#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
+#include <linux/scatterlist.h>
#include <asm/cacheflush.h>
#include <asm/bfin-global.h>
#include <linux/dma-mapping.h>
#include <linux/device.h>
#include <linux/kernel.h>
+#include <linux/scatterlist.h>
#include <linux/vmalloc.h>
#include <asm/pgalloc.h>
-#include <asm/scatterlist.h>
void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *handle, gfp_t flag)
dma_sg->dma_length = dent_len;
if (dma_sg != sg) {
- dma_sg = next_sg(dma_sg);
+ dma_sg = sg_next(dma_sg);
dma_sg->dma_length = 0;
}
state.nc = 0;
for (i = 0; i < num_sg; i++)
- fill_cookies(&state, page_to_pfn(sg[i].page) << PAGE_SHIFT,
+ fill_cookies(&state, page_to_pfn(sg_page(&sg[i])) << PAGE_SHIFT,
sg[i].offset, sg[i].length);
return state.nc;
#include "linux/genhd.h"
#include "linux/spinlock.h"
#include "linux/platform_device.h"
+#include "linux/scatterlist.h"
#include "asm/segment.h"
#include "asm/uaccess.h"
#include "asm/irq.h"
ubd_dev->size = ROUND_BLOCK(ubd_dev->size);
INIT_LIST_HEAD(&ubd_dev->restart);
+ sg_init_table(&ubd_dev->sg, MAX_SG);
err = -ENOMEM;
ubd_dev->queue = blk_init_queue(do_ubd_request, &ubd_dev->lock);
BUG_ON(s != start && s->offset);
if (s == start) {
- *sout = *s;
sout->dma_address = iommu_bus_base;
sout->dma_address += iommu_page*PAGE_SIZE + s->offset;
sout->dma_length = s->length;
{
if (!need) {
BUG_ON(nelems != 1);
- *sout = *start;
+ sout->dma_address = start->dma_address;
sout->dma_length = start->length;
return 0;
}
sg = sg_next(sg);
}
- sg_set_page(sg, bvec->bv_page);
- sg->length = nbytes;
- sg->offset = bvec->bv_offset;
+ sg_set_page(sg, bvec->bv_page, nbytes, bvec->bv_offset);
nsegs++;
}
bvprv = bvec;
sg_set_buf(sg1, ipad, bs);
- sg_set_page(&sg[1], (void *) sg);
- sg1[1].length = 0;
+ sg_set_page(&sg[1], (void *) sg, 0, 0);
sg_set_buf(sg2, opad, bs + ds);
err = crypto_hash_digest(&desc, sg1, nbytes + bs, digest);
* data in this function or read data in ata_sg_clean.
*/
offset = lsg->offset + lsg->length - qc->pad_len;
- sg_set_page(psg, nth_page(sg_page(lsg), offset >> PAGE_SHIFT));
- psg->offset = offset_in_page(offset);
+ sg_set_page(psg, nth_page(sg_page(lsg), offset >> PAGE_SHIFT),
+ qc->pad_len, offset_in_page(offset));
if (qc->tf.flags & ATA_TFLAG_WRITE) {
void *addr = kmap_atomic(sg_page(psg), KM_IRQ0);
u32 iv[4] = { 0, };
iv[0] = cpu_to_le32(IV & 0xffffffff);
- sg_set_page(&sg_in, in_page);
- sg_in.offset = in_offs;
- sg_in.length = sz;
-
- sg_set_page(&sg_out, out_page);
- sg_out.offset = out_offs;
- sg_out.length = sz;
+ sg_set_page(&sg_in, in_page, sz, in_offs);
+ sg_set_page(&sg_out, out_page, sz, out_offs);
desc.info = iv;
err = encdecfunc(&desc, &sg_out, &sg_in, sz);
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/list.h>
+#include <linux/scatterlist.h>
#include <asm/vio.h>
#include <asm/ldc.h>
scmd->state = UB_CMDST_INIT;
scmd->nsg = 1;
sg = &scmd->sgv[0];
- sg_set_page(sg, virt_to_page(sc->top_sense));
- sg->offset = (unsigned long)sc->top_sense & (PAGE_SIZE-1);
