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| author | Joel Becker <jlbec@evilplan.org> | 2011-08-21 21:02:57 -0700 |
|---|---|---|
| committer | Joel Becker <jlbec@evilplan.org> | 2011-08-21 21:02:57 -0700 |
| commit | 99b1bb61b225c3eb4d3b196d4f1d041695b19a7e (patch) | |
| tree | 06cabdc34538f3b38a39e3b802ecc1a2ab2aae00 /net/dccp/ccids/ccid2.h | |
| parent | c7e25e6e0b0486492c5faaf6312b37413642c48e (diff) | |
| parent | 93862d5e1ab875664c6cc95254fc365028a48bb1 (diff) | |
| download | linux-99b1bb61b225c3eb4d3b196d4f1d041695b19a7e.tar.gz linux-99b1bb61b225c3eb4d3b196d4f1d041695b19a7e.tar.bz2 linux-99b1bb61b225c3eb4d3b196d4f1d041695b19a7e.zip | |
Merge branch 'mw-3.1-jul25' of git://oss.oracle.com/git/smushran/linux-2.6 into ocfs2-fixes
Diffstat (limited to 'net/dccp/ccids/ccid2.h')
| -rw-r--r-- | net/dccp/ccids/ccid2.h | 25 |
1 files changed, 24 insertions, 1 deletions
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) |