| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <11845792671450-git-send-email-jens.axboe@oracle.com> Date: Mon, 16 Jul 2007 11:47:16 +0200 From: Jens Axboe <jens.axboe@...cle.com> To: linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org Cc: Jens Axboe <jens.axboe@...cle.com> Subject: [PATCH 02/33] Add sg helpers for iterating over a scatterlist table First step to being able to change the scatterlist setup without having to modify drivers (a lot :-) Signed-off-by: Jens Axboe <jens.axboe@...cle.com> --- include/linux/scatterlist.h | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 4efbd9c..bed5ab4 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -20,4 +20,13 @@ static inline void sg_init_one(struct scatterlist *sg, const void *buf, sg_set_buf(sg, buf, buflen); } +#define sg_next(sg) ((sg) + 1) +#define sg_last(sg, nents) (&(sg[(nents) - 1])) + +/* + * Loop over each sg element, following the pointer to a new list if necessary + */ +#define for_each_sg(sglist, sg, nr, __i) \ + for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next(sg)) + #endif /* _LINUX_SCATTERLIST_H */ -- 1.5.3.rc0.90.gbaa79 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists