Message ID | 20210119004028.2809425-8-vinicius.gomes@intel.com (mailing list archive) |
---|---|
State | Superseded |
Delegated to: | Netdev Maintainers |
Headers | show |
Series | ethtool: Add support for frame preemption | expand |
Context | Check | Description |
---|---|---|
netdev/cover_letter | success | Link |
netdev/fixes_present | success | Link |
netdev/patch_count | success | Link |
netdev/tree_selection | success | Clearly marked for net-next |
netdev/subject_prefix | success | Link |
netdev/cc_maintainers | warning | 2 maintainers not CCed: davem@davemloft.net jesse.brandeburg@intel.com |
netdev/source_inline | success | Was 0 now: 0 |
netdev/verify_signedoff | success | Link |
netdev/module_param | success | Was 0 now: 0 |
netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
netdev/verify_fixes | success | Link |
netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 50 lines checked |
netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
netdev/header_inline | success | Link |
netdev/stable | success | Stable not CCed |
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index f1b31fa04734..6a09f37ba7ed 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -4818,6 +4818,23 @@ static int igc_save_qbv_schedule(struct igc_adapter *adapter, return 0; } +static int igc_save_frame_preemption(struct igc_adapter *adapter, + struct tc_preempt_qopt_offload *qopt) +{ + u32 preempt; + int i; + + preempt = qopt->preemptible_queues; + + for (i = 0; i < adapter->num_tx_queues; i++) { + struct igc_ring *ring = adapter->tx_ring[i]; + + ring->preemptible = preempt & BIT(i); + } + + return 0; +} + static int igc_tsn_enable_qbv_scheduling(struct igc_adapter *adapter, struct tc_taprio_qopt_offload *qopt) { @@ -4834,6 +4851,18 @@ static int igc_tsn_enable_qbv_scheduling(struct igc_adapter *adapter, return igc_tsn_offload_apply(adapter); } +static int igc_tsn_enable_frame_preemption(struct igc_adapter *adapter, + struct tc_preempt_qopt_offload *qopt) +{ + int err; + + err = igc_save_frame_preemption(adapter, qopt); + if (err) + return err; + + return igc_tsn_offload_apply(adapter); +} + static int igc_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data) { @@ -4846,6 +4875,9 @@ static int igc_setup_tc(struct net_device *dev, enum tc_setup_type type, case TC_SETUP_QDISC_ETF: return igc_tsn_enable_launchtime(adapter, type_data); + case TC_SETUP_PREEMPT: + return igc_tsn_enable_frame_preemption(adapter, type_data); + default: return -EOPNOTSUPP; }
After the set of queues that are marked as preemptible are exposed to the driver we can configure the hardware to enable the frame preemption functionality. Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com> --- drivers/net/ethernet/intel/igc/igc_main.c | 32 +++++++++++++++++++++++ 1 file changed, 32 insertions(+)