This patch adds extack support for block callback to prepare per-qdisc
specific changes for extack.

Cc: David Ahern <dsah...@gmail.com>
Signed-off-by: Alexander Aring <ar...@mojatatu.com>
---
 include/net/sch_generic.h | 3 ++-
 net/sched/cls_api.c       | 4 ++--
 net/sched/sch_api.c       | 2 +-
 net/sched/sch_cbq.c       | 3 ++-
 net/sched/sch_drr.c       | 3 ++-
 net/sched/sch_dsmark.c    | 3 ++-
 net/sched/sch_fq_codel.c  | 3 ++-
 net/sched/sch_hfsc.c      | 3 ++-
 net/sched/sch_htb.c       | 3 ++-
 net/sched/sch_ingress.c   | 6 ++++--
 net/sched/sch_multiq.c    | 3 ++-
 net/sched/sch_prio.c      | 3 ++-
 net/sched/sch_qfq.c       | 3 ++-
 net/sched/sch_sfb.c       | 3 ++-
 net/sched/sch_sfq.c       | 3 ++-
 15 files changed, 31 insertions(+), 17 deletions(-)

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index d5a545a9d13e..b9940ea8b25e 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -163,7 +163,8 @@ struct Qdisc_class_ops {
 
        /* Filter manipulation */
        struct tcf_block *      (*tcf_block)(struct Qdisc *sch,
-                                            unsigned long arg);
+                                            unsigned long arg,
+                                            struct netlink_ext_ack *extack);
        unsigned long           (*bind_tcf)(struct Qdisc *, unsigned long,
                                        u32 classid);
        void                    (*unbind_tcf)(struct Qdisc *, unsigned long);
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index d51051dd8f7d..3f9e9e7cf3f9 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -793,7 +793,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct 
nlmsghdr *n,
        }
 
        /* And the last stroke */
-       block = cops->tcf_block(q, cl);
+       block = cops->tcf_block(q, cl, extack);
        if (!block) {
                err = -EINVAL;
                goto errout;
@@ -1040,7 +1040,7 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct 
netlink_callback *cb)
                if (cl == 0)
                        goto out;
        }
-       block = cops->tcf_block(q, cl);
+       block = cops->tcf_block(q, cl, NULL);
        if (!block)
                goto out;
 
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 87c974d2d576..d1ef0df4d628 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1775,7 +1775,7 @@ static void tc_bind_tclass(struct Qdisc *q, u32 portid, 
u32 clid,
        cl = cops->find(q, portid);
        if (!cl)
                return;
-       block = cops->tcf_block(q, cl);
+       block = cops->tcf_block(q, cl, NULL);
        if (!block)
                return;
        list_for_each_entry(chain, &block->chain_list, list) {
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 55cb7c035b19..aba17cc34050 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1679,7 +1679,8 @@ static int cbq_delete(struct Qdisc *sch, unsigned long 
arg)
        return 0;
 }
 
-static struct tcf_block *cbq_tcf_block(struct Qdisc *sch, unsigned long arg)
+static struct tcf_block *cbq_tcf_block(struct Qdisc *sch, unsigned long arg,
+                                      struct netlink_ext_ack *extack)
 {
        struct cbq_sched_data *q = qdisc_priv(sch);
        struct cbq_class *cl = (struct cbq_class *)arg;
diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c
index 73b914bc47a4..44a2870f6f10 100644
--- a/net/sched/sch_drr.c
+++ b/net/sched/sch_drr.c
@@ -173,7 +173,8 @@ static unsigned long drr_search_class(struct Qdisc *sch, 
u32 classid)
        return (unsigned long)drr_find_class(sch, classid);
 }
 
-static struct tcf_block *drr_tcf_block(struct Qdisc *sch, unsigned long cl)
+static struct tcf_block *drr_tcf_block(struct Qdisc *sch, unsigned long cl,
+                                      struct netlink_ext_ack *extack)
 {
        struct drr_sched *q = qdisc_priv(sch);
 
diff --git a/net/sched/sch_dsmark.c b/net/sched/sch_dsmark.c
index 89e433bbd590..5dc5d5216fbb 100644
--- a/net/sched/sch_dsmark.c
+++ b/net/sched/sch_dsmark.c
@@ -185,7 +185,8 @@ static void dsmark_walk(struct Qdisc *sch, struct 
qdisc_walker *walker)
        }
 }
 
-static struct tcf_block *dsmark_tcf_block(struct Qdisc *sch, unsigned long cl)
+static struct tcf_block *dsmark_tcf_block(struct Qdisc *sch, unsigned long cl,
+                                         struct netlink_ext_ack *extack)
 {
        struct dsmark_qdisc_data *p = qdisc_priv(sch);
 
diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index d798c93f7c96..8c5cea978d16 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -597,7 +597,8 @@ static void fq_codel_unbind(struct Qdisc *q, unsigned long 
cl)
 {
 }
 
-static struct tcf_block *fq_codel_tcf_block(struct Qdisc *sch, unsigned long 
cl)
+static struct tcf_block *fq_codel_tcf_block(struct Qdisc *sch, unsigned long 
cl,
+                                           struct netlink_ext_ack *extack)
 {
        struct fq_codel_sched_data *q = qdisc_priv(sch);
 
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 008524d6bb74..bf86a8aa67eb 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1247,7 +1247,8 @@ hfsc_unbind_tcf(struct Qdisc *sch, unsigned long arg)
        cl->filter_cnt--;
 }
 
