diff options
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/intel/igc/igc_main.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 1c16cd35c81c..569747bbefd8 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -4702,14 +4702,35 @@ static int igc_save_launchtime_params(struct igc_adapter *adapter, int queue, return 0; } -static bool validate_schedule(const struct tc_taprio_qopt_offload *qopt) +static bool is_base_time_past(ktime_t base_time, const struct timespec64 *now) +{ + struct timespec64 b; + + b = ktime_to_timespec64(base_time); + + return timespec64_compare(now, &b) > 0; +} + +static bool validate_schedule(struct igc_adapter *adapter, + const struct tc_taprio_qopt_offload *qopt) { int queue_uses[IGC_MAX_TX_QUEUES] = { }; + struct timespec64 now; size_t n; if (qopt->cycle_time_extension) return false; + igc_ptp_read(adapter, &now); + + /* If we program the controller's BASET registers with a time + * in the future, it will hold all the packets until that + * time, causing a lot of TX Hangs, so to avoid that, we + * reject schedules that would start in the future. + */ + if (!is_base_time_past(qopt->base_time, &now)) + return false; + for (n = 0; n < qopt->num_entries; n++) { const struct tc_taprio_sched_entry *e; int i; @@ -4764,7 +4785,7 @@ static int igc_save_qbv_schedule(struct igc_adapter *adapter, if (adapter->base_time) return -EALREADY; - if (!validate_schedule(qopt)) + if (!validate_schedule(adapter, qopt)) return -EINVAL; adapter->cycle_time = qopt->cycle_time; |