[dpdk-dev] [PATCH 1/2] app/testpmd: fix scatter offload configuration

[Matan Azrad <matan@mellanox.com>]

When the mbuf data size cannot contain the maximum Rx packet length with
the mbuf headroom, a packet should be scattered in more than one mbuf.

The application did not configure scatter offload in the above case.

Enable the Rx scatter offload in the above case.

Fixes: 33f9630fc23d ("app/testpmd: create mbuf based on max supported segments")
Cc: stable@dpdk.org

Signed-off-by: Matan Azrad <matan@mellanox.com>
---
 app/test-pmd/testpmd.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 518865a..4ae70ef 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -1191,6 +1191,17 @@ struct extmem_param {
 				warning = 1;
 			}
 		}
+		if (rx_mode.max_rx_pkt_len + RTE_PKTMBUF_HEADROOM >
+		    mbuf_data_size) {
+			if (port->dev_info.rx_queue_offload_capa &
+			    DEV_RX_OFFLOAD_SCATTER)
+				port->dev_conf.rxmode.offloads |=
+						DEV_RX_OFFLOAD_SCATTER;
+			else
+				TESTPMD_LOG(WARNING, "Configure scatter is"
+					    " needed and cannot be configured"
+					    " in the port %u\n", pid);
+		}
 	}
 
 	if (warning)
-- 
1.8.3.1