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1126 lines
33 KiB
1126 lines
33 KiB
/* 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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#define DSA_TAG_PROTO_OCELOT_VALUE 15 |
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#define DSA_TAG_PROTO_AR9331_VALUE 16 |
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#define DSA_TAG_PROTO_RTL4_A_VALUE 17 |
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#define DSA_TAG_PROTO_HELLCREEK_VALUE 18 |
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#define DSA_TAG_PROTO_XRS700X_VALUE 19 |
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#define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20 |
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#define DSA_TAG_PROTO_SEVILLE_VALUE 21 |
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#define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22 |
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#define DSA_TAG_PROTO_SJA1110_VALUE 23 |
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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_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_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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DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, |
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DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, |
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DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, |
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DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, |
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DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, |
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DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, |
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DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, |
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DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_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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void (*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 needed_headroom; |
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unsigned int needed_tailroom; |
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const char *name; |
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enum dsa_tag_protocol proto; |
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/* Some tagging protocols either mangle or shift the destination MAC |
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* address, in which case the DSA master would drop packets on ingress |
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* if what it understands out of the destination MAC address is not in |
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* its RX filter. |
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*/ |
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bool promisc_on_master; |
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}; |
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/* This structure defines the control interfaces that are overlayed by the |
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* DSA layer on top of the DSA CPU/management net_device instance. This is |
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* used by the core net_device layer while calling various net_device_ops |
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* function pointers. |
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*/ |
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struct dsa_netdevice_ops { |
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int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, |
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int cmd); |
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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_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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/* Tagging protocol operations */ |
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const struct dsa_device_ops *tag_ops; |
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/* Default tagging protocol preferred by the switches in this |
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* tree. |
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*/ |
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enum dsa_tag_protocol default_proto; |
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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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/* List of switch ports */ |
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struct list_head ports; |
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/* List of DSA links composing the routing table */ |
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struct list_head rtable; |
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/* Maps offloaded LAG netdevs to a zero-based linear ID for |
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* drivers that need it. |
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*/ |
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struct net_device **lags; |
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unsigned int lags_len; |
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}; |
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#define dsa_lags_foreach_id(_id, _dst) \ |
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for ((_id) = 0; (_id) < (_dst)->lags_len; (_id)++) \ |
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if ((_dst)->lags[(_id)]) |
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#define dsa_lag_foreach_port(_dp, _dst, _lag) \ |
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list_for_each_entry((_dp), &(_dst)->ports, list) \ |
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if ((_dp)->lag_dev == (_lag)) |
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#define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ |
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list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ |
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if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) |
