return sz;
}
+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;
+}
+
/** Generate flow_item[] entry. */
#define MK_FLOW_ITEM(t, s) \
[RTE_FLOW_ITEM_TYPE_ ## t] = { \
MK_FLOW_ITEM(CONNTRACK, sizeof(uint32_t)),
MK_FLOW_ITEM(PORT_REPRESENTOR, sizeof(struct rte_flow_item_ethdev)),
MK_FLOW_ITEM(REPRESENTED_PORT, sizeof(struct rte_flow_item_ethdev)),
+ MK_FLOW_ITEM_FN(FLEX, sizeof(struct rte_flow_item_flex),
+ rte_flow_item_flex_conv),
};
/** Generate flow_action[] entry. */
ops->pick_transfer_proxy(dev, proxy_port_id, error),
error);
}
+
+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);
+}
* @see struct rte_flow_item_ethdev
*/
RTE_FLOW_ITEM_TYPE_REPRESENTED_PORT,
+
+ /**
+ * Matches a configured set of fields at runtime calculated offsets
+ * over the generic network header with variable length and
+ * flexible pattern
+ *
+ * @see struct rte_flow_item_flex.
+ */
+ RTE_FLOW_ITEM_TYPE_FLEX,
};
/**
const void *mask; /**< Bit-mask applied to spec and last. */
};
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ *
+ * RTE_FLOW_ITEM_TYPE_FLEX
+ *
+ * Matches a specified set of fields within the network protocol
+ * header. Each field is presented as set of bits with specified width, and
+ * bit offset from the header beginning.
+ *
+ * The pattern is concatenation of bit fields configured at item creation
+ * by rte_flow_flex_item_create(). At configuration the fields are presented
+ * by sample_data array.
+ *
+ * This type does not support ranges (struct rte_flow_item.last).
+ */
+struct rte_flow_item_flex {
+ struct rte_flow_item_flex_handle *handle; /**< Opaque item handle. */
+ uint32_t length; /**< Pattern length in bytes. */
+ const uint8_t *pattern; /**< Combined bitfields pattern to match. */
+};
+/**
+ * Field bit offset calculation mode.
+ */
+enum rte_flow_item_flex_field_mode {
+ /**
+ * Dummy field, used for byte boundary alignment in pattern.
+ * Pattern mask and data are ignored in the match. All configuration
+ * parameters besides field size are ignored.
+ */
+ FIELD_MODE_DUMMY = 0,
+ /**
+ * Fixed offset field. The bit offset from header beginning
+ * is permanent and defined by field_base parameter.
+ */
+ FIELD_MODE_FIXED,
+ /**
+ * The field bit offset is extracted from other header field (indirect
+ * offset field). The resulting field offset to match is calculated as:
+ *
+ * field_base + (*offset_base & offset_mask) << offset_shift
+ */
+ FIELD_MODE_OFFSET,
+ /**
+ * The field bit offset is extracted from other header field (indirect
+ * offset field), the latter is considered as bitmask containing some
+ * number of one bits, the resulting field offset to match is
+ * calculated as:
+ *
+ * field_base + bitcount(*offset_base & offset_mask) << offset_shift
+ */
+ FIELD_MODE_BITMASK,
+};
+
+/**
+ * Flex item field tunnel mode
+ */
+enum rte_flow_item_flex_tunnel_mode {
+ /**
+ * The protocol header can be present in the packet only once.
+ * No multiple flex item flow inclusions (for inner/outer) are allowed.
+ * No any relations with tunnel protocols are imposed. The drivers
+ * can optimize hardware resource usage to handle match on single flex
+ * item of specific type.
+ */
+ FLEX_TUNNEL_MODE_SINGLE = 0,
+ /**
+ * Flex item presents outer header only.
+ */
+ FLEX_TUNNEL_MODE_OUTER,
+ /**
+ * Flex item presents inner header only.
+ */
+ FLEX_TUNNEL_MODE_INNER,
+ /**
+ * Flex item presents either inner or outer header. The driver
+ * handles as many multiple inners as hardware supports.
+ */
+ FLEX_TUNNEL_MODE_MULTI,
+ /**
+ * Flex item presents tunnel protocol header.
