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From: Michal Krawczyk <mk@semihalf.com>
To: dev@dpdk.org
Cc: gtzalik@amazon.com, mw@semihalf.com, matua@amazon.com, mba@semihalf.com,
igorch@amazon.com, Michal Krawczyk <mk@semihalf.com>
Date: Fri, 13 Dec 2019 14:32:16 +0100
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Subject: [dpdk-dev] [PATCH 2/2] net/ena: add support for RX_OFFSET feature
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From: Maciej Bielski <mba@semihalf.com>
Allow the data in the first buffer to be shifted by `pkt_offset` after
the header room. The offset value is provided by `ena_rx_ctx`.
As part of this update, the version of the ENA was upgraded to v2.0.3.
Signed-off-by: Maciej Bielski <mba@semihalf.com>
Acked-by: Michal Krawczyk <mk@semihalf.com>
---
drivers/net/ena/ena_ethdev.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index f32963558..665afee4f 100644
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -27,7 +27,7 @@
#define DRV_MODULE_VER_MAJOR 2
#define DRV_MODULE_VER_MINOR 0
-#define DRV_MODULE_VER_SUBMINOR 2
+#define DRV_MODULE_VER_SUBMINOR 3
#define ENA_IO_TXQ_IDX(q) (2 * (q))
#define ENA_IO_RXQ_IDX(q) (2 * (q) + 1)
@@ -409,6 +409,9 @@ static void ena_config_host_info(struct ena_com_dev *ena_dev)
ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT);
host_info->num_cpus = rte_lcore_count();
+ host_info->driver_supported_features =
+ ENA_ADMIN_HOST_INFO_RX_OFFSET_MASK;
+
rc = ena_com_set_host_attributes(ena_dev);
if (rc) {
if (rc == -ENA_COM_UNSUPPORTED)
@@ -2013,6 +2016,7 @@ static uint16_t eth_ena_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
ena_rx_ctx.max_bufs = rx_ring->sgl_size;
ena_rx_ctx.ena_bufs = rx_ring->ena_bufs;
ena_rx_ctx.descs = 0;
+ ena_rx_ctx.pkt_offset = 0;
/* receive packet context */
rc = ena_com_rx_pkt(rx_ring->ena_com_io_cq,
rx_ring->ena_com_io_sq,
@@ -2048,6 +2052,7 @@ static uint16_t eth_ena_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
mbuf->nb_segs = ena_rx_ctx.descs;
mbuf->port = rx_ring->port_id;
mbuf->pkt_len = 0;
+ mbuf->data_off += ena_rx_ctx.pkt_offset;
mbuf_head = mbuf;
} else {
/* for multi-segment pkts create mbuf chain */
--
2.20.1