diff options
| author | Edward Cree <ecree@solarflare.com> | 2016-05-24 18:53:36 +0100 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-07-10 23:07:29 -0400 |
| commit | e2de678c191464580160b68b896d9078aca8b2fc (patch) | |
| tree | 5d18c0f32975f8e942d9d301df3bd2045873b031 /drivers/net | |
| parent | 27b56c6154943a860c9266ec8f3dc96ba2b1aa19 (diff) | |
sfc: on MC reset, clear PIO buffer linkage in TXQs
[ 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: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/sfc/ef10.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index feca46efa12f..c642e201a45e 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -452,6 +452,17 @@ 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) @@ -468,6 +479,10 @@ 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) @@ -699,6 +714,7 @@ 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; } |