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| author |   Xin Long <lucien.xin@gmail.com> | 2018-08-27 18:41:32 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-08-27 15:13:17 -0700 |
| commit | 84581bdae9587023cea1d139523f0ef0f28bd88d (patch) | |
| tree | f5af8a8c02fa85bd365680ab6b141487a6b6fdba /net/ipv4/ip_gre.c | |
| parent | sctp: remove useless start_fail from sctp_ht_iter in proc (diff) | |
| download | wireguard-linux-84581bdae9587023cea1d139523f0ef0f28bd88d.tar.xz wireguard-linux-84581bdae9587023cea1d139523f0ef0f28bd88d.zip | |
erspan: set erspan_ver to 1 by default when adding an erspan dev
After erspan_ver is introudced, if erspan_ver is not set in iproute, its
value will be left 0 by default. Since Commit 02f99df1875c ("erspan: fix
invalid erspan version."), it has broken the traffic due to the version
check in erspan_xmit if users are not aware of 'erspan_ver' param, like
using an old version of iproute.
To fix this compatibility problem, it sets erspan_ver to 1 by default
when adding an erspan dev in erspan_setup. Note that we can't do it in
ipgre_netlink_parms, as this function is also used by ipgre_changelink.
Fixes: 02f99df1875c ("erspan: fix invalid erspan version.")
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_gre.c')
| -rw-r--r-- | net/ipv4/ip_gre.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 51a5d06085ac..ae714aecc31c 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1508,11 +1508,14 @@ nla_put_failure: static void erspan_setup(struct net_device *dev) { + struct ip_tunnel *t = netdev_priv(dev); + ether_setup(dev); dev->netdev_ops = &erspan_netdev_ops; dev->priv_flags &= ~IFF_TX_SKB_SHARING; dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; ip_tunnel_setup(dev, erspan_net_id); + t->erspan_ver = 1; } static const struct nla_policy ipgre_policy[IFLA_GRE_MAX + 1] = { |