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static inline struct net_device *dsa_lag_dev(struct dsa_switch_tree *dst, |
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unsigned int id) |
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{ |
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return dst->lags[id]; |
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} |
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static inline int dsa_lag_id(struct dsa_switch_tree *dst, |
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struct net_device *lag) |
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{ |
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unsigned int id; |
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dsa_lags_foreach_id(id, dst) { |
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if (dsa_lag_dev(dst, id) == lag) |
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return id; |
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} |
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return -ENODEV; |
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} |
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/* TC matchall action types */ |
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enum dsa_port_mall_action_type { |
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DSA_PORT_MALL_MIRROR, |
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DSA_PORT_MALL_POLICER, |
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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 port policer entry */ |
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struct dsa_mall_policer_tc_entry { |
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u32 burst; |
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u64 rate_bytes_per_sec; |
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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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struct dsa_mall_policer_tc_entry policer; |
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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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/* Copy of the tagging protocol operations, for quicker access |
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* in the data path. Valid only for the CPU ports. |
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*/ |
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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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u8 mac[ETH_ALEN]; |
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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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bool devlink_port_setup; |
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struct phylink *pl; |
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struct phylink_config pl_config; |
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struct net_device *lag_dev; |
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bool lag_tx_enabled; |
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struct net_device *hsr_dev; |
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struct list_head list; |
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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 dsa_netdevice_ops *netdev_ops; |
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/* List of MAC addresses that must be forwarded on this port. |
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* These are only valid on CPU ports and DSA links. |
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*/ |
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struct list_head fdbs; |
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struct list_head mdbs; |
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bool setup; |
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}; |
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/* TODO: ideally DSA ports would have a single dp->link_dp member, |
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* and no dst->rtable nor this struct dsa_link would be needed, |
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* but this would require some more complex tree walking, |
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* so keep it stupid at the moment and list them all. |
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*/ |
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struct dsa_link { |
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struct dsa_port *dp; |
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struct dsa_port *link_dp; |
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struct list_head list; |
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}; |
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struct dsa_mac_addr { |
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unsigned char addr[ETH_ALEN]; |
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u16 vid; |
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refcount_t refcount; |
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struct list_head list; |
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}; |
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struct dsa_switch { |
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bool setup; |
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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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* 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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/* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges |
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* that have vlan_filtering=0. All drivers should ideally set this (and |
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* then the option would get removed), but it is unknown whether this |
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* would break things or not. |
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*/ |
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bool configure_vlan_while_not_filtering; |
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/* If the switch driver always programs the CPU port as egress tagged |