- sg->length = UB_SENSE_SIZE;
+ sg_init_table(sg, UB_MAX_REQ_SG);
+ sg_set_page(sg, virt_to_page(sc->top_sense), UB_SENSE_SIZE,
+ (unsigned long)sc->top_sense & (PAGE_SIZE-1));
scmd->len = UB_SENSE_SIZE;
scmd->lun = cmd->lun;
scmd->done = ub_top_sense_done;
cmd->state = UB_CMDST_INIT;
cmd->nsg = 1;
sg = &cmd->sgv[0];
- sg_set_page(sg, virt_to_page(p));
- sg->offset = (unsigned long)p & (PAGE_SIZE-1);
- sg->length = 8;
+ sg_init_table(sg, UB_MAX_REQ_SG);
+ sg_set_page(sg, virt_to_page(p), 8, (unsigned long)p & (PAGE_SIZE-1));
cmd->len = 8;
cmd->lun = lun;
cmd->done = ub_probe_done;
#include <linux/hdreg.h>
#include <linux/virtio.h>
#include <linux/virtio_blk.h>
-#include <linux/virtio_blk.h>
+#include <linux/scatterlist.h>
+
+#define VIRTIO_MAX_SG (3+MAX_PHYS_SEGMENTS)
static unsigned char virtblk_index = 'a';
struct virtio_blk
mempool_t *pool;
/* Scatterlist: can be too big for stack. */
- struct scatterlist sg[3+MAX_PHYS_SEGMENTS];
+ struct scatterlist sg[VIRTIO_MAX_SG];
};
struct virtblk_req
if (blk_barrier_rq(vbr->req))
vbr->out_hdr.type |= VIRTIO_BLK_T_BARRIER;
- /* We have to zero this, otherwise blk_rq_map_sg gets upset. */
- memset(vblk->sg, 0, sizeof(vblk->sg));
+ /* This init could be done at vblk creation time */
+ sg_init_table(vblk->sg, VIRTIO_MAX_SG);
sg_set_buf(&vblk->sg[0], &vbr->out_hdr, sizeof(vbr->out_hdr));
num = blk_rq_map_sg(q, vbr->req, vblk->sg+1);
sg_set_buf(&vblk->sg[num+1], &vbr->in_hdr, sizeof(vbr->in_hdr));
#include <linux/completion.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <linux/scatterlist.h>
#include <asm/vio.h>
-#include <asm/scatterlist.h>
#include <asm/iseries/hv_types.h>
#include <asm/iseries/hv_lp_event.h>
#include <asm/iseries/vio.h>
cmd = viomajorsubtype_cdio | viocdwrite;
}
+ sg_init_table(&sg, 1);
if (blk_rq_map_sg(req->q, req, &sg) == 0) {
printk(VIOCD_KERN_WARNING
"error setting up scatter/gather list\n");
unsigned long va =
(unsigned long)dma->kvirt + (i << PAGE_SHIFT);
- sg_set_page(&dma->sglist[i], vmalloc_to_page((void *)va));
- dma->sglist[i].length = PAGE_SIZE;
+ sg_set_page(&dma->sglist[i], vmalloc_to_page((void *)va),
+ PAGE_SIZE, 0);
}
/* map sglist to the IOMMU */
if (vma_list &&
!is_vm_hugetlb_page(vma_list[i + off]))
umem->hugetlb = 0;
- sg_set_page(&chunk->page_list[i], page_list[i + off]);
- chunk->page_list[i].offset = 0;
- chunk->page_list[i].length = PAGE_SIZE;
+ sg_set_page(&chunk->page_list[i], page_list[i + off], PAGE_SIZE, 0);
}
chunk->nmap = ib_dma_map_sg(context->device,
if (!page)
return -ENOMEM;
- sg_set_page(mem, page);
- mem->length = PAGE_SIZE << order;
- mem->offset = 0;
+ sg_set_page(mem, page, PAGE_SIZE << order, 0);
return 0;
}
if (ret < 0)
goto out;
- sg_set_page(&db_tab->page[i].mem, pages[0]);
- db_tab->page[i].mem.length = MTHCA_ICM_PAGE_SIZE;
- db_tab->page[i].mem.offset = uaddr & ~PAGE_MASK;
+ sg_set_page(&db_tab->page[i].mem, pages[0], MTHCA_ICM_PAGE_SIZE,
+ uaddr & ~PAGE_MASK);
