[RFC PATCH net-next v4 2/6] gtp: Add support for checking GTP device type

From: Marcin Szycik <marcin.szycik@linux.intel.com>
To: netdev@vger.kernel.org
Cc: michal.swiatkowski@linux.intel.com, wojciech.drewek@intel.com,
	davem@davemloft.net, kuba@kernel.org, pablo@netfilter.org,
	laforge@gnumonks.org, osmocom-net-gprs@lists.osmocom.org
Subject: [RFC PATCH net-next v4 2/6] gtp: Add support for checking GTP device type
Date: Fri,  4 Feb 2022 17:50:56 +0100	[thread overview]
Message-ID: <20220204165056.10572-1-marcin.szycik@linux.intel.com> (raw)
In-Reply-To: <20220204164929.10356-1-marcin.szycik@linux.intel.com>

From: Wojciech Drewek <wojciech.drewek@intel.com>

Add a function that checks if a net device type is GTP.

Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
---
 include/net/gtp.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/net/gtp.h b/include/net/gtp.h
index 0e16ebb2a82d..ae915dd33d20 100644
--- a/include/net/gtp.h
+++ b/include/net/gtp.h
@@ -27,6 +27,12 @@ struct gtp1_header {	/* According to 3GPP TS 29.060. */
 	__be32	tid;
 } __attribute__ ((packed));
 
+static inline bool netif_is_gtp(const struct net_device *dev)
+{
+	return dev->rtnl_link_ops &&
+		!strcmp(dev->rtnl_link_ops->kind, "gtp");
+}
+
 #define GTP1_F_NPDU	0x01
 #define GTP1_F_SEQ	0x02
 #define GTP1_F_EXTHDR	0x04
-- 
2.31.1

