* [PATCH iwl-next v5 1/2] ice: Remove and readd netdev during devlink reload
2024-02-05 13:03 [PATCH iwl-next v5 0/2] ice devlink reload refactor Wojciech Drewek
@ 2024-02-05 13:03 ` Wojciech Drewek
2024-02-08 17:03 ` [Intel-wired-lan] " Pucha, HimasekharX Reddy
2024-02-05 13:03 ` [PATCH iwl-next v5 2/2] ice: Fix debugfs with " Wojciech Drewek
1 sibling, 1 reply; 7+ messages in thread
From: Wojciech Drewek @ 2024-02-05 13:03 UTC (permalink / raw)
To: intel-wired-lan
Cc: netdev, jiri, przemyslaw.kitszel, vadim.fedorenko,
paul.m.stillwell.jr, bcreeley
Recent changes to the devlink reload (commit 9b2348e2d6c9
("devlink: warn about existing entities during reload-reinit"))
force the drivers to destroy devlink ports during reinit.
Adjust ice driver to this requirement, unregister netdvice, destroy
devlink port. ice_init_eth() was removed and all the common code
between probe and reload was moved to ice_load().
During devlink reload we can't take devl_lock (it's already taken)
and in ice_probe() we have to lock it. Use devl_* variant of the API
which does not acquire and release devl_lock. Guard ice_load()
with devl_lock only in case of probe.
Suggested-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
---
v2: empty init removed in ice_devlink_reinit_up
v3: refactor locking pattern as Brett suggested
v4: fix wrong function name in commit message
v5: move debugfs changes to separate commit
---
drivers/net/ethernet/intel/ice/ice.h | 2 +
drivers/net/ethernet/intel/ice/ice_devlink.c | 68 ++++++-
drivers/net/ethernet/intel/ice/ice_main.c | 186 ++++++-------------
3 files changed, 125 insertions(+), 131 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index a4ba60e17d0b..118e84835720 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -983,6 +983,8 @@ void ice_service_task_schedule(struct ice_pf *pf);
int ice_load(struct ice_pf *pf);
void ice_unload(struct ice_pf *pf);
void ice_adv_lnk_speed_maps_init(void);
+int ice_init_dev(struct ice_pf *pf);
+void ice_deinit_dev(struct ice_pf *pf);
/**
* ice_set_rdma_cap - enable RDMA support
diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.c b/drivers/net/ethernet/intel/ice/ice_devlink.c
index 97182bacafa3..cc717175178b 100644
--- a/drivers/net/ethernet/intel/ice/ice_devlink.c
+++ b/drivers/net/ethernet/intel/ice/ice_devlink.c
@@ -444,6 +444,20 @@ ice_devlink_reload_empr_start(struct ice_pf *pf,
return 0;
}
+/**
+ * ice_devlink_reinit_down - unload given PF
+ * @pf: pointer to the PF struct
+ */
+static void ice_devlink_reinit_down(struct ice_pf *pf)
+{
+ /* No need to take devl_lock, it's already taken by devlink API */
+ ice_unload(pf);
+ rtnl_lock();
+ ice_vsi_decfg(ice_get_main_vsi(pf));
+ rtnl_unlock();
+ ice_deinit_dev(pf);
+}
+
/**
* ice_devlink_reload_down - prepare for reload
* @devlink: pointer to the devlink instance to reload
