diff options
Diffstat (limited to 'drivers/net/ethernet/marvell/prestera/prestera_router_hw.c')
| -rw-r--r-- | drivers/net/ethernet/marvell/prestera/prestera_router_hw.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c new file mode 100644 index 000000000000..5866a4be50f5 --- /dev/null +++ b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c @@ -0,0 +1,208 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/* Copyright (c) 2019-2021 Marvell International Ltd. All rights reserved */ + +#include <linux/rhashtable.h> + +#include "prestera.h" +#include "prestera_hw.h" +#include "prestera_router_hw.h" +#include "prestera_acl.h" + +/* +--+ + * +------->|vr| + * | +--+ + * | + * +-+-------+ + * |rif_entry| + * +---------+ + * Rif is + * used as + * entry point + * for vr in hw + */ + +int prestera_router_hw_init(struct prestera_switch *sw) +{ + INIT_LIST_HEAD(&sw->router->vr_list); + INIT_LIST_HEAD(&sw->router->rif_entry_list); + + return 0; +} + +static struct prestera_vr *__prestera_vr_find(struct prestera_switch *sw, + u32 tb_id) +{ + struct prestera_vr *vr; + + list_for_each_entry(vr, &sw->router->vr_list, router_node) { + if (vr->tb_id == tb_id) + return vr; + } + + return NULL; +} + +static struct prestera_vr *__prestera_vr_create(struct prestera_switch *sw, + u32 tb_id, + struct netlink_ext_ack *extack) +{ + struct prestera_vr *vr; + u16 hw_vr_id; + int err; + + err = prestera_hw_vr_create(sw, &hw_vr_id); + if (err) + return ERR_PTR(-ENOMEM); + + vr = kzalloc(sizeof(*vr), GFP_KERNEL); + if (!vr) { + err = -ENOMEM; + goto err_alloc_vr; + } + + vr->tb_id = tb_id; + vr->hw_vr_id = hw_vr_id; + + list_add(&vr->router_node, &sw->router->vr_list); + + return vr; + +err_alloc_vr: + prestera_hw_vr_delete(sw, hw_vr_id); + kfree(vr); + return ERR_PTR(err); +} + +static void __prestera_vr_destroy(struct prestera_switch *sw, + struct prestera_vr *vr) +{ + prestera_hw_vr_delete(sw, vr->hw_vr_id); + list_del(&vr->router_node); + kfree(vr); +} + +static struct prestera_vr *prestera_vr_get(struct prestera_switch *sw, u32 tb_id, + struct netlink_ext_ack *extack) +{ + struct prestera_vr *vr; + + vr = __prestera_vr_find(sw, tb_id); + if (!vr) + vr = __prestera_vr_create(sw, tb_id, extack); + if (IS_ERR(vr)) + return ERR_CAST(vr); + + return vr; +} + +static void prestera_vr_put(struct prestera_switch *sw, struct prestera_vr *vr) +{ + if (!vr->ref_cnt) + __prestera_vr_destroy(sw, vr); +} + +/* iface is overhead struct. vr_id also can be removed. */ +static int +__prestera_rif_entry_key_copy(const struct prestera_rif_entry_key *in, + struct prestera_rif_entry_key *out) +{ + memset(out, 0, sizeof(*out)); + + switch (in->iface.type) { + case PRESTERA_IF_PORT_E: + out->iface.dev_port.hw_dev_num = in->iface.dev_port.hw_dev_num; + out->iface.dev_port.port_num = in->iface.dev_port.port_num; + break; + case PRESTERA_IF_LAG_E: + out->iface.lag_id = in->iface.lag_id; + break; + case PRESTERA_IF_VID_E: + out->iface.vlan_id = in->iface.vlan_id; + break; + default: + pr_err("Unsupported iface type"); + return -EINVAL; + } + + out->iface.type = in->iface.type; + return 0; +} + +struct prestera_rif_entry * +prestera_rif_entry_find(const struct prestera_switch *sw, + const struct prestera_rif_entry_key *k) +{ + struct prestera_rif_entry *rif_entry; + struct prestera_rif_entry_key lk; /* lookup key */ + + if (__prestera_rif_entry_key_copy(k, &lk)) + return NULL; + + list_for_each_entry(rif_entry, &sw->router->rif_entry_list, + router_node) { + if (!memcmp(k, &rif_entry->key, sizeof(*k))) + return rif_entry; + } + + return NULL; +} + +void prestera_rif_entry_destroy(struct prestera_switch *sw, + struct prestera_rif_entry *e) +{ + struct prestera_iface iface; + + list_del(&e->router_node); + + memcpy(&iface, &e->key.iface, sizeof(iface)); + iface.vr_id = e->vr->hw_vr_id; + prestera_hw_rif_delete(sw, e->hw_id, &iface); + + e->vr->ref_cnt--; + prestera_vr_put(sw, e->vr); + kfree(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) +{ + int err; + struct prestera_rif_entry *e; + struct prestera_iface iface; + + e = kzalloc(sizeof(*e), GFP_KERNEL); + if (!e) + goto err_kzalloc; + + if (__prestera_rif_entry_key_copy(k, &e->key)) + goto err_key_copy; + + e->vr = prestera_vr_get(sw, tb_id, NULL); + if (IS_ERR(e->vr)) + goto err_vr_get; + + e->vr->ref_cnt++; + memcpy(&e->addr, addr, sizeof(e->addr)); + + /* HW */ + memcpy(&iface, &e->key.iface, sizeof(iface)); + iface.vr_id = e->vr->hw_vr_id; + err = prestera_hw_rif_create(sw, &iface, e->addr, &e->hw_id); + if (err) + goto err_hw_create; + + list_add(&e->router_node, &sw->router->rif_entry_list); + + return e; + +err_hw_create: + e->vr->ref_cnt--; + prestera_vr_put(sw, e->vr); +err_vr_get: +err_key_copy: + kfree(e); +err_kzalloc: + return NULL; +} |