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mlxsw: spectrum: Implement chain template hinting

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Since cld_flower provides information about the filter template for
specific chain, use this information in order to prepare a region.
Use the template to find out what elements are going to be used
and pass that down to mlxsw_sp_acl_tcam_group_add(). Later on, when the
first filter is inserted, the mlxsw_sp_acl_tcam_group_use_patterns()
function would use this element usage information instead of looking
up a pattern.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2018-07-23 09:23:12 +02:00 committed by David S. Miller
parent 3473845273
commit e2f2a1fd5b
6 changed files with 86 additions and 12 deletions
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5
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -1455,6 +1455,11 @@ mlxsw_sp_setup_tc_cls_flower(struct mlxsw_sp_acl_block *acl_block,
return 0;
case TC_CLSFLOWER_STATS:
return mlxsw_sp_flower_stats(mlxsw_sp, acl_block, f);
case TC_CLSFLOWER_TMPLT_CREATE:
return mlxsw_sp_flower_tmplt_create(mlxsw_sp, acl_block, f);
case TC_CLSFLOWER_TMPLT_DESTROY:
mlxsw_sp_flower_tmplt_destroy(mlxsw_sp, acl_block, f);
return 0;
default:
return -EOPNOTSUPP;
}

9
drivers/net/ethernet/mellanox/mlxsw/spectrum.h
View File

@ -543,7 +543,8 @@ mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *
mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block, u32 chain_index,
enum mlxsw_sp_acl_profile profile);
enum mlxsw_sp_acl_profile profile,
struct mlxsw_afk_element_usage *tmplt_elusage);
void mlxsw_sp_acl_ruleset_put(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset);
u16 mlxsw_sp_acl_ruleset_group_id(struct mlxsw_sp_acl_ruleset *ruleset);
@ -667,6 +668,12 @@ void mlxsw_sp_flower_destroy(struct mlxsw_sp *mlxsw_sp,
int mlxsw_sp_flower_stats(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block,
struct tc_cls_flower_offload *f);
int mlxsw_sp_flower_tmplt_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block,
struct tc_cls_flower_offload *f);
void mlxsw_sp_flower_tmplt_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block,
struct tc_cls_flower_offload *f);
/* spectrum_qdisc.c */
int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port);

12
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
View File

@ -317,7 +317,8 @@ int mlxsw_sp_acl_block_unbind(struct mlxsw_sp *mlxsw_sp,
static struct mlxsw_sp_acl_ruleset *
mlxsw_sp_acl_ruleset_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block, u32 chain_index,
const struct mlxsw_sp_acl_profile_ops *ops)
const struct mlxsw_sp_acl_profile_ops *ops,
struct mlxsw_afk_element_usage *tmplt_elusage)
{
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
struct mlxsw_sp_acl_ruleset *ruleset;
@ -337,7 +338,8 @@ mlxsw_sp_acl_ruleset_create(struct mlxsw_sp *mlxsw_sp,
if (err)
goto err_rhashtable_init;
err = ops->ruleset_add(mlxsw_sp, &acl->tcam, ruleset->priv);
err = ops->ruleset_add(mlxsw_sp, &acl->tcam, ruleset->priv,
tmplt_elusage);
if (err)
goto err_ops_ruleset_add;
@ -419,7 +421,8 @@ mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *
mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block, u32 chain_index,
enum mlxsw_sp_acl_profile profile)
enum mlxsw_sp_acl_profile profile,
struct mlxsw_afk_element_usage *tmplt_elusage)
{
const struct mlxsw_sp_acl_profile_ops *ops;
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
@ -434,7 +437,8 @@ mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp,
mlxsw_sp_acl_ruleset_ref_inc(ruleset);
return ruleset;
}
return mlxsw_sp_acl_ruleset_create(mlxsw_sp, block, chain_index, ops);
return mlxsw_sp_acl_ruleset_create(mlxsw_sp, block, chain_index, ops,
tmplt_elusage);
}
void mlxsw_sp_acl_ruleset_put(struct mlxsw_sp *mlxsw_sp,

