iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sfc: on MC reset, clear PIO buffer linkage in TXQs

Browse Source 
[ Upstream commit c0795bf64cba4d1b796fdc5b74b33772841ed1bb ]

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: 183233bec810 "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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Edward Cree 2016-05-24 18:53:36 +01:00 committed by Greg Kroah-Hartman
parent bfe951d547
commit 450db517b9
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/net/ethernet/sfc/ef10.c
View File

@ -619,6 +619,17 @@ fail:
return rc;
}
static void efx_ef10_forget_old_piobufs(struct efx_nic *efx)
{
struct efx_channel *channel;
struct efx_tx_queue *tx_queue;
/* All our existing PIO buffers went away */
efx_for_each_channel(channel, efx)
efx_for_each_channel_tx_queue(tx_queue, channel)
tx_queue->piobuf = NULL;
}
#else /* !EFX_USE_PIO */
static int efx_ef10_alloc_piobufs(struct efx_nic *efx, unsigned int n)
@ -635,6 +646,10 @@ static void efx_ef10_free_piobufs(struct efx_nic *efx)
{
}
static void efx_ef10_forget_old_piobufs(struct efx_nic *efx)
{
}
#endif /* EFX_USE_PIO */
static void efx_ef10_remove(struct efx_nic *efx)
@ -1018,6 +1033,7 @@ static void efx_ef10_reset_mc_allocations(struct efx_nic *efx)
nic_data->must_realloc_vis = true;
nic_data->must_restore_filters = true;
nic_data->must_restore_piobufs = true;
efx_ef10_forget_old_piobufs(efx);
nic_data->rx_rss_context = EFX_EF10_RSS_CONTEXT_INVALID;
/* Driver-created vswitches and vports must be re-created */