[Intel-wired-lan] [iwl-next v3 6/8] ice: enable_rdma devlink param
Michal Swiatkowski
michal.swiatkowski at linux.intel.com
Thu Aug 8 07:20:14 UTC 2024
Implement enable_rdma devlink parameter to allow user to turn RDMA
feature on and off.
It is useful when there is no enough interrupts and user doesn't need
RDMA feature.
Reviewed-by: Jan Sokolowski <jan.sokolowski at intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel at intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski at linux.intel.com>
---
.../net/ethernet/intel/ice/devlink/devlink.c | 19 +++++++++++++++++++
drivers/net/ethernet/intel/ice/ice_lib.c | 8 +++++++-
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink.c b/drivers/net/ethernet/intel/ice/devlink/devlink.c
index bdc22ea13e0f..530d443a8e14 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink.c
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink.c
@@ -1544,6 +1544,19 @@ ice_devlink_msix_min_pf_validate(struct devlink *devlink, u32 id,
return 0;
}
+static int ice_devlink_enable_rdma_validate(struct devlink *devlink, u32 id,
+ union devlink_param_value val,
+ struct netlink_ext_ack *extack)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+ bool new_state = val.vbool;
+
+ if (new_state && !test_bit(ICE_FLAG_RDMA_ENA, pf->flags))
+ return -EOPNOTSUPP;
+
+ return 0;
+}
+
enum ice_param_id {
ICE_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
ICE_DEVLINK_PARAM_ID_TX_SCHED_LAYERS,
@@ -1559,6 +1572,8 @@ static const struct devlink_param ice_dvl_rdma_params[] = {
ice_devlink_enable_iw_get,
ice_devlink_enable_iw_set,
ice_devlink_enable_iw_validate),
+ DEVLINK_PARAM_GENERIC(ENABLE_RDMA, BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
+ NULL, NULL, ice_devlink_enable_rdma_validate),
};
static const struct devlink_param ice_dvl_msix_params[] = {
@@ -1700,6 +1715,10 @@ int ice_devlink_register_params(struct ice_pf *pf)
devl_param_driverinit_value_set(devlink,
DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
value);
+ value.vbool = test_bit(ICE_FLAG_RDMA_ENA, pf->flags);
+ devl_param_driverinit_value_set(devlink,
+ DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
+ value);
return 0;
}
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index fcde08334880..93a7b875f8aa 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -834,7 +834,13 @@ bool ice_is_safe_mode(struct ice_pf *pf)
*/
bool ice_is_rdma_ena(struct ice_pf *pf)
{
- return test_bit(ICE_FLAG_RDMA_ENA, pf->flags);
+ union devlink_param_value value;
+ int err;
+
+ err = devl_param_driverinit_value_get(priv_to_devlink(pf),
+ DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
+ &value);
+ return err ? test_bit(ICE_FLAG_RDMA_ENA, pf->flags) : value.vbool;
}
/**
--
2.42.0
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