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* despite the VLAN configuration indicating otherwise, then setting |
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* @untag_bridge_pvid will force the DSA receive path to pop the bridge's |
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* default_pvid VLAN tagged frames to offer a consistent behavior |
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* between a vlan_filtering=0 and vlan_filtering=1 bridge device. |
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*/ |
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bool untag_bridge_pvid; |
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/* Let DSA manage the FDB entries towards the CPU, based on the |
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* software bridge database. |
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*/ |
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bool assisted_learning_on_cpu_port; |
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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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/* MAC PCS does not provide link state change interrupt, and requires |
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* polling. Flag passed on to PHYLINK. |
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*/ |
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bool pcs_poll; |
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/* For switches that only have the MRU configurable. To ensure the |
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* configured MTU is not exceeded, normalization of MRU on all bridged |
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* interfaces is needed. |
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*/ |
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bool mtu_enforcement_ingress; |
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/* Drivers that benefit from having an ID associated with each |
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* offloaded LAG should set this to the maximum number of |
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* supported IDs. DSA will then maintain a mapping of _at |
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* least_ these many IDs, accessible to drivers via |
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* dsa_lag_id(). |
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*/ |
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unsigned int num_lag_ids; |
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size_t num_ports; |
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}; |
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static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) |
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{ |
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struct dsa_switch_tree *dst = ds->dst; |
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struct dsa_port *dp; |
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list_for_each_entry(dp, &dst->ports, list) |
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if (dp->ds == ds && dp->index == p) |
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return dp; |
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return NULL; |
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} |
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static inline bool dsa_port_is_dsa(struct dsa_port *port) |
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{ |
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return port->type == DSA_PORT_TYPE_DSA; |
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} |
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static inline bool dsa_port_is_cpu(struct dsa_port *port) |
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{ |
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return port->type == DSA_PORT_TYPE_CPU; |
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} |
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static inline bool dsa_port_is_user(struct dsa_port *dp) |
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{ |
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return dp->type == DSA_PORT_TYPE_USER; |
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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 device */ |
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static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) |
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{ |
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struct dsa_switch_tree *dst = ds->dst; |
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struct dsa_link *dl; |
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list_for_each_entry(dl, &dst->rtable, list) |
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if (dl->dp->ds == ds && dl->link_dp->ds->index == device) |
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return dl->dp->index; |
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return ds->num_ports; |
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} |
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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 dsa_routing_port(ds, device); |
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} |
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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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|
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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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|
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/* Return true if this is the local port used to reach the CPU port */ |
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static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) |
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{ |
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if (dsa_is_unused_port(ds, port)) |
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return false; |
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|
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return port == dsa_upstream_port(ds, port); |
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} |
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|
