staging: brcm80211: replace PKTPUSH and PKTPULL macros with native skbuff calls

Replacing PKTPUSH by skb_push() call and PKTPULL by skb_pull() call to make
it obvious what the operation is doing with the packet.
Reviewed-by: Henry Ptasinski <henryp@broadcom.com>
Reviewed-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/brcmfmac/dhd_cdc.c

@@ -321,7 +321,7 @@ void dhd_prot_hdrpush(dhd_pub_t *dhd, int ifidx, void *pktbuf)
 #ifdef BDC
 	/* Push BDC header used to convey priority for buses that don't */
 
-	PKTPUSH(pktbuf, BDC_HEADER_LEN);
+	skb_push(pktbuf, BDC_HEADER_LEN);
 
 	h = (struct bdc_header *)PKTDATA(pktbuf);
 
@@ -398,7 +398,7 @@ int dhd_prot_hdrpull(dhd_pub_t *dhd, int *ifidx, void *pktbuf)
 
 	PKTSETPRIO(pktbuf, (h->priority & BDC_PRIORITY_MASK));
 
-	PKTPULL(pktbuf, BDC_HEADER_LEN);
+	skb_pull(pktbuf, BDC_HEADER_LEN);
 #endif				/* BDC */
 
 	return 0;

drivers/staging/brcm80211/brcmfmac/dhd_sdio.c

@@ -365,7 +365,7 @@ extern void bcmsdh_enable_hw_oob_intr(void *sdh, bool enable);
 		ASSERT(datalign < (align));				\
 		ASSERT(PKTLEN((p)) >= ((len) + datalign));	\
 		if (datalign)						\
-			PKTPULL((p), datalign);			\
+			skb_pull((p), datalign);			\
 		PKTSETLEN((p), (len));				\
 	} while (0)
 
@@ -953,7 +953,7 @@ static int dhdsdio_txpkt(dhd_bus_t *bus, void *pkt, uint chan, bool free_pkt)
 			ASSERT(((unsigned long)frame % DHD_SDALIGN) == 0);
 			pad = 0;
 		} else {
-			PKTPUSH(pkt, pad);
+			skb_push(pkt, pad);
 			frame = (u8 *) PKTDATA(pkt);
 
 			ASSERT((pad + SDPCM_HDRLEN) <= (int)PKTLEN(pkt));
@@ -1052,7 +1052,7 @@ static int dhdsdio_txpkt(dhd_bus_t *bus, void *pkt, uint chan, bool free_pkt)
 
 done:
 	/* restore pkt buffer pointer before calling tx complete routine */
-	PKTPULL(pkt, SDPCM_HDRLEN + pad);
+	skb_pull(pkt, SDPCM_HDRLEN + pad);
 	dhd_os_sdunlock(bus->dhd);
 	dhd_txcomplete(bus->dhd, pkt, ret != 0);
 	dhd_os_sdlock(bus->dhd);
@@ -1078,7 +1078,7 @@ int dhd_bus_txdata(struct dhd_bus *bus, void *pkt)
 	/* Push the test header if doing loopback */
 	if (bus->ext_loop) {
 		u8 *data;
-		PKTPUSH(pkt, SDPCM_TEST_HDRLEN);
+		skb_push(pkt, SDPCM_TEST_HDRLEN);
 		data = PKTDATA(pkt);
 		*data++ = SDPCM_TEST_ECHOREQ;
 		*data++ = (u8) bus->loopid++;
@@ -1089,7 +1089,7 @@ int dhd_bus_txdata(struct dhd_bus *bus, void *pkt)
 #endif				/* SDTEST */
 
 	/* Add space for the header */
-	PKTPUSH(pkt, SDPCM_HDRLEN);
+	skb_push(pkt, SDPCM_HDRLEN);
 	ASSERT(IS_ALIGNED((unsigned long)PKTDATA(pkt), 2));
 
 	prec = PRIO2PREC((PKTPRIO(pkt) & PRIOMASK));
@@ -1107,7 +1107,7 @@ int dhd_bus_txdata(struct dhd_bus *bus, void *pkt)
 		/* Priority based enq */
 		dhd_os_sdlock_txq(bus->dhd);
 		if (dhd_prec_enq(bus->dhd, &bus->txq, pkt, prec) == false) {
-			PKTPULL(pkt, SDPCM_HDRLEN);
+			skb_pull(pkt, SDPCM_HDRLEN);
 			dhd_txcomplete(bus->dhd, pkt, false);
 			PKTFREE(osh, pkt, true);
 			DHD_ERROR(("%s: out of bus->txq !!!\n", __func__));
@@ -3426,7 +3426,7 @@ static u8 dhdsdio_rxglom(dhd_bus_t *bus, u8 rxseq)
 		bus->tx_max = txmax;
 
