06371afe39
This provides a sample application and library showing how to use the Intel(R) DPDK with basic netmap applications. The Netmap compatibility library provides a minimal set of APIs to give the ability to programs written against the Netmap APIs to be run with minimal changes to their source code, using the Intel® DPDK to perform the actual packet I/O. Since Netmap applications use regular system calls, like open(), ioctl() and mmap() to communicate with the Netmap kernel module performing the packet I/O, the compat_netmap library provides a set of similar APIs to use in place of those system calls, effectively turning a Netmap application into a Intel(R) DPDK one. The provided library is currently minimal and doesn’t support all the features that Netmap supports, but is enough to run simple applications, such as the bridge example included. The application requires a single command line option: -i INTERFACE is the number of a valid Intel(R) DPDK port to use. If a single -i parameter is given, the interface will send back all the traffic it receives. If two -i parameters are given, the two interfaces form a bridge, where traffic received on one interface is replicated and sent by the other interface. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 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_COMPAT_NETMAP_H_
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#include <poll.h>
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#include <linux/ioctl.h>
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#include <net/if.h>
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#include <rte_ethdev.h>
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#include <rte_mempool.h>
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#include "netmap.h"
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#include "netmap_user.h"
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/**
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* One can overwrite Netmap macros here as needed
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*/
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struct rte_netmap_conf {
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int32_t socket_id;
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uint32_t max_rings; /* number of rings(queues) per netmap_if(port) */
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uint32_t max_slots; /* number of slots(descriptors) per netmap ring. */
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uint16_t max_bufsz; /* size of each netmap buffer. */
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};
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struct rte_netmap_port_conf {
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struct rte_eth_conf *eth_conf;
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struct rte_eth_txconf *tx_conf;
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struct rte_eth_rxconf *rx_conf;
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struct rte_mempool *pool;
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int32_t socket_id;
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uint16_t nr_tx_rings;
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uint16_t nr_rx_rings;
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uint32_t nr_tx_slots;
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uint32_t nr_rx_slots;
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uint16_t tx_burst;
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uint16_t rx_burst;
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};
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int rte_netmap_init(const struct rte_netmap_conf *conf);
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int rte_netmap_init_port(uint8_t portid,
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const struct rte_netmap_port_conf *conf);
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int rte_netmap_close(int fd);
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int rte_netmap_ioctl(int fd, int op, void *param);
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int rte_netmap_open(const char *pathname, int flags);
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int rte_netmap_poll(struct pollfd *fds, nfds_t nfds, int timeout);
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void *rte_netmap_mmap(void *addr, size_t length, int prot, int flags, int fd,
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off_t offset);
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#endif /* _RTE_COMPAT_NETMAP_H_ */
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