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mlx5_utils.c
1188 lines (1123 loc) · 31.2 KB
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mlx5_utils.c
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2019 Mellanox Technologies, Ltd
*/
#include <rte_malloc.h>
#include <mlx5_malloc.h>
#include "mlx5_utils.h"
/********************* Indexed pool **********************/
static inline void
mlx5_ipool_lock(struct mlx5_indexed_pool *pool)
{
if (pool->cfg.need_lock)
rte_spinlock_lock(&pool->rsz_lock);
}
static inline void
mlx5_ipool_unlock(struct mlx5_indexed_pool *pool)
{
if (pool->cfg.need_lock)
rte_spinlock_unlock(&pool->rsz_lock);
}
static inline uint32_t
mlx5_trunk_idx_get(struct mlx5_indexed_pool *pool, uint32_t entry_idx)
{
struct mlx5_indexed_pool_config *cfg = &pool->cfg;
uint32_t trunk_idx = 0;
uint32_t i;
if (!cfg->grow_trunk)
return entry_idx / cfg->trunk_size;
if (entry_idx >= pool->grow_tbl[cfg->grow_trunk - 1]) {
trunk_idx = (entry_idx - pool->grow_tbl[cfg->grow_trunk - 1]) /
(cfg->trunk_size << (cfg->grow_shift *
cfg->grow_trunk)) + cfg->grow_trunk;
} else {
for (i = 0; i < cfg->grow_trunk; i++) {
if (entry_idx < pool->grow_tbl[i])
break;
}
trunk_idx = i;
}
return trunk_idx;
}
static inline uint32_t
mlx5_trunk_size_get(struct mlx5_indexed_pool *pool, uint32_t trunk_idx)
{
struct mlx5_indexed_pool_config *cfg = &pool->cfg;
return cfg->trunk_size << (cfg->grow_shift *
(trunk_idx > cfg->grow_trunk ? cfg->grow_trunk : trunk_idx));
}
static inline uint32_t
mlx5_trunk_idx_offset_get(struct mlx5_indexed_pool *pool, uint32_t trunk_idx)
{
struct mlx5_indexed_pool_config *cfg = &pool->cfg;
uint32_t offset = 0;
if (!trunk_idx)
return 0;
if (!cfg->grow_trunk)
return cfg->trunk_size * trunk_idx;
if (trunk_idx < cfg->grow_trunk)
offset = pool->grow_tbl[trunk_idx - 1];
else
offset = pool->grow_tbl[cfg->grow_trunk - 1] +
(cfg->trunk_size << (cfg->grow_shift *
cfg->grow_trunk)) * (trunk_idx - cfg->grow_trunk);
return offset;
}
struct mlx5_indexed_pool *
mlx5_ipool_create(struct mlx5_indexed_pool_config *cfg)
{
struct mlx5_indexed_pool *pool;
uint32_t i;
if (!cfg || (!cfg->malloc ^ !cfg->free) ||
(cfg->per_core_cache && cfg->release_mem_en) ||
(cfg->trunk_size && ((cfg->trunk_size & (cfg->trunk_size - 1)) ||
((__builtin_ffs(cfg->trunk_size) + TRUNK_IDX_BITS) > 32))))
return NULL;
pool = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*pool) + cfg->grow_trunk *
sizeof(pool->grow_tbl[0]), RTE_CACHE_LINE_SIZE,
SOCKET_ID_ANY);
if (!pool)
return NULL;
pool->cfg = *cfg;
if (!pool->cfg.trunk_size)
pool->cfg.trunk_size = MLX5_IPOOL_DEFAULT_TRUNK_SIZE;
if (!cfg->malloc && !cfg->free) {
pool->cfg.malloc = mlx5_malloc;
pool->cfg.free = mlx5_free;
}
if (pool->cfg.need_lock)
rte_spinlock_init(&pool->rsz_lock);
/*
* Initialize the dynamic grow trunk size lookup table to have a quick
* lookup for the trunk entry index offset.
