~hc/RK356X_SDK_RELEASE.git

..	..	@@ -1,8 +1,5 @@
	1	+// SPDX-License-Identifier: GPL-2.0-only
1	2	/* Copyright (c) 2017 Facebook
2		- *
3		- * This program is free software; you can redistribute it and/or
4		- * modify it under the terms of version 2 of the GNU General Public
5		- * License as published by the Free Software Foundation.
6	3	*/
7	4	#include <linux/bpf.h>
8	5	#include <linux/slab.h>
..	..	@@ -10,50 +7,121 @@
10	7	#include <linux/etherdevice.h>
11	8	#include <linux/filter.h>
12	9	#include <linux/sched/signal.h>
	10	+#include <net/bpf_sk_storage.h>
	11	+#include <net/sock.h>
	12	+#include <net/tcp.h>
	13	+#include <net/net_namespace.h>
	14	+#include <linux/error-injection.h>
	15	+#include <linux/smp.h>
	16	+#include <linux/sock_diag.h>
13	17
14		-static __always_inline u32 bpf_test_run_one(struct bpf_prog prog, void ctx,
15		- struct bpf_cgroup_storage *storage)
	18	+#define CREATE_TRACE_POINTS
	19	+#include <trace/events/bpf_test_run.h>
	20	+
	21	+struct bpf_test_timer {
	22	+ enum { NO_PREEMPT, NO_MIGRATE } mode;
	23	+ u32 i;
	24	+ u64 time_start, time_spent;
	25	+};
	26	+
	27	+static void bpf_test_timer_enter(struct bpf_test_timer *t)
	28	+ __acquires(rcu)
16	29	{
17		- u32 ret;
18		-
19		- preempt_disable();
20	30	rcu_read_lock();
21		- bpf_cgroup_storage_set(storage);
22		- ret = BPF_PROG_RUN(prog, ctx);
23		- rcu_read_unlock();
24		- preempt_enable();
	31	+ if (t->mode == NO_PREEMPT)
	32	+ preempt_disable();
	33	+ else
	34	+ migrate_disable();
25	35
26		- return ret;
	36	+ t->time_start = ktime_get_ns();
27	37	}
28	38
29		-static u32 bpf_test_run(struct bpf_prog prog, void ctx, u32 repeat, u32 *time)
	39	+static void bpf_test_timer_leave(struct bpf_test_timer *t)
	40	+ __releases(rcu)
30	41	{
31		- struct bpf_cgroup_storage *storage = NULL;
32		- u64 time_start, time_spent = 0;
33		- u32 ret = 0, i;
	42	+ t->time_start = 0;
34	43
35		- storage = bpf_cgroup_storage_alloc(prog);
36		- if (IS_ERR(storage))
37		- return PTR_ERR(storage);
	44	+ if (t->mode == NO_PREEMPT)
	45	+ preempt_enable();
	46	+ else
	47	+ migrate_enable();
	48	+ rcu_read_unlock();
	49	+}
	50	+
	51	+static bool bpf_test_timer_continue(struct bpf_test_timer t, u32 repeat, int err, u32 *duration)
	52	+ __must_hold(rcu)
	53	+{
	54	+ t->i++;
	55	+ if (t->i >= repeat) {
	56	+ /* We're done. */
	57	+ t->time_spent += ktime_get_ns() - t->time_start;
	58	+ do_div(t->time_spent, t->i);
	59	+ *duration = t->time_spent > U32_MAX ? U32_MAX : (u32)t->time_spent;
	60	+ *err = 0;
	61	+ goto reset;
	62	+ }
	63	+
	64	+ if (signal_pending(current)) {
	65	+ /* During iteration: we've been cancelled, abort. */
	66	+ *err = -EINTR;
	67	+ goto reset;
	68	+ }
	69	+
	70	+ if (need_resched()) {
	71	+ /* During iteration: we need to reschedule between runs. */
	72	+ t->time_spent += ktime_get_ns() - t->time_start;
	73	+ bpf_test_timer_leave(t);
	74	+ cond_resched();
	75	+ bpf_test_timer_enter(t);
	76	+ }
	77	+
	78	+ /* Do another round. */
	79	+ return true;
	80	+
	81	+reset:
	82	+ t->i = 0;
	83	+ return false;
	84	+}
	85	+
	86	+static int bpf_test_run(struct bpf_prog prog, void ctx, u32 repeat,
	87	+ u32 retval, u32 time, bool xdp)
	88	+{
	89	+ struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE] = { NULL };
	90	+ struct bpf_test_timer t = { NO_MIGRATE };
	91	+ enum bpf_cgroup_storage_type stype;
	92	+ int ret;
	93	+
	94	+ for_each_cgroup_storage_type(stype) {
	95	+ storage[stype] = bpf_cgroup_storage_alloc(prog, stype);
	96	+ if (IS_ERR(storage[stype])) {
	97	+ storage[stype] = NULL;
	98	+ for_each_cgroup_storage_type(stype)
	99	+ bpf_cgroup_storage_free(storage[stype]);
	100	+ return -ENOMEM;
	101	+ }
	102	+ }
38	103
39	104	if (!repeat)
40	105	repeat = 1;
41		- time_start = ktime_get_ns();
42		- for (i = 0; i < repeat; i++) {
43		- ret = bpf_test_run_one(prog, ctx, storage);
