diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2016-03-16 01:42:51 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-03-18 19:38:46 -0400 |
| commit | fca5fdf67de9e092fda23c9eb059ba968e7b5267 (patch) | |
| tree | 06aa42e0d7679a15e223a05acd202d2897252bb1 /include/net | |
| parent | 808c1b697c3c4dd2a7132882424c390b0d0acfb9 (diff) | |
| download | linux-fca5fdf67de9e092fda23c9eb059ba968e7b5267.tar.gz | |
ip_tunnels, bpf: define IP_TUNNEL_OPTS_MAX and use it
eBPF defines this as BPF_TUNLEN_MAX and OVS just uses the hard-coded value inside struct sw_flow_key. Thus, add and use IP_TUNNEL_OPTS_MAX for this, which makes the code a bit more generic and allows to remove BPF_TUNLEN_MAX from eBPF code. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/ip_tunnels.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h index 5dc2e454f866..c35dda9ec991 100644 --- a/include/net/ip_tunnels.h +++ b/include/net/ip_tunnels.h @@ -7,6 +7,8 @@ #include <linux/socket.h> #include <linux/types.h> #include <linux/u64_stats_sync.h> +#include <linux/bitops.h> + #include <net/dsfield.h> #include <net/gro_cells.h> #include <net/inet_ecn.h> @@ -57,6 +59,11 @@ struct ip_tunnel_key { #define IP_TUNNEL_INFO_TX 0x01 /* represents tx tunnel parameters */ #define IP_TUNNEL_INFO_IPV6 0x02 /* key contains IPv6 addresses */ +/* Maximum tunnel options length. */ +#define IP_TUNNEL_OPTS_MAX \ + GENMASK((FIELD_SIZEOF(struct ip_tunnel_info, \ + options_len) * BITS_PER_BYTE) - 1, 0) + struct ip_tunnel_info { struct ip_tunnel_key key; #ifdef CONFIG_DST_CACHE |