diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2016-03-16 01:42:51 +0100 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2022-04-19 00:50:11 +0300 |
| commit | d7cb0ec47fc40d3903c884a949dfa78fb170d004 (patch) | |
| tree | de78186f539d8a94e4e09a214c30cb958b5b0772 /include | |
| parent | 49d7a6877aebde96cdc7f369facb260b4ebc6ce5 (diff) | |
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>
Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
Diffstat (limited to 'include')
| -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 74bc08d82e14..4e5fec55b7a5 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> @@ -56,6 +58,11 @@ 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; u8 options_len; |