-always_inline void
-esp_replay_advance (ipsec_sa_t * sa, u32 seq)
-{
- u32 pos;
-
- if (seq > sa->last_seq)
- {
- pos = seq - sa->last_seq;
- if (pos < ESP_WINDOW_SIZE)
- sa->replay_window = ((sa->replay_window) << pos) | 1;
- else
- sa->replay_window = 1;
- sa->last_seq = seq;
- }
- else
- {
- pos = sa->last_seq - seq;
- sa->replay_window |= (1ULL << pos);
- }
-}
-
-always_inline void
-esp_replay_advance_esn (ipsec_sa_t * sa, u32 seq)
-{
- int wrap = sa->seq_hi - sa->last_seq_hi;
- u32 pos;
-
- if (wrap == 0 && seq > sa->last_seq)
- {
- pos = seq - sa->last_seq;
- if (pos < ESP_WINDOW_SIZE)
- sa->replay_window = ((sa->replay_window) << pos) | 1;
- else
- sa->replay_window = 1;
- sa->last_seq = seq;
- }
- else if (wrap > 0)
- {
- pos = ~seq + sa->last_seq + 1;
- if (pos < ESP_WINDOW_SIZE)
- sa->replay_window = ((sa->replay_window) << pos) | 1;
- else
- sa->replay_window = 1;
- sa->last_seq = seq;
- sa->last_seq_hi = sa->seq_hi;
- }
- else if (wrap < 0)
- {
- pos = ~seq + sa->last_seq + 1;
- sa->replay_window |= (1ULL << pos);
- }
- else
- {
- pos = sa->last_seq - seq;
- sa->replay_window |= (1ULL << pos);
- }
-}
-