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net/mlx5: Add support in forward to namespace 

Currently, fs_core supports rule of forward the traffic
to continue matching in the next priority, now we add support
to forward the traffic matching in the next namespace.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Maor Gottlieb 2020-05-04 08:30:10 +03:00 committed by Leon Romanovsky
parent 14c129e301
commit 9254f8ed15
3 changed files with 51 additions and 9 deletions
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57
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
View File

@ -384,6 +384,12 @@ static struct fs_prio *find_prio(struct mlx5_flow_namespace *ns,
return NULL;
}
static bool is_fwd_next_action(u32 action)
{
return action & (MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO |
MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS);
}
static bool check_valid_spec(const struct mlx5_flow_spec *spec)
{
int i;
@ -502,7 +508,7 @@ static void del_sw_hw_rule(struct fs_node *node)
fs_get_obj(rule, node);
fs_get_obj(fte, rule->node.parent);
trace_mlx5_fs_del_rule(rule);
if (rule->sw_action == MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO) {
if (is_fwd_next_action(rule->sw_action)) {
mutex_lock(&rule->dest_attr.ft->lock);
list_del(&rule->next_ft);
mutex_unlock(&rule->dest_attr.ft->lock);
@ -826,6 +832,36 @@ static struct mlx5_flow_table *find_prev_chained_ft(struct fs_prio *prio)
return find_closest_ft(prio, true);
}
static struct fs_prio *find_fwd_ns_prio(struct mlx5_flow_root_namespace *root,
struct mlx5_flow_namespace *ns)
{
struct mlx5_flow_namespace *root_ns = &root->ns;
struct fs_prio *iter_prio;
struct fs_prio *prio;
fs_get_obj(prio, ns->node.parent);
list_for_each_entry(iter_prio, &root_ns->node.children, node.list) {
if (iter_prio == prio &&
!list_is_last(&prio->node.children, &iter_prio->node.list))
return list_next_entry(iter_prio, node.list);
}
return NULL;
}
static struct mlx5_flow_table *find_next_fwd_ft(struct mlx5_flow_table *ft,
struct mlx5_flow_act *flow_act)
{
struct mlx5_flow_root_namespace *root = find_root(&ft->node);
struct fs_prio *prio;
if (flow_act->action & MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS)
prio = find_fwd_ns_prio(root, ft->ns);
else
fs_get_obj(prio, ft->node.parent);
return (prio) ? find_next_chained_ft(prio) : NULL;
}
static int connect_fts_in_prio(struct mlx5_core_dev *dev,
struct fs_prio *prio,
struct mlx5_flow_table *ft)
@ -976,6 +1012,10 @@ static int connect_fwd_rules(struct mlx5_core_dev *dev,
list_splice_init(&old_next_ft->fwd_rules, &new_next_ft->fwd_rules);
mutex_unlock(&old_next_ft->lock);
list_for_each_entry(iter, &new_next_ft->fwd_rules, next_ft) {
if ((iter->sw_action & MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS) &&
iter->ft->ns == new_next_ft->ns)
continue;
err = _mlx5_modify_rule_destination(iter, &dest);
if (err)
pr_err("mlx5_core: failed to modify rule to point on flow table %d\n",
@ -1077,6 +1117,7 @@ static struct mlx5_flow_table *__mlx5_create_flow_table(struct mlx5_flow_namespa
next_ft = unmanaged ? ft_attr->next_ft :
find_next_chained_ft(fs_prio);
ft->def_miss_action = ns->def_miss_action;
ft->ns = ns;
err = root->cmds->create_flow_table(root, ft, log_table_sz, next_ft);
if (err)
goto free_ft;
@ -1903,21 +1944,19 @@ mlx5_add_flow_rules(struct mlx5_flow_table *ft,
struct mlx5_flow_table *next_ft = NULL;
struct mlx5_flow_handle *handle = NULL;
u32 sw_action = flow_act->action;
struct fs_prio *prio;
int i;
if (!spec)
spec = &zero_spec;
if (!(sw_action & MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO))
if (!is_fwd_next_action(sw_action))
return _mlx5_add_flow_rules(ft, spec, flow_act, dest, num_dest);
if (!fwd_next_prio_supported(ft))
return ERR_PTR(-EOPNOTSUPP);
mutex_lock(&root->chain_lock);
fs_get_obj(prio, ft->node.parent);
next_ft = find_next_chained_ft(prio);
next_ft = find_next_fwd_ft(ft, flow_act);
if (!next_ft) {
handle = ERR_PTR(-EOPNOTSUPP);
goto unlock;
@ -1936,8 +1975,8 @@ mlx5_add_flow_rules(struct mlx5_flow_table *ft,
gen_dest[i].ft = next_ft;
dest = gen_dest;
num_dest++;
flow_act->action &=
~MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
flow_act->action &= ~(MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO |
MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS);
flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
handle = _mlx5_add_flow_rules(ft, spec, flow_act, dest, num_dest);
if (IS_ERR(handle))
@ -1948,8 +1987,8 @@ mlx5_add_flow_rules(struct mlx5_flow_table *ft,
list_add(&handle->rule[num_dest - 1]->next_ft,
&next_ft->fwd_rules);
mutex_unlock(&next_ft->lock);
handle->rule[num_dest - 1]->sw_action =
MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
handle->rule[num_dest - 1]->sw_action = sw_action;
handle->rule[num_dest - 1]->ft = ft;
}
unlock:
mutex_unlock(&root->chain_lock);

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

@ -138,6 +138,7 @@ struct fs_node {
struct mlx5_flow_rule {
struct fs_node node;
struct mlx5_flow_table *ft;
struct mlx5_flow_destination dest_attr;
/* next_ft should be accessed under chain_lock and only of
* destination type is FWD_NEXT_fT.
@ -175,6 +176,7 @@ struct mlx5_flow_table {
u32 flags;
struct rhltable fgs_hash;
enum mlx5_flow_table_miss_action def_miss_action;
struct mlx5_flow_namespace *ns;
};
struct mlx5_ft_underlay_qp {

1
include/linux/mlx5/fs.h
View File

@ -42,6 +42,7 @@ enum {
MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO = 1 << 16,
MLX5_FLOW_CONTEXT_ACTION_ENCRYPT = 1 << 17,
MLX5_FLOW_CONTEXT_ACTION_DECRYPT = 1 << 18,
MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS = 1 << 19,
};
enum {