Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Jiri Pirko | 7122 | 91.81% | 53 | 67.09% |
Nir Dotan | 326 | 4.20% | 3 | 3.80% |
Ido Schimmel | 186 | 2.40% | 15 | 18.99% |
Arkadi Sharshevsky | 75 | 0.97% | 1 | 1.27% |
Yotam Gigi | 26 | 0.34% | 1 | 1.27% |
Christophe Jaillet | 8 | 0.10% | 1 | 1.27% |
Or Gerlitz | 6 | 0.08% | 2 | 2.53% |
Petr Machata | 4 | 0.05% | 1 | 1.27% |
Nogah Frankel | 2 | 0.03% | 1 | 1.27% |
Gustavo A. R. Silva | 2 | 0.03% | 1 | 1.27% |
Total | 7757 | 79 |
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/errno.h> #include <linux/bitops.h> #include <linux/list.h> #include <linux/rhashtable.h> #include <linux/netdevice.h> #include <linux/mutex.h> #include <trace/events/mlxsw.h> #include "reg.h" #include "core.h" #include "resources.h" #include "spectrum.h" #include "spectrum_acl_tcam.h" #include "core_acl_flex_keys.h" size_t mlxsw_sp_acl_tcam_priv_size(struct mlxsw_sp *mlxsw_sp) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; return ops->priv_size; } #define MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_DFLT 5000 /* ms */ #define MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN 3000 /* ms */ #define MLXSW_SP_ACL_TCAM_VREGION_REHASH_CREDITS 100 /* number of entries */ int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam *tcam) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; u64 max_tcam_regions; u64 max_regions; u64 max_groups; int err; mutex_init(&tcam->lock); tcam->vregion_rehash_intrvl = MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_DFLT; INIT_LIST_HEAD(&tcam->vregion_list); max_tcam_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_TCAM_REGIONS); max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS); /* Use 1:1 mapping between ACL region and TCAM region */ if (max_tcam_regions < max_regions) max_regions = max_tcam_regions; tcam->used_regions = bitmap_zalloc(max_regions, GFP_KERNEL); if (!tcam->used_regions) return -ENOMEM; tcam->max_regions = max_regions; max_groups = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUPS); tcam->used_groups = bitmap_zalloc(max_groups, GFP_KERNEL); if (!tcam->used_groups) { err = -ENOMEM; goto err_alloc_used_groups; } tcam->max_groups = max_groups; tcam->max_group_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUP_SIZE); err = ops->init(mlxsw_sp, tcam->priv, tcam); if (err) goto err_tcam_init; return 0; err_tcam_init: bitmap_free(tcam->used_groups); err_alloc_used_groups: bitmap_free(tcam->used_regions); return err; } void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam *tcam) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; mutex_destroy(&tcam->lock); ops->fini(mlxsw_sp, tcam->priv); bitmap_free(tcam->used_groups); bitmap_free(tcam->used_regions); } int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_rule_info *rulei, u32 *priority, bool fillup_priority) { u64 max_priority; if (!fillup_priority) { *priority = 0; return 0; } if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, KVD_SIZE)) return -EIO; /* Priority range is 1..cap_kvd_size-1. */ max_priority = MLXSW_CORE_RES_GET(mlxsw_sp->core, KVD_SIZE) - 1; if (rulei->priority >= max_priority) return -EINVAL; /* Unlike in TC, in HW, higher number means higher priority. */ *priority = max_priority - rulei->priority; return 0; } static int mlxsw_sp_acl_tcam_region_id_get(struct mlxsw_sp_acl_tcam *tcam, u16 *p_id) { u16 id; id = find_first_zero_bit(tcam->used_regions, tcam->max_regions); if (id < tcam->max_regions) { __set_bit(id, tcam->used_regions); *p_id = id; return 0; } return -ENOBUFS; } static void mlxsw_sp_acl_tcam_region_id_put(struct mlxsw_sp_acl_tcam *tcam, u16 id) { __clear_bit(id, tcam->used_regions); } static int mlxsw_sp_acl_tcam_group_id_get(struct mlxsw_sp_acl_tcam *tcam, u16 *p_id) { u16 id; id = find_first_zero_bit(tcam->used_groups, tcam->max_groups); if (id < tcam->max_groups) { __set_bit(id, tcam->used_groups); *p_id = id; return 0; } return -ENOBUFS; } static void mlxsw_sp_acl_tcam_group_id_put(struct mlxsw_sp_acl_tcam *tcam, u16 id) { __clear_bit(id, tcam->used_groups); } struct mlxsw_sp_acl_tcam_pattern { const enum mlxsw_afk_element *elements; unsigned int elements_count; }; struct mlxsw_sp_acl_tcam_group { struct mlxsw_sp_acl_tcam *tcam; u16 id; struct mutex lock; /* guards region list updates */ struct list_head region_list; unsigned int region_count; }; struct mlxsw_sp_acl_tcam_vgroup { struct mlxsw_sp_acl_tcam_group group; struct list_head vregion_list; struct rhashtable vchunk_ht; const struct mlxsw_sp_acl_tcam_pattern *patterns; unsigned int patterns_count; bool tmplt_elusage_set; struct mlxsw_afk_element_usage tmplt_elusage; bool vregion_rehash_enabled; unsigned int *p_min_prio; unsigned int *p_max_prio; }; struct mlxsw_sp_acl_tcam_rehash_ctx { void *hints_priv; bool this_is_rollback; struct mlxsw_sp_acl_tcam_vchunk *current_vchunk; /* vchunk being * currently migrated. */ struct mlxsw_sp_acl_tcam_ventry *start_ventry; /* ventry to start * migration from in * a vchunk being * currently migrated. */ struct mlxsw_sp_acl_tcam_ventry *stop_ventry; /* ventry to stop * migration at * a vchunk being * currently migrated. */ }; struct mlxsw_sp_acl_tcam_vregion { struct mutex lock; /* Protects consistency of region, region2 pointers * and vchunk_list. */ struct mlxsw_sp_acl_tcam_region *region; struct mlxsw_sp_acl_tcam_region *region2; /* Used during migration */ struct list_head list; /* Member of a TCAM group */ struct list_head tlist; /* Member of a TCAM */ struct list_head vchunk_list; /* List of vchunks under this vregion */ struct mlxsw_afk_key_info *key_info; struct mlxsw_sp_acl_tcam *tcam; struct mlxsw_sp_acl_tcam_vgroup *vgroup; struct { struct delayed_work dw; struct mlxsw_sp_acl_tcam_rehash_ctx ctx; } rehash; struct mlxsw_sp *mlxsw_sp; unsigned int ref_count; }; struct mlxsw_sp_acl_tcam_vchunk; struct mlxsw_sp_acl_tcam_chunk { struct mlxsw_sp_acl_tcam_vchunk *vchunk; struct mlxsw_sp_acl_tcam_region *region; unsigned long priv[]; /* priv has to be always the last item */ }; struct mlxsw_sp_acl_tcam_vchunk { struct mlxsw_sp_acl_tcam_chunk *chunk; struct mlxsw_sp_acl_tcam_chunk *chunk2; /* Used during migration */ struct list_head list; /* Member of a TCAM vregion */ struct rhash_head ht_node; /* Member of a chunk HT */ struct list_head ventry_list; unsigned int priority; /* Priority within