From a6a0974aae4209d039ba81226ded5246eea14961 Mon Sep 17 00:00:00 2001 From: Dave Ertman Date: Tue, 24 Jan 2023 09:19:43 -0800 Subject: ice: Prevent set_channel from changing queues while RDMA active The PF controls the set of queues that the RDMA auxiliary_driver requests resources from. The set_channel command will alter that pool and trigger a reconfiguration of the VSI, which breaks RDMA functionality. Prevent set_channel from executing when RDMA driver bound to auxiliary device. Adding a locked variable to pass down the call chain to avoid double locking the device_lock. Fixes: 348048e724a0 ("ice: Implement iidc operations") Signed-off-by: Dave Ertman Tested-by: Gurucharan G (A Contingent worker at Intel) Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/ice/ice_dcb_lib.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) (limited to 'drivers/net/ethernet/intel/ice/ice_dcb_lib.c') diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c index 4f24d441c35e..0a55c552189a 100644 --- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c @@ -441,7 +441,7 @@ int ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked) goto out; } - ice_pf_dcb_recfg(pf); + ice_pf_dcb_recfg(pf, false); out: /* enable previously downed VSIs */ @@ -731,12 +731,13 @@ static int ice_dcb_noncontig_cfg(struct ice_pf *pf) /** * ice_pf_dcb_recfg - Reconfigure all VEBs and VSIs * @pf: pointer to the PF struct + * @locked: is adev device lock held * * Assumed caller has already disabled all VSIs before * calling this function. Reconfiguring DCB based on * local_dcbx_cfg. */ -void ice_pf_dcb_recfg(struct ice_pf *pf) +void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { struct ice_dcbx_cfg *dcbcfg = &pf->hw.port_info->qos_cfg.local_dcbx_cfg; struct iidc_event *event; @@ -783,14 +784,16 @@ void ice_pf_dcb_recfg(struct ice_pf *pf) if (vsi->type == ICE_VSI_PF) ice_dcbnl_set_all(vsi); } - /* Notify the AUX drivers that TC change is finished */ - event = kzalloc(sizeof(*event), GFP_KERNEL); - if (!event) - return; + if (!locked) { + /* Notify the AUX drivers that TC change is finished */ + event = kzalloc(sizeof(*event), GFP_KERNEL); + if (!event) + return; - set_bit(IIDC_EVENT_AFTER_TC_CHANGE, event->type); - ice_send_event_to_aux(pf, event); - kfree(event); + set_bit(IIDC_EVENT_AFTER_TC_CHANGE, event->type); + ice_send_event_to_aux(pf, event); + kfree(event); + } } /** @@ -1044,7 +1047,7 @@ ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, } /* changes in configuration update VSI */ - ice_pf_dcb_recfg(pf); + ice_pf_dcb_recfg(pf, false); /* enable previously downed VSIs */ ice_dcb_ena_dis_vsi(pf, true, true); -- cgit v1.2.3