1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2017 Facebook
5 #include <linux/btf_ids.h>
6 #include <linux/slab.h>
7 #include <linux/vmalloc.h>
8 #include <linux/etherdevice.h>
9 #include <linux/filter.h>
10 #include <linux/rcupdate_trace.h>
11 #include <linux/sched/signal.h>
12 #include <net/bpf_sk_storage.h>
15 #include <net/net_namespace.h>
16 #include <linux/error-injection.h>
17 #include <linux/smp.h>
18 #include <linux/sock_diag.h>
21 #define CREATE_TRACE_POINTS
22 #include <trace/events/bpf_test_run.h>
24 struct bpf_test_timer {
25 enum { NO_PREEMPT, NO_MIGRATE } mode;
27 u64 time_start, time_spent;
30 static void bpf_test_timer_enter(struct bpf_test_timer *t)
34 if (t->mode == NO_PREEMPT)
39 t->time_start = ktime_get_ns();
42 static void bpf_test_timer_leave(struct bpf_test_timer *t)
47 if (t->mode == NO_PREEMPT)
54 static bool bpf_test_timer_continue(struct bpf_test_timer *t, u32 repeat, int *err, u32 *duration)
60 t->time_spent += ktime_get_ns() - t->time_start;
61 do_div(t->time_spent, t->i);
62 *duration = t->time_spent > U32_MAX ? U32_MAX : (u32)t->time_spent;
67 if (signal_pending(current)) {
68 /* During iteration: we've been cancelled, abort. */
74 /* During iteration: we need to reschedule between runs. */
75 t->time_spent += ktime_get_ns() - t->time_start;
76 bpf_test_timer_leave(t);
78 bpf_test_timer_enter(t);
81 /* Do another round. */
89 static int bpf_test_run(struct bpf_prog *prog, void *ctx, u32 repeat,
90 u32 *retval, u32 *time, bool xdp)
92 struct bpf_prog_array_item item = {.prog = prog};
93 struct bpf_run_ctx *old_ctx;
94 struct bpf_cg_run_ctx run_ctx;
95 struct bpf_test_timer t = { NO_MIGRATE };
96 enum bpf_cgroup_storage_type stype;
99 for_each_cgroup_storage_type(stype) {
100 item.cgroup_storage[stype] = bpf_cgroup_storage_alloc(prog, stype);
101 if (IS_ERR(item.cgroup_storage[stype])) {
102 item.cgroup_storage[stype] = NULL;
103 for_each_cgroup_storage_type(stype)
104 bpf_cgroup_storage_free(item.cgroup_storage[stype]);
112 bpf_test_timer_enter(&t);
113 old_ctx = bpf_set_run_ctx(&run_ctx.run_ctx);
115 run_ctx.prog_item = &item;
117 *retval = bpf_prog_run_xdp(prog, ctx);
119 *retval = bpf_prog_run(prog, ctx);
120 } while (bpf_test_timer_continue(&t, repeat, &ret, time));
121 bpf_reset_run_ctx(old_ctx);
122 bpf_test_timer_leave(&t);
124 for_each_cgroup_storage_type(stype)
125 bpf_cgroup_storage_free(item.cgroup_storage[stype]);
130 static int bpf_test_finish(const union bpf_attr *kattr,
131 union bpf_attr __user *uattr, const void *data,
132 u32 size, u32 retval, u32 duration)
134 void __user *data_out = u64_to_user_ptr(kattr->test.data_out);
136 u32 copy_size = size;
138 /* Clamp copy if the user has provided a size hint, but copy the full
139 * buffer if not to retain old behaviour.