the vregion and group */ struct mlxsw_sp_acl_tcam_vgroup *vgroup; struct mlxsw_sp_acl_tcam_vregion *vregion; unsigned int ref_count; }; struct mlxsw_sp_acl_tcam_entry { struct mlxsw_sp_acl_tcam_ventry *ventry; struct mlxsw_sp_acl_tcam_chunk *chunk; unsigned long priv[]; /* priv has to be always the last item */ }; struct mlxsw_sp_acl_tcam_ventry { struct mlxsw_sp_acl_tcam_entry *entry; struct list_head list; /* Member of a TCAM vchunk */ struct mlxsw_sp_acl_tcam_vchunk *vchunk; struct mlxsw_sp_acl_rule_info *rulei; }; static const struct rhashtable_params mlxsw_sp_acl_tcam_vchunk_ht_params = { .key_len = sizeof(unsigned int), .key_offset = offsetof(struct mlxsw_sp_acl_tcam_vchunk, priority), .head_offset = offsetof(struct mlxsw_sp_acl_tcam_vchunk, ht_node), .automatic_shrinking = true, }; static int mlxsw_sp_acl_tcam_group_update(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_group *group) { struct mlxsw_sp_acl_tcam_region *region; char pagt_pl[MLXSW_REG_PAGT_LEN]; int acl_index = 0; mlxsw_reg_pagt_pack(pagt_pl, group->id); list_for_each_entry(region, &group->region_list, list) { bool multi = false; /* Check if the next entry in the list has the same vregion. */ if (region->list.next != &group->region_list && list_next_entry(region, list)->vregion == region->vregion) multi = true; mlxsw_reg_pagt_acl_id_pack(pagt_pl, acl_index++, region->id, multi); } mlxsw_reg_pagt_size_set(pagt_pl, acl_index); return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pagt), pagt_pl); } static int mlxsw_sp_acl_tcam_group_add(struct mlxsw_sp_acl_tcam *tcam, struct mlxsw_sp_acl_tcam_group *group) { int err; group->tcam = tcam; INIT_LIST_HEAD(&group->region_list); err = mlxsw_sp_acl_tcam_group_id_get(tcam, &group->id); if (err) return err; mutex_init(&group->lock); return 0; } static void mlxsw_sp_acl_tcam_group_del(struct mlxsw_sp_acl_tcam_group *group) { struct mlxsw_sp_acl_tcam *tcam = group->tcam; mutex_destroy(&group->lock); mlxsw_sp_acl_tcam_group_id_put(tcam, group->id); WARN_ON(!list_empty(&group->region_list)); } static int mlxsw_sp_acl_tcam_vgroup_add(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam *tcam, struct mlxsw_sp_acl_tcam_vgroup *vgroup, const struct mlxsw_sp_acl_tcam_pattern *patterns, unsigned int patterns_count, struct mlxsw_afk_element_usage *tmplt_elusage, bool vregion_rehash_enabled, unsigned int *p_min_prio, unsigned int *p_max_prio) { int err; vgroup->patterns = patterns; vgroup->patterns_count = patterns_count; vgroup->vregion_rehash_enabled = vregion_rehash_enabled; vgroup->p_min_prio = p_min_prio; vgroup->p_max_prio = p_max_prio; if (tmplt_elusage) { vgroup->tmplt_elusage_set = true; memcpy(&vgroup->tmplt_elusage, tmplt_elusage, sizeof(vgroup->tmplt_elusage)); } INIT_LIST_HEAD(&vgroup->vregion_list); err = mlxsw_sp_acl_tcam_group_add(tcam, &vgroup->group); if (err) return err; err = rhashtable_init(&vgroup->vchunk_ht, &mlxsw_sp_acl_tcam_vchunk_ht_params); if (err) goto err_rhashtable_init; return 0; err_rhashtable_init: mlxsw_sp_acl_tcam_group_del(&vgroup->group); return err; } static void mlxsw_sp_acl_tcam_vgroup_del(struct mlxsw_sp_acl_tcam_vgroup *vgroup) { rhashtable_destroy(&vgroup->vchunk_ht); mlxsw_sp_acl_tcam_group_del(&vgroup->group); WARN_ON(!list_empty(&vgroup->vregion_list)); } static int mlxsw_sp_acl_tcam_group_bind(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_group *group, struct mlxsw_sp_port *mlxsw_sp_port, bool ingress) { char ppbt_pl[MLXSW_REG_PPBT_LEN]; mlxsw_reg_ppbt_pack(ppbt_pl, ingress ? MLXSW_REG_PXBT_E_IACL : MLXSW_REG_PXBT_E_EACL, MLXSW_REG_PXBT_OP_BIND, mlxsw_sp_port->local_port, group->id); return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppbt), ppbt_pl); } static void mlxsw_sp_acl_tcam_group_unbind(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_group *group, struct mlxsw_sp_port *mlxsw_sp_port, bool ingress) { char ppbt_pl[MLXSW_REG_PPBT_LEN]; mlxsw_reg_ppbt_pack(ppbt_pl, ingress ? MLXSW_REG_PXBT_E_IACL : MLXSW_REG_PXBT_E_EACL, MLXSW_REG_PXBT_OP_UNBIND, mlxsw_sp_port->local_port, group->id); mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppbt), ppbt_pl); } static u16 mlxsw_sp_acl_tcam_group_id(struct mlxsw_sp_acl_tcam_group *group) { return group->id; } static unsigned int mlxsw_sp_acl_tcam_vregion_prio(struct mlxsw_sp_acl_tcam_vregion *vregion) { struct mlxsw_sp_acl_tcam_vchunk *vchunk; if (list_empty(&vregion->vchunk_list)) return 0; /* As a priority of a vregion, return priority of the first vchunk */ vchunk = list_first_entry(&vregion->vchunk_list, typeof(*vchunk), list); return vchunk->priority; } static unsigned int mlxsw_sp_acl_tcam_vregion_max_prio(struct mlxsw_sp_acl_tcam_vregion *vregion) { struct mlxsw_sp_acl_tcam_vchunk *vchunk; if (list_empty(&vregion->vchunk_list)) return 0; vchunk = list_last_entry(&vregion->vchunk_list, typeof(*vchunk), list); return vchunk->priority; } static void mlxsw_sp_acl_tcam_vgroup_prio_update(struct mlxsw_sp_acl_tcam_vgroup *vgroup) { struct mlxsw_sp_acl_tcam_vregion *vregion; if (list_empty(&vgroup->vregion_list)) return; vregion = list_first_entry(&vgroup->vregion_list, typeof(*vregion), list); *vgroup->p_min_prio = mlxsw_sp_acl_tcam_vregion_prio(vregion); vregion = list_last_entry(&vgroup->vregion_list, typeof(*vregion), list); *vgroup->p_max_prio = mlxsw_sp_acl_tcam_vregion_max_prio(vregion); } static int mlxsw_sp_acl_tcam_group_region_attach(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_group *group, struct mlxsw_sp_acl_tcam_region *region, unsigned int priority, struct mlxsw_sp_acl_tcam_region *next_region) { struct mlxsw_sp_acl_tcam_region *region2; struct list_head *pos; int err; mutex_lock(&group->lock); if (group->region_count == group->tcam->max_group_size) { err = -ENOBUFS; goto err_region_count_check; } if (next_region) { /* If the next region is defined, place the new one * before it. The next one is a sibling. */ pos = &next_region->list; } else { /* Position the region inside the list according to priority */ list_for_each(pos, &group->region_list) { region2 = list_entry(pos, typeof(*region2), list); if (mlxsw_sp_acl_tcam_vregion_prio(region2->vregion) > priority) break; } } list_add_tail(®ion->list, pos); region->group = group; err = mlxsw_sp_acl_tcam_group_update(mlxsw_sp, group); if (err) goto err_group_update; group->region_count++; mutex_unlock(&group->lock); return 