lpm: fix index of tbl8

From v20 to v1604, number of tbl8 can be up to 1<<24,
(uint8_t) or (uint16_t) may truncate the number of
index of tlb8 in v1604 and cause wrong number.

Fixes: dc81ebbacaeb ("lpm: extend IPv4 next hop field")
Cc: stable@dpdk.org
Signed-off-by: Wei Dai <wei.dai@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

diff --git a/lib/librte_lpm/rte_lpm.c b/lib/librte_lpm/rte_lpm.c
index 8c15c4c..978ac60 100644 (file)
--- a/lib/librte_lpm/rte_lpm.c
+++ b/lib/librte_lpm/rte_lpm.c
@@ -1034,7 +1034,7 @@ add_depth_big_v1604(struct rte_lpm *lpm, uint32_t ip_masked, uint8_t depth,
                 */
 
                struct rte_lpm_tbl_entry new_tbl24_entry = {
-                       .group_idx = (uint8_t)tbl8_group_index,
+                       .group_idx = tbl8_group_index,
                        .valid = VALID,
                        .valid_group = 1,
                        .depth = 0,
@@ -1080,7 +1080,7 @@ add_depth_big_v1604(struct rte_lpm *lpm, uint32_t ip_masked, uint8_t depth,
                 */
 
                struct rte_lpm_tbl_entry new_tbl24_entry = {
-                               .group_idx = (uint8_t)tbl8_group_index,
+                               .group_idx = tbl8_group_index,
                                .valid = VALID,
                                .valid_group = 1,
                                .depth = 0,