diff options
Diffstat (limited to 'drivers/net/cxgbe/cxgbe_compat.h')
| -rw-r--r-- | drivers/net/cxgbe/cxgbe_compat.h | 55 |
1 files changed, 15 insertions, 40 deletions
diff --git a/drivers/net/cxgbe/cxgbe_compat.h b/drivers/net/cxgbe/cxgbe_compat.h index 03bba9fe..5d47c5f3 100644 --- a/drivers/net/cxgbe/cxgbe_compat.h +++ b/drivers/net/cxgbe/cxgbe_compat.h @@ -1,34 +1,6 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2014-2017 Chelsio Communications. - * 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 Chelsio Communications 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. +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2014-2018 Chelsio Communications. + * All rights reserved. */ #ifndef _CXGBE_COMPAT_H_ @@ -226,15 +198,6 @@ static inline int cxgbe_fls(int x) return x ? sizeof(x) * 8 - __builtin_clz(x) : 0; } -/** - * cxgbe_ffs - find first bit set - * @x: the word to search - */ -static inline int cxgbe_ffs(int x) -{ - return x ? __builtin_ffs(x) : 0; -} - static inline unsigned long ilog2(unsigned long n) { unsigned int e = 0; @@ -278,4 +241,16 @@ static inline void writel_relaxed(unsigned int val, volatile void __iomem *addr) rte_write32_relaxed(val, addr); } +/* + * Multiplies an integer by a fraction, while avoiding unnecessary + * overflow or loss of precision. + */ +#define mult_frac(x, numer, denom)( \ +{ \ + typeof(x) quot = (x) / (denom); \ + typeof(x) rem = (x) % (denom); \ + (quot * (numer)) + ((rem * (numer)) / (denom)); \ +} \ +) + #endif /* _CXGBE_COMPAT_H_ */ |