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Call efx_set_channels() before efx->type->dimension_resources()

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When using the "separate_tx_channels=1" module parameter, the TX queues are
initially numbered starting from the first TX-only channel number (after all the
RX-only channels).  efx_set_channels() renumbers the queues so that they are
indexed from zero.

On EF10, the TX queues need to be relabelled in this way before calling the
dimension_resources NIC type operation, otherwise the TX queue PIO buffers can be
linked to the wrong VIs when using "separate_tx_channels=1".

Added comments to explain UC/WC mappings for PIO buffers

Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Pieczko
2014-04-01 13:10:34 +01:00
committed by David S. Miller
parent e9d8b2c296
commit 52ad762b85
2 changed files with 9 additions and 1 deletions
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3
drivers/net/ethernet/sfc/efx.c
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@@ -1599,6 +1599,8 @@ static int efx_probe_nic(struct efx_nic *efx)
if (rc)
goto fail1;
efx_set_channels(efx);
rc = efx->type->dimension_resources(efx);
if (rc)
goto fail2;
@@ -1609,7 +1611,6 @@ static int efx_probe_nic(struct efx_nic *efx)
efx->rx_indir_table[i] =
ethtool_rxfh_indir_default(i, efx->rss_spread);
efx_set_channels(efx);
netif_set_real_num_tx_queues(efx->net_dev, efx->n_tx_channels);
netif_set_real_num_rx_queues(efx->net_dev, efx->n_rx_channels);