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/* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning |
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* that the routing port from @downstream_ds to @upstream_ds is also the port |
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* which @downstream_ds uses to reach its dedicated CPU. |
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*/ |
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static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, |
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struct dsa_switch *downstream_ds) |
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{ |
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int routing_port; |
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|
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if (upstream_ds == downstream_ds) |
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return true; |
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routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); |
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return dsa_is_upstream_port(downstream_ds, routing_port); |
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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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|
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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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|
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static inline |
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struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) |
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{ |
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if (!dp->bridge_dev) |
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return NULL; |
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|
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if (dp->lag_dev) |
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return dp->lag_dev; |
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else if (dp->hsr_dev) |
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return dp->hsr_dev; |
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|
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return dp->slave; |
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} |
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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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/* |
|
* Tagging protocol helpers called for the CPU ports and DSA links. |
|
* @get_tag_protocol retrieves the initial tagging protocol and is |
|
* mandatory. Switches which can operate using multiple tagging |
|
* protocols should implement @change_tag_protocol and report in |
|
* @get_tag_protocol the tagger in current use. |
|
*/ |
|
enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, |
|
int port, |
|
enum dsa_tag_protocol mprot); |
|
int (*change_tag_protocol)(struct dsa_switch *ds, int port, |
|
enum dsa_tag_protocol proto); |
|
|
|
int (*setup)(struct dsa_switch *ds); |
|
void (*teardown)(struct dsa_switch *ds); |
|
u32 (*get_phy_flags)(struct dsa_switch *ds, int port); |
|
|
|
/* |
|
* Access to the switch's PHY registers. |
|
*/ |
|
int (*phy_read)(struct dsa_switch *ds, int port, int regnum); |
|
int (*phy_write)(struct dsa_switch *ds, int port, |
|
int regnum, u16 val); |
|
|
|
/* |
|
* Link state adjustment (called from libphy) |
|
*/ |
|
void (*adjust_link)(struct dsa_switch *ds, int port, |
|
struct phy_device *phydev); |
|
void (*fixed_link_update)(struct dsa_switch *ds, int port, |
|
struct fixed_phy_status *st); |
|
|
|
/* |
|
* PHYLINK integration |
|
*/ |
|
void (*phylink_validate)(struct dsa_switch *ds, int port, |
|
unsigned long *supported, |
|
struct phylink_link_state *state); |
|
int (*phylink_mac_link_state)(struct dsa_switch *ds, int port, |
|
struct phylink_link_state *state); |
|
void (*phylink_mac_config)(struct dsa_switch *ds, int port, |
|
unsigned int mode, |
|
const struct phylink_link_state *state); |
|
void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port); |
|
void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, |
|
unsigned int mode, |
|
phy_interface_t interface); |
|
void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, |
|
unsigned int mode, |
|
phy_interface_t interface, |
|
struct phy_device *phydev, |
|
int speed, int duplex, |
|
bool tx_pause, bool rx_pause); |
|
void (*phylink_fixed_state)(struct dsa_switch *ds, int port, |
|
struct phylink_link_state *state); |
|
/* |
|
* Port statistics counters. |
|
*/ |
|
void (*get_strings)(struct dsa_switch *ds, int port, |
|
u32 stringset, uint8_t *data); |
|
void (*get_ethtool_stats)(struct dsa_switch *ds, |
|
int port, uint64_t *data); |
|
int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); |
|
void (*get_ethtool_phy_stats)(struct dsa_switch *ds, |
|
int port, uint64_t *data); |
|
void (*get_stats64)(struct dsa_switch *ds, int port, |
|
struct rtnl_link_stats64 *s); |
|
void (*self_test)(struct dsa_switch *ds, int port, |
|
struct ethtool_test *etest, u64 *data); |
|
|
|
/* |
|
* ethtool Wake-on-LAN |
|
*/ |
|
void (*get_wol)(struct dsa_switch *ds, int port, |
|
struct ethtool_wolinfo *w); |
|
int (*set_wol)(struct dsa_switch *ds, int port, |
|
struct ethtool_wolinfo *w); |
|
|
|
/* |
|
* ethtool timestamp info |
|
*/ |
|
int (*get_ts_info)(struct dsa_switch *ds, int port, |
|
struct ethtool_ts_info *ts); |
|
|
|
/* |
|
* Suspend and resume |
|
*/ |
|
int (*suspend)(struct dsa_switch *ds); |
|
int (*resume)(struct dsa_switch *ds); |
|
|
|
/* |
|
* Port enable/disable |
|
*/ |
|
int (*port_enable)(struct dsa_switch *ds, int port, |
|
struct phy_device *phy); |
|
void (*port_disable)(struct dsa_switch *ds, int port); |
|
|
|
/* |
|
* Port's MAC EEE settings |
|
*/ |
|
int (*set_mac_eee)(struct dsa_switch *ds, int port, |
|
struct ethtool_eee *e); |
|
int (*get_mac_eee)(struct dsa_switch *ds, int port, |
|
struct ethtool_eee *e); |
|
|
|
/* EEPROM access */ |
|
int (*get_eeprom_len)(struct dsa_switch *ds); |
|
int (*get_eeprom)(struct dsa_switch *ds, |
|
struct ethtool_eeprom *eeprom, u8 *data); |
|
int (*set_eeprom)(struct dsa_switch *ds, |
|
struct ethtool_eeprom *eeprom, u8 *data); |
|
|
|
/* |
|
* Register access. |
|
*/ |
|
int (*get_regs_len)(struct dsa_switch *ds, int port); |
|
void (*get_regs)(struct dsa_switch *ds, int port, |
