Commit 85697f97 authored by Edward Cree's avatar Edward Cree Committed by David S. Miller
Browse files

sfc: add start and stop methods to channels 



The TC extra channel needs to do extra work in efx_{start,stop}_channels()
 to start/stop MAE counter streaming from the hardware.  Add callbacks for
 it to implement.

Signed-off-by: default avatarEdward Cree <ecree.xilinx@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e3951539

drivers/net/ethernet/sfc/efx_channels.c

+8 −1
Original line number Diff line number Diff line
@@ -1119,6 +1119,8 @@ void efx_start_channels(struct efx_nic *efx) 
	struct efx_channel *channel;



	efx_for_each_channel_rev(channel, efx) {

		if (channel->type->start)

			channel->type->start(channel);

		efx_for_each_channel_tx_queue(tx_queue, channel) {

			efx_init_tx_queue(tx_queue);

			atomic_inc(&efx->active_queues);
@@ -1143,8 +1145,13 @@ void efx_stop_channels(struct efx_nic *efx) 
	struct efx_channel *channel;

	int rc = 0;



	/* Stop RX refill */

	/* Stop special channels and RX refill.

	 * The channel's stop has to be called first, since it might wait

	 * for a sentinel RX to indicate the channel has fully drained.

	 */

	efx_for_each_channel(channel, efx) {

		if (channel->type->stop)

			channel->type->stop(channel);

		efx_for_each_channel_rx_queue(rx_queue, channel)

			rx_queue->refill_enabled = false;

	}

drivers/net/ethernet/sfc/net_driver.h

+4 −0
Original line number Diff line number Diff line
@@ -585,6 +585,8 @@ struct efx_msi_context { 
 * struct efx_channel_type - distinguishes traffic and extra channels

 * @handle_no_channel: Handle failure to allocate an extra channel

 * @pre_probe: Set up extra state prior to initialisation

 * @start: called early in efx_start_channels()

 * @stop: called early in efx_stop_channels()

 * @post_remove: Tear down extra state after finalisation, if allocated.

 *	May be called on channels that have not been probed.

 * @get_name: Generate the channel's name (used for its IRQ handler)
@@ -601,6 +603,8 @@ struct efx_msi_context { 
struct efx_channel_type {

	void (*handle_no_channel)(struct efx_nic *);

	int (*pre_probe)(struct efx_channel *);

	int (*start)(struct efx_channel *);

	void (*stop)(struct efx_channel *);

	void (*post_remove)(struct efx_channel *);

	void (*get_name)(struct efx_channel *, char *buf, size_t len);

	struct efx_channel *(*copy)(const struct efx_channel *);