netdev - [patch iproute2 rfc 1/2] devlink: introduce support for showing port flavours

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Date:   Fri, 23 Mar 2018 07:35:57 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, idosch@...lanox.com,
        jakub.kicinski@...ronome.com, mlxsw@...lanox.com, andrew@...n.ch,
        vivien.didelot@...oirfairelinux.com, f.fainelli@...il.com,
        michael.chan@...adcom.com, ganeshgr@...lsio.com,
        saeedm@...lanox.com, simon.horman@...ronome.com,
        pieter.jansenvanvuuren@...ronome.com, john.hurley@...ronome.com,
        dirk.vandermerwe@...ronome.com, alexander.h.duyck@...el.com,
        ogerlitz@...lanox.com, dsahern@...il.com, vijaya.guvva@...ium.com,
        satananda.burla@...ium.com, raghu.vatsavayi@...ium.com,
        felix.manlunas@...ium.com, gospo@...adcom.com,
        sathya.perla@...adcom.com, vasundhara-v.volam@...adcom.com,
        tariqt@...lanox.com, eranbe@...lanox.com,
        jeffrey.t.kirsher@...el.com
Subject: [patch iproute2 rfc 1/2] devlink: introduce support for showing port flavours

From: Jiri Pirko <jiri@...lanox.com>

Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
 devlink/devlink.c            | 16 ++++++++++++++++
 include/uapi/linux/devlink.h | 20 ++++++++++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/devlink/devlink.c b/devlink/devlink.c
index 69c3c5d9dd31..952b7cabbccf 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -1685,6 +1685,16 @@ static const char *port_type_name(uint32_t type)
 	}
 }
 
+static const char *port_flavour_name(uint16_t flavour)
+{
+	switch (flavour) {
+	case DEVLINK_PORT_FLAVOUR_PHYSICAL: return "physical";
+	case DEVLINK_PORT_FLAVOUR_PF_REP: return "pf_rep";
+	case DEVLINK_PORT_FLAVOUR_VF_REP: return "vf_rep";
+	default: return "<unknown flavour>";
+	}
+}
+
 static void pr_out_port(struct dl *dl, struct nlattr **tb)
 {
 	struct nlattr *pt_attr = tb[DEVLINK_ATTR_PORT_TYPE];
@@ -1709,6 +1719,12 @@ static void pr_out_port(struct dl *dl, struct nlattr **tb)
 	if (tb[DEVLINK_ATTR_PORT_IBDEV_NAME])
 		pr_out_str(dl, "ibdev",
 			   mnl_attr_get_str(tb[DEVLINK_ATTR_PORT_IBDEV_NAME]));
+	if (tb[DEVLINK_ATTR_PORT_FLAVOUR]) {
+		uint16_t port_flavour =
+				mnl_attr_get_u16(tb[DEVLINK_ATTR_PORT_FLAVOUR]);
+
+		pr_out_str(dl, "flavour", port_flavour_name(port_flavour));
+	}
 	if (tb[DEVLINK_ATTR_PORT_SPLIT_GROUP])
 		pr_out_uint(dl, "split_group",
 			    mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_SPLIT_GROUP]));
diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h
index 9f17286ec89f..5ea871c2739d 100644
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -132,6 +132,24 @@ enum devlink_eswitch_encap_mode {
 	DEVLINK_ESWITCH_ENCAP_MODE_BASIC,
 };
 
+enum devlink_port_flavour {
+	DEVLINK_PORT_FLAVOUR_PHYSICAL, /* Any kind of a port physically
+					* facing the user.
+					*/
+	DEVLINK_PORT_FLAVOUR_PF_REP, /* Port represents a SR-IOV physical
+				      *	function counterpart port of
+				      *	embedded switch.
+				      */
+	DEVLINK_PORT_FLAVOUR_VF_REP, /* Port represents a SR-IOV virtual
+				      *	function counterpart port of
+				      *	embedded switch.
+				      */
+	DEVLINK_PORT_FLAVOUR_CPU, /* CPU port */
+	DEVLINK_PORT_FLAVOUR_DSA, /* Distributed switch architecture
+				   * interconnect port.
+				   */
+};
+
 enum devlink_attr {
 	/* don't change the order or add anything between, this is ABI! */
 	DEVLINK_ATTR_UNSPEC,
@@ -224,6 +242,8 @@ enum devlink_attr {
 	DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,	/* u64 */
 	DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,/* u64 */
 
+	DEVLINK_ATTR_PORT_FLAVOUR,		/* u16 */
+
 	/* add new attributes above here, update the policy in devlink.c */
 
 	__DEVLINK_ATTR_MAX,
-- 
2.14.3