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| author | Mitch Williams <mitch.a.williams@intel.com> | 2015-06-04 23:23:58 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-07-23 15:24:45 +0300 |
| commit | e6d038de13c82f8446d9db5b3d9bb7788344b2bd (patch) | |
| tree | 7c2508e31e58a0fe83d5728386c4566648e44576 /drivers/net/ethernet/intel/i40evf/i40evf.h | |
| parent | f4ca1a229535f1e7eb8253504c66e01e4623c278 (diff) | |
| download | linux-e6d038de13c82f8446d9db5b3d9bb7788344b2bd.tar.xz | |
i40evf: handle big resets
The most common type of reset that the VF will encounter is a PF reset
that cascades down into a VF reset for each VF. In this case, the VF
will always be assigned the same VSI and recovery is fairly simple.
However, in the case of 'bigger' resets, such as a Core or EMP reset,
when the device is reinitialized, it's probable that the VF will NOT get
the same VSI. When this happens, the VF will not be able to recover, as
it will continue to request resources for its original VSI.
Add an extra state to the admin queue state machine so that the driver
can re-request its configuration information at runtime. During reset
recovery, set this bit in the aq_required field, and fetch the (possibly
new) configuration information before attempting to bring the driver
back up. Since the driver doesn't know what kind of reset it has
encountered, this step is done even for a PF reset, but it doesn't hurt
anything - it just gets the same VSI back.
Change-ID: I915d59ffb40375215117362f4ac7a37811aba748
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40evf/i40evf.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40evf.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf.h b/drivers/net/ethernet/intel/i40evf/i40evf.h index f3bcd05f7ecf..dfc5bc539890 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf.h +++ b/drivers/net/ethernet/intel/i40evf/i40evf.h @@ -234,6 +234,7 @@ struct i40evf_adapter { #define I40EVF_FLAG_AQ_CONFIGURE_QUEUES (u32)(1 << 6) #define I40EVF_FLAG_AQ_MAP_VECTORS (u32)(1 << 7) #define I40EVF_FLAG_AQ_HANDLE_RESET (u32)(1 << 8) +#define I40EVF_FLAG_AQ_GET_CONFIG (u32)(1 << 10) /* OS defined structs */ struct net_device *netdev; @@ -273,6 +274,7 @@ extern const char i40evf_driver_version[]; int i40evf_up(struct i40evf_adapter *adapter); void i40evf_down(struct i40evf_adapter *adapter); +int i40evf_process_config(struct i40evf_adapter *adapter); void i40evf_reset(struct i40evf_adapter *adapter); void i40evf_set_ethtool_ops(struct net_device *netdev); void i40evf_update_stats(struct i40evf_adapter *adapter); |