141 if (kattr->test.data_size_out &&
142 copy_size > kattr->test.data_size_out) {
143 copy_size = kattr->test.data_size_out;
147 if (data_out && copy_to_user(data_out, data, copy_size))
149 if (copy_to_user(&uattr->test.data_size_out, &size, sizeof(size)))
151 if (copy_to_user(&uattr->test.retval, &retval, sizeof(retval)))
153 if (copy_to_user(&uattr->test.duration, &duration, sizeof(duration)))
158 trace_bpf_test_finish(&err);
162 /* Integer types of various sizes and pointer combinations cover variety of
163 * architecture dependent calling conventions. 7+ can be supported in the
167 __diag_ignore(GCC, 8, "-Wmissing-prototypes",
168 "Global functions as their definitions will be in vmlinux BTF");
169 int noinline bpf_fentry_test1(int a)
174 int noinline bpf_fentry_test2(int a, u64 b)
179 int noinline bpf_fentry_test3(char a, int b, u64 c)
184 int noinline bpf_fentry_test4(void *a, char b, int c, u64 d)
186 return (long)a + b + c + d;
189 int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e)
191 return a + (long)b + c + d + e;
194 int noinline bpf_fentry_test6(u64 a, void *b, short c, int d, void *e, u64 f)
196 return a + (long)b + c + d + (long)e + f;
199 struct bpf_fentry_test_t {
200 struct bpf_fentry_test_t *a;
203 int noinline bpf_fentry_test7(struct bpf_fentry_test_t *arg)
208 int noinline bpf_fentry_test8(struct bpf_fentry_test_t *arg)
213 int noinline bpf_modify_return_test(int a, int *b)
219 u64 noinline bpf_kfunc_call_test1(struct sock *sk, u32 a, u64 b, u32 c, u64 d)
221 return a + b + c + d;
224 int noinline bpf_kfunc_call_test2(struct sock *sk, u32 a, u32 b)
229 struct sock * noinline bpf_kfunc_call_test3(struct sock *sk)
236 ALLOW_ERROR_INJECTION(bpf_modify_return_test, ERRNO);
238 BTF_SET_START(test_sk_kfunc_ids)
239 BTF_ID(func, bpf_kfunc_call_test1)
240 BTF_ID(func, bpf_kfunc_call_test2)
241 BTF_ID(func, bpf_kfunc_call_test3)
242 BTF_SET_END(test_sk_kfunc_ids)
244 bool bpf_prog_test_check_kfunc_call(u32 kfunc_id)
246 return btf_id_set_contains(&test_sk_kfunc_ids, kfunc_id);
249 static void *bpf_test_init(const union bpf_attr *kattr, u32 size,
250 u32 headroom, u32 tailroom)
252 void __user *data_in = u64_to_user_ptr(kattr->test.data_in);
253 u32 user_size = kattr->test.data_size_in;
256 if (size < ETH_HLEN || size > PAGE_SIZE - headroom - tailroom)
257 return ERR_PTR(-EINVAL);
259 if (user_size > size)
260 return ERR_PTR(-EMSGSIZE);
262 size = SKB_DATA_ALIGN(size);
263 data = kzalloc(size + headroom + tailroom, GFP_USER);
265 return ERR_PTR(-ENOMEM);
267 if (copy_from_user(data + headroom, data_in, user_size)) {
269 return ERR_PTR(-EFAULT);
275 int bpf_prog_test_run_tracing(struct bpf_prog *prog,
276 const union bpf_attr *kattr,
277 union bpf_attr __user *uattr)
279 struct bpf_fentry_test_t arg = {};
280 u16 side_effect = 0, ret = 0;
281 int b = 2, err = -EFAULT;
284 if (kattr->test.flags || kattr->test.cpu)
287 switch (prog->expected_attach_type) {
288 case BPF_TRACE_FENTRY:
289 case BPF_TRACE_FEXIT:
290 if (bpf_fentry_test1(1) != 2 ||
291 bpf_fentry_test2(2, 3) != 5 ||
292 bpf_fentry_test3(4, 5, 6) != 15 ||
293 bpf_fentry_test4((void *)7, 8, 9, 10) != 34 ||
294 bpf_fentry_test5(11, (void *)12, 13, 14, 15) != 65 ||
