linux-kernel - [PATCH 5.4 040/129] gtp: add GTPA_LINK info to msg sent to userspace

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Date:   Tue,  8 Sep 2020 17:24:41 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Nicolas Dichtel <nicolas.dichtel@...nd.com>,
        Gabriel Ganne <gabriel.ganne@...nd.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 040/129] gtp: add GTPA_LINK info to msg sent to userspace

From: Nicolas Dichtel <nicolas.dichtel@...nd.com>

[ Upstream commit b274e47d9e3f4dcd4ad4028a316ec22dc4533ac7 ]

During a dump, this attribute is essential, it enables the userspace to
know on which interface the context is linked to.

Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
Tested-by: Gabriel Ganne <gabriel.ganne@...nd.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/gtp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index d89ec99abcd63..634bdea38ecb3 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -1182,6 +1182,7 @@ static int gtp_genl_fill_info(struct sk_buff *skb, u32 snd_portid, u32 snd_seq,
 		goto nlmsg_failure;
 
 	if (nla_put_u32(skb, GTPA_VERSION, pctx->gtp_version) ||
+	    nla_put_u32(skb, GTPA_LINK, pctx->dev->ifindex) ||
 	    nla_put_be32(skb, GTPA_PEER_ADDRESS, pctx->peer_addr_ip4.s_addr) ||
 	    nla_put_be32(skb, GTPA_MS_ADDRESS, pctx->ms_addr_ip4.s_addr))
 		goto nla_put_failure;
-- 
2.25.1