From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <dan.gora@gmail.com>
Received: from mail-qk1-f176.google.com (mail-qk1-f176.google.com
[209.85.222.176]) by dpdk.org (Postfix) with ESMTP id 5D1FE1B213
for <dev@dpdk.org>; Thu, 27 Sep 2018 02:34:04 +0200 (CEST)
Received: by mail-qk1-f176.google.com with SMTP id q12-v6so522666qkl.13
for <dev@dpdk.org>; Wed, 26 Sep 2018 17:34:04 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;
h=sender:from:to:cc:subject:date:message-id:in-reply-to:references
:mime-version:content-transfer-encoding;
bh=PlH/VAfIrUGq17Kvr2neDS51vqfEwcHSM70/Jy2B3NE=;
b=jH4xuT7IpWHZwgFkuw8NrXmt35YOBwN+qeJQRmr33xHlEXsGXdzxC5ngywB9DOHlB/
uib0BCQCamSlXWMroSjdpRWillX6P40LtFL2lcth8s/SB4bukAtgZH6+rmJStOOTIWnI
axB6ZVDbDS3iprkOalQTbW/Pk8s9cMgaIuB0znlAsB6a3gdMhQMerOprsMkpolryWLOB
4gFDoZ+FP4aMIf+eMk+vUB/ocQZkjbaFe/xDujmXOYHBinBIo3xmVjKgTMUNeFJIAZzT
bUlQJCMAmpxE5+NiK4TCncEGPq2NRwSotb133aTd9bHL4bkhcT1vsaGaRVWMNlI/ol20
RTFw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=1e100.net; s=20161025;
h=x-gm-message-state:sender:from:to:cc:subject:date:message-id
:in-reply-to:references:mime-version:content-transfer-encoding;
bh=PlH/VAfIrUGq17Kvr2neDS51vqfEwcHSM70/Jy2B3NE=;
b=m8RyVtNY8lJGaWngsM98WyT1JZKuCHzrCJTfQWhhYK9dccYJJktkfGx1nX3Ygsw+WK
zY3avaFOAngn9bOCpPu6NMPjFYz5Ul82HyVpplpuXcT1G8nfd2w77oeW/6liCBq0C6St
i427BKU72exWHcSGrlL0pyCpwDtrpp5YRInwExdZZuLhvYjXPk9/Ttd8V1yrziopzkw7
r+eTjGKM2Ks17LaKfpZKfJn2mz47iW4724TiybpbdF7FxoKBE7fRoIWoAoTfWhrQtiF5
YaHzkWGCL+aV5+OpPP82kaHBLkwSNJjfo+50CdpXyuWmj8s5Dmu8ETzajFh32O+AWCwT
h4GQ==
X-Gm-Message-State: ABuFfoiZZg46FJDtpvkbcwPi6ytFnAYy9GHjauGupGKzNE9y2h7w2bv0
wC8HZDXTFKKmIaKxFS0AuU+H2AsA
X-Google-Smtp-Source: ACcGV60F5ANhfU20GVWeRpk05nnP23KTpJ2P8dr1eHYjdMod+oGkM3f4IfRqW0/yuzOJqb7oVZb9FA==
X-Received: by 2002:a37:30d4:: with SMTP id
w203-v6mr2829130qkw.106.1538008443306;
Wed, 26 Sep 2018 17:34:03 -0700 (PDT)
Received: from snappy.local.lan (189-46-124-178.dsl.telesp.net.br.
[189.46.124.178])
by smtp.gmail.com with ESMTPSA id x26-v6sm463053qth.15.2018.09.26.17.34.00
(version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128);
Wed, 26 Sep 2018 17:34:02 -0700 (PDT)
Sender: Dan Gora <dan.gora@gmail.com>
From: Dan Gora <dg@adax.com>
To: dev@dpdk.org
Cc: Igor Ryzhov <iryzhov@nfware.com>,
Stephen Hemminger <stephen@networkplumber.org>,
Ferruh Yigit <ferruh.yigit@intel.com>, Dan Gora <dg@adax.com>
Date: Wed, 26 Sep 2018 21:32:51 -0300
Message-Id: <20180927003256.6901-2-dg@adax.com>
X-Mailer: git-send-email 2.19.0
In-Reply-To: <20180927003256.6901-1-dg@adax.com>
References: <20180911232906.18352-1-dg@adax.com>
<20180927003256.6901-1-dg@adax.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Subject: [dpdk-dev] [PATCH v3 1/6] kni: add API to set link status on kernel
interface
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/dev>,
<mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/dev>,
<mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Thu, 27 Sep 2018 00:34:04 -0000
Add a new API function to KNI, rte_kni_update_link() to allow DPDK
applications to update the link status for KNI network interfaces in
the linux kernel.
