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From: Jia Yu <jyu@vmware.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH 2/2] rte_ethdev: add return status for rte_eth_stats_get
Date: Fri,  7 Nov 2014 09:31:51 -0800
Message-ID: <1415381511-43364-3-git-send-email-jyu@vmware.com> (raw)
In-Reply-To: <1415381511-43364-1-git-send-email-jyu@vmware.com>

rte_eth_stats_get is to get physical device statistics. Without
return status, caller does not know whether function fails or not
(i.e. invalid port_id, driver has no stats_get callback). Caller
cannot differiente normal 0 stats or error case. This fix adds
a return status to the function.

Signed-off-by: Jia Yu <jyu@vmware.com>
---
 lib/librte_ether/rte_ethdev.c | 7 ++++---
 lib/librte_ether/rte_ethdev.h | 4 +++-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 6c01b02..4ec9ca6 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -1226,21 +1226,22 @@ rte_eth_link_get_nowait(uint8_t port_id, struct rte_eth_link *eth_link)
 	}
 }
 
-void
+int
 rte_eth_stats_get(uint8_t port_id, struct rte_eth_stats *stats)
 {
 	struct rte_eth_dev *dev;
 
 	if (port_id >= nb_ports) {
 		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
-		return;
+		return (-ENODEV);
 	}
 	dev = &rte_eth_devices[port_id];
 	memset(stats, 0, sizeof(*stats));
 
-	FUNC_PTR_OR_RET(*dev->dev_ops->stats_get);
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->stats_get, -ENOTSUP);
 	(*dev->dev_ops->stats_get)(dev, stats);
 	stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
+        return 0;
 }
 
 void
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 8bf274d..e29e9be 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -2054,8 +2054,10 @@ extern void rte_eth_link_get_nowait(uint8_t port_id,
  *   - *obytes*   with the total of successfully transmitted bytes.
  *   - *ierrors*  with the total of erroneous received packets.
  *   - *oerrors*  with the total of failed transmitted packets.
+ * @return
+ *   Zero if successful. Non-zero otherwise.
  */
-extern void rte_eth_stats_get(uint8_t port_id, struct rte_eth_stats *stats);
+extern int rte_eth_stats_get(uint8_t port_id, struct rte_eth_stats *stats);
 
 /**
  * Reset the general I/O statistics of an Ethernet device.
-- 
1.9.1

  parent reply	other threads:[~2014-11-08  1:30 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-07 17:31 [dpdk-dev] [PATCH 0/2] rte_ethdev fix/improvement Jia Yu
2014-11-07 17:31 ` [dpdk-dev] [PATCH 1/2] rte_ethdev: update link status (speed, duplex, link_up) after rte_eth_dev_start Jia Yu
2014-11-12  3:57   ` Zhang, Helin
2015-01-30 10:28     ` Thomas Monjalon
2015-02-03  8:00       ` Jia Yu
2015-02-03  8:35         ` Zhang, Helin
2015-02-03 18:53           ` Jia Yu
2015-02-04  0:37             ` Zhang, Helin
2014-11-07 17:31 ` Jia Yu [this message]
2014-11-10  9:40 ` [dpdk-dev] [PATCH 0/2] rte_ethdev fix/improvement Thomas Monjalon
2014-11-11 23:48   ` Jia Yu
2014-11-12  9:35     ` Thomas Monjalon
2015-02-11  3:20 ` Zhang, Helin
2015-02-18 16:51   ` Thomas Monjalon

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