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authorWANG Cong <xiyou.wangcong@gmail.com>2014-01-10 04:14:00 +0400
committerDavid S. Miller <davem@davemloft.net>2014-01-13 23:50:14 +0400
commita56e19538d02ade9ee6ae82da4a216d7a632e8d5 (patch)
tree8e32386ce0edace7b0544b0132b8c935fd260293 /net/sched/act_api.c
parentddafd34f419546f1eb7c343178685f059c3cf127 (diff)
downloadlinux-a56e19538d02ade9ee6ae82da4a216d7a632e8d5.tar.xz
net_sched: act: clean up notification functions
Refactor tcf_add_notify() and factor out tcf_del_notify(). Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_api.c')
-rw-r--r--net/sched/act_api.c95
1 files changed, 40 insertions, 55 deletions
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 74ae3ff05747..178bf2eab117 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -789,6 +789,33 @@ noflush_out:
}
static int
+tcf_del_notify(struct net *net, struct nlmsghdr *n, struct list_head *actions,
+ u32 portid)
+{
+ int ret;
+ struct sk_buff *skb;
+
+ skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOBUFS;
+
+ if (tca_get_fill(skb, actions, portid, n->nlmsg_seq, 0, RTM_DELACTION,
+ 0, 1) <= 0) {
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ /* now do the delete */
+ tcf_action_destroy(actions, 0);
+
+ ret = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
+ if (ret > 0)
+ return 0;
+ return ret;
+}
+
+static int
tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
u32 portid, int event)
{
@@ -821,27 +848,9 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
if (event == RTM_GETACTION)
ret = act_get_notify(net, portid, n, &actions, event);
else { /* delete */
- struct sk_buff *skb;
-
- skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
- if (!skb) {
- ret = -ENOBUFS;
- goto err;
- }
-
- if (tca_get_fill(skb, &actions, portid, n->nlmsg_seq, 0, event,
- 0, 1) <= 0) {
- kfree_skb(skb);
- ret = -EINVAL;
+ ret = tcf_del_notify(net, n, &actions, portid);
+ if (ret)
goto err;
- }
-
- /* now do the delete */
- tcf_action_destroy(&actions, 0);
- ret = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
- n->nlmsg_flags & NLM_F_ECHO);
- if (ret > 0)
- return 0;
return ret;
}
err:
@@ -849,60 +858,36 @@ err:
return ret;
}
-static int tcf_add_notify(struct net *net, struct list_head *actions,
- u32 portid, u32 seq, int event, u16 flags)
+static int
+tcf_add_notify(struct net *net, struct nlmsghdr *n, struct list_head *actions,
+ u32 portid)
{
- struct tcamsg *t;
- struct nlmsghdr *nlh;
struct sk_buff *skb;
- struct nlattr *nest;
- unsigned char *b;
int err = 0;
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb)
return -ENOBUFS;
- b = skb_tail_pointer(skb);
-
- nlh = nlmsg_put(skb, portid, seq, event, sizeof(*t), flags);
- if (!nlh)
- goto out_kfree_skb;
- t = nlmsg_data(nlh);
- t->tca_family = AF_UNSPEC;
- t->tca__pad1 = 0;
- t->tca__pad2 = 0;
-
- nest = nla_nest_start(skb, TCA_ACT_TAB);
- if (nest == NULL)
- goto out_kfree_skb;
-
- if (tcf_action_dump(skb, actions, 0, 0) < 0)
- goto out_kfree_skb;
-
- nla_nest_end(skb, nest);
-
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
- NETLINK_CB(skb).dst_group = RTNLGRP_TC;
+ if (tca_get_fill(skb, actions, portid, n->nlmsg_seq, n->nlmsg_flags,
+ RTM_NEWACTION, 0, 0) <= 0) {
+ kfree_skb(skb);
+ return -EINVAL;
+ }
- err = rtnetlink_send(skb, net, portid, RTNLGRP_TC, flags & NLM_F_ECHO);
+ err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
+ n->nlmsg_flags & NLM_F_ECHO);
if (err > 0)
err = 0;
return err;
-
-out_kfree_skb:
- kfree_skb(skb);
- return -1;
}
-
static int
tcf_action_add(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
u32 portid, int ovr)
{
int ret = 0;
LIST_HEAD(actions);
- u32 seq = n->nlmsg_seq;
ret = tcf_action_init(net, nla, NULL, NULL, ovr, 0, &actions);
if (ret)
@@ -911,7 +896,7 @@ tcf_action_add(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
/* dump then free all the actions after update; inserted policy
* stays intact
*/
- ret = tcf_add_notify(net, &actions, portid, seq, RTM_NEWACTION, n->nlmsg_flags);
+ ret = tcf_add_notify(net, n, &actions, portid);
cleanup_a(&actions);
done:
return ret;