diff options
Diffstat (limited to 'drivers/net/ethernet/marvell/prestera/prestera_router_hw.h')
| -rw-r--r-- | drivers/net/ethernet/marvell/prestera/prestera_router_hw.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_router_hw.h b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.h new file mode 100644 index 000000000..9ca97919c --- /dev/null +++ b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.h @@ -0,0 +1,155 @@ +/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ +/* Copyright (c) 2019-2021 Marvell International Ltd. All rights reserved. */ + +#ifndef _PRESTERA_ROUTER_HW_H_ +#define _PRESTERA_ROUTER_HW_H_ + +struct prestera_vr { + struct list_head router_node; + refcount_t refcount; + u32 tb_id; /* key (kernel fib table id) */ + u16 hw_vr_id; /* virtual router ID */ + u8 __pad[2]; +}; + +struct prestera_rif_entry { + struct prestera_rif_entry_key { + struct prestera_iface iface; + } key; + struct prestera_vr *vr; + unsigned char addr[ETH_ALEN]; + u16 hw_id; /* rif_id */ + struct list_head router_node; /* ht */ +}; + +struct prestera_ip_addr { + union { + __be32 ipv4; + struct in6_addr ipv6; + } u; + enum { + PRESTERA_IPV4 = 0, + PRESTERA_IPV6 + } v; +#define PRESTERA_IP_ADDR_PLEN(V) ((V) == PRESTERA_IPV4 ? 32 : \ + /* (V) == PRESTERA_IPV6 ? */ 128 /* : 0 */) +}; + +struct prestera_nh_neigh_key { + struct prestera_ip_addr addr; + /* Seems like rif is obsolete, because there is iface in info ? + * Key can contain functional fields, or fields, which is used to + * filter duplicate objects on logical level (before you pass it to + * HW)... also key can be used to cover hardware restrictions. + * In our case rif - is logical interface (even can be VLAN), which + * is used in combination with IP address (which is also not related to + * hardware nexthop) to provide logical compression of created nexthops. + * You even can imagine, that rif+IPaddr is just cookie. + */ + /* struct prestera_rif *rif; */ + /* Use just as cookie, to divide ARP domains (in order with addr) */ + void *rif; +}; + +/* Used for hw call */ +struct prestera_neigh_info { + struct prestera_iface iface; + unsigned char ha[ETH_ALEN]; + u8 connected; /* bool. indicate, if mac/oif valid */ + u8 __pad[1]; +}; + +/* Used to notify nh about neigh change */ +struct prestera_nh_neigh { + struct prestera_nh_neigh_key key; + struct prestera_neigh_info info; + struct rhash_head ht_node; /* node of prestera_vr */ + struct list_head nexthop_group_list; +}; + +#define PRESTERA_NHGR_SIZE_MAX 4 + +struct prestera_nexthop_group { + struct prestera_nexthop_group_key { + struct prestera_nh_neigh_key neigh[PRESTERA_NHGR_SIZE_MAX]; + } key; + /* Store intermediate object here. + * This prevent overhead kzalloc call. + */ + /* nh_neigh is used only to notify nexthop_group */ + struct prestera_nh_neigh_head { + struct prestera_nexthop_group *this; + struct list_head head; + /* ptr to neigh is not necessary. + * It used to prevent lookup of nh_neigh by key (n) on destroy + */ + struct prestera_nh_neigh *neigh; + } nh_neigh_head[PRESTERA_NHGR_SIZE_MAX]; + struct rhash_head ht_node; /* node of prestera_vr */ + refcount_t refcount; + u32 grp_id; /* hw */ +}; + +struct prestera_fib_key { + struct prestera_ip_addr addr; + u32 prefix_len; + u32 tb_id; +}; + +struct prestera_fib_info { + struct prestera_vr *vr; + struct list_head vr_node; + enum prestera_fib_type { + PRESTERA_FIB_TYPE_INVALID = 0, + /* must be pointer to nh_grp id */ + PRESTERA_FIB_TYPE_UC_NH, + /* It can be connected route + * and will be overlapped with neighbours + */ + PRESTERA_FIB_TYPE_TRAP, + PRESTERA_FIB_TYPE_DROP + } type; + /* Valid only if type = UC_NH*/ + struct prestera_nexthop_group *nh_grp; +}; + +struct prestera_fib_node { + struct rhash_head ht_node; /* node of prestera_vr */ + struct prestera_fib_key key; + struct prestera_fib_info info; /* action related info */ +}; + +struct prestera_rif_entry * +prestera_rif_entry_find(const struct prestera_switch *sw, + const struct prestera_rif_entry_key *k); +void prestera_rif_entry_destroy(struct prestera_switch *sw, + struct prestera_rif_entry *e); +struct prestera_rif_entry * +prestera_rif_entry_create(struct prestera_switch *sw, + struct prestera_rif_entry_key *k, + u32 tb_id, const unsigned char *addr); +struct prestera_nh_neigh * +prestera_nh_neigh_find(struct prestera_switch *sw, + struct prestera_nh_neigh_key *key); +struct prestera_nh_neigh * +prestera_nh_neigh_get(struct prestera_switch *sw, + struct prestera_nh_neigh_key *key); +void prestera_nh_neigh_put(struct prestera_switch *sw, + struct prestera_nh_neigh *neigh); +int prestera_nh_neigh_set(struct prestera_switch *sw, + struct prestera_nh_neigh *neigh); +bool prestera_nh_neigh_util_hw_state(struct prestera_switch *sw, + struct prestera_nh_neigh *nh_neigh); +struct prestera_fib_node *prestera_fib_node_find(struct prestera_switch *sw, + struct prestera_fib_key *key); +void prestera_fib_node_destroy(struct prestera_switch *sw, + struct prestera_fib_node *fib_node); +struct prestera_fib_node * +prestera_fib_node_create(struct prestera_switch *sw, + struct prestera_fib_key *key, + enum prestera_fib_type fib_type, + struct prestera_nexthop_group_key *nh_grp_key); +int prestera_router_hw_init(struct prestera_switch *sw); +void prestera_router_hw_fini(struct prestera_switch *sw); + +#endif /* _PRESTERA_ROUTER_HW_H_ */ |