25
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
View File

@ -189,6 +189,8 @@ struct mlxsw_sp_acl_tcam_group {
struct mlxsw_sp_acl_tcam_group_ops *ops;
const struct mlxsw_sp_acl_tcam_pattern *patterns;
unsigned int patterns_count;
bool tmplt_elusage_set;
struct mlxsw_afk_element_usage tmplt_elusage;
};
struct mlxsw_sp_acl_tcam_chunk {
@ -234,13 +236,19 @@ mlxsw_sp_acl_tcam_group_add(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_tcam *tcam,
struct mlxsw_sp_acl_tcam_group *group,
const struct mlxsw_sp_acl_tcam_pattern *patterns,
unsigned int patterns_count)
unsigned int patterns_count,
struct mlxsw_afk_element_usage *tmplt_elusage)
{
int err;
group->tcam = tcam;
group->patterns = patterns;
group->patterns_count = patterns_count;
if (tmplt_elusage) {
group->tmplt_elusage_set = true;
memcpy(&group->tmplt_elusage, tmplt_elusage,
sizeof(group->tmplt_elusage));
}
INIT_LIST_HEAD(&group->region_list);
err = mlxsw_sp_acl_tcam_group_id_get(tcam, &group->id);
if (err)
@ -449,6 +457,15 @@ mlxsw_sp_acl_tcam_group_use_patterns(struct mlxsw_sp_acl_tcam_group *group,
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 (group->tmplt_elusage_set) {
memcpy(out, &group->tmplt_elusage, sizeof(*out));
WARN_ON(!mlxsw_afk_element_usage_subset(elusage, out));
return;
}
for (i = 0; i < group->patterns_count; i++) {
pattern = &group->patterns[i];
mlxsw_afk_element_usage_fill(out, pattern->elements,
@ -865,13 +882,15 @@ struct mlxsw_sp_acl_tcam_flower_rule {
static int
mlxsw_sp_acl_tcam_flower_ruleset_add(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_tcam *tcam,
void *ruleset_priv)
void *ruleset_priv,
struct mlxsw_afk_element_usage *tmplt_elusage)
{
struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;
return mlxsw_sp_acl_tcam_group_add(mlxsw_sp, tcam, &ruleset->group,
mlxsw_sp_acl_tcam_patterns,
MLXSW_SP_ACL_TCAM_PATTERNS_COUNT);
MLXSW_SP_ACL_TCAM_PATTERNS_COUNT,
tmplt_elusage);
}
static void

3
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h
View File

@ -64,7 +64,8 @@ int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_profile_ops {
size_t ruleset_priv_size;
int (*ruleset_add)(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_tcam *tcam, void *ruleset_priv);
struct mlxsw_sp_acl_tcam *tcam, void *ruleset_priv,
struct mlxsw_afk_element_usage *tmplt_elusage);
void (*ruleset_del)(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv);
int (*ruleset_bind)(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv,
struct mlxsw_sp_port *mlxsw_sp_port,

44
drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
View File

@ -414,7 +414,7 @@ int mlxsw_sp_flower_replace(struct mlxsw_sp *mlxsw_sp,
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER);
MLXSW_SP_ACL_PROFILE_FLOWER, NULL);
if (IS_ERR(ruleset))
return PTR_ERR(ruleset);
@ -458,7 +458,7 @@ void mlxsw_sp_flower_destroy(struct mlxsw_sp *mlxsw_sp,
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER);
MLXSW_SP_ACL_PROFILE_FLOWER, NULL);
if (IS_ERR(ruleset))
return;
@ -484,7 +484,7 @@ int mlxsw_sp_flower_stats(struct mlxsw_sp *mlxsw_sp,
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER);
MLXSW_SP_ACL_PROFILE_FLOWER, NULL);
if (WARN_ON(IS_ERR(ruleset)))
return -EINVAL;
@ -506,3 +506,41 @@ err_rule_get_stats:
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return err;
}
int mlxsw_sp_flower_tmplt_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block,
struct tc_cls_flower_offload *f)
{
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule_info rulei;
int err;
memset(&rulei, 0, sizeof(rulei));
err = mlxsw_sp_flower_parse(mlxsw_sp, block, &rulei, f);
if (err)
return err;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER,
&rulei.values.elusage);
if (IS_ERR(ruleset))
return PTR_ERR(ruleset);
/* keep the reference to the ruleset */
return 0;
}
void mlxsw_sp_flower_tmplt_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block,
struct tc_cls_flower_offload *f)
{
struct mlxsw_sp_acl_ruleset *ruleset;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER, NULL);
if (IS_ERR(ruleset))
return;
/* put the reference to the ruleset kept in create */
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
}