ret = pci_map_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
if (ret < 0) {
struct scatterlist sg_in, sg_out;
sg_init_table(&sg_in, 1);
- sg_set_page(&sg_in, bv_in->bv_page);
- sg_in.offset = bv_in->bv_offset + ctx->offset_in;
- sg_in.length = 1 << SECTOR_SHIFT;
+ sg_set_page(&sg_in, bv_in->bv_page, 1 << SECTOR_SHIFT, bv_in->bv_offset + ctx->offset_in);
sg_init_table(&sg_out, 1);
- sg_set_page(&sg_out, bv_out->bv_page);
- sg_out.offset = bv_out->bv_offset + ctx->offset_out;
- sg_out.length = 1 << SECTOR_SHIFT;
+ sg_set_page(&sg_out, bv_out->bv_page, 1 << SECTOR_SHIFT, bv_out->bv_offset + ctx->offset_out);
ctx->offset_in += sg_in.length;
if (ctx->offset_in >= bv_in->bv_len) {
if (NULL == pg)
goto err;
BUG_ON(PageHighMem(pg));
- sg_set_page(&sglist[i], pg);
- sglist[i].length = PAGE_SIZE;
+ sg_set_page(&sglist[i], pg, PAGE_SIZE, 0);
}
return sglist;
unsigned int len = (i == dma_page->page_count - 1) ?
dma_page->tail : PAGE_SIZE - offset;
- dma->SGlist[map_offset].length = len;
- dma->SGlist[map_offset].offset = offset;
if (PageHighMem(dma->map[map_offset])) {
void *src;
memcpy(page_address(dma->bouncemap[map_offset]) + offset, src, len);
kunmap_atomic(src, KM_BOUNCE_READ);
local_irq_restore(flags);
- sg_set_page(&dma->SGlist[map_offset], dma->bouncemap[map_offset]);
+ sg_set_page(&dma->SGlist[map_offset], dma->bouncemap[map_offset], len, offset);
}
else {
- sg_set_page(&dma->SGlist[map_offset], dma->map[map_offset]);
+ sg_set_page(&dma->SGlist[map_offset], dma->map[map_offset], len, offset);
}
offset = 0;
map_offset++;
if (NULL == pg)
goto err;
BUG_ON(PageHighMem(pg));
- sg_set_page(&sglist[i], pg);
- sglist[i].length = PAGE_SIZE;
+ sg_set_page(&sglist[i], pg, PAGE_SIZE, 0);
}
return sglist;
if (PageHighMem(pages[0]))
/* DMA to highmem pages might not work */
goto highmem;
- sg_set_page(&sglist[0], pages[0]);
- sglist[0].offset = offset;
- sglist[0].length = PAGE_SIZE - offset;
+ sg_set_page(&sglist[0], pages[0], PAGE_SIZE - offset, offset);
for (i = 1; i < nr_pages; i++) {
if (NULL == pages[i])
goto nopage;
if (PageHighMem(pages[i]))
goto highmem;
- sg_set_page(&sglist[i], pages[i]);
- sglist[i].length = PAGE_SIZE;
+ sg_set_page(&sglist[i], pages[i], PAGE_SIZE, 0);
}
return sglist;
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&ireq->queue);
+ sg_init_table(ireq->sg_table, I2O_MAX_PHYS_SEGMENTS);
return ireq;
};
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
+#include <scatterlist/scatterlist.h>
#include <linux/mmc/host.h>
#include <asm/io.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-au1x00/au1100_mmc.h>
-#include <asm/scatterlist.h>
#include <au1xxx.h>
#include "au1xmmc.h"
#include <linux/mmc/host.h>
#include <linux/amba/bus.h>
#include <linux/clk.h>
+#include <linux/scatterlist.h>
#include <asm/cacheflush.h>
#include <asm/div64.h>
#include <asm/io.h>
-#include <asm/scatterlist.h>
#include <asm/sizes.h>
#include <asm/mach/mmc.h>
* partially written to a page is properly coherent.
