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net/mlx5: Move the entry index allocator to flow group

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When new flow table entry is added, we search for free index
in the flow group and not in the flow table, therefore we can move
the allocator from flow table to flow group.
In downstream patches it will enable us to lock smaller part
of the steering tree.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Maor Gottlieb 2017-07-16 15:18:45 +03:00 committed by Saeed Mahameed
parent 800350a3f1
commit 75d1d187b2
2 changed files with 10 additions and 10 deletions
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18
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
View File

@ -384,7 +384,6 @@ static void del_flow_table(struct fs_node *node)
err = mlx5_cmd_destroy_flow_table(dev, ft);
if (err)
mlx5_core_warn(dev, "flow steering can't destroy ft\n");
ida_destroy(&ft->fte_allocator);
rhltable_destroy(&ft->fgs_hash);
fs_get_obj(prio, ft->node.parent);
prio->num_ft--;
@ -445,7 +444,7 @@ static void destroy_fte(struct fs_fte *fte, struct mlx5_flow_group *fg)
WARN_ON(ret);
fte->status = 0;
fs_get_obj(ft, fg->node.parent);
ida_simple_remove(&ft->fte_allocator, fte->index);
ida_simple_remove(&fg->fte_allocator, fte->index - fg->start_index);
}
static void del_fte(struct fs_node *node)
@ -488,6 +487,7 @@ static void del_flow_group(struct fs_node *node)
ft->autogroup.num_groups--;
rhashtable_destroy(&fg->ftes_hash);
ida_destroy(&fg->fte_allocator);
err = rhltable_remove(&ft->fgs_hash,
&fg->hash,
rhash_fg);
@ -537,6 +537,7 @@ static struct mlx5_flow_group *alloc_flow_group(u32 *create_fg_in)
kfree(fg);
return ERR_PTR(ret);
}
ida_init(&fg->fte_allocator);
fg->mask.match_criteria_enable = match_criteria_enable;
memcpy(&fg->mask.match_criteria, match_criteria,
sizeof(fg->mask.match_criteria));
@ -575,7 +576,6 @@ static struct mlx5_flow_table *alloc_flow_table(int level, u16 vport, int max_ft
ft->flags = flags;
INIT_LIST_HEAD(&ft->fwd_rules);
mutex_init(&ft->lock);
ida_init(&ft->fte_allocator);
return ft;
}
@ -892,7 +892,6 @@ static struct mlx5_flow_table *__mlx5_create_flow_table(struct mlx5_flow_namespa
destroy_ft:
mlx5_cmd_destroy_flow_table(root->dev, ft);
free_ft:
ida_destroy(&ft->fte_allocator);
kfree(ft);
unlock_root:
mutex_unlock(&root->chain_lock);
@ -1003,6 +1002,7 @@ static struct mlx5_flow_group *create_flow_group_common(struct mlx5_flow_table *
rhash_fg));
err_free_fg:
rhashtable_destroy(&fg->ftes_hash);
ida_destroy(&fg->fte_allocator);
kfree(fg);
return ERR_PTR(err);
@ -1181,18 +1181,18 @@ static struct fs_fte *create_fte(struct mlx5_flow_group *fg,
u32 *match_value,
struct mlx5_flow_act *flow_act)
{
struct mlx5_flow_table *ft;
struct fs_fte *fte;
int index;
int ret;
fs_get_obj(ft, fg->node.parent);
index = ida_simple_get(&ft->fte_allocator, fg->start_index,
fg->start_index + fg->max_ftes,
index = ida_simple_get(&fg->fte_allocator, 0,
fg->max_ftes,
GFP_KERNEL);
if (index < 0)
return ERR_PTR(index);
index += fg->start_index;
fte = alloc_fte(flow_act, match_value, index);
if (IS_ERR(fte)) {
ret = PTR_ERR(fte);
@ -1207,7 +1207,7 @@ static struct fs_fte *create_fte(struct mlx5_flow_group *fg,
err_hash:
kfree(fte);
err_alloc:
ida_simple_remove(&ft->fte_allocator, index);
ida_simple_remove(&fg->fte_allocator, index - fg->start_index);
return ERR_PTR(ret);
}

2
drivers/net/ethernet/mellanox/mlx5/core/fs_core.h
View File

@ -119,7 +119,6 @@ struct mlx5_flow_table {
/* FWD rules that point on this flow table */
struct list_head fwd_rules;
u32 flags;
struct ida fte_allocator;
struct rhltable fgs_hash;
};
@ -199,6 +198,7 @@ struct mlx5_flow_group {
struct mlx5_flow_group_mask mask;
u32 start_index;
u32 max_ftes;
struct ida fte_allocator;
u32 id;
struct rhashtable ftes_hash;
struct rhlist_head hash;