44		- if (need_resched()) {
45		- if (signal_pending(current))
46		- break;
47		- time_spent += ktime_get_ns() - time_start;
48		- cond_resched();
49		- time_start = ktime_get_ns();
50		- }
51		- }
52		- time_spent += ktime_get_ns() - time_start;
53		- do_div(time_spent, repeat);
54		- *time = time_spent > U32_MAX ? U32_MAX : (u32)time_spent;
55	106
56		- bpf_cgroup_storage_free(storage);
	107	+ bpf_test_timer_enter(&t);
	108	+ do {
	109	+ ret = bpf_cgroup_storage_set(storage);
	110	+ if (ret)
	111	+ break;
	112	+
	113	+ if (xdp)
	114	+ *retval = bpf_prog_run_xdp(prog, ctx);
	115	+ else
	116	+ *retval = BPF_PROG_RUN(prog, ctx);
	117	+
	118	+ bpf_cgroup_storage_unset();
	119	+
	120	+ } while (bpf_test_timer_continue(&t, repeat, &ret, time));
	121	+ bpf_test_timer_leave(&t);
	122	+
	123	+ for_each_cgroup_storage_type(stype)
	124	+ bpf_cgroup_storage_free(storage[stype]);
57	125
58	126	return ret;
59	127	}
..	..	@@ -64,8 +132,18 @@
64	132	{
65	133	void __user *data_out = u64_to_user_ptr(kattr->test.data_out);
66	134	int err = -EFAULT;
	135	+ u32 copy_size = size;
67	136
68		- if (data_out && copy_to_user(data_out, data, size))
	137	+ /* Clamp copy if the user has provided a size hint, but copy the full
	138	+ * buffer if not to retain old behaviour.
	139	+ */
	140	+ if (kattr->test.data_size_out &&
	141	+ copy_size > kattr->test.data_size_out) {
	142	+ copy_size = kattr->test.data_size_out;
	143	+ err = -ENOSPC;
	144	+ }
	145	+
	146	+ if (data_out && copy_to_user(data_out, data, copy_size))
69	147	goto out;
70	148	if (copy_to_user(&uattr->test.data_size_out, &size, sizeof(size)))
71	149	goto out;
..	..	@@ -73,53 +151,421 @@
73	151	goto out;
74	152	if (copy_to_user(&uattr->test.duration, &duration, sizeof(duration)))
75	153	goto out;
76		- err = 0;
	154	+ if (err != -ENOSPC)
	155	+ err = 0;
77	156	out:
	157	+ trace_bpf_test_finish(&err);
78	158	return err;
79	159	}
	160	+
	161	+/* Integer types of various sizes and pointer combinations cover variety of
	162	+ * architecture dependent calling conventions. 7+ can be supported in the
	163	+ * future.
	164	+ */
	165	+__diag_push();
	166	+__diag_ignore(GCC, 8, "-Wmissing-prototypes",
	167	+ "Global functions as their definitions will be in vmlinux BTF");
	168	+int noinline bpf_fentry_test1(int a)
	169	+{
	170	+ return a + 1;
	171	+}
	172	+
	173	+int noinline bpf_fentry_test2(int a, u64 b)
	174	+{
	175	+ return a + b;
	176	+}
	177	+
	178	+int noinline bpf_fentry_test3(char a, int b, u64 c)
	179	+{
	180	+ return a + b + c;
	181	+}
	182	+
	183	+int noinline bpf_fentry_test4(void *a, char b, int c, u64 d)
	184	+{
	185	+ return (long)a + b + c + d;
	186	+}
	187	+
	188	+int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e)
	189	+{
	190	+ return a + (long)b + c + d + e;
	191	+}
	192	+
	193	+int noinline bpf_fentry_test6(u64 a, void b, short c, int d, void e, u64 f)
	194	+{
	195	+ return a + (long)b + c + d + (long)e + f;
	196	+}
	197	+
	198	+struct bpf_fentry_test_t {
	199	+ struct bpf_fentry_test_t *a;
	200	+};
	201	+
	202	+int noinline bpf_fentry_test7(struct bpf_fentry_test_t *arg)
	203	+{
	204	+ return (long)arg;
	205	+}
	206	+
	207	+int noinline bpf_fentry_test8(struct bpf_fentry_test_t *arg)
	208	+{
	209	+ return (long)arg->a;
	210	+}
	211	+
	212	+int noinline bpf_modify_return_test(int a, int *b)
	213	+{
	214	+ *b += 1;
	215	+ return a + *b;
	216	+}
	217	+__diag_pop();
	218	+
	219	+ALLOW_ERROR_INJECTION(bpf_modify_return_test, ERRNO);
80	220
81	221	static void bpf_test_init(const union bpf_attr kattr, u32 size,
82	222	u32 headroom, u32 tailroom)
83	223	{
84	224	void __user *data_in = u64_to_user_ptr(kattr->test.data_in);
	225	+ u32 user_size = kattr->test.data_size_in;
85	226	void *data;
86	227
87	228	if (size < ETH_HLEN \|\| size > PAGE_SIZE - headroom - tailroom)
88	229	return ERR_PTR(-EINVAL);
89	230
