void *reserved_ptrs[2]; /**< Reserved for future fields */
};
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice.
+ *
+ * A structure used to configure an Rx packet segment to split.
+ *
+ * If RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT flag is set in offloads field,
+ * the PMD will split the received packets into multiple segments
+ * according to the specification in the description array:
+ *
+ * - The first network buffer will be allocated from the memory pool,
+ * specified in the first array element, the second buffer, from the
+ * pool in the second element, and so on.
+ *
+ * - The offsets from the segment description elements specify
+ * the data offset from the buffer beginning except the first mbuf.
+ * The first segment offset is added with RTE_PKTMBUF_HEADROOM.
+ *
+ * - The lengths in the elements define the maximal data amount
+ * being received to each segment. The receiving starts with filling
+ * up the first mbuf data buffer up to specified length. If the
+ * there are data remaining (packet is longer than buffer in the first
+ * mbuf) the following data will be pushed to the next segment
+ * up to its own length, and so on.
+ *
+ * - If the length in the segment description element is zero
+ * the actual buffer size will be deduced from the appropriate
+ * memory pool properties.
+ *
+ * - If there is not enough elements to describe the buffer for entire
+ * packet of maximal length the following parameters will be used
+ * for the all remaining segments:
+ * - pool from the last valid element
+ * - the buffer size from this pool
+ * - zero offset
+ */
+struct rte_eth_rxseg_split {
+ struct rte_mempool *mp; /**< Memory pool to allocate segment from. */
+ uint16_t length; /**< Segment data length, configures split point. */
+ uint16_t offset; /**< Data offset from beginning of mbuf data buffer. */
+ uint32_t reserved; /**< Reserved field. */
+};
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice.
+ *
+ * A common structure used to describe Rx packet segment properties.
+ */
+union rte_eth_rxseg {
+ /* The settings for buffer split offload. */
+ struct rte_eth_rxseg_split split;
+ /* The other features settings should be added here. */
+};
+
/**
* A structure used to configure an RX ring of an Ethernet port.
*/
uint16_t rx_free_thresh; /**< Drives the freeing of RX descriptors. */
uint8_t rx_drop_en; /**< Drop packets if no descriptors are available. */
uint8_t rx_deferred_start; /**< Do not start queue with rte_eth_dev_start(). */
+ uint16_t rx_nseg; /**< Number of descriptions in rx_seg array. */
/**
* Per-queue Rx offloads to be set using DEV_RX_OFFLOAD_* flags.
* Only offloads set on rx_queue_offload_capa or rx_offload_capa
* fields on rte_eth_dev_info structure are allowed to be set.
*/
uint64_t offloads;
+ /**
+ * Points to the array of segment descriptions for an entire packet.
+ * Array elements are properties for consecutive Rx segments.
+ *
+ * The supported capabilities of receiving segmentation is reported
+ * in rte_eth_dev_info.rx_seg_capa field.
+ */
+ union rte_eth_rxseg *rx_seg;
uint64_t reserved_64s[2]; /**< Reserved for future fields */
void *reserved_ptrs[2]; /**< Reserved for future fields */
#define DEV_RX_OFFLOAD_SCTP_CKSUM 0x00020000
#define DEV_RX_OFFLOAD_OUTER_UDP_CKSUM 0x00040000
#define DEV_RX_OFFLOAD_RSS_HASH 0x00080000
+#define RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT 0x00100000
#define DEV_RX_OFFLOAD_CHECKSUM (DEV_RX_OFFLOAD_IPV4_CKSUM | \
DEV_RX_OFFLOAD_UDP_CKSUM | \
*/
};
+/**
+ * @warning
+ * @b EXPERIMENTAL: this structure may change without prior notice.
+ *
+ * Ethernet device Rx buffer segmentation capabilities.
