From 1166494891da88af25c444e65cd4f32c3e026b46 Mon Sep 17 00:00:00 2001 From: John Hurley Date: Tue, 27 Nov 2018 14:04:11 -0800 Subject: [PATCH] nfp: flower: release metadata on offload failure Calling nfp_compile_flow_metadata both assigns a stats context and increments a ref counter on (or allocates) a mask id table entry. These are released by the nfp_modify_flow_metadata call on flow deletion, however, if a flow add fails after metadata is set then the flow entry will be deleted but the metadata assignments leaked. Add an error path to the flow add offload function to ensure allocated metadata is released in the event of an offload fail. Fixes: 81f3ddf2547d ("nfp: add control message passing capabilities to flower offloads") Signed-off-by: John Hurley Reviewed-by: Pieter Jansen van Vuuren Reviewed-by: Jakub Kicinski Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/flower/offload.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/netronome/nfp/flower/offload.c b/drivers/net/ethernet/netronome/nfp/flower/offload.c index 29c95423ab64..c3ad8d737cf0 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/offload.c +++ b/drivers/net/ethernet/netronome/nfp/flower/offload.c @@ -479,13 +479,13 @@ nfp_flower_add_offload(struct nfp_app *app, struct net_device *netdev, err = nfp_flower_xmit_flow(netdev, flow_pay, NFP_FLOWER_CMSG_TYPE_FLOW_ADD); if (err) - goto err_destroy_flow; + goto err_release_metadata; flow_pay->tc_flower_cookie = flow->cookie; err = rhashtable_insert_fast(&priv->flow_table, &flow_pay->fl_node, nfp_flower_table_params); if (err) - goto err_destroy_flow; + goto err_release_metadata; port->tc_offload_cnt++; @@ -494,6 +494,8 @@ nfp_flower_add_offload(struct nfp_app *app, struct net_device *netdev, return 0; +err_release_metadata: + nfp_modify_flow_metadata(app, flow_pay); err_destroy_flow: kfree(flow_pay->action_data); kfree(flow_pay->mask_data); -- 2.30.2