Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 906 insertions, 0 deletions

diff --git a/net/bpf/Makefile b/net/bpf/Makefile
new file mode 100644
index 000000000..1c0a98d8c
--- /dev/null
+++ b/net/bpf/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_BPF_SYSCALL)	:= test_run.o
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
new file mode 100644
index 000000000..7df14a0e3
--- /dev/null
+++ b/net/bpf/test_run.c
@@ -0,0 +1,904 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2017 Facebook
+ */
+#include <linux/bpf.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/etherdevice.h>
+#include <linux/filter.h>
+#include <linux/sched/signal.h>
+#include <net/bpf_sk_storage.h>
+#include <net/sock.h>
+#include <net/tcp.h>
+#include <net/net_namespace.h>
+#include <linux/error-injection.h>
+#include <linux/smp.h>
+#include <linux/sock_diag.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/bpf_test_run.h>
+
+struct bpf_test_timer {
+	enum { NO_PREEMPT, NO_MIGRATE } mode;
+	u32 i;
+	u64 time_start, time_spent;
+};
+
+static void bpf_test_timer_enter(struct bpf_test_timer *t)
+	__acquires(rcu)
+{
+	rcu_read_lock();
+	if (t->mode == NO_PREEMPT)
+		preempt_disable();
+	else
+		migrate_disable();
+
+	t->time_start = ktime_get_ns();
+}
+
+static void bpf_test_timer_leave(struct bpf_test_timer *t)
+	__releases(rcu)
+{
+	t->time_start = 0;
+
+	if (t->mode == NO_PREEMPT)
+		preempt_enable();
+	else
+		migrate_enable();
+	rcu_read_unlock();
+}
+
+static bool bpf_test_timer_continue(struct bpf_test_timer *t, u32 repeat, int *err, u32 *duration)
+	__must_hold(rcu)
+{
+	t->i++;
+	if (t->i >= repeat) {
+		/* We're done. */
+		t->time_spent += ktime_get_ns() - t->time_start;
+		do_div(t->time_spent, t->i);
+		*duration = t->time_spent > U32_MAX ? U32_MAX : (u32)t->time_spent;
+		*err = 0;
+		goto reset;
+	}
+
+	if (signal_pending(current)) {
+		/* During iteration: we've been cancelled, abort. */
+		*err = -EINTR;
+		goto reset;
+	}
+
+	if (need_resched()) {
+		/* During iteration: we need to reschedule between runs. */
+		t->time_spent += ktime_get_ns() - t->time_start;
+		bpf_test_timer_leave(t);
+		cond_resched();
+		bpf_test_timer_enter(t);
+	}
+
+	/* Do another round. */
+	return true;
+
+reset:
+	t->i = 0;
+	return false;
+}
+
+static int bpf_test_run(struct bpf_prog *prog, void *ctx, u32 repeat,
+			u32 *retval, u32 *time, bool xdp)
+{
+	struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE] = { NULL };
+	struct bpf_test_timer t = { NO_MIGRATE };
+	enum bpf_cgroup_storage_type stype;
+	int ret;
+
+	for_each_cgroup_storage_type(stype) {
+		storage[stype] = bpf_cgroup_storage_alloc(prog, stype);
+		if (IS_ERR(storage[stype])) {
+			storage[stype] = NULL;
+			for_each_cgroup_storage_type(stype)
+				bpf_cgroup_storage_free(storage[stype]);
+			return -ENOMEM;
+		}
+	}
+
+	if (!repeat)
+		repeat = 1;
+
+	bpf_test_timer_enter(&t);
+	do {
+		ret = bpf_cgroup_storage_set(storage);
+		if (ret)
+			break;
+
+		if (xdp)
+			*retval = bpf_prog_run_xdp(prog, ctx);
+		else
+			*retval = BPF_PROG_RUN(prog, ctx);
+
+		bpf_cgroup_storage_unset();
+
+	} while (bpf_test_timer_continue(&t, repeat, &ret, time));
+	bpf_test_timer_leave(&t);
+
+	for_each_cgroup_storage_type(stype)
+		bpf_cgroup_storage_free(storage[stype]);
+
+	return ret;
+}
+
+static int bpf_test_finish(const union bpf_attr *kattr,
+			   union bpf_attr __user *uattr, const void *data,
+			   u32 size, u32 retval, u32 duration)
+{
+	void __user *data_out = u64_to_user_ptr(kattr->test.data_out);
+	int err = -EFAULT;
+	u32 copy_size = size;
+
+	/* Clamp copy if the user has provided a size hint, but copy the full
+	 * buffer if not to retain old behaviour.
