cxgbi: convert to SKB paged frag API.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: James Bottomley <James.Bottomley@suse.de>
Cc: Karen Xie <kxie@chelsio.com>
Cc: linux-scsi@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 16 insertions, 14 deletions

diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index be69da38ccaa..1c1329bc77c7 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -1787,7 +1787,7 @@ static int sgl_seek_offset(struct scatterlist *sgl, unsigned int sgcnt,
 }
 
 static int sgl_read_to_frags(struct scatterlist *sg, unsigned int sgoffset,
-                                unsigned int dlen, skb_frag_t *frags,
+                                unsigned int dlen, struct page_frag *frags,
                                 int frag_max)
 {
         unsigned int datalen = dlen;
@@ -1814,8 +1814,8 @@ static int sgl_read_to_frags(struct scatterlist *sg, unsigned int sgoffset,
                 copy = min(datalen, sglen);
                 if (i && page == frags[i - 1].page &&
                     sgoffset + sg->offset ==
-                        frags[i - 1].page_offset + skb_frag_size(&frags[i - 1])) {
-                        skb_frag_size_add(&frags[i - 1], copy);
+                        frags[i - 1].offset + frags[i - 1].size) {
+                        frags[i - 1].size += copy;
                 } else {
                         if (i >= frag_max) {
                                 pr_warn("too many pages %u, dlen %u.\n",
@@ -1824,8 +1824,8 @@ static int sgl_read_to_frags(struct scatterlist *sg, unsigned int sgoffset,
                         }
 
                         frags[i].page = page;
-                        frags[i].page_offset = sg->offset + sgoffset;
-                        skb_frag_size_set(&frags[i], copy);
+                        frags[i].offset = sg->offset + sgoffset;
+                        frags[i].size = copy;
                         i++;
                 }
                 datalen -= copy;
@@ -1944,15 +1944,15 @@ int cxgbi_conn_init_pdu(struct iscsi_task *task, unsigned int offset,
                 if (tdata->nr_frags > MAX_SKB_FRAGS ||
                     (padlen && tdata->nr_frags == MAX_SKB_FRAGS)) {
                         char *dst = skb->data + task->hdr_len;
-                        skb_frag_t *frag = tdata->frags;
+                        struct page_frag *frag = tdata->frags;
 
                         /* data fits in the skb's headroom */
                         for (i = 0; i < tdata->nr_frags; i++, frag++) {
                                 char *src = kmap_atomic(frag->page,
                                                         KM_SOFTIRQ0);
 
-                                memcpy(dst, src+frag->page_offset, skb_frag_size(frag));
-                                dst += skb_frag_size(frag);
+                                memcpy(dst, src+frag->offset, frag->size);
+                                dst += frag->size;
                                 kunmap_atomic(src, KM_SOFTIRQ0);
                         }
                         if (padlen) {
@@ -1962,11 +1962,13 @@ int cxgbi_conn_init_pdu(struct iscsi_task *task, unsigned int offset,
                         skb_put(skb, count + padlen);
                 } else {
                         /* data fit into frag_list */
-                        for (i = 0; i < tdata->nr_frags; i++)
-                                get_page(tdata->frags[i].page);
-
-                        memcpy(skb_shinfo(skb)->frags, tdata->frags,
-                                sizeof(skb_frag_t) * tdata->nr_frags);
+                        for (i = 0; i < tdata->nr_frags; i++) {
+                                __skb_fill_page_desc(skb, i,
+                                                tdata->frags[i].page,
+                                                tdata->frags[i].offset,
+                                                tdata->frags[i].size);
+                                skb_frag_ref(skb, i);
+                        }
                         skb_shinfo(skb)->nr_frags = tdata->nr_frags;
                         skb->len += count;
                         skb->data_len += count;
diff --git a/drivers/scsi/cxgbi/libcxgbi.h b/drivers/scsi/cxgbi/libcxgbi.h
index 9267844519c9..3a25b1187c10 100644
--- a/drivers/scsi/cxgbi/libcxgbi.h
+++ b/drivers/scsi/cxgbi/libcxgbi.h
@@ -574,7 +574,7 @@ struct cxgbi_endpoint {
 #define MAX_PDU_FRAGS   ((ULP2_MAX_PDU_PAYLOAD + 512 - 1) / 512)
 struct cxgbi_task_data {
         unsigned short nr_frags;
-        skb_frag_t frags[MAX_PDU_FRAGS];
+        struct page_frag frags[MAX_PDU_FRAGS];
         struct sk_buff *skb;
         unsigned int offset;
         unsigned int count;