};
struct xfrm_replay {
- int (*check)(struct xfrm_state *x,
- struct sk_buff *skb,
- __be32 net_seq);
int (*overflow)(struct xfrm_state *x, struct sk_buff *skb);
};
#ifdef CONFIG_XFRM
void xfrm_replay_advance(struct xfrm_state *x, __be32 net_seq);
+int xfrm_replay_check(struct xfrm_state *x, struct sk_buff *skb, __be32 net_seq);
void xfrm_replay_notify(struct xfrm_state *x, int event);
int xfrm_replay_recheck(struct xfrm_state *x, struct sk_buff *skb, __be32 net_seq);
return err;
}
-static int xfrm_replay_check(struct xfrm_state *x,
- struct sk_buff *skb, __be32 net_seq)
+static int xfrm_replay_check_legacy(struct xfrm_state *x,
+ struct sk_buff *skb, __be32 net_seq)
{
u32 diff;
u32 seq = ntohl(net_seq);
return -EINVAL;
}
+int xfrm_replay_check(struct xfrm_state *x,
+ struct sk_buff *skb, __be32 net_seq)
+{
+ switch (x->repl_mode) {
+ case XFRM_REPLAY_MODE_LEGACY:
+ break;
+ case XFRM_REPLAY_MODE_BMP:
+ return xfrm_replay_check_bmp(x, skb, net_seq);
+ case XFRM_REPLAY_MODE_ESN:
+ return xfrm_replay_check_esn(x, skb, net_seq);
+ }
+
+ return xfrm_replay_check_legacy(x, skb, net_seq);
+}
+
static int xfrm_replay_recheck_esn(struct xfrm_state *x,
struct sk_buff *skb, __be32 net_seq)
{
return xfrm_replay_recheck_esn(x, skb, net_seq);
}
- return xfrm_replay_check(x, skb, net_seq);
+ return xfrm_replay_check_legacy(x, skb, net_seq);
}
static void xfrm_replay_advance_esn(struct xfrm_state *x, __be32 net_seq)
}
static const struct xfrm_replay xfrm_replay_legacy = {
- .check = xfrm_replay_check,
.overflow = xfrm_replay_overflow_offload,
};
static const struct xfrm_replay xfrm_replay_bmp = {
- .check = xfrm_replay_check_bmp,
.overflow = xfrm_replay_overflow_offload_bmp,
};
static const struct xfrm_replay xfrm_replay_esn = {
- .check = xfrm_replay_check_esn,
.overflow = xfrm_replay_overflow_offload_esn,
};
#else
static const struct xfrm_replay xfrm_replay_legacy = {
- .check = xfrm_replay_check,
.overflow = xfrm_replay_overflow,
};
static const struct xfrm_replay xfrm_replay_bmp = {
- .check = xfrm_replay_check_bmp,
.overflow = xfrm_replay_overflow_bmp,
};
static const struct xfrm_replay xfrm_replay_esn = {
- .check = xfrm_replay_check_esn,
.overflow = xfrm_replay_overflow_esn,
};
#endif