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gtp: clear DF bit on GTP packet tx

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3GPP TS 29.281 and 3GPP TS 29.060 imply that GTP-U packets should be
sent with the DF bit cleared. For example 3GPP TS 29.060, Release 8,
Section 13.2.2:

> Backbone router: Any router in the backbone may fragment the GTP
> packet if needed, according to IPv4.

Signed-off-by: Andreas Schultz <aschultz@tpip.net>
Acked-by: Harald Welte <laforge@netfilter.org>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andreas Schultz 2017-01-27 10:40:57 +01:00 committed by David S. Miller
parent ab729823ec
commit c6ce1d08ee
1 changed files with 1 additions and 1 deletions
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2
drivers/net/gtp.c
View file

@ -612,7 +612,7 @@ static netdev_tx_t gtp_dev_xmit(struct sk_buff *skb, struct net_device *dev)
pktinfo.fl4.saddr, pktinfo.fl4.daddr,
pktinfo.iph->tos,
ip4_dst_hoplimit(&pktinfo.rt->dst),
htons(IP_DF),
0,
pktinfo.gtph_port, pktinfo.gtph_port,
true, false);
break;