+ */
+struct rte_eth_rxseg_capa {
+ __extension__
+ uint32_t multi_pools:1; /**< Supports receiving to multiple pools.*/
+ uint32_t offset_allowed:1; /**< Supports buffer offsets. */
+ uint32_t offset_align_log2:4; /**< Required offset alignment. */
+ uint16_t max_nseg; /**< Maximum amount of segments to split. */
+ uint16_t reserved; /**< Reserved field. */
+};
+
/**
* Ethernet device information
*/
/** Maximum number of hash MAC addresses for MTA and UTA. */
uint16_t max_vfs; /**< Maximum number of VFs. */
uint16_t max_vmdq_pools; /**< Maximum number of VMDq pools. */
+ struct rte_eth_rxseg_capa rx_seg_capa; /**< Segmentation capability.*/
uint64_t rx_offload_capa;
/**< All RX offload capabilities including all per-queue ones */
uint64_t tx_offload_capa;
#define RTE_ETH_DEV_REPRESENTOR 0x0010
/** Device does not support MAC change after started */
#define RTE_ETH_DEV_NOLIVE_MAC_ADDR 0x0020
+/**
+ * Queue xstats filled automatically by ethdev layer.
+ * PMDs filling the queue xstats themselves should not set this flag
+ */
+#define RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS 0x0040
/**
* Iterates over valid ethdev ports owned by a specific owner.
* No need to repeat any bit in rx_conf->offloads which has already been
* enabled in rte_eth_dev_configure() at port level. An offloading enabled
* at port level can't be disabled at queue level.
+ * The configuration structure also contains the pointer to the array
+ * of the receiving buffer segment descriptions, see rx_seg and rx_nseg
+ * fields, this extended configuration might be used by split offloads like
+ * RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT. If mp_pool is not NULL,
+ * the extended configuration fields must be set to NULL and zero.
* @param mb_pool
* The pointer to the memory pool from which to allocate *rte_mbuf* network
- * memory buffers to populate each descriptor of the receive ring.
+ * memory buffers to populate each descriptor of the receive ring. There are
+ * two options to provide Rx buffer configuration:
+ * - single pool:
+ * mb_pool is not NULL, rx_conf.rx_nseg is 0.
+ * - multiple segments description:
+ * mb_pool is NULL, rx_conf.rx_seg is not NULL, rx_conf.rx_nseg is not 0.
+ * Taken only if flag RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT is set in offloads.
+ *
* @return
* - 0: Success, receive queue correctly set up.
* - -EIO: if device is removed.
(uint16_t port_id, uint16_t tx_queue_id, uint16_t nb_tx_desc,
const struct rte_eth_hairpin_conf *conf);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change, or be removed, without prior notice
+ *
+ * Get all the hairpin peer Rx / Tx ports of the current port.
+ * The caller should ensure that the array is large enough to save the ports
+ * list.
+ *
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ * @param peer_ports
+ * Pointer to the array to store the peer ports list.
+ * @param len
+ * Length of the array to store the port identifiers.
+ * @param direction
+ * Current port to peer port direction
+ * positive - current used as Tx to get all peer Rx ports.
+ * zero - current used as Rx to get all peer Tx ports.
+ *
+ * @return
+ * - (0 or positive) actual peer ports number.
+ * - (-EINVAL) if bad parameter.
+ * - (-ENODEV) if *port_id* invalid
+ * - (-ENOTSUP) if hardware doesn't support.
+ * - Others detailed errors from PMD drivers.
+ */
+__rte_experimental
+int rte_eth_hairpin_get_peer_ports(uint16_t port_id, uint16_t *peer_ports,
+ size_t len, uint32_t direction);
+
/**
* @warning
* @b EXPERIMENTAL: this API may change, or be removed, without prior notice
*
* @param port_id
* The port identifier of the Ethernet device.
+ * @return
+ * - 0: Success, Ethernet device stopped.
+ * - <0: Error code of the driver device stop function.
*/
-void rte_eth_dev_stop(uint16_t port_id);
+int rte_eth_dev_stop(uint16_t port_id);
/**
* Link up an Ethernet device.
*
* @param port_id
* The port identifier of the Ethernet device.
+ * @return
+ * - Zero if the port is closed successfully.
+ * - Negative if something went wrong.
*/
-void rte_eth_dev_close(uint16_t port_id);
+int rte_eth_dev_close(uint16_t port_id);
/**
* Reset a Ethernet device and keep its port id.
git.droids-corp.org / dpdk.git / blobdiff