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net/mlx5e: Add offloading of E-Switch TC pedit (header re-write) actions

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This includes calling the parsing code that translates from pedit
speak to the HW API, allocation (deallocation) of a modify header
context and setting the modify header id associated with this
context to the FTE of that flow.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Or Gerlitz 2017-01-25 20:24:20 +02:00 committed by Saeed Mahameed
parent 2f4fe4cab0
commit d7e75a325c
3 changed files with 39 additions and 4 deletions
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37
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
View File

@ -98,7 +98,6 @@ mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
.action = attr->action,
.flow_tag = attr->flow_tag,
.encap_id = 0,
.modify_id = attr->mod_hdr_id,
};
struct mlx5_fc *counter = NULL;
struct mlx5_flow_handle *rule;
@ -122,6 +121,7 @@ mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
parse_attr->num_mod_hdr_actions,
parse_attr->mod_hdr_actions,
&attr->mod_hdr_id);
flow_act.modify_id = attr->mod_hdr_id;
kfree(parse_attr->mod_hdr_actions);
if (err) {
rule = ERR_PTR(err);
@ -208,6 +208,18 @@ mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
goto err_add_vlan;
}
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
err = mlx5_modify_header_alloc(priv->mdev, MLX5_FLOW_NAMESPACE_FDB,
parse_attr->num_mod_hdr_actions,
parse_attr->mod_hdr_actions,
&attr->mod_hdr_id);
kfree(parse_attr->mod_hdr_actions);
if (err) {
rule = ERR_PTR(err);
goto err_mod_hdr;
}
}
rule = mlx5_eswitch_add_offloaded_rule(esw, &parse_attr->spec, attr);
if (IS_ERR(rule))
goto err_add_rule;
@ -215,11 +227,14 @@ mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
return rule;
err_add_rule:
if (flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
mlx5_modify_header_dealloc(priv->mdev,
attr->mod_hdr_id);
err_mod_hdr:
mlx5_eswitch_del_vlan_action(esw, attr);
err_add_vlan:
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
mlx5e_detach_encap(priv, flow);
return rule;
}
@ -227,6 +242,7 @@ static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_esw_flow_attr *attr = flow->esw_attr;
mlx5_eswitch_del_offloaded_rule(esw, flow->rule, flow->esw_attr);
@ -234,6 +250,10 @@ static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
if (flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
mlx5e_detach_encap(priv, flow);
if (flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
mlx5_modify_header_dealloc(priv->mdev,
attr->mod_hdr_id);
}
static void mlx5e_detach_encap(struct mlx5e_priv *priv,
@ -1406,6 +1426,7 @@ static int mlx5e_attach_encap(struct mlx5e_priv *priv,
}
static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
struct mlx5e_tc_flow_parse_attr *parse_attr,
struct mlx5e_tc_flow *flow)
{
struct mlx5_esw_flow_attr *attr = flow->esw_attr;
@ -1429,6 +1450,16 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
continue;
}
if (is_tcf_pedit(a)) {
err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB,
parse_attr);
if (err)
return err;
attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
continue;
}
if (is_tcf_mirred_egress_redirect(a)) {
int ifindex = tcf_mirred_ifindex(a);
struct net_device *out_dev;
@ -1528,7 +1559,7 @@ int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
goto err_free;
if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
err = parse_tc_fdb_actions(priv, f->exts, flow);
err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow);
if (err < 0)
goto err_free;
flow->rule = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow);

1
drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
View File

@ -308,6 +308,7 @@ struct mlx5_esw_flow_attr {
u16 vlan;
bool vlan_handled;
struct mlx5_encap_entry *encap;
u32 mod_hdr_id;
};
int mlx5_eswitch_sqs2vport_start(struct mlx5_eswitch *esw,

5
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
View File

@ -88,7 +88,10 @@ mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DECAP)
spec->match_criteria_enable |= MLX5_MATCH_INNER_HEADERS;
if (attr->encap)
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
flow_act.modify_id = attr->mod_hdr_id;
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
flow_act.encap_id = attr->encap->encap_id;
rule = mlx5_add_flow_rules((struct mlx5_flow_table *)esw->fdb_table.fdb,