714 lines
20 KiB
C
714 lines
20 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
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* Copyright (c) 2008-2009 Marvell Semiconductor
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*/
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#ifndef __LINUX_NET_DSA_H
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#define __LINUX_NET_DSA_H
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#include <linux/if.h>
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#include <linux/if_ether.h>
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#include <linux/list.h>
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#include <linux/notifier.h>
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#include <linux/timer.h>
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#include <linux/workqueue.h>
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#include <linux/of.h>
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#include <linux/ethtool.h>
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#include <linux/net_tstamp.h>
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#include <linux/phy.h>
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#include <linux/platform_data/dsa.h>
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#include <linux/phylink.h>
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#include <net/devlink.h>
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#include <net/switchdev.h>
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struct tc_action;
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struct phy_device;
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struct fixed_phy_status;
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struct phylink_link_state;
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#define DSA_TAG_PROTO_NONE_VALUE 0
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#define DSA_TAG_PROTO_BRCM_VALUE 1
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#define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2
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#define DSA_TAG_PROTO_DSA_VALUE 3
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#define DSA_TAG_PROTO_EDSA_VALUE 4
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#define DSA_TAG_PROTO_GSWIP_VALUE 5
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#define DSA_TAG_PROTO_KSZ9477_VALUE 6
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#define DSA_TAG_PROTO_KSZ9893_VALUE 7
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#define DSA_TAG_PROTO_LAN9303_VALUE 8
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#define DSA_TAG_PROTO_MTK_VALUE 9
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#define DSA_TAG_PROTO_QCA_VALUE 10
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#define DSA_TAG_PROTO_TRAILER_VALUE 11
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#define DSA_TAG_PROTO_8021Q_VALUE 12
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#define DSA_TAG_PROTO_SJA1105_VALUE 13
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#define DSA_TAG_PROTO_KSZ8795_VALUE 14
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enum dsa_tag_protocol {
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DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE,
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DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE,
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DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE,
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DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE,
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DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE,
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DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE,
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DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE,
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DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE,
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DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE,
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DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE,
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DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE,
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DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE,
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DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE,
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DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE,
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DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE,
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};
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struct packet_type;
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struct dsa_switch;
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struct dsa_device_ops {
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struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
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struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
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struct packet_type *pt);
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int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
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int *offset);
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/* Used to determine which traffic should match the DSA filter in
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* eth_type_trans, and which, if any, should bypass it and be processed
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* as regular on the master net device.
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*/
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bool (*filter)(const struct sk_buff *skb, struct net_device *dev);
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unsigned int overhead;
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const char *name;
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enum dsa_tag_protocol proto;
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};
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#define DSA_TAG_DRIVER_ALIAS "dsa_tag-"
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#define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \
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MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE))
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struct dsa_skb_cb {
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struct sk_buff *clone;
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bool deferred_xmit;
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};
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struct __dsa_skb_cb {
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struct dsa_skb_cb cb;
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u8 priv[48 - sizeof(struct dsa_skb_cb)];
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};
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#define __DSA_SKB_CB(skb) ((struct __dsa_skb_cb *)((skb)->cb))
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#define DSA_SKB_CB(skb) ((struct dsa_skb_cb *)((skb)->cb))
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#define DSA_SKB_CB_PRIV(skb) \
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((void *)(skb)->cb + offsetof(struct __dsa_skb_cb, priv))
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struct dsa_switch_tree {
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struct list_head list;
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/* Notifier chain for switch-wide events */
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struct raw_notifier_head nh;
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/* Tree identifier */
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unsigned int index;
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/* Number of switches attached to this tree */
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struct kref refcount;
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/* Has this tree been applied to the hardware? */
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bool setup;
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/*
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* Configuration data for the platform device that owns
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* this dsa switch tree instance.
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*/
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struct dsa_platform_data *pd;
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/*
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* The switch port to which the CPU is attached.
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*/
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struct dsa_port *cpu_dp;
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/*
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* Data for the individual switch chips.
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*/
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struct dsa_switch *ds[DSA_MAX_SWITCHES];
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};
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/* TC matchall action types, only mirroring for now */
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enum dsa_port_mall_action_type {
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DSA_PORT_MALL_MIRROR,
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};
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/* TC mirroring entry */
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struct dsa_mall_mirror_tc_entry {
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u8 to_local_port;
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bool ingress;
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};
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/* TC matchall entry */
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struct dsa_mall_tc_entry {
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struct list_head list;
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unsigned long cookie;
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enum dsa_port_mall_action_type type;
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union {
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struct dsa_mall_mirror_tc_entry mirror;
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};
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};
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struct dsa_port {
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/* A CPU port is physically connected to a master device.
