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| author | Arnaldo Carvalho de Melo <acme@mandriva.com> | 2005-08-24 06:52:35 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2005-08-30 01:05:07 +0200 |
| commit | 2babe1f6fea717c36c008c878fe095d1ca5696c1 (patch) | |
| tree | f2ce23b6e5898a6bec8726f17104074516559397 /net/dccp/ccid.h | |
| parent | [CCID3]: Calculate the RTT in the RX half connection (diff) | |
| download | linux-2babe1f6fea717c36c008c878fe095d1ca5696c1.tar.xz linux-2babe1f6fea717c36c008c878fe095d1ca5696c1.zip | |
[DCCP]: Introduce dccp_get_info
And also hc_tx and hc_rx get_info functions for the CCIDs to fill in
information that is specific to them.
For now reusing struct tcp_info, later I'll try to figure out a better
solution, for now its really nice to get this kind of info:
[root@qemu ~]# ./ss -danemi
State Recv-Q Send-Q Local Addr:Port Peer Addr:Port
LISTEN 0 0 *:5001 *:* ino:628 sk:c1340040
mem:(r0,w0,f0,t0) cwnd:0 ssthresh:0
ESTAB 0 0 172.20.0.2:5001 172.20.0.1:32785 ino:629 sk:c13409a0
mem:(r0,w0,f0,t0) ts rto:1000 rtt:0.004/0 cwnd:0 ssthresh:0 rcv_rtt:61.377
This, for instance, shows that we're not congestion controlling ACKs,
as the above output is in the ttcp receiving host, and ttcp is a one
way app, i.e. the received never calls sendmsg, so
ccid_hc_tx_send_packet is never called, so the TX half connection
stays in TFRC_SSTATE_NO_SENT state and hctx_rtt is never calculated,
stays with the value set in ccid3_hc_tx_init, 4us, as show above in
milliseconds (0.004ms), upcoming patches will fix this.
rcv_rtt seems sane tho, matching ping results :-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/ccid.h')
| -rw-r--r-- | net/dccp/ccid.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/net/dccp/ccid.h b/net/dccp/ccid.h index c6767b282244..962f1e9e2f7e 100644 --- a/net/dccp/ccid.h +++ b/net/dccp/ccid.h @@ -50,6 +50,10 @@ struct ccid { struct sk_buff *skb, int len); void (*ccid_hc_tx_packet_sent)(struct sock *sk, int more, int len); + void (*ccid_hc_rx_get_info)(struct sock *sk, + struct tcp_info *info); + void (*ccid_hc_tx_get_info)(struct sock *sk, + struct tcp_info *info); }; extern int ccid_register(struct ccid *ccid); @@ -159,4 +163,18 @@ static inline void ccid_hc_rx_insert_options(struct ccid *ccid, struct sock *sk, if (ccid->ccid_hc_rx_insert_options != NULL) ccid->ccid_hc_rx_insert_options(sk, skb); } + +static inline void ccid_hc_rx_get_info(struct ccid *ccid, struct sock *sk, + struct tcp_info *info) +{ + if (ccid->ccid_hc_rx_get_info != NULL) + ccid->ccid_hc_rx_get_info(sk, info); +} + +static inline void ccid_hc_tx_get_info(struct ccid *ccid, struct sock *sk, + struct tcp_info *info) +{ + if (ccid->ccid_hc_tx_get_info != NULL) + ccid->ccid_hc_tx_get_info(sk, info); +} #endif /* _CCID_H */ |