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sfc: on MC reset, clear PIO buffer linkage in TXQs
Otherwise, if we fail to allocate new PIO buffers, our TXQs will try to
use the old ones, which aren't there any more.
Fixes: 183233bec8
"sfc: Allocate and link PIO buffers; map them with write-combining"
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 16 additions and 0 deletions
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@ -619,6 +619,17 @@ static int efx_ef10_link_piobufs(struct efx_nic *efx)
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return rc;
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}
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static void efx_ef10_forget_old_piobufs(struct efx_nic *efx)
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{
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struct efx_channel *channel;
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struct efx_tx_queue *tx_queue;
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/* All our existing PIO buffers went away */
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efx_for_each_channel(channel, efx)
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efx_for_each_channel_tx_queue(tx_queue, channel)
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tx_queue->piobuf = NULL;
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}
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#else /* !EFX_USE_PIO */
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static int efx_ef10_alloc_piobufs(struct efx_nic *efx, unsigned int n)
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@ -635,6 +646,10 @@ static void efx_ef10_free_piobufs(struct efx_nic *efx)
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{
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}
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static void efx_ef10_forget_old_piobufs(struct efx_nic *efx)
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{
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}
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#endif /* EFX_USE_PIO */
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static void efx_ef10_remove(struct efx_nic *efx)
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@ -1018,6 +1033,7 @@ static void efx_ef10_reset_mc_allocations(struct efx_nic *efx)
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nic_data->must_realloc_vis = true;
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nic_data->must_restore_filters = true;
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nic_data->must_restore_piobufs = true;
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efx_ef10_forget_old_piobufs(efx);
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nic_data->rx_rss_context = EFX_EF10_RSS_CONTEXT_INVALID;
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/* Driver-created vswitches and vports must be re-created */
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