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* A user port exposed to userspace has a slave device.
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*/
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union {
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struct net_device *master;
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struct net_device *slave;
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};
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/* CPU port tagging operations used by master or slave devices */
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const struct dsa_device_ops *tag_ops;
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/* Copies for faster access in master receive hot path */
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struct dsa_switch_tree *dst;
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struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
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struct packet_type *pt);
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bool (*filter)(const struct sk_buff *skb, struct net_device *dev);
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enum {
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DSA_PORT_TYPE_UNUSED = 0,
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DSA_PORT_TYPE_CPU,
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DSA_PORT_TYPE_DSA,
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DSA_PORT_TYPE_USER,
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} type;
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struct dsa_switch *ds;
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unsigned int index;
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const char *name;
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struct dsa_port *cpu_dp;
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const char *mac;
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struct device_node *dn;
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unsigned int ageing_time;
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bool vlan_filtering;
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u8 stp_state;
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struct net_device *bridge_dev;
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struct devlink_port devlink_port;
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struct phylink *pl;
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struct phylink_config pl_config;
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struct work_struct xmit_work;
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struct sk_buff_head xmit_queue;
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/*
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* Give the switch driver somewhere to hang its per-port private data
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* structures (accessible from the tagger).
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*/
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void *priv;
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/*
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* Original copy of the master netdev ethtool_ops
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*/
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const struct ethtool_ops *orig_ethtool_ops;
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/*
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* Original copy of the master netdev net_device_ops
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*/
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const struct net_device_ops *orig_ndo_ops;
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};
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struct dsa_switch {
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struct device *dev;
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/*
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* Parent switch tree, and switch index.
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*/
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struct dsa_switch_tree *dst;
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unsigned int index;
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/* Listener for switch fabric events */
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struct notifier_block nb;
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/*
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* Give the switch driver somewhere to hang its private data
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* structure.
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*/
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void *priv;
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/*
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* Configuration data for this switch.
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*/
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struct dsa_chip_data *cd;
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/*
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* The switch operations.
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*/
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const struct dsa_switch_ops *ops;
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/*
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* An array of which element [a] indicates which port on this
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* switch should be used to send packets to that are destined
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* for switch a. Can be NULL if there is only one switch chip.
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*/
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s8 rtable[DSA_MAX_SWITCHES];
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/*
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* Slave mii_bus and devices for the individual ports.
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*/
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u32 phys_mii_mask;
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struct mii_bus *slave_mii_bus;
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/* Ageing Time limits in msecs */
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unsigned int ageing_time_min;
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unsigned int ageing_time_max;
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/* devlink used to represent this switch device */
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struct devlink *devlink;
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/* Number of switch port queues */
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unsigned int num_tx_queues;
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/* Disallow bridge core from requesting different VLAN awareness
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* settings on ports if not hardware-supported
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*/
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bool vlan_filtering_is_global;
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/* In case vlan_filtering_is_global is set, the VLAN awareness state
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* should be retrieved from here and not from the per-port settings.
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*/
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bool vlan_filtering;
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/* Dynamically allocated ports, keep last */
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size_t num_ports;
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struct dsa_port ports[];
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};
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static inline const struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
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{
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return &ds->ports[p];
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}
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static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p)
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{
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return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED;
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}
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static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
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{
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return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU;
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}
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static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
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{
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return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA;
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}
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static inline bool dsa_is_user_port(struct dsa_switch *ds, int p)
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{
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return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER;
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}
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static inline u32 dsa_user_ports(struct dsa_switch *ds)
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{
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u32 mask = 0;
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int p;
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for (p = 0; p < ds->num_ports; p++)
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if (dsa_is_user_port(ds, p))
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mask |= BIT(p);
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return mask;
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}
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/* Return the local port used to reach an arbitrary switch port */
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static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device,
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int port)
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{
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if (device == ds->index)
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return port;
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else
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return ds->rtable[device];
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}
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/* Return the local port used to reach the dedicated CPU port */
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static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
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{
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const struct dsa_port *dp = dsa_to_port(ds, port);
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const struct dsa_port *cpu_dp = dp->cpu_dp;
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if (!cpu_dp)
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return port;
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return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
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}
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static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
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{
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const struct dsa_switch *ds = dp->ds;
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if (ds->vlan_filtering_is_global)
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return ds->vlan_filtering;
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else
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return dp->vlan_filtering;
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}
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typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
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bool is_static, void *data);
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struct dsa_switch_ops {
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enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
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int port);
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int (*setup)(struct dsa_switch *ds);
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void (*teardown)(struct dsa_switch *ds);
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u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
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/*
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* Access to the switch's PHY registers.
