142 static void get_cpu_map_entry(struct bpf_cpu_map_entry *rcpu)  in get_cpu_map_entry()  argument
144 	atomic_inc(&rcpu->refcnt);  in get_cpu_map_entry()
150 	struct bpf_cpu_map_entry *rcpu;  in cpu_map_kthread_stop()  local
152 	rcpu = container_of(work, struct bpf_cpu_map_entry, kthread_stop_wq);  in cpu_map_kthread_stop()
160 	kthread_stop(rcpu->kthread);  in cpu_map_kthread_stop()
163 static struct sk_buff *cpu_map_build_skb(struct bpf_cpu_map_entry *rcpu,  in cpu_map_build_skb()  argument
236 static void put_cpu_map_entry(struct bpf_cpu_map_entry *rcpu)  in put_cpu_map_entry()  argument
238 	if (atomic_dec_and_test(&rcpu->refcnt)) {  in put_cpu_map_entry()
240 		__cpu_map_ring_cleanup(rcpu->queue);  in put_cpu_map_entry()
241 		ptr_ring_cleanup(rcpu->queue, NULL);  in put_cpu_map_entry()
242 		kfree(rcpu->queue);  in put_cpu_map_entry()
243 		kfree(rcpu);  in put_cpu_map_entry()
251 	struct bpf_cpu_map_entry *rcpu = data;  in cpu_map_kthread_run()  local
260 	while (!kthread_should_stop() || !__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
268 		if (__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
271 			if (__ptr_ring_empty(rcpu->queue)) {  in cpu_map_kthread_run()
286 		n = ptr_ring_consume_batched(rcpu->queue, frames, CPUMAP_BATCH);  in cpu_map_kthread_run()
312 			skb = cpu_map_build_skb(rcpu, xdpf, skb);  in cpu_map_kthread_run()
324 		trace_xdp_cpumap_kthread(rcpu->map_id, n, drops, sched);  in cpu_map_kthread_run()
330 	put_cpu_map_entry(rcpu);  in cpu_map_kthread_run()
338 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_entry_alloc()  local
345 	rcpu = kzalloc_node(sizeof(*rcpu), gfp, numa);  in __cpu_map_entry_alloc()
346 	if (!rcpu)  in __cpu_map_entry_alloc()
350 	rcpu->bulkq = __alloc_percpu_gfp(sizeof(*rcpu->bulkq),  in __cpu_map_entry_alloc()
352 	if (!rcpu->bulkq)  in __cpu_map_entry_alloc()
356 		bq = per_cpu_ptr(rcpu->bulkq, i);  in __cpu_map_entry_alloc()
357 		bq->obj = rcpu;  in __cpu_map_entry_alloc()
361 	rcpu->queue = kzalloc_node(sizeof(*rcpu->queue), gfp, numa);  in __cpu_map_entry_alloc()
362 	if (!rcpu->queue)  in __cpu_map_entry_alloc()
365 	err = ptr_ring_init(rcpu->queue, qsize, gfp);  in __cpu_map_entry_alloc()
369 	rcpu->cpu    = cpu;  in __cpu_map_entry_alloc()
370 	rcpu->map_id = map_id;  in __cpu_map_entry_alloc()
371 	rcpu->qsize  = qsize;  in __cpu_map_entry_alloc()
374 	rcpu->kthread = kthread_create_on_node(cpu_map_kthread_run, rcpu, numa,  in __cpu_map_entry_alloc()
376 	if (IS_ERR(rcpu->kthread))  in __cpu_map_entry_alloc()
379 	get_cpu_map_entry(rcpu); /* 1-refcnt for being in cmap->cpu_map[] */  in __cpu_map_entry_alloc()
380 	get_cpu_map_entry(rcpu); /* 1-refcnt for kthread */  in __cpu_map_entry_alloc()
383 	kthread_bind(rcpu->kthread, cpu);  in __cpu_map_entry_alloc()
384 	wake_up_process(rcpu->kthread);  in __cpu_map_entry_alloc()
386 	return rcpu;  in __cpu_map_entry_alloc()
389 	ptr_ring_cleanup(rcpu->queue, NULL);  in __cpu_map_entry_alloc()
391 	kfree(rcpu->queue);  in __cpu_map_entry_alloc()
393 	free_percpu(rcpu->bulkq);  in __cpu_map_entry_alloc()
395 	kfree(rcpu);  in __cpu_map_entry_alloc()
401 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_entry_free()  local
409 	rcpu = container_of(rcu, struct bpf_cpu_map_entry, rcu);  in __cpu_map_entry_free()
413 		struct xdp_bulk_queue *bq = per_cpu_ptr(rcpu->bulkq, cpu);  in __cpu_map_entry_free()
418 	free_percpu(rcpu->bulkq);  in __cpu_map_entry_free()
420 	put_cpu_map_entry(rcpu);  in __cpu_map_entry_free()
443 				    u32 key_cpu, struct bpf_cpu_map_entry *rcpu)  in __cpu_map_entry_replace()  argument
447 	old_rcpu = xchg(&cmap->cpu_map[key_cpu], rcpu);  in __cpu_map_entry_replace()
472 	struct bpf_cpu_map_entry *rcpu;  in cpu_map_update_elem()  local
493 		rcpu = NULL; /* Same as deleting */  in cpu_map_update_elem()
496 		rcpu = __cpu_map_entry_alloc(qsize, key_cpu, map->id);  in cpu_map_update_elem()
497 		if (!rcpu)  in cpu_map_update_elem()
499 		rcpu->cmap = cmap;  in cpu_map_update_elem()
502 	__cpu_map_entry_replace(cmap, key_cpu, rcpu);  in cpu_map_update_elem()
541 		struct bpf_cpu_map_entry *rcpu;  in cpu_map_free()  local
543 		rcpu = READ_ONCE(cmap->cpu_map[i]);  in cpu_map_free()
544 		if (!rcpu)  in cpu_map_free()
558 	struct bpf_cpu_map_entry *rcpu;  in __cpu_map_lookup_elem()  local
563 	rcpu = READ_ONCE(cmap->cpu_map[key]);  in __cpu_map_lookup_elem()
564 	return rcpu;  in __cpu_map_lookup_elem()
569 	struct bpf_cpu_map_entry *rcpu =  in cpu_map_lookup_elem()  local
572 	return rcpu ? &rcpu->qsize : NULL;  in cpu_map_lookup_elem()
604 	struct bpf_cpu_map_entry *rcpu = bq->obj;  in bq_flush_to_queue()  local
606 	const int to_cpu = rcpu->cpu;  in bq_flush_to_queue()
613 	q = rcpu->queue;  in bq_flush_to_queue()
636 	trace_xdp_cpumap_enqueue(rcpu->map_id, processed, drops, to_cpu);  in bq_flush_to_queue()
643 static int bq_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf)  in bq_enqueue()  argument
645 	struct list_head *flush_list = this_cpu_ptr(rcpu->cmap->flush_list);  in bq_enqueue()
646 	struct xdp_bulk_queue *bq = this_cpu_ptr(rcpu->bulkq);  in bq_enqueue()
668 int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_buff *xdp,  in cpu_map_enqueue()  argument
680 	bq_enqueue(rcpu, xdpf);  in cpu_map_enqueue()