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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2009-01-04 21:42:53 -0800
committerDavid S. Miller <davem@davemloft.net>2009-01-04 21:42:53 -0800
commitddebc973c56b51b4e5d84d606f0430d81b895d67 (patch)
treecebe0e4461346072b2063132fc1d9cf8c3e148f1 /net/dccp/proto.c
parent6ea2fde13abd3444008ab5e9585f9ed249e6047e (diff)
downloadlinux-ddebc973c56b51b4e5d84d606f0430d81b895d67.tar.bz2
dccp: Lockless integration of CCID congestion-control plugins
Based on Arnaldo's earlier patch, this patch integrates the standardised CCID congestion control plugins (CCID-2 and CCID-3) of DCCP with dccp.ko: * enables a faster connection path by eliminating the need to always go through the CCID registration lock; * updates the implementation to use only a single array whose size equals the number of configured CCIDs instead of the maximum (256); * since the CCIDs are now fixed array elements, synchronization is no longer needed, simplifying use and implementation. CCID-2 is suggested as minimum for a basic DCCP implementation (RFC 4340, 10); CCID-3 is a standards-track CCID supported by RFC 4342 and RFC 5348. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/proto.c')
-rw-r--r--net/dccp/proto.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 1747ccae8e8d..945b4d5d23b3 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -1118,9 +1118,15 @@ static int __init dccp_init(void)
if (rc)
goto out_ackvec_exit;
+ rc = ccid_initialize_builtins();
+ if (rc)
+ goto out_sysctl_exit;
+
dccp_timestamping_init();
out:
return rc;
+out_sysctl_exit:
+ dccp_sysctl_exit();
out_ackvec_exit:
dccp_ackvec_exit();
out_free_dccp_mib:
@@ -1143,6 +1149,7 @@ out_free_percpu:
static void __exit dccp_fini(void)
{
+ ccid_cleanup_builtins();
dccp_mib_exit();
free_pages((unsigned long)dccp_hashinfo.bhash,
get_order(dccp_hashinfo.bhash_size *