mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-29 13:53:33 +00:00
vti6: Fix dev->max_mtu setting
[ Upstream commitf8a554b4aa
] We shouldn't allow a tunnel to have IP_MAX_MTU as MTU, because another IPv6 header is going on top of our packets. Without this patch, we might end up building packets bigger than IP_MAX_MTU. Fixes:b96f9afee4
("ipv4/6: use core net MTU range checking") Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Acked-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
5815901c29
commit
b57f0fe6e3
1 changed files with 1 additions and 1 deletions
|
@ -852,7 +852,7 @@ static void vti6_dev_setup(struct net_device *dev)
|
|||
dev->hard_header_len = LL_MAX_HEADER + sizeof(struct ipv6hdr);
|
||||
dev->mtu = ETH_DATA_LEN;
|
||||
dev->min_mtu = IPV6_MIN_MTU;
|
||||
dev->max_mtu = IP_MAX_MTU;
|
||||
dev->max_mtu = IP_MAX_MTU - sizeof(struct ipv6hdr);
|
||||
dev->flags |= IFF_NOARP;
|
||||
dev->addr_len = sizeof(struct in6_addr);
|
||||
netif_keep_dst(dev);
|
||||
|
|
Loading…
Reference in a new issue