[dpdk-dev] [PATCH 2/3] app/testpmd: enable UDP GSO in the checksum forwarding engine

[Jiayu Hu <jiayu.hu@intel.com>]

This patch enables GSO for UDP/IPv4 packets. Oversized UDP/IPv4
packets transmitted over a GSO-enabled port will undergo segmentation.

Signed-off-by: Jiayu Hu <jiayu.hu@intel.com>
---
 app/test-pmd/cmdline.c  | 5 +++--
 app/test-pmd/csumonly.c | 2 ++
 app/test-pmd/testpmd.c  | 2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 27e2aa8..4239e91 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -4792,8 +4792,9 @@ cmd_gso_show_parsed(void *parsed_result,
 		if (gso_ports[res->cmd_pid].enable) {
 			printf("Max GSO'd packet size: %uB\n"
 					"Supported GSO types: TCP/IPv4, "
-					"VxLAN with inner TCP/IPv4 packet, "
-					"GRE with inner TCP/IPv4  packet\n",
+					"UDP/IPv4, VxLAN with inner "
+					"TCP/IPv4 packet, GRE with inner "
+					"TCP/IPv4 packet\n",
 					gso_max_segment_size);
 		} else
 			printf("GSO is not enabled on Port %u\n", res->cmd_pid);
diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
index 0bb88cf..4948292 100644
--- a/app/test-pmd/csumonly.c
+++ b/app/test-pmd/csumonly.c
@@ -411,6 +411,8 @@ process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
 						info->ethertype);
 			}
 		}
+		if (info->gso_enable)
+			ol_flags |= PKT_TX_UDP_SEG;
 	} else if (info->l4_proto == IPPROTO_TCP) {
 		tcp_hdr = (struct tcp_hdr *)((char *)l3_hdr + info->l3_len);
 		tcp_hdr->cksum = 0;
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 35cf266..b5766ff 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -777,7 +777,7 @@ init_config(void)
 	init_port_config();
 
 	gso_types = DEV_TX_OFFLOAD_TCP_TSO | DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
-		DEV_TX_OFFLOAD_GRE_TNL_TSO;
+		DEV_TX_OFFLOAD_GRE_TNL_TSO | DEV_TX_OFFLOAD_UDP_TSO;
 	/*
 	 * Records which Mbuf pool to use by each logical core, if needed.
 	 */
-- 
2.7.4