From a247b89fe26e5bae41159dfa59475c04ae53e8e2 Mon Sep 17 00:00:00 2001
From: Chengwen Feng <fengchengwen@huawei.com>
Date: Thu, 19 Jan 2023 12:30:55 +0000
Subject: net/virtio: support private dump

[ upstream commit 426858d6a9975a26539f0398037558dcb418947a ]

This patch implements eth_dev_priv_dump callback which could use for
debugging.

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 drivers/net/virtio/virtio_ethdev.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index b317649d7e..a38b15d01c 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1018,6 +1018,24 @@ virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
 	return 0;
 }
 
+static int
+virtio_dev_priv_dump(struct rte_eth_dev *dev, FILE *f)
+{
+	struct virtio_hw *hw = dev->data->dev_private;
+
+	fprintf(f, "guest_features: 0x%" PRIx64 "\n", hw->guest_features);
+	fprintf(f, "vtnet_hdr_size: %u\n", hw->vtnet_hdr_size);
+	fprintf(f, "use_vec: rx-%u tx-%u\n", hw->use_vec_rx, hw->use_vec_tx);
+	fprintf(f, "use_inorder: rx-%u tx-%u\n", hw->use_inorder_rx, hw->use_inorder_tx);
+	fprintf(f, "intr_lsc: %u\n", hw->intr_lsc);
+	fprintf(f, "max_mtu: %u\n", hw->max_mtu);
+	fprintf(f, "max_rx_pkt_len: %zu\n", hw->max_rx_pkt_len);
+	fprintf(f, "max_queue_pairs: %u\n", hw->max_queue_pairs);
+	fprintf(f, "req_guest_features: 0x%" PRIx64 "\n", hw->req_guest_features);
+
+	return 0;
+}
+
 /*
  * dev_ops for virtio, bare necessities for basic operation
  */
@@ -1054,6 +1072,7 @@ static const struct eth_dev_ops virtio_eth_dev_ops = {
 	.mac_addr_remove         = virtio_mac_addr_remove,
 	.mac_addr_set            = virtio_mac_addr_set,
 	.get_monitor_addr        = virtio_get_monitor_addr,
+	.eth_dev_priv_dump       = virtio_dev_priv_dump,
 };
 
 /*
-- 
2.23.0