+	 */
+	if (kattr->test.data_size_out &&
+	    copy_size > kattr->test.data_size_out) {
+		copy_size = kattr->test.data_size_out;
+		err = -ENOSPC;
+	}
+
+	if (data_out && copy_to_user(data_out, data, copy_size))
+		goto out;
+	if (copy_to_user(&uattr->test.data_size_out, &size, sizeof(size)))
+		goto out;
+	if (copy_to_user(&uattr->test.retval, &retval, sizeof(retval)))
+		goto out;
+	if (copy_to_user(&uattr->test.duration, &duration, sizeof(duration)))
+		goto out;
+	if (err != -ENOSPC)
+		err = 0;
+out:
+	trace_bpf_test_finish(&err);
+	return err;
+}
+
+/* Integer types of various sizes and pointer combinations cover variety of
+ * architecture dependent calling conventions. 7+ can be supported in the
+ * future.
+ */
+__diag_push();
+__diag_ignore(GCC, 8, "-Wmissing-prototypes",
+	      "Global functions as their definitions will be in vmlinux BTF");
+int noinline bpf_fentry_test1(int a)
+{
+	return a + 1;
+}
+
+int noinline bpf_fentry_test2(int a, u64 b)
+{
+	return a + b;
+}
+
+int noinline bpf_fentry_test3(char a, int b, u64 c)
+{
+	return a + b + c;
+}
+
+int noinline bpf_fentry_test4(void *a, char b, int c, u64 d)
+{
+	return (long)a + b + c + d;
+}
+
+int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e)
+{
+	return a + (long)b + c + d + e;
+}
+
+int noinline bpf_fentry_test6(u64 a, void *b, short c, int d, void *e, u64 f)
+{
+	return a + (long)b + c + d + (long)e + f;
+}
+
+struct bpf_fentry_test_t {
+	struct bpf_fentry_test_t *a;
+};
+
+int noinline bpf_fentry_test7(struct bpf_fentry_test_t *arg)
+{
+	return (long)arg;
+}
+
+int noinline bpf_fentry_test8(struct bpf_fentry_test_t *arg)
+{
+	return (long)arg->a;
+}
+
+int noinline bpf_modify_return_test(int a, int *b)
+{
+	*b += 1;
+	return a + *b;
+}
+__diag_pop();
+
+ALLOW_ERROR_INJECTION(bpf_modify_return_test, ERRNO);
+
+static void *bpf_test_init(const union bpf_attr *kattr, u32 size,
+			   u32 headroom, u32 tailroom)
+{
+	void __user *data_in = u64_to_user_ptr(kattr->test.data_in);
+	u32 user_size = kattr->test.data_size_in;
+	void *data;
+
+	if (size < ETH_HLEN || size > PAGE_SIZE - headroom - tailroom)
+		return ERR_PTR(-EINVAL);
+
+	if (user_size > size)
+		return ERR_PTR(-EMSGSIZE);
+
+	size = SKB_DATA_ALIGN(size);
+	data = kzalloc(size + headroom + tailroom, GFP_USER);
+	if (!data)
+		return ERR_PTR(-ENOMEM);
+
+	if (copy_from_user(data + headroom, data_in, user_size)) {
+		kfree(data);
+		return ERR_PTR(-EFAULT);
+	}
+
+	return data;
+}
+
+int bpf_prog_test_run_tracing(struct bpf_prog *prog,
+			      const union bpf_attr *kattr,
+			      union bpf_attr __user *uattr)
+{
+	struct bpf_fentry_test_t arg = {};
+	u16 side_effect = 0, ret = 0;
+	int b = 2, err = -EFAULT;
