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Message-Id: <20170807222650.16561-1-xiyou.wangcong@gmail.com>
Date: Mon, 7 Aug 2017 15:26:50 -0700
From: Cong Wang <xiyou.wangcong@...il.com>
To: netdev@...r.kernel.org
Cc: Cong Wang <xiyou.wangcong@...il.com>,
Jamal Hadi Salim <jhs@...atatu.com>
Subject: [Patch net-next] net_sched: get rid of some forward declarations
If we move up tcf_fill_node() we can get rid of these
forward declarations.
Also, move down tfilter_notify_chain() to group them together.
Reported-by: Jamal Hadi Salim <jhs@...atatu.com>
Cc: Jamal Hadi Salim <jhs@...atatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>
---
net/sched/cls_api.c | 214 +++++++++++++++++++++++++---------------------------
1 file changed, 103 insertions(+), 111 deletions(-)
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 668afb6e9885..8d1157aebaf7 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -100,25 +100,6 @@ int unregister_tcf_proto_ops(struct tcf_proto_ops *ops)
}
EXPORT_SYMBOL(unregister_tcf_proto_ops);
-static int tfilter_notify(struct net *net, struct sk_buff *oskb,
- struct nlmsghdr *n, struct tcf_proto *tp,
- void *fh, int event, bool unicast);
-
-static int tfilter_del_notify(struct net *net, struct sk_buff *oskb,
- struct nlmsghdr *n, struct tcf_proto *tp,
- void *fh, bool unicast, bool *last);
-
-static void tfilter_notify_chain(struct net *net, struct sk_buff *oskb,
- struct nlmsghdr *n,
- struct tcf_chain *chain, int event)
-{
- struct tcf_proto *tp;
-
- for (tp = rtnl_dereference(chain->filter_chain);
- tp; tp = rtnl_dereference(tp->next))
- tfilter_notify(net, oskb, n, tp, 0, event, false);
-}
-
/* Select new prio value from the range, managed by kernel. */
static inline u32 tcf_auto_prio(struct tcf_proto *tp)
@@ -411,6 +392,109 @@ static struct tcf_proto *tcf_chain_tp_find(struct tcf_chain *chain,
return tp;
}
+static int tcf_fill_node(struct net *net, struct sk_buff *skb,
+ struct tcf_proto *tp, void *fh, u32 portid,
+ u32 seq, u16 flags, int event)
+{
+ struct tcmsg *tcm;
+ struct nlmsghdr *nlh;
+ unsigned char *b = skb_tail_pointer(skb);
+
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags);
+ if (!nlh)
+ goto out_nlmsg_trim;
+ tcm = nlmsg_data(nlh);
+ tcm->tcm_family = AF_UNSPEC;
+ tcm->tcm__pad1 = 0;
+ tcm->tcm__pad2 = 0;
+ tcm->tcm_ifindex = qdisc_dev(tp->q)->ifindex;
+ tcm->tcm_parent = tp->classid;
+ tcm->tcm_info = TC_H_MAKE(tp->prio, tp->protocol);
+ if (nla_put_string(skb, TCA_KIND, tp->ops->kind))
+ goto nla_put_failure;
+ if (nla_put_u32(skb, TCA_CHAIN, tp->chain->index))
+ goto nla_put_failure;
+ if (!fh) {
+ tcm->tcm_handle = 0;
+ } else {
+ if (tp->ops->dump && tp->ops->dump(net, tp, fh, skb, tcm) < 0)
+ goto nla_put_failure;
+ }
+ nlh->nlmsg_len = skb_tail_pointer(skb) - b;
+ return skb->len;
+
+out_nlmsg_trim:
+nla_put_failure:
+ nlmsg_trim(skb, b);
+ return -1;
+}
+
+static int tfilter_notify(struct net *net, struct sk_buff *oskb,
+ struct nlmsghdr *n, struct tcf_proto *tp,
+ void *fh, int event, bool unicast)
+{
+ struct sk_buff *skb;
+ u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
+
+ skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOBUFS;
+
+ if (tcf_fill_node(net, skb, tp, fh, portid, n->nlmsg_seq,
+ n->nlmsg_flags, event) <= 0) {
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ if (unicast)
+ return netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT);
+
+ return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
+}
+
+static int tfilter_del_notify(struct net *net, struct sk_buff *oskb,
+ struct nlmsghdr *n, struct tcf_proto *tp,
+ void *fh, bool unicast, bool *last)
