[PATCH v4 1/1] ethdev: add support to provide link type

[<skori@marvell.com>]

From: Sunil Kumar Kori <skori@marvell.com>

Adding link type parameter to provide the type
of port like twisted pair, fibre etc.

Also added an API to convert the RTE_ETH_LINK_TYPE_XXX
to a readable string.

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
---
v3..v4:
 - Convert #define into enum.
 - Enhance comments for each port link type.
 - Fix test failures.
v2..v3
 - Extend link type list as per suggestion
 app/test/test_ethdev_link.c      | 18 +++++++-----
 lib/ethdev/ethdev_trace.h        |  7 +++++
 lib/ethdev/ethdev_trace_points.c |  3 ++
 lib/ethdev/rte_ethdev.c          | 46 ++++++++++++++++++++++++++++--
 lib/ethdev/rte_ethdev.h          | 48 ++++++++++++++++++++++++++++++++
 5 files changed, 113 insertions(+), 9 deletions(-)

diff --git a/app/test/test_ethdev_link.c b/app/test/test_ethdev_link.c
index f063a5fe26..5d1a784208 100644
--- a/app/test/test_ethdev_link.c
+++ b/app/test/test_ethdev_link.c
@@ -17,23 +17,25 @@ test_link_status_up_default(void)
 		.link_speed = RTE_ETH_SPEED_NUM_2_5G,
 		.link_status = RTE_ETH_LINK_UP,
 		.link_autoneg = RTE_ETH_LINK_AUTONEG,
-		.link_duplex = RTE_ETH_LINK_FULL_DUPLEX
+		.link_duplex = RTE_ETH_LINK_FULL_DUPLEX,
+		.link_type = RTE_ETH_LINK_TYPE_NONE
 	};
 	char text[RTE_ETH_LINK_MAX_STR_LEN];
 
 	ret = rte_eth_link_to_str(text, sizeof(text), &link_status);
 	RTE_TEST_ASSERT(ret > 0, "Failed to format default string\n");
 	printf("Default link up #1: %s\n", text);
-	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at 2.5 Gbps FDX Autoneg",
+	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at 2.5 Gbps FDX Autoneg None",
 		text, strlen(text), "Invalid default link status string");
 
 	link_status.link_duplex = RTE_ETH_LINK_HALF_DUPLEX;
 	link_status.link_autoneg = RTE_ETH_LINK_FIXED;
 	link_status.link_speed = RTE_ETH_SPEED_NUM_10M;
+	link_status.link_type = RTE_ETH_LINK_TYPE_SGMII;
 	ret = rte_eth_link_to_str(text, sizeof(text), &link_status);
 	printf("Default link up #2: %s\n", text);
 	RTE_TEST_ASSERT(ret > 0, "Failed to format default string\n");
-	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at 10 Mbps HDX Fixed",
+	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at 10 Mbps HDX Fixed SGMII",
 		text, strlen(text), "Invalid default link status "
 		"string with HDX");
 
@@ -41,7 +43,7 @@ test_link_status_up_default(void)
 	ret = rte_eth_link_to_str(text, sizeof(text), &link_status);
 	printf("Default link up #3: %s\n", text);
 	RTE_TEST_ASSERT(ret > 0, "Failed to format default string\n");
-	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at Unknown HDX Fixed",
+	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at Unknown HDX Fixed SGMII",
 		text, strlen(text), "Invalid default link status "
 		"string with HDX");
 
@@ -49,7 +51,7 @@ test_link_status_up_default(void)
 	ret = rte_eth_link_to_str(text, sizeof(text), &link_status);
 	printf("Default link up #3: %s\n", text);
 	RTE_TEST_ASSERT(ret > 0, "Failed to format default string\n");
-	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at None HDX Fixed",
+	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at None HDX Fixed SGMII",
 		text, strlen(text), "Invalid default link status "
 		"string with HDX");
 