*/
if (host->sg_len && data->flags & MMC_DATA_READ)
- flush_dcache_page(host->sg_ptr->page);
+ flush_dcache_page(sg_page(host->sg_ptr));
}
if (status & MCI_DATAEND) {
mmci_stop_data(host);
* page, ensure that the data cache is coherent.
*/
if (status & MCI_RXACTIVE)
- flush_dcache_page(host->sg_ptr->page);
+ flush_dcache_page(sg_page(host->sg_ptr));
if (!mmci_next_sg(host))
break;
#include <asm/dma.h>
#include <asm/io.h>
-#include <asm/scatterlist.h>
#include <asm/sizes.h>
#include <asm/arch/pxa-regs.h>
#include <linux/mmc/host.h>
-#include <asm/scatterlist.h>
-
#include "sdhci.h"
#define DRIVER_NAME "sdhci"
#include <linux/pnp.h>
#include <linux/highmem.h>
#include <linux/mmc/host.h>
+#include <linux/scatterlist.h>
#include <asm/io.h>
#include <asm/dma.h>
-#include <asm/scatterlist.h>
#include "wbsd.h"
if (!page)
return -ENOMEM;
- sg_set_page(mem, page);
- mem->length = PAGE_SIZE << order;
- mem->offset = 0;
+ sg_set_page(mem, page, PAGE_SIZE << order, 0);
return 0;
}
sg_init_table(sg_list->sg, sg_list->count);
for (i = 0, sg = sg_list->sg; i < sg_list->count; i++, sg++) {
- sg->length = min(size, PAGE_SIZE);
- sg->offset = 0;
address = (void *) get_zeroed_page(GFP_KERNEL);
if (address == NULL) {
sg_list->count = i;
retval = -ENOMEM;
goto out;
}
- zfcp_address_to_sg(address, sg);
+ zfcp_address_to_sg(address, sg, min(size, PAGE_SIZE));
size -= sg->length;
}
return -ENOMEM;
memset(data, 0, sizeof(*data));
+ sg_init_table(&data->req , 1);
+ sg_init_table(&data->resp , 1);
data->ct.req = &data->req;
data->ct.resp = &data->resp;
data->ct.req_count = data->ct.resp_count = 1;
- zfcp_address_to_sg(&data->ct_iu_req, &data->req);
- zfcp_address_to_sg(&data->ct_iu_resp, &data->resp);
- data->req.length = sizeof(struct ct_iu_gid_pn_req);
- data->resp.length = sizeof(struct ct_iu_gid_pn_resp);
+ zfcp_address_to_sg(&data->ct_iu_req, &data->req, sizeof(struct ct_iu_gid_pn_req));
+ zfcp_address_to_sg(&data->ct_iu_resp, &data->resp, sizeof(struct ct_iu_gid_pn_resp));
*gid_pn = data;
return 0;
static inline void
zfcp_address_to_sg(void *address, struct scatterlist *list)
{
- sg_set_page(list, virt_to_page(address));
- list->offset = ((unsigned long) address) & (PAGE_SIZE - 1);
+ sg_set_buf(list, address, 0);
}
#define REQUEST_LIST_SIZE 128
if (address == NULL)
goto nomem;
- zfcp_address_to_sg(address, send_els->req);
+ zfcp_address_to_sg(address, send_els->req, sizeof(struct zfcp_ls_adisc));
address += PAGE_SIZE >> 1;
- zfcp_address_to_sg(address, send_els->resp);
+ zfcp_address_to_sg(address, send_els->resp, sizeof(struct zfcp_ls_adisc_acc));
send_els->req_count = send_els->resp_count = 1;
send_els->adapter = adapter;
adisc = zfcp_sg_to_address(send_els->req);
send_els->ls_code = adisc->code = ZFCP_LS_ADISC;
- send_els->req->length = sizeof(struct zfcp_ls_adisc);
