Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 461e8a7..541fb51 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -1,11 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
* Copyright (c) 2008-2009 Marvell Semiconductor
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
*/
#ifndef __LINUX_NET_DSA_H
@@ -21,6 +17,8 @@
#include <linux/ethtool.h>
#include <linux/net_tstamp.h>
#include <linux/phy.h>
+#include <linux/platform_data/dsa.h>
+#include <linux/phylink.h>
#include <net/devlink.h>
#include <net/switchdev.h>
@@ -29,78 +27,38 @@
struct fixed_phy_status;
struct phylink_link_state;
+#define DSA_TAG_PROTO_NONE_VALUE 0
+#define DSA_TAG_PROTO_BRCM_VALUE 1
+#define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2
+#define DSA_TAG_PROTO_DSA_VALUE 3
+#define DSA_TAG_PROTO_EDSA_VALUE 4
+#define DSA_TAG_PROTO_GSWIP_VALUE 5
+#define DSA_TAG_PROTO_KSZ9477_VALUE 6
+#define DSA_TAG_PROTO_KSZ9893_VALUE 7
+#define DSA_TAG_PROTO_LAN9303_VALUE 8
+#define DSA_TAG_PROTO_MTK_VALUE 9
+#define DSA_TAG_PROTO_QCA_VALUE 10
+#define DSA_TAG_PROTO_TRAILER_VALUE 11
+#define DSA_TAG_PROTO_8021Q_VALUE 12
+#define DSA_TAG_PROTO_SJA1105_VALUE 13
+#define DSA_TAG_PROTO_KSZ8795_VALUE 14
+
enum dsa_tag_protocol {
- DSA_TAG_PROTO_NONE = 0,
- DSA_TAG_PROTO_BRCM,
- DSA_TAG_PROTO_BRCM_PREPEND,
- DSA_TAG_PROTO_DSA,
- DSA_TAG_PROTO_EDSA,
- DSA_TAG_PROTO_KSZ,
- DSA_TAG_PROTO_LAN9303,
- DSA_TAG_PROTO_MTK,
- DSA_TAG_PROTO_QCA,
- DSA_TAG_PROTO_TRAILER,
- DSA_TAG_LAST, /* MUST BE LAST */
-};
-
-#define DSA_MAX_SWITCHES 4
-#define DSA_MAX_PORTS 12
-
-#define DSA_RTABLE_NONE -1
-
-struct dsa_chip_data {
- /*
- * How to access the switch configuration registers.
- */
- struct device *host_dev;
- int sw_addr;
-
- /*
- * Reference to network devices
- */
- struct device *netdev[DSA_MAX_PORTS];
-
- /* set to size of eeprom if supported by the switch */
- int eeprom_len;
-
- /* Device tree node pointer for this specific switch chip
- * used during switch setup in case additional properties
- * and resources needs to be used
- */
- struct device_node *of_node;
-
- /*
- * The names of the switch's ports. Use "cpu" to
- * designate the switch port that the cpu is connected to,
- * "dsa" to indicate that this port is a DSA link to
- * another switch, NULL to indicate the port is unused,
- * or any other string to indicate this is a physical port.
- */
- char *port_names[DSA_MAX_PORTS];
- struct device_node *port_dn[DSA_MAX_PORTS];
-
- /*
- * An array of which element [a] indicates which port on this
- * switch should be used to send packets to that are destined
- * for switch a. Can be NULL if there is only one switch chip.
- */
- s8 rtable[DSA_MAX_SWITCHES];
-};
-
-struct dsa_platform_data {
- /*
- * Reference to a Linux network interface that connects
- * to the root switch chip of the tree.
- */
- struct device *netdev;
- struct net_device *of_netdev;
-
- /*
- * Info structs describing each of the switch chips
- * connected via this network interface.
- */
- int nr_chips;
- struct dsa_chip_data *chip;
+ DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE,
+ DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE,
+ DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE,
+ DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE,
+ DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE,
+ DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE,
+ DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE,
+ DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE,
+ DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE,
+ DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE,
+ DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE,
+ DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE,
+ DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE,
+ DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE,
+ DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE,
};
struct packet_type;
@@ -112,8 +70,37 @@
struct packet_type *pt);
int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
int *offset);
+ /* Used to determine which traffic should match the DSA filter in
+ * eth_type_trans, and which, if any, should bypass it and be processed
+ * as regular on the master net device.
