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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2008-09-04 07:30:19 +0200
committerGerrit Renker <gerrit@erg.abdn.ac.uk>2008-09-04 07:45:26 +0200
commit828755cee087e4a34f45d6c9db661ccd0631cc6d (patch)
tree07e687e6f5c559a49467ca3f56117ec58d9549b3 /net/dccp/feat.c
parent3001fc0569651f2d0c3b45adc991351471b0c382 (diff)
downloadop-kernel-dev-828755cee087e4a34f45d6c9db661ccd0631cc6d.zip
op-kernel-dev-828755cee087e4a34f45d6c9db661ccd0631cc6d.tar.gz
dccp: Per-socket initialisation of feature negotiation
This provides feature-negotiation initialisation for both DCCP sockets and DCCP request_sockets, to support feature negotiation during connection setup. It also resolves a FIXME regarding the congestion control initialisation. Thanks to Wei Yongjun for help with the IPv6 side of this patch. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Diffstat (limited to 'net/dccp/feat.c')
-rw-r--r--net/dccp/feat.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/net/dccp/feat.c b/net/dccp/feat.c
index 2ec2cd1..faade82 100644
--- a/net/dccp/feat.c
+++ b/net/dccp/feat.c
@@ -279,6 +279,25 @@ void dccp_feat_list_purge(struct list_head *fn_list)
}
EXPORT_SYMBOL_GPL(dccp_feat_list_purge);
+/* generate @to as full clone of @from - @to must not contain any nodes */
+int dccp_feat_clone_list(struct list_head const *from, struct list_head *to)
+{
+ struct dccp_feat_entry *entry, *new;
+
+ INIT_LIST_HEAD(to);
+ list_for_each_entry(entry, from, node) {
+ new = dccp_feat_clone_entry(entry);
+ if (new == NULL)
+ goto cloning_failed;
+ list_add_tail(&new->node, to);
+ }
+ return 0;
+
+cloning_failed:
+ dccp_feat_list_purge(to);
+ return -ENOMEM;
+}
+
int dccp_feat_change(struct dccp_minisock *dmsk, u8 type, u8 feature,
u8 *val, u8 len, gfp_t gfp)
{
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