@@ -477,7 +491,7 @@ ice_devlink_reload_down(struct devlink *devlink, bool netns_change,
"Remove all VFs before doing reinit\n");
return -EOPNOTSUPP;
}
- ice_unload(pf);
+ ice_devlink_reinit_down(pf);
return 0;
case DEVLINK_RELOAD_ACTION_FW_ACTIVATE:
return ice_devlink_reload_empr_start(pf, extack);
@@ -1269,6 +1283,45 @@ static int ice_devlink_set_parent(struct devlink_rate *devlink_rate,
return status;
}
+/**
+ * ice_devlink_reinit_up - do reinit of the given PF
+ * @pf: pointer to the PF struct
+ */
+static int ice_devlink_reinit_up(struct ice_pf *pf)
+{
+ struct ice_vsi *vsi = ice_get_main_vsi(pf);
+ struct ice_vsi_cfg_params params;
+ int err;
+
+ err = ice_init_dev(pf);
+ if (err)
+ return err;
+
+ params = ice_vsi_to_params(vsi);
+ params.flags = ICE_VSI_FLAG_INIT;
+
+ rtnl_lock();
+ err = ice_vsi_cfg(vsi, ¶ms);
+ rtnl_unlock();
+ if (err)
+ goto err_vsi_cfg;
+
+ /* No need to take devl_lock, it's already taken by devlink API */
+ err = ice_load(pf);
+ if (err)
+ goto err_load;
+
+ return 0;
+
+err_load:
+ rtnl_lock();
+ ice_vsi_decfg(vsi);
+ rtnl_unlock();
+err_vsi_cfg:
+ ice_deinit_dev(pf);
+ return err;
+}
+
/**
* ice_devlink_reload_up - do reload up after reinit
* @devlink: pointer to the devlink instance reloading
@@ -1289,7 +1342,7 @@ ice_devlink_reload_up(struct devlink *devlink,
switch (action) {
case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:
*actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT);
- return ice_load(pf);
+ return ice_devlink_reinit_up(pf);
case DEVLINK_RELOAD_ACTION_FW_ACTIVATE:
*actions_performed = BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE);
return ice_devlink_reload_empr_finish(pf, extack);
@@ -1695,6 +1748,7 @@ static const struct devlink_port_ops ice_devlink_port_ops = {
* @pf: the PF to create a devlink port for
*
* Create and register a devlink_port for this PF.
+ * This function has to be called under devl_lock.
*
* Return: zero on success or an error code on failure.
*/
@@ -1707,6 +1761,8 @@ int ice_devlink_create_pf_port(struct ice_pf *pf)
struct device *dev;
int err;
+ devlink = priv_to_devlink(pf);
+
dev = ice_pf_to_dev(pf);
devlink_port = &pf->devlink_port;
@@ -1727,10 +1783,9 @@ int ice_devlink_create_pf_port(struct ice_pf *pf)
ice_devlink_set_switch_id(pf, &attrs.switch_id);
devlink_port_attrs_set(devlink_port, &attrs);
- devlink = priv_to_devlink(pf);
- err = devlink_port_register_with_ops(devlink, devlink_port, vsi->idx,
- &ice_devlink_port_ops);
+ err = devl_port_register_with_ops(devlink, devlink_port, vsi->idx,
+ &ice_devlink_port_ops);
if (err) {
dev_err(dev, "Failed to create devlink port for PF %d, error %d\n",
pf->hw.pf_id, err);
@@ -1745,10 +1800,11 @@ int ice_devlink_create_pf_port(struct ice_pf *pf)
* @pf: the PF to cleanup
*
* Unregisters the devlink_port structure associated with this PF.
+ * This function has to be called under devl_lock.
