summaryrefslogtreecommitdiff
path: root/net/sched/cls_api.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/sched/cls_api.c')
-rw-r--r--net/sched/cls_api.c62
1 files changed, 39 insertions, 23 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 668130f08903..5b4a95e8a1ee 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -488,7 +488,8 @@ static struct tcf_chain *tcf_chain_lookup_rcu(const struct tcf_block *block,
#endif
static int tc_chain_notify(struct tcf_chain *chain, struct sk_buff *oskb,
- u32 seq, u16 flags, int event, bool unicast);
+ u32 seq, u16 flags, int event, bool unicast,
+ struct netlink_ext_ack *extack);
static struct tcf_chain *__tcf_chain_get(struct tcf_block *block,
u32 chain_index, bool create,
@@ -521,7 +522,7 @@ static struct tcf_chain *__tcf_chain_get(struct tcf_block *block,
*/
if (is_first_reference && !by_act)
tc_chain_notify(chain, NULL, 0, NLM_F_CREATE | NLM_F_EXCL,
- RTM_NEWCHAIN, false);
+ RTM_NEWCHAIN, false, NULL);
return chain;
@@ -1817,7 +1818,8 @@ static int tcf_fill_node(struct net *net, struct sk_buff *skb,
struct tcf_proto *tp, struct tcf_block *block,
struct Qdisc *q, u32 parent, void *fh,
u32 portid, u32 seq, u16 flags, int event,
- bool terse_dump, bool rtnl_held)
+ bool terse_dump, bool rtnl_held,
+ struct netlink_ext_ack *extack)
{
struct tcmsg *tcm;
struct nlmsghdr *nlh;
@@ -1857,7 +1859,13 @@ static int tcf_fill_node(struct net *net, struct sk_buff *skb,
tp->ops->dump(net, tp, fh, skb, tcm, rtnl_held) < 0)
goto nla_put_failure;
}
+
+ if (extack && extack->_msg &&
+ nla_put_string(skb, TCA_EXT_WARN_MSG, extack->_msg))
+ goto nla_put_failure;
+
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
+
return skb->len;
out_nlmsg_trim:
@@ -1871,7 +1879,7 @@ static int tfilter_notify(struct net *net, struct sk_buff *oskb,
struct nlmsghdr *n, struct tcf_proto *tp,
struct tcf_block *block, struct Qdisc *q,
u32 parent, void *fh, int event, bool unicast,
- bool rtnl_held)
+ bool rtnl_held, struct netlink_ext_ack *extack)
{
struct sk_buff *skb;
u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
@@ -1883,7 +1891,7 @@ static int tfilter_notify(struct net *net, struct sk_buff *oskb,
if (tcf_fill_node(net, skb, tp, block, q, parent, fh, portid,
n->nlmsg_seq, n->nlmsg_flags, event,
- false, rtnl_held) <= 0) {
+ false, rtnl_held, extack) <= 0) {
kfree_skb(skb);
return -EINVAL;
}
@@ -1912,7 +1920,7 @@ static int tfilter_del_notify(struct net *net, struct sk_buff *oskb,
if (tcf_fill_node(net, skb, tp, block, q, parent, fh, portid,
n->nlmsg_seq, n->nlmsg_flags, RTM_DELTFILTER,
- false, rtnl_held) <= 0) {
+ false, rtnl_held, extack) <= 0) {
NL_SET_ERR_MSG(extack, "Failed to build del event notification");
kfree_skb(skb);
return -EINVAL;
@@ -1938,14 +1946,15 @@ 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 tcf_block *block, struct Qdisc *q,
u32 parent, struct nlmsghdr *n,
- struct tcf_chain *chain, int event)
+ struct tcf_chain *chain, int event,
+ struct netlink_ext_ack *extack)
{
struct tcf_proto *tp;
for (tp = tcf_get_next_proto(chain, NULL);
tp; tp = tcf_get_next_proto(chain, tp))
- tfilter_notify(net, oskb, n, tp, block,
- q, parent, NULL, event, false, true);
+ tfilter_notify(net, oskb, n, tp, block, q, parent, NULL,
+ event, false, true, extack);
}
static void tfilter_put(struct tcf_proto *tp, void *fh)
@@ -2156,7 +2165,7 @@ replay:
flags, extack);
if (err == 0) {
tfilter_notify(net, skb, n, tp, block, q, parent, fh,
- RTM_NEWTFILTER, false, rtnl_held);
+ RTM_NEWTFILTER, false, rtnl_held, extack);
tfilter_put(tp, fh);
/* q pointer is NULL for shared blocks */
if (q)
@@ -2284,7 +2293,7 @@ static int tc_del_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
if (prio == 0) {
tfilter_notify_chain(net, skb, block, q, parent, n,
- chain, RTM_DELTFILTER);
+ chain, RTM_DELTFILTER, extack);
tcf_chain_flush(chain, rtnl_held);
err = 0;
goto errout;
@@ -2308,7 +2317,7 @@ static int tc_del_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