@@ -57,6 +59,7 @@ test_link_status_up_default(void)
 	link_status.link_speed = RTE_ETH_SPEED_NUM_400G;
 	link_status.link_duplex = RTE_ETH_LINK_HALF_DUPLEX;
 	link_status.link_autoneg = RTE_ETH_LINK_AUTONEG;
+	link_status.link_type = RTE_ETH_LINK_TYPE_GAUI;
 	ret = rte_eth_link_to_str(text, sizeof(text), &link_status);
 	printf("Default link up #4:len = %d, %s\n", ret, text);
 	RTE_TEST_ASSERT(ret < RTE_ETH_LINK_MAX_STR_LEN,
@@ -92,7 +95,8 @@ test_link_status_invalid(void)
 		.link_speed = 55555,
 		.link_status = RTE_ETH_LINK_UP,
 		.link_autoneg = RTE_ETH_LINK_AUTONEG,
-		.link_duplex = RTE_ETH_LINK_FULL_DUPLEX
+		.link_duplex = RTE_ETH_LINK_FULL_DUPLEX,
+		.link_type = RTE_ETH_LINK_TYPE_UNKNOWN
 	};
 	char text[RTE_ETH_LINK_MAX_STR_LEN];
 
@@ -100,7 +104,7 @@ test_link_status_invalid(void)
 	RTE_TEST_ASSERT(ret < RTE_ETH_LINK_MAX_STR_LEN,
 		"Failed to format invalid string\n");
 	printf("invalid link up #1: len=%d %s\n", ret, text);
-	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at Invalid FDX Autoneg",
+	TEST_ASSERT_BUFFERS_ARE_EQUAL("Link up at Invalid FDX Autoneg Unknown",
 		text, strlen(text), "Incorrect invalid link status string");
 
 	return TEST_SUCCESS;
diff --git a/lib/ethdev/ethdev_trace.h b/lib/ethdev/ethdev_trace.h
index 482befc209..c5cba0edba 100644
--- a/lib/ethdev/ethdev_trace.h
+++ b/lib/ethdev/ethdev_trace.h
@@ -2110,6 +2110,13 @@ RTE_TRACE_POINT_FP(
 	rte_trace_point_emit_string(ret);
 )
 
+RTE_TRACE_POINT_FP(
+	rte_eth_trace_link_type_to_str,
+	RTE_TRACE_POINT_ARGS(uint8_t link_type, const char *ret),
+	rte_trace_point_emit_u8(link_type);
+	rte_trace_point_emit_string(ret);
+);
+
 /* Called in loop in examples/bond and examples/ethtool */
 RTE_TRACE_POINT_FP(
 	rte_eth_trace_macaddr_get,
diff --git a/lib/ethdev/ethdev_trace_points.c b/lib/ethdev/ethdev_trace_points.c
index 071c508327..706acdf356 100644
--- a/lib/ethdev/ethdev_trace_points.c
+++ b/lib/ethdev/ethdev_trace_points.c
@@ -206,6 +206,9 @@ RTE_TRACE_POINT_REGISTER(rte_eth_trace_link_speed_to_str,
 RTE_TRACE_POINT_REGISTER(rte_eth_trace_link_to_str,
 	lib.ethdev.link_to_str)
 
+RTE_TRACE_POINT_REGISTER(rte_eth_trace_link_type_to_str,
+	lib.ethdev.link_type_to_str)
+
 RTE_TRACE_POINT_REGISTER(rte_eth_trace_stats_get,
 	lib.ethdev.stats_get)
 
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index dd7c00bc94..db496d70c4 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -3285,18 +3285,60 @@ rte_eth_link_to_str(char *str, size_t len, const struct rte_eth_link *eth_link)
 	if (eth_link->link_status == RTE_ETH_LINK_DOWN)
 		ret = snprintf(str, len, "Link down");
 	else
-		ret = snprintf(str, len, "Link up at %s %s %s",
+		ret = snprintf(str, len, "Link up at %s %s %s %s",
 			rte_eth_link_speed_to_str(eth_link->link_speed),
 			(eth_link->link_duplex == RTE_ETH_LINK_FULL_DUPLEX) ?
 			"FDX" : "HDX",
 			(eth_link->link_autoneg == RTE_ETH_LINK_AUTONEG) ?
-			"Autoneg" : "Fixed");
+			"Autoneg" : "Fixed",
+			rte_eth_link_type_to_str(eth_link->link_type));
 
