Lines Matching refs:can_id
316 * @can_id: 29 bit CAN identifier
326 static unsigned int effhash(canid_t can_id)
330 hash = can_id;
331 hash ^= can_id >> CAN_EFF_RCV_HASH_BITS;
332 hash ^= can_id >> (2 * CAN_EFF_RCV_HASH_BITS);
339 * @can_id: pointer to CAN identifier of a given can_filter
350 * <received_can_id> & mask == can_id & mask
355 * The filter can be inverted (CAN_INV_FILTER bit set in can_id) or it can
360 * Pointer to optimal filterlist for the given can_id/mask pair.
362 * Reduced can_id to have a preprocessed filter compare value.
364 static struct hlist_head *can_rcv_list_find(canid_t *can_id, canid_t *mask,
367 canid_t inv = *can_id & CAN_INV_FILTER; /* save flag before masking */
381 if ((*mask & CAN_EFF_FLAG) && !(*can_id & CAN_EFF_FLAG))
385 *can_id &= *mask;
387 /* inverse can_id/can_mask filter */
395 /* extra filterlists for the subscription of a single non-RTR can_id */
397 !(*can_id & CAN_RTR_FLAG)) {
398 if (*can_id & CAN_EFF_FLAG) {
400 return &dev_rcv_lists->rx_eff[effhash(*can_id)];
403 return &dev_rcv_lists->rx_sff[*can_id];
407 /* default: filter via can_id/can_mask */
415 * @can_id: CAN identifier (see description)
426 * <received_can_id> & mask == can_id & mask
428 * The filter can be inverted (CAN_INV_FILTER bit set in can_id) or it can
442 int can_rx_register(struct net *net, struct net_device *dev, canid_t can_id,
467 rcv_list = can_rcv_list_find(&can_id, &mask, dev_rcv_lists);
469 rcv->can_id = can_id;
504 * @can_id: CAN identifier
512 void can_rx_unregister(struct net *net, struct net_device *dev, canid_t can_id,
530 rcv_list = can_rcv_list_find(&can_id, &mask, dev_rcv_lists);
537 if (rcv->can_id == can_id && rcv->mask == mask &&
550 DNAME(dev), can_id, mask);
583 canid_t can_id = cf->can_id;
588 if (can_id & CAN_ERR_FLAG) {
591 if (can_id & rcv->mask) {
605 /* check for can_id/mask entries */
607 if ((can_id & rcv->mask) == rcv->can_id) {
613 /* check for inverted can_id/mask entries */
615 if ((can_id & rcv->mask) != rcv->can_id) {
622 if (can_id & CAN_RTR_FLAG)
625 if (can_id & CAN_EFF_FLAG) {
626 hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx_eff[effhash(can_id)], list) {
627 if (rcv->can_id == can_id) {
633 can_id &= CAN_SFF_MASK;
634 hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx_sff[can_id], list) {