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cls_u32: propagate extack to delete callback

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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>
This commit is contained in:
Jakub Kicinski 2018-01-24 12:54:23 -08:00 committed by David S. Miller
parent f40fe58d13
commit 458e704d4d
1 changed files with 19 additions and 15 deletions
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34
net/sched/cls_u32.c
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@ -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;