diff options
| author | John Hurley <john.hurley@netronome.com> | 2018-08-07 17:35:58 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-08-07 12:22:14 -0700 |
| commit | 2a43747147699c6187d8508b40a28a50f42b0ee5 (patch) | |
| tree | 4caea8d0187e252e96beee37d93412f6c8d485a9 /drivers/net/ethernet/netronome/nfp/flower/action.c | |
| parent | 50ee42b9ccb39c7a5c41eaae3199675a6ced9d49 (diff) | |
| download | linux-2a43747147699c6187d8508b40a28a50f42b0ee5.tar.bz2 | |
nfp: flower: set ip tunnel ttl from encap action
The TTL for encapsulating headers in IPv4 UDP tunnels is taken from a
route lookup. Modify this to first check if a user has specified a TTL to
be used in the TC action.
Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/flower/action.c')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/flower/action.c | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/flower/action.c b/drivers/net/ethernet/netronome/nfp/flower/action.c index e56b815a8dc6..a79d078ab3e8 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/action.c +++ b/drivers/net/ethernet/netronome/nfp/flower/action.c @@ -238,18 +238,12 @@ nfp_fl_set_ipv4_udp_tun(struct nfp_fl_set_ipv4_udp_tun *set_tun, size_t act_size = sizeof(struct nfp_fl_set_ipv4_udp_tun); struct ip_tunnel_info *ip_tun = tcf_tunnel_info(action); u32 tmp_set_ip_tun_type_index = 0; - struct flowi4 flow = {}; /* Currently support one pre-tunnel so index is always 0. */ int pretun_idx = 0; - struct rtable *rt; - struct net *net; - int err; if (ip_tun->options_len) return -EOPNOTSUPP; - net = dev_net(netdev); - set_tun->head.jump_id = NFP_FL_ACTION_OPCODE_SET_IPV4_TUNNEL; set_tun->head.len_lw = act_size >> NFP_FL_LW_SIZ; @@ -261,19 +255,28 @@ nfp_fl_set_ipv4_udp_tun(struct nfp_fl_set_ipv4_udp_tun *set_tun, set_tun->tun_type_index = cpu_to_be32(tmp_set_ip_tun_type_index); set_tun->tun_id = ip_tun->key.tun_id; - /* Do a route lookup to determine ttl - if fails then use default. - * Note that CONFIG_INET is a requirement of CONFIG_NET_SWITCHDEV so - * must be defined here. - */ - flow.daddr = ip_tun->key.u.ipv4.dst; - flow.flowi4_proto = IPPROTO_UDP; - rt = ip_route_output_key(net, &flow); - err = PTR_ERR_OR_ZERO(rt); - if (!err) { - set_tun->ttl = ip4_dst_hoplimit(&rt->dst); - ip_rt_put(rt); + if (ip_tun->key.ttl) { + set_tun->ttl = ip_tun->key.ttl; } else { - set_tun->ttl = net->ipv4.sysctl_ip_default_ttl; + struct net *net = dev_net(netdev); + struct flowi4 flow = {}; + struct rtable *rt; + int err; + + /* Do a route lookup to determine ttl - if fails then use + * default. Note that CONFIG_INET is a requirement of + * CONFIG_NET_SWITCHDEV so must be defined here. + */ + flow.daddr = ip_tun->key.u.ipv4.dst; + flow.flowi4_proto = IPPROTO_UDP; + rt = ip_route_output_key(net, &flow); + err = PTR_ERR_OR_ZERO(rt); + if (!err) { + set_tun->ttl = ip4_dst_hoplimit(&rt->dst); + ip_rt_put(rt); + } else { + set_tun->ttl = net->ipv4.sysctl_ip_default_ttl; + } } set_tun->tos = ip_tun->key.tos; |