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>

drivers/block/aoe/aoe.h

@@ -48,15 +48,6 @@ 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_header(skb);
-}
-#endif
-
 struct aoe_atahdr {
 	unsigned char aflags;
 	unsigned char errfeat;

drivers/block/aoe/aoecmd.c

@@ -120,7 +120,7 @@ aoecmd_ata_rw(struct aoedev *d, struct frame *f)
 
 	/* 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 @@ aoecmd_cfg_pkts(ushort aoemajor, unsigned char aoeminor, struct sk_buff **tail)
 		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 @@ rexmit(struct aoedev *d, struct frame *f)
 	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 @@ aoecmd_ata_rsp(struct sk_buff *skb)
 	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 @@ aoecmd_ata_rsp(struct sk_buff *skb)
 	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 @@ aoecmd_ata_id(struct aoedev *d)
 
 	/* 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 @@ aoecmd_cfg_rsp(struct sk_buff *skb)
 	enum { MAXFRAMES = 16 };
 	u16 n;
 
-	h = aoe_hdr(skb);
+	h = (struct aoe_hdr *) skb_mac_header(skb);
 	ch = (struct aoe_cfghdr *) (h+1);
 
 	/*

drivers/block/aoe/aoenet.c

@@ -127,7 +127,7 @@ aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt,
 		goto exit;
 	skb_push(skb, ETH_HLEN);	/* (1) */
 
-	h = aoe_hdr(skb);
+	h = (struct aoe_hdr *) skb_mac_header(skb);
 	n = be32_to_cpu(get_unaligned(&h->tag));
 	if ((h->verfl & AOEFL_RSP) == 0 || (n & 1<<31))
 		goto exit;