l4p: add ability to assign user-data to the stream

Add ability for the user to assign user provided data to the stream.
Right now this user provided 64-bit value is passed as a parameter
for lookup4/lookup6 callbacks.
Another change: change interpretation of lookup4()/lookup6() return value:
<  0: error code (existing behaviour).
== 0: success, TLDK will update L3 header src/dst addresses based on
      tldk dev values (existing behaviour).
>  0: success, TLDK will not update L3 header src/dst addresses, will
      rely on user provided values.

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Change-Id: I32521422e0372d79c4b2781dd6fc9740e4ca93ab

1 files changed, 4 insertions, 4 deletions

diff --git a/examples/l4fwd/lcore.h b/examples/l4fwd/lcore.h
index ac2fbbd..8d69c4f 100644
--- a/examples/l4fwd/lcore.h
+++ b/examples/l4fwd/lcore.h
@@ -24,8 +24,8 @@
  * IPv4 destination lookup callback.
  */
 static int
-lpm4_dst_lookup(void *data, const struct in_addr *addr,
-	struct tle_dest *res)
+lpm4_dst_lookup(void *data, __rte_unused uint64_t sdata,
+	const struct in_addr *addr, struct tle_dest *res)
 {
 	int32_t rc;
 	uint32_t idx;
@@ -47,8 +47,8 @@ lpm4_dst_lookup(void *data, const struct in_addr *addr,
  * IPv6 destination lookup callback.
  */
 static int
-lpm6_dst_lookup(void *data, const struct in6_addr *addr,
-	struct tle_dest *res)
+lpm6_dst_lookup(void *data, __rte_unused uint64_t sdata,
+	const struct in6_addr *addr, struct tle_dest *res)
 {
 	int32_t rc;
 	dpdk_lpm6_idx_t idx;