[dpdk-dev] [PATCH] net/iavf: fix rte flow error log issue

[Jeff Guo]

When processing a rte flow, such as creating a parse engine, or
creating or destroying a rss rule, if they are failed, they all
need to construct the flow error structure before return the error
message back to app. If not so, it will cause app crash when
app printing the message out of a flow error.

Fixes: 7be10c3004be ("net/iavf: add RSS configuration for VF")
Fixes: ff2d0c345c3b ("net/iavf: support generic flow API")
Signed-off-by: Jeff Guo <jia....@intel.com>
---
 drivers/net/iavf/iavf_generic_flow.c | 10 +++++++---
 drivers/net/iavf/iavf_hash.c         | 12 ++++++++++--
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/net/iavf/iavf_generic_flow.c 
b/drivers/net/iavf/iavf_generic_flow.c
index bca1ffeb3..64695f246 100644
--- a/drivers/net/iavf/iavf_generic_flow.c
+++ b/drivers/net/iavf/iavf_generic_flow.c
@@ -868,14 +868,18 @@ iavf_flow_process_filter(struct rte_eth_dev *dev,
 
        *engine = iavf_parse_engine(ad, flow, &vf->rss_parser_list, pattern,
                                    actions, error);
-       if (*engine != NULL)
+       if (*engine)
                return 0;
 
        *engine = iavf_parse_engine(ad, flow, &vf->dist_parser_list, pattern,
                                    actions, error);
 
-       if (*engine == NULL)
-               return -EINVAL;
+       if (!*engine) {
+               rte_flow_error_set(error, EINVAL,
+                                  RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
+                                  "Failed to create parser engine.");
+               return -rte_errno;
+       }
 
        return 0;
 }
diff --git a/drivers/net/iavf/iavf_hash.c b/drivers/net/iavf/iavf_hash.c
index 97370aa19..8263a663b 100644
--- a/drivers/net/iavf/iavf_hash.c
+++ b/drivers/net/iavf/iavf_hash.c
@@ -1111,7 +1111,11 @@ iavf_hash_create(__rte_unused struct iavf_adapter *ad,
                flow->rule = rss_cfg;
        } else {
                PMD_DRV_LOG(ERR, "fail to add RSS configure");
+               rte_flow_error_set(error, -ret,
+                                  RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
+                                  "Failed to add rss rule.");
                rte_free(rss_cfg);
+               return -rte_errno;
        }
 
        rte_free(meta);
@@ -1130,9 +1134,13 @@ iavf_hash_destroy(__rte_unused struct iavf_adapter *ad,
        rss_cfg = (struct virtchnl_rss_cfg *)flow->rule;
 
        ret = iavf_add_del_rss_cfg(ad, rss_cfg, false);
-       if (ret)
+       if (ret) {
                PMD_DRV_LOG(ERR, "fail to del RSS configure");
-
+               rte_flow_error_set(error, -ret,
+                                  RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
+                                  "Failed to delete rss rule.");
+               return -rte_errno;
+       }
        return ret;
 }
 
-- 
2.20.1