Lines Matching refs:file
171 static int hdr_size(struct ib_umad_file *file) in hdr_size() argument
173 return file->use_pkey_index ? sizeof(struct ib_user_mad_hdr) : in hdr_size()
178 static struct ib_mad_agent *__get_agent(struct ib_umad_file *file, int id) in __get_agent() argument
180 return file->agents_dead ? NULL : file->agent[id]; in __get_agent()
183 static int queue_packet(struct ib_umad_file *file, in queue_packet() argument
189 mutex_lock(&file->mutex); in queue_packet()
194 if (agent == __get_agent(file, packet->mad.hdr.id)) { in queue_packet()
195 list_add_tail(&packet->list, &file->recv_list); in queue_packet()
196 wake_up_interruptible(&file->recv_wait); in queue_packet()
201 mutex_unlock(&file->mutex); in queue_packet()
206 static void dequeue_send(struct ib_umad_file *file, in dequeue_send() argument
209 spin_lock_irq(&file->send_lock); in dequeue_send()
211 spin_unlock_irq(&file->send_lock); in dequeue_send()
217 struct ib_umad_file *file = agent->context; in send_handler() local
220 dequeue_send(file, packet); in send_handler()
227 if (!queue_packet(file, agent, packet)) in send_handler()
237 struct ib_umad_file *file = agent->context; in recv_handler() local
251 packet->mad.hdr.length = hdr_size(file) + mad_recv_wc->mad_len; in recv_handler()
287 if (queue_packet(file, agent, packet)) in recv_handler()
297 static ssize_t copy_recv_mad(struct ib_umad_file *file, char __user *buf, in copy_recv_mad() argument
309 count < hdr_size(file) + packet->length) || in copy_recv_mad()
311 count < hdr_size(file) + seg_size)) in copy_recv_mad()
314 if (copy_to_user(buf, &packet->mad, hdr_size(file))) in copy_recv_mad()
317 buf += hdr_size(file); in copy_recv_mad()
327 if (count < hdr_size(file) + packet->length) { in copy_recv_mad()
348 trace_ib_umad_read_recv(file, &packet->mad.hdr, &recv_buf->mad->mad_hdr); in copy_recv_mad()
350 return hdr_size(file) + packet->length; in copy_recv_mad()
353 static ssize_t copy_send_mad(struct ib_umad_file *file, char __user *buf, in copy_send_mad() argument
356 ssize_t size = hdr_size(file) + packet->length; in copy_send_mad()
361 if (copy_to_user(buf, &packet->mad, hdr_size(file))) in copy_send_mad()
364 buf += hdr_size(file); in copy_send_mad()
369 trace_ib_umad_read_send(file, &packet->mad.hdr, in copy_send_mad()
375 static ssize_t ib_umad_read(struct file *filp, char __user *buf, in ib_umad_read()
378 struct ib_umad_file *file = filp->private_data; in ib_umad_read() local
382 if (count < hdr_size(file)) in ib_umad_read()
385 mutex_lock(&file->mutex); in ib_umad_read()
387 if (file->agents_dead) { in ib_umad_read()
388 mutex_unlock(&file->mutex); in ib_umad_read()
392 while (list_empty(&file->recv_list)) { in ib_umad_read()
393 mutex_unlock(&file->mutex); in ib_umad_read()
398 if (wait_event_interruptible(file->recv_wait, in ib_umad_read()
399 !list_empty(&file->recv_list))) in ib_umad_read()
402 mutex_lock(&file->mutex); in ib_umad_read()
405 if (file->agents_dead) { in ib_umad_read()
406 mutex_unlock(&file->mutex); in ib_umad_read()
410 packet = list_entry(file->recv_list.next, struct ib_umad_packet, list); in ib_umad_read()
413 mutex_unlock(&file->mutex); in ib_umad_read()
416 ret = copy_recv_mad(file, buf, packet, count); in ib_umad_read()
418 ret = copy_send_mad(file, buf, packet, count); in ib_umad_read()
422 mutex_lock(&file->mutex); in ib_umad_read()
423 list_add(&packet->list, &file->recv_list); in ib_umad_read()
424 mutex_unlock(&file->mutex); in ib_umad_read()
465 static int is_duplicate(struct ib_umad_file *file, in is_duplicate() argument
472 list_for_each_entry(sent_packet, &file->send_list, list) { in is_duplicate()
498 static ssize_t ib_umad_write(struct file *filp, const char __user *buf, in ib_umad_write()