*/
for (i = 0; i < cfg->grow_trunk; i++) {
pool->grow_tbl[i] = cfg->trunk_size << (cfg->grow_shift * i);
if (i > 0)
pool->grow_tbl[i] += pool->grow_tbl[i - 1];
}
if (!pool->cfg.max_idx)
pool->cfg.max_idx =
mlx5_trunk_idx_offset_get(pool, TRUNK_MAX_IDX + 1);
if (!cfg->per_core_cache)
pool->free_list = TRUNK_INVALID;
rte_spinlock_init(&pool->lcore_lock);
return pool;
}
static int
mlx5_ipool_grow(struct mlx5_indexed_pool *pool)
{
struct mlx5_indexed_trunk *trunk;
struct mlx5_indexed_trunk **trunk_tmp;
struct mlx5_indexed_trunk **p;
size_t trunk_size = 0;
size_t data_size;
size_t bmp_size;
uint32_t idx, cur_max_idx, i;
cur_max_idx = mlx5_trunk_idx_offset_get(pool, pool->n_trunk_valid);
if (pool->n_trunk_valid == TRUNK_MAX_IDX ||
cur_max_idx >= pool->cfg.max_idx)
return -ENOMEM;
if (pool->n_trunk_valid == pool->n_trunk) {
/* No free trunk flags, expand trunk list. */
int n_grow = pool->n_trunk_valid ? pool->n_trunk :
RTE_CACHE_LINE_SIZE / sizeof(void *);
p = pool->cfg.malloc(0, (pool->n_trunk_valid + n_grow) *
sizeof(struct mlx5_indexed_trunk *),
RTE_CACHE_LINE_SIZE, rte_socket_id());
if (!p)
return -ENOMEM;
if (pool->trunks)
memcpy(p, pool->trunks, pool->n_trunk_valid *
sizeof(struct mlx5_indexed_trunk *));
memset(RTE_PTR_ADD(p, pool->n_trunk_valid * sizeof(void *)), 0,
n_grow * sizeof(void *));
trunk_tmp = pool->trunks;
pool->trunks = p;
if (trunk_tmp)
pool->cfg.free(trunk_tmp);
pool->n_trunk += n_grow;
}
if (!pool->cfg.release_mem_en) {
idx = pool->n_trunk_valid;
} else {
/* Find the first available slot in trunk list */
for (idx = 0; idx < pool->n_trunk; idx++)
if (pool->trunks[idx] == NULL)
break;
}
trunk_size += sizeof(*trunk);
data_size = mlx5_trunk_size_get(pool, idx);
bmp_size = rte_bitmap_get_memory_footprint(data_size);
/* rte_bitmap requires memory cacheline aligned. */
trunk_size += RTE_CACHE_LINE_ROUNDUP(data_size * pool->cfg.size);
trunk_size += bmp_size;
trunk = pool->cfg.malloc(0, trunk_size,
RTE_CACHE_LINE_SIZE, rte_socket_id());
if (!trunk)
return -ENOMEM;
pool->trunks[idx] = trunk;
trunk->idx = idx;
trunk->free = data_size;
trunk->prev = TRUNK_INVALID;
trunk->next = TRUNK_INVALID;
MLX5_ASSERT(pool->free_list == TRUNK_INVALID);
pool->free_list = idx;
/* Mark all entries as available. */
trunk->bmp = rte_bitmap_init_with_all_set(data_size, &trunk->data
[RTE_CACHE_LINE_ROUNDUP(data_size * pool->cfg.size)],
bmp_size);
/* Clear the overhead bits in the trunk if it happens. */
if (cur_max_idx + data_size > pool->cfg.max_idx) {
for (i = pool->cfg.max_idx - cur_max_idx; i < data_size; i++)
rte_bitmap_clear(trunk->bmp, i);
}
MLX5_ASSERT(trunk->bmp);
pool->n_trunk_valid++;
#ifdef POOL_DEBUG
pool->trunk_new++;
pool->trunk_avail++;
#endif
return 0;
}
static inline struct mlx5_indexed_cache *
mlx5_ipool_update_global_cache(struct mlx5_indexed_pool *pool, int cidx)
{
struct mlx5_indexed_cache *gc, *lc, *olc = NULL;
lc = pool->cache[cidx]->lc;
gc = __atomic_load_n(&pool->gc, __ATOMIC_RELAXED);
if (gc && lc != gc) {
mlx5_ipool_lock(pool);
if (lc && !(--lc->ref_cnt))
olc = lc;
lc = pool->gc;
lc->ref_cnt++;
pool->cache[cidx]->lc = lc;
mlx5_ipool_unlock(pool);
if (olc)
pool->cfg.free(olc);
}
return lc;
}
static uint32_t
mlx5_ipool_allocate_from_global(struct mlx5_indexed_pool *pool, int cidx)
{
struct mlx5_indexed_trunk *trunk;
struct mlx5_indexed_cache *p, *lc, *olc = NULL;
size_t trunk_size = 0;
size_t data_size;
uint32_t cur_max_idx, trunk_idx, trunk_n;
uint32_t fetch_size, ts_idx, i;
int n_grow;
check_again:
p = NULL;
fetch_size = 0;
/*
* Fetch new index from global if possible. First round local
* cache will be NULL.