*/
void ice_devlink_destroy_pf_port(struct ice_pf *pf)
{
- devlink_port_unregister(&pf->devlink_port);
+ devl_port_unregister(&pf->devlink_port);
}
/**
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 1fa3f40743f5..85a996ad2c1f 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -4574,90 +4574,6 @@ static void ice_decfg_netdev(struct ice_vsi *vsi)
vsi->netdev = NULL;
}
-static int ice_start_eth(struct ice_vsi *vsi)
-{
- int err;
-
- err = ice_init_mac_fltr(vsi->back);
- if (err)
- return err;
-
- err = ice_vsi_open(vsi);
- if (err)
- ice_fltr_remove_all(vsi);
-
- return err;
-}
-
-static void ice_stop_eth(struct ice_vsi *vsi)
-{
- ice_fltr_remove_all(vsi);
- ice_vsi_close(vsi);
-}
-
-static int ice_init_eth(struct ice_pf *pf)
-{
- struct ice_vsi *vsi = ice_get_main_vsi(pf);
- int err;
-
- if (!vsi)
- return -EINVAL;
-
- /* init channel list */
- INIT_LIST_HEAD(&vsi->ch_list);
-
- err = ice_cfg_netdev(vsi);
- if (err)
- return err;
- /* Setup DCB netlink interface */
- ice_dcbnl_setup(vsi);
-
- err = ice_init_mac_fltr(pf);
- if (err)
- goto err_init_mac_fltr;
-
- err = ice_devlink_create_pf_port(pf);
- if (err)
- goto err_devlink_create_pf_port;
-
- SET_NETDEV_DEVLINK_PORT(vsi->netdev, &pf->devlink_port);
-
- err = ice_register_netdev(vsi);
- if (err)
- goto err_register_netdev;
-
- err = ice_tc_indir_block_register(vsi);
- if (err)
- goto err_tc_indir_block_register;
-
- ice_napi_add(vsi);
-
- return 0;
-
-err_tc_indir_block_register:
- ice_unregister_netdev(vsi);
-err_register_netdev:
- ice_devlink_destroy_pf_port(pf);
-err_devlink_create_pf_port:
-err_init_mac_fltr:
- ice_decfg_netdev(vsi);
- return err;
-}
-
-static void ice_deinit_eth(struct ice_pf *pf)
-{
- struct ice_vsi *vsi = ice_get_main_vsi(pf);
-
- if (!vsi)
- return;
-
- ice_vsi_close(vsi);
- ice_unregister_netdev(vsi);
- ice_devlink_destroy_pf_port(pf);
- ice_tc_indir_block_unregister(vsi);
- ice_decfg_netdev(vsi);
-}
-
/**
* ice_wait_for_fw - wait for full FW readiness
* @hw: pointer to the hardware structure
@@ -4683,7 +4599,7 @@ static int ice_wait_for_fw(struct ice_hw *hw, u32 timeout)
return -ETIMEDOUT;
}
-static int ice_init_dev(struct ice_pf *pf)
+int ice_init_dev(struct ice_pf *pf)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
@@ -4776,7 +4692,7 @@ static int ice_init_dev(struct ice_pf *pf)
return err;
}
-static void ice_deinit_dev(struct ice_pf *pf)
+void ice_deinit_dev(struct ice_pf *pf)
{
ice_free_irq_msix_misc(pf);
ice_deinit_pf(pf);
@@ -5081,31 +4997,47 @@ static void ice_deinit(struct ice_pf *pf)
/**
* ice_load - load pf by init hw and starting VSI
* @pf: pointer to the pf instance
+ *
+ * This function has to be called under devl_lock.
*/
int ice_load(struct ice_pf *pf)
{
- struct ice_vsi_cfg_params params = {};
struct ice_vsi *vsi;
int err;
- err = ice_init_dev(pf);
+ devl_assert_locked(priv_to_devlink(pf));
+
+ vsi = ice_get_main_vsi(pf);
+
+ /* init channel list */
+ INIT_LIST_HEAD(&vsi->ch_list);
+
+ err = ice_cfg_netdev(vsi);
if (err)
return err;
- vsi = ice_get_main_vsi(pf);
+ /* Setup DCB netlink interface */
+ ice_dcbnl_setup(vsi);
- params = ice_vsi_to_params(vsi);
- params.flags = ICE_VSI_FLAG_INIT;
+ err = ice_init_mac_fltr(pf);
+ if (err)
+ goto err_init_mac_fltr;
- rtnl_lock();
- err = ice_vsi_cfg(vsi, ¶ms);
+ err = ice_devlink_create_pf_port(pf);
if (err)
- goto err_vsi_cfg;
