Commit af4c6641 authored by Eric W. Biederman's avatar Eric W. Biederman

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: default avatarDavid S. Miller <davem@davemloft.net>
Acked-by: default avatarSerge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
parent 9eea9515
......@@ -188,7 +188,8 @@ struct tcf_proto_ops {
unsigned long (*get)(struct tcf_proto*, u32 handle);
void (*put)(struct tcf_proto*, unsigned long);
int (*change)(struct tcf_proto*, unsigned long,
int (*change)(struct sk_buff *,
struct tcf_proto*, unsigned long,
u32 handle, struct nlattr **,
unsigned long *);
int (*delete)(struct tcf_proto*, unsigned long);
......
......@@ -319,7 +319,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
}
}
err = tp->ops->change(tp, cl, t->tcm_handle, tca, &fh);
err = tp->ops->change(skb, tp, cl, t->tcm_handle, tca, &fh);
if (err == 0) {
if (tp_created) {
spin_lock_bh(root_lock);
......
......@@ -162,7 +162,8 @@ static int basic_set_parms(struct tcf_proto *tp, struct basic_filter *f,
return err;
}
static int basic_change(struct tcf_proto *tp, unsigned long base, u32 handle,
static int basic_change(struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base, u32 handle,
struct nlattr **tca, unsigned long *arg)
{
int err;
......
......@@ -151,7 +151,8 @@ static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = {
[TCA_CGROUP_EMATCHES] = { .type = NLA_NESTED },
};
static int cls_cgroup_change(struct tcf_proto *tp, unsigned long base,
static int cls_cgroup_change(struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base,
u32 handle, struct nlattr **tca,
unsigned long *arg)
{
......
......@@ -347,7 +347,8 @@ static const struct nla_policy flow_policy[TCA_FLOW_MAX + 1] = {
[TCA_FLOW_PERTURB] = { .type = NLA_U32 },
};
static int flow_change(struct tcf_proto *tp, unsigned long base,
static int flow_change(struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base,
u32 handle, struct nlattr **tca,
unsigned long *arg)
{
......
......@@ -233,7 +233,8 @@ fw_change_attrs(struct tcf_proto *tp, struct fw_filter *f,
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)
......
......@@ -427,7 +427,8 @@ static int route4_set_parms(struct tcf_proto *tp, unsigned long base,
return err;
}
static int route4_change(struct tcf_proto *tp, unsigned long base,
static int route4_change(struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base,
u32 handle,
struct nlattr **tca,
unsigned long *arg)
......
......@@ -416,7 +416,8 @@ static const struct nla_policy rsvp_policy[TCA_RSVP_MAX + 1] = {
[TCA_RSVP_PINFO] = { .len = sizeof(struct tc_rsvp_pinfo) },
};
static int rsvp_change(struct tcf_proto *tp, unsigned long base,
static int rsvp_change(struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base,
u32 handle,
struct nlattr **tca,
unsigned long *arg)
......
......@@ -332,7 +332,8 @@ tcindex_set_parms(struct tcf_proto *tp, unsigned long base, u32 handle,
}
static int
tcindex_change(struct tcf_proto *tp, unsigned long base, u32 handle,
tcindex_change(struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base, u32 handle,
struct nlattr **tca, unsigned long *arg)
{
struct nlattr *opt = tca[TCA_OPTIONS];
......
......@@ -544,7 +544,8 @@ static int u32_set_parms(struct tcf_proto *tp, unsigned long base,
return err;
}
static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle,
static int u32_change(struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base, u32 handle,
struct nlattr **tca,
unsigned long *arg)
{
......
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