*/
lc = pool->cache[cidx]->lc;
mlx5_ipool_lock(pool);
/* Try to update local cache first. */
if (likely(pool->gc)) {
if (lc != pool->gc) {
if (lc && !(--lc->ref_cnt))
olc = lc;
lc = pool->gc;
lc->ref_cnt++;
pool->cache[cidx]->lc = lc;
}
if (lc->len) {
/* Use the updated local cache to fetch index. */
fetch_size = pool->cfg.per_core_cache >> 2;
if (lc->len < fetch_size)
fetch_size = lc->len;
lc->len -= fetch_size;
memcpy(pool->cache[cidx]->idx, &lc->idx[lc->len],
sizeof(uint32_t) * fetch_size);
}
}
mlx5_ipool_unlock(pool);
if (unlikely(olc)) {
pool->cfg.free(olc);
olc = NULL;
}
if (fetch_size) {
pool->cache[cidx]->len = fetch_size - 1;
return pool->cache[cidx]->idx[pool->cache[cidx]->len];
}
trunk_idx = lc ? __atomic_load_n(&lc->n_trunk_valid,
__ATOMIC_ACQUIRE) : 0;
trunk_n = lc ? lc->n_trunk : 0;
cur_max_idx = mlx5_trunk_idx_offset_get(pool, trunk_idx);
/* Check if index reach maximum. */
if (trunk_idx == TRUNK_MAX_IDX ||
cur_max_idx >= pool->cfg.max_idx)
return 0;
/* No enough space in trunk array, resize the trunks array. */
if (trunk_idx == trunk_n) {
n_grow = trunk_idx ? trunk_idx :
RTE_CACHE_LINE_SIZE / sizeof(void *);
cur_max_idx = mlx5_trunk_idx_offset_get(pool, trunk_n + n_grow);
/* Resize the trunk array. */
p = pool->cfg.malloc(0, ((trunk_idx + n_grow) *
sizeof(struct mlx5_indexed_trunk *)) +
(cur_max_idx * sizeof(uint32_t)) + sizeof(*p),
RTE_CACHE_LINE_SIZE, rte_socket_id());
if (!p)
return 0;
p->trunks = (struct mlx5_indexed_trunk **)&p->idx[cur_max_idx];
if (lc)
memcpy(p->trunks, lc->trunks, trunk_idx *
sizeof(struct mlx5_indexed_trunk *));
#ifdef RTE_LIBRTE_MLX5_DEBUG
memset(RTE_PTR_ADD(p->trunks, trunk_idx * sizeof(void *)), 0,
n_grow * sizeof(void *));
#endif
p->n_trunk_valid = trunk_idx;
p->n_trunk = trunk_n + n_grow;
p->len = 0;
}
/* Prepare the new trunk. */
trunk_size = sizeof(*trunk);
data_size = mlx5_trunk_size_get(pool, trunk_idx);
trunk_size += RTE_CACHE_LINE_ROUNDUP(data_size * pool->cfg.size);
trunk = pool->cfg.malloc(0, trunk_size,
RTE_CACHE_LINE_SIZE, rte_socket_id());
if (unlikely(!trunk)) {
pool->cfg.free(p);
return 0;
}
trunk->idx = trunk_idx;
trunk->free = data_size;
mlx5_ipool_lock(pool);
/*
* Double check if trunks has been updated or have available index.
* During the new trunk allocate, index may still be flushed to the
* global cache. So also need to check the pool->gc->len.
*/
if (pool->gc && (lc != pool->gc ||
lc->n_trunk_valid != trunk_idx ||
pool->gc->len)) {
mlx5_ipool_unlock(pool);
if (p)
pool->cfg.free(p);
pool->cfg.free(trunk);
goto check_again;
}
/* Resize the trunk array and update local cache first. */
if (p) {
if (lc && !(--lc->ref_cnt))
olc = lc;
lc = p;
lc->ref_cnt = 1;
pool->cache[cidx]->lc = lc;
__atomic_store_n(&pool->gc, p, __ATOMIC_RELAXED);
}
/* Add trunk to trunks array. */
lc->trunks[trunk_idx] = trunk;
__atomic_fetch_add(&lc->n_trunk_valid, 1, __ATOMIC_RELAXED);
/* Enqueue half of the index to global. */
ts_idx = mlx5_trunk_idx_offset_get(pool, trunk_idx) + 1;
fetch_size = trunk->free >> 1;
if (fetch_size > pool->cfg.per_core_cache)
fetch_size = trunk->free - pool->cfg.per_core_cache;
