X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fmlx5%2Fmlx5_utils.c;h=e4e66ae4c55e95cdc35243fd0c3eb6327207251e;hb=c2a42d19d967e24223f06f2fc797eaed8e17c345;hp=c4c9adb0391b8fa4b8a08298b53abc9206e7c8b4;hpb=0b4ce17a11ad2a1321549d82b8767e1377cc4efe;p=dpdk.git

diff --git a/drivers/net/mlx5/mlx5_utils.c b/drivers/net/mlx5/mlx5_utils.c
index c4c9adb039..e4e66ae4c5 100644
--- a/drivers/net/mlx5/mlx5_utils.c
+++ b/drivers/net/mlx5/mlx5_utils.c
@@ -8,227 +8,6 @@
 
 #include "mlx5_utils.h"
 
-
-/********************* mlx5 list ************************/
-
-int
-mlx5_list_create(struct mlx5_list *list, const char *name, void *ctx,
-		 mlx5_list_create_cb cb_create,
-		 mlx5_list_match_cb cb_match,
-		 mlx5_list_remove_cb cb_remove,
-		 mlx5_list_clone_cb cb_clone,
-		 mlx5_list_clone_free_cb cb_clone_free)
-{
-	int i;
-
-	MLX5_ASSERT(list);
-	if (!cb_match || !cb_create || !cb_remove || !cb_clone ||
-	    !cb_clone_free)
-		return -1;
-	if (name)
-		snprintf(list->name, sizeof(list->name), "%s", name);
-	list->ctx = ctx;
-	list->cb_create = cb_create;
-	list->cb_match = cb_match;
-	list->cb_remove = cb_remove;
-	list->cb_clone = cb_clone;
-	list->cb_clone_free = cb_clone_free;
-	rte_rwlock_init(&list->lock);
-	DRV_LOG(DEBUG, "mlx5 list %s initialized.", list->name);
-	for (i = 0; i <= RTE_MAX_LCORE; i++)
-		LIST_INIT(&list->cache[i].h);
-	return 0;
-}
-
-static struct mlx5_list_entry *
-__list_lookup(struct mlx5_list *list, int lcore_index, void *ctx, bool reuse)
-{
-	struct mlx5_list_entry *entry = LIST_FIRST(&list->cache[lcore_index].h);
-	uint32_t ret;
-
-	while (entry != NULL) {
-		struct mlx5_list_entry *nentry = LIST_NEXT(entry, next);
-
-		if (list->cb_match(list, entry, ctx)) {
-			if (lcore_index < RTE_MAX_LCORE) {
-				ret = __atomic_load_n(&entry->ref_cnt,
-						      __ATOMIC_ACQUIRE);
-				if (ret == 0) {
-					LIST_REMOVE(entry, next);
-					list->cb_clone_free(list, entry);
-				}
-			}
-			entry = nentry;
-			continue;
-		}
-		if (reuse) {
-			ret = __atomic_add_fetch(&entry->ref_cnt, 1,
-						 __ATOMIC_ACQUIRE);
-			if (ret == 1u) {
-				/* Entry was invalid before, free it. */
-				LIST_REMOVE(entry, next);
-				list->cb_clone_free(list, entry);
-				entry = nentry;
-				continue;
-			}
-			DRV_LOG(DEBUG, "mlx5 list %s entry %p ref++: %u.",
-				list->name, (void *)entry, entry->ref_cnt);
-		}
-		break;
-	}
-	return entry;
-}
-
-struct mlx5_list_entry *
-mlx5_list_lookup(struct mlx5_list *list, void *ctx)
-{
-	struct mlx5_list_entry *entry = NULL;
-	int i;
-
-	rte_rwlock_read_lock(&list->lock);
-	for (i = 0; i < RTE_MAX_LCORE; i++) {
-		entry = __list_lookup(list, i, ctx, false);
-		if (entry)
-			break;
-	}
-	rte_rwlock_read_unlock(&list->lock);
-	return entry;
-}
-
-static struct mlx5_list_entry *
-mlx5_list_cache_insert(struct mlx5_list *list, int lcore_index,
-		       struct mlx5_list_entry *gentry, void *ctx)
-{
-	struct mlx5_list_entry *lentry = list->cb_clone(list, gentry, ctx);
-
-	if (unlikely(!lentry))
-		return NULL;
-	lentry->ref_cnt = 1u;
-	lentry->gentry = gentry;
-	LIST_INSERT_HEAD(&list->cache[lcore_index].h, lentry, next);
-	return lentry;
-}
-
-struct mlx5_list_entry *
-mlx5_list_register(struct mlx5_list *list, void *ctx)
-{
-	struct mlx5_list_entry *entry, *local_entry;
-	volatile uint32_t prev_gen_cnt = 0;
-	int lcore_index = rte_lcore_index(rte_lcore_id());
-
-	MLX5_ASSERT(list);
-	MLX5_ASSERT(lcore_index < RTE_MAX_LCORE);
