ring: remove signed type flip-flopping

GCC 8.1 warns:

rte_ring.h:350:46:
warning: conversion to 'uint32_t' {aka 'unsigned int'}
from 'int' may change the sign of the result
[-Wsign-conversion]
  update_tail(&r->prod, prod_head, prod_next, is_sp, 1);

The visible apis take unsigned int, then call a private
api taking an int, which finally calls an api taking an
unsigned int.

Convert the private api to take unsigned int removing
5 x warning similar to that shown above.

Fixes: 0dfc98c507b1 ("ring: separate out head index manipulation")
Cc: stable@dpdk.org
Signed-off-by: Andy Green <andy@warmcat.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>

diff --git a/lib/librte_ring/rte_ring.h b/lib/librte_ring/rte_ring.h
index d3d3f7f..1245822 100644 (file)
--- a/lib/librte_ring/rte_ring.h
+++ b/lib/librte_ring/rte_ring.h
@@ -335,7 +335,7 @@ void rte_ring_dump(FILE *f, const struct rte_ring *r);
 static __rte_always_inline unsigned int
 __rte_ring_do_enqueue(struct rte_ring *r, void * const *obj_table,
                 unsigned int n, enum rte_ring_queue_behavior behavior,
-                int is_sp, unsigned int *free_space)
+                unsigned int is_sp, unsigned int *free_space)
 {
        uint32_t prod_head, prod_next;
        uint32_t free_entries;
@@ -377,7 +377,7 @@ end:
 static __rte_always_inline unsigned int
 __rte_ring_do_dequeue(struct rte_ring *r, void **obj_table,
                 unsigned int n, enum rte_ring_queue_behavior behavior,
-                int is_sc, unsigned int *available)
+                unsigned int is_sc, unsigned int *available)
 {
        uint32_t cons_head, cons_next;
        uint32_t entries;

diff --git a/lib/librte_ring/rte_ring_c11_mem.h b/lib/librte_ring/rte_ring_c11_mem.h
index 08825ea..cb3f82b 100644 (file)
--- a/lib/librte_ring/rte_ring_c11_mem.h
+++ b/lib/librte_ring/rte_ring_c11_mem.h
@@ -51,7 +51,7 @@ update_tail(struct rte_ring_headtail *ht, uint32_t old_val, uint32_t new_val,
  *   If behavior == RTE_RING_QUEUE_FIXED, this will be 0 or n only.
  */
 static __rte_always_inline unsigned int
-__rte_ring_move_prod_head(struct rte_ring *r, int is_sp,
+__rte_ring_move_prod_head(struct rte_ring *r, unsigned int is_sp,
                unsigned int n, enum rte_ring_queue_behavior behavior,
                uint32_t *old_head, uint32_t *new_head,
                uint32_t *free_entries)

diff --git a/lib/librte_ring/rte_ring_generic.h b/lib/librte_ring/rte_ring_generic.h
index c2d482b..ea7dbe5 100644 (file)
--- a/lib/librte_ring/rte_ring_generic.h
+++ b/lib/librte_ring/rte_ring_generic.h
@@ -53,7 +53,7 @@ update_tail(struct rte_ring_headtail *ht, uint32_t old_val, uint32_t new_val,
  *   If behavior == RTE_RING_QUEUE_FIXED, this will be 0 or n only.
  */
 static __rte_always_inline unsigned int
-__rte_ring_move_prod_head(struct rte_ring *r, int is_sp,
+__rte_ring_move_prod_head(struct rte_ring *r, unsigned int is_sp,
                unsigned int n, enum rte_ring_queue_behavior behavior,
                uint32_t *old_head, uint32_t *new_head,
                uint32_t *free_entries)
@@ -123,7 +123,7 @@ __rte_ring_move_prod_head(struct rte_ring *r, int is_sp,
  *     If behavior == RTE_RING_QUEUE_FIXED, this will be 0 or n only.
  */
 static __rte_always_inline unsigned int
-__rte_ring_move_cons_head(struct rte_ring *r, int is_sc,
+__rte_ring_move_cons_head(struct rte_ring *r, unsigned int is_sc,
                unsigned int n, enum rte_ring_queue_behavior behavior,
                uint32_t *old_head, uint32_t *new_head,
                uint32_t *entries)