When using rte_mempool_create(), the mempool handler is selected
depending on the flags given by the user:
- multi-consumer / multi-producer
- multi-consumer / single-producer
- single-consumer / multi-producer
- single-consumer / single-producer
The flags were not properly tested, resulting in the selection of sc/sp
handler if sc/mp or mc/sp was asked. This can lead to corruption or
crashes because the get/put operations are not atomic.
Fixes: 449c49b93a6b ("mempool: support handler operations")
Signed-off-by: Weiliang Luo <droidluo at gmail.com>
Acked-by: Olivier Matz <olivier.matz at 6wind.com>
---
lib/librte_mempool/rte_mempool.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
index 2e28e2e..350d77a 100644
--- a/lib/librte_mempool/rte_mempool.c
+++ b/lib/librte_mempool/rte_mempool.c
@@ -879,7 +879,7 @@ rte_mempool_create(const char *name, unsigned n, unsigned
elt_size,
* Since we have 4 combinations of the SP/SC/MP/MC examine the flags to
* set the correct index into the table of ops structs.
*/
- if (flags & (MEMPOOL_F_SP_PUT | MEMPOOL_F_SC_GET))
+ if ((flags & MEMPOOL_F_SP_PUT) && (flags & MEMPOOL_F_SC_GET))
rte_mempool_set_ops_byname(mp, "ring_sp_sc", NULL);
else if (flags & MEMPOOL_F_SP_PUT)
rte_mempool_set_ops_byname(mp, "ring_sp_mc", NULL);
--
2.7.4 (Apple Git-66)