- send_els->resp->length = sizeof(struct zfcp_ls_adisc_acc);
-
/* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports
without FC-AL-2 capability, so we don't set it */
adisc->wwpn = fc_host_port_name(adapter->scsi_host);
for (endaddr = virt_to_phys(cmd->SCp.ptr + cmd->SCp.this_residual - 1) + 1;
cmd->SCp.buffers_residual &&
- virt_to_phys(page_address(cmd->SCp.buffer[1].page) +
- cmd->SCp.buffer[1].offset) == endaddr;) {
+ virt_to_phys(sg_virt(&cmd->SCp.buffer[1])) == endaddr;) {
MER_PRINTK("VTOP(%p) == %08lx -> merging\n",
- page_address(cmd->SCp.buffer[1].page), endaddr);
+ page_address(sg_page(&cmd->SCp.buffer[1])), endaddr);
#if (NDEBUG & NDEBUG_MERGING)
++cnt;
#endif
return NULL;
}
- sg_set_page(&scatterlist[i], page);
+ sg_set_page(&scatterlist[i], page, 0, 0);
}
return sglist;
iscsi_buf_init_sg(struct iscsi_buf *ibuf, struct scatterlist *sg)
{
sg_init_table(&ibuf->sg, 1);
- sg_set_page(&ibuf->sg, sg_page(sg));
- ibuf->sg.offset = sg->offset;
- ibuf->sg.length = sg->length;
+ sg_set_page(&ibuf->sg, sg_page(sg), sg->length, sg->offset);
/*
* Fastpath: sg element fits into single page
*/
STbuffer->sg[0].offset = 0;
if (page != NULL) {
- sg_set_page(&STbuffer->sg[0], page);
- STbuffer->sg[0].length = b_size;
+ sg_set_page(&STbuffer->sg[0], page, b_size, 0);
STbuffer->b_data = page_address(page);
break;
}
normalize_buffer(STbuffer);
return 0;
}
- sg_set_page(&STbuffer->sg[segs], page);
- STbuffer->sg[segs].length = (OS_FRAME_SIZE - got <= PAGE_SIZE / 2) ? (OS_FRAME_SIZE - got) : b_size;
+ sg_set_page(&STbuffer->sg[segs], page, (OS_FRAME_SIZE - got <= PAGE_SIZE / 2) ? (OS_FRAME_SIZE - got) : b_size, 0);
got += STbuffer->sg[segs].length;
STbuffer->buffer_size = got;
STbuffer->sg_segs = ++segs;
goto out_unlock; */
}
- sg_set_page(sgl, pages[0]);
- sgl[0].offset = uaddr & ~PAGE_MASK;
+ sg_set_page(sgl, pages[0], 0, uaddr & ~PAGE_MASK);
if (nr_pages > 1) {
sgl[0].length = PAGE_SIZE - sgl[0].offset;
count -= sgl[0].length;
- for (i=1; i < nr_pages ; i++) {
- sg_set_page(&sgl[i], pages[i]);
- sgl[i].length = count < PAGE_SIZE ? count : PAGE_SIZE;
- count -= PAGE_SIZE;
- }
+ for (i=1; i < nr_pages ; i++)
+ sg_set_page(&sgl[i], pages[i], count < PAGE_SIZE ? count : PAGE_SIZE, 0);
}
else {
sgl[0].length = count;
scatter_elem_sz_prev = ret_sz;
}
}
- sg_set_page(sg, p);
- sg->length = (ret_sz > num) ? num : ret_sz;
+ sg_set_page(sg, p, (ret_sz > num) ? num : ret_sz, 0);
SCSI_LOG_TIMEOUT(5, printk("sg_build_indirect: k=%d, num=%d, "
"ret_sz=%d\n", k, num, ret_sz));
sg = &(STbp->sg[0]);
frp = STbp->frp;
for (i=count=0; count < length; i++) {
- sg_set_page(&sg[i], frp[i].page);
if (length - count > frp[i].length)
- sg[i].length = frp[i].length;
+ sg_set_page(&sg[i], frp[i].page, frp[i].length, 0);
else
- sg[i].length = length - count;
