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Diffstat (limited to 'src/dpdk_lib18/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h')
| -rwxr-xr-x | src/dpdk_lib18/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/dpdk_lib18/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h b/src/dpdk_lib18/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h new file mode 100755 index 00000000..1e55c2d9 --- /dev/null +++ b/src/dpdk_lib18/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h @@ -0,0 +1,174 @@ +/*- + * This file is provided under a dual BSD/LGPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GNU LESSER GENERAL PUBLIC LICENSE + * + * Copyright(c) 2007-2014 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2.1 of the GNU Lesser General Public License + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + * Contact Information: + * Intel Corporation + * + * + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef _RTE_KNI_COMMON_H_ +#define _RTE_KNI_COMMON_H_ + +#ifdef __KERNEL__ +#include <linux/if.h> +#endif + +/** + * KNI name is part of memzone name. + */ +#define RTE_KNI_NAMESIZE 32 + +#ifndef RTE_CACHE_LINE_SIZE +#define RTE_CACHE_LINE_SIZE 64 /**< Cache line size. */ +#endif + +/* + * 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_MAX, +}; + +/* + * Structure for KNI request. + */ +struct rte_kni_request { + uint32_t req_id; /**< Request id */ + union { + uint32_t new_mtu; /**< New MTU */ + uint8_t if_up; /**< 1: interface up, 0: interface down */ + }; + 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 { + volatile unsigned write; /**< Next position to be written*/ + volatile unsigned read; /**< Next position to be read */ + unsigned len; /**< Circular buffer length */ + unsigned elem_size; /**< Pointer size - for 32/64 bit OS */ + void * volatile buffer[0]; /**< 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))); + char pad0[10]; + uint16_t data_off; /**< Start address of data in segment buffer. */ + char pad1[4]; + uint64_t ol_flags; /**< Offload features. */ + char pad2[2]; + uint16_t data_len; /**< Amount of data in segment buffer. */ + uint32_t pkt_len; /**< Total pkt len: sum of all segment data_len. */ + + /* fields on second cache line */ + char pad3[8] __attribute__((__aligned__(RTE_CACHE_LINE_SIZE))); + void *pool; + void *next; +}; + +/* + * 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; + + /* PCI info */ + uint16_t vendor_id; /**< Vendor ID or PCI_ANY_ID. */ + uint16_t device_id; /**< Device ID or PCI_ANY_ID. */ + uint8_t bus; /**< Device bus */ + uint8_t devid; /**< Device ID */ + uint8_t function; /**< Device function. */ + + uint16_t group_id; /**< Group ID */ + uint32_t core_id; /**< core ID to bind for kernel thread */ + + uint8_t force_bind : 1; /**< Flag for kernel thread binding */ + + /* mbuf size */ + unsigned mbuf_size; +}; + +#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_ */ |