[dpdk-dev] [PATCH v4 5/8] test app: adding support for generating variable sized packet bursts

[Declan Doherty <declan.doherty@intel.com>]

Signed-off-by: Declan Doherty <declan.doherty@intel.com>
---
 app/test/packet_burst_generator.c | 25 ++++++++-----------------
 app/test/packet_burst_generator.h |  6 +++++-
 app/test/test_link_bonding.c      | 14 +++++++++-----
 3 files changed, 22 insertions(+), 23 deletions(-)

diff --git a/app/test/packet_burst_generator.c b/app/test/packet_burst_generator.c
index 9e747a4..b2824dc 100644
--- a/app/test/packet_burst_generator.c
+++ b/app/test/packet_burst_generator.c
@@ -74,8 +74,7 @@ static inline void
 copy_buf_to_pkt(void *buf, unsigned len, struct rte_mbuf *pkt, unsigned offset)
 {
 	if (offset + len <= pkt->data_len) {
-		rte_memcpy(rte_pktmbuf_mtod(pkt, char *) + offset,
-				buf, (size_t) len);
+		rte_memcpy(rte_pktmbuf_mtod(pkt, char *) + offset, buf, (size_t) len);
 		return;
 	}
 	copy_buf_to_pkt_segs(buf, len, pkt, offset);
@@ -191,20 +190,12 @@ initialize_ipv4_header(struct ipv4_hdr *ip_hdr, uint32_t src_addr,
  */
 #define RTE_MAX_SEGS_PER_PKT 255 /**< pkt.nb_segs is a 8-bit unsigned char. */
 
-#define TXONLY_DEF_PACKET_LEN 64
-#define TXONLY_DEF_PACKET_LEN_128 128
-
-uint16_t tx_pkt_length = TXONLY_DEF_PACKET_LEN;
-uint16_t tx_pkt_seg_lengths[RTE_MAX_SEGS_PER_PKT] = {
-		TXONLY_DEF_PACKET_LEN_128,
-};
-
-uint8_t  tx_pkt_nb_segs = 1;
 
 int
 generate_packet_burst(struct rte_mempool *mp, struct rte_mbuf **pkts_burst,
 		struct ether_hdr *eth_hdr, uint8_t vlan_enabled, void *ip_hdr,
-		uint8_t ipv4, struct udp_hdr *udp_hdr, int nb_pkt_per_burst)
+		uint8_t ipv4, struct udp_hdr *udp_hdr, int nb_pkt_per_burst,
+		uint8_t pkt_len, uint8_t nb_pkt_segs)
 {
 	int i, nb_pkt = 0;
 	size_t eth_hdr_size;
@@ -221,9 +212,9 @@ nomore_mbuf:
 			break;
 		}
 
-		pkt->data_len = tx_pkt_seg_lengths[0];
+		pkt->data_len = pkt_len;
 		pkt_seg = pkt;
-		for (i = 1; i < tx_pkt_nb_segs; i++) {
+		for (i = 1; i < nb_pkt_segs; i++) {
 			pkt_seg->next = rte_pktmbuf_alloc(mp);
 			if (pkt_seg->next == NULL) {
 				pkt->nb_segs = i;
@@ -231,7 +222,7 @@ nomore_mbuf:
 				goto nomore_mbuf;
 			}
 			pkt_seg = pkt_seg->next;
-			pkt_seg->data_len = tx_pkt_seg_lengths[i];
+			pkt_seg->data_len = pkt_len;
 		}
 		pkt_seg->next = NULL; /* Last segment of packet. */
 
@@ -259,8 +250,8 @@ nomore_mbuf:
 		 * Complete first mbuf of packet and append it to the
 		 * burst of packets to be transmitted.
 		 */
-		pkt->nb_segs = tx_pkt_nb_segs;
-		pkt->pkt_len = tx_pkt_length;
+		pkt->nb_segs = nb_pkt_segs;
+		pkt->pkt_len = pkt_len;
 		pkt->l2_len = eth_hdr_size;
 
 		if (ipv4) {
diff --git a/app/test/packet_burst_generator.h b/app/test/packet_burst_generator.h
index 5b3cd6c..f86589e 100644
--- a/app/test/packet_burst_generator.h
+++ b/app/test/packet_burst_generator.h
@@ -47,6 +47,9 @@ extern "C" {
 #define IPV4_ADDR(a, b, c, d)(((a & 0xff) << 24) | ((b & 0xff) << 16) | \
 		((c & 0xff) << 8) | (d & 0xff))
 
