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linuxkpi: Add for_each_sgtable_{sg,page}

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Needed by drm-kmod.

Reviewed by:	bz
Obtained from:	drm-kmod
Sponsored by:	Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D36098
This commit is contained in:
Emmanuel Vadot 2022-08-09 10:54:19 +02:00
parent c6890399fc
commit 4370e9f1cf
1 changed files with 6 additions and 0 deletions
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6
sys/compat/linuxkpi/common/include/linux/scatterlist.h
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@ -99,6 +99,12 @@ struct sg_dma_page_iter {
#define for_each_sg(sglist, sg, sgmax, iter) \
for (iter = 0, sg = (sglist); iter < (sgmax); iter++, sg = sg_next(sg))
#define for_each_sgtable_sg(sgt, sg, i) \
for_each_sg((sgt)->sgl, sg, (sgt)->orig_nents, i)
#define for_each_sgtable_page(sgt, iter, pgoffset) \
for_each_sg_page((sgt)->sgl, iter, (sgt)->orig_nents, pgoffset)
#define for_each_sgtable_dma_sg(sgt, sg, iter) \
for_each_sg((sgt)->sgl, sg, (sgt)->nents, iter)