for (i = 0; i < fetch_size; i++)
lc->idx[i] = ts_idx + i;
lc->len = fetch_size;
mlx5_ipool_unlock(pool);
/* Copy left half - 1 to local cache index array. */
pool->cache[cidx]->len = trunk->free - fetch_size - 1;
ts_idx += fetch_size;
for (i = 0; i < pool->cache[cidx]->len; i++)
pool->cache[cidx]->idx[i] = ts_idx + i;
if (olc)
pool->cfg.free(olc);
return ts_idx + i;
}
static void *
_mlx5_ipool_get_cache(struct mlx5_indexed_pool *pool, int cidx, uint32_t idx)
{
struct mlx5_indexed_trunk *trunk;
struct mlx5_indexed_cache *lc;
uint32_t trunk_idx;
uint32_t entry_idx;
MLX5_ASSERT(idx);
if (unlikely(!pool->cache[cidx])) {
pool->cache[cidx] = pool->cfg.malloc(MLX5_MEM_ZERO,
sizeof(struct mlx5_ipool_per_lcore) +
(pool->cfg.per_core_cache * sizeof(uint32_t)),
RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
if (!pool->cache[cidx]) {
DRV_LOG(ERR, "Ipool cache%d allocate failed\n", cidx);
return NULL;
}
}
lc = mlx5_ipool_update_global_cache(pool, cidx);
idx -= 1;
trunk_idx = mlx5_trunk_idx_get(pool, idx);
trunk = lc->trunks[trunk_idx];
MLX5_ASSERT(trunk);
entry_idx = idx - mlx5_trunk_idx_offset_get(pool, trunk_idx);
return &trunk->data[entry_idx * pool->cfg.size];
}
static void *
mlx5_ipool_get_cache(struct mlx5_indexed_pool *pool, uint32_t idx)
{
void *entry;
int cidx;
cidx = rte_lcore_index(rte_lcore_id());
if (unlikely(cidx == -1)) {
cidx = RTE_MAX_LCORE;
rte_spinlock_lock(&pool->lcore_lock);
}
entry = _mlx5_ipool_get_cache(pool, cidx, idx);
if (unlikely(cidx == RTE_MAX_LCORE))
rte_spinlock_unlock(&pool->lcore_lock);
return entry;
}
static void *
_mlx5_ipool_malloc_cache(struct mlx5_indexed_pool *pool, int cidx,
uint32_t *idx)
{
if (unlikely(!pool->cache[cidx])) {
pool->cache[cidx] = pool->cfg.malloc(MLX5_MEM_ZERO,
sizeof(struct mlx5_ipool_per_lcore) +
(pool->cfg.per_core_cache * sizeof(uint32_t)),
RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
if (!pool->cache[cidx]) {
DRV_LOG(ERR, "Ipool cache%d allocate failed\n", cidx);
return NULL;
}
} else if (pool->cache[cidx]->len) {
pool->cache[cidx]->len--;
*idx = pool->cache[cidx]->idx[pool->cache[cidx]->len];
return _mlx5_ipool_get_cache(pool, cidx, *idx);
}
/* Not enough idx in global cache. Keep fetching from global. */
*idx = mlx5_ipool_allocate_from_global(pool, cidx);
if (unlikely(!(*idx)))
return NULL;
return _mlx5_ipool_get_cache(pool, cidx, *idx);
}
static void *
mlx5_ipool_malloc_cache(struct mlx5_indexed_pool *pool, uint32_t *idx)
{
void *entry;
int cidx;
cidx = rte_lcore_index(rte_lcore_id());
if (unlikely(cidx == -1)) {
cidx = RTE_MAX_LCORE;
rte_spinlock_lock(&pool->lcore_lock);
}
entry = _mlx5_ipool_malloc_cache(pool, cidx, idx);
if (unlikely(cidx == RTE_MAX_LCORE))
rte_spinlock_unlock(&pool->lcore_lock);
return entry;
}
static void
_mlx5_ipool_free_cache(struct mlx5_indexed_pool *pool, int cidx, uint32_t idx)
{
struct mlx5_ipool_per_lcore *ilc;
struct mlx5_indexed_cache *gc, *olc = NULL;
uint32_t reclaim_num = 0;
MLX5_ASSERT(idx);
/*
* When index was allocated on core A but freed on core B. In this
* case check if local cache on core B was allocated before.