-	if (unlikely(lcore_index == -1)) {
-		rte_errno = ENOTSUP;
-		return NULL;
-	}
-	/* 1. Lookup in local cache. */
-	local_entry = __list_lookup(list, lcore_index, ctx, true);
-	if (local_entry)
-		return local_entry;
-	/* 2. Lookup with read lock on global list, reuse if found. */
-	rte_rwlock_read_lock(&list->lock);
-	entry = __list_lookup(list, RTE_MAX_LCORE, ctx, true);
-	if (likely(entry)) {
-		rte_rwlock_read_unlock(&list->lock);
-		return mlx5_list_cache_insert(list, lcore_index, entry, ctx);
-	}
-	prev_gen_cnt = list->gen_cnt;
-	rte_rwlock_read_unlock(&list->lock);
-	/* 3. Prepare new entry for global list and for cache. */
-	entry = list->cb_create(list, entry, ctx);
-	if (unlikely(!entry))
-		return NULL;
-	local_entry = list->cb_clone(list, entry, ctx);
-	if (unlikely(!local_entry)) {
-		list->cb_remove(list, entry);
-		return NULL;
-	}
-	entry->ref_cnt = 1u;
-	local_entry->ref_cnt = 1u;
-	local_entry->gentry = entry;
-	rte_rwlock_write_lock(&list->lock);
-	/* 4. Make sure the same entry was not created before the write lock. */
-	if (unlikely(prev_gen_cnt != list->gen_cnt)) {
-		struct mlx5_list_entry *oentry = __list_lookup(list,
-							       RTE_MAX_LCORE,
-							       ctx, true);
-
-		if (unlikely(oentry)) {
-			/* 4.5. Found real race!!, reuse the old entry. */
-			rte_rwlock_write_unlock(&list->lock);
-			list->cb_remove(list, entry);
-			list->cb_clone_free(list, local_entry);
-			return mlx5_list_cache_insert(list, lcore_index, oentry,
-						      ctx);
-		}
-	}
-	/* 5. Update lists. */
-	LIST_INSERT_HEAD(&list->cache[RTE_MAX_LCORE].h, entry, next);
-	list->gen_cnt++;
-	rte_rwlock_write_unlock(&list->lock);
-	LIST_INSERT_HEAD(&list->cache[lcore_index].h, local_entry, next);
-	__atomic_add_fetch(&list->count, 1, __ATOMIC_ACQUIRE);
-	DRV_LOG(DEBUG, "mlx5 list %s entry %p new: %u.",
-		list->name, (void *)entry, entry->ref_cnt);
-	return local_entry;
-}
-
-int
-mlx5_list_unregister(struct mlx5_list *list,
-		      struct mlx5_list_entry *entry)
-{
-	struct mlx5_list_entry *gentry = entry->gentry;
-
-	if (__atomic_sub_fetch(&entry->ref_cnt, 1, __ATOMIC_ACQUIRE) != 0)
-		return 1;
-	if (__atomic_sub_fetch(&gentry->ref_cnt, 1, __ATOMIC_ACQUIRE) != 0)
-		return 1;
-	rte_rwlock_write_lock(&list->lock);
-	if (likely(gentry->ref_cnt == 0)) {
-		LIST_REMOVE(gentry, next);
-		rte_rwlock_write_unlock(&list->lock);
-		list->cb_remove(list, gentry);
-		__atomic_sub_fetch(&list->count, 1, __ATOMIC_ACQUIRE);
-		DRV_LOG(DEBUG, "mlx5 list %s entry %p removed.",
-			list->name, (void *)gentry);
-		return 0;
-	}
-	rte_rwlock_write_unlock(&list->lock);
-	return 1;
-}
-
-void
-mlx5_list_destroy(struct mlx5_list *list)
-{
-	struct mlx5_list_entry *entry;
-	int i;
-
-	MLX5_ASSERT(list);
-	for (i = 0; i <= RTE_MAX_LCORE; i++) {
-		while (!LIST_EMPTY(&list->cache[i].h)) {
-			entry = LIST_FIRST(&list->cache[i].h);
-			LIST_REMOVE(entry, next);
-			if (i == RTE_MAX_LCORE) {
-				list->cb_remove(list, entry);
-				DRV_LOG(DEBUG, "mlx5 list %s entry %p "
-					"destroyed.", list->name,
-					(void *)entry);
-			} else {
-				list->cb_clone_free(list, entry);
-			}
-		}
-	}
-	memset(list, 0, sizeof(*list));
-}
-
-uint32_t
-mlx5_list_get_entry_num(struct mlx5_list *list)
-{
-	MLX5_ASSERT(list);
-	return __atomic_load_n(&list->count, __ATOMIC_RELAXED);
-}
-
 /********************* Indexed pool **********************/
 
 static inline void