ethdev: make parameters to TM profile add fn constant

The function to add a new profile in rte_tm should not (and does not)
modify the profile parameters passed in via struct pointer. We should
guarantee this by marking the parameter pointer as const.  This allows
SW to create multiple profiles using the same parameter struct without
having to reset it each time.

Signed-off-by: Bruce Richardson <[email protected]>
Reviewed-by: Rosen Xu <[email protected]>
Acked-by: Ferruh Yigit <[email protected]>
Acked-by: Stephen Hemminger <[email protected]>

Author: bruce-richardson

drivers/net/ipn3ke/ipn3ke_tm.c

@@ -848,7 +848,7 @@ ipn3ke_tm_shaper_profile_delete(struct rte_eth_dev *dev,
 
 static int
 ipn3ke_tm_tdrop_profile_check(__rte_unused struct rte_eth_dev *dev,
-	uint32_t tdrop_profile_id, struct rte_tm_wred_params *profile,
+	uint32_t tdrop_profile_id, const struct rte_tm_wred_params *profile,
 	struct rte_tm_error *error)
 {
 	enum rte_color color;
@@ -931,7 +931,7 @@ ipn3ke_hw_tm_tdrop_wr(struct ipn3ke_hw *hw,
 /* Traffic manager TDROP profile add */
 static int
 ipn3ke_tm_tdrop_profile_add(struct rte_eth_dev *dev,
-	uint32_t tdrop_profile_id, struct rte_tm_wred_params *profile,
+	uint32_t tdrop_profile_id, const struct rte_tm_wred_params *profile,
 	struct rte_tm_error *error)
 {
 	struct ipn3ke_hw *hw = IPN3KE_DEV_PRIVATE_TO_HW(dev);

lib/ethdev/rte_tm.c

@@ -153,7 +153,7 @@ int rte_tm_node_capabilities_get(uint16_t port_id,
 /* Add WRED profile */
 int rte_tm_wred_profile_add(uint16_t port_id,
 	uint32_t wred_profile_id,
-	struct rte_tm_wred_params *profile,
+	const struct rte_tm_wred_params *profile,
 	struct rte_tm_error *error)
 {
 	struct rte_eth_dev *dev = &rte_eth_devices[port_id];

lib/ethdev/rte_tm.h

@@ -1347,7 +1347,7 @@ rte_tm_node_capabilities_get(uint16_t port_id,
 int
 rte_tm_wred_profile_add(uint16_t port_id,
 	uint32_t wred_profile_id,
-	struct rte_tm_wred_params *profile,
+	const struct rte_tm_wred_params *profile,
 	struct rte_tm_error *error);
 
 /**

lib/ethdev/rte_tm_driver.h

@@ -51,7 +51,7 @@ typedef int (*rte_tm_node_capabilities_get_t)(struct rte_eth_dev *dev,
 /** @internal Traffic manager WRED profile add */
 typedef int (*rte_tm_wred_profile_add_t)(struct rte_eth_dev *dev,
 	uint32_t wred_profile_id,
-	struct rte_tm_wred_params *profile,
+	const struct rte_tm_wred_params *profile,
 	struct rte_tm_error *error);
 
 /** @internal Traffic manager WRED profile delete */