*/
if (unlikely(!pool->cache[cidx])) {
pool->cache[cidx] = pool->cfg.malloc(MLX5_MEM_ZERO,
sizeof(struct mlx5_ipool_per_lcore) +
(pool->cfg.per_core_cache * sizeof(uint32_t)),
RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
if (!pool->cache[cidx]) {
DRV_LOG(ERR, "Ipool cache%d allocate failed\n", cidx);
return;
}
}
/* Try to enqueue to local index cache. */
if (pool->cache[cidx]->len < pool->cfg.per_core_cache) {
pool->cache[cidx]->idx[pool->cache[cidx]->len] = idx;
pool->cache[cidx]->len++;
return;
}
ilc = pool->cache[cidx];
reclaim_num = pool->cfg.per_core_cache >> 2;
ilc->len -= reclaim_num;
/* Local index cache full, try with global index cache. */
mlx5_ipool_lock(pool);
gc = pool->gc;
if (ilc->lc != gc) {
if (ilc->lc && !(--ilc->lc->ref_cnt))
olc = ilc->lc;
gc->ref_cnt++;
ilc->lc = gc;
}
memcpy(&gc->idx[gc->len], &ilc->idx[ilc->len],
reclaim_num * sizeof(uint32_t));
gc->len += reclaim_num;
mlx5_ipool_unlock(pool);
if (olc)
pool->cfg.free(olc);
pool->cache[cidx]->idx[pool->cache[cidx]->len] = idx;
pool->cache[cidx]->len++;
}
static void
mlx5_ipool_free_cache(struct mlx5_indexed_pool *pool, uint32_t idx)
{
int cidx;
cidx = rte_lcore_index(rte_lcore_id());
if (unlikely(cidx == -1)) {
cidx = RTE_MAX_LCORE;
rte_spinlock_lock(&pool->lcore_lock);
}
_mlx5_ipool_free_cache(pool, cidx, idx);
if (unlikely(cidx == RTE_MAX_LCORE))
rte_spinlock_unlock(&pool->lcore_lock);
}
void *
mlx5_ipool_malloc(struct mlx5_indexed_pool *pool, uint32_t *idx)
{
struct mlx5_indexed_trunk *trunk;
uint64_t slab = 0;
uint32_t iidx = 0;
void *p;
if (pool->cfg.per_core_cache)
return mlx5_ipool_malloc_cache(pool, idx);
mlx5_ipool_lock(pool);
if (pool->free_list == TRUNK_INVALID) {
/* If no available trunks, grow new. */
if (mlx5_ipool_grow(pool)) {
mlx5_ipool_unlock(pool);
return NULL;
}
}
MLX5_ASSERT(pool->free_list != TRUNK_INVALID);
trunk = pool->trunks[pool->free_list];
MLX5_ASSERT(trunk->free);
if (!rte_bitmap_scan(trunk->bmp, &iidx, &slab)) {
mlx5_ipool_unlock(pool);
return NULL;
}
MLX5_ASSERT(slab);
iidx += __builtin_ctzll(slab);
MLX5_ASSERT(iidx != UINT32_MAX);
MLX5_ASSERT(iidx < mlx5_trunk_size_get(pool, trunk->idx));
rte_bitmap_clear(trunk->bmp, iidx);
p = &trunk->data[iidx * pool->cfg.size];
/*
* The ipool index should grow continually from small to big,
* some features as metering only accept limited bits of index.
* Random index with MSB set may be rejected.
*/
iidx += mlx5_trunk_idx_offset_get(pool, trunk->idx);
iidx += 1; /* non-zero index. */
trunk->free--;
#ifdef POOL_DEBUG
pool->n_entry++;
#endif
if (!trunk->free) {
/* Full trunk will be removed from free list in imalloc. */
MLX5_ASSERT(pool->free_list == trunk->idx);
pool->free_list = trunk->next;
if (trunk->next != TRUNK_INVALID)
pool->trunks[trunk->next]->prev = TRUNK_INVALID;
trunk->prev = TRUNK_INVALID;
trunk->next = TRUNK_INVALID;
#ifdef POOL_DEBUG
pool->trunk_empty++;
pool->trunk_avail--;
#endif
}
*idx = iidx;
mlx5_ipool_unlock(pool);
return p;
}
void *
mlx5_ipool_zmalloc(struct mlx5_indexed_pool *pool, uint32_t *idx)
{
void *entry = mlx5_ipool_malloc(pool, idx);
if (entry && pool->cfg.size)
memset(entry, 0, pool->cfg.size);
return entry;
}
void
mlx5_ipool_free(struct mlx5_indexed_pool *pool, uint32_t idx)
