update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / spdk / dpdk / lib / librte_eal / linux / include / rte_kni_common.h

diff --git a/ceph/src/spdk/dpdk/lib/librte_eal/linux/include/rte_kni_common.h b/ceph/src/spdk/dpdk/lib/librte_eal/linux/include/rte_kni_common.h
new file mode 100644 (file)
index 0000000..7313ef5
--- /dev/null
+++ b/ceph/src/spdk/dpdk/lib/librte_eal/linux/include/rte_kni_common.h
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: (BSD-3-Clause OR LGPL-2.1) */
+/*
+ * Copyright(c) 2007-2014 Intel Corporation.
+ */
+
+#ifndef _RTE_KNI_COMMON_H_
+#define _RTE_KNI_COMMON_H_
+
+#ifdef __KERNEL__
+#include <linux/if.h>
+#include <asm/barrier.h>
+#define RTE_STD_C11
+#else
+#include <rte_common.h>
+#include <rte_config.h>
+#endif
+
+/*
+ * KNI name is part of memzone name. Must not exceed IFNAMSIZ.
+ */
+#define RTE_KNI_NAMESIZE 16
+
+#define RTE_CACHE_LINE_MIN_SIZE 64
+
+/*
+ * Request id.
+ */
+enum rte_kni_req_id {
+       RTE_KNI_REQ_UNKNOWN = 0,
+       RTE_KNI_REQ_CHANGE_MTU,
+       RTE_KNI_REQ_CFG_NETWORK_IF,
+       RTE_KNI_REQ_CHANGE_MAC_ADDR,
+       RTE_KNI_REQ_CHANGE_PROMISC,
+       RTE_KNI_REQ_CHANGE_ALLMULTI,
+       RTE_KNI_REQ_MAX,
+};
+
+/*
+ * Structure for KNI request.
+ */
+struct rte_kni_request {
+       uint32_t req_id;             /**< Request id */
+       RTE_STD_C11
+       union {
+               uint32_t new_mtu;    /**< New MTU */
+               uint8_t if_up;       /**< 1: interface up, 0: interface down */
+               uint8_t mac_addr[6]; /**< MAC address for interface */
+               uint8_t promiscusity;/**< 1: promisc mode enable, 0: disable */
+               uint8_t allmulti;    /**< 1: all-multicast mode enable, 0: disable */
+       };
+       int32_t result;               /**< Result for processing request */
+} __attribute__((__packed__));
+
+/*
+ * Fifo struct mapped in a shared memory. It describes a circular buffer FIFO
+ * Write and read should wrap around. Fifo is empty when write == read
+ * Writing should never overwrite the read position
+ */
+struct rte_kni_fifo {
+#ifdef RTE_USE_C11_MEM_MODEL
+       unsigned write;              /**< Next position to be written*/
+       unsigned read;               /**< Next position to be read */
+#else
+       volatile unsigned write;     /**< Next position to be written*/
+       volatile unsigned read;      /**< Next position to be read */
+#endif
+       unsigned len;                /**< Circular buffer length */
+       unsigned elem_size;          /**< Pointer size - for 32/64 bit OS */
+       void *volatile buffer[];     /**< The buffer contains mbuf pointers */
+};
+
+/*
+ * The kernel image of the rte_mbuf struct, with only the relevant fields.
+ * Padding is necessary to assure the offsets of these fields
+ */
+struct rte_kni_mbuf {
+       void *buf_addr __attribute__((__aligned__(RTE_CACHE_LINE_SIZE)));
+       uint64_t buf_physaddr;
+       uint16_t data_off;      /**< Start address of data in segment buffer. */
+       char pad1[2];
+       uint16_t nb_segs;       /**< Number of segments. */
+       char pad4[2];
+       uint64_t ol_flags;      /**< Offload features. */
+       char pad2[4];
+       uint32_t pkt_len;       /**< Total pkt len: sum of all segment data_len. */
+       uint16_t data_len;      /**< Amount of data in segment buffer. */
+
+       /* fields on second cache line */
+       char pad3[8] __attribute__((__aligned__(RTE_CACHE_LINE_MIN_SIZE)));
+       void *pool;
+       void *next;             /**< Physical address of next mbuf in kernel. */
+};
+
+/*
+ * Struct used to create a KNI device. Passed to the kernel in IOCTL call
+ */
+
+struct rte_kni_device_info {
+       char name[RTE_KNI_NAMESIZE];  /**< Network device name for KNI */
+
+       phys_addr_t tx_phys;
+       phys_addr_t rx_phys;
+       phys_addr_t alloc_phys;
+       phys_addr_t free_phys;
+
+       /* Used by Ethtool */
+       phys_addr_t req_phys;
+       phys_addr_t resp_phys;
+       phys_addr_t sync_phys;
+       void * sync_va;
+
+       /* mbuf mempool */
+       void * mbuf_va;
+       phys_addr_t mbuf_phys;
+
+       uint16_t group_id;            /**< Group ID */
+       uint32_t core_id;             /**< core ID to bind for kernel thread */
+
+       __extension__
+       uint8_t force_bind : 1;       /**< Flag for kernel thread binding */
+
+       /* mbuf size */
+       unsigned mbuf_size;
+       unsigned int mtu;
+       unsigned int min_mtu;
+       unsigned int max_mtu;
+       uint8_t mac_addr[6];
+       uint8_t iova_mode;
+};
+
+#define KNI_DEVICE "kni"
+
+#define RTE_KNI_IOCTL_TEST    _IOWR(0, 1, int)
+#define RTE_KNI_IOCTL_CREATE  _IOWR(0, 2, struct rte_kni_device_info)
+#define RTE_KNI_IOCTL_RELEASE _IOWR(0, 3, struct rte_kni_device_info)
+
+#endif /* _RTE_KNI_COMMON_H_ */