|
struct ethtool_regs *regs, void *p); |
|
|
|
/* |
|
* Upper device tracking. |
|
*/ |
|
int (*port_prechangeupper)(struct dsa_switch *ds, int port, |
|
struct netdev_notifier_changeupper_info *info); |
|
|
|
/* |
|
* Bridge integration |
|
*/ |
|
int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); |
|
int (*port_bridge_join)(struct dsa_switch *ds, int port, |
|
struct net_device *bridge); |
|
void (*port_bridge_leave)(struct dsa_switch *ds, int port, |
|
struct net_device *bridge); |
|
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_pre_bridge_flags)(struct dsa_switch *ds, int port, |
|
struct switchdev_brport_flags flags, |
|
struct netlink_ext_ack *extack); |
|
int (*port_bridge_flags)(struct dsa_switch *ds, int port, |
|
struct switchdev_brport_flags flags, |
|
struct netlink_ext_ack *extack); |
|
int (*port_set_mrouter)(struct dsa_switch *ds, int port, bool mrouter, |
|
struct netlink_ext_ack *extack); |
|
|
|
/* |
|
* VLAN support |
|
*/ |
|
int (*port_vlan_filtering)(struct dsa_switch *ds, int port, |
|
bool vlan_filtering, |
|
struct netlink_ext_ack *extack); |
|
int (*port_vlan_add)(struct dsa_switch *ds, int port, |
|
const struct switchdev_obj_port_vlan *vlan, |
|
struct netlink_ext_ack *extack); |
|
int (*port_vlan_del)(struct dsa_switch *ds, int port, |
|
const struct switchdev_obj_port_vlan *vlan); |
|
/* |
|
* Forwarding database |
|
*/ |
|
int (*port_fdb_add)(struct dsa_switch *ds, int port, |
|
const unsigned char *addr, u16 vid); |
|
int (*port_fdb_del)(struct dsa_switch *ds, int port, |
|
const unsigned char *addr, u16 vid); |
|
int (*port_fdb_dump)(struct dsa_switch *ds, int port, |
|
dsa_fdb_dump_cb_t *cb, void *data); |
|
|
|
/* |
|
* Multicast database |
|
*/ |
|
int (*port_mdb_add)(struct dsa_switch *ds, int port, |
|
const struct switchdev_obj_port_mdb *mdb); |
|
int (*port_mdb_del)(struct dsa_switch *ds, int port, |
|
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 (*cls_flower_add)(struct dsa_switch *ds, int port, |
|
struct flow_cls_offload *cls, bool ingress); |
|
int (*cls_flower_del)(struct dsa_switch *ds, int port, |
|
struct flow_cls_offload *cls, bool ingress); |
|
int (*cls_flower_stats)(struct dsa_switch *ds, int port, |
|
struct flow_cls_offload *cls, bool ingress); |
|
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_policer_add)(struct dsa_switch *ds, int port, |
|
struct dsa_mall_policer_tc_entry *policer); |
|
void (*port_policer_del)(struct dsa_switch *ds, int port); |
|
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 tree_index, |
|
int sw_index, int port, |
|
struct net_device *br); |
|
void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, |
|
int sw_index, int port, |
|
struct net_device *br); |
|
int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, |
|
int port); |
|
int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, |
|
int port, struct net_device *lag, |
|
struct netdev_lag_upper_info *info); |
|
int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, |
|
int port, struct net_device *lag); |
|
|
|
/* |
|
* 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); |
|
void (*port_txtstamp)(struct dsa_switch *ds, int port, |
|
struct sk_buff *skb); |
|
bool (*port_rxtstamp)(struct dsa_switch *ds, int port, |
|
struct sk_buff *skb, unsigned int type); |
|
|
|
/* Devlink parameters, etc */ |
|
int (*devlink_param_get)(struct dsa_switch *ds, u32 id, |
|
struct devlink_param_gset_ctx *ctx); |
|
int (*devlink_param_set)(struct dsa_switch *ds, u32 id, |
|
struct devlink_param_gset_ctx *ctx); |
|
int (*devlink_info_get)(struct dsa_switch *ds, |
|
struct devlink_info_req *req, |
|
struct netlink_ext_ack *extack); |
|
int (*devlink_sb_pool_get)(struct dsa_switch *ds, |
|
unsigned int sb_index, u16 pool_index, |
|
struct devlink_sb_pool_info *pool_info); |
|
int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, |
|
u16 pool_index, u32 size, |
|
enum devlink_sb_threshold_type threshold_type, |
|
struct netlink_ext_ack *extack); |
|
int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, |
|
unsigned int sb_index, u16 pool_index, |
|
u32 *p_threshold); |
|
int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, |
|
unsigned int sb_index, u16 pool_index, |
|
u32 threshold, |
|
struct netlink_ext_ack *extack); |
|
int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, |
|
unsigned int sb_index, u16 tc_index, |
|
enum devlink_sb_pool_type pool_type, |
|
u16 *p_pool_index, u32 *p_threshold); |
|
int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, |
|
unsigned int sb_index, u16 tc_index, |
|
enum devlink_sb_pool_type pool_type, |
|
u16 pool_index, u32 threshold, |
|
struct netlink_ext_ack *extack); |
|
int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, |
|
unsigned int sb_index); |
|
int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, |
|
unsigned int sb_index); |
|
int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, |
|
unsigned int sb_index, u16 pool_index, |
|
u32 *p_cur, u32 *p_max); |
|
int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, |
|
unsigned int sb_index, u16 tc_index, |
|
enum devlink_sb_pool_type pool_type, |
|
u32 *p_cur, u32 *p_max); |
|
|
|
/* |
|
* MTU change functionality. Switches can also adjust their MRU through |
|
* this method. By MTU, one understands the SDU (L2 payload) length. |
|
* If the switch needs to account for the DSA tag on the CPU port, this |
|
* method needs to do so privately. |
|
*/ |
|
int (*port_change_mtu)(struct dsa_switch *ds, int port, |
|
int new_mtu); |
|
int (*port_max_mtu)(struct dsa_switch *ds, int port); |
|
|
|
/* |
|
* LAG integration |
|
*/ |
|
int (*port_lag_change)(struct dsa_switch *ds, int port); |
|
int (*port_lag_join)(struct dsa_switch *ds, int port, |
|
struct net_device *lag, |
|
struct netdev_lag_upper_info *info); |
|
int (*port_lag_leave)(struct dsa_switch *ds, int port, |
|
struct net_device *lag); |
|
|
|
/* |
|
* HSR integration |
|
*/ |
|
int (*port_hsr_join)(struct dsa_switch *ds, int port, |
|
struct net_device *hsr); |
|
int (*port_hsr_leave)(struct dsa_switch *ds, int port, |
|
struct net_device *hsr); |
|
|
|
/* |
|
* MRP integration |
|
*/ |
|
int (*port_mrp_add)(struct dsa_switch *ds, int port, |
|
const struct switchdev_obj_mrp *mrp); |
|
int (*port_mrp_del)(struct dsa_switch *ds, int port, |
|
const struct switchdev_obj_mrp *mrp); |
|
int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, |
|