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*/
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int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
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int (*phy_write)(struct dsa_switch *ds, int port,
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int regnum, u16 val);
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/*
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* Link state adjustment (called from libphy)
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*/
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void (*adjust_link)(struct dsa_switch *ds, int port,
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struct phy_device *phydev);
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void (*fixed_link_update)(struct dsa_switch *ds, int port,
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struct fixed_phy_status *st);
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/*
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* PHYLINK integration
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*/
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void (*phylink_validate)(struct dsa_switch *ds, int port,
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unsigned long *supported,
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struct phylink_link_state *state);
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int (*phylink_mac_link_state)(struct dsa_switch *ds, int port,
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struct phylink_link_state *state);
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void (*phylink_mac_config)(struct dsa_switch *ds, int port,
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unsigned int mode,
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const struct phylink_link_state *state);
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void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port);
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void (*phylink_mac_link_down)(struct dsa_switch *ds, int port,
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unsigned int mode,
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phy_interface_t interface);
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void (*phylink_mac_link_up)(struct dsa_switch *ds, int port,
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unsigned int mode,
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phy_interface_t interface,
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struct phy_device *phydev);
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void (*phylink_fixed_state)(struct dsa_switch *ds, int port,
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struct phylink_link_state *state);
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/*
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* ethtool hardware statistics.
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*/
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void (*get_strings)(struct dsa_switch *ds, int port,
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u32 stringset, uint8_t *data);
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void (*get_ethtool_stats)(struct dsa_switch *ds,
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int port, uint64_t *data);
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int (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
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void (*get_ethtool_phy_stats)(struct dsa_switch *ds,
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int port, uint64_t *data);
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/*
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* ethtool Wake-on-LAN
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*/
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void (*get_wol)(struct dsa_switch *ds, int port,
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struct ethtool_wolinfo *w);
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int (*set_wol)(struct dsa_switch *ds, int port,
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struct ethtool_wolinfo *w);
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/*
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* ethtool timestamp info
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*/
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int (*get_ts_info)(struct dsa_switch *ds, int port,
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struct ethtool_ts_info *ts);
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/*
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* Suspend and resume
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*/
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int (*suspend)(struct dsa_switch *ds);
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int (*resume)(struct dsa_switch *ds);
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/*
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* Port enable/disable
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*/
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int (*port_enable)(struct dsa_switch *ds, int port,
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struct phy_device *phy);
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void (*port_disable)(struct dsa_switch *ds, int port);
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/*
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* Port's MAC EEE settings
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*/
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int (*set_mac_eee)(struct dsa_switch *ds, int port,
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struct ethtool_eee *e);
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int (*get_mac_eee)(struct dsa_switch *ds, int port,
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struct ethtool_eee *e);
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/* EEPROM access */
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int (*get_eeprom_len)(struct dsa_switch *ds);
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int (*get_eeprom)(struct dsa_switch *ds,
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struct ethtool_eeprom *eeprom, u8 *data);
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int (*set_eeprom)(struct dsa_switch *ds,
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struct ethtool_eeprom *eeprom, u8 *data);
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/*
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* Register access.
