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-rw-r--r--net/dsa/dsa_priv.h296
1 files changed, 0 insertions, 296 deletions
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index fcff35b15dd4..eee2c9729e32 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -11,85 +11,8 @@
#include <linux/netdevice.h>
#include <net/dsa.h>
-#include "slave.h"
-
#define DSA_MAX_NUM_OFFLOADING_BRIDGES BITS_PER_LONG
-/* Create 2 modaliases per tagging protocol, one to auto-load the module
- * given the ID reported by get_tag_protocol(), and the other by name.
- */
-#define DSA_TAG_DRIVER_ALIAS "dsa_tag:"
-#define MODULE_ALIAS_DSA_TAG_DRIVER(__proto, __name) \
- MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __name); \
- MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS "id-" \
- __stringify(__proto##_VALUE))
-
-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 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_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)
-
enum {
DSA_NOTIFIER_AGEING_TIME,
DSA_NOTIFIER_BRIDGE_JOIN,
@@ -223,234 +146,15 @@ struct dsa_standalone_event_work {
};
/* dsa.c */
-const struct dsa_device_ops *dsa_tag_driver_get_by_id(int tag_protocol);
-const struct dsa_device_ops *dsa_tag_driver_get_by_name(const char *name);
-void dsa_tag_driver_put(const struct dsa_device_ops *ops);
-
struct net_device *dsa_dev_to_net_device(struct device *dev);
bool dsa_db_equal(const struct dsa_db *a, const struct dsa_db *b);
bool dsa_schedule_work(struct work_struct *work);
-const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops);
-
-static inline int dsa_tag_protocol_overhead(const struct dsa_device_ops *ops)
-{
- return ops->needed_headroom + ops->needed_tailroom;
-}
-
-static inline struct net_device *dsa_master_find_slave(struct net_device *dev,
- int device, int port)
-{
- struct dsa_port *cpu_dp = dev->dsa_ptr;
- struct dsa_switch_tree *dst = cpu_dp->dst;
- struct dsa_port *dp;
-
- list_for_each_entry(dp, &dst->ports, list)
- if (dp->ds->index == device && dp->index == port &&
- dp->type == DSA_PORT_TYPE_USER)
- return dp->slave;
-
- return NULL;
-}
/* netlink.c */
extern struct rtnl_link_ops dsa_link_ops __read_mostly;
-/* If under a bridge with vlan_filtering=0, make sure to send pvid-tagged
- * frames as untagged, since the bridge will not untag them.
- */
-static inline struct sk_buff *dsa_untag_bridge_pvid(struct sk_buff *skb)
-{
- struct dsa_port *dp = dsa_slave_to_port(skb->dev);
- struct net_device *br = dsa_port_bridge_dev_get(dp);
- struct net_device *dev = skb->dev;
- struct net_device *upper_dev;
- u16 vid, pvid, proto;
- int err;
-
- if (!br || br_vlan_enabled(br))
- return skb;
-
- err = br_vlan_get_proto(br, &proto);
- if (err)
- return skb;
-
- /* Move VLAN tag from data to hwaccel */
- if (!skb_vlan_tag_present(skb) && skb->protocol == htons(proto)) {
- skb = skb_vlan_untag(skb);
- if (!skb)
- return NULL;
- }
-
- if (!skb_vlan_tag_present(skb))
- return skb;
-
- vid = skb_vlan_tag_get_id(skb);
-
- /* We already run under an RCU read-side critical section since
- * we are called from netif_receive_skb_list_internal().
- */
- err = br_vlan_get_pvid_rcu(dev, &pvid);
- if (err)
- return skb;
-
- if (vid != pvid)
- return skb;
-
- /* The sad part about attempting to untag from DSA is that we
- * don't know, unless we check, if the skb will end up in
- * the bridge's data path - br_allowed_ingress() - or not.
- * For example, there might be an 8021q upper for the
- * default_pvid of the bridge, which will steal VLAN-tagged traffic
- * from the bridge's data path. This is a configuration that DSA
- * supports because vlan_filtering is 0. In that case, we should
- * definitely keep the tag, to make sure it keeps working.
- */
- upper_dev = __vlan_find_dev_deep_rcu(br, htons(proto), vid);
- if (upper_dev)
- return skb;
-
- __vlan_hwaccel_clear_tag(skb);
-
- return skb;
-}
-
-/* For switches without hardware support for DSA tagging to be able
- * to support termination through the bridge.
