[PATCH net-next 0/2] net: sched: sch_api: fix coding style issues for extack

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6 messages, 3 authors, 2017-12-05 · open the first message on its own page

[PATCH net-next 0/2] net: sched: sch_api: fix coding style issues for extack

From: Alexander Aring <hidden>
Date: 2017-12-04 23:40:46

Hi,

this patch prepares to handle extack for qdiscs and fixes checkpatch
issues.

There are a bunch of warnings issued by checkpatch which bothered me.
This first patchset is to get rid of those warnings to make way for
the next patchsets.

I plan to followup with qdiscs, classifiers and actions after this.

- Alex

Cc: David Ahern <redacted>

Alexander Aring (2):
  net: sched: sch_api: fix code style issues
  net: sched: sch_api: rearrange init handling

 include/net/sch_generic.h | 10 +++--
 net/sched/sch_api.c       | 97 +++++++++++++++++++++++++----------------------
 2 files changed, 58 insertions(+), 49 deletions(-)

-- 
2.11.0

[PATCH net-next 1/2] net: sched: sch_api: fix code style issues

From: Alexander Aring <hidden>
Date: 2017-12-04 23:40:47

This patch fix checkpatch issues for upcomming patches according to the
sched api file. It changes checking on null pointer, remove unnecessary
brackets, add variable names for parameters and adjust 80 char width.

Cc: David Ahern <redacted>
Signed-off-by: Alexander Aring <redacted>
---
 include/net/sch_generic.h | 10 ++++++----
 net/sched/sch_api.c       | 11 ++++++-----
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 65d0d25f2648..d842bebef771 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h

@@ -161,7 +161,8 @@ struct Qdisc_class_ops {
 	void			(*walk)(struct Qdisc *, struct qdisc_walker * arg);
 
 	/* Filter manipulation */
-	struct tcf_block *	(*tcf_block)(struct Qdisc *, unsigned long);
+	struct tcf_block *	(*tcf_block)(struct Qdisc *sch,
+					     unsigned long arg);
 	unsigned long		(*bind_tcf)(struct Qdisc *, unsigned long,
 					u32 classid);
 	void			(*unbind_tcf)(struct Qdisc *, unsigned long);

@@ -185,11 +186,12 @@ struct Qdisc_ops {
 	struct sk_buff *	(*dequeue)(struct Qdisc *);
 	struct sk_buff *	(*peek)(struct Qdisc *);
 
-	int			(*init)(struct Qdisc *, struct nlattr *arg);
+	int			(*init)(struct Qdisc *sch, struct nlattr *arg);
 	void			(*reset)(struct Qdisc *);
 	void			(*destroy)(struct Qdisc *);
-	int			(*change)(struct Qdisc *, struct nlattr *arg);
-	void			(*attach)(struct Qdisc *);
+	int			(*change)(struct Qdisc *sch,
+					  struct nlattr *arg);
+	void			(*attach)(struct Qdisc *sch);
 
 	int			(*dump)(struct Qdisc *, struct sk_buff *);
 	int			(*dump_stats)(struct Qdisc *, struct gnet_dump *);

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index b6c4f536876b..8f7f5378cc33 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c

@@ -1020,7 +1020,7 @@ static struct Qdisc *qdisc_create(struct net_device *dev,
 #endif
 
 	err = -ENOENT;
-	if (ops == NULL)
+	if (!ops)
 		goto err_out;
 
 	sch = qdisc_alloc(dev_queue, ops);

@@ -1087,7 +1087,7 @@ static struct Qdisc *qdisc_create(struct net_device *dev,
 			if (sch->flags & TCQ_F_MQROOT)
 				goto err_out4;
 
-			if ((sch->parent != TC_H_ROOT) &&
+			if (sch->parent != TC_H_ROOT &&
 			    !(sch->flags & TCQ_F_INGRESS) &&
 			    (!p || !(p->flags & TCQ_F_MQROOT)))
 				running = qdisc_root_sleeping_running(sch);

@@ -1139,7 +1139,7 @@ static int qdisc_change(struct Qdisc *sch, struct nlattr **tca)
 	int err = 0;
 
 	if (tca[TCA_OPTIONS]) {
-		if (sch->ops->change == NULL)
+		if (!sch->ops->change)
 			return -EINVAL;
 		err = sch->ops->change(sch, tca[TCA_OPTIONS]);
 		if (err)

@@ -1344,7 +1344,8 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n,
 					goto create_n_graft;
 				if (n->nlmsg_flags & NLM_F_EXCL)
 					return -EEXIST;
-				if (tca[TCA_KIND] && nla_strcmp(tca[TCA_KIND], q->ops->id))
+				if (tca[TCA_KIND] &&
+				    nla_strcmp(tca[TCA_KIND], q->ops->id))
 					return -EINVAL;
 				if (q == p ||
 				    (p && check_loop(q, p, 0)))

@@ -1389,7 +1390,7 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n,
 	}
 
 	/* Change qdisc parameters */
-	if (q == NULL)
+	if (!q)
 		return -ENOENT;
 	if (n->nlmsg_flags & NLM_F_EXCL)
 		return -EEXIST;

-- 
2.11.0

[PATCH net-next 2/2] net: sched: sch_api: rearrange init handling

From: Alexander Aring <hidden>
Date: 2017-12-04 23:40:48

This patch fixes the following checkpatch error:

ERROR: do not use assignment in if condition

by rearranging the if condition to execute init callback only if init
callback exists. The whole setup afterwards is called in any case,
doesn't matter if init callback is set or not. This patch has the same
behaviour as before, just without assign err variable in if condition.
It also makes the code easier to read.

Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David Ahern <redacted>
Signed-off-by: Alexander Aring <redacted>
---
 net/sched/sch_api.c | 88 ++++++++++++++++++++++++++++-------------------------
 1 file changed, 47 insertions(+), 41 deletions(-)

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 8f7f5378cc33..a48ca41b7ecf 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c

@@ -1060,54 +1060,60 @@ static struct Qdisc *qdisc_create(struct net_device *dev,
 		netdev_info(dev, "Caught tx_queue_len zero misconfig\n");
 	}
 
-	if (!ops->init || (err = ops->init(sch, tca[TCA_OPTIONS])) == 0) {
-		if (qdisc_is_percpu_stats(sch)) {
-			sch->cpu_bstats =
-				netdev_alloc_pcpu_stats(struct gnet_stats_basic_cpu);
-			if (!sch->cpu_bstats)
-				goto err_out4;
-
-			sch->cpu_qstats = alloc_percpu(struct gnet_stats_queue);
-			if (!sch->cpu_qstats)
-				goto err_out4;
-		}
+	if (ops->init) {
+		err = ops->init(sch, tca[TCA_OPTIONS]);
+		if (err != 0)
+			goto err_out5;
+	}
 
-		if (tca[TCA_STAB]) {
-			stab = qdisc_get_stab(tca[TCA_STAB]);
-			if (IS_ERR(stab)) {
-				err = PTR_ERR(stab);
-				goto err_out4;
-			}
-			rcu_assign_pointer(sch->stab, stab);
-		}
-		if (tca[TCA_RATE]) {
-			seqcount_t *running;
+	if (qdisc_is_percpu_stats(sch)) {
+		sch->cpu_bstats =
+			netdev_alloc_pcpu_stats(struct gnet_stats_basic_cpu);
+		if (!sch->cpu_bstats)
+			goto err_out4;
 
-			err = -EOPNOTSUPP;
-			if (sch->flags & TCQ_F_MQROOT)
-				goto err_out4;
+		sch->cpu_qstats = alloc_percpu(struct gnet_stats_queue);
+		if (!sch->cpu_qstats)
+			goto err_out4;
+	}
 
-			if (sch->parent != TC_H_ROOT &&
-			    !(sch->flags & TCQ_F_INGRESS) &&
-			    (!p || !(p->flags & TCQ_F_MQROOT)))
-				running = qdisc_root_sleeping_running(sch);
-			else
-				running = &sch->running;
-
-			err = gen_new_estimator(&sch->bstats,
-						sch->cpu_bstats,
-						&sch->rate_est,
-						NULL,
-						running,
-						tca[TCA_RATE]);
-			if (err)
-				goto err_out4;
+	if (tca[TCA_STAB]) {
+		stab = qdisc_get_stab(tca[TCA_STAB]);
+		if (IS_ERR(stab)) {
+			err = PTR_ERR(stab);
+			goto err_out4;
 		}
+		rcu_assign_pointer(sch->stab, stab);
+	}
+	if (tca[TCA_RATE]) {
+		seqcount_t *running;
 
-		qdisc_hash_add(sch, false);
+		err = -EOPNOTSUPP;
+		if (sch->flags & TCQ_F_MQROOT)
+			goto err_out4;
 
-		return sch;
+		if (sch->parent != TC_H_ROOT &&
+		    !(sch->flags & TCQ_F_INGRESS) &&
+		    (!p || !(p->flags & TCQ_F_MQROOT)))
+			running = qdisc_root_sleeping_running(sch);
+		else
+			running = &sch->running;
+
+		err = gen_new_estimator(&sch->bstats,
+					sch->cpu_bstats,
+					&sch->rate_est,
+					NULL,
+					running,
+					tca[TCA_RATE]);
+		if (err)
+			goto err_out4;
 	}
+
+	qdisc_hash_add(sch, false);
+
+	return sch;
+
+err_out5:
 	/* ops->init() failed, we call ->destroy() like qdisc_create_dflt() */
 	if (ops->destroy)
 		ops->destroy(sch);

-- 
2.11.0

Re: [PATCH net-next 1/2] net: sched: sch_api: fix code style issues

From: Jamal Hadi Salim <jhs@mojatatu.com>
Date: 2017-12-05 12:29:47

On 17-12-04 06:39 PM, Alexander Aring wrote:

This patch fix checkpatch issues for upcomming patches according to the
sched api file. It changes checking on null pointer, remove unnecessary
brackets, add variable names for parameters and adjust 80 char width.

Cc: David Ahern <redacted>
Signed-off-by: Alexander Aring <redacted>

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>

cheers,
jamal

Re: [PATCH net-next 2/2] net: sched: sch_api: rearrange init handling

From: Jamal Hadi Salim <jhs@mojatatu.com>
Date: 2017-12-05 12:30:33

On 17-12-04 06:40 PM, Alexander Aring wrote:

This patch fixes the following checkpatch error:

ERROR: do not use assignment in if condition

by rearranging the if condition to execute init callback only if init
callback exists. The whole setup afterwards is called in any case,
doesn't matter if init callback is set or not. This patch has the same
behaviour as before, just without assign err variable in if condition.
It also makes the code easier to read.

Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David Ahern <redacted>
Signed-off-by: Alexander Aring <redacted>

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>

cheers,
jamal

Re: [PATCH net-next 0/2] net: sched: sch_api: fix coding style issues for extack

From: David Miller <davem@davemloft.net>
Date: 2017-12-05 20:04:46

From: Alexander Aring <redacted>
Date: Mon,  4 Dec 2017 18:39:58 -0500

this patch prepares to handle extack for qdiscs and fixes checkpatch
issues.

There are a bunch of warnings issued by checkpatch which bothered me.
This first patchset is to get rid of those warnings to make way for
the next patchsets.

I plan to followup with qdiscs, classifiers and actions after this.

Series applied.

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