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Message-ID: <20241028100341.16631-8-michal.swiatkowski@linux.intel.com>
Date: Mon, 28 Oct 2024 11:03:39 +0100
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
pawel.chmielewski@...el.com,
sridhar.samudrala@...el.com,
jacob.e.keller@...el.com,
pio.raczynski@...il.com,
konrad.knitter@...el.com,
marcin.szycik@...el.com,
wojciech.drewek@...el.com,
nex.sw.ncis.nat.hpm.dev@...el.com,
przemyslaw.kitszel@...el.com,
jiri@...nulli.us,
horms@...nel.org,
David.Laight@...LAB.COM
Subject: [iwl-next v6 7/9] ice: enable_rdma devlink param
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@...el.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.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 29c1fec4fa93..04daeb831f84 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink.c
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink.c
@@ -1579,6 +1579,19 @@ 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,
@@ -1594,6 +1607,8 @@ 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[] = {
@@ -1734,6 +1749,10 @@ 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 e833c25dc970..c0dc1f48f5d6 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -833,7 +833,13 @@ 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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