137 static u32 cpu_map_bpf_prog_run_skb(struct bpf_cpu_map_entry *rcpu,  in cpu_map_bpf_prog_run_skb()  argument
148 		act = bpf_prog_run_generic_xdp(skb, &xdp, rcpu->prog);  in cpu_map_bpf_prog_run_skb()
155 						      rcpu->prog);  in cpu_map_bpf_prog_run_skb()
164 			bpf_warn_invalid_xdp_action(NULL, rcpu->prog, act);  in cpu_map_bpf_prog_run_skb()
167 			trace_xdp_exception(skb->dev, rcpu->prog, act);  in cpu_map_bpf_prog_run_skb()
181 static int cpu_map_bpf_prog_run_xdp(struct bpf_cpu_map_entry *rcpu,  in cpu_map_bpf_prog_run_xdp()  argument
203 		act = bpf_prog_run_xdp(rcpu->prog, &xdp);  in cpu_map_bpf_prog_run_xdp()
216 					      rcpu->prog);  in cpu_map_bpf_prog_run_xdp()
225 			bpf_warn_invalid_xdp_action(NULL, rcpu->prog, act);  in cpu_map_bpf_prog_run_xdp()
247 static void cpu_map_bpf_prog_run(struct bpf_cpu_map_entry *rcpu, void **frames,  in cpu_map_bpf_prog_run()  argument
253 	if (!rcpu->prog)  in cpu_map_bpf_prog_run()
259 	ret->xdp_n = cpu_map_bpf_prog_run_xdp(rcpu, frames, ret->xdp_n, stats);  in cpu_map_bpf_prog_run()
261 		ret->skb_n = cpu_map_bpf_prog_run_skb(rcpu, skbs, ret->skb_n,  in cpu_map_bpf_prog_run()
275 static void cpu_map_gro_flush(struct bpf_cpu_map_entry *rcpu, bool empty)  in cpu_map_gro_flush()  argument
285 	gro_flush(&rcpu->gro, !empty && HZ >= 1000);  in cpu_map_gro_flush()
286 	gro_normal_list(&rcpu->gro);  in cpu_map_gro_flush()
291 	struct bpf_cpu_map_entry *rcpu = data;  in cpu_map_kthread_run()  local
295 	complete(&rcpu->kthread_running);  in cpu_map_kthread_run()
303 	while (!kthread_should_stop() || !__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
313 		if (__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
316 			if (__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
333 		n = __ptr_ring_consume_batched(rcpu->queue, frames,  in cpu_map_kthread_run()
360 		cpu_map_bpf_prog_run(rcpu, frames, skbs, &ret, &stats);  in cpu_map_kthread_run()
388 		trace_xdp_cpumap_kthread(rcpu->map_id, n, kmem_alloc_drops,  in cpu_map_kthread_run()
392 			gro_receive_skb(&rcpu->gro, skbs[i]);  in cpu_map_kthread_run()
396 		empty = __ptr_ring_empty(rcpu->queue);  in cpu_map_kthread_run()
398 			cpu_map_gro_flush(rcpu, empty);  in cpu_map_kthread_run()
409 static int __cpu_map_load_bpf_program(struct bpf_cpu_map_entry *rcpu,  in __cpu_map_load_bpf_program()  argument
424 	rcpu->value.bpf_prog.id = prog->aux->id;  in __cpu_map_load_bpf_program()
425 	rcpu->prog = prog;  in __cpu_map_load_bpf_program()
436 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_entry_alloc()  local
442 	rcpu = bpf_map_kmalloc_node(map, sizeof(*rcpu), gfp | __GFP_ZERO, numa);  in __cpu_map_entry_alloc()
443 	if (!rcpu)  in __cpu_map_entry_alloc()
447 	rcpu->bulkq = bpf_map_alloc_percpu(map, sizeof(*rcpu->bulkq),  in __cpu_map_entry_alloc()
449 	if (!rcpu->bulkq)  in __cpu_map_entry_alloc()
453 		bq = per_cpu_ptr(rcpu->bulkq, i);  in __cpu_map_entry_alloc()
454 		bq->obj = rcpu;  in __cpu_map_entry_alloc()
458 	rcpu->queue = bpf_map_kmalloc_node(map, sizeof(*rcpu->queue), gfp,  in __cpu_map_entry_alloc()
460 	if (!rcpu->queue)  in __cpu_map_entry_alloc()
463 	err = ptr_ring_init(rcpu->queue, value->qsize, gfp);  in __cpu_map_entry_alloc()
467 	rcpu->cpu    = cpu;  in __cpu_map_entry_alloc()
468 	rcpu->map_id = map->id;  in __cpu_map_entry_alloc()
469 	rcpu->value.qsize  = value->qsize;  in __cpu_map_entry_alloc()
470 	gro_init(&rcpu->gro);  in __cpu_map_entry_alloc()
472 	if (fd > 0 && __cpu_map_load_bpf_program(rcpu, map, fd))  in __cpu_map_entry_alloc()
476 	init_completion(&rcpu->kthread_running);  in __cpu_map_entry_alloc()
