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net: sched: propagate q and parent from caller down to tcf_fill_node
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The callers have this info, they will pass it down to tcf_fill_node.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jiri Pirko authored and David S. Miller committed Oct 16, 2017
1 parent 74e3be6 commit a10fa20
Showing 1 changed file with 35 additions and 20 deletions.
55 changes: 35 additions & 20 deletions net/sched/cls_api.c
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Original file line number Diff line number Diff line change
Expand Up @@ -420,8 +420,8 @@ static struct tcf_proto *tcf_chain_tp_find(struct tcf_chain *chain,
}

static int tcf_fill_node(struct net *net, struct sk_buff *skb,
struct tcf_proto *tp, void *fh, u32 portid,
u32 seq, u16 flags, int event)
struct tcf_proto *tp, struct Qdisc *q, u32 parent,
void *fh, u32 portid, u32 seq, u16 flags, int event)
{
struct tcmsg *tcm;
struct nlmsghdr *nlh;
Expand All @@ -434,8 +434,8 @@ static int tcf_fill_node(struct net *net, struct sk_buff *skb,
tcm->tcm_family = AF_UNSPEC;
tcm->tcm__pad1 = 0;
tcm->tcm__pad2 = 0;
tcm->tcm_ifindex = qdisc_dev(tp->q)->ifindex;
tcm->tcm_parent = tp->classid;
tcm->tcm_ifindex = qdisc_dev(q)->ifindex;
tcm->tcm_parent = parent;
tcm->tcm_info = TC_H_MAKE(tp->prio, tp->protocol);
if (nla_put_string(skb, TCA_KIND, tp->ops->kind))
goto nla_put_failure;
Expand All @@ -458,6 +458,7 @@ static int tcf_fill_node(struct net *net, struct sk_buff *skb,

static int tfilter_notify(struct net *net, struct sk_buff *oskb,
struct nlmsghdr *n, struct tcf_proto *tp,
struct Qdisc *q, u32 parent,
void *fh, int event, bool unicast)
{
struct sk_buff *skb;
Expand All @@ -467,7 +468,7 @@ static int tfilter_notify(struct net *net, struct sk_buff *oskb,
if (!skb)
return -ENOBUFS;

if (tcf_fill_node(net, skb, tp, fh, portid, n->nlmsg_seq,
if (tcf_fill_node(net, skb, tp, q, parent, fh, portid, n->nlmsg_seq,
n->nlmsg_flags, event) <= 0) {
kfree_skb(skb);
return -EINVAL;
Expand All @@ -482,6 +483,7 @@ static int tfilter_notify(struct net *net, struct sk_buff *oskb,

static int tfilter_del_notify(struct net *net, struct sk_buff *oskb,
struct nlmsghdr *n, struct tcf_proto *tp,
struct Qdisc *q, u32 parent,
void *fh, bool unicast, bool *last)
{
struct sk_buff *skb;
Expand All @@ -492,7 +494,7 @@ static int tfilter_del_notify(struct net *net, struct sk_buff *oskb,
if (!skb)
return -ENOBUFS;

if (tcf_fill_node(net, skb, tp, fh, portid, n->nlmsg_seq,
if (tcf_fill_node(net, skb, tp, q, parent, fh, portid, n->nlmsg_seq,
n->nlmsg_flags, RTM_DELTFILTER) <= 0) {
kfree_skb(skb);
return -EINVAL;
Expand All @@ -512,14 +514,15 @@ static int tfilter_del_notify(struct net *net, struct sk_buff *oskb,
}

static void tfilter_notify_chain(struct net *net, struct sk_buff *oskb,
struct Qdisc *q, u32 parent,
struct nlmsghdr *n,
struct tcf_chain *chain, int event)
{
struct tcf_proto *tp;

for (tp = rtnl_dereference(chain->filter_chain);
tp; tp = rtnl_dereference(tp->next))
tfilter_notify(net, oskb, n, tp, 0, event, false);
tfilter_notify(net, oskb, n, tp, q, parent, 0, event, false);
}