 	rte_eth_trace_link_to_str(len, eth_link, str, ret);
 
 	return ret;
 }
 
+RTE_EXPORT_EXPERIMENTAL_SYMBOL(rte_eth_link_type_to_str, 25.11)
+const char *
+rte_eth_link_type_to_str(enum rte_eth_link_type link_type)
+{
+	static const char * const link_type_str[] = {
+		[RTE_ETH_LINK_TYPE_NONE] = "None",
+		[RTE_ETH_LINK_TYPE_TP] = "Twisted Pair",
+		[RTE_ETH_LINK_TYPE_AUI] = "Attachment Unit Interface",
+		[RTE_ETH_LINK_TYPE_MII] = "Media Independent Interface",
+		[RTE_ETH_LINK_TYPE_FIBER] = "Fiber",
+		[RTE_ETH_LINK_TYPE_BNC] = "BNC",
+		[RTE_ETH_LINK_TYPE_DA] = "Direct Attach Copper",
+		[RTE_ETH_LINK_TYPE_SGMII] = "SGMII",
+		[RTE_ETH_LINK_TYPE_QSGMII] = "QSGMII",
+		[RTE_ETH_LINK_TYPE_XFI] = "XFI",
+		[RTE_ETH_LINK_TYPE_SFI] = "SFI",
+		[RTE_ETH_LINK_TYPE_XLAUI] = "XLAUI",
+		[RTE_ETH_LINK_TYPE_GAUI] = "GAUI",
+		[RTE_ETH_LINK_TYPE_XAUI] = "XAUI",
+		[RTE_ETH_LINK_TYPE_CAUI] = "CAUI",
+		[RTE_ETH_LINK_TYPE_LAUI] = "LAUI",
+		[RTE_ETH_LINK_TYPE_SFP] = "SFP",
+		[RTE_ETH_LINK_TYPE_SFP_DD] = "SFP_DD",
+		[RTE_ETH_LINK_TYPE_SFP_PLUS] = "SFP_PLUS",
+		[RTE_ETH_LINK_TYPE_SFP28] = "SFP28",
+		[RTE_ETH_LINK_TYPE_QSFP] = "QSFP",
+		[RTE_ETH_LINK_TYPE_QSFP_PLUS] = "QSFP_PLUS",
+		[RTE_ETH_LINK_TYPE_QSFP28] = "QSFP28",
+		[RTE_ETH_LINK_TYPE_QSFP56] = "QSFP56",
+		[RTE_ETH_LINK_TYPE_QSFP_DD] = "QSFP_DD",
+		[RTE_ETH_LINK_TYPE_UNKNOWN] = "Unknown"
+	};
+	const char *str = NULL;
+
+	if ((link_type < RTE_DIM(link_type_str)) && link_type_str[link_type])
+		str = link_type_str[link_type];
+
+	rte_eth_trace_link_type_to_str(link_type, str);
+	return str;
+}
+
 RTE_EXPORT_SYMBOL(rte_eth_stats_get)
 int
 rte_eth_stats_get(uint16_t port_id, struct rte_eth_stats *stats)
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index f9fb6ae549..92d1ded51f 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -329,6 +329,39 @@ struct rte_eth_stats {
 #define RTE_ETH_SPEED_NUM_UNKNOWN UINT32_MAX /**< Unknown */
 /**@}*/
 
