[spp] [PATCH] spp_vf: fix unexpected tx port is shown in status

[x-fn-spp@sl.ntt-tx.co.jp]

From: Hideyuki Yamashita <yamashita.hideyuki@po.ntt-tx.co.jp>

Unexpected tx port is shown without adding it because of bug of status
command. Here is an example.

  spp > sec 1;component start fwd1 12 forward
  spp > sec 1;port add ring:0 rx fwd1
  spp > sec 1;flush
  spp > sec 1;status
  { "results": [ { "result": "success" } ],"info": { "client-id": 2,
  ...
  "tx_port": [ { "port": "phy:0", "vlan": { "operation": # Here
  ...

It is because status command wrongly assumes the number of tx port is
equal to rx if the number of rx port is greater than zero. To fix the
problem, add 'num_tx' in struct forward_path to hold the number exactly.

Signed-off-by: Hideyuki Yamashita <yamashita.hideyuki@po.ntt-tx.co.jp>
Signed-off-by: Naoki Takada <takada.naoki@lab.ntt.co.jp>
---
 src/vf/spp_forward.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/vf/spp_forward.c b/src/vf/spp_forward.c
index f8bd1d1..0a43608 100644
--- a/src/vf/spp_forward.c
+++ b/src/vf/spp_forward.c
@@ -21,7 +21,8 @@ struct forward_path {
 	char name[SPP_NAME_STR_LEN];    /* component name          */
 	volatile enum spp_component_type type;
 					/* component type          */
-	int num;                        /* number of receive ports */
+	int num_rx;                     /* number of receive ports */
+	int num_tx;                     /* number of trans ports   */
 	struct forward_rxtx ports[RTE_MAX_ETHPORTS];
 					/* port used for transfer  */
 };
@@ -93,7 +94,8 @@ spp_forward_update(struct spp_component_info *component)
 
 	memcpy(&path->name, component->name, SPP_NAME_STR_LEN);
 	path->type = component->type;
-	path->num = component->num_rx_port;
+	path->num_rx = component->num_rx_port;
+	path->num_tx = component->num_tx_port;
 	for (cnt = 0; cnt < num_rx; cnt++)
 		memcpy(&path->ports[cnt].rx, component->rx_ports[cnt],
 				sizeof(struct spp_port_info));
@@ -137,7 +139,7 @@ change_forward_index(int id)
 int
 spp_forward(int id)
 {
-	int cnt, num, buf;
+	int cnt, buf;
 	int nb_rx = 0;
 	int nb_tx = 0;
 	struct forward_info *info = &g_forward_info[id];
@@ -148,9 +150,8 @@ spp_forward(int id)
 
 	change_forward_index(id);
 	path = &info->path[info->ref_index];
-	num = path->num;
 
-	for (cnt = 0; cnt < num; cnt++) {
+	for (cnt = 0; cnt < path->num_rx; cnt++) {
 		rx = &path->ports[cnt].rx;
 		tx = &path->ports[cnt].tx;
 
@@ -179,7 +180,7 @@ spp_forward_get_component_status(
 		struct spp_iterate_core_params *params)
 {
 	int ret = -1;
-	int cnt, num_tx;
+	int cnt;
 	const char *component_type = NULL;
 	struct forward_info *info = &g_forward_info[id];
 	struct forward_path *path = &info->path[info->ref_index];
@@ -199,21 +200,22 @@ spp_forward_get_component_status(
 		component_type = SPP_TYPE_FORWARD_STR;
 
 	memset(rx_ports, 0x00, sizeof(rx_ports));
-	for (cnt = 0; cnt < path->num; cnt++) {
+	for (cnt = 0; cnt < path->num_rx; cnt++) {
 		rx_ports[cnt].iface_type = path->ports[cnt].rx.iface_type;
 		rx_ports[cnt].iface_no   = path->ports[cnt].rx.iface_no;
 	}
 
 	memset(tx_ports, 0x00, sizeof(tx_ports));
-	num_tx = (path->num > 0)?1:0;
-	tx_ports[0].iface_type = path->ports[0].tx.iface_type;
-	tx_ports[0].iface_no   = path->ports[0].tx.iface_no;
+	for (cnt = 0; cnt < path->num_tx; cnt++) {
+		tx_ports[cnt].iface_type = path->ports[cnt].tx.iface_type;
+		tx_ports[cnt].iface_no   = path->ports[cnt].tx.iface_no;
+	}
 
 	/* Set the information with the function specified by the command. */
 	ret = (*params->element_proc)(
 		params, lcore_id,
 		path->name, component_type,
-		path->num, rx_ports, num_tx, tx_ports);
+		path->num_rx, rx_ports, path->num_tx, tx_ports);
 	if (unlikely(ret != 0))
 		return -1;
 
-- 
2.18.0