	231	+ if (user_size > size)
	232	+ return ERR_PTR(-EMSGSIZE);
	233	+
	234	+ size = SKB_DATA_ALIGN(size);
90	235	data = kzalloc(size + headroom + tailroom, GFP_USER);
91	236	if (!data)
92	237	return ERR_PTR(-ENOMEM);
93	238
94		- if (copy_from_user(data + headroom, data_in, size)) {
	239	+ if (copy_from_user(data + headroom, data_in, user_size)) {
95	240	kfree(data);
96	241	return ERR_PTR(-EFAULT);
97	242	}
	243	+
98	244	return data;
99	245	}
	246	+
	247	+int bpf_prog_test_run_tracing(struct bpf_prog *prog,
	248	+ const union bpf_attr *kattr,
	249	+ union bpf_attr __user *uattr)
	250	+{
	251	+ struct bpf_fentry_test_t arg = {};
	252	+ u16 side_effect = 0, ret = 0;
	253	+ int b = 2, err = -EFAULT;
	254	+ u32 retval = 0;
	255	+
	256	+ if (kattr->test.flags \|\| kattr->test.cpu)
	257	+ return -EINVAL;
	258	+
	259	+ switch (prog->expected_attach_type) {
	260	+ case BPF_TRACE_FENTRY:
	261	+ case BPF_TRACE_FEXIT:
	262	+ if (bpf_fentry_test1(1) != 2 \|\|
	263	+ bpf_fentry_test2(2, 3) != 5 \|\|
	264	+ bpf_fentry_test3(4, 5, 6) != 15 \|\|
	265	+ bpf_fentry_test4((void *)7, 8, 9, 10) != 34 \|\|
	266	+ bpf_fentry_test5(11, (void *)12, 13, 14, 15) != 65 \|\|
	267	+ bpf_fentry_test6(16, (void )17, 18, 19, (void )20, 21) != 111 \|\|
	268	+ bpf_fentry_test7((struct bpf_fentry_test_t *)0) != 0 \|\|
	269	+ bpf_fentry_test8(&arg) != 0)
	270	+ goto out;
	271	+ break;
	272	+ case BPF_MODIFY_RETURN:
	273	+ ret = bpf_modify_return_test(1, &b);
	274	+ if (b != 2)
	275	+ side_effect = 1;
	276	+ break;
	277	+ default:
	278	+ goto out;
	279	+ }
	280	+
	281	+ retval = ((u32)side_effect << 16) \| ret;
	282	+ if (copy_to_user(&uattr->test.retval, &retval, sizeof(retval)))
	283	+ goto out;
	284	+
	285	+ err = 0;
	286	+out:
	287	+ trace_bpf_test_finish(&err);
	288	+ return err;
	289	+}
	290	+
	291	+struct bpf_raw_tp_test_run_info {
	292	+ struct bpf_prog *prog;
	293	+ void *ctx;
	294	+ u32 retval;
	295	+};
	296	+
	297	+static void
	298	+__bpf_prog_test_run_raw_tp(void *data)
	299	+{
	300	+ struct bpf_raw_tp_test_run_info *info = data;
	301	+
	302	+ rcu_read_lock();
	303	+ info->retval = BPF_PROG_RUN(info->prog, info->ctx);
	304	+ rcu_read_unlock();
	305	+}
	306	+
	307	+int bpf_prog_test_run_raw_tp(struct bpf_prog *prog,
	308	+ const union bpf_attr *kattr,
	309	+ union bpf_attr __user *uattr)
	310	+{
	311	+ void __user *ctx_in = u64_to_user_ptr(kattr->test.ctx_in);
	312	+ __u32 ctx_size_in = kattr->test.ctx_size_in;
	313	+ struct bpf_raw_tp_test_run_info info;
	314	+ int cpu = kattr->test.cpu, err = 0;
	315	+ int current_cpu;
	316	+
	317	+ /* doesn't support data_in/out, ctx_out, duration, or repeat */
	318	+ if (kattr->test.data_in \|\| kattr->test.data_out \|\|
	319	+ kattr->test.ctx_out \|\| kattr->test.duration \|\|
	320	+ kattr->test.repeat)
	321	+ return -EINVAL;
	322	+
	323	+ if (ctx_size_in < prog->aux->max_ctx_offset \|\|
	324	+ ctx_size_in > MAX_BPF_FUNC_ARGS * sizeof(u64))
	325	+ return -EINVAL;
	326	+
	327	+ if ((kattr->test.flags & BPF_F_TEST_RUN_ON_CPU) == 0 && cpu != 0)
	328	+ return -EINVAL;
	329	+
	330	+ if (ctx_size_in) {
	331	+ info.ctx = kzalloc(ctx_size_in, GFP_USER);
	332	+ if (!info.ctx)
	333	+ return -ENOMEM;
	334	+ if (copy_from_user(info.ctx, ctx_in, ctx_size_in)) {
	335	+ err = -EFAULT;
	336	+ goto out;
	337	+ }
	338	+ } else {
	339	+ info.ctx = NULL;
	340	+ }
	341	+
	342	+ info.prog = prog;
	343	+
	344	+ current_cpu = get_cpu();
	345	+ if ((kattr->test.flags & BPF_F_TEST_RUN_ON_CPU) == 0 \|\|
	346	+ cpu == current_cpu) {
	347	+ __bpf_prog_test_run_raw_tp(&info);
	348	+ } else if (cpu >= nr_cpu_ids \|\| !cpu_online(cpu)) {
	349	+ /* smp_call_function_single() also checks cpu_online()
	350	+ * after csd_lock(). However, since cpu is from user
	351	+ * space, let's do an extra quick check to filter out
	352	+ * invalid value before smp_call_function_single().
