| commit | 24bc41b4558347672a3db61009c339b1f5692169 | [log] [tgz] |
|---|---|---|
| author | Marc Kleine-Budde <mkl@pengutronix.de> | Fri Jun 02 09:29:07 2023 +0200 |
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | Fri Jul 28 09:45:25 2023 +0200 |
| tree | 7570ccd9412a428d8c477b9c761c62701f6e91b7 | |
| parent | 8e0e2950c9ef48f7f40a7175048744ec2390b16e [diff] |
can: gs_usb: convert to NAPI/rx-offload to avoid OoO reception The driver used to pass received CAN frames/skbs to the network stack with netif_rx(). In netif_rx() the skbs are queued to the local CPU. If IRQs are handled in round robin, OoO packets may occur. To avoid out-of-order reception convert the driver from netif_rx() to NAPI. For USB devices with timestamping support use the rx-offload helper can_rx_offload_queue_timestamp() for the RX, and can_rx_offload_get_echo_skb_queue_timestamp() for the TX path. Devices without timestamping support use can_rx_offload_queue_tail() for RX, and can_rx_offload_get_echo_skb_queue_tail() for the TX path. Link: https://lore.kernel.org/all/559D628C.5020100@hartkopp.net Link: https://github.com/candle-usb/candleLight_fw/issues/166 Link: https://lore.kernel.org/all/20230718-gs_usb-rx-offload-v2-3-716e542d14d5@pengutronix.de Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>