477 	rcpu->kthread = kthread_create_on_node(cpu_map_kthread_run, rcpu, numa,  in __cpu_map_entry_alloc()
480 	if (IS_ERR(rcpu->kthread))  in __cpu_map_entry_alloc()
484 	kthread_bind(rcpu->kthread, cpu);  in __cpu_map_entry_alloc()
485 	wake_up_process(rcpu->kthread);  in __cpu_map_entry_alloc()
491 	wait_for_completion(&rcpu->kthread_running);  in __cpu_map_entry_alloc()
493 	return rcpu;  in __cpu_map_entry_alloc()
496 	if (rcpu->prog)  in __cpu_map_entry_alloc()
497 		bpf_prog_put(rcpu->prog);  in __cpu_map_entry_alloc()
499 	gro_cleanup(&rcpu->gro);  in __cpu_map_entry_alloc()
500 	ptr_ring_cleanup(rcpu->queue, NULL);  in __cpu_map_entry_alloc()
502 	kfree(rcpu->queue);  in __cpu_map_entry_alloc()
504 	free_percpu(rcpu->bulkq);  in __cpu_map_entry_alloc()
506 	kfree(rcpu);  in __cpu_map_entry_alloc()
512 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_entry_free()  local
519 	rcpu = container_of(to_rcu_work(work), struct bpf_cpu_map_entry, free_work);  in __cpu_map_entry_free()
525 	kthread_stop(rcpu->kthread);  in __cpu_map_entry_free()
527 	if (rcpu->prog)  in __cpu_map_entry_free()
528 		bpf_prog_put(rcpu->prog);  in __cpu_map_entry_free()
529 	gro_cleanup(&rcpu->gro);  in __cpu_map_entry_free()
531 	__cpu_map_ring_cleanup(rcpu->queue);  in __cpu_map_entry_free()
532 	ptr_ring_cleanup(rcpu->queue, NULL);  in __cpu_map_entry_free()
533 	kfree(rcpu->queue);  in __cpu_map_entry_free()
534 	free_percpu(rcpu->bulkq);  in __cpu_map_entry_free()
535 	kfree(rcpu);  in __cpu_map_entry_free()
547 				    u32 key_cpu, struct bpf_cpu_map_entry *rcpu)  in __cpu_map_entry_replace()  argument
551 	old_rcpu = unrcu_pointer(xchg(&cmap->cpu_map[key_cpu], RCU_INITIALIZER(rcpu)));  in __cpu_map_entry_replace()
576 	struct bpf_cpu_map_entry *rcpu;  in cpu_map_update_elem()  local
596 		rcpu = NULL; /* Same as deleting */  in cpu_map_update_elem()
599 		rcpu = __cpu_map_entry_alloc(map, &cpumap_value, key_cpu);  in cpu_map_update_elem()
600 		if (!rcpu)  in cpu_map_update_elem()
604 	__cpu_map_entry_replace(cmap, key_cpu, rcpu);  in cpu_map_update_elem()
628 		struct bpf_cpu_map_entry *rcpu;  in cpu_map_free()  local
630 		rcpu = rcu_dereference_raw(cmap->cpu_map[i]);  in cpu_map_free()
631 		if (!rcpu)  in cpu_map_free()
635 		__cpu_map_entry_free(&rcpu->free_work.work);  in cpu_map_free()
648 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_lookup_elem()  local
653 	rcpu = rcu_dereference_check(cmap->cpu_map[key],  in __cpu_map_lookup_elem()
655 	return rcpu;  in __cpu_map_lookup_elem()
660 	struct bpf_cpu_map_entry *rcpu =  in cpu_map_lookup_elem()  local
663 	return rcpu ? &rcpu->value : NULL;  in cpu_map_lookup_elem()
715 	struct bpf_cpu_map_entry *rcpu = bq->obj;  in bq_flush_to_queue()  local
717 	const int to_cpu = rcpu->cpu;  in bq_flush_to_queue()
724 	q = rcpu->queue;  in bq_flush_to_queue()
744 	trace_xdp_cpumap_enqueue(rcpu->map_id, processed, drops, to_cpu);  in bq_flush_to_queue()
750 static void bq_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf)  in bq_enqueue()  argument
752 	struct xdp_bulk_queue *bq = this_cpu_ptr(rcpu->bulkq);  in bq_enqueue()
775 int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf,  in cpu_map_enqueue()  argument
781 	bq_enqueue(rcpu, xdpf);  in cpu_map_enqueue()
785 int cpu_map_generic_redirect(struct bpf_cpu_map_entry *rcpu,  in cpu_map_generic_redirect()  argument
794 	ret = ptr_ring_produce(rcpu->queue, skb);  in cpu_map_generic_redirect()
798 	wake_up_process(rcpu->kthread);  in cpu_map_generic_redirect()
800 	trace_xdp_cpumap_enqueue(rcpu->map_id, !ret, !!ret, rcpu->cpu);  in cpu_map_generic_redirect()