137 static void cpu_map_bpf_prog_run_skb(struct bpf_cpu_map_entry *rcpu,  in cpu_map_bpf_prog_run_skb()  argument
147 		act = bpf_prog_run_generic_xdp(skb, &xdp, rcpu->prog);  in cpu_map_bpf_prog_run_skb()
154 						      rcpu->prog);  in cpu_map_bpf_prog_run_skb()
163 			bpf_warn_invalid_xdp_action(NULL, rcpu->prog, act);  in cpu_map_bpf_prog_run_skb()
166 			trace_xdp_exception(skb->dev, rcpu->prog, act);  in cpu_map_bpf_prog_run_skb()
177 static int cpu_map_bpf_prog_run_xdp(struct bpf_cpu_map_entry *rcpu,  in cpu_map_bpf_prog_run_xdp()  argument
199 		act = bpf_prog_run_xdp(rcpu->prog, &xdp);  in cpu_map_bpf_prog_run_xdp()
213 					      rcpu->prog);  in cpu_map_bpf_prog_run_xdp()
222 			bpf_warn_invalid_xdp_action(NULL, rcpu->prog, act);  in cpu_map_bpf_prog_run_xdp()
238 static int cpu_map_bpf_prog_run(struct bpf_cpu_map_entry *rcpu, void **frames,  in cpu_map_bpf_prog_run()  argument
244 	if (!rcpu->prog)  in cpu_map_bpf_prog_run()
249 	nframes = cpu_map_bpf_prog_run_xdp(rcpu, frames, xdp_n, stats);  in cpu_map_bpf_prog_run()
255 		cpu_map_bpf_prog_run_skb(rcpu, list, stats);  in cpu_map_bpf_prog_run()
264 	struct bpf_cpu_map_entry *rcpu = data;  in cpu_map_kthread_run()  local
266 	complete(&rcpu->kthread_running);  in cpu_map_kthread_run()
274 	while (!kthread_should_stop() || !__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
284 		if (__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
287 			if (__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
302 		n = __ptr_ring_consume_batched(rcpu->queue, frames,  in cpu_map_kthread_run()
327 		nframes = cpu_map_bpf_prog_run(rcpu, frames, xdp_n, &stats, &list);  in cpu_map_kthread_run()
354 		trace_xdp_cpumap_kthread(rcpu->map_id, n, kmem_alloc_drops,  in cpu_map_kthread_run()
364 static int __cpu_map_load_bpf_program(struct bpf_cpu_map_entry *rcpu,  in __cpu_map_load_bpf_program()  argument
379 	rcpu->value.bpf_prog.id = prog->aux->id;  in __cpu_map_load_bpf_program()
380 	rcpu->prog = prog;  in __cpu_map_load_bpf_program()
391 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_entry_alloc()  local
397 	rcpu = bpf_map_kmalloc_node(map, sizeof(*rcpu), gfp | __GFP_ZERO, numa);  in __cpu_map_entry_alloc()
398 	if (!rcpu)  in __cpu_map_entry_alloc()
402 	rcpu->bulkq = bpf_map_alloc_percpu(map, sizeof(*rcpu->bulkq),  in __cpu_map_entry_alloc()
404 	if (!rcpu->bulkq)  in __cpu_map_entry_alloc()
408 		bq = per_cpu_ptr(rcpu->bulkq, i);  in __cpu_map_entry_alloc()
409 		bq->obj = rcpu;  in __cpu_map_entry_alloc()
413 	rcpu->queue = bpf_map_kmalloc_node(map, sizeof(*rcpu->queue), gfp,  in __cpu_map_entry_alloc()
415 	if (!rcpu->queue)  in __cpu_map_entry_alloc()
418 	err = ptr_ring_init(rcpu->queue, value->qsize, gfp);  in __cpu_map_entry_alloc()
422 	rcpu->cpu    = cpu;  in __cpu_map_entry_alloc()
423 	rcpu->map_id = map->id;  in __cpu_map_entry_alloc()
424 	rcpu->value.qsize  = value->qsize;  in __cpu_map_entry_alloc()
426 	if (fd > 0 && __cpu_map_load_bpf_program(rcpu, map, fd))  in __cpu_map_entry_alloc()
430 	init_completion(&rcpu->kthread_running);  in __cpu_map_entry_alloc()
431 	rcpu->kthread = kthread_create_on_node(cpu_map_kthread_run, rcpu, numa,  in __cpu_map_entry_alloc()
434 	if (IS_ERR(rcpu->kthread))  in __cpu_map_entry_alloc()
438 	kthread_bind(rcpu->kthread, cpu);  in __cpu_map_entry_alloc()
