From: Rasesh Mody <rasesh.mody@cavium.com>
Date: Mon, 9 Apr 2018 04:48:06 +0000 (-0700)
Subject: net/qede/base: add stats counter for link state
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=803a4cf0e05207b3cccb4699b8ef09df1a673cd3;p=dpdk.git

net/qede/base: add stats counter for link state

Add link_change_count counter to track number of link state transitions

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>
---

diff --git a/drivers/net/qede/base/ecore_dev_api.h b/drivers/net/qede/base/ecore_dev_api.h
index aee11c03bf..f619683fc9 100644
--- a/drivers/net/qede/base/ecore_dev_api.h
+++ b/drivers/net/qede/base/ecore_dev_api.h
@@ -377,6 +377,7 @@ struct ecore_eth_stats_common {
 	u64 tx_mac_mc_packets;
 	u64 tx_mac_bc_packets;
 	u64 tx_mac_ctrl_frames;
+	u64 link_change_count;
 };
 
 struct ecore_eth_stats_bb {
diff --git a/drivers/net/qede/base/ecore_l2.c b/drivers/net/qede/base/ecore_l2.c
index bbcbbd028c..0883fd3213 100644
--- a/drivers/net/qede/base/ecore_l2.c
+++ b/drivers/net/qede/base/ecore_l2.c
@@ -1948,6 +1948,11 @@ static void __ecore_get_vport_port_stats(struct ecore_hwfn *p_hwfn,
 		p_ah->tx_1519_to_max_byte_packets =
 			port_stats.eth.u1.ah1.t1519_to_max;
 	}
+
+	p_common->link_change_count = ecore_rd(p_hwfn, p_ptt,
+					       p_hwfn->mcp_info->port_addr +
+					       OFFSETOF(struct public_port,
+							link_change_count));
 }
 
 void __ecore_get_vport_stats(struct ecore_hwfn *p_hwfn,
@@ -2064,11 +2069,14 @@ void ecore_reset_vport_stats(struct ecore_dev *p_dev)
 
 	/* PORT statistics are not necessarily reset, so we need to
 	 * read and create a baseline for future statistics.
+	 * Link change stat is maintained by MFW, return its value as is.
 	 */
 	if (!p_dev->reset_stats)
 		DP_INFO(p_dev, "Reset stats not allocated\n");
-	else
+	else {
 		_ecore_get_vport_stats(p_dev, p_dev->reset_stats);
+		p_dev->reset_stats->common.link_change_count = 0;
+	}
 }
 
 void ecore_arfs_mode_configure(struct ecore_hwfn *p_hwfn,