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| author | David S. Miller <davem@davemloft.net> | 2018-06-03 09:31:58 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-06-03 09:31:58 -0400 |
| commit | 9c54aeb03a6d65a5834bd92376e921cbac6dfb8f (patch) | |
| tree | 70441095d58678711d68cfef4934765251425d1f /net/ipv6/ip6_tunnel.c | |
| parent | eaf47b17a77fda841a1102d76c15161ee438b347 (diff) | |
| parent | 918fe1b3157978ada4267468008c5f89ef101e7d (diff) | |
| download | linux-9c54aeb03a6d65a5834bd92376e921cbac6dfb8f.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Filling in the padding slot in the bpf structure as a bug fix in 'ne' overlapped with actually using that padding area for something in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_tunnel.c')
| -rw-r--r-- | net/ipv6/ip6_tunnel.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index da66aaac51ce..00e138a44cbb 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1692,8 +1692,13 @@ int ip6_tnl_change_mtu(struct net_device *dev, int new_mtu) if (new_mtu < ETH_MIN_MTU) return -EINVAL; } - if (new_mtu > 0xFFF8 - dev->hard_header_len) - return -EINVAL; + if (tnl->parms.proto == IPPROTO_IPV6 || tnl->parms.proto == 0) { + if (new_mtu > IP6_MAX_MTU - dev->hard_header_len) + return -EINVAL; + } else { + if (new_mtu > IP_MAX_MTU - dev->hard_header_len) + return -EINVAL; + } dev->mtu = new_mtu; return 0; } @@ -1841,7 +1846,7 @@ ip6_tnl_dev_init_gen(struct net_device *dev) if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT)) dev->mtu -= 8; dev->min_mtu = ETH_MIN_MTU; - dev->max_mtu = 0xFFF8 - dev->hard_header_len; + dev->max_mtu = IP6_MAX_MTU - dev->hard_header_len; return 0; |