Signed-off-by: Dan Gora <dg@adax.com>
---
lib/librte_kni/rte_kni.c | 57 ++++++++++++++++++++++++++++++
lib/librte_kni/rte_kni.h | 18 ++++++++++
lib/librte_kni/rte_kni_version.map | 6 ++++
3 files changed, 81 insertions(+)
diff --git a/lib/librte_kni/rte_kni.c b/lib/librte_kni/rte_kni.c
index 65f6a2b03..0c3e17dbb 100644
--- a/lib/librte_kni/rte_kni.c
+++ b/lib/librte_kni/rte_kni.c
@@ -790,6 +790,63 @@ rte_kni_unregister_handlers(struct rte_kni *kni)
return 0;
}
+
+int __rte_experimental
+rte_kni_update_link(struct rte_kni *kni, struct rte_eth_link *link)
+{
+ char path[64];
+ char carrier[2];
+ const char *new_carrier;
+ int fd, ret;
+
+ if (kni == NULL || link == NULL)
+ return -1;
+
+ snprintf(path, sizeof(path), "/sys/devices/virtual/net/%s/carrier",
+ kni->name);
+
+ fd = open(path, O_RDWR);
+ if (fd == -1) {
+ RTE_LOG(ERR, KNI, "Failed to open file: %s.\n", path);
+ return -1;
+ }
+
+ ret = read(fd, carrier, 2);
+ if (ret < 1) {
+ /* Cannot read carrier until interface is marked
+ * 'up', so don't log an error.
+ */
+ close(fd);
+ return -1;
+ }
+
+ new_carrier = (link->link_status == ETH_LINK_UP) ? "1" : "0";
+ ret = write(fd, new_carrier, 1);
+ if (ret < 1) {
+ RTE_LOG(ERR, KNI, "Failed to write file: %s.\n", path);
+ close(fd);
+ return -1;
+ }
+
+ if (strncmp(carrier, new_carrier, 1)) {
+ if (link->link_status == ETH_LINK_UP) {
+ RTE_LOG(INFO, KNI, "%s NIC Link is Up %d Mbps %s %s.\n",
+ kni->name,
+ link->link_speed,
+ link->link_autoneg ? "(AutoNeg)" : "(Fixed)",
+ link->link_duplex ?
+ "Full Duplex" : "Half Duplex");
+ } else {
+ RTE_LOG(INFO, KNI, "%s NIC Link is Down.\n",
+ kni->name);
+ }
+ }
+
+ close(fd);
+
+ return 0;
+}
+
void
rte_kni_close(void)
{
diff --git a/lib/librte_kni/rte_kni.h b/lib/librte_kni/rte_kni.h
index 99055e2c2..4118ae97a 100644
--- a/lib/librte_kni/rte_kni.h
+++ b/lib/librte_kni/rte_kni.h
@@ -21,6 +21,7 @@
#include <rte_memory.h>
#include <rte_mempool.h>
#include <rte_ether.h>
+#include <rte_ethdev.h>
#include <exec-env/rte_kni_common.h>
@@ -228,6 +229,23 @@ int rte_kni_register_handlers(struct rte_kni *kni, struct rte_kni_ops *ops);
*/
int rte_kni_unregister_handlers(struct rte_kni *kni);
+/**
+ * Update link status info for KNI port.
+ *
+ * Update the linkup/linkdown status of a KNI interface in the kernel.
+ *
+ * @param kni
+ * pointer to struct rte_kni.
+ * @param link
+ * pointer to struct rte_eth_link containing new interface status.
+ *
+ * @return
+ * On success: 0
+ * On failure: -1
+ */
+int __rte_experimental
+rte_kni_update_link(struct rte_kni *kni, struct rte_eth_link *link);
+
/**
* Close KNI device.
*/
diff --git a/lib/librte_kni/rte_kni_version.map b/lib/librte_kni/rte_kni_version.map
index acd515eb0..c877dc6aa 100644
--- a/lib/librte_kni/rte_kni_version.map
+++ b/lib/librte_kni/rte_kni_version.map
@@ -15,3 +15,9 @@ DPDK_2.0 {
local: *;
};
+
+EXPERIMENTAL {
+ global:
+
+ rte_kni_update_link;
+};
--
2.19.0