439 	wake_up_process(rcpu->kthread);  in __cpu_map_entry_alloc()
445 	wait_for_completion(&rcpu->kthread_running);  in __cpu_map_entry_alloc()
447 	return rcpu;  in __cpu_map_entry_alloc()
450 	if (rcpu->prog)  in __cpu_map_entry_alloc()
451 		bpf_prog_put(rcpu->prog);  in __cpu_map_entry_alloc()
453 	ptr_ring_cleanup(rcpu->queue, NULL);  in __cpu_map_entry_alloc()
455 	kfree(rcpu->queue);  in __cpu_map_entry_alloc()
457 	free_percpu(rcpu->bulkq);  in __cpu_map_entry_alloc()
459 	kfree(rcpu);  in __cpu_map_entry_alloc()
465 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_entry_free()  local
472 	rcpu = container_of(to_rcu_work(work), struct bpf_cpu_map_entry, free_work);  in __cpu_map_entry_free()
478 	kthread_stop(rcpu->kthread);  in __cpu_map_entry_free()
480 	if (rcpu->prog)  in __cpu_map_entry_free()
481 		bpf_prog_put(rcpu->prog);  in __cpu_map_entry_free()
483 	__cpu_map_ring_cleanup(rcpu->queue);  in __cpu_map_entry_free()
484 	ptr_ring_cleanup(rcpu->queue, NULL);  in __cpu_map_entry_free()
485 	kfree(rcpu->queue);  in __cpu_map_entry_free()
486 	free_percpu(rcpu->bulkq);  in __cpu_map_entry_free()
487 	kfree(rcpu);  in __cpu_map_entry_free()
499 				    u32 key_cpu, struct bpf_cpu_map_entry *rcpu)  in __cpu_map_entry_replace()  argument
503 	old_rcpu = unrcu_pointer(xchg(&cmap->cpu_map[key_cpu], RCU_INITIALIZER(rcpu)));  in __cpu_map_entry_replace()
528 	struct bpf_cpu_map_entry *rcpu;  in cpu_map_update_elem()  local
548 		rcpu = NULL; /* Same as deleting */  in cpu_map_update_elem()
551 		rcpu = __cpu_map_entry_alloc(map, &cpumap_value, key_cpu);  in cpu_map_update_elem()
552 		if (!rcpu)  in cpu_map_update_elem()
556 	__cpu_map_entry_replace(cmap, key_cpu, rcpu);  in cpu_map_update_elem()
580 		struct bpf_cpu_map_entry *rcpu;  in cpu_map_free()  local
582 		rcpu = rcu_dereference_raw(cmap->cpu_map[i]);  in cpu_map_free()
583 		if (!rcpu)  in cpu_map_free()
587 		__cpu_map_entry_free(&rcpu->free_work.work);  in cpu_map_free()
600 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_lookup_elem()  local
605 	rcpu = rcu_dereference_check(cmap->cpu_map[key],  in __cpu_map_lookup_elem()
607 	return rcpu;  in __cpu_map_lookup_elem()
612 	struct bpf_cpu_map_entry *rcpu =  in cpu_map_lookup_elem()  local
615 	return rcpu ? &rcpu->value : NULL;  in cpu_map_lookup_elem()
667 	struct bpf_cpu_map_entry *rcpu = bq->obj;  in bq_flush_to_queue()  local
669 	const int to_cpu = rcpu->cpu;  in bq_flush_to_queue()
676 	q = rcpu->queue;  in bq_flush_to_queue()
696 	trace_xdp_cpumap_enqueue(rcpu->map_id, processed, drops, to_cpu);  in bq_flush_to_queue()
702 static void bq_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf)  in bq_enqueue()  argument
705 	struct xdp_bulk_queue *bq = this_cpu_ptr(rcpu->bulkq);  in bq_enqueue()
725 int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf,  in cpu_map_enqueue()  argument
731 	bq_enqueue(rcpu, xdpf);  in cpu_map_enqueue()
735 int cpu_map_generic_redirect(struct bpf_cpu_map_entry *rcpu,  in cpu_map_generic_redirect()  argument
744 	ret = ptr_ring_produce(rcpu->queue, skb);  in cpu_map_generic_redirect()
748 	wake_up_process(rcpu->kthread);  in cpu_map_generic_redirect()
750 	trace_xdp_cpumap_enqueue(rcpu->map_id, !ret, !!ret, rcpu->cpu);  in cpu_map_generic_redirect()