Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 077/109] gtp: clear DF bit on GTP packet tx | Date | Thu, 7 Dec 2017 13:57:01 +0100 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Andreas Schultz <aschultz@tpip.net>
[ Upstream commit c6ce1d08eede4c2968ed08aafa3165e8e183c5a1 ]
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> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/gtp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -612,7 +612,7 @@ static netdev_tx_t gtp_dev_xmit(struct s 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;
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