From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Rose Subject: [RFC PATCH] iproute2: Add flag to indicate extended dump info Date: Fri, 10 Feb 2012 07:18:05 -0800 Message-ID: <20120210151804.4175.12859.stgit@gitlad.jf.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: shemminger@vyatta.com, davem@davemloft.net To: netdev@vger.kernel.org Return-path: Received: from mga14.intel.com ([143.182.124.37]:24715 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751529Ab2BJPR5 (ORCPT ); Fri, 10 Feb 2012 10:17:57 -0500 Sender: netdev-owner@vger.kernel.org List-ID: Add flag to the ip link dump command to indicate to the kernel that the application is requesting the extended interface information such as VFs. The kernel will take this flag as an implicit indication that the application has allocated a 16K or larger buffer, which is what the 'ip' command in fact does. Signed-off-by: Greg Rose --- include/linux/netlink.h | 1 + lib/libnetlink.c | 2 +- 2 files changed, 2 insertions(+), 1 deletions(-) diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 5c4f087..f913797 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -59,6 +59,7 @@ struct nlmsghdr { #define NLM_F_MATCH 0x200 /* return all matching */ #define NLM_F_ATOMIC 0x400 /* atomic GET */ #define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH) +#define NLM_F_EXT 0x800 /* Get extended interface info such as VFs */ /* Modifiers to NEW request */ #define NLM_F_REPLACE 0x100 /* Override existing */ diff --git a/lib/libnetlink.c b/lib/libnetlink.c index c581e11..f29da3d 100644 --- a/lib/libnetlink.c +++ b/lib/libnetlink.c @@ -99,7 +99,7 @@ int rtnl_wilddump_request(struct rtnl_handle *rth, int family, int type) memset(&req, 0, sizeof(req)); req.nlh.nlmsg_len = sizeof(req); req.nlh.nlmsg_type = type; - req.nlh.nlmsg_flags = NLM_F_DUMP|NLM_F_REQUEST; + req.nlh.nlmsg_flags = NLM_F_DUMP|NLM_F_REQUEST|NLM_F_EXT; req.nlh.nlmsg_pid = 0; req.nlh.nlmsg_seq = rth->dump = ++rth->seq; req.g.rtgen_family = family;