- */
-static inline struct net_device *
-dsa_find_designated_bridge_port_by_vid(struct net_device *master, u16 vid)
-{
- struct dsa_port *cpu_dp = master->dsa_ptr;
- struct dsa_switch_tree *dst = cpu_dp->dst;
- struct bridge_vlan_info vinfo;
- struct net_device *slave;
- struct dsa_port *dp;
- int err;
-
- list_for_each_entry(dp, &dst->ports, list) {
- if (dp->type != DSA_PORT_TYPE_USER)
- continue;
-
- if (!dp->bridge)
- continue;
-
- if (dp->stp_state != BR_STATE_LEARNING &&
- dp->stp_state != BR_STATE_FORWARDING)
- continue;
-
- /* Since the bridge might learn this packet, keep the CPU port
- * affinity with the port that will be used for the reply on
- * xmit.
- */
- if (dp->cpu_dp != cpu_dp)
- continue;
-
- slave = dp->slave;
-
- err = br_vlan_get_info_rcu(slave, vid, &vinfo);
- if (err)
- continue;
-
- return slave;
- }
-
- return NULL;
-}
-
-/* If the ingress port offloads the bridge, we mark the frame as autonomously
- * forwarded by hardware, so the software bridge doesn't forward in twice, back
- * to us, because we already did. However, if we're in fallback mode and we do
- * software bridging, we are not offloading it, therefore the dp->bridge
- * pointer is not populated, and flooding needs to be done by software (we are
- * effectively operating in standalone ports mode).
- */
-static inline void dsa_default_offload_fwd_mark(struct sk_buff *skb)
-{
- struct dsa_port *dp = dsa_slave_to_port(skb->dev);
-
- skb->offload_fwd_mark = !!(dp->bridge);
-}
-
-/* Helper for removing DSA header tags from packets in the RX path.
- * Must not be called before skb_pull(len).
- * skb->data
- * |
- * v
- * | | | | | | | | | | | | | | | | | | |
- * +-----------------------+-----------------------+---------------+-------+
- * | Destination MAC | Source MAC | DSA header | EType |
- * +-----------------------+-----------------------+---------------+-------+
- * | |
- * <----- len -----> <----- len ----->
- * |
- * >>>>>>> v
- * >>>>>>> | | | | | | | | | | | | | | |
- * >>>>>>> +-----------------------+-----------------------+-------+
- * >>>>>>> | Destination MAC | Source MAC | EType |
- * +-----------------------+-----------------------+-------+
- * ^
- * |
- * skb->data
- */
-static inline void dsa_strip_etype_header(struct sk_buff *skb, int len)
-{
- memmove(skb->data - ETH_HLEN, skb->data - ETH_HLEN - len, 2 * ETH_ALEN);
-}
-
-/* Helper for creating space for DSA header tags in TX path packets.
- * Must not be called before skb_push(len).
- *
- * Before:
- *
- * <<<<<<< | | | | | | | | | | | | | | |
- * ^ <<<<<<< +-----------------------+-----------------------+-------+
- * | <<<<<<< | Destination MAC | Source MAC | EType |
- * | +-----------------------+-----------------------+-------+
- * <----- len ----->
- * |
- * |
- * skb->data
- *
- * After:
- *
- * | | | | | | | | | | | | | | | | | | |
- * +-----------------------+-----------------------+---------------+-------+
- * | Destination MAC | Source MAC | DSA header | EType |
- * +-----------------------+-----------------------+---------------+-------+
- * ^ | |
- * | <----- len ----->
- * skb->data
- */
-static inline void dsa_alloc_etype_header(struct sk_buff *skb, int len)
-{
- memmove(skb->data, skb->data + len, 2 * ETH_ALEN);
-}
-
-/* On RX, eth_type_trans() on the DSA master pulls ETH_HLEN bytes starting from
- * skb_mac_header(skb), which leaves skb->data pointing at the first byte after
- * what the DSA master perceives as the EtherType (the beginning of the L3
- * protocol). Since DSA EtherType header taggers treat the EtherType as part of
- * the DSA tag itself, and the EtherType is 2 bytes in length, the DSA header
- * is located 2 bytes behind skb->data. Note that EtherType in this context
- * means the first 2 bytes of the DSA header, not the encapsulated EtherType
- * that will become visible after the DSA header is stripped.
- */
-static inline void *dsa_etype_header_pos_rx(struct sk_buff *skb)
-{
- return skb->data - 2;
-}
-
-/* On TX, skb->data points to skb_mac_header(skb), which means that EtherType
- * header taggers start exactly where the EtherType is (the EtherType is
- * treated as part of the DSA header).
- */
-static inline void *dsa_etype_header_pos_tx(struct sk_buff *skb)
-{
- return skb->data + 2 * ETH_ALEN;
-}
-
/* switch.c */
int dsa_switch_register_notifier(struct dsa_switch *ds);
void dsa_switch_unregister_notifier(struct dsa_switch *ds);
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-20 13:46:43 +0300