diff options
| author | Edward Cree <ecree.xilinx@gmail.com> | 2022-11-14 16:15:51 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-11-16 12:07:02 +0300 |
| commit | e395153984871e33624ce5e3f72038de979f5b3e (patch) | |
| tree | e48660e1b87d5cf9c5f0193eba575af22c0daf30 /drivers/net/ethernet/sfc/net_driver.h | |
| parent | 5ae0c22634029da089dc7ce2602679ba9005dc51 (diff) | |
| download | linux-e395153984871e33624ce5e3f72038de979f5b3e.tar.xz | |
sfc: add ability for an RXQ to grant credits on refill
EF100 hardware streams MAE counter updates to the driver over a dedicated
RX queue; however, the MCPU is not able to detect when RX buffers have
been posted to the ring. Thus, the driver must call
MC_CMD_MAE_COUNTERS_STREAM_GIVE_CREDITS; this patch adds the
infrastructure to support that to the core RXQ handling code.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/net_driver.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index 7ef823d7a89a..efb867b6556a 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -363,8 +363,12 @@ struct efx_rx_page_state { * @refill_enabled: Enable refill whenever fill level is low * @flush_pending: Set when a RX flush is pending. Has the same lifetime as * @rxq_flush_pending. + * @grant_credits: Posted RX descriptors need to be granted to the MAE with + * %MC_CMD_MAE_COUNTERS_STREAM_GIVE_CREDITS. For %EFX_EXTRA_CHANNEL_TC, + * and only supported on EF100. * @added_count: Number of buffers added to the receive queue. * @notified_count: Number of buffers given to NIC (<= @added_count). + * @granted_count: Number of buffers granted to the MAE (<= @notified_count). * @removed_count: Number of buffers removed from the receive queue. * @scatter_n: Used by NIC specific receive code. * @scatter_len: Used by NIC specific receive code. @@ -385,6 +389,7 @@ struct efx_rx_page_state { * refill was triggered. * @recycle_count: RX buffer recycle counter. * @slow_fill: Timer used to defer efx_nic_generate_fill_event(). + * @grant_work: workitem used to grant credits to the MAE if @grant_credits * @xdp_rxq_info: XDP specific RX queue information. * @xdp_rxq_info_valid: Is xdp_rxq_info valid data?. */ @@ -396,9 +401,11 @@ struct efx_rx_queue { unsigned int ptr_mask; bool refill_enabled; bool flush_pending; + bool grant_credits; unsigned int added_count; unsigned int notified_count; + unsigned int granted_count; unsigned int removed_count; unsigned int scatter_n; unsigned int scatter_len; @@ -416,6 +423,7 @@ struct efx_rx_queue { unsigned int recycle_count; struct timer_list slow_fill; unsigned int slow_fill_count; + struct work_struct grant_work; /* Statistics to supplement MAC stats */ unsigned long rx_packets; struct xdp_rxq_info xdp_rxq_info; |