295 bpf_fentry_test6(16, (void *)17, 18, 19, (void *)20, 21) != 111 ||
296 bpf_fentry_test7((struct bpf_fentry_test_t *)0) != 0 ||
297 bpf_fentry_test8(&arg) != 0)
300 case BPF_MODIFY_RETURN:
301 ret = bpf_modify_return_test(1, &b);
309 retval = ((u32)side_effect << 16) | ret;
310 if (copy_to_user(&uattr->test.retval, &retval, sizeof(retval)))
315 trace_bpf_test_finish(&err);
319 struct bpf_raw_tp_test_run_info {
320 struct bpf_prog *prog;
326 __bpf_prog_test_run_raw_tp(void *data)
328 struct bpf_raw_tp_test_run_info *info = data;
331 info->retval = bpf_prog_run(info->prog, info->ctx);
335 int bpf_prog_test_run_raw_tp(struct bpf_prog *prog,
336 const union bpf_attr *kattr,
337 union bpf_attr __user *uattr)
339 void __user *ctx_in = u64_to_user_ptr(kattr->test.ctx_in);
340 __u32 ctx_size_in = kattr->test.ctx_size_in;
341 struct bpf_raw_tp_test_run_info info;
342 int cpu = kattr->test.cpu, err = 0;
345 /* doesn't support data_in/out, ctx_out, duration, or repeat */
346 if (kattr->test.data_in || kattr->test.data_out ||
347 kattr->test.ctx_out || kattr->test.duration ||
351 if (ctx_size_in < prog->aux->max_ctx_offset ||
352 ctx_size_in > MAX_BPF_FUNC_ARGS * sizeof(u64))
355 if ((kattr->test.flags & BPF_F_TEST_RUN_ON_CPU) == 0 && cpu != 0)
359 info.ctx = kzalloc(ctx_size_in, GFP_USER);
362 if (copy_from_user(info.ctx, ctx_in, ctx_size_in)) {
372 current_cpu = get_cpu();
373 if ((kattr->test.flags & BPF_F_TEST_RUN_ON_CPU) == 0 ||
374 cpu == current_cpu) {
375 __bpf_prog_test_run_raw_tp(&info);
376 } else if (cpu >= nr_cpu_ids || !cpu_online(cpu)) {
377 /* smp_call_function_single() also checks cpu_online()
378 * after csd_lock(). However, since cpu is from user
379 * space, let's do an extra quick check to filter out
380 * invalid value before smp_call_function_single().
384 err = smp_call_function_single(cpu, __bpf_prog_test_run_raw_tp,
390 copy_to_user(&uattr->test.retval, &info.retval, sizeof(u32)))
398 static void *bpf_ctx_init(const union bpf_attr *kattr, u32 max_size)
400 void __user *data_in = u64_to_user_ptr(kattr->test.ctx_in);
401 void __user *data_out = u64_to_user_ptr(kattr->test.ctx_out);
402 u32 size = kattr->test.ctx_size_in;
406 if (!data_in && !data_out)
409 data = kzalloc(max_size, GFP_USER);
411 return ERR_PTR(-ENOMEM);
414 err = bpf_check_uarg_tail_zero(USER_BPFPTR(data_in), max_size, size);
420 size = min_t(u32, max_size, size);
421 if (copy_from_user(data, data_in, size)) {
423 return ERR_PTR(-EFAULT);
429 static int bpf_ctx_finish(const union bpf_attr *kattr,
430 union bpf_attr __user *uattr, const void *data,
433 void __user *data_out = u64_to_user_ptr(kattr->test.ctx_out);
435 u32 copy_size = size;
437 if (!data || !data_out)
440 if (copy_size > kattr->test.ctx_size_out) {
441 copy_size = kattr->test.ctx_size_out;
445 if (copy_to_user(data_out, data, copy_size))
447 if (copy_to_user(&uattr->test.ctx_size_out, &size, sizeof(size)))
456 * range_is_zero - test whether buffer is initialized
457 * @buf: buffer to check
458 * @from: check from this position
459 * @to: check up until (excluding) this position
461 * This function returns true if the there is a non-zero byte
462 * in the buf in the range [from,to).
