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authorEric W. Biederman <ebiederm@xmission.com>2012-05-25 13:42:45 -0600
committerEric W. Biederman <ebiederm@xmission.com>2012-08-14 21:55:28 -0700
commitaf4c6641f5ad445fe6d0832da42406dbd9a37ce4 (patch)
treed1ef8c8fafb5cde0f55b7efd174c3d2032a58180 /net/sched/cls_fw.c
parent9eea9515cb5f3a4416511ef54b1cc98ca04869a1 (diff)
downloadlinux-af4c6641f5ad445fe6d0832da42406dbd9a37ce4.tar.gz
net sched: Pass the skb into change so it can access NETLINK_CB
cls_flow.c plays with uids and gids.  Unless I misread that
code it is possible for classifiers to depend on the specific uid and
gid values.  Therefore I need to know the user namespace of the
netlink socket that is installing the packet classifiers.  Pass
in the rtnetlink skb so I can access the NETLINK_CB of the passed
packet.  In particular I want access to sk_user_ns(NETLINK_CB(in_skb).ssk).

Pass in not the user namespace but the incomming rtnetlink skb into
the the classifier change routines as that is generally the more useful
parameter.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'net/sched/cls_fw.c')
-rw-r--r--net/sched/cls_fw.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 8384a4797240..4075a0aef2aa 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -233,7 +233,8 @@ errout:
 	return err;
 }
 
-static int fw_change(struct tcf_proto *tp, unsigned long base,
+static int fw_change(struct sk_buff *in_skb,
+		     struct tcf_proto *tp, unsigned long base,
 		     u32 handle,
 		     struct nlattr **tca,
 		     unsigned long *arg)