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sfc: Use a global count of active queues instead of pending drains

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On EF10, the firmware will initiate a queue flush in certain
error cases.  We need to accept that flush events might appear
at any time after a queue has been initialised, not just when
we try to flush them.

We can handle Falcon-architecture in just the same way.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Alexandre Rames
2013-06-10 11:03:21 +01:00
committed by Ben Hutchings
parent e8c68c0a09
commit 3881d8ab06
3 changed files with 14 additions and 13 deletions
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4
drivers/net/ethernet/sfc/net_driver.h
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@@ -723,7 +723,7 @@ struct vfdi_status;
* @rps_flow_id: Flow IDs of filters allocated for accelerated RFS,
* indexed by filter ID
* @rps_expire_index: Next index to check for expiry in @rps_flow_id
* @drain_pending: Count of RX and TX queues that haven't been flushed and drained.
* @active_queues: Count of RX and TX queues that haven't been flushed and drained.
* @rxq_flush_pending: Count of number of receive queues that need to be flushed.
* Decremented when the efx_flush_rx_queue() is called.
* @rxq_flush_outstanding: Count of number of RX flushes started but not yet
@@ -864,7 +864,7 @@ struct efx_nic {
unsigned int rps_expire_index;
#endif
atomic_t drain_pending;
atomic_t active_queues;
atomic_t rxq_flush_pending;
atomic_t rxq_flush_outstanding;
wait_queue_head_t flush_wq;