can: rx-offload: can_rx_offload_add_manual(): add new initialization function

This patch adds a new initialization function:
can_rx_offload_add_manual()

It should be used to add support rx-offload to a driver, if the callback
mechanism should not be used. Use e.g. can_rx_offload_queue_sorted() to queue
skbs into rx-offload.

Link: https://lore.kernel.org/r/20200915223527.1417033-33-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/rx-offload.c b/drivers/net/can/rx-offload.c
index e832891..3b18026 100644 (file)
--- a/drivers/net/can/rx-offload.c
+++ b/drivers/net/can/rx-offload.c
@@ -351,6 +351,17 @@ int can_rx_offload_add_fifo(struct net_device *dev,
 }
 EXPORT_SYMBOL_GPL(can_rx_offload_add_fifo);
 
 }
 EXPORT_SYMBOL_GPL(can_rx_offload_add_fifo);
 

+int can_rx_offload_add_manual(struct net_device *dev,
+                             struct can_rx_offload *offload,
+                             unsigned int weight)
+{
+       if (offload->mailbox_read)
+               return -EINVAL;
+
+       return can_rx_offload_init_queue(dev, offload, weight);
+}
+EXPORT_SYMBOL_GPL(can_rx_offload_add_manual);
+

 void can_rx_offload_enable(struct can_rx_offload *offload)
 {
        napi_enable(&offload->napi);
 void can_rx_offload_enable(struct can_rx_offload *offload)
 {
        napi_enable(&offload->napi);

diff --git a/include/linux/can/rx-offload.h b/include/linux/can/rx-offload.h
index 1b78a0c..f1b3808 100644 (file)
--- a/include/linux/can/rx-offload.h
+++ b/include/linux/can/rx-offload.h
@@ -35,6 +35,9 @@ int can_rx_offload_add_timestamp(struct net_device *dev,
 int can_rx_offload_add_fifo(struct net_device *dev,
                            struct can_rx_offload *offload,
                            unsigned int weight);
 int can_rx_offload_add_fifo(struct net_device *dev,
                            struct can_rx_offload *offload,
                            unsigned int weight);

+int can_rx_offload_add_manual(struct net_device *dev,
+                             struct can_rx_offload *offload,
+                             unsigned int weight);

 int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
                                         u64 reg);
 int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
 int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
                                         u64 reg);
 int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);