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authorViacheslav Ovsiienko <viacheslavo@mellanox.com>2019-11-07 17:09:59 +0000
committerFerruh Yigit <ferruh.yigit@intel.com>2019-11-11 14:23:02 +0100
commit55deee1715f0c52a80d4b4e37bb224638ab3c414 (patch)
treea78f598a261f808732a849e1b05fcade5c57c141 /drivers/net/mlx5
parente554b672aa05c18a602ea1e797a5e7586b4b7b4e (diff)
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net/mlx5: extend flow mark support
Flow MARK item is newly supported along with MARK action. MARK action and item are supported on both Rx and Tx. It works on the metadata reg_c[] only if extensive flow metadata register is supported. Without the support, MARK action behaves same as before - valid only on Rx and no MARK item is valid. FLAG action is also modified accordingly. FLAG action is supported on both Rx and Tx via reg_c[] if extensive flow metadata register is supported. However, the new MARK/FLAG item and action are currently disabled until register copy on loopback is supported by forthcoming patches. The actual index of engaged metadata reg_c[] register to support FLAG/MARK actions depends on dv_xmeta_en devarg value. For extensive metadata mode 1 the reg_c[1] is used and transitive MARK data width is 24. For extensive metadata mode 2 the reg_c[0] is used and transitive MARK data width might be restricted to 0 or 16 bits, depending on kernel usage of reg_c[0]. The actual supported width can be discovered by series of trials with rte_flow_validate(). Signed-off-by: Yongseok Koh <yskoh@mellanox.com> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com> Acked-by: Matan Azrad <matan@mellanox.com>
Diffstat (limited to 'drivers/net/mlx5')
-rw-r--r--drivers/net/mlx5/mlx5_flow.h5
-rw-r--r--drivers/net/mlx5/mlx5_flow_dv.c383
2 files changed, 370 insertions, 18 deletions
diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index d716b44..0445c84 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -102,6 +102,7 @@ enum mlx5_feature_name {
#define MLX5_FLOW_ITEM_METADATA (1u << 16)
#define MLX5_FLOW_ITEM_PORT_ID (1u << 17)
#define MLX5_FLOW_ITEM_TAG (1u << 18)
+#define MLX5_FLOW_ITEM_MARK (1u << 19)
/* Pattern MISC bits. */
#define MLX5_FLOW_LAYER_ICMP (1u << 19)
@@ -194,6 +195,7 @@ enum mlx5_feature_name {
#define MLX5_FLOW_ACTION_INC_TCP_ACK (1u << 30)
#define MLX5_FLOW_ACTION_DEC_TCP_ACK (1u << 31)
#define MLX5_FLOW_ACTION_SET_TAG (1ull << 32)
+#define MLX5_FLOW_ACTION_MARK_EXT (1ull << 33)
#define MLX5_FLOW_FATE_ACTIONS \
(MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_QUEUE | \
@@ -228,7 +230,8 @@ enum mlx5_feature_name {
MLX5_FLOW_ACTION_INC_TCP_ACK | \
MLX5_FLOW_ACTION_DEC_TCP_ACK | \
MLX5_FLOW_ACTION_OF_SET_VLAN_VID | \
- MLX5_FLOW_ACTION_SET_TAG)
+ MLX5_FLOW_ACTION_SET_TAG | \
+ MLX5_FLOW_ACTION_MARK_EXT)
#define MLX5_FLOW_VLAN_ACTIONS (MLX5_FLOW_ACTION_OF_POP_VLAN | \
MLX5_FLOW_ACTION_OF_PUSH_VLAN)
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index ecab424..e277b85 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -1010,6 +1010,125 @@ flow_dv_convert_action_copy_mreg(struct rte_eth_dev *dev,
}
/**
+ * Convert MARK action to DV specification. This routine is used
+ * in extensive metadata only and requires metadata register to be
+ * handled. In legacy mode hardware tag resource is engaged.
+ *
+ * @param[in] dev
+ * Pointer to the rte_eth_dev structure.
+ * @param[in] conf
+ * Pointer to MARK action specification.
+ * @param[in,out] resource
+ * Pointer to the modify-header resource.
+ * @param[out] error
+ * Pointer to the error structure.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_dv_convert_action_mark(struct rte_eth_dev *dev,
+ const struct rte_flow_action_mark *conf,
+ struct mlx5_flow_dv_modify_hdr_resource *resource,
+ struct rte_flow_error *error)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ rte_be32_t mask = rte_cpu_to_be_32(MLX5_FLOW_MARK_MASK &
+ priv->sh->dv_mark_mask);
+ rte_be32_t data = rte_cpu_to_be_32(conf->id) & mask;
+ struct rte_flow_item item = {
+ .spec = &data,
+ .mask = &mask,
+ };
+ struct field_modify_info reg_c_x[] = {
+ {4, 0, 0}, /* dynamic instead of MLX5_MODI_META_REG_C_1. */
+ {0, 0, 0},
+ };
+ enum modify_reg reg;
+
+ if (!mask)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION_CONF,
+ NULL, "zero mark action mask");
+ reg = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
+ if (reg < 0)
+ return reg;
+ assert(reg > 0);
+ reg_c_x[0].id = reg_to_field[reg];
+ return flow_dv_convert_modify_action(&item, reg_c_x, NULL, resource,
+ MLX5_MODIFICATION_TYPE_SET, error);
+}
+
+/**
+ * Validate MARK item.
