This is a note to let you know that I've just added the patch titled gtp: add GTPA_LINK info to msg sent to userspace to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: gtp-add-gtpa_link-info-to-msg-sent-to-userspace.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 07a2da868915dcf7af9996412a585b795f50febc Author: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx> Date: Tue Aug 25 14:59:40 2020 +0200 gtp: add GTPA_LINK info to msg sent to userspace [ 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@xxxxxxxxx> Tested-by: Gabriel Ganne <gabriel.ganne@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> 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;