From: Jan Sokolowski <jan.sokolowski@intel.com> stable inclusion from stable-5.10.50 commit cad22e48cabe00e055c6ae7999fc3487e422471c bugzilla: 174522 https://gitee.com/openeuler/kernel/issues/I4DNFY Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 956e759d5f8e0859e86b951a8779c60af633aafd ] A recent change that made i40e use new udp_tunnel infrastructure uses a method that expects to be called under rtnl lock. However, not all codepaths do the lock prior to calling i40e_setup_pf_switch. Fix that by adding additional rtnl locking and unlocking. Fixes: 40a98cb6f01f ("i40e: convert to new udp_tunnel infrastructure") Signed-off-by: Jan Sokolowski <jan.sokolowski@intel.com> Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com> Tested-by: Tony Brelinski <tonyx.brelinski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> --- drivers/net/ethernet/intel/i40e/i40e_main.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index f2ba8ad9b6aa..52e31f712a54 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -31,7 +31,7 @@ static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi); static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired); static int i40e_add_vsi(struct i40e_vsi *vsi); static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi); -static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit); +static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit, bool lock_acquired); static int i40e_setup_misc_vector(struct i40e_pf *pf); static void i40e_determine_queue_usage(struct i40e_pf *pf); static int i40e_setup_pf_filter_control(struct i40e_pf *pf); @@ -10114,7 +10114,7 @@ static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired) /* do basic switch setup */ if (!lock_acquired) rtnl_lock(); - ret = i40e_setup_pf_switch(pf, reinit); + ret = i40e_setup_pf_switch(pf, reinit, true); if (ret) goto end_unlock; @@ -14169,10 +14169,11 @@ int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig) * i40e_setup_pf_switch - Setup the HW switch on startup or after reset * @pf: board private structure * @reinit: if the Main VSI needs to re-initialized. + * @lock_acquired: indicates whether or not the lock has been acquired * * Returns 0 on success, negative value on failure **/ -static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit) +static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit, bool lock_acquired) { u16 flags = 0; int ret; @@ -14274,9 +14275,15 @@ static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit) i40e_ptp_init(pf); + if (!lock_acquired) + rtnl_lock(); + /* repopulate tunnel port filters */ udp_tunnel_nic_reset_ntf(pf->vsi[pf->lan_vsi]->netdev); + if (!lock_acquired) + rtnl_unlock(); + return ret; } @@ -15048,7 +15055,7 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent) pf->flags |= I40E_FLAG_VEB_MODE_ENABLED; } #endif - err = i40e_setup_pf_switch(pf, false); + err = i40e_setup_pf_switch(pf, false, false); if (err) { dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err); goto err_vsis; -- 2.20.1