464 static inline bool range_is_zero(void *buf, size_t from, size_t to)
466 return !memchr_inv((u8 *)buf + from, 0, to - from);
469 static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb)
471 struct qdisc_skb_cb *cb = (struct qdisc_skb_cb *)skb->cb;
476 /* make sure the fields we don't use are zeroed */
477 if (!range_is_zero(__skb, 0, offsetof(struct __sk_buff, mark)))
480 /* mark is allowed */
482 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, mark),
483 offsetof(struct __sk_buff, priority)))
486 /* priority is allowed */
488 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, priority),
489 offsetof(struct __sk_buff, ifindex)))
492 /* ifindex is allowed */
494 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, ifindex),
495 offsetof(struct __sk_buff, cb)))
500 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, cb),
501 offsetof(struct __sk_buff, tstamp)))
504 /* tstamp is allowed */
505 /* wire_len is allowed */
506 /* gso_segs is allowed */
508 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_segs),
509 offsetof(struct __sk_buff, gso_size)))
512 /* gso_size is allowed */
514 if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_size),
515 sizeof(struct __sk_buff)))
518 skb->mark = __skb->mark;
519 skb->priority = __skb->priority;
520 skb->tstamp = __skb->tstamp;
521 memcpy(&cb->data, __skb->cb, QDISC_CB_PRIV_LEN);
523 if (__skb->wire_len == 0) {
524 cb->pkt_len = skb->len;
526 if (__skb->wire_len < skb->len ||
527 __skb->wire_len > GSO_MAX_SIZE)
529 cb->pkt_len = __skb->wire_len;
532 if (__skb->gso_segs > GSO_MAX_SEGS)
534 skb_shinfo(skb)->gso_segs = __skb->gso_segs;
535 skb_shinfo(skb)->gso_size = __skb->gso_size;
540 static void convert_skb_to___skb(struct sk_buff *skb, struct __sk_buff *__skb)
542 struct qdisc_skb_cb *cb = (struct qdisc_skb_cb *)skb->cb;
547 __skb->mark = skb->mark;
548 __skb->priority = skb->priority;
549 __skb->ifindex = skb->dev->ifindex;
550 __skb->tstamp = skb->tstamp;
551 memcpy(__skb->cb, &cb->data, QDISC_CB_PRIV_LEN);
552 __skb->wire_len = cb->pkt_len;
553 __skb->gso_segs = skb_shinfo(skb)->gso_segs;
556 static struct proto bpf_dummy_proto = {
558 .owner = THIS_MODULE,
559 .obj_size = sizeof(struct sock),
562 int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
563 union bpf_attr __user *uattr)
565 bool is_l2 = false, is_direct_pkt_access = false;
566 struct net *net = current->nsproxy->net_ns;
567 struct net_device *dev = net->loopback_dev;
568 u32 size = kattr->test.data_size_in;
569 u32 repeat = kattr->test.repeat;
570 struct __sk_buff *ctx = NULL;
571 u32 retval, duration;
572 int hh_len = ETH_HLEN;
578 if (kattr->test.flags || kattr->test.cpu)
581 data = bpf_test_init(kattr, size, NET_SKB_PAD + NET_IP_ALIGN,
582 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
584 return PTR_ERR(data);
586 ctx = bpf_ctx_init(kattr, sizeof(struct __sk_buff));
592 switch (prog->type) {
593 case BPF_PROG_TYPE_SCHED_CLS:
594 case BPF_PROG_TYPE_SCHED_ACT:
597 case BPF_PROG_TYPE_LWT_IN:
