[PATCH net] nfp: flower: fix ABI mismatch between driver and firmware

[Simon Horman]

From: Louis Peens <louis.pe...@netronome.com>

Fix an issue where the driver wrongly detected ipv6 neighbour updates
from the NFP as corrupt. Add a reserved field on the kernel side so
it is similar to the ipv4 version of the struct and has space for the
extra bytes from the card.

Fixes: 9ea9bfa12240 ("nfp: flower: support ipv6 tunnel keep-alive messages from 
fw")

Signed-off-by: Louis Peens <louis.pe...@netronome.com>
Signed-off-by: Simon Horman <simon.hor...@netronome.com>
---
 drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c 
b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
index 2df3deedf9fd..7248d248f604 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
@@ -61,6 +61,7 @@ struct nfp_tun_active_tuns {
  * @flags:             options part of the request
  * @tun_info.ipv6:             dest IPv6 address of active route
  * @tun_info.egress_port:      port the encapsulated packet egressed
+ * @tun_info.extra:            reserved for future use
  * @tun_info:          tunnels that have sent traffic in reported period
  */
 struct nfp_tun_active_tuns_v6 {
@@ -70,6 +71,7 @@ struct nfp_tun_active_tuns_v6 {
        struct route_ip_info_v6 {
                struct in6_addr ipv6;
                __be32 egress_port;
+               __be32 extra[2];
        } tun_info[];
 };
 
-- 
2.20.1