diff mbox series

[net-next,v2,02/22] net: sched: act_api: implement generic walker and search for tc action

Message ID 20220906121346.71578-3-shaozhengchao@huawei.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series refactor the walk and lookup hook functions in tc_action_ops | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count fail Series longer than 15 patches (and no cover letter)
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 2 this patch: 2
netdev/cc_maintainers success CCed 9 of 9 maintainers
netdev/build_clang success Errors and warnings before: 5 this patch: 5
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 2 this patch: 2
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 63 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

shaozhengchao Sept. 6, 2022, 12:13 p.m. UTC 
Being able to get tc_action_net by using net_id stored in tc_action_ops
and execute the generic walk/search function, add __tcf_generic_walker()
and __tcf_idr_search() helpers.

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
---
 net/sched/act_api.c | 33 +++++++++++++++++++++++++++++----
 1 file changed, 29 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 817065aa2833..9b31a10cc639 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -676,6 +676,31 @@  int tcf_idr_search(struct tc_action_net *tn, struct tc_action **a, u32 index)
 }
 EXPORT_SYMBOL(tcf_idr_search);
 
+static int __tcf_generic_walker(struct net *net, struct sk_buff *skb,
+				struct netlink_callback *cb, int type,
+				const struct tc_action_ops *ops,
+				struct netlink_ext_ack *extack)
+{
+	struct tc_action_net *tn = net_generic(net, ops->net_id);
+
+	if (unlikely(ops->walk))
+		return ops->walk(net, skb, cb, type, ops, extack);
+
+	return tcf_generic_walker(tn, skb, cb, type, ops, extack);
+}
+
+static int __tcf_idr_search(struct net *net,
+			    const struct tc_action_ops *ops,
+			    struct tc_action **a, u32 index)
+{
+	struct tc_action_net *tn = net_generic(net, ops->net_id);
+
+	if (unlikely(ops->lookup))
+		return ops->lookup(net, a, index);
+
+	return tcf_idr_search(tn, a, index);
+}
+
 static int tcf_idr_delete_index(struct tcf_idrinfo *idrinfo, u32 index)
 {
 	struct tc_action *p;
@@ -926,7 +951,7 @@  int tcf_register_action(struct tc_action_ops *act,
 	struct tc_action_ops *a;
 	int ret;
 
-	if (!act->act || !act->dump || !act->init || !act->walk || !act->lookup)
+	if (!act->act || !act->dump || !act->init)
 		return -EINVAL;
 
 	/* We have to register pernet ops before making the action ops visible,
@@ -1638,7 +1663,7 @@  static struct tc_action *tcf_action_get_1(struct net *net, struct nlattr *nla,
 		goto err_out;
 	}
 	err = -ENOENT;
-	if (ops->lookup(net, &a, index) == 0) {
+	if (__tcf_idr_search(net, ops, &a, index) == 0) {
 		NL_SET_ERR_MSG(extack, "TC action with specified index not found");
 		goto err_mod;
 	}
@@ -1703,7 +1728,7 @@  static int tca_action_flush(struct net *net, struct nlattr *nla,
 		goto out_module_put;
 	}
 
-	err = ops->walk(net, skb, &dcb, RTM_DELACTION, ops, extack);
+	err = __tcf_generic_walker(net, skb, &dcb, RTM_DELACTION, ops, extack);
 	if (err <= 0) {
 		nla_nest_cancel(skb, nest);
 		goto out_module_put;
@@ -2121,7 +2146,7 @@  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, NULL);
+	ret = __tcf_generic_walker(net, skb, cb, RTM_GETACTION, a_o, NULL);
 	if (ret < 0)
 		goto out_module_put;