path: root/net/dccp/ccid.h
diff options
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/ccid.h
parentqeth: get rid of extra argument after printk to dev_* conversion (diff)
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/ccid.h')
1 files changed, 7 insertions, 4 deletions
diff --git a/net/dccp/ccid.h b/net/dccp/ccid.h
index 18f69423a708..75c21c52ed7a 100644
--- a/net/dccp/ccid.h
+++ b/net/dccp/ccid.h
@@ -29,7 +29,6 @@ struct tcp_info;
* @ccid_id: numerical CCID ID (up to %CCID_MAX, cf. table 5 in RFC 4340, 10.)
* @ccid_ccmps: the CCMPS including network/transport headers (0 when disabled)
* @ccid_name: alphabetical identifier string for @ccid_id
- * @ccid_owner: module which implements/owns this CCID
* @ccid_hc_{r,t}x_slab: memory pool for the receiver/sender half-connection
* @ccid_hc_{r,t}x_obj_size: size of the receiver/sender half-connection socket
@@ -48,7 +47,6 @@ struct ccid_operations {
unsigned char ccid_id;
__u32 ccid_ccmps;
const char *ccid_name;
- struct module *ccid_owner;
struct kmem_cache *ccid_hc_rx_slab,
__u32 ccid_hc_rx_obj_size,
@@ -90,8 +88,13 @@ struct ccid_operations {
int __user *optlen);
-extern int ccid_register(struct ccid_operations *ccid_ops);
-extern int ccid_unregister(struct ccid_operations *ccid_ops);
+extern struct ccid_operations ccid2_ops;
+extern struct ccid_operations ccid3_ops;
+extern int ccid_initialize_builtins(void);
+extern void ccid_cleanup_builtins(void);
struct ccid {
struct ccid_operations *ccid_ops;