	353	+ */
	354	+ err = -ENXIO;
	355	+ } else {
	356	+ err = smp_call_function_single(cpu, __bpf_prog_test_run_raw_tp,
	357	+ &info, 1);
	358	+ }
	359	+ put_cpu();
	360	+
	361	+ if (!err &&
	362	+ copy_to_user(&uattr->test.retval, &info.retval, sizeof(u32)))
	363	+ err = -EFAULT;
	364	+
	365	+out:
	366	+ kfree(info.ctx);
	367	+ return err;
	368	+}
	369	+
	370	+static void bpf_ctx_init(const union bpf_attr kattr, u32 max_size)
	371	+{
	372	+ void __user *data_in = u64_to_user_ptr(kattr->test.ctx_in);
	373	+ void __user *data_out = u64_to_user_ptr(kattr->test.ctx_out);
	374	+ u32 size = kattr->test.ctx_size_in;
	375	+ void *data;
	376	+ int err;
	377	+
	378	+ if (!data_in && !data_out)
	379	+ return NULL;
	380	+
	381	+ data = kzalloc(max_size, GFP_USER);
	382	+ if (!data)
	383	+ return ERR_PTR(-ENOMEM);
	384	+
	385	+ if (data_in) {
	386	+ err = bpf_check_uarg_tail_zero(data_in, max_size, size);
	387	+ if (err) {
	388	+ kfree(data);
	389	+ return ERR_PTR(err);
	390	+ }
	391	+
	392	+ size = min_t(u32, max_size, size);
	393	+ if (copy_from_user(data, data_in, size)) {
	394	+ kfree(data);
	395	+ return ERR_PTR(-EFAULT);
	396	+ }
	397	+ }
	398	+ return data;
	399	+}
	400	+
	401	+static int bpf_ctx_finish(const union bpf_attr *kattr,
	402	+ union bpf_attr __user uattr, const void data,
	403	+ u32 size)
	404	+{
	405	+ void __user *data_out = u64_to_user_ptr(kattr->test.ctx_out);
	406	+ int err = -EFAULT;
	407	+ u32 copy_size = size;
	408	+
	409	+ if (!data \|\| !data_out)
	410	+ return 0;
	411	+
	412	+ if (copy_size > kattr->test.ctx_size_out) {
	413	+ copy_size = kattr->test.ctx_size_out;
	414	+ err = -ENOSPC;
	415	+ }
	416	+
	417	+ if (copy_to_user(data_out, data, copy_size))
	418	+ goto out;
	419	+ if (copy_to_user(&uattr->test.ctx_size_out, &size, sizeof(size)))
	420	+ goto out;
	421	+ if (err != -ENOSPC)
	422	+ err = 0;
	423	+out:
	424	+ return err;
	425	+}
	426	+
	427	+/**
	428	+ * range_is_zero - test whether buffer is initialized
	429	+ * @buf: buffer to check
	430	+ * @from: check from this position
	431	+ * @to: check up until (excluding) this position
	432	+ *
	433	+ * This function returns true if the there is a non-zero byte
	434	+ * in the buf in the range [from,to).