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*/
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int (*get_regs_len)(struct dsa_switch *ds, int port);
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void (*get_regs)(struct dsa_switch *ds, int port,
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struct ethtool_regs *regs, void *p);
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/*
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* Bridge integration
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*/
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int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
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int (*port_bridge_join)(struct dsa_switch *ds, int port,
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struct net_device *bridge);
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void (*port_bridge_leave)(struct dsa_switch *ds, int port,
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struct net_device *bridge);
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void (*port_stp_state_set)(struct dsa_switch *ds, int port,
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u8 state);
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void (*port_fast_age)(struct dsa_switch *ds, int port);
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int (*port_egress_floods)(struct dsa_switch *ds, int port,
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bool unicast, bool multicast);
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/*
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* VLAN support
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*/
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int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
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bool vlan_filtering);
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int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
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const struct switchdev_obj_port_vlan *vlan);
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void (*port_vlan_add)(struct dsa_switch *ds, int port,
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const struct switchdev_obj_port_vlan *vlan);
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int (*port_vlan_del)(struct dsa_switch *ds, int port,
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const struct switchdev_obj_port_vlan *vlan);
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/*
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* Forwarding database
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*/
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int (*port_fdb_add)(struct dsa_switch *ds, int port,
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const unsigned char *addr, u16 vid);
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int (*port_fdb_del)(struct dsa_switch *ds, int port,
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const unsigned char *addr, u16 vid);
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int (*port_fdb_dump)(struct dsa_switch *ds, int port,
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dsa_fdb_dump_cb_t *cb, void *data);
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/*
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* Multicast database
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*/
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int (*port_mdb_prepare)(struct dsa_switch *ds, int port,
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const struct switchdev_obj_port_mdb *mdb);
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void (*port_mdb_add)(struct dsa_switch *ds, int port,
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const struct switchdev_obj_port_mdb *mdb);
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int (*port_mdb_del)(struct dsa_switch *ds, int port,
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const struct switchdev_obj_port_mdb *mdb);
|
|
/*
|
|
* RXNFC
|
|
*/
|
|
int (*get_rxnfc)(struct dsa_switch *ds, int port,
|
|
struct ethtool_rxnfc *nfc, u32 *rule_locs);
|
|
int (*set_rxnfc)(struct dsa_switch *ds, int port,
|
|
struct ethtool_rxnfc *nfc);
|
|
|
|
/*
|
|
* TC integration
|
|
*/
|
|
int (*port_mirror_add)(struct dsa_switch *ds, int port,
|
|
struct dsa_mall_mirror_tc_entry *mirror,
|
|
bool ingress);
|
|
void (*port_mirror_del)(struct dsa_switch *ds, int port,
|
|
struct dsa_mall_mirror_tc_entry *mirror);
|
|
int (*port_setup_tc)(struct dsa_switch *ds, int port,
|
|
enum tc_setup_type type, void *type_data);
|
|
|
|
/*
|
|
* Cross-chip operations
|
|
*/
|
|
int (*crosschip_bridge_join)(struct dsa_switch *ds, int sw_index,
|
|
int port, struct net_device *br);
|
|
void (*crosschip_bridge_leave)(struct dsa_switch *ds, int sw_index,
|
|
int port, struct net_device *br);
|
|
|
|
/*
|
|
* PTP functionality
|
|
*/
|
|
int (*port_hwtstamp_get)(struct dsa_switch *ds, int port,
|
|
struct ifreq *ifr);
|
|
int (*port_hwtstamp_set)(struct dsa_switch *ds, int port,
|
|
struct ifreq *ifr);
|
|
bool (*port_txtstamp)(struct dsa_switch *ds, int port,
|
|
struct sk_buff *clone, unsigned int type);
|
|
bool (*port_rxtstamp)(struct dsa_switch *ds, int port,
|
|
