netdev - [PATCH net-next iproute2 v2 2/2] devlink: Introduce PCI PF and VF port flavour and attribute

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Date:   Wed, 10 Jul 2019 07:39:52 -0500
From:   Parav Pandit <parav@...lanox.com>
To:     netdev@...r.kernel.org
Cc:     stephen@...workplumber.org, dsahern@...nel.org, jiri@...lanox.com,
        Parav Pandit <parav@...lanox.com>
Subject: [PATCH net-next iproute2 v2 2/2] devlink: Introduce PCI PF and VF port flavour and attribute

Introduce PCI PF and VF port flavour and port attributes such as PF
number and VF number.

$ devlink port show
pci/0000:05:00.0/0: type eth netdev eth0 flavour pcipf pfnum 0
pci/0000:05:00.0/1: type eth netdev eth1 flavour pcivf pfnum 0 vfnum 0
pci/0000:05:00.0/2: type eth netdev eth2 flavour pcivf pfnum 0 vfnum 1

Signed-off-by: Parav Pandit <parav@...lanox.com>
---
Changelog:
v1->v2:
 - Instead of if-else using switch-case.
 - Split patch to two patches to have kernel header update in dedicated
   patch.
---
 devlink/devlink.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/devlink/devlink.c b/devlink/devlink.c
index ac8c0fb1..d8197ea3 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -2794,11 +2794,29 @@ static const char *port_flavour_name(uint16_t flavour)
 		return "cpu";
 	case DEVLINK_PORT_FLAVOUR_DSA:
 		return "dsa";
+	case DEVLINK_PORT_FLAVOUR_PCI_PF:
+		return "pcipf";
+	case DEVLINK_PORT_FLAVOUR_PCI_VF:
+		return "pcivf";
 	default:
 		return "<unknown flavour>";
 	}
 }
 
+static void pr_out_port_pfvf_num(struct dl *dl, struct nlattr **tb)
+{
+	uint16_t fn_num;
+
+	if (tb[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
+		fn_num = mnl_attr_get_u16(tb[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
+		pr_out_uint(dl, "pfnum", fn_num);
+	}
+	if (tb[DEVLINK_ATTR_PORT_PCI_VF_NUMBER]) {
+		fn_num = mnl_attr_get_u16(tb[DEVLINK_ATTR_PORT_PCI_VF_NUMBER]);
+		pr_out_uint(dl, "vfnum", fn_num);
+	}
+}
+
 static void pr_out_port(struct dl *dl, struct nlattr **tb)
 {
 	struct nlattr *pt_attr = tb[DEVLINK_ATTR_PORT_TYPE];
@@ -2828,6 +2846,15 @@ static void pr_out_port(struct dl *dl, struct nlattr **tb)
 				mnl_attr_get_u16(tb[DEVLINK_ATTR_PORT_FLAVOUR]);
 
 		pr_out_str(dl, "flavour", port_flavour_name(port_flavour));
+
+		switch (port_flavour) {
+		case DEVLINK_PORT_FLAVOUR_PCI_PF:
+		case DEVLINK_PORT_FLAVOUR_PCI_VF:
+			pr_out_port_pfvf_num(dl, tb);
+			break;
+		default:
+			break;
+		}
 	}
 	if (tb[DEVLINK_ATTR_PORT_NUMBER]) {
 		uint32_t port_number;
-- 
2.19.2