diff mbox series

[v3] lpm: skip table entries update if rules found

Message ID 20200417172614.7559-1-zhouyates@gmail.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers
Series [v3] lpm: skip table entries update if rules found |

Checks

Context Check Description
ci/checkpatch warning coding style issues
ci/iol-nxp-Performance success Performance Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-testing fail Testing issues
ci/Intel-compilation success Compilation OK

Commit Message

Matt April 17, 2020, 5:26 p.m. UTC 
  Table entries do not need to be updated if the same rules can be found.

Signed-off-by: Yangchao Zhou <zhouyates@gmail.com>
---
 lib/librte_lpm/rte_lpm.c | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/lib/librte_lpm/rte_lpm.c b/lib/librte_lpm/rte_lpm.c
index 268756419..9085f935e 100644
--- a/lib/librte_lpm/rte_lpm.c
+++ b/lib/librte_lpm/rte_lpm.c
@@ -285,6 +285,9 @@  rule_add(struct rte_lpm *lpm, uint32_t ip_masked, uint8_t depth,
 
 			/* If rule already exists update its next_hop and return. */
 			if (lpm->rules_tbl[rule_index].ip == ip_masked) {
+
+				if (lpm->rules_tbl[rule_index].next_hop == next_hop)
+					return -EEXIST;
 				lpm->rules_tbl[rule_index].next_hop = next_hop;
 
 				return rule_index;
@@ -674,6 +677,12 @@  rte_lpm_add(struct rte_lpm *lpm, uint32_t ip, uint8_t depth,
 	/* Add the rule to the rule table. */
 	rule_index = rule_add(lpm, ip_masked, depth, next_hop);
 
+	/* Skip table entries update if The rule is the same as
+	 * the rule in the rules table.
+	*/
+	if (rule_index == -EEXIST)
+		return 0;
+
 	/* If the is no space available for new rule return error. */
 	if (rule_index < 0) {
 		return rule_index;