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sfc: add start and stop methods to channels

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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: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2022-11-14 13:15:52 +00:00 committed by David S. Miller
parent e395153984
commit 85697f97fd
2 changed files with 12 additions and 1 deletions
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9
drivers/net/ethernet/sfc/efx_channels.c
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@ -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;
}

4
drivers/net/ethernet/sfc/net_driver.h
View File

@ -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 *);