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From: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
To: <dev@dpdk.org>
CC: <rasland@nvidia.com>, <matan@nvidia.com>, <shahafs@nvidia.com>,
<orika@nvidia.com>, <getelson@nvidia.com>, <thomas@monjalon.net>
Date: Wed, 22 Sep 2021 21:04:18 +0300
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Subject: [dpdk-dev] [PATCH 3/3] ethdev: implement RTE flex item API
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From: Gregory Etelson <getelson@nvidia.com>
RTE flex item API was introduced in
"ethdev: introduce configurable flexible item" patch.
The API allows DPDK application to define parser for custom
network header in port hardware and offload flows that will match
the custom header elements.
Signed-off-by: Gregory Etelson <getelson@nvidia.com>
---
lib/ethdev/rte_flow.c | 73 ++++++++++++++++++++++++++++++++++++
lib/ethdev/rte_flow_driver.h | 13 +++++++
lib/ethdev/version.map | 5 +++
3 files changed, 91 insertions(+)
diff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c
index fe199eaeb3..74f74d6009 100644
--- a/lib/ethdev/rte_flow.c
+++ b/lib/ethdev/rte_flow.c
@@ -80,6 +80,19 @@ rte_flow_conv_copy(void *buf, const void *data, const size_t size,
.desc_fn = fn, \
}
+static size_t
+rte_flow_item_flex_conv(void *buf, const void *data)
+{
+ struct rte_flow_item_flex *dst = buf;
+ const struct rte_flow_item_flex *src = data;
+ if (buf) {
+ dst->pattern = rte_memcpy
+ ((void *)((uintptr_t)(dst + 1)), src->pattern,
+ src->length);
+ }
+ return src->length;
+}
+
/** Information about known flow pattern items. */
static const struct rte_flow_desc_data rte_flow_desc_item[] = {
MK_FLOW_ITEM(END, 0),
@@ -141,6 +154,8 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = {
MK_FLOW_ITEM(GENEVE_OPT, sizeof(struct rte_flow_item_geneve_opt)),
MK_FLOW_ITEM(INTEGRITY, sizeof(struct rte_flow_item_integrity)),
MK_FLOW_ITEM(CONNTRACK, sizeof(uint32_t)),
+ MK_FLOW_ITEM_FN(FLEX, sizeof(struct rte_flow_item_flex),
+ rte_flow_item_flex_conv),
};
/** Generate flow_action[] entry. */
@@ -1308,3 +1323,61 @@ rte_flow_tunnel_item_release(uint16_t port_id,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, rte_strerror(ENOTSUP));
}
+
+struct rte_flow_item_flex_handle *
+rte_flow_flex_item_create(uint16_t port_id,
+ const struct rte_flow_item_flex_conf *conf,
+ struct rte_flow_error *error)
+{
+ struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+ const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+ struct rte_flow_item_flex_handle *handle;
+
+ if (unlikely(!ops))
+ return NULL;
+ if (unlikely(!ops->flex_item_create)) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+ NULL, rte_strerror(ENOTSUP));
+ return NULL;
+ }
+ handle = ops->flex_item_create(dev, conf, error);
+ if (handle == NULL)
+ flow_err(port_id, -rte_errno, error);
+ return handle;
+}
+
+int
+rte_flow_flex_item_release(uint16_t port_id,
+ const struct rte_flow_item_flex_handle *handle,
+ struct rte_flow_error *error)
+{
+ int ret;
+ struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+ const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+
+ if (unlikely(!ops || !ops->flex_item_release))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+ NULL, rte_strerror(ENOTSUP));
+ ret = ops->flex_item_release(dev, handle, error);
+ return flow_err(port_id, ret, error);
+}
+
+int
+rte_flow_flex_item_update(uint16_t port_id,
+ const struct rte_flow_item_flex_handle *handle,
+ const struct rte_flow_item_flex_conf *conf,
+ struct rte_flow_error *error)
+{
+ int ret;
+ struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+ const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+
+ if (unlikely(!ops || !ops->flex_item_update))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+ NULL, rte_strerror(ENOTSUP));
+ ret = ops->flex_item_update(dev, handle, conf, error);
+ return flow_err(port_id, ret, error);
+}
diff --git a/lib/ethdev/rte_flow_driver.h b/lib/ethdev/rte_flow_driver.h
index 46f62c2ec2..aed2ac03ad 100644
--- a/lib/ethdev/rte_flow_driver.h
+++ b/lib/ethdev/rte_flow_driver.h
@@ -139,6 +139,19 @@ struct rte_flow_ops {
struct rte_flow_item *pmd_items,
uint32_t num_of_items,
struct rte_flow_error *err);
+ struct rte_flow_item_flex_handle *(*flex_item_create)
+ (struct rte_eth_dev *dev,
+ const struct rte_flow_item_flex_conf *conf,
+ struct rte_flow_error *error);
+ int (*flex_item_release)
+ (struct rte_eth_dev *dev,
+ const struct rte_flow_item_flex_handle *handle,
+ struct rte_flow_error *error);
+ int (*flex_item_update)
+ (struct rte_eth_dev *dev,
+ const struct rte_flow_item_flex_handle *handle,
+ const struct rte_flow_item_flex_conf *conf,
+ struct rte_flow_error *error);
};
/**
diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map
index 904bce6ea1..994c57f4b2 100644
--- a/lib/ethdev/version.map
+++ b/lib/ethdev/version.map
@@ -247,6 +247,11 @@ EXPERIMENTAL {
rte_mtr_meter_policy_delete;
rte_mtr_meter_policy_update;
rte_mtr_meter_policy_validate;
+
+ # added in 21.11
+ rte_flow_flex_item_create;
+ rte_flow_flex_item_release;
+ rte_flow_flex_item_update;
};
INTERNAL {
--
2.18.1