[ Upstream commit b58dafbc6f1089942c1e74b8ab9c616fe06dbfac ]
LB_EN for prune switch rules was causing all TX traffic to loopback to the internal switch and dropped. When running bi-directional stress workloads with RDMA the RDPU would hang blocking tx and rx traffic.
Signed-off-by: Christopher N Bednarz christopher.n.bednarz@intel.com Reviewed-by: Bruce Allan bruce.w.allan@intel.com Signed-off-by: Anirudh Venkataramanan anirudh.venkataramanan@intel.com Tested-by: Andrew Bowers andrewx.bowers@intel.com Signed-off-by: Jeff Kirsher jeffrey.t.kirsher@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/intel/ice/ice_switch.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c index e40d5f34d59d..c5f6cfecc042 100644 --- a/drivers/net/ethernet/intel/ice/ice_switch.c +++ b/drivers/net/ethernet/intel/ice/ice_switch.c @@ -643,7 +643,12 @@ static void ice_fill_sw_info(struct ice_hw *hw, struct ice_fltr_info *fi) fi->fltr_act == ICE_FWD_TO_VSI_LIST || fi->fltr_act == ICE_FWD_TO_Q || fi->fltr_act == ICE_FWD_TO_QGRP)) { - fi->lb_en = true; + /* Setting LB for prune actions will result in replicated + * packets to the internal switch that will be dropped. + */ + if (fi->lkup_type != ICE_SW_LKUP_VLAN) + fi->lb_en = true; + /* Set lan_en to TRUE if * 1. The switch is a VEB AND * 2