+	u32 retval = 0;
+
+	if (kattr->test.flags || kattr->test.cpu)
+		return -EINVAL;
+
+	switch (prog->expected_attach_type) {
+	case BPF_TRACE_FENTRY:
+	case BPF_TRACE_FEXIT:
+		if (bpf_fentry_test1(1) != 2 ||
+		    bpf_fentry_test2(2, 3) != 5 ||
+		    bpf_fentry_test3(4, 5, 6) != 15 ||
+		    bpf_fentry_test4((void *)7, 8, 9, 10) != 34 ||
+		    bpf_fentry_test5(11, (void *)12, 13, 14, 15) != 65 ||
+		    bpf_fentry_test6(16, (void *)17, 18, 19, (void *)20, 21) != 111 ||
+		    bpf_fentry_test7((struct bpf_fentry_test_t *)0) != 0 ||
+		    bpf_fentry_test8(&arg) != 0)
+			goto out;
+		break;
+	case BPF_MODIFY_RETURN:
+		ret = bpf_modify_return_test(1, &b);
+		if (b != 2)
+			side_effect = 1;
+		break;
+	default:
+		goto out;
+	}
+
+	retval = ((u32)side_effect << 16) | ret;
+	if (copy_to_user(&uattr->test.retval, &retval, sizeof(retval)))
+		goto out;
+
+	err = 0;
+out:
+	trace_bpf_test_finish(&err);
+	return err;
+}
+
+struct bpf_raw_tp_test_run_info {
+	struct bpf_prog *prog;
+	void *ctx;
+	u32 retval;
+};
+
+static void
+__bpf_prog_test_run_raw_tp(void *data)
+{
+	struct bpf_raw_tp_test_run_info *info = data;
+
+	rcu_read_lock();
+	info->retval = BPF_PROG_RUN(info->prog, info->ctx);
+	rcu_read_unlock();
+}
+
+int bpf_prog_test_run_raw_tp(struct bpf_prog *prog,
+			     const union bpf_attr *kattr,
+			     union bpf_attr __user *uattr)
+{
+	void __user *ctx_in = u64_to_user_ptr(kattr->test.ctx_in);
+	__u32 ctx_size_in = kattr->test.ctx_size_in;
+	struct bpf_raw_tp_test_run_info info;
+	int cpu = kattr->test.cpu, err = 0;
+	int current_cpu;
+
+	/* doesn't support data_in/out, ctx_out, duration, or repeat */
+	if (kattr->test.data_in || kattr->test.data_out ||
+	    kattr->test.ctx_out || kattr->test.duration ||
+	    kattr->test.repeat)
+		return -EINVAL;
+
+	if (ctx_size_in < prog->aux->max_ctx_offset ||
+	    ctx_size_in > MAX_BPF_FUNC_ARGS * sizeof(u64))
+		return -EINVAL;
+
+	if ((kattr->test.flags & BPF_F_TEST_RUN_ON_CPU) == 0 && cpu != 0)
+		return -EINVAL;
+
+	if (ctx_size_in) {
+		info.ctx = kzalloc(ctx_size_in, GFP_USER);
+		if (!info.ctx)
+			return -ENOMEM;
+		if (copy_from_user(info.ctx, ctx_in, ctx_size_in)) {
+			err = -EFAULT;
+			goto out;
+		}
+	} else {
+		info.ctx = NULL;
+	}
+
+	info.prog = prog;
+
+	current_cpu = get_cpu();
+	if ((kattr->test.flags & BPF_F_TEST_RUN_ON_CPU) == 0 ||
+	    cpu == current_cpu) {
+		__bpf_prog_test_run_raw_tp(&info);
+	} else if (cpu >= nr_cpu_ids || !cpu_online(cpu)) {
+		/* smp_call_function_single() also checks cpu_online()
+		 * after csd_lock(). However, since cpu is from user
+		 * space, let's do an extra quick check to filter out
+		 * invalid value before smp_call_function_single().