+/**@{@name PORT type
+ * Ethernet port link type
+ */
+enum rte_eth_link_type {
+	RTE_ETH_LINK_TYPE_NONE = 0, /**< Not defined */
+	RTE_ETH_LINK_TYPE_TP,       /**< Twisted Pair */
+	RTE_ETH_LINK_TYPE_AUI,      /**< Attachment Unit Interface */
+	RTE_ETH_LINK_TYPE_MII,      /**< Media Independent Interface */
+	RTE_ETH_LINK_TYPE_FIBER,    /**< Optical Fiber Link */
+	RTE_ETH_LINK_TYPE_BNC,      /**< BNC Link type for RF connection */
+	RTE_ETH_LINK_TYPE_DA,       /**< Direct Attach copper */
+	RTE_ETH_LINK_TYPE_SGMII,    /**< Serial Gigabit Media Independent Interface */
+	RTE_ETH_LINK_TYPE_QSGMII,   /**< Link to multiplex 4 SGMII over one serial link */
+	RTE_ETH_LINK_TYPE_XFI,      /**< 10 Gigabit Attachment Unit Interface */
+	RTE_ETH_LINK_TYPE_SFI,      /**< 10 Gigabit Serial Interface for optical networking */
+	RTE_ETH_LINK_TYPE_XLAUI,    /**< 40 Gigabit Attachment Unit Interface */
+	RTE_ETH_LINK_TYPE_GAUI,     /**< Gigabit Interface for bandwidth like 50/100/200 Gbps */
+	RTE_ETH_LINK_TYPE_XAUI,     /**< 10 Gigabit Attachment Unit Interface */
+	RTE_ETH_LINK_TYPE_CAUI,     /**< 100 Gigabit Attachment Unit Interface */
+	RTE_ETH_LINK_TYPE_LAUI,     /**< 50 Gigabit Attachment Unit Interface */
+	RTE_ETH_LINK_TYPE_SFP,      /**< Pluggable module for 1 Gigabit */
+	RTE_ETH_LINK_TYPE_SFP_PLUS, /**< Pluggable module for 10 Gigabit */
+	RTE_ETH_LINK_TYPE_SFP28,    /**< Pluggable module for 25 Gigabit */
+	RTE_ETH_LINK_TYPE_SFP_DD,   /**< Pluggable module for 100 Gigabit */
+	RTE_ETH_LINK_TYPE_QSFP,     /**< Module to mutiplex 4 SFP i.e. 4*1=4 Gigabit */
+	RTE_ETH_LINK_TYPE_QSFP_PLUS,/**< Module to mutiplex 4 SFP_PLUS i.e. 4*10=40 Gigabit */
+	RTE_ETH_LINK_TYPE_QSFP28,   /**< Module to mutiplex 4 SFP28 i.e. 4*25=100 Gigabit */
+	RTE_ETH_LINK_TYPE_QSFP56,   /**< Module to mutiplex 4 SFP56 i.e. 4*50=200 Gigabit */
+	RTE_ETH_LINK_TYPE_QSFP_DD,  /**< Module to mutiplex 4 SFP_DD i.e. 4*100=400 Gigabit */
+	RTE_ETH_LINK_TYPE_UNKNOWN = 31, /**< Unknown Link Type */
+};
+/**@}*/
+
 /**
  * A structure used to retrieve link-level information of an Ethernet port.
  */
@@ -341,6 +374,7 @@ struct rte_eth_link {
 			uint16_t link_duplex  : 1;  /**< RTE_ETH_LINK_[HALF/FULL]_DUPLEX */
 			uint16_t link_autoneg : 1;  /**< RTE_ETH_LINK_[AUTONEG/FIXED] */
 			uint16_t link_status  : 1;  /**< RTE_ETH_LINK_[DOWN/UP] */
+			uint16_t link_type    : 5;  /**< RTE_ETH_LINK_TYPE_XXX */
 		};
 	};
 };
@@ -3116,6 +3150,20 @@ int rte_eth_link_get_nowait(uint16_t port_id, struct rte_eth_link *link)
 __rte_experimental
 const char *rte_eth_link_speed_to_str(uint32_t link_speed);
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * This function converts an Ethernet link type to a string.
+ *
+ * @param link_type
+ *   The link type to convert.
+ * @return
+ *   The string representation of the link type.
+ */
+__rte_experimental
+const char *rte_eth_link_type_to_str(enum rte_eth_link_type link_type);
+
 /**
  * @warning
  * @b EXPERIMENTAL: this API may change without prior notice.
-- 
2.43.0