netdev - [PATCH iproute2 net-next v3 3/6] libnetlink: Add helper for getting a _

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Message-Id: <20181005232522.4848-4-vinicius.gomes@intel.com>
Date:   Fri,  5 Oct 2018 16:25:19 -0700
From:   Vinicius Costa Gomes <vinicius.gomes@...el.com>
To:     netdev@...r.kernel.org
Cc:     Jesus Sanchez-Palencia <jesus.sanchez-palencia@...el.com>,
        jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
        ilias.apalodimas@...aro.org, simon.fok@...systems.com
Subject: [PATCH iproute2 net-next v3 3/6] libnetlink: Add helper for getting a __s32 from netlink msgs

From: Jesus Sanchez-Palencia <jesus.sanchez-palencia@...el.com>

This function retrieves a signed 32-bit integer from a netlink message
and returns it.

Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@...el.com>
---
 include/libnetlink.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/libnetlink.h b/include/libnetlink.h
index ffc49e56..c44c3c72 100644
--- a/include/libnetlink.h
+++ b/include/libnetlink.h
@@ -185,6 +185,10 @@ static inline __u64 rta_getattr_u64(const struct rtattr *rta)
 	memcpy(&tmp, RTA_DATA(rta), sizeof(__u64));
 	return tmp;
 }
+static inline __s32 rta_getattr_s32(const struct rtattr *rta)
+{
+	return *(__s32 *)RTA_DATA(rta);
+}
 static inline __s64 rta_getattr_s64(const struct rtattr *rta)
 {
 	__s64 tmp;
-- 
2.19.0