diff options
Diffstat (limited to 'net/dccp/ccids/lib/packet_history.h')
| -rw-r--r-- | net/dccp/ccids/lib/packet_history.h | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/net/dccp/ccids/lib/packet_history.h b/net/dccp/ccids/lib/packet_history.h index 24edd8df54b..c7eeda49cb2 100644 --- a/net/dccp/ccids/lib/packet_history.h +++ b/net/dccp/ccids/lib/packet_history.h @@ -118,16 +118,43 @@ static inline struct tfrc_rx_hist_entry * return h->ring[h->loss_start]; } +/* initialise loss detection and disable RTT sampling */ +static inline void tfrc_rx_hist_loss_indicated(struct tfrc_rx_hist *h) +{ + h->loss_count = 1; +} + +/* indicate whether previously a packet was detected missing */ +static inline int tfrc_rx_hist_loss_pending(const struct tfrc_rx_hist *h) +{ + return h->loss_count; +} + +/* any data packets missing between last reception and skb ? */ +static inline int tfrc_rx_hist_new_loss_indicated(struct tfrc_rx_hist *h, + const struct sk_buff *skb, + u32 ndp) +{ + int delta = dccp_delta_seqno(tfrc_rx_hist_last_rcv(h)->tfrchrx_seqno, + DCCP_SKB_CB(skb)->dccpd_seq); + + if (delta > 1 && ndp < delta) + tfrc_rx_hist_loss_indicated(h); + + return tfrc_rx_hist_loss_pending(h); +} + extern void tfrc_rx_hist_add_packet(struct tfrc_rx_hist *h, const struct sk_buff *skb, const u32 ndp); extern int tfrc_rx_hist_duplicate(struct tfrc_rx_hist *h, struct sk_buff *skb); -extern int tfrc_rx_hist_new_loss_indicated(struct tfrc_rx_hist *h, - const struct sk_buff *skb, u32 ndp); + struct tfrc_loss_hist; -extern int tfrc_rx_handle_loss(struct tfrc_rx_hist *, struct tfrc_loss_hist *, +extern int tfrc_rx_handle_loss(struct tfrc_rx_hist *h, + struct tfrc_loss_hist *lh, struct sk_buff *skb, u32 ndp, - u32 (*first_li)(struct sock *), struct sock *); + u32 (*first_li)(struct sock *sk), + struct sock *sk); extern u32 tfrc_rx_hist_sample_rtt(struct tfrc_rx_hist *h, const struct sk_buff *skb); extern int tfrc_rx_hist_alloc(struct tfrc_rx_hist *h); |