0; err_group_update: list_del(®ion->list); err_region_count_check: mutex_unlock(&group->lock); return err; } static void mlxsw_sp_acl_tcam_group_region_detach(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_region *region) { struct mlxsw_sp_acl_tcam_group *group = region->group; mutex_lock(&group->lock); list_del(®ion->list); group->region_count--; mlxsw_sp_acl_tcam_group_update(mlxsw_sp, group); mutex_unlock(&group->lock); } static int mlxsw_sp_acl_tcam_vgroup_vregion_attach(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vgroup *vgroup, struct mlxsw_sp_acl_tcam_vregion *vregion, unsigned int priority) { struct mlxsw_sp_acl_tcam_vregion *vregion2; struct list_head *pos; int err; /* Position the vregion inside the list according to priority */ list_for_each(pos, &vgroup->vregion_list) { vregion2 = list_entry(pos, typeof(*vregion2), list); if (mlxsw_sp_acl_tcam_vregion_prio(vregion2) > priority) break; } list_add_tail(&vregion->list, pos); err = mlxsw_sp_acl_tcam_group_region_attach(mlxsw_sp, &vgroup->group, vregion->region, priority, NULL); if (err) goto err_region_attach; return 0; err_region_attach: list_del(&vregion->list); return err; } static void mlxsw_sp_acl_tcam_vgroup_vregion_detach(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vregion *vregion) { list_del(&vregion->list); if (vregion->region2) mlxsw_sp_acl_tcam_group_region_detach(mlxsw_sp, vregion->region2); mlxsw_sp_acl_tcam_group_region_detach(mlxsw_sp, vregion->region); } static struct mlxsw_sp_acl_tcam_vregion * mlxsw_sp_acl_tcam_vgroup_vregion_find(struct mlxsw_sp_acl_tcam_vgroup *vgroup, unsigned int priority, struct mlxsw_afk_element_usage *elusage, bool *p_need_split) { struct mlxsw_sp_acl_tcam_vregion *vregion, *vregion2; struct list_head *pos; bool issubset; list_for_each(pos, &vgroup->vregion_list) { vregion = list_entry(pos, typeof(*vregion), list); /* First, check if the requested priority does not rather belong * under some of the next vregions. */ if (pos->next != &vgroup->vregion_list) { /* not last */ vregion2 = list_entry(pos->next, typeof(*vregion2), list); if (priority >= mlxsw_sp_acl_tcam_vregion_prio(vregion2)) continue; } issubset = mlxsw_afk_key_info_subset(vregion->key_info, elusage); /* If requested element usage would not fit and the priority * is lower than the currently inspected vregion we cannot * use this region, so return NULL to indicate new vregion has * to be created. */ if (!issubset && priority < mlxsw_sp_acl_tcam_vregion_prio(vregion)) return NULL; /* If requested element usage would not fit and the priority * is higher than the currently inspected vregion we cannot * use this vregion. There is still some hope that the next * vregion would be the fit. So let it be processed and * eventually break at the check right above this. */ if (!issubset && priority > mlxsw_sp_acl_tcam_vregion_max_prio(vregion)) continue; /* Indicate if the vregion needs to be split in order to add * the requested priority. Split is needed when requested * element usage won't fit into the found vregion. */ *p_need_split = !issubset; return vregion; } return NULL; /* New vregion has to be created. */ } static void mlxsw_sp_acl_tcam_vgroup_use_patterns(struct mlxsw_sp_acl_tcam_vgroup *vgroup, struct mlxsw_afk_element_usage *elusage, struct mlxsw_afk_element_usage *out) { const struct mlxsw_sp_acl_tcam_pattern *pattern; int i; /* In case the template is set, we don't have to look up the pattern * and just use the template. */ if (vgroup->tmplt_elusage_set) { memcpy(out, &vgroup->tmplt_elusage, sizeof(*out)); WARN_ON(!mlxsw_afk_element_usage_subset(elusage, out)); return; } for (i = 0; i < vgroup->patterns_count; i++) { pattern = &vgroup->patterns[i]; mlxsw_afk_element_usage_fill(out, pattern->elements, pattern->elements_count); if (mlxsw_afk_element_usage_subset(elusage, out)) return; } memcpy(out, elusage, sizeof(*out)); } static int mlxsw_sp_acl_tcam_region_alloc(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_region *region) { struct mlxsw_afk_key_info *key_info = region->key_info; char ptar_pl[MLXSW_REG_PTAR_LEN]; unsigned int encodings_count; int i; int err; mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_ALLOC, region->key_type, MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT, region->id, region->tcam_region_info); encodings_count = mlxsw_afk_key_info_blocks_count_get(key_info); for (i = 0; i < encodings_count; i++) { u16 encoding; encoding = mlxsw_afk_key_info_block_encoding_get(key_info, i); mlxsw_reg_ptar_key_id_pack(ptar_pl, i, encoding); } err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl); if (err) return err; mlxsw_reg_ptar_unpack(ptar_pl, region->tcam_region_info); return 0; } static void mlxsw_sp_acl_tcam_region_free(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_region *region) { char ptar_pl[MLXSW_REG_PTAR_LEN]; mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_FREE, region->key_type, 0, region->id, region->tcam_region_info); mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl); } static int mlxsw_sp_acl_tcam_region_enable(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_region *region) { char pacl_pl[MLXSW_REG_PACL_LEN]; mlxsw_reg_pacl_pack(pacl_pl, region->id, true, region->tcam_region_info); return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pacl), pacl_pl); } static void mlxsw_sp_acl_tcam_region_disable(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_region *region) { char pacl_pl[MLXSW_REG_PACL_LEN]; mlxsw_reg_pacl_pack(pacl_pl, region->id, false, region->tcam_region_info); mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pacl), pacl_pl); } static struct mlxsw_sp_acl_tcam_region * mlxsw_sp_acl_tcam_region_create(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam *tcam, struct mlxsw_sp_acl_tcam_vregion *vregion, void *hints_priv) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; struct mlxsw_sp_acl_tcam_region *region; int err; region = kzalloc(sizeof(*region) + ops->region_priv_size, GFP_KERNEL); if (!region) return ERR_PTR(-ENOMEM); region->mlxsw_sp = mlxsw_sp; region->vregion = vregion; region->key_info = vregion->key_info; err = mlxsw_sp_acl_tcam_region_id_get(tcam, ®ion->id); if (err) goto err_region_id_get; err = ops->region_associate(mlxsw_sp, region); if (err) goto err_tcam_region_associate; region->key_type = ops->key_type; err = mlxsw_sp_acl_tcam_region_alloc(mlxsw_sp, region); if (err) goto err_tcam_region_alloc; err = mlxsw_sp_acl_tcam_region_enable(mlxsw_sp, region); if (err) goto err_tcam_region_enable; err = ops->region_init(mlxsw_sp, region->priv, tcam->priv, region, hints_priv); if (err) goto err_tcam_region_init; return region; err_tcam_region_init: mlxsw_sp_acl_tcam_region_disable(mlxsw_sp, region); err_tcam_region_enable: mlxsw_sp_acl_tcam_region_free(mlxsw_sp, region); err_tcam_region_alloc: err_tcam_region_associate: mlxsw_sp_acl_tcam_region_id_put(tcam, region->id); err_region_id_get: kfree(region); return ERR_PTR(err); } static void mlxsw_sp_acl_tcam_region_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_region *region) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; ops->region_fini(mlxsw_sp, region->priv); mlxsw_sp_acl_tcam_region_disable(mlxsw_sp, region); mlxsw_sp_acl_tcam_region_free(mlxsw_sp, region); mlxsw_sp_acl_tcam_region_id_put(region->group->tcam, region->id); kfree(region); } static void mlxsw_sp_acl_tcam_vregion_rehash_work_schedule(struct mlxsw_sp_acl_tcam_vregion *vregion) { unsigned long interval = vregion->tcam->vregion_rehash_intrvl; if (!interval) return; mlxsw_core_schedule_dw(&vregion->rehash.dw, msecs_to_jiffies(interval)); } static void mlxsw_sp_acl_tcam_vregion_rehash(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vregion *vregion, int *credits); static void mlxsw_sp_acl_tcam_vregion_rehash_work(struct work_struct *work) { struct mlxsw_sp_acl_tcam_vregion *vregion = container_of(work, struct mlxsw_sp_acl_tcam_vregion, rehash.dw.work); int credits = MLXSW_SP_ACL_TCAM_VREGION_REHASH_CREDITS; mlxsw_sp_acl_tcam_vregion_rehash(vregion->mlxsw_sp, vregion, &credits); if (credits < 0) /* Rehash gone out of credits so it was interrupted. * Schedule the work as soon as possible to continue. */ mlxsw_core_schedule_dw(&vregion->rehash.dw, 0); else mlxsw_sp_acl_tcam_vregion_rehash_work_schedule(vregion); } static void mlxsw_sp_acl_tcam_rehash_ctx_vchunk_changed(struct mlxsw_sp_acl_tcam_vchunk *vchunk) { struct mlxsw_sp_acl_tcam_vregion *vregion = vchunk->vregion; /* If a rule was added or deleted from vchunk which is currently * under rehash migration, we have to reset the ventry pointers * to make sure all rules are properly migrated. */ if (vregion->rehash.ctx.current_vchunk == vchunk) { vregion->rehash.ctx.start_ventry = NULL; vregion->rehash.ctx.stop_ventry = NULL; } } static void mlxsw_sp_acl_tcam_rehash_ctx_vregion_changed(struct mlxsw_sp_acl_tcam_vregion *vregion) { /* If a chunk was added or deleted from vregion we have to reset * the current chunk pointer to make sure all chunks * are properly migrated. */ vregion->rehash.ctx.current_vchunk = NULL; } static struct mlxsw_sp_acl_tcam_vregion * mlxsw_sp_acl_tcam_vregion_create(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vgroup *vgroup, unsigned int priority, struct mlxsw_afk_element_usage *elusage) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; struct mlxsw_afk *afk = mlxsw_sp_acl_afk(mlxsw_sp->acl); struct mlxsw_sp_acl_tcam *tcam = vgroup->group.tcam; struct mlxsw_sp_acl_tcam_vregion *vregion; int err; vregion = kzalloc(sizeof(*vregion), GFP_KERNEL); if (!vregion) return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(&vregion->vchunk_list); mutex_init(&vregion->lock); vregion->tcam = tcam; vregion->mlxsw_sp = mlxsw_sp; vregion->vgroup = vgroup; vregion->ref_count = 1; vregion->key_info = mlxsw_afk_key_info_get(afk, elusage); if (IS_ERR(vregion->key_info)) { err = PTR_ERR(vregion->key_info); goto err_key_info_get; } vregion->region = mlxsw_sp_acl_tcam_region_create(mlxsw_sp, tcam, vregion, NULL); if (IS_ERR(vregion->region)) { err = PTR_ERR(vregion->region); goto err_region_create; } err = mlxsw_sp_acl_tcam_vgroup_vregion_attach(mlxsw_sp, vgroup, vregion, priority); if (err) goto err_vgroup_vregion_attach; if (vgroup->vregion_rehash_enabled && ops->region_rehash_hints_get) { /* Create the delayed work for vregion periodic rehash */ INIT_DELAYED_WORK(&vregion->rehash.dw, mlxsw_sp_acl_tcam_vregion_rehash_work); mlxsw_sp_acl_tcam_vregion_rehash_work_schedule(vregion); mutex_lock(&tcam->lock); list_add_tail(&vregion->tlist, &tcam->vregion_list); mutex_unlock(&tcam->lock); } return vregion; err_vgroup_vregion_attach: mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, vregion->region); err_region_create: mlxsw_afk_key_info_put(vregion->key_info); err_key_info_get: kfree(vregion); return ERR_PTR(err); } static void mlxsw_sp_acl_tcam_vregion_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vregion *vregion) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; struct mlxsw_sp_acl_tcam_vgroup *vgroup = vregion->vgroup; struct mlxsw_sp_acl_tcam *tcam = vregion->tcam; if (vgroup->vregion_rehash_enabled && ops->region_rehash_hints_get) { mutex_lock(&tcam->lock); list_del(&vregion->tlist); mutex_unlock(&tcam->lock); cancel_delayed_work_sync(&vregion->rehash.dw); } mlxsw_sp_acl_tcam_vgroup_vregion_detach(mlxsw_sp, vregion); if (vregion->region2) mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, vregion->region2); mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, vregion->region); mlxsw_afk_key_info_put(vregion->key_info); mutex_destroy(&vregion->lock); kfree(vregion); } u32 mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam *tcam) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; u32 vregion_rehash_intrvl; if (WARN_ON(!ops->region_rehash_hints_get)) return 0; vregion_rehash_intrvl = tcam->vregion_rehash_intrvl; return vregion_rehash_intrvl; } int mlxsw_sp_acl_tcam_vregion_rehash_intrvl_set(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam *tcam, u32 val) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; struct mlxsw_sp_acl_tcam_vregion *vregion; if (val < MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN && val) return -EINVAL; if (WARN_ON(!ops->region_rehash_hints_get)) return -EOPNOTSUPP; tcam->vregion_rehash_intrvl = val; mutex_lock(&tcam->lock); list_for_each_entry(vregion, &tcam->vregion_list, tlist) { if (val) mlxsw_core_schedule_dw(&vregion->rehash.dw, 0); else cancel_delayed_work_sync(&vregion->rehash.dw); } mutex_unlock(&tcam->lock); return 0; } static struct mlxsw_sp_acl_tcam_vregion * mlxsw_sp_acl_tcam_vregion_get(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vgroup *vgroup, unsigned int priority, struct mlxsw_afk_element_usage *elusage) { struct mlxsw_afk_element_usage vregion_elusage; struct mlxsw_sp_acl_tcam_vregion *vregion; bool need_split; vregion = mlxsw_sp_acl_tcam_vgroup_vregion_find(vgroup, priority, elusage, &need_split); if (vregion) { if (need_split) { /* According to priority, new vchunk should belong to * an existing vregion. However, this vchunk needs * elements that vregion does not contain. We need * to split the existing vregion into two and create * a new vregion for the new vchunk in between. * This is not supported now. */ return ERR_PTR(-EOPNOTSUPP); } vregion->ref_count++; return vregion; } mlxsw_sp_acl_tcam_vgroup_use_patterns(vgroup, elusage, &vregion_elusage); return mlxsw_sp_acl_tcam_vregion_create(mlxsw_sp, vgroup, priority, &vregion_elusage); } static void mlxsw_sp_acl_tcam_vregion_put(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vregion *vregion) { if (--vregion->ref_count) return; mlxsw_sp_acl_tcam_vregion_destroy(mlxsw_sp, vregion); } static struct mlxsw_sp_acl_tcam_chunk * mlxsw_sp_acl_tcam_chunk_create(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vchunk *vchunk, struct mlxsw_sp_acl_tcam_region *region) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; struct mlxsw_sp_acl_tcam_chunk *chunk; chunk = kzalloc(sizeof(*chunk) + ops->chunk_priv_size, GFP_KERNEL); if (!chunk) return ERR_PTR(-ENOMEM); chunk->vchunk = vchunk; chunk->region = region; ops->chunk_init(region->priv, chunk->priv, vchunk->priority); return chunk; } static void mlxsw_sp_acl_tcam_chunk_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_chunk *chunk) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; ops->chunk_fini(chunk->priv); kfree(chunk); } static struct mlxsw_sp_acl_tcam_vchunk * mlxsw_sp_acl_tcam_vchunk_create(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vgroup *vgroup, unsigned int priority, struct mlxsw_afk_element_usage *elusage) { struct mlxsw_sp_acl_tcam_vchunk *vchunk, *vchunk2; struct mlxsw_sp_acl_tcam_vregion *vregion; struct list_head *pos; int err; if (priority == MLXSW_SP_ACL_TCAM_CATCHALL_PRIO) return ERR_PTR(-EINVAL); vchunk = kzalloc(sizeof(*vchunk), GFP_KERNEL); if (!vchunk) return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(&vchunk->ventry_list); vchunk->priority = priority; vchunk->vgroup = vgroup; vchunk->ref_count = 1; vregion = mlxsw_sp_acl_tcam_vregion_get(mlxsw_sp, vgroup, priority, elusage); if (IS_ERR(vregion)) { err = PTR_ERR(vregion); goto err_vregion_get; } vchunk->vregion = vregion; err = rhashtable_insert_fast(&vgroup->vchunk_ht, &vchunk->ht_node, mlxsw_sp_acl_tcam_vchunk_ht_params); if (err) goto err_rhashtable_insert; mutex_lock(&vregion->lock); vchunk->chunk = mlxsw_sp_acl_tcam_chunk_create(mlxsw_sp, vchunk, vchunk->vregion->region); if (IS_ERR(vchunk->chunk)) { mutex_unlock(&vregion->lock); err = PTR_ERR(vchunk->chunk); goto err_chunk_create; } mlxsw_sp_acl_tcam_rehash_ctx_vregion_changed(vregion); /* Position the vchunk inside the list according to priority */ list_for_each(pos, &vregion->vchunk_list) { vchunk2 = list_entry(pos, typeof(*vchunk2), list); if (vchunk2->priority > priority) break; } list_add_tail(&vchunk->list, pos); mutex_unlock(&vregion->lock); mlxsw_sp_acl_tcam_vgroup_prio_update(vgroup); return vchunk; err_chunk_create: rhashtable_remove_fast(&vgroup->vchunk_ht, &vchunk->ht_node, mlxsw_sp_acl_tcam_vchunk_ht_params); err_rhashtable_insert: mlxsw_sp_acl_tcam_vregion_put(mlxsw_sp, vregion); err_vregion_get: kfree(vchunk); return ERR_PTR(err); } static void mlxsw_sp_acl_tcam_vchunk_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vchunk *vchunk) { struct mlxsw_sp_acl_tcam_vregion *vregion = vchunk->vregion; struct mlxsw_sp_acl_tcam_vgroup *vgroup = vchunk->vgroup; mutex_lock(&vregion->lock); mlxsw_sp_acl_tcam_rehash_ctx_vregion_changed(vregion); list_del(&vchunk->list); if (vchunk->chunk2) mlxsw_sp_acl_tcam_chunk_destroy(mlxsw_sp, vchunk->chunk2); mlxsw_sp_acl_tcam_chunk_destroy(mlxsw_sp, vchunk->chunk); mutex_unlock(&vregion->lock); rhashtable_remove_fast(&vgroup->vchunk_ht, &vchunk->ht_node, mlxsw_sp_acl_tcam_vchunk_ht_params); mlxsw_sp_acl_tcam_vregion_put(mlxsw_sp, vchunk->vregion); kfree(vchunk); mlxsw_sp_acl_tcam_vgroup_prio_update(vgroup); } static struct mlxsw_sp_acl_tcam_vchunk * mlxsw_sp_acl_tcam_vchunk_get(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vgroup *vgroup, unsigned int priority, struct mlxsw_afk_element_usage *elusage) { struct mlxsw_sp_acl_tcam_vchunk *vchunk; vchunk = rhashtable_lookup_fast(&vgroup->vchunk_ht, &priority, mlxsw_sp_acl_tcam_vchunk_ht_params); if (vchunk) { if (WARN_ON(!mlxsw_afk_key_info_subset(vchunk->vregion->key_info, elusage))) return ERR_PTR(-EINVAL); vchunk->ref_count++; return vchunk; } return mlxsw_sp_acl_tcam_vchunk_create(mlxsw_sp, vgroup, priority, elusage); } static void mlxsw_sp_acl_tcam_vchunk_put(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vchunk *vchunk) { if (--vchunk->ref_count) return; mlxsw_sp_acl_tcam_vchunk_destroy(mlxsw_sp, vchunk); } static struct mlxsw_sp_acl_tcam_entry * mlxsw_sp_acl_tcam_entry_create(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_ventry *ventry, struct mlxsw_sp_acl_tcam_chunk *chunk) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; struct mlxsw_sp_acl_tcam_entry *entry; int err; entry = kzalloc(sizeof(*entry) + ops->entry_priv_size, GFP_KERNEL); if (!entry) return ERR_PTR(-ENOMEM); entry->ventry = ventry; entry->chunk = chunk; err = ops->entry_add(mlxsw_sp, chunk->region->priv, chunk->priv, entry->priv, ventry->rulei); if (err) goto err_entry_add; return entry; err_entry_add: kfree(entry); return ERR_PTR(err); } static void mlxsw_sp_acl_tcam_entry_destroy(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_entry *entry) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; ops->entry_del(mlxsw_sp, entry->chunk->region->priv, entry->chunk->priv, entry->priv); kfree(entry); } static int mlxsw_sp_acl_tcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_region *region, struct mlxsw_sp_acl_tcam_entry *entry, struct mlxsw_sp_acl_rule_info *rulei) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; return ops->entry_action_replace(mlxsw_sp, region->priv, entry->priv, rulei); } static int mlxsw_sp_acl_tcam_entry_activity_get(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_entry *entry, bool *activity) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; return ops->entry_activity_get(mlxsw_sp, entry->chunk->region->priv, entry->priv, activity); } static int mlxsw_sp_acl_tcam_ventry_add(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vgroup *vgroup, struct mlxsw_sp_acl_tcam_ventry *ventry, struct mlxsw_sp_acl_rule_info *rulei) { struct mlxsw_sp_acl_tcam_vregion *vregion; struct mlxsw_sp_acl_tcam_vchunk *vchunk; int err; vchunk = mlxsw_sp_acl_tcam_vchunk_get(mlxsw_sp, vgroup, rulei->priority, &rulei->values.elusage); if (IS_ERR(vchunk)) return PTR_ERR(vchunk); ventry->vchunk = vchunk; ventry->rulei = rulei; vregion = vchunk->vregion; mutex_lock(&vregion->lock); ventry->entry = mlxsw_sp_acl_tcam_entry_create(mlxsw_sp, ventry, vchunk->chunk); if (IS_ERR(ventry->entry)) { mutex_unlock(&vregion->lock); err = PTR_ERR(ventry->entry); goto err_entry_create; } list_add_tail(&ventry->list, &vchunk->ventry_list); mlxsw_sp_acl_tcam_rehash_ctx_vchunk_changed(vchunk); mutex_unlock(&vregion->lock); return 0; err_entry_create: mlxsw_sp_acl_tcam_vchunk_put(mlxsw_sp, vchunk); return err; } static void mlxsw_sp_acl_tcam_ventry_del(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_ventry *ventry) { struct mlxsw_sp_acl_tcam_vchunk *vchunk = ventry->vchunk; struct mlxsw_sp_acl_tcam_vregion *vregion = vchunk->vregion; mutex_lock(&vregion->lock); mlxsw_sp_acl_tcam_rehash_ctx_vchunk_changed(vchunk); list_del(&ventry->list); mlxsw_sp_acl_tcam_entry_destroy(mlxsw_sp, ventry->entry); mutex_unlock(&vregion->lock); mlxsw_sp_acl_tcam_vchunk_put(mlxsw_sp, vchunk); } static int mlxsw_sp_acl_tcam_ventry_action_replace(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_ventry *ventry, struct mlxsw_sp_acl_rule_info *rulei) { struct mlxsw_sp_acl_tcam_vchunk *vchunk = ventry->vchunk; return mlxsw_sp_acl_tcam_entry_action_replace(mlxsw_sp, vchunk->vregion->region, ventry->entry, rulei); } static int mlxsw_sp_acl_tcam_ventry_activity_get(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_ventry *ventry, bool *activity) { return mlxsw_sp_acl_tcam_entry_activity_get(mlxsw_sp, ventry->entry, activity); } static int mlxsw_sp_acl_tcam_ventry_migrate(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_ventry *ventry, struct mlxsw_sp_acl_tcam_chunk *chunk, int *credits) { struct mlxsw_sp_acl_tcam_entry *new_entry; /* First check if the entry is not already where we want it to be. */ if (ventry->entry->chunk == chunk) return 0; if (--(*credits) < 0) return 0; new_entry = mlxsw_sp_acl_tcam_entry_create(mlxsw_sp, ventry, chunk); if (IS_ERR(new_entry)) return PTR_ERR(new_entry); mlxsw_sp_acl_tcam_entry_destroy(mlxsw_sp, ventry->entry); ventry->entry = new_entry; return 0; } static int mlxsw_sp_acl_tcam_vchunk_migrate_start(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vchunk *vchunk, struct mlxsw_sp_acl_tcam_region *region, struct mlxsw_sp_acl_tcam_rehash_ctx *ctx) { struct mlxsw_sp_acl_tcam_chunk *new_chunk; new_chunk = mlxsw_sp_acl_tcam_chunk_create(mlxsw_sp, vchunk, region); if (IS_ERR(new_chunk)) return PTR_ERR(new_chunk); vchunk->chunk2 = vchunk->chunk; vchunk->chunk = new_chunk; ctx->current_vchunk = vchunk; ctx->start_ventry = NULL; ctx->stop_ventry = NULL; return 0; } static void mlxsw_sp_acl_tcam_vchunk_migrate_end(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vchunk *vchunk, struct mlxsw_sp_acl_tcam_rehash_ctx *ctx) { mlxsw_sp_acl_tcam_chunk_destroy(mlxsw_sp, vchunk->chunk2); vchunk->chunk2 = NULL; ctx->current_vchunk = NULL; } static int mlxsw_sp_acl_tcam_vchunk_migrate_one(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vchunk *vchunk, struct mlxsw_sp_acl_tcam_region *region, struct mlxsw_sp_acl_tcam_rehash_ctx *ctx, int *credits) { struct mlxsw_sp_acl_tcam_ventry *ventry; int err; if (vchunk->chunk->region != region) { err = mlxsw_sp_acl_tcam_vchunk_migrate_start(mlxsw_sp, vchunk, region, ctx); if (err) return err; } else if (!vchunk->chunk2) { /* The chunk is already as it should be, nothing to do. */ return 0; } /* If the migration got interrupted, we have the ventry to start from * stored in context. */ if (ctx->start_ventry) ventry = ctx->start_ventry; else ventry = list_first_entry(&vchunk->ventry_list, typeof(*ventry), list); list_for_each_entry_from(ventry, &vchunk->ventry_list, list) { /* During rollback, once we reach the ventry that failed * to migrate, we are done. */ if (ventry == ctx->stop_ventry) break; err = mlxsw_sp_acl_tcam_ventry_migrate(mlxsw_sp, ventry, vchunk->chunk, credits); if (err) { if (ctx->this_is_rollback) { /* Save the ventry which we ended with and try * to continue later on. */ ctx->start_ventry = ventry; return err; } /* Swap the chunk and chunk2 pointers so the follow-up * rollback call will see the original chunk pointer * in vchunk->chunk. */ swap(vchunk->chunk, vchunk->chunk2); /* The rollback has to be done from beginning of the * chunk, that is why we have to null the start_ventry. * However, we know where to stop the rollback, * at the current ventry. */ ctx->start_ventry = NULL; ctx->stop_ventry = ventry; return err; } else if (*credits < 0) { /* We are out of credits, the rest of the ventries * will be migrated later. Save the ventry * which we ended with. */ ctx->start_ventry = ventry; return 0; } } mlxsw_sp_acl_tcam_vchunk_migrate_end(mlxsw_sp, vchunk, ctx); return 0; } static int mlxsw_sp_acl_tcam_vchunk_migrate_all(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vregion *vregion, struct mlxsw_sp_acl_tcam_rehash_ctx *ctx, int *credits) { struct mlxsw_sp_acl_tcam_vchunk *vchunk; int err; /* If the migration got interrupted, we have the vchunk * we are working on stored in context. */ if (ctx->current_vchunk) vchunk = ctx->current_vchunk; else vchunk = list_first_entry(&vregion->vchunk_list, typeof(*vchunk), list); list_for_each_entry_from(vchunk, &vregion->vchunk_list, list) { err = mlxsw_sp_acl_tcam_vchunk_migrate_one(mlxsw_sp, vchunk, vregion->region, ctx, credits); if (err || *credits < 0) return err; } return 0; } static int mlxsw_sp_acl_tcam_vregion_migrate(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vregion *vregion, struct mlxsw_sp_acl_tcam_rehash_ctx *ctx, int *credits) { int err, err2; trace_mlxsw_sp_acl_tcam_vregion_migrate(mlxsw_sp, vregion); mutex_lock(&vregion->lock); err = mlxsw_sp_acl_tcam_vchunk_migrate_all(mlxsw_sp, vregion, ctx, credits); if (err) { /* In case migration was not successful, we need to swap * so the original region pointer is assigned again * to vregion->region. */ swap(vregion->region, vregion->region2); ctx->current_vchunk = NULL; ctx->this_is_rollback = true; err2 = mlxsw_sp_acl_tcam_vchunk_migrate_all(mlxsw_sp, vregion, ctx, credits); if (err2) { trace_mlxsw_sp_acl_tcam_vregion_rehash_rollback_failed(mlxsw_sp, vregion); dev_err(mlxsw_sp->bus_info->dev, "Failed to rollback during vregion migration fail\n"); /* Let the rollback to be continued later on. */ } } mutex_unlock(&vregion->lock); trace_mlxsw_sp_acl_tcam_vregion_migrate_end(mlxsw_sp, vregion); return err; } static bool mlxsw_sp_acl_tcam_vregion_rehash_in_progress(const struct mlxsw_sp_acl_tcam_rehash_ctx *ctx) { return ctx->hints_priv; } static int mlxsw_sp_acl_tcam_vregion_rehash_start(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vregion *vregion, struct mlxsw_sp_acl_tcam_rehash_ctx *ctx) { const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; unsigned int priority = mlxsw_sp_acl_tcam_vregion_prio(vregion); struct mlxsw_sp_acl_tcam_region *new_region; void *hints_priv; int err; trace_mlxsw_sp_acl_tcam_vregion_rehash(mlxsw_sp, vregion); hints_priv = ops->region_rehash_hints_get(vregion->region->priv); if (IS_ERR(hints_priv)) return PTR_ERR(hints_priv); new_region = mlxsw_sp_acl_tcam_region_create(mlxsw_sp, vregion->tcam, vregion, hints_priv); if (IS_ERR(new_region)) { err = PTR_ERR(new_region); goto err_region_create; } /* vregion->region contains the pointer to the new region * we are going to migrate to. */ vregion->region2 = vregion->region; vregion->region = new_region; err = mlxsw_sp_acl_tcam_group_region_attach(mlxsw_sp, vregion->region2->group, new_region, priority, vregion->region2); if (err) goto err_group_region_attach; ctx->hints_priv = hints_priv; ctx->this_is_rollback = false; return 0; err_group_region_attach: vregion->region = vregion->region2; vregion->region2 = NULL; mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, new_region); err_region_create: ops->region_rehash_hints_put(hints_priv); return err; } static void mlxsw_sp_acl_tcam_vregion_rehash_end(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vregion *vregion, struct mlxsw_sp_acl_tcam_rehash_ctx *ctx) { struct mlxsw_sp_acl_tcam_region *unused_region = vregion->region2; const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops; vregion->region2 = NULL; mlxsw_sp_acl_tcam_group_region_detach(mlxsw_sp, unused_region); mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, unused_region); ops->region_rehash_hints_put(ctx->hints_priv); ctx->hints_priv = NULL; } static void mlxsw_sp_acl_tcam_vregion_rehash(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam_vregion *vregion, int *credits) { struct mlxsw_sp_acl_tcam_rehash_ctx *ctx = &vregion->rehash.ctx; int err; /* Check if the previous rehash work was interrupted * which means we have to continue it now. * If not, start a new rehash. */ if (!mlxsw_sp_acl_tcam_vregion_rehash_in_progress(ctx)) { err = mlxsw_sp_acl_tcam_vregion_rehash_start(mlxsw_sp, vregion, ctx); if (err) { if (err != -EAGAIN) dev_err(mlxsw_sp->bus_info->dev, "Failed get rehash hints\n"); return; } } err = mlxsw_sp_acl_tcam_vregion_migrate(mlxsw_sp, vregion, ctx, credits); if (err) { dev_err(mlxsw_sp->bus_info->dev, "Failed to migrate vregion\n"); } if (*credits >= 0) mlxsw_sp_acl_tcam_vregion_rehash_end(mlxsw_sp, vregion, ctx); } static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv4[] = { MLXSW_AFK_ELEMENT_SRC_SYS_PORT, MLXSW_AFK_ELEMENT_DMAC_32_47, MLXSW_AFK_ELEMENT_DMAC_0_31, MLXSW_AFK_ELEMENT_SMAC_32_47, MLXSW_AFK_ELEMENT_SMAC_0_31, MLXSW_AFK_ELEMENT_ETHERTYPE, MLXSW_AFK_ELEMENT_IP_PROTO, MLXSW_AFK_ELEMENT_SRC_IP_0_31, MLXSW_AFK_ELEMENT_DST_IP_0_31, MLXSW_AFK_ELEMENT_DST_L4_PORT, MLXSW_AFK_ELEMENT_SRC_L4_PORT, MLXSW_AFK_ELEMENT_VID, MLXSW_AFK_ELEMENT_PCP, MLXSW_AFK_ELEMENT_TCP_FLAGS, MLXSW_AFK_ELEMENT_IP_TTL_, MLXSW_AFK_ELEMENT_IP_ECN, MLXSW_AFK_ELEMENT_IP_DSCP, }; static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv6[] = { MLXSW_AFK_ELEMENT_ETHERTYPE, MLXSW_AFK_ELEMENT_IP_PROTO, MLXSW_AFK_ELEMENT_SRC_IP_96_127, MLXSW_AFK_ELEMENT_SRC_IP_64_95, MLXSW_AFK_ELEMENT_SRC_IP_32_63, MLXSW_AFK_ELEMENT_SRC_IP_0_31, MLXSW_AFK_ELEMENT_DST_IP_96_127, MLXSW_AFK_ELEMENT_DST_IP_64_95, MLXSW_AFK_ELEMENT_DST_IP_32_63, MLXSW_AFK_ELEMENT_DST_IP_0_31, MLXSW_AFK_ELEMENT_DST_L4_PORT, MLXSW_AFK_ELEMENT_SRC_L4_PORT, }; static const struct mlxsw_sp_acl_tcam_pattern mlxsw_sp_acl_tcam_patterns[] = { { .elements = mlxsw_sp_acl_tcam_pattern_ipv4, .elements_count = ARRAY_SIZE(mlxsw_sp_acl_tcam_pattern_ipv4), }, { .elements = mlxsw_sp_acl_tcam_pattern_ipv6, .elements_count = ARRAY_SIZE(mlxsw_sp_acl_tcam_pattern_ipv6), }, }; #define MLXSW_SP_ACL_TCAM_PATTERNS_COUNT \ ARRAY_SIZE(mlxsw_sp_acl_tcam_patterns) struct mlxsw_sp_acl_tcam_flower_ruleset { struct mlxsw_sp_acl_tcam_vgroup vgroup; }; struct mlxsw_sp_acl_tcam_flower_rule { struct mlxsw_sp_acl_tcam_ventry ventry; }; static int mlxsw_sp_acl_tcam_flower_ruleset_add(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam *tcam, void *ruleset_priv, struct mlxsw_afk_element_usage *tmplt_elusage, unsigned int *p_min_prio, unsigned int *p_max_prio) { struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv; return mlxsw_sp_acl_tcam_vgroup_add(mlxsw_sp, tcam, &ruleset->vgroup, mlxsw_sp_acl_tcam_patterns, MLXSW_SP_ACL_TCAM_PATTERNS_COUNT, tmplt_elusage, true, p_min_prio, p_max_prio); } static void mlxsw_sp_acl_tcam_flower_ruleset_del(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv) { struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv; mlxsw_sp_acl_tcam_vgroup_del(&ruleset->vgroup); } static int mlxsw_sp_acl_tcam_flower_ruleset_bind(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv, struct mlxsw_sp_port *mlxsw_sp_port, bool ingress) { struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv; return mlxsw_sp_acl_tcam_group_bind(mlxsw_sp, &ruleset->vgroup.group, mlxsw_sp_port, ingress); } static void mlxsw_sp_acl_tcam_flower_ruleset_unbind(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv, struct mlxsw_sp_port *mlxsw_sp_port, bool ingress) { struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv; mlxsw_sp_acl_tcam_group_unbind(mlxsw_sp, &ruleset->vgroup.group, mlxsw_sp_port, ingress); } static