598 case BPF_PROG_TYPE_LWT_OUT:
599 case BPF_PROG_TYPE_LWT_XMIT:
600 is_direct_pkt_access = true;
606 sk = sk_alloc(net, AF_UNSPEC, GFP_USER, &bpf_dummy_proto, 1);
612 sock_init_data(NULL, sk);
614 skb = build_skb(data, 0);
623 skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
624 __skb_put(skb, size);
625 if (ctx && ctx->ifindex > 1) {
626 dev = dev_get_by_index(net, ctx->ifindex);
632 skb->protocol = eth_type_trans(skb, dev);
633 skb_reset_network_header(skb);
635 switch (skb->protocol) {
636 case htons(ETH_P_IP):
637 sk->sk_family = AF_INET;
638 if (sizeof(struct iphdr) <= skb_headlen(skb)) {
639 sk->sk_rcv_saddr = ip_hdr(skb)->saddr;
640 sk->sk_daddr = ip_hdr(skb)->daddr;
643 #if IS_ENABLED(CONFIG_IPV6)
644 case htons(ETH_P_IPV6):
645 sk->sk_family = AF_INET6;
646 if (sizeof(struct ipv6hdr) <= skb_headlen(skb)) {
647 sk->sk_v6_rcv_saddr = ipv6_hdr(skb)->saddr;
648 sk->sk_v6_daddr = ipv6_hdr(skb)->daddr;
657 __skb_push(skb, hh_len);
658 if (is_direct_pkt_access)
659 bpf_compute_data_pointers(skb);
660 ret = convert___skb_to_skb(skb, ctx);
663 ret = bpf_test_run(prog, skb, repeat, &retval, &duration, false);
667 if (skb_headroom(skb) < hh_len) {
668 int nhead = HH_DATA_ALIGN(hh_len - skb_headroom(skb));
670 if (pskb_expand_head(skb, nhead, 0, GFP_USER)) {
675 memset(__skb_push(skb, hh_len), 0, hh_len);
677 convert_skb_to___skb(skb, ctx);
680 /* bpf program can never convert linear skb to non-linear */
681 if (WARN_ON_ONCE(skb_is_nonlinear(skb)))
682 size = skb_headlen(skb);
683 ret = bpf_test_finish(kattr, uattr, skb->data, size, retval, duration);
685 ret = bpf_ctx_finish(kattr, uattr, ctx,
686 sizeof(struct __sk_buff));
688 if (dev && dev != net->loopback_dev)
696 static int xdp_convert_md_to_buff(struct xdp_md *xdp_md, struct xdp_buff *xdp)
698 unsigned int ingress_ifindex, rx_queue_index;
699 struct netdev_rx_queue *rxqueue;
700 struct net_device *device;
705 if (xdp_md->egress_ifindex != 0)
708 ingress_ifindex = xdp_md->ingress_ifindex;
709 rx_queue_index = xdp_md->rx_queue_index;
711 if (!ingress_ifindex && rx_queue_index)
714 if (ingress_ifindex) {
715 device = dev_get_by_index(current->nsproxy->net_ns,
720 if (rx_queue_index >= device->real_num_rx_queues)
723 rxqueue = __netif_get_rx_queue(device, rx_queue_index);
725 if (!xdp_rxq_info_is_reg(&rxqueue->xdp_rxq))
728 xdp->rxq = &rxqueue->xdp_rxq;
729 /* The device is now tracked in the xdp->rxq for later
734 xdp->data = xdp->data_meta + xdp_md->data;
742 static void xdp_convert_buff_to_md(struct xdp_buff *xdp, struct xdp_md *xdp_md)
747 xdp_md->data = xdp->data - xdp->data_meta;
748 xdp_md->data_end = xdp->data_end - xdp->data_meta;
750 if (xdp_md->ingress_ifindex)
751 dev_put(xdp->rxq->dev);
754 int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr,
755 union bpf_attr __user *uattr)
757 u32 tailroom = SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
758 u32 headroom = XDP_PACKET_HEADROOM;
759 u32 size = kattr->test.data_size_in;
760 u32 repeat = kattr->test.repeat;
