From: Shradha Shah <sshah@solarflare•com>
To: David Miller <davem@davemloft•net>
Cc: <netdev@vger•kernel.org>, <linux-net-drivers@solarflare•com>
Subject: [PATCH net-next 09/14] sfc: suppress ENOENT error messages from MC_CMD_MAC_STATS
Date: Fri, 29 May 2015 11:02:40 +0100 [thread overview]
Message-ID: <55683940.8020000@solarflare.com> (raw)
In-Reply-To: <55683895.2090408@solarflare.com>
From: Daniel Pieczko <dpieczko@solarflare•com>
MC_CMD_MAC_STATS can be called on a function before a
vadaptor has been created, as the kernel can call into this
through ndo_get_stats/ndo_get_stats64.
If MC_CMD_MAC_STATS is called before the DMA queues have been
setup, so that a vadaptor has not been created yet, firmware
will return ENOENT. This is expected, so suppress the MCDI
error message in this case.
Signed-off-by: Shradha Shah <sshah@solarflare•com>
---
drivers/net/ethernet/sfc/ef10.c | 11 ++++++++---
drivers/net/ethernet/sfc/mcdi_port.c | 8 ++++++--
2 files changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 1e83c18..c68bf55 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -1330,11 +1330,16 @@ static int efx_ef10_try_update_nic_stats_vf(struct efx_nic *efx)
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, EVB_PORT_ID_ASSIGNED);
spin_unlock_bh(&efx->stats_lock);
- rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), NULL,
- 0, NULL);
+ rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
+ NULL, 0, NULL);
spin_lock_bh(&efx->stats_lock);
- if (rc)
+ if (rc) {
+ /* Expect ENOENT if DMA queues have not been set up */
+ if (rc != -ENOENT || atomic_read(&efx->active_queues))
+ efx_mcdi_display_error(efx, MC_CMD_MAC_STATS,
+ sizeof(inbuf), NULL, 0, rc);
goto out;
+ }
generation_end = dma_stats[MC_CMD_MAC_GENERATION_END];
if (generation_end == EFX_MC_STATS_GENERATION_INVALID) {
diff --git a/drivers/net/ethernet/sfc/mcdi_port.c b/drivers/net/ethernet/sfc/mcdi_port.c
index fffc348..7f295c4 100644
--- a/drivers/net/ethernet/sfc/mcdi_port.c
+++ b/drivers/net/ethernet/sfc/mcdi_port.c
@@ -948,8 +948,12 @@ static int efx_mcdi_mac_stats(struct efx_nic *efx,
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id);
- rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
- NULL, 0, NULL);
+ rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
+ NULL, 0, NULL);
+ /* Expect ENOENT if DMA queues have not been set up */
+ if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues)))
+ efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf),
+ NULL, 0, rc);
return rc;
}
next prev parent reply other threads:[~2015-05-29 10:02 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-29 9:59 [PATCH net-next 00/14] sfc: ndo_get_phys_port_id, vadaptor stats and PF unload when Vf's assigned to guest Shradha Shah
2015-05-29 10:01 ` [PATCH net-next 01/14] sfc: Add sysfs entry for physical port Shradha Shah
2015-06-01 0:32 ` David Miller
2015-05-29 10:01 ` [PATCH net-next 02/14] sfc: Add sysfs entry for flags (link control and primary) Shradha Shah
2015-05-29 10:48 ` David Laight
2015-05-29 13:09 ` Edward Cree
2015-05-29 10:01 ` [PATCH net-next 03/14] sfc: Implement ndo_gets_phys_port_id() for EF10 VFs Shradha Shah
2015-05-29 10:01 ` [PATCH net-next 04/14] sfc: add "port_" prefix to MAC stats Shradha Shah
2015-05-29 10:01 ` [PATCH net-next 05/14] sfc: set the port-id when calling MC_CMD_MAC_STATS Shradha Shah
2015-05-29 10:02 ` [PATCH net-next 06/14] sfc: display vadaptor statistics for all interfaces Shradha Shah
2015-05-29 10:02 ` [PATCH net-next 07/14] sfc: DMA the VF stats only when requested Shradha Shah
2015-05-29 10:02 ` [PATCH net-next 08/14] sfc: update netdevice statistics to use vadaptor stats Shradha Shah
2015-05-29 10:02 ` Shradha Shah [this message]
2015-05-29 10:03 ` [PATCH net-next 11/14] sfc: don't update stats on VF when called in atomic context Shradha Shah
2015-05-29 10:03 ` [PATCH net-next 12/14] sfc: do not allow VFs to be destroyed if assigned to guests Shradha Shah
2015-05-29 10:03 ` [PATCH net-next 13/14] sfc: force removal of VF and vport on driver removal Shradha Shah
2015-05-29 10:03 ` [PATCH net-next 14/14] sfc: leak vports if a VF is assigned during PF unload Shradha Shah
2015-05-29 10:08 ` [PATCH net-next 10/14] sfc: suppress vadaptor stats when EVB is not present Shradha Shah
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