netdev - [PATCH net-next v6 5/7] gtp: Add support for checking GTP device type

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Date:   Fri, 18 Feb 2022 15:53:36 +0100
From:   Marcin Szycik <marcin.szycik@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     michal.swiatkowski@...ux.intel.com, wojciech.drewek@...el.com,
        davem@...emloft.net, kuba@...nel.org, pablo@...filter.org,
        laforge@...monks.org, osmocom-net-gprs@...ts.osmocom.org
Subject: [PATCH net-next v6 5/7] gtp: Add support for checking GTP device type

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

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

Signed-off-by: Wojciech Drewek <wojciech.drewek@...el.com>
Reviewed-by: Harald Welte <laforge@...monks.org>
---
 include/net/gtp.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/net/gtp.h b/include/net/gtp.h
index 23c2aaae8a42..c1d6169df331 100644
--- a/include/net/gtp.h
+++ b/include/net/gtp.h
@@ -63,6 +63,12 @@ struct gtp_pdu_session_info {	/* According to 3GPP TS 38.415. */
 	u8	qfi;
 };
 
+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