+{
+ struct sk_buff *skb;
+ u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
+ int err;
+
+ skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOBUFS;
+
+ if (tcf_fill_node(net, skb, tp, fh, portid, n->nlmsg_seq,
+ n->nlmsg_flags, RTM_DELTFILTER) <= 0) {
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ err = tp->ops->delete(tp, fh, last);
+ if (err) {
+ kfree_skb(skb);
+ return err;
+ }
+
+ if (unicast)
+ return netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT);
+
+ return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
+}
+
+static void tfilter_notify_chain(struct net *net, struct sk_buff *oskb,
+ struct nlmsghdr *n,
+ struct tcf_chain *chain, int event)
+{
+ struct tcf_proto *tp;
+
+ for (tp = rtnl_dereference(chain->filter_chain);
+ tp; tp = rtnl_dereference(tp->next))
+ tfilter_notify(net, oskb, n, tp, 0, event, false);
+}
+
/* Add/change/delete/get a filter node */
static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
@@ -640,98 +724,6 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n,
return err;
}
-static int tcf_fill_node(struct net *net, struct sk_buff *skb,
- struct tcf_proto *tp, void *fh, u32 portid,
- u32 seq, u16 flags, int event)
-{
- struct tcmsg *tcm;
- struct nlmsghdr *nlh;
- unsigned char *b = skb_tail_pointer(skb);
-
- nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags);
- if (!nlh)
- goto out_nlmsg_trim;
- tcm = nlmsg_data(nlh);
- tcm->tcm_family = AF_UNSPEC;
- tcm->tcm__pad1 = 0;
- tcm->tcm__pad2 = 0;
- tcm->tcm_ifindex = qdisc_dev(tp->q)->ifindex;
- tcm->tcm_parent = tp->classid;
- tcm->tcm_info = TC_H_MAKE(tp->prio, tp->protocol);
- if (nla_put_string(skb, TCA_KIND, tp->ops->kind))
- goto nla_put_failure;
- if (nla_put_u32(skb, TCA_CHAIN, tp->chain->index))
- goto nla_put_failure;
- if (!fh) {
- tcm->tcm_handle = 0;
- } else {
- if (tp->ops->dump && tp->ops->dump(net, tp, fh, skb, tcm) < 0)
- goto nla_put_failure;
- }
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
- return skb->len;
-
-out_nlmsg_trim:
-nla_put_failure:
- nlmsg_trim(skb, b);
- return -1;
-}
-
-static int tfilter_notify(struct net *net, struct sk_buff *oskb,
- struct nlmsghdr *n, struct tcf_proto *tp,
- void *fh, int event, bool unicast)
-{
- struct sk_buff *skb;
- u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
-
- skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
- if (!skb)
- return -ENOBUFS;
-
- if (tcf_fill_node(net, skb, tp, fh, portid, n->nlmsg_seq,
- n->nlmsg_flags, event) <= 0) {
- kfree_skb(skb);
- return -EINVAL;
- }
-
- if (unicast)
- return netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT);
-
- return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
- n->nlmsg_flags & NLM_F_ECHO);
-}
-
-static int tfilter_del_notify(struct net *net, struct sk_buff *oskb,
- struct nlmsghdr *n, struct tcf_proto *tp,
- void *fh, bool unicast, bool *last)
-{
- struct sk_buff *skb;
- u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
- int err;
-
- skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
- if (!skb)
- return -ENOBUFS;
-
- if (tcf_fill_node(net, skb, tp, fh, portid, n->nlmsg_seq,
- n->nlmsg_flags, RTM_DELTFILTER) <= 0) {
- kfree_skb(skb);
- return -EINVAL;
- }
-
- err = tp->ops->delete(tp, fh, last);
- if (err) {
- kfree_skb(skb);
- return err;
- }
-
- if (unicast)
- return netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT);
-
- return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
- n->nlmsg_flags & NLM_F_ECHO);
-}
-
struct tcf_dump_args {
struct tcf_walker w;
struct sk_buff *skb;
--
2.13.0
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