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| author |  Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
| 2023-02-16 10:07:31 +0800 |
|---|---|---|
| committer |  Tony Nguyen <anthony.l.nguyen@intel.com>
| 2023-03-07 13:45:56 -0800 |
| commit | ae4fe46983007bc46d87dcb284a5e5851c3e1c84 (patch) | |
| tree | e236e6c7d617ec81741c04b8b3fe09868baf6a86 /drivers/net/ethernet/intel/igc/igc_tsn.c | |
| parent | Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf... (diff) | |
| download | linux-ae4fe46983007bc46d87dcb284a5e5851c3e1c84.tar.gz linux-ae4fe46983007bc46d87dcb284a5e5851c3e1c84.tar.bz2 linux-ae4fe46983007bc46d87dcb284a5e5851c3e1c84.zip | |
igc: Add qbv_config_change_errors counter
Add ConfigChangeError(qbv_config_change_errors) when user try to set the
AdminBaseTime to past value while the current GCL is still running.
The ConfigChangeError counter should not be increased when a gate control
list is scheduled into the future.
User can use "ethtool -S <interface> | grep qbv_config_change_errors"
command to check the counter values.
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_tsn.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igc/igc_tsn.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c index a386c8d61dbf..94a2b0dfb54d 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -114,6 +114,7 @@ static int igc_tsn_disable_offload(struct igc_adapter *adapter) static int igc_tsn_enable_offload(struct igc_adapter *adapter) { struct igc_hw *hw = &adapter->hw; + bool tsn_mode_reconfig = false; u32 tqavctrl, baset_l, baset_h; u32 sec, nsec, cycle; ktime_t base_time, systim; @@ -226,6 +227,10 @@ skip_cbs: } tqavctrl = rd32(IGC_TQAVCTRL) & ~IGC_TQAVCTRL_FUTSCDDIS; + + if (tqavctrl & IGC_TQAVCTRL_TRANSMIT_MODE_TSN) + tsn_mode_reconfig = true; + tqavctrl |= IGC_TQAVCTRL_TRANSMIT_MODE_TSN | IGC_TQAVCTRL_ENHANCED_QAV; cycle = adapter->cycle_time; @@ -239,6 +244,13 @@ skip_cbs: s64 n = div64_s64(ktime_sub_ns(systim, base_time), cycle); base_time = ktime_add_ns(base_time, (n + 1) * cycle); + + /* Increase the counter if scheduling into the past while + * Gate Control List (GCL) is running. + */ + if ((rd32(IGC_BASET_H) || rd32(IGC_BASET_L)) && + tsn_mode_reconfig) + adapter->qbv_config_change_errors++; } else { /* According to datasheet section 7.5.2.9.3.3, FutScdDis bit * has to be configured before the cycle time and base time. |