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, 35 insertions, 0 deletions
diff --git a/net/dccp/ccids/lib/packet_history.h b/net/dccp/ccids/lib/packet_history.h index 3dfd182b0e6..e58b0fcdc6a 100644 --- a/net/dccp/ccids/lib/packet_history.h +++ b/net/dccp/ccids/lib/packet_history.h @@ -84,6 +84,41 @@ struct tfrc_rx_hist { #define rtt_sample_prev loss_start }; +/** + * tfrc_rx_hist_index - index to reach n-th entry after loss_start + */ +static inline u8 tfrc_rx_hist_index(const struct tfrc_rx_hist *h, const u8 n) +{ + return (h->loss_start + n) & TFRC_NDUPACK; +} + +/** + * tfrc_rx_hist_last_rcv - entry with highest-received-seqno so far + */ +static inline struct tfrc_rx_hist_entry * + tfrc_rx_hist_last_rcv(const struct tfrc_rx_hist *h) +{ + return h->ring[tfrc_rx_hist_index(h, h->loss_count)]; +} + +/** + * tfrc_rx_hist_entry - return the n-th history entry after loss_start + */ +static inline struct tfrc_rx_hist_entry * + tfrc_rx_hist_entry(const struct tfrc_rx_hist *h, const u8 n) +{ + return h->ring[tfrc_rx_hist_index(h, n)]; +} + +/** + * tfrc_rx_hist_loss_prev - entry with highest-received-seqno before loss was detected + */ +static inline struct tfrc_rx_hist_entry * + tfrc_rx_hist_loss_prev(const struct tfrc_rx_hist *h) +{ + return h->ring[h->loss_start]; +} + extern void tfrc_rx_hist_add_packet(struct tfrc_rx_hist *h, const struct sk_buff *skb, const u32 ndp); |