+ sg_set_page(&sg[i], frp[i].page, length - count, 0);
count += sg[i].length;
- sg[i].offset = 0;
}
STbp->sg_segs = i;
STbp->frp_sg_current = length;
}
/* Populate the scatter/gather list */
- sg_set_page(&sgl[0], pages[0]);
- sgl[0].offset = uaddr & ~PAGE_MASK;
+ sg_set_page(&sgl[0], pages[0], 0, uaddr & ~PAGE_MASK);
if (nr_pages > 1) {
sgl[0].length = PAGE_SIZE - sgl[0].offset;
count -= sgl[0].length;
for (i=1; i < nr_pages ; i++) {
- sg_set_page(&sgl[i], pages[i]);;
- sgl[i].offset = 0;
- sgl[i].length = count < PAGE_SIZE ? count : PAGE_SIZE;
+ sg_set_page(&sgl[i], pages[i],
+ count < PAGE_SIZE ? count : PAGE_SIZE, 0);;
count -= PAGE_SIZE;
}
}
struct scatterlist *sg = sp->SCp.buffer;
while (sz >= 0) {
- sg[sz].dma_address = dvma_map((unsigned long)page_address(sg[sz].page) +
- sg[sz].offset, sg[sz].length);
+ sg[sz].dma_address = dvma_map((unsigned long)sg_virt(&sg[sz]),
+ sg[sz].length);
sz--;
}
sp->SCp.ptr=(char *)((unsigned long)sp->SCp.buffer->dma_address);
while (size > 0 && i < sg_size) {
pg = virt_to_page(addr);
offset = offset_in_page(addr);
- if (sg) {
- sg_set_page(&sg[i], pg);
- sg[i].offset = offset;
- }
+ if (sg)
+ sg_set_page(&sg[i], pg, 0, offset);
remainder_of_page = PAGE_CACHE_SIZE - offset;
if (size >= remainder_of_page) {
if (sg)
sg_init_table(&src_sg, 1);
sg_init_table(&dst_sg, 1);
- sg_set_page(&src_sg, src_page);
- src_sg.offset = src_offset;
- src_sg.length = size;
- sg_set_page(&dst_sg, dst_page);
- dst_sg.offset = dst_offset;
- dst_sg.length = size;
+ sg_set_page(&src_sg, src_page, size, src_offset);
+ sg_set_page(&dst_sg, dst_page, size, dst_offset);
return encrypt_scatterlist(crypt_stat, &dst_sg, &src_sg, size, iv);
}
struct scatterlist src_sg, dst_sg;
sg_init_table(&src_sg, 1);
+ sg_set_page(&src_sg, src_page, size, src_offset);
+
sg_init_table(&dst_sg, 1);
+ sg_set_page(&dst_sg, dst_page, size, dst_offset);
- sg_set_page(&src_sg, src_page);
- src_sg.offset = src_offset;
- src_sg.length = size;
- sg_set_page(&dst_sg, dst_page);
- dst_sg.offset = dst_offset;
- dst_sg.length = size;
return decrypt_scatterlist(crypt_stat, &dst_sg, &src_sg, size, iv);
}
#include <linux/mm.h>
#include <linux/device.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
#include <asm/processor.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
*
* can be rewritten as
*
- * sg_set_page(virt_to_page(some_ptr));
- * sg->offset = (unsigned long) some_ptr & ~PAGE_MASK;
+ * sg_set_buf(sg, some_ptr, length);
*
* and that's it. There's no excuse for not highmem enabling YOUR driver. /jens
*/
#ifndef _XTENSA_DMA_MAPPING_H
#define _XTENSA_DMA_MAPPING_H
-#include <asm/scatterlist.h>
#include <asm/cache.h>
#include <asm/io.h>
#include <linux/mm.h>
+#include <linux/scatterlist.h>
/*
* DMA-consistent mapping functions.