+		 */
+		err = -ENXIO;
+	} else {
+		err = smp_call_function_single(cpu, __bpf_prog_test_run_raw_tp,
+					       &info, 1);
+	}
+	put_cpu();
+
+	if (!err &&
+	    copy_to_user(&uattr->test.retval, &info.retval, sizeof(u32)))
+		err = -EFAULT;
+
+out:
+	kfree(info.ctx);
+	return err;
+}
+
+static void *bpf_ctx_init(const union bpf_attr *kattr, u32 max_size)
+{
+	void __user *data_in = u64_to_user_ptr(kattr->test.ctx_in);
+	void __user *data_out = u64_to_user_ptr(kattr->test.ctx_out);
+	u32 size = kattr->test.ctx_size_in;
+	void *data;
+	int err;
+
+	if (!data_in && !data_out)
+		return NULL;
+
+	data = kzalloc(max_size, GFP_USER);
+	if (!data)
+		return ERR_PTR(-ENOMEM);
+
+	if (data_in) {
+		err = bpf_check_uarg_tail_zero(data_in, max_size, size);
+		if (err) {
+			kfree(data);
+			return ERR_PTR(err);
+		}
+
+		size = min_t(u32, max_size, size);
+		if (copy_from_user(data, data_in, size)) {
+			kfree(data);
+			return ERR_PTR(-EFAULT);
+		}
+	}
+	return data;
+}
+
+static int bpf_ctx_finish(const union bpf_attr *kattr,
+			  union bpf_attr __user *uattr, const void *data,
+			  u32 size)
+{
+	void __user *data_out = u64_to_user_ptr(kattr->test.ctx_out);
+	int err = -EFAULT;
+	u32 copy_size = size;
+
+	if (!data || !data_out)
+		return 0;
+
+	if (copy_size > kattr->test.ctx_size_out) {
+		copy_size = kattr->test.ctx_size_out;
+		err = -ENOSPC;
+	}
+
+	if (copy_to_user(data_out, data, copy_size))
+		goto out;
+	if (copy_to_user(&uattr->test.ctx_size_out, &size, sizeof(size)))
+		goto out;
+	if (err != -ENOSPC)
+		err = 0;
+out:
+	return err;
+}
+
+/**
+ * range_is_zero - test whether buffer is initialized
+ * @buf: buffer to check
+ * @from: check from this position
+ * @to: check up until (excluding) this position
+ *
+ * This function returns true if the there is a non-zero byte
+ * in the buf in the range [from,to).