const struct switchdev_obj_ring_role_mrp *mrp); |
|
int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, |
|
const struct switchdev_obj_ring_role_mrp *mrp); |
|
}; |
|
|
|
#define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ |
|
DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ |
|
dsa_devlink_param_get, dsa_devlink_param_set, NULL) |
|
|
|
int dsa_devlink_param_get(struct devlink *dl, u32 id, |
|
struct devlink_param_gset_ctx *ctx); |
|
int dsa_devlink_param_set(struct devlink *dl, u32 id, |
|
struct devlink_param_gset_ctx *ctx); |
|
int dsa_devlink_params_register(struct dsa_switch *ds, |
|
const struct devlink_param *params, |
|
size_t params_count); |
|
void dsa_devlink_params_unregister(struct dsa_switch *ds, |
|
const struct devlink_param *params, |
|
size_t params_count); |
|
int dsa_devlink_resource_register(struct dsa_switch *ds, |
|
const char *resource_name, |
|
u64 resource_size, |
|
u64 resource_id, |
|
u64 parent_resource_id, |
|
const struct devlink_resource_size_params *size_params); |
|
|
|
void dsa_devlink_resources_unregister(struct dsa_switch *ds); |
|
|
|
void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, |
|
u64 resource_id, |
|
devlink_resource_occ_get_t *occ_get, |
|
void *occ_get_priv); |
|
void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, |
|
u64 resource_id); |
|
struct devlink_region * |
|
dsa_devlink_region_create(struct dsa_switch *ds, |
|
const struct devlink_region_ops *ops, |
|
u32 region_max_snapshots, u64 region_size); |
|
struct devlink_region * |
|
dsa_devlink_port_region_create(struct dsa_switch *ds, |
|
int port, |
|
const struct devlink_port_region_ops *ops, |
|
u32 region_max_snapshots, u64 region_size); |
|
void dsa_devlink_region_destroy(struct devlink_region *region); |
|
|
|
struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); |
|
|
|
struct dsa_devlink_priv { |
|
struct dsa_switch *ds; |
|
}; |
|
|
|
static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) |
|
{ |
|
struct dsa_devlink_priv *dl_priv = devlink_priv(dl); |
|
|
|
return dl_priv->ds; |
|
} |
|
|
|
static inline |
|
struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) |
|
{ |
|
struct devlink *dl = port->devlink; |
|
struct dsa_devlink_priv *dl_priv = devlink_priv(dl); |
|
|
|
return dl_priv->ds; |
|
} |
|
|
|
static inline int dsa_devlink_port_to_port(struct devlink_port *port) |
|
{ |
|
return port->index; |
|
} |
|
|
|
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(const 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; |
|
} |
|
|
|
/* All DSA tags that push the EtherType to the right (basically all except tail |
|
* tags, which don't break dissection) can be treated the same from the |
|
* perspective of the flow dissector. |
|
* |
|
* We need to return: |
|
* - offset: the (B - A) difference between: |
|
* A. the position of the real EtherType and |
|
* B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes |
|
* after the normal EtherType was supposed to be) |
|
* The offset in bytes is exactly equal to the tagger overhead (and half of |
|
* that, in __be16 shorts). |
|
* |
|
* - proto: the value of the real EtherType. |
|
*/ |
|
static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, |
|
__be16 *proto, int *offset) |
|
{ |
|
#if IS_ENABLED(CONFIG_NET_DSA) |
|
const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; |
|
int tag_len = ops->needed_headroom; |
|
|
|
*offset = tag_len; |
|
*proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; |
|
#endif |
|
} |
|
|
|
#if IS_ENABLED(CONFIG_NET_DSA) |
|
static inline int __dsa_netdevice_ops_check(struct net_device *dev) |
|
{ |
|
int err = -EOPNOTSUPP; |
|
|
|
if (!dev->dsa_ptr) |
|
return err; |
|
|
|
if (!dev->dsa_ptr->netdev_ops) |
|
return err; |
|
|
|
return 0; |
|
} |
|
|
|
static inline int dsa_ndo_do_ioctl(struct net_device *dev, struct ifreq *ifr, |
|
int cmd) |
|
{ |
|
const struct dsa_netdevice_ops *ops; |
|
int err; |
|
|
|
err = __dsa_netdevice_ops_check(dev); |
|
if (err) |
|
return err; |
|
|
|
ops = dev->dsa_ptr->netdev_ops; |
|
|
|
return ops->ndo_do_ioctl(dev, ifr, cmd); |
|
} |
|
#else |
|
static inline int dsa_ndo_do_ioctl(struct net_device *dev, struct ifreq *ifr, |
|
int cmd) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
#endif |
|
|
|
void dsa_unregister_switch(struct dsa_switch *ds); |
|
int dsa_register_switch(struct dsa_switch *ds); |
|
struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); |
|
#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 */ |
|
|
|
#if IS_ENABLED(CONFIG_NET_DSA) |
|
bool dsa_slave_dev_check(const struct net_device *dev); |
|
#else |
|
static inline bool dsa_slave_dev_check(const struct net_device *dev) |
|
{ |
|
return false; |
|
} |
|
#endif |
|
|
|
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; |
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struct module *owner; |
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}; |
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|
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void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[], |
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unsigned int count, |
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struct module *owner); |
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void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[], |
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unsigned int count); |
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|
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#define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \ |
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static int __init dsa_tag_driver_module_init(void) \ |
|
{ \ |
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dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \ |
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THIS_MODULE); \ |
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return 0; \ |
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} \ |
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module_init(dsa_tag_driver_module_init); \ |
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\ |
|
static void __exit dsa_tag_driver_module_exit(void) \ |
|
{ \ |
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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 |
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|
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