u16 mlxsw_sp_acl_tcam_flower_ruleset_group_id(void *ruleset_priv) { struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv; return mlxsw_sp_acl_tcam_group_id(&ruleset->vgroup.group); } static int mlxsw_sp_acl_tcam_flower_rule_add(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv, void *rule_priv, struct mlxsw_sp_acl_rule_info *rulei) { struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv; struct mlxsw_sp_acl_tcam_flower_rule *rule = rule_priv; return mlxsw_sp_acl_tcam_ventry_add(mlxsw_sp, &ruleset->vgroup, &rule->ventry, rulei); } static void mlxsw_sp_acl_tcam_flower_rule_del(struct mlxsw_sp *mlxsw_sp, void *rule_priv) { struct mlxsw_sp_acl_tcam_flower_rule *rule = rule_priv; mlxsw_sp_acl_tcam_ventry_del(mlxsw_sp, &rule->ventry); } static int mlxsw_sp_acl_tcam_flower_rule_action_replace(struct mlxsw_sp *mlxsw_sp, void *rule_priv, struct mlxsw_sp_acl_rule_info *rulei) { return -EOPNOTSUPP; } static int mlxsw_sp_acl_tcam_flower_rule_activity_get(struct mlxsw_sp *mlxsw_sp, void *rule_priv, bool *activity) { struct mlxsw_sp_acl_tcam_flower_rule *rule = rule_priv; return mlxsw_sp_acl_tcam_ventry_activity_get(mlxsw_sp, &rule->ventry, activity); } static const struct mlxsw_sp_acl_profile_ops mlxsw_sp_acl_tcam_flower_ops = { .ruleset_priv_size = sizeof(struct mlxsw_sp_acl_tcam_flower_ruleset), .ruleset_add = mlxsw_sp_acl_tcam_flower_ruleset_add, .ruleset_del = mlxsw_sp_acl_tcam_flower_ruleset_del, .ruleset_bind = mlxsw_sp_acl_tcam_flower_ruleset_bind, .ruleset_unbind = mlxsw_sp_acl_tcam_flower_ruleset_unbind, .ruleset_group_id = mlxsw_sp_acl_tcam_flower_ruleset_group_id, .rule_priv_size = sizeof(struct mlxsw_sp_acl_tcam_flower_rule), .rule_add = mlxsw_sp_acl_tcam_flower_rule_add, .rule_del = mlxsw_sp_acl_tcam_flower_rule_del, .rule_action_replace = mlxsw_sp_acl_tcam_flower_rule_action_replace, .rule_activity_get = mlxsw_sp_acl_tcam_flower_rule_activity_get, }; struct mlxsw_sp_acl_tcam_mr_ruleset { struct mlxsw_sp_acl_tcam_vchunk *vchunk; struct mlxsw_sp_acl_tcam_vgroup vgroup; }; struct mlxsw_sp_acl_tcam_mr_rule { struct mlxsw_sp_acl_tcam_ventry ventry; }; static int mlxsw_sp_acl_tcam_mr_ruleset_add(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_tcam *tcam, void *ruleset_priv, struct mlxsw_afk_element_usage *tmplt_elusage, unsigned int *p_min_prio, unsigned int *p_max_prio) { struct mlxsw_sp_acl_tcam_mr_ruleset *ruleset = ruleset_priv; int err; err = mlxsw_sp_acl_tcam_vgroup_add(mlxsw_sp, tcam, &ruleset->vgroup, mlxsw_sp_acl_tcam_patterns, MLXSW_SP_ACL_TCAM_PATTERNS_COUNT, tmplt_elusage, false, p_min_prio, p_max_prio); if (err) return err; /* For most of the TCAM clients it would make sense to take a tcam chunk * only when the first rule is written. This is not the case for * multicast router as it is required to bind the multicast router to a * specific ACL Group ID which must exist in HW before multicast router * is initialized. */ ruleset->vchunk = mlxsw_sp_acl_tcam_vchunk_get(mlxsw_sp, &ruleset->vgroup, 1, tmplt_elusage); if (IS_ERR(ruleset->vchunk)) { err = PTR_ERR(ruleset->vchunk); goto err_chunk_get; } return 0; err_chunk_get: mlxsw_sp_acl_tcam_vgroup_del(&ruleset->vgroup); return err; } static void mlxsw_sp_acl_tcam_mr_ruleset_del(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv) { struct mlxsw_sp_acl_tcam_mr_ruleset *ruleset = ruleset_priv; mlxsw_sp_acl_tcam_vchunk_put(mlxsw_sp, ruleset->vchunk); mlxsw_sp_acl_tcam_vgroup_del(&ruleset->vgroup); } static int mlxsw_sp_acl_tcam_mr_ruleset_bind(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv, struct mlxsw_sp_port *mlxsw_sp_port, bool ingress) { /* Binding is done when initializing multicast router */ return 0; } static void mlxsw_sp_acl_tcam_mr_ruleset_unbind(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv, struct mlxsw_sp_port *mlxsw_sp_port, bool ingress) { } static u16 mlxsw_sp_acl_tcam_mr_ruleset_group_id(void *ruleset_priv) { struct mlxsw_sp_acl_tcam_mr_ruleset *ruleset = ruleset_priv; return mlxsw_sp_acl_tcam_group_id(&ruleset->vgroup.group); } static int mlxsw_sp_acl_tcam_mr_rule_add(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv, void *rule_priv, struct mlxsw_sp_acl_rule_info *rulei) { struct mlxsw_sp_acl_tcam_mr_ruleset *ruleset = ruleset_priv; struct mlxsw_sp_acl_tcam_mr_rule *rule = rule_priv; return mlxsw_sp_acl_tcam_ventry_add(mlxsw_sp, &ruleset->vgroup, &rule->ventry, rulei); } static void mlxsw_sp_acl_tcam_mr_rule_del(struct mlxsw_sp *mlxsw_sp, void *rule_priv) { struct mlxsw_sp_acl_tcam_mr_rule *rule = rule_priv; mlxsw_sp_acl_tcam_ventry_del(mlxsw_sp, &rule->ventry); } static int mlxsw_sp_acl_tcam_mr_rule_action_replace(struct mlxsw_sp *mlxsw_sp, void *rule_priv, struct mlxsw_sp_acl_rule_info *rulei) { struct mlxsw_sp_acl_tcam_mr_rule *rule = rule_priv; return mlxsw_sp_acl_tcam_ventry_action_replace(mlxsw_sp, &rule->ventry, rulei); } static int mlxsw_sp_acl_tcam_mr_rule_activity_get(struct mlxsw_sp *mlxsw_sp, void *rule_priv, bool *activity) { *activity = false; return 0; } static const struct mlxsw_sp_acl_profile_ops mlxsw_sp_acl_tcam_mr_ops = { .ruleset_priv_size = sizeof(struct mlxsw_sp_acl_tcam_mr_ruleset), .ruleset_add = mlxsw_sp_acl_tcam_mr_ruleset_add, .ruleset_del = mlxsw_sp_acl_tcam_mr_ruleset_del, .ruleset_bind = mlxsw_sp_acl_tcam_mr_ruleset_bind, .ruleset_unbind = mlxsw_sp_acl_tcam_mr_ruleset_unbind, .ruleset_group_id = mlxsw_sp_acl_tcam_mr_ruleset_group_id, .rule_priv_size = sizeof(struct mlxsw_sp_acl_tcam_mr_rule), .rule_add = mlxsw_sp_acl_tcam_mr_rule_add, .rule_del = mlxsw_sp_acl_tcam_mr_rule_del, .rule_action_replace = mlxsw_sp_acl_tcam_mr_rule_action_replace, .rule_activity_get = mlxsw_sp_acl_tcam_mr_rule_activity_get, }; static const struct mlxsw_sp_acl_profile_ops * mlxsw_sp_acl_tcam_profile_ops_arr[] = { [MLXSW_SP_ACL_PROFILE_FLOWER] = &mlxsw_sp_acl_tcam_flower_ops, [MLXSW_SP_ACL_PROFILE_MR] = &mlxsw_sp_acl_tcam_mr_ops, }; const struct mlxsw_sp_acl_profile_ops * mlxsw_sp_acl_tcam_profile_ops(struct mlxsw_sp *mlxsw_sp, enum mlxsw_sp_acl_profile profile) { const struct mlxsw_sp_acl_profile_ops *ops; if (WARN_ON(profile >= ARRAY_SIZE(mlxsw_sp_acl_tcam_profile_ops_arr))) return NULL; ops = mlxsw_sp_acl_tcam_profile_ops_arr[profile]; if (WARN_ON(!ops)) return NULL; return ops; }
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