netdev - [RFC PATCH net-next] net: Include phys_port identifier in the RTM

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Message-ID: <20130628153424.GA4340@fedora-17-guest.blr.amer.dell.com>
Date:	Fri, 28 Jun 2013 21:04:43 +0530
From:	<Narendra_K@...l.com>
To:	<netdev@...r.kernel.org>
CC:	<bhutchings@...arflare.com>, <john.r.fastabend@...el.com>
Subject: [RFC PATCH net-next] net: Include phys_port identifier in the
 RTM_NEWLINK message

This patch adds a new netlink attribute 'IFLA_PHYS_PORT' to identify
the 'phys_port' identifier and includes the 'phys_port' identifier
in the RTM_NEWLINK message.

Signed-off-by: Narendra K <narendra_k@...l.com>
---
 include/uapi/linux/if_link.h | 1 +
 net/core/rtnetlink.c         | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 03f6170..6dc4476 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -143,6 +143,7 @@ enum {
 	IFLA_NUM_TX_QUEUES,
 	IFLA_NUM_RX_QUEUES,
 	IFLA_CARRIER,
+	IFLA_PHYS_PORT,
 	__IFLA_MAX
 };
 
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 9007533..ade66a3 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -751,6 +751,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
 	       + nla_total_size(sizeof(struct rtnl_link_stats64))
 	       + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
 	       + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
+	       + nla_total_size(MAX_ADDR_LEN) /* IFLA_PHYS_PORT */
 	       + nla_total_size(4) /* IFLA_TXQLEN */
 	       + nla_total_size(4) /* IFLA_WEIGHT */
 	       + nla_total_size(4) /* IFLA_MTU */
@@ -913,6 +914,12 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
 			goto nla_put_failure;
 	}
 
+	if (dev->phys_port.port_id_len) {
+		if (nla_put(skb, IFLA_PHYS_PORT, dev->phys_port.port_id_len,
+			    dev->phys_port.port_id))
+			goto nla_put_failure;
+	}
+
 	attr = nla_reserve(skb, IFLA_STATS,
 			sizeof(struct rtnl_link_stats));
 	if (attr == NULL)
-- 
1.8.0.1

-- 
With regards,
Narendra K
Linux Engineering
Dell Inc.
--
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