aoe: remove unecessary wrapper function

We can just use skb_mac_header now, and we don't need a wrapper function to
perform the cast.  Instead of requiring the reader to check aoe.h to look
up what an aoe_hdr function does, I'd rather do without it.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 9967201..4d59d50 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -120,7 +120,7 @@
 
 	/* initialize the headers & frame */
 	skb = f->skb;
-	h = aoe_hdr(skb);
+	h = (struct aoe_hdr *) skb_mac_header(skb);
 	ah = (struct aoe_atahdr *) (h+1);
 	skb_put(skb, sizeof *h + sizeof *ah);
 	memset(h, 0, skb->len);
@@ -209,7 +209,7 @@
 		skb->dev = ifp;
 		if (sl_tail == NULL)
 			sl_tail = skb;
-		h = aoe_hdr(skb);
+		h = (struct aoe_hdr *) skb_mac_header(skb);
 		memset(h, 0, sizeof *h + sizeof *ch);
 
 		memset(h->dst, 0xff, sizeof h->dst);
@@ -304,7 +304,7 @@
 	aoechr_error(buf);
 
 	skb = f->skb;
-	h = aoe_hdr(skb);
+	h = (struct aoe_hdr *) skb_mac_header(skb);
 	ah = (struct aoe_atahdr *) (h+1);
 	f->tag = n;
 	h->tag = cpu_to_be32(n);
@@ -533,7 +533,7 @@
 	char ebuf[128];
 	u16 aoemajor;
 
-	hin = aoe_hdr(skb);
+	hin = (struct aoe_hdr *) skb_mac_header(skb);
 	aoemajor = be16_to_cpu(get_unaligned(&hin->major));
 	d = aoedev_by_aoeaddr(aoemajor, hin->minor);
 	if (d == NULL) {
@@ -565,7 +565,7 @@
 	calc_rttavg(d, tsince(f->tag));
 
 	ahin = (struct aoe_atahdr *) (hin+1);
-	hout = aoe_hdr(f->skb);
+	hout = (struct aoe_hdr *) skb_mac_header(f->skb);
 	ahout = (struct aoe_atahdr *) (hout+1);
 	buf = f->buf;
 
@@ -699,7 +699,7 @@
 
 	/* initialize the headers & frame */
 	skb = f->skb;
-	h = aoe_hdr(skb);
+	h = (struct aoe_hdr *) skb_mac_header(skb);
 	ah = (struct aoe_atahdr *) (h+1);
 	skb_put(skb, sizeof *h + sizeof *ah);
 	memset(h, 0, skb->len);
@@ -730,7 +730,7 @@
 	enum { MAXFRAMES = 16 };
 	u16 n;
 
-	h = aoe_hdr(skb);
+	h = (struct aoe_hdr *) skb_mac_header(skb);
 	ch = (struct aoe_cfghdr *) (h+1);
 
 	/*