_hash_map, &key, &val, BPF_ANY);

	return 0;
}

SEC("kprobe/sys_gettid")
int stress_lpm_trie_map_alloc(struct pt_regs *ctx)
{
	union {
		u32 b32[2];
		u8 b8[8];
	} key;
	unsigned int i;

	key.b32[0] = 32;
	key.b8[4] = 192;
	key.b8[5] = 168;
	key.b8[6] = 0;
	key.b8[7] = 1;

#pragma clang loop unroll(full)
	for (i = 0; i < 32; ++i)
		bpf_map_lookup_elem(&lpm_trie_map_alloc, &key);

	return 0;
}

char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;
n 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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-02 13:20:23 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-02 13:20:23 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/core/devices.c?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a'>c67b42f3a3f03e68bf915f32c8f7be0b726fec1a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/core/devices.c?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a'>9abf8c8a276cd5e8119e5c50f53afc220648008e</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/core/devices.c?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a'>drivers/usb/core/devices.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/core/devices.c?id=027eb72cbcf81561867a764074964e2ce9828398'>027eb72cbcf81561867a764074964e2ce9828398</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/core/devices.c?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a&amp;id2=027eb72cbcf81561867a764074964e2ce9828398'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/core/devices.c?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>c8f325a59cfc718d13a50fbc746ed9b415c25e92</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/core/devices.c?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a&amp;id2=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip</div><div class='commit-msg'>Pull EFI fixes from Ingo Molnar:
 "Two EFI boot fixes, one for arm64 and one for x86 systems with certain
  firmware versions"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/fdt: Avoid FDT manipulation after ExitBootServices()
  x86/efi: Always map the first physical page into the EFI pagetables
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a'>Diffstat</a> (limited to 'drivers/usb/core/devices.c')</div><table summary='diffstat' class='diffstat'>