488570ebd4
Many open source projects have moved to using SPDX identifiers to specify license information, reducing the amount of boilerplate code in every source file. This patch replaces the bulk of SPDK .c, .cpp and Makefiles with the BSD-3-Clause identifier. Almost all of these files share the exact same license text, and this patch only modifies the files that contain the most common license text. There can be slight variations because the third clause contains company names - most say "Intel Corporation", but there are instances for Nvidia, Samsung, Eideticom and even "the copyright holder". Used a bash script to automate replacement of the license text with SPDX identifier which is checked into scripts/spdx.sh. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: Iaa88ab5e92ea471691dc298cfe41ebfb5d169780 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12904 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Dong Yi <dongx.yi@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Paul Luse <paul.e.luse@intel.com> Reviewed-by: <qun.wan@intel.com>
100 lines
2.0 KiB
C
100 lines
2.0 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
|
|
* Copyright (c) Intel Corporation.
|
|
* All rights reserved.
|
|
*/
|
|
|
|
#ifndef __SGL_INTERNAL_H__
|
|
#define __SGL_INTERNAL_H__
|
|
|
|
#include "spdk/stdinc.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
struct spdk_iov_sgl {
|
|
struct iovec *iov;
|
|
int iovcnt;
|
|
uint32_t iov_offset;
|
|
uint32_t total_size;
|
|
};
|
|
|
|
/**
|
|
* Initialize struct spdk_iov_sgl with iov, iovcnt and iov_offset.
|
|
*
|
|
* \param s the spdk_iov_sgl to be filled.
|
|
* \param iov the io vector to fill the s
|
|
* \param iovcnt the size the iov
|
|
* \param iov_offset the current filled iov_offset for s.
|
|
*/
|
|
|
|
static inline void
|
|
spdk_iov_sgl_init(struct spdk_iov_sgl *s, struct iovec *iov, int iovcnt,
|
|
uint32_t iov_offset)
|
|
{
|
|
s->iov = iov;
|
|
s->iovcnt = iovcnt;
|
|
s->iov_offset = iov_offset;
|
|
s->total_size = 0;
|
|
}
|
|
|
|
/**
|
|
* Consume the iovs in spdk_iov_sgl with passed bytes
|
|
*
|
|
* \param s the spdk_iov_sgl which contains the iov
|
|
* \param step the bytes_size consumed.
|
|
*/
|
|
|
|
static inline void
|
|
spdk_iov_sgl_advance(struct spdk_iov_sgl *s, uint32_t step)
|
|
{
|
|
s->iov_offset += step;
|
|
while (s->iovcnt > 0) {
|
|
assert(s->iov != NULL);
|
|
if (s->iov_offset < s->iov->iov_len) {
|
|
break;
|
|
}
|
|
|
|
s->iov_offset -= s->iov->iov_len;
|
|
s->iov++;
|
|
s->iovcnt--;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Append the data to the struct spdk_iov_sgl pointed by s
|
|
*
|
|
* \param s the address of the struct spdk_iov_sgl
|
|
* \param data the data buffer to be appended
|
|
* \param data_len the length of the data.
|
|
*
|
|
* \return true if all the data is appended.
|
|
*/
|
|
|
|
static inline bool
|
|
spdk_iov_sgl_append(struct spdk_iov_sgl *s, uint8_t *data, uint32_t data_len)
|
|
{
|
|
if (s->iov_offset >= data_len) {
|
|
s->iov_offset -= data_len;
|
|
} else {
|
|
assert(s->iovcnt > 0);
|
|
s->iov->iov_base = data + s->iov_offset;
|
|
s->iov->iov_len = data_len - s->iov_offset;
|
|
s->total_size += data_len - s->iov_offset;
|
|
s->iov_offset = 0;
|
|
s->iov++;
|
|
s->iovcnt--;
|
|
if (s->iovcnt == 0) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __SGL_INTERNAL_H__ */
|