+ */
+static inline bool range_is_zero(void *buf, size_t from, size_t to)
+{
+	return !memchr_inv((u8 *)buf + from, 0, to - from);
+}
+
+static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb)
+{
+	struct qdisc_skb_cb *cb = (struct qdisc_skb_cb *)skb->cb;
+
+	if (!__skb)
+		return 0;
+
+	/* make sure the fields we don't use are zeroed */
+	if (!range_is_zero(__skb, 0, offsetof(struct __sk_buff, mark)))
+		return -EINVAL;
+
+	/* mark is allowed */
+
+	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, mark),
+			   offsetof(struct __sk_buff, priority)))
+		return -EINVAL;
+
+	/* priority is allowed */
+
+	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, priority),
+			   offsetof(struct __sk_buff, ifindex)))
+		return -EINVAL;
+
+	/* ifindex is allowed */
+
+	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, ifindex),
+			   offsetof(struct __sk_buff, cb)))
+		return -EINVAL;
+
+	/* cb is allowed */
+
+	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, cb),
+			   offsetof(struct __sk_buff, tstamp)))
+		return -EINVAL;
+
+	/* tstamp is allowed */
+	/* wire_len is allowed */
+	/* gso_segs is allowed */
+
+	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_segs),
+			   offsetof(struct __sk_buff, gso_size)))
+		return -EINVAL;
+
+	/* gso_size is allowed */
+
+	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_size),
+			   sizeof(struct __sk_buff)))
+		return -EINVAL;
+
+	skb->mark = __skb->mark;
+	skb->priority = __skb->priority;
+	skb->tstamp = __skb->tstamp;
+	memcpy(&cb->data, __skb->cb, QDISC_CB_PRIV_LEN);
+
+	if (__skb->wire_len == 0) {
+		cb->pkt_len = skb->len;
+	} else {
+		if (__skb->wire_len < skb->len ||
+		    __skb->wire_len > GSO_MAX_SIZE)
+			return -EINVAL;
+		cb->pkt_len = __skb->wire_len;
+	}
+
+	if (__skb->gso_segs > GSO_MAX_SEGS)
+		return -EINVAL;
+	skb_shinfo(skb)->gso_segs = __skb->gso_segs;
+	skb_shinfo(skb)->gso_size = __skb->gso_size;
+
+	return 0;
+}
+
+static void convert_skb_to___skb(struct sk_buff *skb, struct __sk_buff *__skb)
+{
+	struct qdisc_skb_cb *cb = (struct qdisc_skb_cb *)skb->cb;
+
+	if (!__skb)
+		return;
+
+	__skb->mark = skb->mark;
+	__skb->priority = skb->priority;
+	__skb->ifindex = skb->dev->ifindex;
+	__skb->tstamp = skb->tstamp;
+	memcpy(__skb->cb, &cb->data, QDISC_CB_PRIV_LEN);
+	__skb->wire_len = cb->pkt_len;
+	__skb->gso_segs = skb_shinfo(skb)->gso_segs;
+}
+
+static struct proto bpf_dummy_proto = {
+	.name   = "bpf_dummy",
+	.owner  = THIS_MODULE,
+	.obj_size = sizeof(struct sock),
+};
+
+int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
+			  union bpf_attr __user *uattr)
+{
+	bool is_l2 = false, is_direct_pkt_access = false;
+	struct net *net = current->nsproxy->net_ns;
+	struct net_device *dev = net->loopback_dev;
+	u32 size = kattr->test.data_size_in;
+	u32 repeat = kattr->test.repeat;
+	struct __sk_buff *ctx = NULL;
+	u32 retval, duration;
+	int hh_len = ETH_HLEN;
+	struct sk_buff *skb;