#ifndef _LINUX_SCATTERLIST_H
#define _LINUX_SCATTERLIST_H
+#include <asm/types.h>
#include <asm/scatterlist.h>
#include <linux/mm.h>
#include <linux/string.h>
#define SG_MAGIC 0x87654321
/**
- * sg_set_page - Set sg entry to point at given page
- * @sg: SG entry
- * @page: The page
+ * sg_assign_page - Assign a given page to an SG entry
+ * @sg: SG entry
+ * @page: The page
*
* Description:
- * Use this function to set an sg entry pointing at a page, never assign
- * the page directly. We encode sg table information in the lower bits
- * of the page pointer. See sg_page() for looking up the page belonging
- * to an sg entry.
+ * Assign page to sg entry. Also see sg_set_page(), the most commonly used
+ * variant.
*
**/
-static inline void sg_set_page(struct scatterlist *sg, struct page *page)
+static inline void sg_assign_page(struct scatterlist *sg, struct page *page)
{
unsigned long page_link = sg->page_link & 0x3;
sg->page_link = page_link | (unsigned long) page;
}
+/**
+ * sg_set_page - Set sg entry to point at given page
+ * @sg: SG entry
+ * @page: The page
+ * @len: Length of data
+ * @offset: Offset into page
+ *
+ * Description:
+ * Use this function to set an sg entry pointing at a page, never assign
+ * the page directly. We encode sg table information in the lower bits
+ * of the page pointer. See sg_page() for looking up the page belonging
+ * to an sg entry.
+ *
+ **/
+static inline void sg_set_page(struct scatterlist *sg, struct page *page,
+ unsigned int len, unsigned int offset)
+{
+ sg_assign_page(sg, page);
+ sg->offset = offset;
+ sg->length = len;
+}
+
#define sg_page(sg) ((struct page *) ((sg)->page_link & ~0x3))
/**
static inline void sg_set_buf(struct scatterlist *sg, const void *buf,
unsigned int buflen)
{
- sg_set_page(sg, virt_to_page(buf));
- sg->offset = offset_in_page(buf);
- sg->length = buflen;
+ sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
}
/*
* on the sg page.
*
**/
-static inline unsigned long sg_phys(struct scatterlist *sg)
+static inline dma_addr_t sg_phys(struct scatterlist *sg)
{
return page_to_phys(sg_page(sg)) + sg->offset;
}
if (copy > 0) {
if (copy > len)
copy = len;
- sg_set_page(&sg[elt], virt_to_page(skb->data + offset));
- sg[elt].offset = (unsigned long)(skb->data + offset) % PAGE_SIZE;
- sg[elt].length = copy;
+ sg_set_buf(sg, skb->data + offset, copy);
elt++;
if ((len -= copy) == 0)
return elt;
if (copy > len)
copy = len;
- sg_set_page(&sg[elt], frag->page);
- sg[elt].offset = frag->page_offset+offset-start;
- sg[elt].length = copy;
+ sg_set_page(&sg[elt], frag->page, copy,
+ frag->page_offset+offset-start);
elt++;
if (!(len -= copy))
return elt;
#include <net/ieee80211.h>
#include <linux/crypto.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
#include <linux/crc32.h>
MODULE_AUTHOR("Jouni Malinen");
return -1;
}
sg_init_table(sg, 2);
- sg_set_page(&sg[0], virt_to_page(hdr));
- sg[0].offset = offset_in_page(hdr);
- sg[0].length = 16;
-
- sg_set_page(&sg[1], virt_to_page(data));
- sg[1].offset = offset_in_page(data);
- sg[1].length = data_len;
