[AOE]: Introduce aoe_hdr()

For consistency with other skb->mac.raw users.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 17 insertions, 8 deletions

diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index 2308e83e5f33..4c34f8d31cc9 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -48,6 +48,15 @@ struct aoe_hdr {
         __be32 tag;
 };
 
+#ifdef __KERNEL__
+#include <linux/skbuff.h>
+
+static inline struct aoe_hdr *aoe_hdr(const struct sk_buff *skb)
+{
+        return (struct aoe_hdr *)skb->mac.raw;
+}
+#endif
+
 struct aoe_atahdr {
         unsigned char aflags;
         unsigned char errfeat;
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 8d17d8df3662..4ab7b40e8c5a 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -118,7 +118,7 @@ aoecmd_ata_rw(struct aoedev *d, struct frame *f)
 
         /* initialize the headers & frame */
         skb = f->skb;
-        h = (struct aoe_hdr *) skb->mac.raw;
+        h = aoe_hdr(skb);
         ah = (struct aoe_atahdr *) (h+1);
         skb_put(skb, sizeof *h + sizeof *ah);
         memset(h, 0, skb->len);
@@ -207,7 +207,7 @@ aoecmd_cfg_pkts(ushort aoemajor, unsigned char aoeminor, struct sk_buff **tail)
                 skb->dev = ifp;
                 if (sl_tail == NULL)
                         sl_tail = skb;
-                h = (struct aoe_hdr *) skb->mac.raw;
+                h = aoe_hdr(skb);
                 memset(h, 0, sizeof *h + sizeof *ch);
 
                 memset(h->dst, 0xff, sizeof h->dst);
@@ -300,7 +300,7 @@ rexmit(struct aoedev *d, struct frame *f)
         aoechr_error(buf);
 
         skb = f->skb;
-        h = (struct aoe_hdr *) skb->mac.raw;
+        h = aoe_hdr(skb);
         ah = (struct aoe_atahdr *) (h+1);
         f->tag = n;
         h->tag = cpu_to_be32(n);
@@ -529,7 +529,7 @@ aoecmd_ata_rsp(struct sk_buff *skb)
         char ebuf[128];
         u16 aoemajor;
 
-        hin = (struct aoe_hdr *) skb->mac.raw;
+        hin = aoe_hdr(skb);
         aoemajor = be16_to_cpu(get_unaligned(&hin->major));
         d = aoedev_by_aoeaddr(aoemajor, hin->minor);
         if (d == NULL) {
@@ -561,7 +561,7 @@ aoecmd_ata_rsp(struct sk_buff *skb)
         calc_rttavg(d, tsince(f->tag));
 
         ahin = (struct aoe_atahdr *) (hin+1);
-        hout = (struct aoe_hdr *) f->skb->mac.raw;
+        hout = aoe_hdr(f->skb);
         ahout = (struct aoe_atahdr *) (hout+1);
         buf = f->buf;
 
@@ -695,7 +695,7 @@ aoecmd_ata_id(struct aoedev *d)
 
         /* initialize the headers & frame */
         skb = f->skb;
-        h = (struct aoe_hdr *) skb->mac.raw;
+        h = aoe_hdr(skb);
         ah = (struct aoe_atahdr *) (h+1);
         skb_put(skb, sizeof *h + sizeof *ah);
         memset(h, 0, skb->len);
@@ -726,7 +726,7 @@ aoecmd_cfg_rsp(struct sk_buff *skb)
         enum { MAXFRAMES = 16 };
         u16 n;
 
-        h = (struct aoe_hdr *) skb->mac.raw;
+        h = aoe_hdr(skb);
         ch = (struct aoe_cfghdr *) (h+1);
 
         /*
diff --git a/drivers/block/aoe/aoenet.c b/drivers/block/aoe/aoenet.c
index aab6d91a2c22..f9ddfda4d9cb 100644
--- a/drivers/block/aoe/aoenet.c
+++ b/drivers/block/aoe/aoenet.c
@@ -123,7 +123,7 @@ aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt,
                 goto exit;
         skb_push(skb, ETH_HLEN);        /* (1) */
 
-        h = (struct aoe_hdr *) skb->mac.raw;
+        h = aoe_hdr(skb);
         n = be32_to_cpu(get_unaligned(&h->tag));
         if ((h->verfl & AOEFL_RSP) == 0 || (n & 1<<31))
                 goto exit;