X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fdccp%2Fccids%2Fccid2.h;h=f585d330e1e55cba3e41c80a082a4431804b0167;hb=951cc93a7493a81a47e20231441bc6cf17c98a37;hp=e9985dafc2c7003a036adafd5b4ad7e0eb599187;hpb=db9effe99adc67c53e6aedadadd2aa9a02342e48;p=pandora-kernel.git

diff --git a/net/dccp/ccids/ccid2.h b/net/dccp/ccids/ccid2.h
index e9985dafc2c7..f585d330e1e5 100644
--- a/net/dccp/ccids/ccid2.h
+++ b/net/dccp/ccids/ccid2.h
@@ -53,6 +53,10 @@ struct ccid2_seq {
  * @tx_rttvar:		     moving average/maximum of @mdev_max
  * @tx_rto:		     RTO value deriving from SRTT and RTTVAR (RFC 2988)
  * @tx_rtt_seq:		     to decay RTTVAR at most once per flight
+ * @tx_cwnd_used:	     actually used cwnd, W_used of RFC 2861
+ * @tx_expected_wnd:	     moving average of @tx_cwnd_used
+ * @tx_cwnd_stamp:	     to track idle periods in CWV
+ * @tx_lsndtime:	     last time (in jiffies) a data packet was sent
  * @tx_rpseq:		     last consecutive seqno
  * @tx_rpdupack:	     dupacks since rpseq
  * @tx_av_chunks:	     list of Ack Vectors received on current skb
@@ -76,6 +80,12 @@ struct ccid2_hc_tx_sock {
 	u64			tx_rtt_seq:48;
 	struct timer_list	tx_rtotimer;
 
+	/* Congestion Window validation (optional, RFC 2861) */
+	u32			tx_cwnd_used,
+				tx_expected_wnd,
+				tx_cwnd_stamp,
+				tx_lsndtime;
+
 	u64			tx_rpseq;
 	int			tx_rpdupack;
 	u32			tx_last_cong;
@@ -88,8 +98,21 @@ static inline bool ccid2_cwnd_network_limited(struct ccid2_hc_tx_sock *hc)
 	return hc->tx_pipe >= hc->tx_cwnd;
 }
 
+/*
+ * Convert RFC 3390 larger initial window into an equivalent number of packets.
+ * This is based on the numbers specified in RFC 5681, 3.1.
+ */
+static inline u32 rfc3390_bytes_to_packets(const u32 smss)
+{
+	return smss <= 1095 ? 4 : (smss > 2190 ? 2 : 3);
+}
+
+/**
+ * struct ccid2_hc_rx_sock  -  Receiving end of CCID-2 half-connection
+ * @rx_num_data_pkts: number of data packets received since last feedback
+ */
 struct ccid2_hc_rx_sock {
-	int	rx_data;
+	u32	rx_num_data_pkts;
 };
 
 static inline struct ccid2_hc_tx_sock *ccid2_hc_tx_sk(const struct sock *sk)