+ goto err_devlink_create_pf_port;
- err = ice_start_eth(ice_get_main_vsi(pf));
+ SET_NETDEV_DEVLINK_PORT(vsi->netdev, &pf->devlink_port);
+
+ err = ice_register_netdev(vsi);
+ if (err)
+ goto err_register_netdev;
+
+ err = ice_tc_indir_block_register(vsi);
if (err)
- goto err_start_eth;
- rtnl_unlock();
+ goto err_tc_indir_block_register;
+
+ ice_napi_add(vsi);
err = ice_init_rdma(pf);
if (err)
@@ -5119,29 +5051,35 @@ int ice_load(struct ice_pf *pf)
return 0;
err_init_rdma:
- ice_vsi_close(ice_get_main_vsi(pf));
- rtnl_lock();
-err_start_eth:
- ice_vsi_decfg(ice_get_main_vsi(pf));
-err_vsi_cfg:
- rtnl_unlock();
- ice_deinit_dev(pf);
+ ice_tc_indir_block_unregister(vsi);
+err_tc_indir_block_register:
+ ice_unregister_netdev(vsi);
+err_register_netdev:
+ ice_devlink_destroy_pf_port(pf);
+err_devlink_create_pf_port:
+err_init_mac_fltr:
+ ice_decfg_netdev(vsi);
return err;
}
/**
* ice_unload - unload pf by stopping VSI and deinit hw
* @pf: pointer to the pf instance
+ *
+ * This function has to be called under devl_lock.
*/
void ice_unload(struct ice_pf *pf)
{
+ struct ice_vsi *vsi = ice_get_main_vsi(pf);
+
+ devl_assert_locked(priv_to_devlink(pf));
+
ice_deinit_features(pf);
ice_deinit_rdma(pf);
- rtnl_lock();
- ice_stop_eth(ice_get_main_vsi(pf));
- ice_vsi_decfg(ice_get_main_vsi(pf));
- rtnl_unlock();
- ice_deinit_dev(pf);
+ ice_tc_indir_block_unregister(vsi);
+ ice_unregister_netdev(vsi);
+ ice_devlink_destroy_pf_port(pf);
+ ice_decfg_netdev(vsi);
}
/**
@@ -5239,27 +5177,23 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
if (err)
goto err_init;
- err = ice_init_eth(pf);
+ devl_lock(priv_to_devlink(pf));
+ err = ice_load(pf);
+ devl_unlock(priv_to_devlink(pf));
if (err)
- goto err_init_eth;
-
- err = ice_init_rdma(pf);
- if (err)
- goto err_init_rdma;
+ goto err_load;
err = ice_init_devlink(pf);
if (err)
goto err_init_devlink;
- ice_init_features(pf);
-
return 0;
err_init_devlink:
- ice_deinit_rdma(pf);
-err_init_rdma:
- ice_deinit_eth(pf);
-err_init_eth:
+ devl_lock(priv_to_devlink(pf));
+ ice_unload(pf);
+ devl_unlock(priv_to_devlink(pf));
+err_load:
ice_deinit(pf);
err_init:
pci_disable_device(pdev);
@@ -5357,12 +5291,14 @@ static void ice_remove(struct pci_dev *pdev)
if (!ice_is_safe_mode(pf))
ice_remove_arfs(pf);
- ice_deinit_features(pf);
+
ice_deinit_devlink(pf);
- ice_deinit_rdma(pf);
- ice_deinit_eth(pf);
- ice_deinit(pf);
+ devl_lock(priv_to_devlink(pf));
+ ice_unload(pf);
+ devl_unlock(priv_to_devlink(pf));
+
+ ice_deinit(pf);
ice_vsi_release_all(pf);
ice_setup_mc_magic_wake(pf);
--
2.40.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH iwl-next v5 2/2] ice: Fix debugfs with devlink reload
2024-02-05 13:03 [PATCH iwl-next v5 0/2] ice devlink reload refactor Wojciech Drewek
2024-02-05 13:03 ` [PATCH iwl-next v5 1/2] ice: Remove and readd netdev during devlink reload Wojciech Drewek
@ 2024-02-05 13:03 ` Wojciech Drewek
2024-02-08 17:06 ` [Intel-wired-lan] " Pucha, HimasekharX Reddy
` (2 more replies)
1 sibling, 3 replies; 7+ messages in thread
From: Wojciech Drewek @ 2024-02-05 13:03 UTC (permalink / raw)
To: intel-wired-lan
Cc: netdev, jiri, przemyslaw.kitszel, vadim.fedorenko,
paul.m.stillwell.jr, bcreeley
During devlink reload it is needed to remove debugfs entries
correlated with only one PF. ice_debugfs_exit() removes all
entries created by ice driver so we can't use it.
