[dpdk-dev] [PATCH] lib/table: fix wrong type of nht field

Michal Jastrzebski michalx.k.jastrzebski at intel.com
Mon Jun 20 12:10:24 CEST 2016


From: Michal Kobylinski <michalx.kobylinski at intel.com>

Change type of nht field from uint32_t to uint8_t and increase max of
next hops.

Fixes: dc81ebbacaeb ("lpm: extend IPv4 next hop field")

Signed-off-by: Michal Kobylinski <michalx.kobylinski at intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu at intel.com>
---
 examples/ip_pipeline/pipeline/pipeline_routing_be.h | 2 +-
 lib/librte_table/rte_table_lpm.c                    | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/examples/ip_pipeline/pipeline/pipeline_routing_be.h b/examples/ip_pipeline/pipeline/pipeline_routing_be.h
index 1276342..ea50896 100644
--- a/examples/ip_pipeline/pipeline/pipeline_routing_be.h
+++ b/examples/ip_pipeline/pipeline/pipeline_routing_be.h
@@ -42,7 +42,7 @@
  * Pipeline argument parsing
  */
 #ifndef PIPELINE_ROUTING_N_ROUTES_DEFAULT
-#define PIPELINE_ROUTING_N_ROUTES_DEFAULT                  4096
+#define PIPELINE_ROUTING_N_ROUTES_DEFAULT                  65536
 #endif
 
 enum pipeline_routing_encap {
diff --git a/lib/librte_table/rte_table_lpm.c b/lib/librte_table/rte_table_lpm.c
index cdeb0f5..f2eaed5 100644
--- a/lib/librte_table/rte_table_lpm.c
+++ b/lib/librte_table/rte_table_lpm.c
@@ -44,7 +44,7 @@
 
 #include "rte_table_lpm.h"
 
-#define RTE_TABLE_LPM_MAX_NEXT_HOPS                        256
+#define RTE_TABLE_LPM_MAX_NEXT_HOPS                        65536
 
 #ifdef RTE_TABLE_STATS_COLLECT
 
@@ -74,7 +74,7 @@ struct rte_table_lpm {
 
 	/* Next Hop Table (NHT) */
 	uint32_t nht_users[RTE_TABLE_LPM_MAX_NEXT_HOPS];
-	uint32_t nht[0] __rte_cache_aligned;
+	uint8_t nht[0] __rte_cache_aligned;
 };
 
 static void *
@@ -188,7 +188,7 @@ nht_find_existing(struct rte_table_lpm *lpm, void *entry, uint32_t *pos)
 	uint32_t i;
 
 	for (i = 0; i < RTE_TABLE_LPM_MAX_NEXT_HOPS; i++) {
-		uint32_t *nht_entry = &lpm->nht[i * lpm->entry_size];
+		uint8_t *nht_entry = &lpm->nht[i * lpm->entry_size];
 
 		if ((lpm->nht_users[i] > 0) && (memcmp(nht_entry, entry,
 			lpm->entry_unique_size) == 0)) {
@@ -242,7 +242,7 @@ rte_table_lpm_entry_add(
 
 	/* Find existing or free NHT entry */
 	if (nht_find_existing(lpm, entry, &nht_pos) == 0) {
-		uint32_t *nht_entry;
+		uint8_t *nht_entry;
 
 		if (nht_find_free(lpm, &nht_pos) == 0) {
 			RTE_LOG(ERR, TABLE, "%s: NHT full\n", __func__);
-- 
1.9.1



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