501 struct ib_umad_file *file = filp->private_data; in ib_umad_write() local
511 if (count < hdr_size(file) + IB_MGMT_RMPP_HDR) in ib_umad_write()
518 if (copy_from_user(&packet->mad, buf, hdr_size(file))) { in ib_umad_write()
528 buf += hdr_size(file); in ib_umad_write()
535 mutex_lock(&file->mutex); in ib_umad_write()
537 trace_ib_umad_write(file, &packet->mad.hdr, in ib_umad_write()
540 agent = __get_agent(file, packet->mad.hdr.id); in ib_umad_write()
548 file->port->port_num); in ib_umad_write()
552 rdma_ah_set_port_num(&ah_attr, file->port->port_num); in ib_umad_write()
582 data_len = count - hdr_size(file) - hdr_len; in ib_umad_write()
629 spin_lock_irq(&file->send_lock); in ib_umad_write()
630 list_add_tail(&packet->list, &file->send_list); in ib_umad_write()
631 spin_unlock_irq(&file->send_lock); in ib_umad_write()
633 spin_lock_irq(&file->send_lock); in ib_umad_write()
634 ret = is_duplicate(file, packet); in ib_umad_write()
636 list_add_tail(&packet->list, &file->send_list); in ib_umad_write()
637 spin_unlock_irq(&file->send_lock); in ib_umad_write()
648 mutex_unlock(&file->mutex); in ib_umad_write()
652 dequeue_send(file, packet); in ib_umad_write()
658 mutex_unlock(&file->mutex); in ib_umad_write()
664 static __poll_t ib_umad_poll(struct file *filp, struct poll_table_struct *wait) in ib_umad_poll()
666 struct ib_umad_file *file = filp->private_data; in ib_umad_poll() local
671 mutex_lock(&file->mutex); in ib_umad_poll()
672 poll_wait(filp, &file->recv_wait, wait); in ib_umad_poll()
674 if (!list_empty(&file->recv_list)) in ib_umad_poll()
676 if (file->agents_dead) in ib_umad_poll()
678 mutex_unlock(&file->mutex); in ib_umad_poll()
683 static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg, in ib_umad_reg_agent() argument
692 mutex_lock(&file->port->file_mutex); in ib_umad_reg_agent()
693 mutex_lock(&file->mutex); in ib_umad_reg_agent()
695 if (!file->port->ib_dev) { in ib_umad_reg_agent()
696 dev_notice(&file->port->dev, "%s: invalid device\n", __func__); in ib_umad_reg_agent()
707 dev_notice(&file->port->dev, in ib_umad_reg_agent()
715 if (!__get_agent(file, agent_id)) in ib_umad_reg_agent()
718 dev_notice(&file->port->dev, "%s: Max Agents (%u) reached\n", __func__, in ib_umad_reg_agent()
743 agent = ib_register_mad_agent(file->port->ib_dev, file->port->port_num, in ib_umad_reg_agent()
747 send_handler, recv_handler, file, 0); in ib_umad_reg_agent()
760 if (!file->already_used) { in ib_umad_reg_agent()
761 file->already_used = 1; in ib_umad_reg_agent()
762 if (!file->use_pkey_index) { in ib_umad_reg_agent()
763 dev_warn(&file->port->dev, in ib_umad_reg_agent()
766 dev_warn(&file->port->dev, in ib_umad_reg_agent()
771 file->agent[agent_id] = agent; in ib_umad_reg_agent()
775 mutex_unlock(&file->mutex); in ib_umad_reg_agent()
780 mutex_unlock(&file->port->file_mutex); in ib_umad_reg_agent()
785 static int ib_umad_reg_agent2(struct ib_umad_file *file, void __user *arg) in ib_umad_reg_agent2() argument
793 mutex_lock(&file->port->file_mutex); in ib_umad_reg_agent2()
794 mutex_lock(&file->mutex); in ib_umad_reg_agent2()
796 if (!file->port->ib_dev) { in ib_umad_reg_agent2()
797 dev_notice(&file->port->dev, "%s: invalid device\n", __func__); in ib_umad_reg_agent2()
808 dev_notice(&file->port->dev, "%s: invalid QPN %u specified\n", in ib_umad_reg_agent2()
815 dev_notice(&file->port->dev, in ib_umad_reg_agent2()
829 if (!__get_agent(file, agent_id)) in ib_umad_reg_agent2()
832 dev_notice(&file->port->dev, "%s: Max Agents (%u) reached\n", __func__, in ib_umad_reg_agent2()
843 dev_notice(&file->port->dev, in ib_umad_reg_agent2()
