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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2006-11-13 13:23:52 -0200
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-02 21:22:18 -0800
commit2e2e9e92bd723244ea20fa488b1780111f2b05e1 (patch)
tree2e859b2b0aa17d2e18927fe110cdefad6c4f5fe6 /net/dccp/dccp.h
parente11d9d30802278af22e78d8c10f348b683670cd9 (diff)
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[DCCP]: Add sysctls to control retransmission behaviour
This adds 3 sysctls which govern the retransmission behaviour of DCCP control packets (3way handshake, feature negotiation). It removes 4 FIXMEs from the code. The close resemblance of sysctl variables to their TCP analogues is emphasised not only by their name, but also by giving them the same initial values. This is useful since there is not much practical experience with DCCP yet. Furthermore, with regard to the previous patch, it is now possible to limit the number of keepalive-Responses by setting net.dccp.default.request_retries (also a bit like in TCP). Lastly, added documentation of all existing DCCP sysctls. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Diffstat (limited to 'net/dccp/dccp.h')
-rw-r--r--net/dccp/dccp.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index d5c414b..e7b9607 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -64,6 +64,17 @@ extern void dccp_time_wait(struct sock *sk, int state, int timeo);
#define DCCP_XMIT_TIMEO 30000 /* Time/msecs for blocking transmit per packet */
+/* sysctl variables for DCCP */
+extern int sysctl_dccp_request_retries;
+extern int sysctl_dccp_retries1;
+extern int sysctl_dccp_retries2;
+extern int dccp_feat_default_sequence_window;
+extern int dccp_feat_default_rx_ccid;
+extern int dccp_feat_default_tx_ccid;
+extern int dccp_feat_default_ack_ratio;
+extern int dccp_feat_default_send_ack_vector;
+extern int dccp_feat_default_send_ndp_count;
+
/* is seq1 < seq2 ? */
static inline int before48(const u64 seq1, const u64 seq2)
{