diff options
| author | Jiri Pirko <jiri@nvidia.com> | 2023-01-26 10:58:35 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-01-27 15:32:02 +0300 |
| commit | 075935f0ae0fbbe469a911d685f6cc59de892700 (patch) | |
| tree | 559d5b158e2054b9703c3d17e597e0bf9680dfe7 /drivers/net/ethernet/netronome | |
| parent | 3f716a620e1314aa9abe69052bdc9df719372bd4 (diff) | |
| download | linux-075935f0ae0fbbe469a911d685f6cc59de892700.tar.xz | |
devlink: protect devlink param list by instance lock
Commit 1d18bb1a4ddd ("devlink: allow registering parameters after
the instance") as the subject implies introduced possibility to register
devlink params even for already registered devlink instance. This is a
bit problematic, as the consistency or params list was originally
secured by the fact it is static during devlink lifetime. So in order to
protect the params list, take devlink instance lock during the params
operations. Introduce unlocked function variants and use them in drivers
in locked context. Put lock assertions to appropriate places.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Tested-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/devlink_param.c | 8 | ||||
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_net_main.c | 7 |
2 files changed, 8 insertions, 7 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/devlink_param.c b/drivers/net/ethernet/netronome/nfp/devlink_param.c index db297ee4d7ad..a655f9e69a7b 100644 --- a/drivers/net/ethernet/netronome/nfp/devlink_param.c +++ b/drivers/net/ethernet/netronome/nfp/devlink_param.c @@ -233,8 +233,8 @@ int nfp_devlink_params_register(struct nfp_pf *pf) if (err <= 0) return err; - return devlink_params_register(devlink, nfp_devlink_params, - ARRAY_SIZE(nfp_devlink_params)); + return devl_params_register(devlink, nfp_devlink_params, + ARRAY_SIZE(nfp_devlink_params)); } void nfp_devlink_params_unregister(struct nfp_pf *pf) @@ -245,6 +245,6 @@ void nfp_devlink_params_unregister(struct nfp_pf *pf) if (err <= 0) return; - devlink_params_unregister(priv_to_devlink(pf), nfp_devlink_params, - ARRAY_SIZE(nfp_devlink_params)); + devl_params_unregister(priv_to_devlink(pf), nfp_devlink_params, + ARRAY_SIZE(nfp_devlink_params)); } diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c index abfe788d558f..cbe4972ba104 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c @@ -754,11 +754,11 @@ int nfp_net_pci_probe(struct nfp_pf *pf) if (err) goto err_devlink_unreg; + devl_lock(devlink); err = nfp_devlink_params_register(pf); if (err) goto err_shared_buf_unreg; - devl_lock(devlink); pf->ddir = nfp_net_debugfs_device_add(pf->pdev); /* Allocate the vnics and do basic init */ @@ -791,9 +791,9 @@ err_free_vnics: nfp_net_pf_free_vnics(pf); err_clean_ddir: nfp_net_debugfs_dir_clean(&pf->ddir); - devl_unlock(devlink); nfp_devlink_params_unregister(pf); err_shared_buf_unreg: + devl_unlock(devlink); nfp_shared_buf_unregister(pf); err_devlink_unreg: cancel_work_sync(&pf->port_refresh_work); @@ -821,9 +821,10 @@ void nfp_net_pci_remove(struct nfp_pf *pf) /* stop app first, to avoid double free of ctrl vNIC's ddir */ nfp_net_debugfs_dir_clean(&pf->ddir); + nfp_devlink_params_unregister(pf); + devl_unlock(devlink); - nfp_devlink_params_unregister(pf); nfp_shared_buf_unregister(pf); nfp_net_pf_free_irqs(pf); |