[dpdk-dev] [PATCH v5 3/7] net/mlx5: support pop flow action on VLAN header
Moti Haimovsky
motih at mellanox.com
Mon Sep 9 17:56:45 CEST 2019
This commit adds support for RTE_FLOW_ACTION_TYPE_OF_POP_VLAN via
direct verbs flow rules.
Signed-off-by: Moti Haimovsky <motih at mellanox.com>
---
doc/guides/nics/mlx5.rst | 10 +++++
doc/guides/rel_notes/release_19_11.rst | 6 +++
drivers/net/mlx5/mlx5.c | 9 ++++
drivers/net/mlx5/mlx5.h | 2 +
drivers/net/mlx5/mlx5_flow.h | 5 ++-
drivers/net/mlx5/mlx5_flow_dv.c | 78 ++++++++++++++++++++++++++++++++++
6 files changed, 109 insertions(+), 1 deletion(-)
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index 4115520..2ae2e8f 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -124,6 +124,12 @@ Limitations
Will match any ipv4 packet (VLAN included).
+- VLAN pop offload command:
+
+ - Flow rules having a VLAN pop offload command as one of their actions and
+ are lacking a match on VLAN as one of their items are not supported.
+ - The command is not supported on egress traffic.
+
- A multi segment packet must have not more segments than reported by dev_infos_get()
in tx_desc_lim.nb_seg_max field. This value depends on maximal supported Tx descriptor
size and ``txq_inline_min`` settings and may be from 2 (worst case forced by maximal
@@ -1032,6 +1038,10 @@ Supported hardware offloads
| | | rdma-core 24 | | N/A |
| | | ConnectX-5 | | N/A |
+-----------------------+-----------------+-----------------+
+ | | VLAN | | DPDK 19.11 | | DPDK 19.11 |
+ | | (of_pop_vlan) | | OFED 4.6-4 | | OFED 4.6-4 |
+ | | | ConnectX-5 | | ConnectX-5 |
+ +-----------------------+-----------------+-----------------+
Notes for testpmd
-----------------
diff --git a/doc/guides/rel_notes/release_19_11.rst b/doc/guides/rel_notes/release_19_11.rst
index 27cfbd9..5c2ac15 100644
--- a/doc/guides/rel_notes/release_19_11.rst
+++ b/doc/guides/rel_notes/release_19_11.rst
@@ -223,3 +223,9 @@ Tested Platforms
Also, make sure to start the actual text at the margin.
=========================================================
+* **Updated Mellanox mlx5 driver.**
+
+ Updated Mellanox mlx5 driver with new features and improvements, including:
+
+ * Added support for VLAN pop flow offload command.
+
diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index dc7b10b..8e10932 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -549,6 +549,7 @@ struct mlx5_dev_spawn_data {
sh->esw_drop_action = mlx5_glue->dr_create_flow_action_drop();
}
#endif
+ sh->pop_vlan_action = mlx5_glue->dr_create_flow_action_pop_vlan();
sh->dv_refcnt++;
priv->dr_shared = 1;
return 0;
@@ -571,6 +572,10 @@ struct mlx5_dev_spawn_data {
mlx5_glue->destroy_flow_action(sh->esw_drop_action);
sh->esw_drop_action = NULL;
}
+ if (sh->pop_vlan_action) {
+ mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
+ sh->pop_vlan_action = NULL;
+ }
return err;
#else
(void)priv;
@@ -616,6 +621,10 @@ struct mlx5_dev_spawn_data {
sh->esw_drop_action = NULL;
}
#endif
+ if (sh->pop_vlan_action) {
+ mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
+ sh->pop_vlan_action = NULL;
+ }
pthread_mutex_destroy(&sh->dv_mutex);
#else
(void)priv;
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 09ca4b1..a18f588 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -570,6 +570,8 @@ struct mlx5_ibv_shared {
struct mlx5_flow_tbl_resource tx_tbl[MLX5_MAX_TABLES];
/* TX Direct Rules tables. */
void *esw_drop_action; /* Pointer to DR E-Switch drop action. */
+ void *pop_vlan_action; /* Pointer to DR pop VLAN action. */
+ /* TX Direct Rules tables/ */
LIST_HEAD(matchers, mlx5_flow_dv_matcher) matchers;
LIST_HEAD(encap_decap, mlx5_flow_dv_encap_decap_resource) encaps_decaps;
LIST_HEAD(modify_cmd, mlx5_flow_dv_modify_hdr_resource) modify_cmds;
diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index 8d193b6..06b0470 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -154,7 +154,8 @@
#define MLX5_FLOW_DECAP_ACTIONS (MLX5_FLOW_ACTION_VXLAN_DECAP | \
MLX5_FLOW_ACTION_NVGRE_DECAP | \
- MLX5_FLOW_ACTION_RAW_DECAP)
+ MLX5_FLOW_ACTION_RAW_DECAP | \
+ MLX5_FLOW_ACTION_OF_POP_VLAN)
#define MLX5_FLOW_MODIFY_HDR_ACTIONS (MLX5_FLOW_ACTION_SET_IPV4_SRC | \
MLX5_FLOW_ACTION_SET_IPV4_DST | \
@@ -171,6 +172,8 @@
MLX5_FLOW_ACTION_INC_TCP_ACK | \
MLX5_FLOW_ACTION_DEC_TCP_ACK)
+#define MLX5_FLOW_VLAN_ACTIONS (MLX5_FLOW_ACTION_OF_POP_VLAN)
+
#ifndef IPPROTO_MPLS
#define IPPROTO_MPLS 137
#endif
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 7b2ba07..fd2e810 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -815,6 +815,61 @@ struct field_modify_info modify_tcp[] = {
}
/**
+ * Validate the pop VLAN action.
+ *
+ * @param[in] action_flags
+ * Holds the actions detected until now.
+ * @param[in] action
+ * Pointer to the pop vlan action.
+ * @param[in] item_flags
+ * The items found in this flow rule.
+ * @param[in] attr
+ * Pointer to flow attributes.
+ * @param[out] error
+ * Pointer to error structure.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_dv_validate_action_pop_vlan(struct rte_eth_dev *dev,
+ uint64_t action_flags,
+ const struct rte_flow_action *action,
+ uint64_t item_flags,
+ const struct rte_flow_attr *attr,
+ struct rte_flow_error *error)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+
+ (void)action;
+ (void)attr;
+ if (!priv->sh->pop_vlan_action)
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+ NULL,
+ "pop vlan action is not supported");
+ /*
+ * Check for inconsistencies:
+ * fail strip_vlan in a flow that matches packets without VLAN tags.
+ * fail strip_vlan in a flow that matches packets without explicitly a
+ * matching on VLAN tag ?
+ */
+ if (action_flags & MLX5_FLOW_ACTION_OF_POP_VLAN)
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+ NULL,
+ "no support for multiple vlan pop "
+ "actions");
+ if (!(item_flags & MLX5_FLOW_LAYER_OUTER_VLAN))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+ NULL,
+ "cannot pop vlan without a "
+ "match on (outer) vlan in the flow");
+ return 0;
+}
+
+/**
* Validate count action.
*
* @param[in] dev
@@ -3109,6 +3164,16 @@ struct field_modify_info modify_tcp[] = {
action_flags |= MLX5_FLOW_ACTION_COUNT;
++actions_n;
break;
+ case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
+ if (flow_dv_validate_action_pop_vlan(dev,
+ action_flags,
+ actions,
+ item_flags, attr,
+ error))
+ return -rte_errno;
+ action_flags |= MLX5_FLOW_ACTION_OF_POP_VLAN;
+ ++actions_n;
+ break;
case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
ret = flow_dv_validate_action_l2_encap(action_flags,
@@ -3283,6 +3348,13 @@ struct field_modify_info modify_tcp[] = {
"action not supported");
}
}
+ if ((action_flags & MLX5_FLOW_LAYER_TUNNEL) &&
+ (action_flags & MLX5_FLOW_VLAN_ACTIONS))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ actions,
+ "can't have vxlan and vlan"
+ " actions in the same rule");
/* Eswitch has few restrictions on using items and actions */
if (attr->transfer) {
if (action_flags & MLX5_FLOW_ACTION_FLAG)
@@ -4801,6 +4873,12 @@ struct field_modify_info modify_tcp[] = {
action,
"cannot create counter"
" object.");
+ break;
+ case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
+ dev_flow->dv.actions[actions_n++] =
+ priv->sh->pop_vlan_action;
+ action_flags |= MLX5_FLOW_ACTION_OF_POP_VLAN;
+ break;
case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
if (flow_dv_create_action_l2_encap(dev, actions,
--
1.8.3.1
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