tcf_proto_put(tp, rtnl_held, NULL);
tfilter_notify(net, skb, n, tp, block, q, parent, fh,
- RTM_DELTFILTER, false, rtnl_held);
+ RTM_DELTFILTER, false, rtnl_held, extack);
err = 0;
goto errout;
}
@@ -2452,7 +2461,7 @@ static int tc_get_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
err = -ENOENT;
} else {
err = tfilter_notify(net, skb, n, tp, block, q, parent,
- fh, RTM_NEWTFILTER, true, rtnl_held);
+ fh, RTM_NEWTFILTER, true, rtnl_held, NULL);
if (err < 0)
NL_SET_ERR_MSG(extack, "Failed to send filter notify message");
}
@@ -2490,7 +2499,7 @@ static int tcf_node_dump(struct tcf_proto *tp, void *n, struct tcf_walker *arg)
return tcf_fill_node(net, a->skb, tp, a->block, a->q, a->parent,
n, NETLINK_CB(a->cb->skb).portid,
a->cb->nlh->nlmsg_seq, NLM_F_MULTI,
- RTM_NEWTFILTER, a->terse_dump, true);
+ RTM_NEWTFILTER, a->terse_dump, true, NULL);
}
static bool tcf_chain_dump(struct tcf_chain *chain, struct Qdisc *q, u32 parent,
@@ -2524,7 +2533,7 @@ static bool tcf_chain_dump(struct tcf_chain *chain, struct Qdisc *q, u32 parent,
if (tcf_fill_node(net, skb, tp, block, q, parent, NULL,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
- RTM_NEWTFILTER, false, true) <= 0)
+ RTM_NEWTFILTER, false, true, NULL) <= 0)
goto errout;
cb->args[1] = 1;
}
@@ -2667,7 +2676,8 @@ static int tc_chain_fill_node(const struct tcf_proto_ops *tmplt_ops,
void *tmplt_priv, u32 chain_index,
struct net *net, struct sk_buff *skb,
struct tcf_block *block,
- u32 portid, u32 seq, u16 flags, int event)
+ u32 portid, u32 seq, u16 flags, int event,
+ struct netlink_ext_ack *extack)
{
unsigned char *b = skb_tail_pointer(skb);
const struct tcf_proto_ops *ops;
@@ -2704,7 +2714,12 @@ static int tc_chain_fill_node(const struct tcf_proto_ops *tmplt_ops,
goto nla_put_failure;
}
+ if (extack && extack->_msg &&
+ nla_put_string(skb, TCA_EXT_WARN_MSG, extack->_msg))
+ goto out_nlmsg_trim;
+
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
+
return skb->len;
out_nlmsg_trim:
@@ -2714,7 +2729,8 @@ nla_put_failure:
}
static int tc_chain_notify(struct tcf_chain *chain, struct sk_buff *oskb,
- u32 seq, u16 flags, int event, bool unicast)
+ u32 seq, u16 flags, int event, bool unicast,
+ struct netlink_ext_ack *extack)
{
u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
struct tcf_block *block = chain->block;
@@ -2728,7 +2744,7 @@ static int tc_chain_notify(struct tcf_chain *chain, struct sk_buff *oskb,
if (tc_chain_fill_node(chain->tmplt_ops, chain->tmplt_priv,
chain->index, net, skb, block, portid,
- seq, flags, event) <= 0) {
+ seq, flags, event, extack) <= 0) {
kfree_skb(skb);
return -EINVAL;
}
@@ -2756,7 +2772,7 @@ static int tc_chain_notify_delete(const struct tcf_proto_ops *tmplt_ops,
return -ENOBUFS;
if (tc_chain_fill_node(tmplt_ops, tmplt_priv, chain_index, net, skb,
- block, portid, seq, flags, RTM_DELCHAIN) <= 0) {
+ block, portid, seq, flags, RTM_DELCHAIN, NULL) <= 0) {
kfree_skb(skb);
return -EINVAL;
}
@@ -2908,11 +2924,11 @@ replay:
}
tc_chain_notify(chain, NULL, 0, NLM_F_CREATE | NLM_F_EXCL,
- RTM_NEWCHAIN, false);
+ RTM_NEWCHAIN, false, extack);
break;
case RTM_DELCHAIN:
tfilter_notify_chain(net, skb, block, q, parent, n,
- chain, RTM_DELTFILTER);
+ chain, RTM_DELTFILTER, extack);
/* Flush the chain first as the user requested chain removal. */
tcf_chain_flush(chain, true);
/* In case the chain was successfully deleted, put a reference
@@ -2922,7 +2938,7 @@ replay:
break;
case RTM_GETCHAIN:
err = tc_chain_notify(chain, skb, n->nlmsg_seq,
- n->nlmsg_flags, n->nlmsg_type, true);
+ n->nlmsg_flags, n->nlmsg_type, true, extack);
if (err < 0)
NL_SET_ERR_MSG(extack, "Failed to send chain notify message");
break;
@@ -3022,7 +3038,7 @@ static int tc_dump_chain(struct sk_buff *skb, struct netlink_callback *cb)
chain->index, net, skb, block,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
- RTM_NEWCHAIN);
+ RTM_NEWCHAIN, NULL);
if (err <= 0)
break;
index++;
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-13 00:43:35 +0300