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
267 	complete(&rcpu->kthread_running);  in cpu_map_kthread_run()
275 	while (!kthread_should_stop() || !__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
285 		if (__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
288 			if (__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
305 		n = __ptr_ring_consume_batched(rcpu->queue, frames,  in cpu_map_kthread_run()
330 		nframes = cpu_map_bpf_prog_run(rcpu, frames, xdp_n, &stats, &list);  in cpu_map_kthread_run()
357 		trace_xdp_cpumap_kthread(rcpu->map_id, n, kmem_alloc_drops,  in cpu_map_kthread_run()
367 static int __cpu_map_load_bpf_program(struct bpf_cpu_map_entry *rcpu,  in __cpu_map_load_bpf_program()  argument
382 	rcpu->value.bpf_prog.id = prog->aux->id;  in __cpu_map_load_bpf_program()
383 	rcpu->prog = prog;  in __cpu_map_load_bpf_program()
394 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_entry_alloc()  local
400 	rcpu = bpf_map_kmalloc_node(map, sizeof(*rcpu), gfp | __GFP_ZERO, numa);  in __cpu_map_entry_alloc()
401 	if (!rcpu)  in __cpu_map_entry_alloc()
405 	rcpu->bulkq = bpf_map_alloc_percpu(map, sizeof(*rcpu->bulkq),  in __cpu_map_entry_alloc()
407 	if (!rcpu->bulkq)  in __cpu_map_entry_alloc()
411 		bq = per_cpu_ptr(rcpu->bulkq, i);  in __cpu_map_entry_alloc()
412 		bq->obj = rcpu;  in __cpu_map_entry_alloc()
416 	rcpu->queue = bpf_map_kmalloc_node(map, sizeof(*rcpu->queue), gfp,  in __cpu_map_entry_alloc()
418 	if (!rcpu->queue)  in __cpu_map_entry_alloc()
421 	err = ptr_ring_init(rcpu->queue, value->qsize, gfp);  in __cpu_map_entry_alloc()
425 	rcpu->cpu    = cpu;  in __cpu_map_entry_alloc()
426 	rcpu->map_id = map->id;  in __cpu_map_entry_alloc()
427 	rcpu->value.qsize  = value->qsize;  in __cpu_map_entry_alloc()
429 	if (fd > 0 && __cpu_map_load_bpf_program(rcpu, map, fd))  in __cpu_map_entry_alloc()
433 	init_completion(&rcpu->kthread_running);  in __cpu_map_entry_alloc()
434 	rcpu->kthread = kthread_create_on_node(cpu_map_kthread_run, rcpu, numa,  in __cpu_map_entry_alloc()
437 	if (IS_ERR(rcpu->kthread))  in __cpu_map_entry_alloc()
441 	kthread_bind(rcpu->kthread, cpu);  in __cpu_map_entry_alloc()
442 	wake_up_process(rcpu->kthread);  in __cpu_map_entry_alloc()
448 	wait_for_completion(&rcpu->kthread_running);  in __cpu_map_entry_alloc()
450 	return rcpu;  in __cpu_map_entry_alloc()
453 	if (rcpu->prog)  in __cpu_map_entry_alloc()
454 		bpf_prog_put(rcpu->prog);  in __cpu_map_entry_alloc()
456 	ptr_ring_cleanup(rcpu->queue, NULL);  in __cpu_map_entry_alloc()
458 	kfree(rcpu->queue);  in __cpu_map_entry_alloc()
460 	free_percpu(rcpu->bulkq);  in __cpu_map_entry_alloc()
462 	kfree(rcpu);  in __cpu_map_entry_alloc()
468 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_entry_free()  local
475 	rcpu = container_of(to_rcu_work(work), struct bpf_cpu_map_entry, free_work);  in __cpu_map_entry_free()
481 	kthread_stop(rcpu->kthread);  in __cpu_map_entry_free()
483 	if (rcpu->prog)  in __cpu_map_entry_free()
484 		bpf_prog_put(rcpu->prog);  in __cpu_map_entry_free()
486 	__cpu_map_ring_cleanup(rcpu->queue);  in __cpu_map_entry_free()
487 	ptr_ring_cleanup(rcpu->queue, NULL);  in __cpu_map_entry_free()
488 	kfree(rcpu->queue);  in __cpu_map_entry_free()
489 	free_percpu(rcpu->bulkq);  in __cpu_map_entry_free()
490 	kfree(rcpu);  in __cpu_map_entry_free()
502 				    u32 key_cpu, struct bpf_cpu_map_entry *rcpu)  in __cpu_map_entry_replace()  argument
506 	old_rcpu = unrcu_pointer(xchg(&cmap->cpu_map[key_cpu], RCU_INITIALIZER(rcpu)));  in __cpu_map_entry_replace()
531 	struct bpf_cpu_map_entry *rcpu;  in cpu_map_update_elem()  local
551 		rcpu = NULL; /* Same as deleting */  in cpu_map_update_elem()
554 		rcpu = __cpu_map_entry_alloc(map, &cpumap_value, key_cpu);  in cpu_map_update_elem()
555 		if (!rcpu)  in cpu_map_update_elem()
559 	__cpu_map_entry_replace(cmap, key_cpu, rcpu);  in cpu_map_update_elem()
583 		struct bpf_cpu_map_entry *rcpu;  in cpu_map_free()  local
585 		rcpu = rcu_dereference_raw(cmap->cpu_map[i]);  in cpu_map_free()
586 		if (!rcpu)  in cpu_map_free()
590 		__cpu_map_entry_free(&rcpu->free_work.work);  in cpu_map_free()
603 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_lookup_elem()  local
608 	rcpu = rcu_dereference_check(cmap->cpu_map[key],  in __cpu_map_lookup_elem()
610 	return rcpu;  in __cpu_map_lookup_elem()
615 	struct bpf_cpu_map_entry *rcpu =  in cpu_map_lookup_elem()  local
618 	return rcpu ? &rcpu->value : NULL;  in cpu_map_lookup_elem()
670 	struct bpf_cpu_map_entry *rcpu = bq->obj;  in bq_flush_to_queue()  local
672 	const int to_cpu = rcpu->cpu;  in bq_flush_to_queue()
679 	q = rcpu->queue;  in bq_flush_to_queue()
699 	trace_xdp_cpumap_enqueue(rcpu->map_id, processed, drops, to_cpu);  in bq_flush_to_queue()
705 static void bq_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf)  in bq_enqueue()  argument
708 	struct xdp_bulk_queue *bq = this_cpu_ptr(rcpu->bulkq);  in bq_enqueue()
728 int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf,  in cpu_map_enqueue()  argument
734 	bq_enqueue(rcpu, xdpf);  in cpu_map_enqueue()
738 int cpu_map_generic_redirect(struct bpf_cpu_map_entry *rcpu,  in cpu_map_generic_redirect()  argument
747 	ret = ptr_ring_produce(rcpu->queue, skb);  in cpu_map_generic_redirect()
751 	wake_up_process(rcpu->kthread);  in cpu_map_generic_redirect()
753 	trace_xdp_cpumap_enqueue(rcpu->map_id, !ret, !!ret, rcpu->cpu);  in cpu_map_generic_redirect()