This patch adds extack support for act walker callback api. This
prepares to handle extack support inside each specific act
implementation.

Cc: David Ahern <dsah...@gmail.com>
Signed-off-by: Alexander Aring <ar...@mojatatu.com>
---
 include/net/act_api.h      | 3 ++-
 net/sched/act_api.c        | 4 ++--
 net/sched/act_bpf.c        | 3 ++-
 net/sched/act_connmark.c   | 3 ++-
 net/sched/act_csum.c       | 3 ++-
 net/sched/act_gact.c       | 3 ++-
 net/sched/act_ife.c        | 3 ++-
 net/sched/act_ipt.c        | 6 ++++--
 net/sched/act_mirred.c     | 3 ++-
 net/sched/act_nat.c        | 3 ++-
 net/sched/act_pedit.c      | 3 ++-
 net/sched/act_police.c     | 3 ++-
 net/sched/act_sample.c     | 3 ++-
 net/sched/act_simple.c     | 3 ++-
 net/sched/act_skbedit.c    | 3 ++-
 net/sched/act_skbmod.c     | 3 ++-
 net/sched/act_tunnel_key.c | 3 ++-
 net/sched/act_vlan.c       | 3 ++-
 18 files changed, 38 insertions(+), 20 deletions(-)

diff --git a/include/net/act_api.h b/include/net/act_api.h
index 0bd65db506ba..ab3529255377 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -94,7 +94,8 @@ struct tc_action_ops {
                        int bind, struct netlink_ext_ack *extack);
        int     (*walk)(struct net *, struct sk_buff *,
                        struct netlink_callback *, int,
-                       const struct tc_action_ops *);
+                       const struct tc_action_ops *,
+                       struct netlink_ext_ack *);
        void    (*stats_update)(struct tc_action *, u64, u32, u64);
        struct net_device *(*get_dev)(const struct tc_action *a);
 };
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 02b3c99da786..18df1e956e6a 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -963,7 +963,7 @@ static int tca_action_flush(struct net *net, struct nlattr 
*nla,
                goto out_module_put;
        }
 
-       err = ops->walk(net, skb, &dcb, RTM_DELACTION, ops);
+       err = ops->walk(net, skb, &dcb, RTM_DELACTION, ops, extack);
        if (err <= 0)
                goto out_module_put;
 
@@ -1253,7 +1253,7 @@ static int tc_dump_action(struct sk_buff *skb, struct 
netlink_callback *cb)
        if (nest == NULL)
                goto out_module_put;
 
-       ret = a_o->walk(net, skb, cb, RTM_GETACTION, a_o);
+       ret = a_o->walk(net, skb, cb, RTM_GETACTION, a_o, NULL);
        if (ret < 0)
                goto out_module_put;
 
diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c
index d9654b863347..7e01e2c710c4 100644
--- a/net/sched/act_bpf.c
+++ b/net/sched/act_bpf.c
@@ -367,7 +367,8 @@ static void tcf_bpf_cleanup(struct tc_action *act)
 
 static int tcf_bpf_walker(struct net *net, struct sk_buff *skb,
                          struct netlink_callback *cb, int type,
-                         const struct tc_action_ops *ops)
+                         const struct tc_action_ops *ops,
+                         struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, bpf_net_id);
 
diff --git a/net/sched/act_connmark.c b/net/sched/act_connmark.c
index 0504b7600fb6..cb722da0bb15 100644
--- a/net/sched/act_connmark.c
+++ b/net/sched/act_connmark.c
@@ -177,7 +177,8 @@ static inline int tcf_connmark_dump(struct sk_buff *skb, 
struct tc_action *a,
 
 static int tcf_connmark_walker(struct net *net, struct sk_buff *skb,
                               struct netlink_callback *cb, int type,
-                              const struct tc_action_ops *ops)
+                              const struct tc_action_ops *ops,
+                              struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, connmark_net_id);
 
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index bdd17b9ef034..3e8efadb750f 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -631,7 +631,8 @@ static void tcf_csum_cleanup(struct tc_action *a)
 
 static int tcf_csum_walker(struct net *net, struct sk_buff *skb,
                           struct netlink_callback *cb, int type,
-                          const struct tc_action_ops *ops)
+                          const struct tc_action_ops *ops,
+                          struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, csum_net_id);
 
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index e1e69e38f4b0..d96ebe4bb65a 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -201,7 +201,8 @@ static int tcf_gact_dump(struct sk_buff *skb, struct 
tc_action *a,
 
 static int tcf_gact_walker(struct net *net, struct sk_buff *skb,
                           struct netlink_callback *cb, int type,
-                          const struct tc_action_ops *ops)
+                          const struct tc_action_ops *ops,
+                          struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, gact_net_id);
 
diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c
index 0b70fb0cc609..b777e381e0dd 100644
--- a/net/sched/act_ife.c
+++ b/net/sched/act_ife.c
@@ -824,7 +824,8 @@ static int tcf_ife_act(struct sk_buff *skb, const struct 
tc_action *a,
 
 static int tcf_ife_walker(struct net *net, struct sk_buff *skb,
                          struct netlink_callback *cb, int type,
-                         const struct tc_action_ops *ops)
+                         const struct tc_action_ops *ops,
+                         struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, ife_net_id);
 