	435	+ */
	436	+static inline bool range_is_zero(void *buf, size_t from, size_t to)
	437	+{
	438	+ return !memchr_inv((u8 *)buf + from, 0, to - from);
	439	+}
	440	+
	441	+static int convert___skb_to_skb(struct sk_buff skb, struct __sk_buff __skb)
	442	+{
	443	+ struct qdisc_skb_cb cb = (struct qdisc_skb_cb )skb->cb;
	444	+
	445	+ if (!__skb)
	446	+ return 0;
	447	+
	448	+ /* make sure the fields we don't use are zeroed */
	449	+ if (!range_is_zero(__skb, 0, offsetof(struct __sk_buff, mark)))
	450	+ return -EINVAL;
	451	+
	452	+ /* mark is allowed */
	453	+
	454	+ if (!range_is_zero(__skb, offsetofend(struct __sk_buff, mark),
	455	+ offsetof(struct __sk_buff, priority)))
	456	+ return -EINVAL;
	457	+
	458	+ /* priority is allowed */
	459	+
	460	+ if (!range_is_zero(__skb, offsetofend(struct __sk_buff, priority),
	461	+ offsetof(struct __sk_buff, ifindex)))
	462	+ return -EINVAL;
	463	+
	464	+ /* ifindex is allowed */
	465	+
	466	+ if (!range_is_zero(__skb, offsetofend(struct __sk_buff, ifindex),
	467	+ offsetof(struct __sk_buff, cb)))
	468	+ return -EINVAL;
	469	+
	470	+ /* cb is allowed */
	471	+
	472	+ if (!range_is_zero(__skb, offsetofend(struct __sk_buff, cb),
	473	+ offsetof(struct __sk_buff, tstamp)))
	474	+ return -EINVAL;
	475	+
	476	+ /* tstamp is allowed */
	477	+ /* wire_len is allowed */
	478	+ /* gso_segs is allowed */
	479	+
	480	+ if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_segs),
	481	+ offsetof(struct __sk_buff, gso_size)))
	482	+ return -EINVAL;
	483	+
	484	+ /* gso_size is allowed */
	485	+
	486	+ if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_size),
	487	+ sizeof(struct __sk_buff)))
	488	+ return -EINVAL;
	489	+
	490	+ skb->mark = __skb->mark;
	491	+ skb->priority = __skb->priority;
	492	+ skb->tstamp = __skb->tstamp;
	493	+ memcpy(&cb->data, __skb->cb, QDISC_CB_PRIV_LEN);
	494	+
	495	+ if (__skb->wire_len == 0) {
	496	+ cb->pkt_len = skb->len;
	497	+ } else {
	498	+ if (__skb->wire_len < skb->len \|\|
	499	+ __skb->wire_len > GSO_MAX_SIZE)
	500	+ return -EINVAL;
	501	+ cb->pkt_len = __skb->wire_len;
	502	+ }
	503	+
	504	+ if (__skb->gso_segs > GSO_MAX_SEGS)
	505	+ return -EINVAL;
	506	+ skb_shinfo(skb)->gso_segs = __skb->gso_segs;
	507	+ skb_shinfo(skb)->gso_size = __skb->gso_size;
	508	+
	509	+ return 0;
	510	+}
	511	+
	512	+static void convert_skb_to___skb(struct sk_buff skb, struct __sk_buff __skb)
	513	+{
	514	+ struct qdisc_skb_cb cb = (struct qdisc_skb_cb )skb->cb;
	515	+
	516	+ if (!__skb)
	517	+ return;
	518	+
	519	+ __skb->mark = skb->mark;
	520	+ __skb->priority = skb->priority;
	521	+ __skb->ifindex = skb->dev->ifindex;
	522	+ __skb->tstamp = skb->tstamp;
	523	+ memcpy(__skb->cb, &cb->data, QDISC_CB_PRIV_LEN);
	524	+ __skb->wire_len = cb->pkt_len;
	525	+ __skb->gso_segs = skb_shinfo(skb)->gso_segs;
	526	+}
	527	+
	528	+static struct proto bpf_dummy_proto = {
	529	+ .name = "bpf_dummy",
	530	+ .owner = THIS_MODULE,
	531	+ .obj_size = sizeof(struct sock),
	532	+};
100	533
101	534	int bpf_prog_test_run_skb(struct bpf_prog prog, const union bpf_attr kattr,
102	535	union bpf_attr __user *uattr)
103	536	{
104	537	bool is_l2 = false, is_direct_pkt_access = false;
	538	+ struct net *net = current->nsproxy->net_ns;
	539	+ struct net_device *dev = net->loopback_dev;
105	540	u32 size = kattr->test.data_size_in;
106	541	u32 repeat = kattr->test.repeat;
	542	+ struct __sk_buff *ctx = NULL;
107	543	u32 retval, duration;
108	544	int hh_len = ETH_HLEN;
109	545	struct sk_buff *skb;
	546	+ struct sock *sk;
110	547	void *data;
111	548	int ret;
	549	+
	550	+ if (kattr->test.flags \|\| kattr->test.cpu)
	551	+ return -EINVAL;
