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| author |   Guillaume Nault <g.nault@alphalink.fr> | 2018-08-10 13:21:55 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-08-11 12:13:49 -0700 |
| commit | d6a61ec936676dbe25a6eb76e1229787dc2fbba8 (patch) | |
| tree | 6365ef6a97498aee99a5131bef45375d72d3d65a /net/l2tp/l2tp_core.h | |
| parent | Merge branch 'netsec-driver-improvements' (diff) | |
| download | linux-dev-d6a61ec936676dbe25a6eb76e1229787dc2fbba8.tar.xz linux-dev-d6a61ec936676dbe25a6eb76e1229787dc2fbba8.zip | |
l2tp: define l2tp_tunnel_uses_xfrm()
Use helper function to figure out if a tunnel is using ipsec.
Also, avoid accessing ->sk_policy directly since it's RCU protected.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_core.h')
| -rw-r--r-- | net/l2tp/l2tp_core.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h index 5804065dfbfb..04a9488c54b4 100644 --- a/net/l2tp/l2tp_core.h +++ b/net/l2tp/l2tp_core.h @@ -15,6 +15,10 @@ #include <net/dst.h> #include <net/sock.h> +#ifdef CONFIG_XFRM +#include <net/xfrm.h> +#endif + /* Just some random numbers */ #define L2TP_TUNNEL_MAGIC 0x42114DDA #define L2TP_SESSION_MAGIC 0x0C04EB7D @@ -284,6 +288,21 @@ static inline u32 l2tp_tunnel_dst_mtu(const struct l2tp_tunnel *tunnel) return mtu; } +#ifdef CONFIG_XFRM +static inline bool l2tp_tunnel_uses_xfrm(const struct l2tp_tunnel *tunnel) +{ + struct sock *sk = tunnel->sock; + + return sk && (rcu_access_pointer(sk->sk_policy[0]) || + rcu_access_pointer(sk->sk_policy[1])); +} +#else +static inline bool l2tp_tunnel_uses_xfrm(const struct l2tp_tunnel *tunnel) +{ + return false; +} +#endif + #define l2tp_printk(ptr, type, func, fmt, ...) \ do { \ if (((ptr)->debug) & (type)) \ |