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index f29af79a2d1f..f33a8cc5dee6 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -303,7 +303,8 @@ static int tcf_ipt_dump(struct sk_buff *skb, struct 
tc_action *a, int bind,
 
 static int tcf_ipt_walker(struct net *net, struct sk_buff *skb,
                          struct netlink_callback *cb, int type,
-                         const struct tc_action_ops *ops)
+                         const struct tc_action_ops *ops,
+                         struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, ipt_net_id);
 
@@ -352,7 +353,8 @@ static struct pernet_operations ipt_net_ops = {
 
 static int tcf_xt_walker(struct net *net, struct sk_buff *skb,
                         struct netlink_callback *cb, int type,
-                        const struct tc_action_ops *ops)
+                        const struct tc_action_ops *ops,
+                        struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, xt_net_id);
 
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 9980c6affb5e..3dcd295ea6a7 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -265,7 +265,8 @@ static int tcf_mirred_dump(struct sk_buff *skb, struct 
tc_action *a, int bind,
 
 static int tcf_mirred_walker(struct net *net, struct sk_buff *skb,
                             struct netlink_callback *cb, int type,
-                            const struct tc_action_ops *ops)
+                            const struct tc_action_ops *ops,
+                            struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, mirred_net_id);
 
diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index 6f6d7667ef9a..67243cdc0588 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -278,7 +278,8 @@ static int tcf_nat_dump(struct sk_buff *skb, struct 
tc_action *a,
 
 static int tcf_nat_walker(struct net *net, struct sk_buff *skb,
                          struct netlink_callback *cb, int type,
-                         const struct tc_action_ops *ops)
+                         const struct tc_action_ops *ops,
+                         struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, nat_net_id);
 
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index 308b2680a6d9..6d6481f6bffa 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -419,7 +419,8 @@ static int tcf_pedit_dump(struct sk_buff *skb, struct 
tc_action *a,
 
 static int tcf_pedit_walker(struct net *net, struct sk_buff *skb,
                            struct netlink_callback *cb, int type,
-                           const struct tc_action_ops *ops)
+                           const struct tc_action_ops *ops,
+                           struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, pedit_net_id);
 
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index 1292f880eab0..ff803414a736 100644
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -58,7 +58,8 @@ static struct tc_action_ops act_police_ops;
 
 static int tcf_act_police_walker(struct net *net, struct sk_buff *skb,
                                 struct netlink_callback *cb, int type,
-                                const struct tc_action_ops *ops)
+                                const struct tc_action_ops *ops,
+                                struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, police_net_id);
 
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index 22379b2cfd1a..7a2b6a33f239 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -202,7 +202,8 @@ static int tcf_sample_dump(struct sk_buff *skb, struct 
tc_action *a,
 
 static int tcf_sample_walker(struct net *net, struct sk_buff *skb,
                             struct netlink_callback *cb, int type,
-                            const struct tc_action_ops *ops)
+                            const struct tc_action_ops *ops,
+                            struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, sample_net_id);
 
diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
index 3ebf71470977..3f5474d20702 100644
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -170,7 +170,8 @@ static int tcf_simp_dump(struct sk_buff *skb, struct 
tc_action *a,
 
 static int tcf_simp_walker(struct net *net, struct sk_buff *skb,
                           struct netlink_callback *cb, int type,
-                          const struct tc_action_ops *ops)
+                          const struct tc_action_ops *ops,
+                          struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, simp_net_id);
 
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
index ff1970e14016..d99b6f1f5181 100644
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c
@@ -208,7 +208,8 @@ static int tcf_skbedit_dump(struct sk_buff *skb, struct 
tc_action *a,
 
 static int tcf_skbedit_walker(struct net *net, struct sk_buff *skb,
                              struct netlink_callback *cb, int type,
-                             const struct tc_action_ops *ops)
+                             const struct tc_action_ops *ops,
+                             struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, skbedit_net_id);
 
diff --git a/net/sched/act_skbmod.c b/net/sched/act_skbmod.c
index 110d7c1f823d..369ea85d0f02 100644
--- a/net/sched/act_skbmod.c
+++ b/net/sched/act_skbmod.c
@@ -232,7 +232,8 @@ static int tcf_skbmod_dump(struct sk_buff *skb, struct 
tc_action *a,
 
 static int tcf_skbmod_walker(struct net *net, struct sk_buff *skb,
                             struct netlink_callback *cb, int type,
-                            const struct tc_action_ops *ops)
+                            const struct tc_action_ops *ops,
+                            struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, skbmod_net_id);
 
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
index 65a19928f1a9..bced6fd00d43 100644
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -291,7 +291,8 @@ static int tunnel_key_dump(struct sk_buff *skb, struct 
tc_action *a,
 
 static int tunnel_key_walker(struct net *net, struct sk_buff *skb,
                             struct netlink_callback *cb, int type,
-                            const struct tc_action_ops *ops)
+                            const struct tc_action_ops *ops,
+                            struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
 
diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c
index 03dcbbc5ffd2..7cf409443d02 100644
--- a/net/sched/act_vlan.c
+++ b/net/sched/act_vlan.c
@@ -267,7 +267,8 @@ static int tcf_vlan_dump(struct sk_buff *skb, struct 
tc_action *a,
 
 static int tcf_vlan_walker(struct net *net, struct sk_buff *skb,
                           struct netlink_callback *cb, int type,
-                          const struct tc_action_ops *ops)
+                          const struct tc_action_ops *ops,
+                          struct netlink_ext_ack *extack)
 {
        struct tc_action_net *tn = net_generic(net, vlan_net_id);
 
-- 
2.11.0

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