{
struct mlx5_indexed_trunk *trunk;
uint32_t trunk_idx;
uint32_t entry_idx;
if (!idx)
return;
if (pool->cfg.per_core_cache) {
mlx5_ipool_free_cache(pool, idx);
return;
}
idx -= 1;
mlx5_ipool_lock(pool);
trunk_idx = mlx5_trunk_idx_get(pool, idx);
if ((!pool->cfg.release_mem_en && trunk_idx >= pool->n_trunk_valid) ||
(pool->cfg.release_mem_en && trunk_idx >= pool->n_trunk))
goto out;
trunk = pool->trunks[trunk_idx];
if (!trunk)
goto out;
entry_idx = idx - mlx5_trunk_idx_offset_get(pool, trunk->idx);
if (trunk_idx != trunk->idx ||
rte_bitmap_get(trunk->bmp, entry_idx))
goto out;
rte_bitmap_set(trunk->bmp, entry_idx);
trunk->free++;
if (pool->cfg.release_mem_en && trunk->free == mlx5_trunk_size_get
(pool, trunk->idx)) {
if (pool->free_list == trunk->idx)
pool->free_list = trunk->next;
if (trunk->next != TRUNK_INVALID)
pool->trunks[trunk->next]->prev = trunk->prev;
if (trunk->prev != TRUNK_INVALID)
pool->trunks[trunk->prev]->next = trunk->next;
pool->cfg.free(trunk);
pool->trunks[trunk_idx] = NULL;
pool->n_trunk_valid--;
#ifdef POOL_DEBUG
pool->trunk_avail--;
pool->trunk_free++;
#endif
if (pool->n_trunk_valid == 0) {
pool->cfg.free(pool->trunks);
pool->trunks = NULL;
pool->n_trunk = 0;
}
} else if (trunk->free == 1) {
/* Put into free trunk list head. */
MLX5_ASSERT(pool->free_list != trunk->idx);
trunk->next = pool->free_list;
trunk->prev = TRUNK_INVALID;
if (pool->free_list != TRUNK_INVALID)
pool->trunks[pool->free_list]->prev = trunk->idx;
pool->free_list = trunk->idx;
#ifdef POOL_DEBUG
pool->trunk_empty--;
pool->trunk_avail++;
#endif
}
#ifdef POOL_DEBUG
pool->n_entry--;
#endif
out:
mlx5_ipool_unlock(pool);
}
void *
mlx5_ipool_get(struct mlx5_indexed_pool *pool, uint32_t idx)
{
struct mlx5_indexed_trunk *trunk;
void *p = NULL;
uint32_t trunk_idx;
uint32_t entry_idx;
if (!idx)
return NULL;
if (pool->cfg.per_core_cache)
return mlx5_ipool_get_cache(pool, idx);
idx -= 1;
mlx5_ipool_lock(pool);
trunk_idx = mlx5_trunk_idx_get(pool, idx);
if ((!pool->cfg.release_mem_en && trunk_idx >= pool->n_trunk_valid) ||
(pool->cfg.release_mem_en && trunk_idx >= pool->n_trunk))
goto out;
trunk = pool->trunks[trunk_idx];
if (!trunk)
goto out;
entry_idx = idx - mlx5_trunk_idx_offset_get(pool, trunk->idx);
if (trunk_idx != trunk->idx ||
rte_bitmap_get(trunk->bmp, entry_idx))
goto out;
p = &trunk->data[entry_idx * pool->cfg.size];
out:
mlx5_ipool_unlock(pool);
return p;
}
int
mlx5_ipool_destroy(struct mlx5_indexed_pool *pool)
{
struct mlx5_indexed_trunk **trunks = NULL;
struct mlx5_indexed_cache *gc = pool->gc;
uint32_t i, n_trunk_valid = 0;
MLX5_ASSERT(pool);
mlx5_ipool_lock(pool);
if (pool->cfg.per_core_cache) {
for (i = 0; i <= RTE_MAX_LCORE; i++) {
/*
* Free only old global cache. Pool gc will be
* freed at last.
*/
if (pool->cache[i]) {
if (pool->cache[i]->lc &&
pool->cache[i]->lc != pool->gc &&
(!(--pool->cache[i]->lc->ref_cnt)))
pool->cfg.free(pool->cache[i]->lc);
pool->cfg.free(pool->cache[i]);
}
}
if (gc) {
trunks = gc->trunks;
n_trunk_valid = gc->n_trunk_valid;
}
} else {
gc = NULL;
trunks = pool->trunks;
n_trunk_valid = pool->n_trunk_valid;
}
for (i = 0; i < n_trunk_valid; i++) {
if (trunks[i])
pool->cfg.free(trunks[i]);
}
if (!gc && trunks)