+ *
+ * @param[in] dev
+ * Pointer to the rte_eth_dev structure.
+ * @param[in] item
+ * Item specification.
+ * @param[in] attr
+ * Attributes of flow that includes this item.
+ * @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_item_mark(struct rte_eth_dev *dev,
+ const struct rte_flow_item *item,
+ const struct rte_flow_attr *attr __rte_unused,
+ struct rte_flow_error *error)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_dev_config *config = &priv->config;
+ const struct rte_flow_item_mark *spec = item->spec;
+ const struct rte_flow_item_mark *mask = item->mask;
+ const struct rte_flow_item_mark nic_mask = {
+ .id = priv->sh->dv_mark_mask,
+ };
+ int ret;
+
+ if (config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY)
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM, item,
+ "extended metadata feature"
+ " isn't enabled");
+ if (!mlx5_flow_ext_mreg_supported(dev))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM, item,
+ "extended metadata register"
+ " isn't supported");
+ if (!nic_mask.id)
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM, item,
+ "extended metadata register"
+ " isn't available");
+ ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
+ if (ret < 0)
+ return ret;
+ if (!spec)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+ item->spec,
+ "data cannot be empty");
+ if (spec->id >= (MLX5_FLOW_MARK_MAX & nic_mask.id))
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION_CONF,
+ &spec->id,
+ "mark id exceeds the limit");
+ if (!mask)
+ mask = &nic_mask;
+ ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
+ (const uint8_t *)&nic_mask,
+ sizeof(struct rte_flow_item_mark),
+ error);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+/**
* Validate META item.
*
* @param[in] dev
@@ -1482,6 +1601,139 @@ flow_dv_validate_action_set_vlan_vid(uint64_t item_flags,
return 0;
}
+/*
+ * Validate the FLAG action.
+ *
+ * @param[in] dev
+ * Pointer to the rte_eth_dev structure.
+ * @param[in] action_flags
+ * Holds the actions detected until now.
+ * @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_flag(struct rte_eth_dev *dev,
+ uint64_t action_flags,
+ const struct rte_flow_attr *attr,
+ struct rte_flow_error *error)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_dev_config *config = &priv->config;
+ int ret;
+
+ /* Fall back if no extended metadata register support. */
+ if (config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY)
+ return mlx5_flow_validate_action_flag(action_flags, attr,
+ error);
+ /* Extensive metadata mode requires registers. */
+ if (!mlx5_flow_ext_mreg_supported(dev))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "no metadata registers "
+ "to support flag action");
+ if (!(priv->sh->dv_mark_mask & MLX5_FLOW_MARK_DEFAULT))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "extended metadata register"
+ " isn't available");
+ ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
+ if (ret < 0)
+ return ret;
+ assert(ret > 0);
+ if (action_flags & MLX5_FLOW_ACTION_DROP)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't drop and flag in same flow");
+ if (action_flags & MLX5_FLOW_ACTION_MARK)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't mark and flag in same flow");
+ if (action_flags & MLX5_FLOW_ACTION_FLAG)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't have 2 flag"
+ " actions in same flow");
+ return 0;
+}
+
+/**
+ * Validate MARK action.
+ *
+ * @param[in] dev
+ * Pointer to the rte_eth_dev structure.
+ * @param[in] action
+ * Pointer to action.
+ * @param[in] action_flags
+ * Holds the actions detected until now.
+ * @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_mark(struct rte_eth_dev *dev,
+ const struct rte_flow_action *action,
+ uint64_t action_flags,
+ const struct rte_flow_attr *attr,
+ struct rte_flow_error *error)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_dev_config *config = &priv->config;
+ const struct rte_flow_action_mark *mark = action->conf;
+ int ret;
+
+ /* Fall back if no extended metadata register support. */
+ if (config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY)
+ return mlx5_flow_validate_action_mark(action, action_flags,
+ attr, error);
+ /* Extensive metadata mode requires registers. */
+ if (!mlx5_flow_ext_mreg_supported(dev))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "no metadata registers "
+ "to support mark action");
+ if (!priv->sh->dv_mark_mask)
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "extended metadata register"
+ " isn't available");
+ ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
+ if (ret < 0)
+ return ret;
+ assert(ret > 0);
+ if (!mark)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, action,
+ "configuration cannot be null");
+ if (mark->id >= (MLX5_FLOW_MARK_MAX & priv->sh->dv_mark_mask))
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION_CONF,
+ &mark->id,
+ "mark id exceeds the limit");
+ if (action_flags & MLX5_FLOW_ACTION_DROP)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't drop and mark in same flow");
+ if (action_flags & MLX5_FLOW_ACTION_FLAG)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't flag and mark in same flow");
+ if (action_flags & MLX5_FLOW_ACTION_MARK)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't have 2 mark actions in same"
+ " flow");
+ return 0;
+}
+
/**
* Validate SET_TAG action.