761 struct netdev_rx_queue *rxqueue;
762 struct xdp_buff xdp = {};
763 u32 retval, duration;
769 if (prog->expected_attach_type == BPF_XDP_DEVMAP ||
770 prog->expected_attach_type == BPF_XDP_CPUMAP)
773 ctx = bpf_ctx_init(kattr, sizeof(struct xdp_md));
778 /* There can't be user provided data before the meta data */
779 if (ctx->data_meta || ctx->data_end != size ||
780 ctx->data > ctx->data_end ||
781 unlikely(xdp_metalen_invalid(ctx->data)))
783 /* Meta data is allocated from the headroom */
784 headroom -= ctx->data;
787 /* XDP have extra tailroom as (most) drivers use full page */
788 max_data_sz = 4096 - headroom - tailroom;
790 data = bpf_test_init(kattr, max_data_sz, headroom, tailroom);
796 rxqueue = __netif_get_rx_queue(current->nsproxy->net_ns->loopback_dev, 0);
797 xdp_init_buff(&xdp, headroom + max_data_sz + tailroom,
799 xdp_prepare_buff(&xdp, data, headroom, size, true);
801 ret = xdp_convert_md_to_buff(ctx, &xdp);
805 bpf_prog_change_xdp(NULL, prog);
806 ret = bpf_test_run(prog, &xdp, repeat, &retval, &duration, true);
807 /* We convert the xdp_buff back to an xdp_md before checking the return
808 * code so the reference count of any held netdevice will be decremented
809 * even if the test run failed.
811 xdp_convert_buff_to_md(&xdp, ctx);
815 if (xdp.data_meta != data + headroom ||
816 xdp.data_end != xdp.data_meta + size)
817 size = xdp.data_end - xdp.data_meta;
819 ret = bpf_test_finish(kattr, uattr, xdp.data_meta, size, retval,
822 ret = bpf_ctx_finish(kattr, uattr, ctx,
823 sizeof(struct xdp_md));
826 bpf_prog_change_xdp(prog, NULL);
834 static int verify_user_bpf_flow_keys(struct bpf_flow_keys *ctx)
836 /* make sure the fields we don't use are zeroed */
837 if (!range_is_zero(ctx, 0, offsetof(struct bpf_flow_keys, flags)))
840 /* flags is allowed */
842 if (!range_is_zero(ctx, offsetofend(struct bpf_flow_keys, flags),
843 sizeof(struct bpf_flow_keys)))
849 int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
850 const union bpf_attr *kattr,
851 union bpf_attr __user *uattr)
853 struct bpf_test_timer t = { NO_PREEMPT };
854 u32 size = kattr->test.data_size_in;
855 struct bpf_flow_dissector ctx = {};
856 u32 repeat = kattr->test.repeat;
857 struct bpf_flow_keys *user_ctx;
858 struct bpf_flow_keys flow_keys;
859 const struct ethhdr *eth;
860 unsigned int flags = 0;
861 u32 retval, duration;
865 if (prog->type != BPF_PROG_TYPE_FLOW_DISSECTOR)
868 if (kattr->test.flags || kattr->test.cpu)
874 data = bpf_test_init(kattr, size, 0, 0);
876 return PTR_ERR(data);
878 eth = (struct ethhdr *)data;
883 user_ctx = bpf_ctx_init(kattr, sizeof(struct bpf_flow_keys));
884 if (IS_ERR(user_ctx)) {
886 return PTR_ERR(user_ctx);
889 ret = verify_user_bpf_flow_keys(user_ctx);
892 flags = user_ctx->flags;
895 ctx.flow_keys = &flow_keys;
897 ctx.data_end = (__u8 *)data + size;
899 bpf_test_timer_enter(&t);
901 retval = bpf_flow_dissect(prog, &ctx, eth->h_proto, ETH_HLEN,
903 } while (bpf_test_timer_continue(&t, repeat, &ret, &duration));
