278f945402
The librte_pdump library provides a framework for packet capturing in dpdk. The library provides set of APIs to initialize the packet capture framework, to enable or disable the packet capture, and to uninitialize it. The librte_pdump library works on a client/server model. The server is responsible for enabling or disabling the packet capture and the clients are responsible for requesting the enabling or disabling of the packet capture. Enabling APIs are supported with port, queue, ring and mempool parameters. Applications should pass on this information to get the packets from the dpdk ports. For enabling requests from applications, library creates the client request containing the mempool, ring, port and queue information and sends the request to the server. After receiving the request, server registers the Rx and Tx callbacks for all the port and queues. After the callbacks registration, registered callbacks will get the Rx and Tx packets. Packets then will be copied to the new mbufs that are allocated from the user passed mempool. These new mbufs then will be enqueued to the application passed ring. Applications need to dequeue the mbufs from the rings and direct them to the devices like pcap vdev for viewing the packets outside of the dpdk using the packet capture tools. For disabling requests, library creates the client request containing the port and queue information and sends the request to the server. After receiving the request, server removes the Rx and Tx callback for all the port and queues. Signed-off-by: Reshma Pattan <reshma.pattan@intel.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
217 lines
6.7 KiB
C
217 lines
6.7 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2016 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RTE_PDUMP_H_
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#define _RTE_PDUMP_H_
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/**
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* @file
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* RTE pdump
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*
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* packet dump library to provide packet capturing support on dpdk.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define RTE_PDUMP_ALL_QUEUES UINT16_MAX
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enum {
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RTE_PDUMP_FLAG_RX = 1, /* receive direction */
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RTE_PDUMP_FLAG_TX = 2, /* transmit direction */
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/* both receive and transmit directions */
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RTE_PDUMP_FLAG_RXTX = (RTE_PDUMP_FLAG_RX|RTE_PDUMP_FLAG_TX)
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};
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enum rte_pdump_socktype {
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RTE_PDUMP_SOCKET_SERVER = 1,
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RTE_PDUMP_SOCKET_CLIENT = 2
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};
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/**
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* Initialize packet capturing handling
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*
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* Creates pthread and server socket for handling clients
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* requests to enable/disable rxtx callbacks.
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*
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* @param path
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* directory path for server socket.
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*
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* @return
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* 0 on success, -1 on error
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*/
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int
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rte_pdump_init(const char *path);
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/**
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* Un initialize packet capturing handling
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*
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* Cancels pthread, close server socket, removes server socket address.
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*
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* @return
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* 0 on success, -1 on error
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*/
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int
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rte_pdump_uninit(void);
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/**
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* Enables packet capturing on given port and queue.
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*
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* @param port
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* port on which packet capturing should be enabled.
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* @param queue
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* queue of a given port on which packet capturing should be enabled.
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* users should pass on value UINT16_MAX to enable packet capturing on all
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* queues of a given port.
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* @param flags
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* flags specifies RTE_PDUMP_FLAG_RX/RTE_PDUMP_FLAG_TX/RTE_PDUMP_FLAG_RXTX
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* on which packet capturing should be enabled for a given port and queue.
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* @param ring
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* ring on which captured packets will be enqueued for user.
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* @param mp
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* mempool on to which original packets will be mirrored or duplicated.
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* @param filter
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* place holder for packet filtering.
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*
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* @return
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* 0 on success, -1 on error, rte_errno is set accordingly.
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*/
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int
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rte_pdump_enable(uint8_t port, uint16_t queue, uint32_t flags,
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struct rte_ring *ring,
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struct rte_mempool *mp,
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void *filter);
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/**
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* Disables packet capturing on given port and queue.
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*
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* @param port
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* port on which packet capturing should be disabled.
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* @param queue
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* queue of a given port on which packet capturing should be disabled.
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* users should pass on value UINT16_MAX to disable packet capturing on all
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* queues of a given port.
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* @param flags
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* flags specifies RTE_PDUMP_FLAG_RX/RTE_PDUMP_FLAG_TX/RTE_PDUMP_FLAG_RXTX
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* on which packet capturing should be enabled for a given port and queue.
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*
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* @return
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* 0 on success, -1 on error, rte_errno is set accordingly.
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*/
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int
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rte_pdump_disable(uint8_t port, uint16_t queue, uint32_t flags);
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/**
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* Enables packet capturing on given device id and queue.
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* device_id can be name or pci address of device.
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*
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* @param device_id
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* device id on which packet capturing should be enabled.
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* @param queue
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* queue of a given device id on which packet capturing should be enabled.
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* users should pass on value UINT16_MAX to enable packet capturing on all
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* queues of a given device id.
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* @param flags
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* flags specifies RTE_PDUMP_FLAG_RX/RTE_PDUMP_FLAG_TX/RTE_PDUMP_FLAG_RXTX
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* on which packet capturing should be enabled for a given port and queue.
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* @param ring
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* ring on which captured packets will be enqueued for user.
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* @param mp
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* mempool on to which original packets will be mirrored or duplicated.
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* @param filter
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* place holder for packet filtering.
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*
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* @return
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* 0 on success, -1 on error, rte_errno is set accordingly.
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*/
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int
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rte_pdump_enable_by_deviceid(char *device_id, uint16_t queue,
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uint32_t flags,
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struct rte_ring *ring,
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struct rte_mempool *mp,
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void *filter);
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/**
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* Disables packet capturing on given device_id and queue.
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* device_id can be name or pci address of device.
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*
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* @param device_id
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* pci address or name of the device on which packet capturing
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* should be disabled.
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* @param queue
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* queue of a given device on which packet capturing should be disabled.
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* users should pass on value UINT16_MAX to disable packet capturing on all
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* queues of a given device id.
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* @param flags
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* flags specifies RTE_PDUMP_FLAG_RX/RTE_PDUMP_FLAG_TX/RTE_PDUMP_FLAG_RXTX
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* on which packet capturing should be enabled for a given port and queue.
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*
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* @return
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* 0 on success, -1 on error, rte_errno is set accordingly.
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*/
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int
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rte_pdump_disable_by_deviceid(char *device_id, uint16_t queue,
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uint32_t flags);
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/**
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* Allows applications to set server and client socket paths.
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* If specified path is null default path will be selected, i.e.
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*"/var/run/" for root user and "$HOME" for non root user.
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* Clients also need to call this API to set their server path if the
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* server path is different from default path.
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* This API is not thread-safe.
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*
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* @param path
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* directory path for server or client socket.
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* @type
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* specifies RTE_PDUMP_SOCKET_SERVER if socket path is for server.
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* (or)
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* specifies RTE_PDUMP_SOCKET_CLIENT if socket path is for client.
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*
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* @return
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* 0 on success, -EINVAL on error
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*
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*/
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int
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rte_pdump_set_socket_dir(const char *path, enum rte_pdump_socktype type);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RTE_PDUMP_H_ */
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