112	552
113	553	data = bpf_test_init(kattr, size, NET_SKB_PAD + NET_IP_ALIGN,
114	554	SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
115	555	if (IS_ERR(data))
116	556	return PTR_ERR(data);
117	557
	558	+ ctx = bpf_ctx_init(kattr, sizeof(struct __sk_buff));
	559	+ if (IS_ERR(ctx)) {
	560	+ kfree(data);
	561	+ return PTR_ERR(ctx);
	562	+ }
	563	+
118	564	switch (prog->type) {
119	565	case BPF_PROG_TYPE_SCHED_CLS:
120	566	case BPF_PROG_TYPE_SCHED_ACT:
121	567	is_l2 = true;
122		- /* fall through */
	568	+ fallthrough;
123	569	case BPF_PROG_TYPE_LWT_IN:
124	570	case BPF_PROG_TYPE_LWT_OUT:
125	571	case BPF_PROG_TYPE_LWT_XMIT:
..	..	@@ -129,71 +575,330 @@
129	575	break;
130	576	}
131	577
	578	+ sk = sk_alloc(net, AF_UNSPEC, GFP_USER, &bpf_dummy_proto, 1);
	579	+ if (!sk) {
	580	+ kfree(data);
	581	+ kfree(ctx);
	582	+ return -ENOMEM;
	583	+ }
	584	+ sock_init_data(NULL, sk);
	585	+
132	586	skb = build_skb(data, 0);
133	587	if (!skb) {
134	588	kfree(data);
	589	+ kfree(ctx);
	590	+ sk_free(sk);
135	591	return -ENOMEM;
136	592	}
	593	+ skb->sk = sk;
137	594
138	595	skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
139	596	__skb_put(skb, size);
140		- skb->protocol = eth_type_trans(skb, current->nsproxy->net_ns->loopback_dev);
	597	+ if (ctx && ctx->ifindex > 1) {
	598	+ dev = dev_get_by_index(net, ctx->ifindex);
	599	+ if (!dev) {
	600	+ ret = -ENODEV;
	601	+ goto out;
	602	+ }
	603	+ }
	604	+ skb->protocol = eth_type_trans(skb, dev);
141	605	skb_reset_network_header(skb);
	606	+
	607	+ switch (skb->protocol) {
	608	+ case htons(ETH_P_IP):
	609	+ sk->sk_family = AF_INET;
	610	+ if (sizeof(struct iphdr) <= skb_headlen(skb)) {
	611	+ sk->sk_rcv_saddr = ip_hdr(skb)->saddr;
	612	+ sk->sk_daddr = ip_hdr(skb)->daddr;
	613	+ }
	614	+ break;
	615	+#if IS_ENABLED(CONFIG_IPV6)
	616	+ case htons(ETH_P_IPV6):
	617	+ sk->sk_family = AF_INET6;
	618	+ if (sizeof(struct ipv6hdr) <= skb_headlen(skb)) {
	619	+ sk->sk_v6_rcv_saddr = ipv6_hdr(skb)->saddr;
	620	+ sk->sk_v6_daddr = ipv6_hdr(skb)->daddr;
	621	+ }
	622	+ break;
	623	+#endif
	624	+ default:
	625	+ break;
	626	+ }
142	627
143	628	if (is_l2)
144	629	__skb_push(skb, hh_len);
145	630	if (is_direct_pkt_access)
146	631	bpf_compute_data_pointers(skb);
147		- retval = bpf_test_run(prog, skb, repeat, &duration);
	632	+ ret = convert___skb_to_skb(skb, ctx);
	633	+ if (ret)
	634	+ goto out;
	635	+ ret = bpf_test_run(prog, skb, repeat, &retval, &duration, false);
	636	+ if (ret)
	637	+ goto out;
148	638	if (!is_l2) {
149	639	if (skb_headroom(skb) < hh_len) {
150	640	int nhead = HH_DATA_ALIGN(hh_len - skb_headroom(skb));
151	641
152	642	if (pskb_expand_head(skb, nhead, 0, GFP_USER)) {
153		- kfree_skb(skb);
154		- return -ENOMEM;
	643	+ ret = -ENOMEM;
	644	+ goto out;
155	645	}
156	646	}
157	647	memset(__skb_push(skb, hh_len), 0, hh_len);
158	648	}
	649	+ convert_skb_to___skb(skb, ctx);
159	650
160	651	size = skb->len;
161	652	/* bpf program can never convert linear skb to non-linear */
162	653	if (WARN_ON_ONCE(skb_is_nonlinear(skb)))
163	654	size = skb_headlen(skb);
164	655	ret = bpf_test_finish(kattr, uattr, skb->data, size, retval, duration);
	656	+ if (!ret)
	657	+ ret = bpf_ctx_finish(kattr, uattr, ctx,
	658	+ sizeof(struct __sk_buff));
	659	+out:
	660	+ if (dev && dev != net->loopback_dev)
	661	+ dev_put(dev);
165	662	kfree_skb(skb);
	663	+ sk_free(sk);
	664	+ kfree(ctx);
166	665	return ret;
167	666	}
168	667
169	668	int bpf_prog_test_run_xdp(struct bpf_prog prog, const union bpf_attr kattr,
170	669	union bpf_attr __user *uattr)
171	670	{
	671	+ u32 tailroom = SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