/* Add/change/delete/get a filter node */
Expand Down Expand Up @@ -638,7 +641,8 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
}

if (n->nlmsg_type == RTM_DELTFILTER && prio == 0) {
tfilter_notify_chain(net, skb, n, chain, RTM_DELTFILTER);
tfilter_notify_chain(net, skb, q, parent, n,
chain, RTM_DELTFILTER);
tcf_chain_flush(chain);
err = 0;
goto errout;
Expand Down Expand Up @@ -685,7 +689,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
if (!fh) {
if (n->nlmsg_type == RTM_DELTFILTER && t->tcm_handle == 0) {
tcf_chain_tp_remove(chain, &chain_info, tp);
tfilter_notify(net, skb, n, tp, fh,
tfilter_notify(net, skb, n, tp, q, parent, fh,
RTM_DELTFILTER, false);
tcf_proto_destroy(tp);
err = 0;
Expand All @@ -710,8 +714,8 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
}
break;
case RTM_DELTFILTER:
err = tfilter_del_notify(net, skb, n, tp, fh, false,
&last);
err = tfilter_del_notify(net, skb, n, tp, q, parent,
fh, false, &last);
if (err)
goto errout;
if (last) {
Expand All @@ -720,7 +724,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
}
goto errout;
case RTM_GETTFILTER:
err = tfilter_notify(net, skb, n, tp, fh,
err = tfilter_notify(net, skb, n, tp, q, parent, fh,
RTM_NEWTFILTER, true);
goto errout;
default:
Expand All @@ -734,7 +738,8 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
if (err == 0) {
if (tp_created)
tcf_chain_tp_insert(chain, &chain_info, tp);
tfilter_notify(net, skb, n, tp, fh, RTM_NEWTFILTER, false);
tfilter_notify(net, skb, n, tp, q, parent, fh,
RTM_NEWTFILTER, false);
} else {
if (tp_created)
tcf_proto_destroy(tp);
Expand All @@ -753,20 +758,23 @@ struct tcf_dump_args {
struct tcf_walker w;
struct sk_buff *skb;
struct netlink_callback *cb;
struct Qdisc *q;
u32 parent;
};

static int tcf_node_dump(struct tcf_proto *tp, void *n, struct tcf_walker *arg)
{
struct tcf_dump_args *a = (void *)arg;
struct net *net = sock_net(a->skb->sk);

return tcf_fill_node(net, a->skb, tp, n, NETLINK_CB(a->cb->skb).portid,
return tcf_fill_node(net, a->skb, tp, a->q, a->parent,
n, NETLINK_CB(a->cb->skb).portid,
a->cb->nlh->nlmsg_seq, NLM_F_MULTI,
RTM_NEWTFILTER);
}

static bool tcf_chain_dump(struct tcf_chain *chain, struct sk_buff *skb,
struct netlink_callback *cb,
static bool tcf_chain_dump(struct tcf_chain *chain, struct Qdisc *q, u32 parent,
struct sk_buff *skb, struct netlink_callback *cb,
long index_start, long *p_index)
{
struct net *net = sock_net(skb->sk);
Expand All @@ -788,7 +796,7 @@ static bool tcf_chain_dump(struct tcf_chain *chain, struct sk_buff *skb,
memset(&cb->args[1], 0,
sizeof(cb->args) - sizeof(cb->args[0]));
if (cb->args[1] == 0) {
if (tcf_fill_node(net, skb, tp, 0,
if (tcf_fill_node(net, skb, tp, q, parent, 0,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
RTM_NEWTFILTER) <= 0)
Expand All @@ -801,6 +809,8 @@ static bool tcf_chain_dump(struct tcf_chain *chain, struct sk_buff *skb,
arg.w.fn = tcf_node_dump;
arg.skb = skb;
arg.cb = cb;
arg.q = q;
arg.parent = parent;
arg.w.stop = 0;
arg.w.skip = cb->args[1] - 1;
arg.w.count = 0;
Expand All @@ -826,6 +836,7 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb)
const struct Qdisc_class_ops *cops;
long index_start;
long index;
u32 parent;
int err;

if (nlmsg_len(cb->nlh) < sizeof(*tcm))
Expand All @@ -839,10 +850,13 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb)
if (!dev)
return skb->len;

if (!tcm->tcm_parent)
parent = tcm->tcm_parent;
if (!parent) {
q = dev->qdisc;
else
parent = q->handle;
} else {
q = qdisc_lookup(dev, TC_H_MAJ(tcm->tcm_parent));
}
if (!q)
goto out;
cops = q->ops->cl_ops;
Expand All @@ -866,7 +880,8 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb)
if (tca[TCA_CHAIN] &&
nla_get_u32(tca[TCA_CHAIN]) != chain->index)
continue;
if (!tcf_chain_dump(chain, skb, cb, index_start, &index))
if (!tcf_chain_dump(chain, q, parent, skb, cb,
index_start, &index))
break;
}

Expand Down

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