3031749c2d
This commit removes trailing whitespace from lines in files. Almost all files are affected, as the BSD license copyright header had trailing whitespace on 4 lines in it [hence the number of files reporting 8 lines changed in the diffstat]. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> [Thomas: remove spaces before tabs in libs] [Thomas: remove more trailing spaces in non-C files] Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/*-
|
|
* 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.
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
* Initializes the kni fifo structure
|
|
*/
|
|
static void
|
|
kni_fifo_init(struct rte_kni_fifo *fifo, unsigned size)
|
|
{
|
|
/* Ensure size is power of 2 */
|
|
if (size & (size - 1))
|
|
rte_panic("KNI fifo size must be power of 2\n");
|
|
|
|
fifo->write = 0;
|
|
fifo->read = 0;
|
|
fifo->len = size;
|
|
fifo->elem_size = sizeof(void *);
|
|
}
|
|
|
|
/**
|
|
* Adds num elements into the fifo. Return the number actually written
|
|
*/
|
|
static inline unsigned
|
|
kni_fifo_put(struct rte_kni_fifo *fifo, void **data, unsigned num)
|
|
{
|
|
unsigned i = 0;
|
|
unsigned fifo_write = fifo->write;
|
|
unsigned fifo_read = fifo->read;
|
|
unsigned new_write = fifo_write;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
new_write = (new_write + 1) & (fifo->len - 1);
|
|
|
|
if (new_write == fifo_read)
|
|
break;
|
|
fifo->buffer[fifo_write] = data[i];
|
|
fifo_write = new_write;
|
|
}
|
|
fifo->write = fifo_write;
|
|
return i;
|
|
}
|
|
|
|
/**
|
|
* Get up to num elements from the fifo. Return the number actully read
|
|
*/
|
|
static inline unsigned
|
|
kni_fifo_get(struct rte_kni_fifo *fifo, void **data, unsigned num)
|
|
{
|
|
unsigned i = 0;
|
|
unsigned new_read = fifo->read;
|
|
unsigned fifo_write = fifo->write;
|
|
for (i = 0; i < num; i++) {
|
|
if (new_read == fifo_write)
|
|
break;
|
|
|
|
data[i] = fifo->buffer[new_read];
|
|
new_read = (new_read + 1) & (fifo->len - 1);
|
|
}
|
|
fifo->read = new_read;
|
|
return i;
|
|
}
|