struct sk_buff *skb, unsigned int type);
|
|
|
|
/*
|
|
* Deferred frame Tx
|
|
*/
|
|
netdev_tx_t (*port_deferred_xmit)(struct dsa_switch *ds, int port,
|
|
struct sk_buff *skb);
|
|
};
|
|
|
|
struct dsa_switch_driver {
|
|
struct list_head list;
|
|
const struct dsa_switch_ops *ops;
|
|
};
|
|
|
|
struct net_device *dsa_dev_to_net_device(struct device *dev);
|
|
|
|
/* Keep inline for faster access in hot path */
|
|
static inline bool netdev_uses_dsa(struct net_device *dev)
|
|
{
|
|
#if IS_ENABLED(CONFIG_NET_DSA)
|
|
return dev->dsa_ptr && dev->dsa_ptr->rcv;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
static inline bool dsa_can_decode(const struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
#if IS_ENABLED(CONFIG_NET_DSA)
|
|
return !dev->dsa_ptr->filter || dev->dsa_ptr->filter(skb, dev);
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
struct dsa_switch *dsa_switch_alloc(struct device *dev, size_t n);
|
|
void dsa_unregister_switch(struct dsa_switch *ds);
|
|
int dsa_register_switch(struct dsa_switch *ds);
|
|
#ifdef CONFIG_PM_SLEEP
|
|
int dsa_switch_suspend(struct dsa_switch *ds);
|
|
int dsa_switch_resume(struct dsa_switch *ds);
|
|
#else
|
|
static inline int dsa_switch_suspend(struct dsa_switch *ds)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline int dsa_switch_resume(struct dsa_switch *ds)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
enum dsa_notifier_type {
|
|
DSA_PORT_REGISTER,
|
|
DSA_PORT_UNREGISTER,
|
|
};
|
|
|
|
struct dsa_notifier_info {
|
|
struct net_device *dev;
|
|
};
|
|
|
|
struct dsa_notifier_register_info {
|
|
struct dsa_notifier_info info; /* must be first */
|
|
struct net_device *master;
|
|
unsigned int port_number;
|
|
unsigned int switch_number;
|
|
};
|
|
|
|
static inline struct net_device *
|
|
dsa_notifier_info_to_dev(const struct dsa_notifier_info *info)
|
|
{
|
|
return info->dev;
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_NET_DSA)
|
|
int register_dsa_notifier(struct notifier_block *nb);
|
|
int unregister_dsa_notifier(struct notifier_block *nb);
|
|
int call_dsa_notifiers(unsigned long val, struct net_device *dev,
|
|
struct dsa_notifier_info *info);
|
|
#else
|
|
static inline int register_dsa_notifier(struct notifier_block *nb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int unregister_dsa_notifier(struct notifier_block *nb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int call_dsa_notifiers(unsigned long val, struct net_device *dev,
|
|
struct dsa_notifier_info *info)
|
|
{
|
|
return NOTIFY_DONE;
|
|
}
|
|
#endif
|
|
|
|
/* Broadcom tag specific helpers to insert and extract queue/port number */
|
|
#define BRCM_TAG_SET_PORT_QUEUE(p, q) ((p) << 8 | q)
|
|
#define BRCM_TAG_GET_PORT(v) ((v) >> 8)
|
|
#define BRCM_TAG_GET_QUEUE(v) ((v) & 0xff)
|
|
|
|
|
|
netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev);
|
|
int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data);
|
|
int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data);
|
|
int dsa_port_get_phy_sset_count(struct dsa_port *dp);
|
|
void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up);
|
|
|
|
struct dsa_tag_driver {
|
|
const struct dsa_device_ops *ops;
|
|
struct list_head list;
|
|
struct module *owner;
|
|
};
|
|
|
|
void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[],
|
|
unsigned int count,
|
|
struct module *owner);
|
|
void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[],
|
|
unsigned int count);
|
|
|
|
#define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \
|
|
static int __init dsa_tag_driver_module_init(void) \
|
|
{ \
|
|
dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \
|
|
THIS_MODULE); \
|
|
return 0; \
|
|
} \
|
|
module_init(dsa_tag_driver_module_init); \
|
|
\
|
|
static void __exit dsa_tag_driver_module_exit(void) \
|
|
{ \
|
|
dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \
|
|
} \
|
|
module_exit(dsa_tag_driver_module_exit)
|
|
|
|
/**
|
|
* module_dsa_tag_drivers() - Helper macro for registering DSA tag
|
|
* drivers
|
|
* @__ops_array: Array of tag driver strucutres
|
|
*
|
|
* Helper macro for DSA tag drivers which do not do anything special
|
|
* in module init/exit. Each module may only use this macro once, and
|
|
* calling it replaces module_init() and module_exit().
|
|
*/
|
|
#define module_dsa_tag_drivers(__ops_array) \
|
|
dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array))
|
|
|
|
#define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops
|
|
|
|
/* Create a static structure we can build a linked list of dsa_tag
|
|
* drivers
|
|
*/
|
|
#define DSA_TAG_DRIVER(__ops) \
|
|
static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \
|
|
.ops = &__ops, \
|
|
}
|
|
|
|
/**
|
|
* module_dsa_tag_driver() - Helper macro for registering a single DSA tag
|
|
* driver
|
|
* @__ops: Single tag driver structures
|
|
*
|
|
* Helper macro for DSA tag drivers which do not do anything special
|
|
* in module init/exit. Each module may only use this macro once, and
|
|
* calling it replaces module_init() and module_exit().
|
|
*/
|
|
#define module_dsa_tag_driver(__ops) \
|
|
DSA_TAG_DRIVER(__ops); \
|
|
\
|
|
static struct dsa_tag_driver *dsa_tag_driver_array[] = { \
|
|
&DSA_TAG_DRIVER_NAME(__ops) \
|
|
}; \
|
|
module_dsa_tag_drivers(dsa_tag_driver_array)
|
|
#endif
|
|
|