[PATCH v2 1/2] random: initialize the random state for non-EAL threads

[Stephen Hemminger <stephen@networkplumber.org>]

The per-lcore PRNG was not initializing the rand_state of all
the lcores. Any usage of rte_random by a non-EAL lcore would
use rand_states[RTE_MAX_LCORE] which was never initialized.

Fix by using RTE_DIM() which will get all lcores.

Fixes: 3f002f069612 ("eal: replace libc-based random generation with LFSR")
Cc: mattias.ronnblom@ericsson.com
Acked-by: Morten Brørup <mb@smartsharesystems.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 lib/eal/common/rte_random.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/eal/common/rte_random.c b/lib/eal/common/rte_random.c
index 53636331a27b..812e5b4757b5 100644
--- a/lib/eal/common/rte_random.c
+++ b/lib/eal/common/rte_random.c
@@ -84,7 +84,7 @@ rte_srand(uint64_t seed)
 	unsigned int lcore_id;
 
 	/* add lcore_id to seed to avoid having the same sequence */
-	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++)
+	for (lcore_id = 0; lcore_id < RTE_DIM(rand_states); lcore_id++)
 		__rte_srand_lfsr258(seed + lcore_id, &rand_states[lcore_id]);
 }
 
-- 
2.39.2