X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fstaging%2Fwigyori.git;a=blobdiff_plain;f=target%2Flinux%2Flayerscape%2Fpatches-5.4%2F701-net-0052-sdk_dpaa-ceetm-remove-tc-class-reference-counting.patch;fp=target%2Flinux%2Flayerscape%2Fpatches-5.4%2F701-net-0052-sdk_dpaa-ceetm-remove-tc-class-reference-counting.patch;h=473720b41f115afaed7e0f002340b4376d1a25e7;hp=0000000000000000000000000000000000000000;hb=cddd4591404fb4c53dc0b3c0b15b942cdbed4356;hpb=d1d2c0b5579ea4f69a42246c9318539d61ba1999

diff --git a/target/linux/layerscape/patches-5.4/701-net-0052-sdk_dpaa-ceetm-remove-tc-class-reference-counting.patch b/target/linux/layerscape/patches-5.4/701-net-0052-sdk_dpaa-ceetm-remove-tc-class-reference-counting.patch
new file mode 100644
index 0000000000..473720b41f
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0052-sdk_dpaa-ceetm-remove-tc-class-reference-counting.patch
@@ -0,0 +1,106 @@
+From 024d664114310fe103c2c31f2253bed58238951d Mon Sep 17 00:00:00 2001
+From: Camelia Groza <camelia.groza@nxp.com>
+Date: Wed, 17 Jan 2018 16:47:07 +0200
+Subject: [PATCH] sdk_dpaa: ceetm: remove tc class reference counting
+
+Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
+---
+ .../ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c   | 38 +++-------------------
+ .../ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h   |  1 -
+ 2 files changed, 4 insertions(+), 35 deletions(-)
+
+--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
++++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.c
+@@ -774,7 +774,6 @@ static int ceetm_init_prio(struct Qdisc
+ 		}
+ 
+ 		child_cl->common.classid = TC_H_MAKE(sch->handle, (i + 1));
+-		child_cl->refcnt = 1;
+ 		child_cl->parent = sch;
+ 		child_cl->type = CEETM_PRIO;
+ 		child_cl->shaped = priv->shaped;
+@@ -986,7 +985,6 @@ static int ceetm_init_wbfs(struct Qdisc
+ 		}
+ 
+ 		child_cl->common.classid = TC_H_MAKE(sch->handle, (i + 1));
+-		child_cl->refcnt = 1;
+ 		child_cl->parent = sch;
+ 		child_cl->type = CEETM_WBFS;
+ 		child_cl->shaped = priv->shaped;
+@@ -1297,29 +1295,9 @@ static void ceetm_attach(struct Qdisc *s
+ 	}
+ }
+ 
+-static unsigned long ceetm_cls_get(struct Qdisc *sch, u32 classid)
++static unsigned long ceetm_cls_search(struct Qdisc *sch, u32 handle)
+ {
+-	struct ceetm_class *cl;
+-
+-	pr_debug(KBUILD_BASENAME " : %s : classid %X from qdisc %X\n",
+-		 __func__, classid, sch->handle);
+-	cl = ceetm_find(classid, sch);
+-
+-	if (cl)
+-		cl->refcnt++; /* Will decrement in put() */
+-	return (unsigned long)cl;
+-}
+-
+-static void ceetm_cls_put(struct Qdisc *sch, unsigned long arg)
+-{
+-	struct ceetm_class *cl = (struct ceetm_class *)arg;
+-
+-	pr_debug(KBUILD_BASENAME " : %s : classid %X from qdisc %X\n",
+-		 __func__, cl->common.classid, sch->handle);
+-	cl->refcnt--;
+-
+-	if (cl->refcnt == 0)
+-		ceetm_cls_destroy(sch, cl);
++	return (unsigned long)ceetm_find(handle, sch);
+ }
+ 
+ static int ceetm_cls_change_root(struct ceetm_class *cl,
+@@ -1540,7 +1518,6 @@ static int ceetm_cls_change(struct Qdisc
+ 	cl->root.tbl = copt->tbl;
+ 
+ 	cl->common.classid = classid;
+-	cl->refcnt = 1;
+ 	cl->parent = sch;
+ 	cl->root.child = NULL;
+ 	cl->root.wbfs_grp_a = false;
+@@ -1696,15 +1673,9 @@ static int ceetm_cls_delete(struct Qdisc
+ 
+ 	sch_tree_lock(sch);
+ 	qdisc_class_hash_remove(&priv->clhash, &cl->common);
+-	cl->refcnt--;
+-
+-	/* The refcnt should be at least 1 since we have incremented it in
+-	 * get(). Will decrement again in put() where we will call destroy()
+-	 * to actually free the memory if it reaches 0.
+-	 */
+-	WARN_ON(cl->refcnt == 0);
+ 
+ 	sch_tree_unlock(sch);
++	ceetm_cls_destroy(sch, cl);
+ 	return 0;
+ }
+ 
+@@ -1824,8 +1795,7 @@ static void ceetm_tcf_unbind(struct Qdis
+ const struct Qdisc_class_ops ceetm_cls_ops = {
+ 	.graft		=	ceetm_cls_graft,
+ 	.leaf		=	ceetm_cls_leaf,
+-	.get		=	ceetm_cls_get,
+-	.put		=	ceetm_cls_put,
++	.find		=	ceetm_cls_search,
+ 	.change		=	ceetm_cls_change,
+ 	.delete		=	ceetm_cls_delete,
+ 	.walk		=	ceetm_cls_walk,
+--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h
++++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h
+@@ -191,7 +191,6 @@ struct wbfs_c {
+ 
+ struct ceetm_class {
+ 	struct Qdisc_class_common common;
+-	int refcnt; /* usage count of this class */
+ 	struct tcf_proto *filter_list; /* class attached filters */
+ 	struct tcf_block *block;
+ 	struct Qdisc *parent;