	672	+ u32 headroom = XDP_PACKET_HEADROOM;
172	673	u32 size = kattr->test.data_size_in;
173	674	u32 repeat = kattr->test.repeat;
174	675	struct netdev_rx_queue *rxqueue;
175	676	struct xdp_buff xdp = {};
176	677	u32 retval, duration;
	678	+ u32 max_data_sz;
177	679	void *data;
178	680	int ret;
179	681
180		- data = bpf_test_init(kattr, size, XDP_PACKET_HEADROOM + NET_IP_ALIGN, 0);
	682	+ if (prog->expected_attach_type == BPF_XDP_DEVMAP \|\|
	683	+ prog->expected_attach_type == BPF_XDP_CPUMAP)
	684	+ return -EINVAL;
	685	+ if (kattr->test.ctx_in \|\| kattr->test.ctx_out)
	686	+ return -EINVAL;
	687	+
	688	+ /* XDP have extra tailroom as (most) drivers use full page */
	689	+ max_data_sz = 4096 - headroom - tailroom;
	690	+
	691	+ data = bpf_test_init(kattr, max_data_sz, headroom, tailroom);
181	692	if (IS_ERR(data))
182	693	return PTR_ERR(data);
183	694
184	695	xdp.data_hard_start = data;
185		- xdp.data = data + XDP_PACKET_HEADROOM + NET_IP_ALIGN;
	696	+ xdp.data = data + headroom;
186	697	xdp.data_meta = xdp.data;
187	698	xdp.data_end = xdp.data + size;
	699	+ xdp.frame_sz = headroom + max_data_sz + tailroom;
188	700
189	701	rxqueue = __netif_get_rx_queue(current->nsproxy->net_ns->loopback_dev, 0);
190	702	xdp.rxq = &rxqueue->xdp_rxq;
191		-
192		- retval = bpf_test_run(prog, &xdp, repeat, &duration);
193		- if (xdp.data != data + XDP_PACKET_HEADROOM + NET_IP_ALIGN \|\|
194		- xdp.data_end != xdp.data + size)
	703	+ bpf_prog_change_xdp(NULL, prog);
	704	+ ret = bpf_test_run(prog, &xdp, repeat, &retval, &duration, true);
	705	+ if (ret)
	706	+ goto out;
	707	+ if (xdp.data != data + headroom \|\| xdp.data_end != xdp.data + size)
195	708	size = xdp.data_end - xdp.data;
196	709	ret = bpf_test_finish(kattr, uattr, xdp.data, size, retval, duration);
	710	+out:
	711	+ bpf_prog_change_xdp(prog, NULL);
197	712	kfree(data);
198	713	return ret;
199	714	}
	715	+
	716	+static int verify_user_bpf_flow_keys(struct bpf_flow_keys *ctx)
	717	+{
	718	+ /* make sure the fields we don't use are zeroed */
	719	+ if (!range_is_zero(ctx, 0, offsetof(struct bpf_flow_keys, flags)))
	720	+ return -EINVAL;
	721	+
	722	+ /* flags is allowed */
	723	+
	724	+ if (!range_is_zero(ctx, offsetofend(struct bpf_flow_keys, flags),
	725	+ sizeof(struct bpf_flow_keys)))
	726	+ return -EINVAL;
	727	+
	728	+ return 0;
	729	+}
	730	+
	731	+int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
	732	+ const union bpf_attr *kattr,
	733	+ union bpf_attr __user *uattr)
	734	+{
	735	+ struct bpf_test_timer t = { NO_PREEMPT };
	736	+ u32 size = kattr->test.data_size_in;
	737	+ struct bpf_flow_dissector ctx = {};
	738	+ u32 repeat = kattr->test.repeat;
	739	+ struct bpf_flow_keys *user_ctx;
	740	+ struct bpf_flow_keys flow_keys;
	741	+ const struct ethhdr *eth;
	742	+ unsigned int flags = 0;
	743	+ u32 retval, duration;
	744	+ void *data;
	745	+ int ret;
	746	+
	747	+ if (prog->type != BPF_PROG_TYPE_FLOW_DISSECTOR)
	748	+ return -EINVAL;
	749	+
	750	+ if (kattr->test.flags \|\| kattr->test.cpu)
	751	+ return -EINVAL;
	752	+
	753	+ if (size < ETH_HLEN)
	754	+ return -EINVAL;
	755	+
	756	+ data = bpf_test_init(kattr, size, 0, 0);
	757	+ if (IS_ERR(data))
	758	+ return PTR_ERR(data);
	759	+
	760	+ eth = (struct ethhdr *)data;
	761	+
	762	+ if (!repeat)
	763	+ repeat = 1;
	764	+
	765	+ user_ctx = bpf_ctx_init(kattr, sizeof(struct bpf_flow_keys));
	766	+ if (IS_ERR(user_ctx)) {
	767	+ kfree(data);
	768	+ return PTR_ERR(user_ctx);
	769	+ }
	770	+ if (user_ctx) {
	771	+ ret = verify_user_bpf_flow_keys(user_ctx);
	772	+ if (ret)
	773	+ goto out;
	774	+ flags = user_ctx->flags;
	775	+ }
	776	+
	777	+ ctx.flow_keys = &flow_keys;
