From: Jakub Kicinski <jakub.kicinski@netronome.com>
Date: Wed, 24 Jan 2018 12:54:23 -0800
Subject: cls_u32: propagate extack to delete callback
Patch-mainline: v4.16-rc1
Git-commit: 458e704d4d6e71ca28fb30eb7583dbb9169f9bc2
References: bsc#1109837
Propagate extack on removal of offloaded filter. Don't pass
extack from error paths.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
net/sched/cls_u32.c | 34 +++++++++++++++++++---------------
1 file changed, 19 insertions(+), 15 deletions(-)
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -488,12 +488,13 @@ static int u32_delete_key(struct tcf_pro
return 0;
}
-static void u32_clear_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h)
+static void u32_clear_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h,
+ struct netlink_ext_ack *extack)
{
struct tcf_block *block = tp->chain->block;
struct tc_cls_u32_offload cls_u32 = {};
- tc_cls_common_offload_init(&cls_u32.common, tp, h->flags, NULL);
+ tc_cls_common_offload_init(&cls_u32.common, tp, h->flags, extack);
cls_u32.command = TC_CLSU32_DELETE_HNODE;
cls_u32.hnode.divisor = h->divisor;
cls_u32.hnode.handle = h->handle;
@@ -519,7 +520,7 @@ static int u32_replace_hw_hnode(struct t
err = tc_setup_cb_call(block, NULL, TC_SETUP_CLSU32, &cls_u32, skip_sw);
if (err < 0) {
- u32_clear_hw_hnode(tp, h);
+ u32_clear_hw_hnode(tp, h, NULL);
return err;
} else if (err > 0) {
offloaded = true;
@@ -531,12 +532,13 @@ static int u32_replace_hw_hnode(struct t
return 0;
}
-static void u32_remove_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n)
+static void u32_remove_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n,
+ struct netlink_ext_ack *extack)
{
struct tcf_block *block = tp->chain->block;
struct tc_cls_u32_offload cls_u32 = {};
- tc_cls_common_offload_init(&cls_u32.common, tp, n->flags, NULL);
+ tc_cls_common_offload_init(&cls_u32.common, tp, n->flags, extack);
cls_u32.command = TC_CLSU32_DELETE_KNODE;
cls_u32.knode.handle = n->handle;
@@ -570,7 +572,7 @@ static int u32_replace_hw_knode(struct t
err = tc_setup_cb_call(block, NULL, TC_SETUP_CLSU32, &cls_u32, skip_sw);
if (err < 0) {
- u32_remove_hw_knode(tp, n);
+ u32_remove_hw_knode(tp, n, NULL);
return err;
} else if (err > 0) {
tcf_block_offload_inc(block, &n->flags);
@@ -582,7 +584,8 @@ static int u32_replace_hw_knode(struct t
return 0;
}
-static void u32_clear_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht)
+static void u32_clear_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht,
+ struct netlink_ext_ack *extack)
{
struct tc_u_knode *n;
unsigned int h;
@@ -592,7 +595,7 @@ static void u32_clear_hnode(struct tcf_p
RCU_INIT_POINTER(ht->ht[h],
rtnl_dereference(n->next));
tcf_unbind_filter(tp, &n->res);
- u32_remove_hw_knode(tp, n);
+ u32_remove_hw_knode(tp, n, extack);
idr_remove_ext(&ht->handle_idr, n->handle);
if (tcf_exts_get_net(&n->exts))
call_rcu(&n->rcu, u32_delete_key_freepf_rcu);
@@ -602,7 +605,8 @@ static void u32_clear_hnode(struct tcf_p
}
}
-static int u32_destroy_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht)
+static int u32_destroy_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht,
+ struct netlink_ext_ack *extack)
{
struct tc_u_common *tp_c = tp->data;
struct tc_u_hnode __rcu **hn;
@@ -610,14 +614,14 @@ static int u32_destroy_hnode(struct tcf_
WARN_ON(ht->refcnt);
- u32_clear_hnode(tp, ht);
+ u32_clear_hnode(tp, ht, extack);
hn = &tp_c->hlist;
for (phn = rtnl_dereference(*hn);
phn;
hn = &phn->next, phn = rtnl_dereference(*hn)) {
if (phn == ht) {
- u32_clear_hw_hnode(tp, ht);
+ u32_clear_hw_hnode(tp, ht, extack);
idr_destroy(&ht->handle_idr);
idr_remove_ext(&tp_c->handle_idr, ht->handle);
RCU_INIT_POINTER(*hn, ht->next);
@@ -648,7 +652,7 @@ static void u32_destroy(struct tcf_proto
WARN_ON(root_ht == NULL);
if (root_ht && --root_ht->refcnt == 0)
- u32_destroy_hnode(tp, root_ht);
+ u32_destroy_hnode(tp, root_ht, extack);
if (--tp_c->refcnt == 0) {
struct tc_u_hnode *ht;
@@ -659,7 +663,7 @@ static void u32_destroy(struct tcf_proto
ht;
ht = rtnl_dereference(ht->next)) {
ht->refcnt--;
- u32_clear_hnode(tp, ht);
+ u32_clear_hnode(tp, ht, extack);
}
while ((ht = rtnl_dereference(tp_c->hlist)) != NULL) {
@@ -686,7 +690,7 @@ static int u32_delete(struct tcf_proto *
goto out;
if (TC_U32_KEY(ht->handle)) {
- u32_remove_hw_knode(tp, (struct tc_u_knode *)ht);
+ u32_remove_hw_knode(tp, (struct tc_u_knode *)ht, extack);
ret = u32_delete_key(tp, (struct tc_u_knode *)ht);
goto out;
}
@@ -698,7 +702,7 @@ static int u32_delete(struct tcf_proto *
if (ht->refcnt == 1) {
ht->refcnt--;
- u32_destroy_hnode(tp, ht);
+ u32_destroy_hnode(tp, ht, extack);
} else {
NL_SET_ERR_MSG_MOD(extack, "Can not delete in-use filter");
return -EBUSY;