*
@@ -3750,6 +4002,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
.dst_port = RTE_BE16(UINT16_MAX),
}
};
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_dev_config *dev_conf = &priv->config;
if (items == NULL)
return -1;
@@ -3932,6 +4186,14 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
return ret;
last_item = MLX5_FLOW_LAYER_MPLS;
break;
+
+ case RTE_FLOW_ITEM_TYPE_MARK:
+ ret = flow_dv_validate_item_mark(dev, items, attr,
+ error);
+ if (ret < 0)
+ return ret;
+ last_item = MLX5_FLOW_ITEM_MARK;
+ break;
case RTE_FLOW_ITEM_TYPE_META:
ret = flow_dv_validate_item_meta(dev, items, attr,
error);
@@ -3993,21 +4255,39 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
++actions_n;
break;
case RTE_FLOW_ACTION_TYPE_FLAG:
- ret = mlx5_flow_validate_action_flag(action_flags,
- attr, error);
+ ret = flow_dv_validate_action_flag(dev, action_flags,
+ attr, error);
if (ret < 0)
return ret;
- action_flags |= MLX5_FLOW_ACTION_FLAG;
- ++actions_n;
+ if (dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
+ /* Count all modify-header actions as one. */
+ if (!(action_flags &
+ MLX5_FLOW_MODIFY_HDR_ACTIONS))
+ ++actions_n;
+ action_flags |= MLX5_FLOW_ACTION_FLAG |
+ MLX5_FLOW_ACTION_MARK_EXT;
+ } else {
+ action_flags |= MLX5_FLOW_ACTION_FLAG;
+ ++actions_n;
+ }
break;
case RTE_FLOW_ACTION_TYPE_MARK:
- ret = mlx5_flow_validate_action_mark(actions,
- action_flags,
- attr, error);
+ ret = flow_dv_validate_action_mark(dev, actions,
+ action_flags,
+ attr, error);
if (ret < 0)
return ret;
- action_flags |= MLX5_FLOW_ACTION_MARK;
- ++actions_n;
+ if (dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
+ /* Count all modify-header actions as one. */
+ if (!(action_flags &
+ MLX5_FLOW_MODIFY_HDR_ACTIONS))
+ ++actions_n;
+ action_flags |= MLX5_FLOW_ACTION_MARK |
+ MLX5_FLOW_ACTION_MARK_EXT;
+ } else {
+ action_flags |= MLX5_FLOW_ACTION_MARK;
+ ++actions_n;
+ }
break;
case RTE_FLOW_ACTION_TYPE_SET_TAG:
ret = flow_dv_validate_action_set_tag(dev, actions,
@@ -4278,12 +4558,14 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
" actions in the same rule");
/* Eswitch has few restrictions on using items and actions */
if (attr->transfer) {
- if (action_flags & MLX5_FLOW_ACTION_FLAG)
+ if (!mlx5_flow_ext_mreg_supported(dev) &&
+ action_flags & MLX5_FLOW_ACTION_FLAG)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION,
NULL,
"unsupported action FLAG");
- if (action_flags & MLX5_FLOW_ACTION_MARK)
+ if (!mlx5_flow_ext_mreg_supported(dev) &&
+ action_flags & MLX5_FLOW_ACTION_MARK)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION,
NULL,
@@ -5246,6 +5528,44 @@ flow_dv_match_meta_reg(void *matcher, void *key,
}
/**
+ * Add MARK item to matcher
+ *
+ * @param[in] dev
+ * The device to configure through.
+ * @param[in, out] matcher
+ * Flow matcher.
+ * @param[in, out] key
+ * Flow matcher value.
+ * @param[in] item
+ * Flow pattern to translate.