904 bpf_test_timer_leave(&t);
909 ret = bpf_test_finish(kattr, uattr, &flow_keys, sizeof(flow_keys),
912 ret = bpf_ctx_finish(kattr, uattr, user_ctx,
913 sizeof(struct bpf_flow_keys));
921 int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog, const union bpf_attr *kattr,
922 union bpf_attr __user *uattr)
924 struct bpf_test_timer t = { NO_PREEMPT };
925 struct bpf_prog_array *progs = NULL;
926 struct bpf_sk_lookup_kern ctx = {};
927 u32 repeat = kattr->test.repeat;
928 struct bpf_sk_lookup *user_ctx;
929 u32 retval, duration;
932 if (prog->type != BPF_PROG_TYPE_SK_LOOKUP)
935 if (kattr->test.flags || kattr->test.cpu)
938 if (kattr->test.data_in || kattr->test.data_size_in || kattr->test.data_out ||
939 kattr->test.data_size_out)
945 user_ctx = bpf_ctx_init(kattr, sizeof(*user_ctx));
946 if (IS_ERR(user_ctx))
947 return PTR_ERR(user_ctx);
955 if (!range_is_zero(user_ctx, offsetofend(typeof(*user_ctx), local_port), sizeof(*user_ctx)))
958 if (user_ctx->local_port > U16_MAX) {
963 ctx.family = (u16)user_ctx->family;
964 ctx.protocol = (u16)user_ctx->protocol;
965 ctx.dport = (u16)user_ctx->local_port;
966 ctx.sport = user_ctx->remote_port;
968 switch (ctx.family) {
970 ctx.v4.daddr = (__force __be32)user_ctx->local_ip4;
971 ctx.v4.saddr = (__force __be32)user_ctx->remote_ip4;
974 #if IS_ENABLED(CONFIG_IPV6)
976 ctx.v6.daddr = (struct in6_addr *)user_ctx->local_ip6;
977 ctx.v6.saddr = (struct in6_addr *)user_ctx->remote_ip6;
986 progs = bpf_prog_array_alloc(1, GFP_KERNEL);
992 progs->items[0].prog = prog;
994 bpf_test_timer_enter(&t);
996 ctx.selected_sk = NULL;
997 retval = BPF_PROG_SK_LOOKUP_RUN_ARRAY(progs, ctx, bpf_prog_run);
998 } while (bpf_test_timer_continue(&t, repeat, &ret, &duration));
999 bpf_test_timer_leave(&t);
1004 user_ctx->cookie = 0;
1005 if (ctx.selected_sk) {
1006 if (ctx.selected_sk->sk_reuseport && !ctx.no_reuseport) {
1011 user_ctx->cookie = sock_gen_cookie(ctx.selected_sk);
1014 ret = bpf_test_finish(kattr, uattr, NULL, 0, retval, duration);
1016 ret = bpf_ctx_finish(kattr, uattr, user_ctx, sizeof(*user_ctx));
1019 bpf_prog_array_free(progs);
1024 int bpf_prog_test_run_syscall(struct bpf_prog *prog,
1025 const union bpf_attr *kattr,
1026 union bpf_attr __user *uattr)
1028 void __user *ctx_in = u64_to_user_ptr(kattr->test.ctx_in);
1029 __u32 ctx_size_in = kattr->test.ctx_size_in;
1034 /* doesn't support data_in/out, ctx_out, duration, or repeat or flags */
1035 if (kattr->test.data_in || kattr->test.data_out ||
1036 kattr->test.ctx_out || kattr->test.duration ||
1037 kattr->test.repeat || kattr->test.flags)
1040 if (ctx_size_in < prog->aux->max_ctx_offset ||
1041 ctx_size_in > U16_MAX)
1045 ctx = kzalloc(ctx_size_in, GFP_USER);
1048 if (copy_from_user(ctx, ctx_in, ctx_size_in)) {
1054 rcu_read_lock_trace();
1055 retval = bpf_prog_run_pin_on_cpu(prog, ctx);
1056 rcu_read_unlock_trace();
1058 if (copy_to_user(&uattr->test.retval, &retval, sizeof(u32))) {
1063 if (copy_to_user(ctx_in, ctx, ctx_size_in))