examples/ip_pipeline: remove check of null response

For sending request messages to data plane threads, the
caller invokes *_msg_send_recv() functions which never
return null response. Thus, removed redundant check on
the returned response.

Coverity issue: 357750, 357740, 357749, 357758, 357702, 357736
Coverity issue: 357679, 357791, 357738, 357778, 357716, 357705
Coverity issue: 357776, 357753, 357729, 357735, 357773, 357723
Fixes: 32e5d9b154cb ("examples/ip_pipeline: add enable and disable commands")
Fixes: 50e73d051806 ("examples/ip_pipeline: add stats read commands")
Fixes: 6b1b3c3c9d30 ("examples/ip_pipeline: add port enable and disable commands")
Fixes: a3a95b7d58b9 ("examples/ip_pipeline: add table entry commands")
Fixes: 3186282f8e12 ("examples/ip_pipeline: add table bulk add command")
Fixes: f634e4c5698a ("examples/ip_pipeline: add table entry delete command")
Fixes: c64b9121a963 ("examples/ip_pipeline: add table entry stats command")
Fixes: 7e11393e40ef ("examples/ip_pipeline: add meter profile commands")
Fixes: e92058d604e6 ("examples/ip_pipeline: add meter stats command")
Fixes: 2b82ef4861c0 ("examples/ip_pipeline: add DSCP table update command")
Fixes: d0d306c7f2a1 ("examples/ip_pipeline: add TTL stats command")
Fixes: a3169ee5ec59 ("examples/ip_pipeline: support rule time read")
Cc: stable@dpdk.org
Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>

diff --git a/examples/ip_pipeline/thread.c b/examples/ip_pipeline/thread.c
index 272fbbe..adb8316 100644 (file)
--- a/examples/ip_pipeline/thread.c
+++ b/examples/ip_pipeline/thread.c
@@ -325,8 +325,6 @@ thread_pipeline_enable(uint32_t thread_id,
 
        /* Send request and wait for response */
        rsp = thread_msg_send_recv(thread_id, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -412,8 +410,6 @@ thread_pipeline_disable(uint32_t thread_id,
 
        /* Send request and wait for response */
        rsp = thread_msg_send_recv(thread_id, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -815,8 +811,6 @@ pipeline_port_in_stats_read(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -863,8 +857,6 @@ pipeline_port_in_enable(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -909,8 +901,6 @@ pipeline_port_in_disable(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -963,8 +953,6 @@ pipeline_port_out_stats_read(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -1019,8 +1007,6 @@ pipeline_table_stats_read(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -1436,10 +1422,6 @@ pipeline_table_rule_add(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL) {
-               free(rule);
-               return -1;
-       }
 
        /* Read response */
        status = rsp->status;
@@ -1538,10 +1520,6 @@ pipeline_table_rule_add_default(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL) {
-               free(rule);
-               return -1;
-       }
 
        /* Read response */
        status = rsp->status;
@@ -1655,10 +1633,6 @@ pipeline_table_rule_add_bulk(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL) {
-               table_rule_list_free(list);
-               return -ENOMEM;
-       }
 
        /* Read response */
        status = rsp->status;
@@ -1733,8 +1707,6 @@ pipeline_table_rule_delete(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -1790,8 +1762,6 @@ pipeline_table_rule_delete_default(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -1857,8 +1827,6 @@ pipeline_table_rule_stats_read(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -1915,8 +1883,6 @@ pipeline_table_mtr_profile_add(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -1967,8 +1933,6 @@ pipeline_table_mtr_profile_delete(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -2037,8 +2001,6 @@ pipeline_table_rule_mtr_read(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -2096,8 +2058,6 @@ pipeline_table_dscp_table_update(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -2164,8 +2124,6 @@ pipeline_table_rule_ttl_read(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;
@@ -2229,8 +2187,6 @@ pipeline_table_rule_time_read(const char *pipeline_name,
 
        /* Send request and wait for response */
        rsp = pipeline_msg_send_recv(p, req);
-       if (rsp == NULL)
-               return -1;
 
        /* Read response */
        status = rsp->status;