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Date: Tue, 23 Jan 2018 18:46:07 -0800
From: Jakub Kicinski <jakub.kicinski@...ronome.com>
To: davem@...emloft.net, dsahern@...il.com, daniel@...earbox.net,
john.fastabend@...il.com, jiri@...nulli.us
Cc: netdev@...r.kernel.org, oss-drivers@...ronome.com,
aring@...atatu.com, Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH net-next 11/12] cls_u32: propagate extack to delete callback
Propagate extack on removal of offloaded filter. Don't pass
extack from error paths.
Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
Reviewed-by: Simon Horman <simon.horman@...ronome.com>
---
net/sched/cls_u32.c | 34 +++++++++++++++++++---------------
1 file changed, 19 insertions(+), 15 deletions(-)
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index 21e84abe4226..60c892c36a60 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -487,12 +487,13 @@ static int u32_delete_key(struct tcf_proto *tp, struct tc_u_knode *key)
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;
@@ -518,7 +519,7 @@ static int u32_replace_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h,
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;
@@ -530,12 +531,13 @@ static int u32_replace_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h,
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;
@@ -569,7 +571,7 @@ static int u32_replace_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n,
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);
@@ -581,7 +583,8 @@ static int u32_replace_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n,
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;
@@ -591,7 +594,7 @@ static void u32_clear_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht)
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);
@@ -601,7 +604,8 @@ static void u32_clear_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht)
}
}
-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;
@@ -609,14 +613,14 @@ static int u32_destroy_hnode(struct tcf_proto *tp, struct tc_u_hnode *ht)
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);
@@ -647,7 +651,7 @@ static void u32_destroy(struct tcf_proto *tp, struct netlink_ext_ack *extack)
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;
@@ -658,7 +662,7 @@ static void u32_destroy(struct tcf_proto *tp, struct netlink_ext_ack *extack)
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) {
@@ -685,7 +689,7 @@ static int u32_delete(struct tcf_proto *tp, void *arg, bool *last,
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;
}
@@ -697,7 +701,7 @@ static int u32_delete(struct tcf_proto *tp, void *arg, bool *last,
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;
--
2.15.1
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