+	struct sock *sk;
+	void *data;
+	int ret;
+
+	if (kattr->test.flags || kattr->test.cpu)
+		return -EINVAL;
+
+	data = bpf_test_init(kattr, size, NET_SKB_PAD + NET_IP_ALIGN,
+			     SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	ctx = bpf_ctx_init(kattr, sizeof(struct __sk_buff));
+	if (IS_ERR(ctx)) {
+		kfree(data);
+		return PTR_ERR(ctx);
+	}
+
+	switch (prog->type) {
+	case BPF_PROG_TYPE_SCHED_CLS:
+	case BPF_PROG_TYPE_SCHED_ACT:
+		is_l2 = true;
+		fallthrough;
+	case BPF_PROG_TYPE_LWT_IN:
+	case BPF_PROG_TYPE_LWT_OUT:
+	case BPF_PROG_TYPE_LWT_XMIT:
+		is_direct_pkt_access = true;
+		break;
+	default:
+		break;
+	}
+
+	sk = sk_alloc(net, AF_UNSPEC, GFP_USER, &bpf_dummy_proto, 1);
+	if (!sk) {
+		kfree(data);
+		kfree(ctx);
+		return -ENOMEM;
+	}
+	sock_init_data(NULL, sk);
+
+	skb = build_skb(data, 0);
+	if (!skb) {
+		kfree(data);
+		kfree(ctx);
+		sk_free(sk);
+		return -ENOMEM;
+	}
+	skb->sk = sk;
+
+	skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
+	__skb_put(skb, size);
+	if (ctx && ctx->ifindex > 1) {
+		dev = dev_get_by_index(net, ctx->ifindex);
+		if (!dev) {
+			ret = -ENODEV;
+			goto out;
+		}
+	}
+	skb->protocol = eth_type_trans(skb, dev);
+	skb_reset_network_header(skb);
+
+	switch (skb->protocol) {
+	case htons(ETH_P_IP):
+		sk->sk_family = AF_INET;
+		if (sizeof(struct iphdr) <= skb_headlen(skb)) {
+			sk->sk_rcv_saddr = ip_hdr(skb)->saddr;
+			sk->sk_daddr = ip_hdr(skb)->daddr;
+		}
+		break;
+#if IS_ENABLED(CONFIG_IPV6)
+	case htons(ETH_P_IPV6):
+		sk->sk_family = AF_INET6;
+		if (sizeof(struct ipv6hdr) <= skb_headlen(skb)) {
+			sk->sk_v6_rcv_saddr = ipv6_hdr(skb)->saddr;
+			sk->sk_v6_daddr = ipv6_hdr(skb)->daddr;
+		}
+		break;
+#endif
+	default:
+		break;
+	}
+
+	if (is_l2)
+		__skb_push(skb, hh_len);
+	if (is_direct_pkt_access)
+		bpf_compute_data_pointers(skb);
+	ret = convert___skb_to_skb(skb, ctx);
+	if (ret)
+		goto out;
+	ret = bpf_test_run(prog, skb, repeat, &retval, &duration, false);
+	if (ret)
+		goto out;
+	if (!is_l2) {
+		if (skb_headroom(skb) < hh_len) {
+			int nhead = HH_DATA_ALIGN(hh_len - skb_headroom(skb));
+
+			if (pskb_expand_head(skb, nhead, 0, GFP_USER)) {
+				ret = -ENOMEM;
+				goto out;
+			}
+		}
+		memset(__skb_push(skb, hh_len), 0, hh_len);
+	}
+	convert_skb_to___skb(skb, ctx);
+
+	size = skb->len;
+	/* bpf program can never convert linear skb to non-linear */
+	if (WARN_ON_ONCE(skb_is_nonlinear(skb)))
+		size = skb_headlen(skb);
+	ret = bpf_test_finish(kattr, uattr, skb->data, size, retval, duration);
+	if (!ret)
+		ret = bpf_ctx_finish(kattr, uattr, ctx,
+				     sizeof(struct __sk_buff));
+out:
+	if (dev && dev != net->loopback_dev)
+		dev_put(dev);
+	kfree_skb(skb);
+	sk_free(sk);
+	kfree(ctx);
+	return ret;
+}
+
+int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr,
+			  union bpf_attr __user *uattr)
+{
+	u32 tailroom = SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
