diff options
Diffstat (limited to 'net/dccp/ccids/lib/packet_history.h')
| -rw-r--r-- | net/dccp/ccids/lib/packet_history.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/dccp/ccids/lib/packet_history.h b/net/dccp/ccids/lib/packet_history.h index e9d8097947d5..b7c87a1a2720 100644 --- a/net/dccp/ccids/lib/packet_history.h +++ b/net/dccp/ccids/lib/packet_history.h @@ -91,12 +91,16 @@ struct tfrc_rx_hist_entry { * @loss_count: Number of entries in circular history * @loss_start: Movable index (for loss detection) * @rtt_sample_prev: Used during RTT sampling, points to candidate entry + * @packet_size: Packet size in bytes (as per RFC 3448, 3.1) + * @bytes_recvd: Number of bytes received since last sending feedback */ struct tfrc_rx_hist { struct tfrc_rx_hist_entry *ring[TFRC_NDUPACK + 1]; u8 loss_count:2, loss_start:2; #define rtt_sample_prev loss_start + u32 packet_size, + bytes_recvd; }; /** @@ -140,6 +144,18 @@ static inline bool tfrc_rx_hist_loss_pending(const struct tfrc_rx_hist *h) return h->loss_count > 0; } +/* + * Accessor functions to retrieve parameters sampled by the RX history + */ +static inline u32 tfrc_rx_hist_packet_size(const struct tfrc_rx_hist *h) +{ + if (h->packet_size == 0) { + DCCP_WARN("No sample for s, using fallback\n"); + return TCP_MIN_RCVMSS; + } + return h->packet_size; +} + extern void tfrc_rx_hist_add_packet(struct tfrc_rx_hist *h, const struct sk_buff *skb, const u64 ndp); |