Lines Matching refs:can_id
315 * @can_id: 29 bit CAN identifier
325 static unsigned int effhash(canid_t can_id)
329 hash = can_id;
330 hash ^= can_id >> CAN_EFF_RCV_HASH_BITS;
331 hash ^= can_id >> (2 * CAN_EFF_RCV_HASH_BITS);
338 * @can_id: pointer to CAN identifier of a given can_filter
349 * <received_can_id> & mask == can_id & mask
354 * The filter can be inverted (CAN_INV_FILTER bit set in can_id) or it can
359 * Pointer to optimal filterlist for the given can_id/mask pair.
361 * Reduced can_id to have a preprocessed filter compare value.
363 static struct hlist_head *can_rcv_list_find(canid_t *can_id, canid_t *mask,
366 canid_t inv = *can_id & CAN_INV_FILTER; /* save flag before masking */
380 if ((*mask & CAN_EFF_FLAG) && !(*can_id & CAN_EFF_FLAG))
384 *can_id &= *mask;
386 /* inverse can_id/can_mask filter */
394 /* extra filterlists for the subscription of a single non-RTR can_id */
396 !(*can_id & CAN_RTR_FLAG)) {
397 if (*can_id & CAN_EFF_FLAG) {
399 return &dev_rcv_lists->rx_eff[effhash(*can_id)];
402 return &dev_rcv_lists->rx_sff[*can_id];
406 /* default: filter via can_id/can_mask */
414 * @can_id: CAN identifier (see description)
425 * <received_can_id> & mask == can_id & mask
427 * The filter can be inverted (CAN_INV_FILTER bit set in can_id) or it can
441 int can_rx_register(struct net *net, struct net_device *dev, canid_t can_id,
465 rcv_list = can_rcv_list_find(&can_id, &mask, dev_rcv_lists);
467 rcv->can_id = can_id;
502 * @can_id: CAN identifier
510 void can_rx_unregister(struct net *net, struct net_device *dev, canid_t can_id,
528 rcv_list = can_rcv_list_find(&can_id, &mask, dev_rcv_lists);
535 if (rcv->can_id == can_id && rcv->mask == mask &&
548 DNAME(dev), can_id, mask);
581 canid_t can_id = cf->can_id;
586 if (can_id & CAN_ERR_FLAG) {
589 if (can_id & rcv->mask) {
603 /* check for can_id/mask entries */
605 if ((can_id & rcv->mask) == rcv->can_id) {
611 /* check for inverted can_id/mask entries */
613 if ((can_id & rcv->mask) != rcv->can_id) {
620 if (can_id & CAN_RTR_FLAG)
623 if (can_id & CAN_EFF_FLAG) {
624 hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx_eff[effhash(can_id)], list) {
625 if (rcv->can_id == can_id) {
631 can_id &= CAN_SFF_MASK;
632 hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx_sff[can_id], list) {