+	u32 headroom = XDP_PACKET_HEADROOM;
+	u32 size = kattr->test.data_size_in;
+	u32 repeat = kattr->test.repeat;
+	struct netdev_rx_queue *rxqueue;
+	struct xdp_buff xdp = {};
+	u32 retval, duration;
+	u32 max_data_sz;
+	void *data;
+	int ret;
+
+	if (prog->expected_attach_type == BPF_XDP_DEVMAP ||
+	    prog->expected_attach_type == BPF_XDP_CPUMAP)
+		return -EINVAL;
+	if (kattr->test.ctx_in || kattr->test.ctx_out)
+		return -EINVAL;
+
+	/* XDP have extra tailroom as (most) drivers use full page */
+	max_data_sz = 4096 - headroom - tailroom;
+
+	data = bpf_test_init(kattr, max_data_sz, headroom, tailroom);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	xdp.data_hard_start = data;
+	xdp.data = data + headroom;
+	xdp.data_meta = xdp.data;
+	xdp.data_end = xdp.data + size;
+	xdp.frame_sz = headroom + max_data_sz + tailroom;
+
+	rxqueue = __netif_get_rx_queue(current->nsproxy->net_ns->loopback_dev, 0);
+	xdp.rxq = &rxqueue->xdp_rxq;
+	bpf_prog_change_xdp(NULL, prog);
+	ret = bpf_test_run(prog, &xdp, repeat, &retval, &duration, true);
+	if (ret)
+		goto out;
+	if (xdp.data != data + headroom || xdp.data_end != xdp.data + size)
+		size = xdp.data_end - xdp.data;
+	ret = bpf_test_finish(kattr, uattr, xdp.data, size, retval, duration);
+out:
+	bpf_prog_change_xdp(prog, NULL);
+	kfree(data);
+	return ret;
+}
+
+static int verify_user_bpf_flow_keys(struct bpf_flow_keys *ctx)
+{
+	/* make sure the fields we don't use are zeroed */
+	if (!range_is_zero(ctx, 0, offsetof(struct bpf_flow_keys, flags)))
+		return -EINVAL;
+
+	/* flags is allowed */
+
+	if (!range_is_zero(ctx, offsetofend(struct bpf_flow_keys, flags),
+			   sizeof(struct bpf_flow_keys)))
+		return -EINVAL;
+
+	return 0;
+}
+
+int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
+				     const union bpf_attr *kattr,
+				     union bpf_attr __user *uattr)
+{
+	struct bpf_test_timer t = { NO_PREEMPT };
+	u32 size = kattr->test.data_size_in;
+	struct bpf_flow_dissector ctx = {};
+	u32 repeat = kattr->test.repeat;
+	struct bpf_flow_keys *user_ctx;
+	struct bpf_flow_keys flow_keys;
+	const struct ethhdr *eth;
+	unsigned int flags = 0;
+	u32 retval, duration;
+	void *data;
+	int ret;
+
+	if (prog->type != BPF_PROG_TYPE_FLOW_DISSECTOR)
+		return -EINVAL;
+
+	if (kattr->test.flags || kattr->test.cpu)
+		return -EINVAL;
+
+	if (size < ETH_HLEN)
+		return -EINVAL;
+
+	data = bpf_test_init(kattr, size, 0, 0);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	eth = (struct ethhdr *)data;
+
+	if (!repeat)
+		repeat = 1;
+
+	user_ctx = bpf_ctx_init(kattr, sizeof(struct bpf_flow_keys));
+	if (IS_ERR(user_ctx)) {
+		kfree(data);
+		return PTR_ERR(user_ctx);
+	}
+	if (user_ctx) {
+		ret = verify_user_bpf_flow_keys(user_ctx);
+		if (ret)
+			goto out;
+		flags = user_ctx->flags;
+	}
+
+	ctx.flow_keys = &flow_keys;
+	ctx.data = data;
+	ctx.data_end = (__u8 *)data + size;
+
+	bpf_test_timer_enter(&t);
+	do {