+ */
+ bool (*filter)(const struct sk_buff *skb, struct net_device *dev);
+ unsigned int overhead;
+ const char *name;
+ enum dsa_tag_protocol proto;
};
+#define DSA_TAG_DRIVER_ALIAS "dsa_tag-"
+#define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \
+ MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE))
+
+struct dsa_skb_cb {
+ struct sk_buff *clone;
+ bool deferred_xmit;
+};
+
+struct __dsa_skb_cb {
+ struct dsa_skb_cb cb;
+ u8 priv[48 - sizeof(struct dsa_skb_cb)];
+};
+
+#define __DSA_SKB_CB(skb) ((struct __dsa_skb_cb *)((skb)->cb))
+
+#define DSA_SKB_CB(skb) ((struct dsa_skb_cb *)((skb)->cb))
+
+#define DSA_SKB_CB_PRIV(skb) \
+ ((void *)(skb)->cb + offsetof(struct __dsa_skb_cb, priv))
+
struct dsa_switch_tree {
struct list_head list;
@@ -184,6 +171,7 @@
struct dsa_switch_tree *dst;
struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt);
+ bool (*filter)(const struct sk_buff *skb, struct net_device *dev);
enum {
DSA_PORT_TYPE_UNUSED = 0,
@@ -195,17 +183,35 @@
struct dsa_switch *ds;
unsigned int index;
const char *name;
- const struct dsa_port *cpu_dp;
+ struct dsa_port *cpu_dp;
+ const char *mac;
struct device_node *dn;
unsigned int ageing_time;
+ bool vlan_filtering;
u8 stp_state;
struct net_device *bridge_dev;
struct devlink_port devlink_port;
struct phylink *pl;
+ struct phylink_config pl_config;
+
+ struct work_struct xmit_work;
+ struct sk_buff_head xmit_queue;
+
+ /*
+ * Give the switch driver somewhere to hang its per-port private data
+ * structures (accessible from the tagger).
+ */
+ void *priv;
+
/*
* Original copy of the master netdev ethtool_ops
*/
const struct ethtool_ops *orig_ethtool_ops;
+
+ /*
+ * Original copy of the master netdev net_device_ops
+ */
+ const struct net_device_ops *orig_ndo_ops;
};
struct dsa_switch {
@@ -259,8 +265,15 @@
/* Number of switch port queues */
unsigned int num_tx_queues;
- unsigned long *bitmap;
- unsigned long _bitmap;
+ /* Disallow bridge core from requesting different VLAN awareness
+ * settings on ports if not hardware-supported
+ */
+ bool vlan_filtering_is_global;
+
+ /* In case vlan_filtering_is_global is set, the VLAN awareness state
+ * should be retrieved from here and not from the per-port settings.
+ */
+ bool vlan_filtering;
/* Dynamically allocated ports, keep last */
size_t num_ports;
@@ -326,22 +339,24 @@
return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
}
+static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
+{
+ const struct dsa_switch *ds = dp->ds;
+
+ if (ds->vlan_filtering_is_global)
+ return ds->vlan_filtering;
+ else
+ return dp->vlan_filtering;
+}
+
typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
bool is_static, void *data);
struct dsa_switch_ops {
-#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
- /*
- * Legacy probing.
- */
- const char *(*probe)(struct device *dsa_dev,
- struct device *host_dev, int sw_addr,
- void **priv);
-#endif
-
enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
int port);
int (*setup)(struct dsa_switch *ds);
+ void (*teardown)(struct dsa_switch *ds);
u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
/*
@@ -416,8 +431,7 @@
*/
int (*port_enable)(struct dsa_switch *ds, int port,
struct phy_device *phy);
- void (*port_disable)(struct dsa_switch *ds, int port,
- struct phy_device *phy);
+ void (*port_disable)(struct dsa_switch *ds, int port);
/*
* Port's MAC EEE settings
@@ -452,6 +466,8 @@
void (*port_stp_state_set)(struct dsa_switch *ds, int port,
u8 state);
void (*port_fast_age)(struct dsa_switch *ds, int port);
+ int (*port_egress_floods)(struct dsa_switch *ds, int port,
+ bool unicast, bool multicast);
/*
* VLAN support
@@ -499,6 +515,8 @@
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
@@ -519,6 +537,12 @@
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 {
@@ -526,20 +550,6 @@
const struct dsa_switch_ops *ops;
};
-#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
-/* Legacy driver registration */
-void register_switch_driver(struct dsa_switch_driver *type);
-void unregister_switch_driver(struct dsa_switch_driver *type);
-struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
-
-#else
-static inline void register_switch_driver(struct dsa_switch_driver *type) { }
-static inline void unregister_switch_driver(struct dsa_switch_driver *type) { }
-static inline struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev)
-{
- return NULL;
-}
-#endif
struct net_device *dsa_dev_to_net_device(struct device *dev);
/* Keep inline for faster access in hot path */
@@ -551,6 +561,15 @@
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);
@@ -619,9 +638,76 @@
#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
+