-static struct tcf_block *hfsc_tcf_block(struct Qdisc *sch, unsigned long arg)
+static struct tcf_block *hfsc_tcf_block(struct Qdisc *sch, unsigned long arg,
+                                       struct netlink_ext_ack *extack)
 {
        struct hfsc_sched *q = qdisc_priv(sch);
        struct hfsc_class *cl = (struct hfsc_class *)arg;
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index eb535a23a69b..79cf24468a38 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1525,7 +1525,8 @@ static int htb_change_class(struct Qdisc *sch, u32 
classid,
        return err;
 }
 
-static struct tcf_block *htb_tcf_block(struct Qdisc *sch, unsigned long arg)
+static struct tcf_block *htb_tcf_block(struct Qdisc *sch, unsigned long arg,
+                                      struct netlink_ext_ack *extack)
 {
        struct htb_sched *q = qdisc_priv(sch);
        struct htb_class *cl = (struct htb_class *)arg;
diff --git a/net/sched/sch_ingress.c b/net/sched/sch_ingress.c
index c703cf3a0bed..17fa8969f7e7 100644
--- a/net/sched/sch_ingress.c
+++ b/net/sched/sch_ingress.c
@@ -48,7 +48,8 @@ static void ingress_walk(struct Qdisc *sch, struct 
qdisc_walker *walker)
 {
 }
 
-static struct tcf_block *ingress_tcf_block(struct Qdisc *sch, unsigned long cl)
+static struct tcf_block *ingress_tcf_block(struct Qdisc *sch, unsigned long cl,
+                                          struct netlink_ext_ack *extack)
 {
        struct ingress_sched_data *q = qdisc_priv(sch);
 
@@ -153,7 +154,8 @@ static unsigned long clsact_bind_filter(struct Qdisc *sch,
        return clsact_find(sch, classid);
 }
 
-static struct tcf_block *clsact_tcf_block(struct Qdisc *sch, unsigned long cl)
+static struct tcf_block *clsact_tcf_block(struct Qdisc *sch, unsigned long cl,
+                                         struct netlink_ext_ack *extack)
 {
        struct clsact_sched_data *q = qdisc_priv(sch);
 
diff --git a/net/sched/sch_multiq.c b/net/sched/sch_multiq.c
index fbd15b5524bb..a993ac4e1979 100644
--- a/net/sched/sch_multiq.c
+++ b/net/sched/sch_multiq.c
@@ -371,7 +371,8 @@ static void multiq_walk(struct Qdisc *sch, struct 
qdisc_walker *arg)
        }
 }
 
-static struct tcf_block *multiq_tcf_block(struct Qdisc *sch, unsigned long cl)
+static struct tcf_block *multiq_tcf_block(struct Qdisc *sch, unsigned long cl,
+                                         struct netlink_ext_ack *extack)
 {
        struct multiq_sched_data *q = qdisc_priv(sch);
 
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index 5f8ecbaa2610..077af4730749 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -329,7 +329,8 @@ static void prio_walk(struct Qdisc *sch, struct 
qdisc_walker *arg)
        }
 }
 
-static struct tcf_block *prio_tcf_block(struct Qdisc *sch, unsigned long cl)
+static struct tcf_block *prio_tcf_block(struct Qdisc *sch, unsigned long cl,
+                                       struct netlink_ext_ack *extack)
 {
        struct prio_sched_data *q = qdisc_priv(sch);
 
diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
index 1f4a84b687d2..e77e7131e620 100644
--- a/net/sched/sch_qfq.c
+++ b/net/sched/sch_qfq.c
@@ -565,7 +565,8 @@ static unsigned long qfq_search_class(struct Qdisc *sch, 
u32 classid)
        return (unsigned long)qfq_find_class(sch, classid);
 }
 
-static struct tcf_block *qfq_tcf_block(struct Qdisc *sch, unsigned long cl)
+static struct tcf_block *qfq_tcf_block(struct Qdisc *sch, unsigned long cl,
+                                      struct netlink_ext_ack *extack)
 {
        struct qfq_sched *q = qdisc_priv(sch);
 
diff --git a/net/sched/sch_sfb.c b/net/sched/sch_sfb.c
index d70d470361be..9e01b80edfe7 100644
--- a/net/sched/sch_sfb.c
+++ b/net/sched/sch_sfb.c
@@ -668,7 +668,8 @@ static void sfb_walk(struct Qdisc *sch, struct qdisc_walker 
*walker)
        }
 }
 
-static struct tcf_block *sfb_tcf_block(struct Qdisc *sch, unsigned long cl)
+static struct tcf_block *sfb_tcf_block(struct Qdisc *sch, unsigned long cl,
+                                      struct netlink_ext_ack *extack)
 {
        struct sfb_sched_data *q = qdisc_priv(sch);
 
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index 0af813ed67c2..0efd47098c5c 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -834,7 +834,8 @@ static void sfq_unbind(struct Qdisc *q, unsigned long cl)
 {
 }
 
-static struct tcf_block *sfq_tcf_block(struct Qdisc *sch, unsigned long cl)
+static struct tcf_block *sfq_tcf_block(struct Qdisc *sch, unsigned long cl,
+                                      struct netlink_ext_ack *extack)
 {
        struct sfq_sched_data *q = qdisc_priv(sch);
 
-- 
2.11.0

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