856 agent = ib_register_mad_agent(file->port->ib_dev, file->port->port_num, in ib_umad_reg_agent2()
860 send_handler, recv_handler, file, in ib_umad_reg_agent2()
875 if (!file->already_used) { in ib_umad_reg_agent2()
876 file->already_used = 1; in ib_umad_reg_agent2()
877 file->use_pkey_index = 1; in ib_umad_reg_agent2()
880 file->agent[agent_id] = agent; in ib_umad_reg_agent2()
884 mutex_unlock(&file->mutex); in ib_umad_reg_agent2()
889 mutex_unlock(&file->port->file_mutex); in ib_umad_reg_agent2()
895 static int ib_umad_unreg_agent(struct ib_umad_file *file, u32 __user *arg) in ib_umad_unreg_agent() argument
906 mutex_lock(&file->port->file_mutex); in ib_umad_unreg_agent()
907 mutex_lock(&file->mutex); in ib_umad_unreg_agent()
910 if (!__get_agent(file, id)) { in ib_umad_unreg_agent()
915 agent = file->agent[id]; in ib_umad_unreg_agent()
916 file->agent[id] = NULL; in ib_umad_unreg_agent()
919 mutex_unlock(&file->mutex); in ib_umad_unreg_agent()
924 mutex_unlock(&file->port->file_mutex); in ib_umad_unreg_agent()
929 static long ib_umad_enable_pkey(struct ib_umad_file *file) in ib_umad_enable_pkey() argument
933 mutex_lock(&file->mutex); in ib_umad_enable_pkey()
934 if (file->already_used) in ib_umad_enable_pkey()
937 file->use_pkey_index = 1; in ib_umad_enable_pkey()
938 mutex_unlock(&file->mutex); in ib_umad_enable_pkey()
943 static long ib_umad_ioctl(struct file *filp, unsigned int cmd, in ib_umad_ioctl()
961 static long ib_umad_compat_ioctl(struct file *filp, unsigned int cmd, in ib_umad_compat_ioctl()
988 static int ib_umad_open(struct inode *inode, struct file *filp) in ib_umad_open()
991 struct ib_umad_file *file; in ib_umad_open() local
1008 file = kzalloc(sizeof(*file), GFP_KERNEL); in ib_umad_open()
1009 if (!file) { in ib_umad_open()
1014 mutex_init(&file->mutex); in ib_umad_open()
1015 spin_lock_init(&file->send_lock); in ib_umad_open()
1016 INIT_LIST_HEAD(&file->recv_list); in ib_umad_open()
1017 INIT_LIST_HEAD(&file->send_list); in ib_umad_open()
1018 init_waitqueue_head(&file->recv_wait); in ib_umad_open()
1020 file->port = port; in ib_umad_open()
1021 filp->private_data = file; in ib_umad_open()
1023 list_add_tail(&file->port_list, &port->file_list); in ib_umad_open()
1031 static int ib_umad_close(struct inode *inode, struct file *filp) in ib_umad_close()
1033 struct ib_umad_file *file = filp->private_data; in ib_umad_close() local
1038 mutex_lock(&file->port->file_mutex); in ib_umad_close()
1039 mutex_lock(&file->mutex); in ib_umad_close()
1041 already_dead = file->agents_dead; in ib_umad_close()
1042 file->agents_dead = 1; in ib_umad_close()
1044 list_for_each_entry_safe(packet, tmp, &file->recv_list, list) { in ib_umad_close()
1050 list_del(&file->port_list); in ib_umad_close()
1052 mutex_unlock(&file->mutex); in ib_umad_close()
1056 if (file->agent[i]) in ib_umad_close()
1057 ib_unregister_mad_agent(file->agent[i]); in ib_umad_close()
1059 mutex_unlock(&file->port->file_mutex); in ib_umad_close()
1060 mutex_destroy(&file->mutex); in ib_umad_close()
1061 kfree(file); in ib_umad_close()
1079 static int ib_umad_sm_open(struct inode *inode, struct file *filp) in ib_umad_sm_open()
1122 static int ib_umad_sm_close(struct inode *inode, struct file *filp) in ib_umad_sm_close()
1338 struct ib_umad_file *file; in ib_umad_kill_port() local
1351 list_for_each_entry(file, &port->file_list, port_list) { in ib_umad_kill_port()
1352 mutex_lock(&file->mutex); in ib_umad_kill_port()
1353 file->agents_dead = 1; in ib_umad_kill_port()
1354 wake_up_interruptible(&file->recv_wait); in ib_umad_kill_port()
1355 mutex_unlock(&file->mutex); in ib_umad_kill_port()
1358 if (file->agent[id]) in ib_umad_kill_port()
1359 ib_unregister_mad_agent(file->agent[id]); in ib_umad_kill_port()