pool->cfg.free(trunks);
if (gc)
pool->cfg.free(gc);
mlx5_ipool_unlock(pool);
mlx5_free(pool);
return 0;
}
void
mlx5_ipool_flush_cache(struct mlx5_indexed_pool *pool)
{
uint32_t i, j;
struct mlx5_indexed_cache *gc;
struct rte_bitmap *ibmp;
uint32_t bmp_num, mem_size;
if (!pool->cfg.per_core_cache)
return;
gc = pool->gc;
if (!gc)
return;
/* Reset bmp. */
bmp_num = mlx5_trunk_idx_offset_get(pool, gc->n_trunk_valid);
mem_size = rte_bitmap_get_memory_footprint(bmp_num);
pool->bmp_mem = pool->cfg.malloc(MLX5_MEM_ZERO, mem_size,
RTE_CACHE_LINE_SIZE, rte_socket_id());
if (!pool->bmp_mem) {
DRV_LOG(ERR, "Ipool bitmap mem allocate failed.\n");
return;
}
ibmp = rte_bitmap_init_with_all_set(bmp_num, pool->bmp_mem, mem_size);
if (!ibmp) {
pool->cfg.free(pool->bmp_mem);
pool->bmp_mem = NULL;
DRV_LOG(ERR, "Ipool bitmap create failed.\n");
return;
}
pool->ibmp = ibmp;
/* Clear global cache. */
for (i = 0; i < gc->len; i++)
rte_bitmap_clear(ibmp, gc->idx[i] - 1);
/* Clear core cache. */
for (i = 0; i < RTE_MAX_LCORE + 1; i++) {
struct mlx5_ipool_per_lcore *ilc = pool->cache[i];
if (!ilc)
continue;
for (j = 0; j < ilc->len; j++)
rte_bitmap_clear(ibmp, ilc->idx[j] - 1);
}
}
static void *
mlx5_ipool_get_next_cache(struct mlx5_indexed_pool *pool, uint32_t *pos)
{
struct rte_bitmap *ibmp;
uint64_t slab = 0;
uint32_t iidx = *pos;
ibmp = pool->ibmp;
if (!ibmp || !rte_bitmap_scan(ibmp, &iidx, &slab)) {
if (pool->bmp_mem) {
pool->cfg.free(pool->bmp_mem);
pool->bmp_mem = NULL;
pool->ibmp = NULL;
}
return NULL;
}
iidx += __builtin_ctzll(slab);
rte_bitmap_clear(ibmp, iidx);
iidx++;
*pos = iidx;
return mlx5_ipool_get_cache(pool, iidx);
}
void *
mlx5_ipool_get_next(struct mlx5_indexed_pool *pool, uint32_t *pos)
{
uint32_t idx = *pos;
void *entry;
if (pool->cfg.per_core_cache)
return mlx5_ipool_get_next_cache(pool, pos);
while (idx <= mlx5_trunk_idx_offset_get(pool, pool->n_trunk)) {
entry = mlx5_ipool_get(pool, idx);
if (entry) {
*pos = idx;
return entry;
}
idx++;
}
return NULL;
}
void
mlx5_ipool_dump(struct mlx5_indexed_pool *pool)
{
printf("Pool %s entry size %u, trunks %u, %d entry per trunk, "
"total: %d\n",
pool->cfg.type, pool->cfg.size, pool->n_trunk_valid,
pool->cfg.trunk_size, pool->n_trunk_valid);
#ifdef POOL_DEBUG
printf("Pool %s entry %u, trunk alloc %u, empty: %u, "
"available %u free %u\n",
pool->cfg.type, pool->n_entry, pool->trunk_new,
pool->trunk_empty, pool->trunk_avail, pool->trunk_free);
#endif
}
struct mlx5_l3t_tbl *
mlx5_l3t_create(enum mlx5_l3t_type type)
{
struct mlx5_l3t_tbl *tbl;
struct mlx5_indexed_pool_config l3t_ip_cfg = {
.trunk_size = 16,
.grow_trunk = 6,
.grow_shift = 1,
.need_lock = 0,
.release_mem_en = 1,
.malloc = mlx5_malloc,
.free = mlx5_free,
};
if (type >= MLX5_L3T_TYPE_MAX) {
rte_errno = EINVAL;
return NULL;
}
tbl = mlx5_malloc(MLX5_MEM_ZERO, sizeof(struct mlx5_l3t_tbl), 1,
SOCKET_ID_ANY);
if (!tbl) {
rte_errno = ENOMEM;
return NULL;
}
tbl->type = type;
switch (type) {
case MLX5_L3T_TYPE_WORD:
l3t_ip_cfg.size = sizeof(struct mlx5_l3t_entry_word);
l3t_ip_cfg.type = "mlx5_l3t_e_tbl_w";
break;
case MLX5_L3T_TYPE_DWORD:
l3t_ip_cfg.size = sizeof(struct mlx5_l3t_entry_dword);
l3t_ip_cfg.type = "mlx5_l3t_e_tbl_dw";
break;
case MLX5_L3T_TYPE_QWORD:
l3t_ip_cfg.size = sizeof(struct mlx5_l3t_entry_qword);
l3t_ip_cfg.type = "mlx5_l3t_e_tbl_qw";
break;
default:
l3t_ip_cfg.size = sizeof(struct mlx5_l3t_entry_ptr);
l3t_ip_cfg.type = "mlx5_l3t_e_tbl_tpr";
break;
}
rte_spinlock_init(&tbl->sl);
tbl->eip = mlx5_ipool_create(&l3t_ip_cfg);
if (!tbl->eip) {
rte_errno = ENOMEM;
mlx5_free(tbl);
tbl = NULL;
}
return tbl;
}
void
mlx5_l3t_destroy(struct mlx5_l3t_tbl *tbl)
{
struct mlx5_l3t_level_tbl *g_tbl, *m_tbl;
uint32_t i, j;
if (!tbl)
return;
g_tbl = tbl->tbl;
if (g_tbl) {
for (i = 0; i < MLX5_L3T_GT_SIZE; i++) {
m_tbl = g_tbl->tbl[i];
if (!m_tbl)
continue;
for (j = 0; j < MLX5_L3T_MT_SIZE; j++) {
if (!m_tbl->tbl[j])
continue;
MLX5_ASSERT(!((struct mlx5_l3t_entry_word *)
m_tbl->tbl[j])->ref_cnt);
mlx5_ipool_free(tbl->eip,
((struct mlx5_l3t_entry_word *)
m_tbl->tbl[j])->idx);
m_tbl->tbl[j] = 0;
if (!(--m_tbl->ref_cnt))
break;
}
MLX5_ASSERT(!m_tbl->ref_cnt);
mlx5_free(g_tbl->tbl[i]);
g_tbl->tbl[i] = 0;
if (!(--g_tbl->ref_cnt))
break;
}
MLX5_ASSERT(!g_tbl->ref_cnt);
mlx5_free(tbl->tbl);
tbl->tbl = 0;
}
mlx5_ipool_destroy(tbl->eip);
mlx5_free(tbl);
}
static int32_t
__l3t_get_entry(struct mlx5_l3t_tbl *tbl, uint32_t idx,
union mlx5_l3t_data *data)
{
struct mlx5_l3t_level_tbl *g_tbl, *m_tbl;
struct mlx5_l3t_entry_word *w_e_tbl;
struct mlx5_l3t_entry_dword *dw_e_tbl;
struct mlx5_l3t_entry_qword *qw_e_tbl;
struct mlx5_l3t_entry_ptr *ptr_e_tbl;
void *e_tbl;
uint32_t entry_idx;
g_tbl = tbl->tbl;
if (!g_tbl)
return -1;
m_tbl = g_tbl->tbl[(idx >> MLX5_L3T_GT_OFFSET) & MLX5_L3T_GT_MASK];
if (!m_tbl)
return -1;
e_tbl = m_tbl->tbl[(idx >> MLX5_L3T_MT_OFFSET) & MLX5_L3T_MT_MASK];
if (!e_tbl)
return -1;
entry_idx = idx & MLX5_L3T_ET_MASK;
switch (tbl->type) {
case MLX5_L3T_TYPE_WORD:
w_e_tbl = (struct mlx5_l3t_entry_word *)e_tbl;
data->word = w_e_tbl->entry[entry_idx].data;
if (w_e_tbl->entry[entry_idx].data)
w_e_tbl->entry[entry_idx].ref_cnt++;
break;
case MLX5_L3T_TYPE_DWORD:
dw_e_tbl = (struct mlx5_l3t_entry_dword *)e_tbl;
data->dword = dw_e_tbl->entry[entry_idx].data;
if (dw_e_tbl->entry[entry_idx].data)
dw_e_tbl->entry[entry_idx].ref_cnt++;
break;
case MLX5_L3T_TYPE_QWORD:
qw_e_tbl = (struct mlx5_l3t_entry_qword *)e_tbl;
data->qword = qw_e_tbl->entry[entry_idx].data;
if (qw_e_tbl->entry[entry_idx].data)
qw_e_tbl->entry[entry_idx].ref_cnt++;
break;
default:
ptr_e_tbl = (struct mlx5_l3t_entry_ptr *)e_tbl;
data->ptr = ptr_e_tbl->entry[entry_idx].data;
if (ptr_e_tbl->entry[entry_idx].data)
ptr_e_tbl->entry[entry_idx].ref_cnt++;
break;
}
return 0;
}
int32_t
mlx5_l3t_get_entry(struct mlx5_l3t_tbl *tbl, uint32_t idx,
union mlx5_l3t_data *data)
{
int ret;
rte_spinlock_lock(&tbl->sl);
ret = __l3t_get_entry(tbl, idx, data);
rte_spinlock_unlock(&tbl->sl);
return ret;
}
int32_t
mlx5_l3t_clear_entry(struct mlx5_l3t_tbl *tbl, uint32_t idx)
{
struct mlx5_l3t_level_tbl *g_tbl, *m_tbl;
struct mlx5_l3t_entry_word *w_e_tbl;
struct mlx5_l3t_entry_dword *dw_e_tbl;
struct mlx5_l3t_entry_qword *qw_e_tbl;
struct mlx5_l3t_entry_ptr *ptr_e_tbl;
void *e_tbl;
uint32_t entry_idx;
uint64_t ref_cnt;
int32_t ret = -1;
rte_spinlock_lock(&tbl->sl);
g_tbl = tbl->tbl;
if (!g_tbl)
goto out;
m_tbl = g_tbl->tbl[(idx >> MLX5_L3T_GT_OFFSET) & MLX5_L3T_GT_MASK];