	778	+ ctx.data = data;
	779	+ ctx.data_end = (__u8 *)data + size;
	780	+
	781	+ bpf_test_timer_enter(&t);
	782	+ do {
	783	+ retval = bpf_flow_dissect(prog, &ctx, eth->h_proto, ETH_HLEN,
	784	+ size, flags);
	785	+ } while (bpf_test_timer_continue(&t, repeat, &ret, &duration));
	786	+ bpf_test_timer_leave(&t);
	787	+
	788	+ if (ret < 0)
	789	+ goto out;
	790	+
	791	+ ret = bpf_test_finish(kattr, uattr, &flow_keys, sizeof(flow_keys),
	792	+ retval, duration);
	793	+ if (!ret)
	794	+ ret = bpf_ctx_finish(kattr, uattr, user_ctx,
	795	+ sizeof(struct bpf_flow_keys));
	796	+
	797	+out:
	798	+ kfree(user_ctx);
	799	+ kfree(data);
	800	+ return ret;
	801	+}
	802	+
	803	+int bpf_prog_test_run_sk_lookup(struct bpf_prog prog, const union bpf_attr kattr,
	804	+ union bpf_attr __user *uattr)
	805	+{
	806	+ struct bpf_test_timer t = { NO_PREEMPT };
	807	+ struct bpf_prog_array *progs = NULL;
	808	+ struct bpf_sk_lookup_kern ctx = {};
	809	+ u32 repeat = kattr->test.repeat;
	810	+ struct bpf_sk_lookup *user_ctx;
	811	+ u32 retval, duration;
	812	+ int ret = -EINVAL;
	813	+
	814	+ if (prog->type != BPF_PROG_TYPE_SK_LOOKUP)
	815	+ return -EINVAL;
	816	+
	817	+ if (kattr->test.flags \|\| kattr->test.cpu)
	818	+ return -EINVAL;
	819	+
	820	+ if (kattr->test.data_in \|\| kattr->test.data_size_in \|\| kattr->test.data_out \|\|
	821	+ kattr->test.data_size_out)
	822	+ return -EINVAL;
	823	+
	824	+ if (!repeat)
	825	+ repeat = 1;
	826	+
	827	+ user_ctx = bpf_ctx_init(kattr, sizeof(*user_ctx));
	828	+ if (IS_ERR(user_ctx))
	829	+ return PTR_ERR(user_ctx);
	830	+
	831	+ if (!user_ctx)
	832	+ return -EINVAL;
	833	+
	834	+ if (user_ctx->sk)
	835	+ goto out;
	836	+
	837	+ if (!range_is_zero(user_ctx, offsetofend(typeof(user_ctx), local_port), sizeof(user_ctx)))
	838	+ goto out;
	839	+
	840	+ if (user_ctx->local_port > U16_MAX \|\| user_ctx->remote_port > U16_MAX) {
	841	+ ret = -ERANGE;
	842	+ goto out;
	843	+ }
	844	+
	845	+ ctx.family = (u16)user_ctx->family;
	846	+ ctx.protocol = (u16)user_ctx->protocol;
	847	+ ctx.dport = (u16)user_ctx->local_port;
	848	+ ctx.sport = (__force __be16)user_ctx->remote_port;
	849	+
	850	+ switch (ctx.family) {
	851	+ case AF_INET:
	852	+ ctx.v4.daddr = (__force __be32)user_ctx->local_ip4;
	853	+ ctx.v4.saddr = (__force __be32)user_ctx->remote_ip4;
	854	+ break;
	855	+
	856	+#if IS_ENABLED(CONFIG_IPV6)
	857	+ case AF_INET6:
	858	+ ctx.v6.daddr = (struct in6_addr *)user_ctx->local_ip6;
	859	+ ctx.v6.saddr = (struct in6_addr *)user_ctx->remote_ip6;
	860	+ break;
	861	+#endif
	862	+
	863	+ default:
	864	+ ret = -EAFNOSUPPORT;
	865	+ goto out;
	866	+ }
	867	+
	868	+ progs = bpf_prog_array_alloc(1, GFP_KERNEL);
	869	+ if (!progs) {
	870	+ ret = -ENOMEM;
	871	+ goto out;
	872	+ }
	873	+
	874	+ progs->items[0].prog = prog;
	875	+
	876	+ bpf_test_timer_enter(&t);
	877	+ do {
	878	+ ctx.selected_sk = NULL;
	879	+ retval = BPF_PROG_SK_LOOKUP_RUN_ARRAY(progs, ctx, BPF_PROG_RUN);
	880	+ } while (bpf_test_timer_continue(&t, repeat, &ret, &duration));
	881	+ bpf_test_timer_leave(&t);
	882	+
	883	+ if (ret < 0)
	884	+ goto out;
	885	+
	886	+ user_ctx->cookie = 0;
	887	+ if (ctx.selected_sk) {
	888	+ if (ctx.selected_sk->sk_reuseport && !ctx.no_reuseport) {
	889	+ ret = -EOPNOTSUPP;
	890	+ goto out;
	891	+ }
	892	+
	893	+ user_ctx->cookie = sock_gen_cookie(ctx.selected_sk);
	894	+ }
	895	+
	896	+ ret = bpf_test_finish(kattr, uattr, NULL, 0, retval, duration);
	897	+ if (!ret)
	898	+ ret = bpf_ctx_finish(kattr, uattr, user_ctx, sizeof(*user_ctx));
	899	+
	900	+out:
	901	+ bpf_prog_array_free(progs);
	902	+ kfree(user_ctx);
	903	+ return ret;
	904	+}