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authorJohn Hurley <john.hurley@netronome.com>2018-06-26 00:30:07 +0300
committerDavid S. Miller <davem@davemloft.net>2018-06-26 17:21:33 +0300
commit0efd1b3a13bfabc8b70e79bd22aa413d6d2ad7a5 (patch)
tree53702bd0fddc409850b1ca822b9c6536882d3ff5 /net/sched/cls_matchall.c
parent31533cba4327aefeafe8a7d57de0c737a3b2faa6 (diff)
downloadlinux-0efd1b3a13bfabc8b70e79bd22aa413d6d2ad7a5.tar.xz
net: sched: cls_matchall: implement offload tcf_proto_op
Add the reoffload tcf_proto_op in matchall to generate an offload message for each filter in the given tcf_proto. Call the specified callback with this new offload message. The function only returns an error if the callback rejects adding a 'hardware only' rule. Ensure matchall flags correctly report if the rule is in hw by keeping a reference counter for the number of instances of the rule offloaded. Only update the flag when this counter changes from or to 0. Signed-off-by: John Hurley <john.hurley@netronome.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/cls_matchall.c')
-rw-r--r--net/sched/cls_matchall.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c
index 47b207ef7762..af16f36ed578 100644
--- a/net/sched/cls_matchall.c
+++ b/net/sched/cls_matchall.c
@@ -21,6 +21,7 @@ struct cls_mall_head {
struct tcf_result res;
u32 handle;
u32 flags;
+ unsigned int in_hw_count;
struct rcu_work rwork;
};
@@ -95,6 +96,7 @@ static int mall_replace_hw_filter(struct tcf_proto *tp,
mall_destroy_hw_filter(tp, head, cookie, NULL);
return err;
} else if (err > 0) {
+ head->in_hw_count = err;
tcf_block_offload_inc(block, &head->flags);
}
@@ -235,6 +237,35 @@ skip:
arg->count++;
}
+static int mall_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
+ void *cb_priv, struct netlink_ext_ack *extack)
+{
+ struct cls_mall_head *head = rtnl_dereference(tp->root);
+ struct tc_cls_matchall_offload cls_mall = {};
+ struct tcf_block *block = tp->chain->block;
+ int err;
+
+ if (tc_skip_hw(head->flags))
+ return 0;
+
+ tc_cls_common_offload_init(&cls_mall.common, tp, head->flags, extack);
+ cls_mall.command = add ?
+ TC_CLSMATCHALL_REPLACE : TC_CLSMATCHALL_DESTROY;
+ cls_mall.exts = &head->exts;
+ cls_mall.cookie = (unsigned long)head;
+
+ err = cb(TC_SETUP_CLSMATCHALL, &cls_mall, cb_priv);
+ if (err) {
+ if (add && tc_skip_sw(head->flags))
+ return err;
+ return 0;
+ }
+
+ tc_cls_offload_cnt_update(block, &head->in_hw_count, &head->flags, add);
+
+ return 0;
+}
+
static int mall_dump(struct net *net, struct tcf_proto *tp, void *fh,
struct sk_buff *skb, struct tcmsg *t)
{
@@ -289,6 +320,7 @@ static struct tcf_proto_ops cls_mall_ops __read_mostly = {
.change = mall_change,
.delete = mall_delete,
.walk = mall_walk,
+ .reoffload = mall_reoffload,
.dump = mall_dump,
.bind_class = mall_bind_class,
.owner = THIS_MODULE,