+		retval = bpf_flow_dissect(prog, &ctx, eth->h_proto, ETH_HLEN,
+					  size, flags);
+	} while (bpf_test_timer_continue(&t, repeat, &ret, &duration));
+	bpf_test_timer_leave(&t);
+
+	if (ret < 0)
+		goto out;
+
+	ret = bpf_test_finish(kattr, uattr, &flow_keys, sizeof(flow_keys),
+			      retval, duration);
+	if (!ret)
+		ret = bpf_ctx_finish(kattr, uattr, user_ctx,
+				     sizeof(struct bpf_flow_keys));
+
+out:
+	kfree(user_ctx);
+	kfree(data);
+	return ret;
+}
+
+int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog, const union bpf_attr *kattr,
+				union bpf_attr __user *uattr)
+{
+	struct bpf_test_timer t = { NO_PREEMPT };
+	struct bpf_prog_array *progs = NULL;
+	struct bpf_sk_lookup_kern ctx = {};
+	u32 repeat = kattr->test.repeat;
+	struct bpf_sk_lookup *user_ctx;
+	u32 retval, duration;
+	int ret = -EINVAL;
+
+	if (prog->type != BPF_PROG_TYPE_SK_LOOKUP)
+		return -EINVAL;
+
+	if (kattr->test.flags || kattr->test.cpu)
+		return -EINVAL;
+
+	if (kattr->test.data_in || kattr->test.data_size_in || kattr->test.data_out ||
+	    kattr->test.data_size_out)
+		return -EINVAL;
+
+	if (!repeat)
+		repeat = 1;
+
+	user_ctx = bpf_ctx_init(kattr, sizeof(*user_ctx));
+	if (IS_ERR(user_ctx))
+		return PTR_ERR(user_ctx);
+
+	if (!user_ctx)
+		return -EINVAL;
+
+	if (user_ctx->sk)
+		goto out;
+
+	if (!range_is_zero(user_ctx, offsetofend(typeof(*user_ctx), local_port), sizeof(*user_ctx)))
+		goto out;
+
+	if (user_ctx->local_port > U16_MAX || user_ctx->remote_port > U16_MAX) {
+		ret = -ERANGE;
+		goto out;
+	}
+
+	ctx.family = (u16)user_ctx->family;
+	ctx.protocol = (u16)user_ctx->protocol;
+	ctx.dport = (u16)user_ctx->local_port;
+	ctx.sport = (__force __be16)user_ctx->remote_port;
+
+	switch (ctx.family) {
+	case AF_INET:
+		ctx.v4.daddr = (__force __be32)user_ctx->local_ip4;
+		ctx.v4.saddr = (__force __be32)user_ctx->remote_ip4;
+		break;
+
+#if IS_ENABLED(CONFIG_IPV6)
+	case AF_INET6:
+		ctx.v6.daddr = (struct in6_addr *)user_ctx->local_ip6;
+		ctx.v6.saddr = (struct in6_addr *)user_ctx->remote_ip6;
+		break;
+#endif
+
+	default:
+		ret = -EAFNOSUPPORT;
+		goto out;
+	}
+
+	progs = bpf_prog_array_alloc(1, GFP_KERNEL);
+	if (!progs) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	progs->items[0].prog = prog;
+
+	bpf_test_timer_enter(&t);
+	do {
+		ctx.selected_sk = NULL;
+		retval = BPF_PROG_SK_LOOKUP_RUN_ARRAY(progs, ctx, BPF_PROG_RUN);
+	} while (bpf_test_timer_continue(&t, repeat, &ret, &duration));
+	bpf_test_timer_leave(&t);
+
+	if (ret < 0)
+		goto out;
+
+	user_ctx->cookie = 0;
+	if (ctx.selected_sk) {
+		if (ctx.selected_sk->sk_reuseport && !ctx.no_reuseport) {
+			ret = -EOPNOTSUPP;
+			goto out;
+		}
+
+		user_ctx->cookie = sock_gen_cookie(ctx.selected_sk);
+	}
+
+	ret = bpf_test_finish(kattr, uattr, NULL, 0, retval, duration);
+	if (!ret)
+		ret = bpf_ctx_finish(kattr, uattr, user_ctx, sizeof(*user_ctx));
+
+out:
+	bpf_prog_array_free(progs);
+	kfree(user_ctx);
+	return ret;
+}