+#define PACKET_BURST_GEN_PKT_LEN 60
+#define PACKET_BURST_GEN_PKT_LEN_128 128
+
 
 void
 initialize_eth_header(struct ether_hdr *eth_hdr, struct ether_addr *src_mac,
@@ -68,7 +71,8 @@ initialize_ipv4_header(struct ipv4_hdr *ip_hdr, uint32_t src_addr,
 int
 generate_packet_burst(struct rte_mempool *mp, struct rte_mbuf **pkts_burst,
 		struct ether_hdr *eth_hdr, uint8_t vlan_enabled, void *ip_hdr,
-		uint8_t ipv4, struct udp_hdr *udp_hdr, int nb_pkt_per_burst);
+		uint8_t ipv4, struct udp_hdr *udp_hdr, int nb_pkt_per_burst,
+		uint8_t pkt_len, uint8_t nb_pkt_segs);
 
 #ifdef __cplusplus
 }
diff --git a/app/test/test_link_bonding.c b/app/test/test_link_bonding.c
index 1a847eb..50355a3 100644
--- a/app/test/test_link_bonding.c
+++ b/app/test/test_link_bonding.c
@@ -1338,7 +1338,8 @@ generate_test_burst(struct rte_mbuf **pkts_burst, uint16_t burst_size,
 	/* Generate burst of packets to transmit */
 	generated_burst_size = generate_packet_burst(test_params->mbuf_pool,
 			pkts_burst,	test_params->pkt_eth_hdr, vlan, ip_hdr, ipv4,
-			test_params->pkt_udp_hdr, burst_size);
+			test_params->pkt_udp_hdr, burst_size, PACKET_BURST_GEN_PKT_LEN_128,
+			1);
 	if (generated_burst_size != burst_size) {
 		printf("Failed to generate packet burst");
 		return -1;
@@ -2056,7 +2057,7 @@ test_activebackup_tx_burst(void)
 	/* Generate a burst of packets to transmit */
 	generated_burst_size = generate_packet_burst(test_params->mbuf_pool,
 			pkts_burst,	test_params->pkt_eth_hdr, 0, test_params->pkt_ipv4_hdr,
-			1, test_params->pkt_udp_hdr, burst_size);
+			1, test_params->pkt_udp_hdr, burst_size, PACKET_BURST_GEN_PKT_LEN, 1);
 	if (generated_burst_size != burst_size)
 		return -1;
 
@@ -2709,7 +2710,8 @@ test_balance_l2_tx_burst(void)
 	/* Generate a burst 1 of packets to transmit */
 	if (generate_packet_burst(test_params->mbuf_pool, &pkts_burst[0][0],
 			test_params->pkt_eth_hdr, 0, test_params->pkt_ipv4_hdr, 1,
-			test_params->pkt_udp_hdr, burst_size[0]) != burst_size[0])
+			test_params->pkt_udp_hdr, burst_size[0],
+			PACKET_BURST_GEN_PKT_LEN, 1) != burst_size[0])
 		return -1;
 
 	initialize_eth_header(test_params->pkt_eth_hdr,
@@ -2718,7 +2720,8 @@ test_balance_l2_tx_burst(void)
 	/* Generate a burst 2 of packets to transmit */
 	if (generate_packet_burst(test_params->mbuf_pool, &pkts_burst[1][0],
 			test_params->pkt_eth_hdr, 0, test_params->pkt_ipv4_hdr, 1,
-			test_params->pkt_udp_hdr, burst_size[1]) != burst_size[1])
+			test_params->pkt_udp_hdr, burst_size[1],
+			PACKET_BURST_GEN_PKT_LEN, 1) != burst_size[1])
 		return -1;
 
 	/* Send burst 1 on bonded port */
@@ -3672,7 +3675,8 @@ test_broadcast_tx_burst(void)
 	/* Generate a burst of packets to transmit */
 	generated_burst_size = generate_packet_burst(test_params->mbuf_pool,
 			pkts_burst,	test_params->pkt_eth_hdr, 0, test_params->pkt_ipv4_hdr,
-			1, test_params->pkt_udp_hdr, burst_size);
+			1, test_params->pkt_udp_hdr, burst_size, PACKET_BURST_GEN_PKT_LEN,
+			1);
 	if (generated_burst_size != burst_size)
 		return -1;
 
-- 
1.7.12.2