+ sg_set_buf(&sg[0], hdr, 16);
+ sg_set_buf(&sg[1], data, data_len);
if (crypto_hash_setkey(tfm_michael, key, 8))
return -1;
#include <net/ieee80211.h>
#include <linux/crypto.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
#include <linux/crc32.h>
MODULE_AUTHOR("Jouni Malinen");
/* set up scatter list */
end = skb_tail_pointer(skb);
sg_init_table(&sg, 1);
- sg_set_page(&sg, virt_to_page(auth));
- sg.offset = (unsigned long)(auth) % PAGE_SIZE;
- sg.length = end - (unsigned char *)auth;
+ sg_set_buf(&sg, auth, end - (unsigned char *)auth);
desc.tfm = asoc->ep->auth_hmacs[hmac_id];
desc.flags = 0;
/* Sign the message. */
sg_init_table(&sg, 1);
- sg_set_page(&sg, virt_to_page(&cookie->c));
- sg.offset = (unsigned long)(&cookie->c) % PAGE_SIZE;
- sg.length = bodysize;
+ sg_set_buf(&sg, &cookie->c, bodysize);
keylen = SCTP_SECRET_SIZE;
key = (char *)ep->secret_key[ep->current_key];
desc.tfm = sctp_sk(ep->base.sk)->hmac;
/* Check the signature. */
keylen = SCTP_SECRET_SIZE;
sg_init_table(&sg, 1);
- sg_set_page(&sg, virt_to_page(bear_cookie));
- sg.offset = (unsigned long)(bear_cookie) % PAGE_SIZE;
- sg.length = bodysize;
+ sg_set_buf(&sg, bear_cookie, bodysize);
key = (char *)ep->secret_key[ep->current_key];
desc.tfm = sctp_sk(ep->base.sk)->hmac;
desc.flags = 0;
} else {
in_page = sg_page(sg);
}
- sg_set_page(&desc->infrags[desc->fragno], in_page);
+ sg_assign_page(&desc->infrags[desc->fragno], in_page);
desc->fragno++;
desc->fraglen += sg->length;
desc->pos += sg->length;
if (ret)
return ret;
if (fraglen) {
- sg_set_page(&desc->outfrags[0], sg_page(sg));
- desc->outfrags[0].offset = sg->offset + sg->length - fraglen;
- desc->outfrags[0].length = fraglen;
+ sg_set_page(&desc->outfrags[0], sg_page(sg), fraglen,
+ sg->offset + sg->length - fraglen);
desc->infrags[0] = desc->outfrags[0];
- sg_set_page(&desc->infrags[0], in_page);
+ sg_assign_page(&desc->infrags[0], in_page);
desc->fragno = 1;
desc->fraglen = fraglen;
} else {
if (ret)
return ret;
if (fraglen) {
- sg_set_page(&desc->frags[0], sg_page(sg));
- desc->frags[0].offset = sg->offset + sg->length - fraglen;
- desc->frags[0].length = fraglen;
+ sg_set_page(&desc->frags[0], sg_page(sg), fraglen,
+ sg->offset + sg->length - fraglen);
desc->fragno = 1;
desc->fraglen = fraglen;
} else {
do {
if (thislen > page_len)
thislen = page_len;
- sg_set_page(sg, buf->pages[i]);
- sg->offset = page_offset;
- sg->length = thislen;
+ sg_set_page(sg, buf->pages[i], thislen, page_offset);
ret = actor(sg, data);
if (ret)
goto out;
if (copy > len)
copy = len;
- sg_set_page(&sg, virt_to_page(skb->data + offset));
- sg.offset = (unsigned long)(skb->data + offset) % PAGE_SIZE;
- sg.length = copy;
+ sg_set_buf(&sg, skb->data + offset, copy);
err = icv_update(desc, &sg, copy);
if (unlikely(err))
if (copy > len)
copy = len;
- sg_set_page(&sg, frag->page);
- sg.offset = frag->page_offset + offset-start;
- sg.length = copy;
+ sg_set_page(&sg, frag->page, copy,
+ frag->page_offset + offset-start);
err = icv_update(desc, &sg, copy);
if (unlikely(err))
projects / karo-tx-linux.git / commitdiff