6aa4972491
This provides a new sample application which demonstrates how the ivshmem library and EAL capabilities can be used to create a zero-copy fast-path for packet communication between host machine and guest vm. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
112 lines
3.7 KiB
C
112 lines
3.7 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 _IVSHMEM_COMMON_H_
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#define _IVSHMEM_COMMON_H_
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#define RTE_LOGTYPE_L2FWD_IVSHMEM RTE_LOGTYPE_USER1
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#define CTRL_MZ_NAME "CTRL_MEMZONE"
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#define MBUF_MP_NAME "MBUF_MEMPOOL"
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#define RX_RING_PREFIX "RX_"
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#define TX_RING_PREFIX "TX_"
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/* A tsc-based timer responsible for triggering statistics printout */
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#define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */
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#define MAX_TIMER_PERIOD 86400 /* 1 day max */
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static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds */
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#define DIM(x)\
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(sizeof(x)/sizeof(x)[0])
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#define MAX_PKT_BURST 32
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const struct rte_memzone * ctrl_mz;
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enum l2fwd_state {
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STATE_NONE = 0,
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STATE_FWD,
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STATE_EXIT,
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STATE_FAIL
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};
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/* Per-port statistics struct */
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struct port_statistics {
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uint64_t tx;
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uint64_t rx;
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uint64_t dropped;
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} __rte_cache_aligned;
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struct mbuf_table {
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unsigned len;
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struct rte_mbuf *m_table[MAX_PKT_BURST * 2]; /**< allow up to two bursts */
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};
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struct vm_port_param {
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struct rte_ring * rx_ring; /**< receiving ring for current port */
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struct rte_ring * tx_ring; /**< transmitting ring for current port */
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struct vm_port_param * dst; /**< current port's destination port */
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volatile struct port_statistics stats; /**< statistics for current port */
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struct ether_addr ethaddr; /**< Ethernet address of the port */
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};
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/* control structure, to synchronize host and VM */
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struct ivshmem_ctrl {
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rte_spinlock_t lock;
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uint8_t nb_ports; /**< total nr of ports */
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volatile enum l2fwd_state state; /**< report state */
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struct vm_port_param vm_ports[RTE_MAX_ETHPORTS];
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};
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struct ivshmem_ctrl * ctrl;
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static unsigned int l2fwd_ivshmem_rx_queue_per_lcore = 1;
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static void sighandler(int __rte_unused s)
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{
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ctrl->state = STATE_EXIT;
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}
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static void sigsetup(void)
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{
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struct sigaction sigIntHandler;
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sigIntHandler.sa_handler = sighandler;
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sigemptyset(&sigIntHandler.sa_mask);
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sigIntHandler.sa_flags = 0;
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sigaction(SIGINT, &sigIntHandler, NULL);
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}
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#endif /* _IVSHMEM_COMMON_H_ */
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