[PATCH v3 4/7] examples/ipsec-secgw: allow larger burst size for vectors

[Nithin Dabilpuram]

Allow larger burst size of vector event mode instead of restricting
to 32. Also restructure traffic type struct to have num pkts first
so that it is always in first cacheline. Also cache align
traffic type struct. Since MAX_PKT_BURST is not used by
vector event mode worker, define another macro for its burst
size so that poll mode perf is not effected.

Signed-off-by: Nithin Dabilpuram <ndabilpu...@marvell.com>
---
 examples/ipsec-secgw/ipsec-secgw.c |  2 +-
 examples/ipsec-secgw/ipsec-secgw.h | 15 ++++++++++-----
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/examples/ipsec-secgw/ipsec-secgw.c 
b/examples/ipsec-secgw/ipsec-secgw.c
index d6a4959..88984a6 100644
--- a/examples/ipsec-secgw/ipsec-secgw.c
+++ b/examples/ipsec-secgw/ipsec-secgw.c
@@ -1317,7 +1317,7 @@ parse_args(int32_t argc, char **argv, struct eh_conf 
*eh_conf)
                case CMD_LINE_OPT_VECTOR_SIZE_NUM:
                        ret = parse_decimal(optarg);
 
-                       if (ret > MAX_PKT_BURST) {
+                       if (ret > MAX_PKT_BURST_VEC) {
                                printf("Invalid argument for \'%s\': %s\n",
                                        CMD_LINE_OPT_VECTOR_SIZE, optarg);
                                print_usage(prgname);
diff --git a/examples/ipsec-secgw/ipsec-secgw.h 
b/examples/ipsec-secgw/ipsec-secgw.h
index fceb835..2edf631 100644
--- a/examples/ipsec-secgw/ipsec-secgw.h
+++ b/examples/ipsec-secgw/ipsec-secgw.h
@@ -11,6 +11,11 @@
 #define NB_SOCKETS 4
 
 #define MAX_PKT_BURST 32
+#define MAX_PKT_BURST_VEC 256
+
+#define MAX_PKTS                                  \
+       ((MAX_PKT_BURST_VEC > MAX_PKT_BURST ?     \
+         MAX_PKT_BURST_VEC : MAX_PKT_BURST) * 2)
 
 #define RTE_LOGTYPE_IPSEC RTE_LOGTYPE_USER1
 
@@ -49,12 +54,12 @@
 #define MBUF_PTYPE_TUNNEL_ESP_IN_UDP (RTE_PTYPE_TUNNEL_ESP | RTE_PTYPE_L4_UDP)
 
 struct traffic_type {
-       const uint8_t *data[MAX_PKT_BURST * 2];
-       struct rte_mbuf *pkts[MAX_PKT_BURST * 2];
-       void *saptr[MAX_PKT_BURST * 2];
-       uint32_t res[MAX_PKT_BURST * 2];
        uint32_t num;
-};
+       struct rte_mbuf *pkts[MAX_PKTS];
+       const uint8_t *data[MAX_PKTS];
+       void *saptr[MAX_PKTS];
+       uint32_t res[MAX_PKTS];
+} __rte_cache_aligned;
 
 struct ipsec_traffic {
        struct traffic_type ipsec;
-- 
2.8.4