+ */
+ FLEX_TUNNEL_MODE_TUNNEL,
+};
+
+/**
+ *
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ */
+__extension__
+struct rte_flow_item_flex_field {
+ /** Defines how match field offset is calculated over the packet. */
+ enum rte_flow_item_flex_field_mode field_mode;
+ uint32_t field_size; /**< Field size in bits. */
+ int32_t field_base; /**< Field offset in bits. */
+ uint32_t offset_base; /**< Indirect offset field offset in bits. */
+ uint32_t offset_mask; /**< Indirect offset field bit mask. */
+ int32_t offset_shift; /**< Indirect offset multiply factor. */
+ uint32_t field_id:16; /**< Device hint, for multiple items in flow. */
+ uint32_t reserved:16; /**< Reserved field. */
+};
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ */
+struct rte_flow_item_flex_link {
+ /**
+ * Preceding/following header. The item type must be always provided.
+ * For preceding one item must specify the header value/mask to match
+ * for the link be taken and start the flex item header parsing.
+ */
+ struct rte_flow_item item;
+ /**
+ * Next field value to match to continue with one of the configured
+ * next protocols.
+ */
+ uint32_t next;
+};
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice
+ */
+struct rte_flow_item_flex_conf {
+ /**
+ * Specifies the flex item and tunnel relations and tells the PMD
+ * whether flex item can be used for inner, outer or both headers,
+ * or whether flex item presents the tunnel protocol itself.
+ */
+ enum rte_flow_item_flex_tunnel_mode tunnel;
+ /**
+ * The next header offset, it presents the network header size covered
+ * by the flex item and can be obtained with all supported offset
+ * calculating methods (fixed, dedicated field, bitmask, etc).
+ */
+ struct rte_flow_item_flex_field next_header;
+ /**
+ * Specifies the next protocol field to match with link next protocol
+ * values and continue packet parsing with matching link.
+ */
+ struct rte_flow_item_flex_field next_protocol;
+ /**
+ * The fields will be sampled and presented for explicit match
+ * with pattern in the rte_flow_flex_item. There can be multiple
+ * fields descriptors, the number should be specified by nb_samples.
+ */
+ struct rte_flow_item_flex_field *sample_data;
+ /** Number of field descriptors in the sample_data array. */
+ uint32_t nb_samples;
+ /**
+ * Input link defines the flex item relation with preceding
+ * header. It specified the preceding item type and provides pattern
+ * to match. The flex item will continue parsing and will provide the
+ * data to flow match in case if there is the match with one of input
+ * links.
+ */
+ struct rte_flow_item_flex_link *input_link;
+ /** Number of link descriptors in the input link array. */
+ uint32_t nb_inputs;
+ /**
+ * Output link defines the next protocol field value to match and
+ * the following protocol header to continue packet parsing. Also
+ * defines the tunnel-related behaviour.
+ */
+ struct rte_flow_item_flex_link *output_link;
+ /** Number of link descriptors in the output link array. */
+ uint32_t nb_outputs;
+};
+
/**
* Action types.
*
int
rte_flow_pick_transfer_proxy(uint16_t port_id, uint16_t *proxy_port_id,
struct rte_flow_error *error);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Create the flex item with specified configuration over
+ * the Ethernet device.
+ *
+ * @param port_id
+ * Port identifier of Ethernet device.
+ * @param[in] conf
+ * Item configuration.
+ * @param[out] error
+ * Perform verbose error reporting if not NULL. PMDs initialize this
+ * structure in case of error only.
+ *
+ * @return
+ * Non-NULL opaque pointer on success, NULL otherwise and rte_errno is set.
+ */
+__rte_experimental
+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);
+
+/**
+ * Release the flex item on the specified Ethernet device.
+ *
+ * @param port_id
+ * Port identifier of Ethernet device.
+ * @param[in] handle
+ * Handle of the item existing on the specified device.
+ * @param[out] error
+ * Perform verbose error reporting if not NULL. PMDs initialize this
+ * structure in case of error only.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+__rte_experimental
+int
+rte_flow_flex_item_release(uint16_t port_id,
+ const struct rte_flow_item_flex_handle *handle,
+ struct rte_flow_error *error);
+
#ifdef __cplusplus
}
#endif
git.droids-corp.org / dpdk.git / commitdiff