+ */
+static void
+flow_dv_translate_item_mark(struct rte_eth_dev *dev,
+ void *matcher, void *key,
+ const struct rte_flow_item *item)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ const struct rte_flow_item_mark *mark;
+ uint32_t value;
+ uint32_t mask;
+
+ mark = item->mask ? (const void *)item->mask :
+ &rte_flow_item_mark_mask;
+ mask = mark->id & priv->sh->dv_mark_mask;
+ mark = (const void *)item->spec;
+ assert(mark);
+ value = mark->id & priv->sh->dv_mark_mask & mask;
+ if (mask) {
+ enum modify_reg reg;
+
+ /* Get the metadata register index for the mark. */
+ reg = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, NULL);
+ assert(reg > 0);
+ flow_dv_match_meta_reg(matcher, key, reg, value, mask);
+ }
+}
+
+/**
* Add META item to matcher
*
* @param[in, out] matcher
@@ -5254,8 +5574,6 @@ flow_dv_match_meta_reg(void *matcher, void *key,
* Flow matcher value.
* @param[in] item
* Flow pattern to translate.
- * @param[in] inner
- * Item is inner pattern.
*/
static void
flow_dv_translate_item_meta(void *matcher, void *key,
@@ -5926,6 +6244,7 @@ __flow_dv_translate(struct rte_eth_dev *dev,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_dev_config *dev_conf = &priv->config;
struct rte_flow *flow = dev_flow->flow;
uint64_t item_flags = 0;
uint64_t last_item = 0;
@@ -5960,7 +6279,7 @@ __flow_dv_translate(struct rte_eth_dev *dev,
if (attr->transfer)
mhdr_res.ft_type = MLX5DV_FLOW_TABLE_TYPE_FDB;
if (priority == MLX5_FLOW_PRIO_RSVD)
- priority = priv->config.flow_prio - 1;
+ priority = dev_conf->flow_prio - 1;
for (; !actions_end ; actions++) {
const struct rte_flow_action_queue *queue;
const struct rte_flow_action_rss *rss;
@@ -5991,6 +6310,19 @@ __flow_dv_translate(struct rte_eth_dev *dev,
action_flags |= MLX5_FLOW_ACTION_PORT_ID;
break;
case RTE_FLOW_ACTION_TYPE_FLAG:
+ action_flags |= MLX5_FLOW_ACTION_FLAG;
+ if (dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
+ struct rte_flow_action_mark mark = {
+ .id = MLX5_FLOW_MARK_DEFAULT,
+ };
+
+ if (flow_dv_convert_action_mark(dev, &mark,
+ &mhdr_res,
+ error))
+ return -rte_errno;
+ action_flags |= MLX5_FLOW_ACTION_MARK_EXT;
+ break;
+ }
tag_resource.tag =
mlx5_flow_mark_set(MLX5_FLOW_MARK_DEFAULT);
if (!dev_flow->dv.tag_resource)
@@ -5999,9 +6331,22 @@ __flow_dv_translate(struct rte_eth_dev *dev,
return errno;
dev_flow->dv.actions[actions_n++] =
dev_flow->dv.tag_resource->action;
- action_flags |= MLX5_FLOW_ACTION_FLAG;
break;
case RTE_FLOW_ACTION_TYPE_MARK:
+ action_flags |= MLX5_FLOW_ACTION_MARK;
+ if (dev_conf->dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
+ const struct rte_flow_action_mark *mark =
+ (const struct rte_flow_action_mark *)
+ actions->conf;
+
+ if (flow_dv_convert_action_mark(dev, mark,
+ &mhdr_res,
+ error))
+ return -rte_errno;
+ action_flags |= MLX5_FLOW_ACTION_MARK_EXT;
+ break;
+ }
+ /* Legacy (non-extensive) MARK action. */
tag_resource.tag = mlx5_flow_mark_set
(((const struct rte_flow_action_mark *)
(actions->conf))->id);
@@ -6011,7 +6356,6 @@ __flow_dv_translate(struct rte_eth_dev *dev,
return errno;
dev_flow->dv.actions[actions_n++] =
dev_flow->dv.tag_resource->action;
- action_flags |= MLX5_FLOW_ACTION_MARK;
break;
case RTE_FLOW_ACTION_TYPE_SET_TAG:
if (flow_dv_convert_action_set_tag
@@ -6048,7 +6392,7 @@ __flow_dv_translate(struct rte_eth_dev *dev,
action_flags |= MLX5_FLOW_ACTION_RSS;
break;
case RTE_FLOW_ACTION_TYPE_COUNT:
- if (!priv->config.devx) {
+ if (!dev_conf->devx) {
rte_errno = ENOTSUP;
goto cnt_err;
}
@@ -6461,6 +6805,11 @@ cnt_err:
items, last_item, tunnel);
last_item = MLX5_FLOW_LAYER_MPLS;
break;
+ case RTE_FLOW_ITEM_TYPE_MARK:
+ flow_dv_translate_item_mark(dev, match_mask,
+ match_value, items);
+ last_item = MLX5_FLOW_ITEM_MARK;
+ break;
case RTE_FLOW_ITEM_TYPE_META:
flow_dv_translate_item_meta(match_mask, match_value,
items);