Introduce ice_debugfs_pf_deinit() in order to release PF's
debugfs entries. Move ice_debugfs_exit() call to ice_module_exit(),
it makes more sense since ice_debugfs_init() is called in
ice_module_init() and not in ice_probe().
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
---
drivers/net/ethernet/intel/ice/ice.h | 1 +
drivers/net/ethernet/intel/ice/ice_debugfs.c | 10 ++++++++++
drivers/net/ethernet/intel/ice/ice_fwlog.c | 2 ++
drivers/net/ethernet/intel/ice/ice_main.c | 3 +--
4 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 118e84835720..365c03d1c462 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -896,6 +896,7 @@ static inline bool ice_is_adq_active(struct ice_pf *pf)
}
void ice_debugfs_fwlog_init(struct ice_pf *pf);
+void ice_debugfs_pf_deinit(struct ice_pf *pf);
void ice_debugfs_init(void);
void ice_debugfs_exit(void);
void ice_pf_fwlog_update_module(struct ice_pf *pf, int log_level, int module);
diff --git a/drivers/net/ethernet/intel/ice/ice_debugfs.c b/drivers/net/ethernet/intel/ice/ice_debugfs.c
index 85aa31dd86b1..d252d98218d0 100644
--- a/drivers/net/ethernet/intel/ice/ice_debugfs.c
+++ b/drivers/net/ethernet/intel/ice/ice_debugfs.c
@@ -644,6 +644,16 @@ void ice_debugfs_fwlog_init(struct ice_pf *pf)
kfree(fw_modules);
}
+/**
+ * ice_debugfs_pf_deinit - cleanup PF's debugfs
+ * @pf: pointer to the PF struct
+ */
+void ice_debugfs_pf_deinit(struct ice_pf *pf)
+{
+ debugfs_remove_recursive(pf->ice_debugfs_pf);
+ pf->ice_debugfs_pf = NULL;
+}
+
/**
* ice_debugfs_init - create root directory for debugfs entries
*/
diff --git a/drivers/net/ethernet/intel/ice/ice_fwlog.c b/drivers/net/ethernet/intel/ice/ice_fwlog.c
index 92b5dac481cd..4fd15387a7e5 100644
--- a/drivers/net/ethernet/intel/ice/ice_fwlog.c
+++ b/drivers/net/ethernet/intel/ice/ice_fwlog.c
@@ -188,6 +188,8 @@ void ice_fwlog_deinit(struct ice_hw *hw)
if (hw->bus.func)
return;
+ ice_debugfs_pf_deinit(hw->back);
+
/* make sure FW logging is disabled to not put the FW in a weird state
* for the next driver load
*/
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 85a996ad2c1f..9c2c8637b4a7 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -5276,8 +5276,6 @@ static void ice_remove(struct pci_dev *pdev)
msleep(100);
}
- ice_debugfs_exit();
-
if (test_bit(ICE_FLAG_SRIOV_ENA, pf->flags)) {
set_bit(ICE_VF_RESETS_DISABLED, pf->state);
ice_free_vfs(pf);
@@ -5783,6 +5781,7 @@ module_init(ice_module_init);
static void __exit ice_module_exit(void)
{
pci_unregister_driver(&ice_driver);
+ ice_debugfs_exit();
destroy_workqueue(ice_wq);
destroy_workqueue(ice_lag_wq);
pr_info("module unloaded\n");
--
2.40.1
^ permalink raw reply related [flat|nested] 7+ messages in thread