 		/* Remove superframe header, remember offset */
-		PKTPULL(pfirst, doff);
+		skb_pull(pfirst, doff);
 		sfdoff = doff;
 
 		/* Validate all the subframe headers */
@@ -3471,7 +3471,7 @@ static u8 dhdsdio_rxglom(dhd_bus_t *bus, u8 rxseq)
 				 a couple retries */
 			if (bus->glomerr++ < 3) {
 				/* Restore superframe header space */
-				PKTPUSH(pfirst, sfdoff);
+				skb_push(pfirst, sfdoff);
 				dhdsdio_rxfail(bus, true, true);
 			} else {
 				bus->glomerr = 0;
@@ -3522,7 +3522,7 @@ static u8 dhdsdio_rxglom(dhd_bus_t *bus, u8 rxseq)
 #endif
 
 			PKTSETLEN(pfirst, sublen);
-			PKTPULL(pfirst, doff);
+			skb_pull(pfirst, doff);
 
 			if (PKTLEN(pfirst) == 0) {
 				PKTFREE(bus->dhd->osh, pfirst, false);
@@ -4104,7 +4104,7 @@ static uint dhdsdio_readframes(dhd_bus_t *bus, uint maxframes, bool *finished)
 
 		/* Leave room for what we already read, and align remainder */
 		ASSERT(firstread < (PKTLEN(pkt)));
-		PKTPULL(pkt, firstread);
+		skb_pull(pkt, firstread);
 		PKTALIGN(osh, pkt, rdlen, DHD_SDALIGN);
 
 		/* Read the remaining frame data */
@@ -4132,7 +4132,7 @@ static uint dhdsdio_readframes(dhd_bus_t *bus, uint maxframes, bool *finished)
 		}
 
 		/* Copy the already-read portion */
-		PKTPUSH(pkt, firstread);
+		skb_push(pkt, firstread);
 		bcopy(bus->rxhdr, PKTDATA(pkt), firstread);
 
 #ifdef DHD_DEBUG
@@ -4153,7 +4153,7 @@ static uint dhdsdio_readframes(dhd_bus_t *bus, uint maxframes, bool *finished)
 #endif
 				PKTSETLEN(pkt, len);
 				ASSERT(doff == SDPCM_HDRLEN);
-				PKTPULL(pkt, SDPCM_HDRLEN);
+				skb_pull(pkt, SDPCM_HDRLEN);
 				bus->glomd = pkt;
 			} else {
 				DHD_ERROR(("%s: glom superframe w/o "
@@ -4165,7 +4165,7 @@ static uint dhdsdio_readframes(dhd_bus_t *bus, uint maxframes, bool *finished)
 
 		/* Fill in packet len and prio, deliver upward */
 		PKTSETLEN(pkt, len);
-		PKTPULL(pkt, doff);
+		skb_pull(pkt, doff);
 
 #ifdef SDTEST
 		/* Test channel packets are processed separately */

drivers/staging/brcm80211/include/linux_osl.h

@@ -274,8 +274,6 @@ extern void osl_dma_unmap(struct osl_info *osh, uint pa, uint size,
 #define	PKTSETNEXT(skb, x)	\
 	(((struct sk_buff *)(skb))->next = (struct sk_buff *)(x))
 #define	PKTSETLEN(skb, len)	__skb_trim((struct sk_buff *)(skb), (len))
-#define	PKTPUSH(skb, bytes)	skb_push((struct sk_buff *)(skb), (bytes))
-#define	PKTPULL(skb, bytes)	skb_pull((struct sk_buff *)(skb), (bytes))
 #define PKTALLOCED(osh)		(((struct osl_pubinfo *)(osh))->pktalloced)
 #define PKTSETPOOL(osh, skb, x, y)	do {} while (0)
 #define PKTPOOL(osh, skb)		false

drivers/staging/brcm80211/sys/wlc_ampdu.c

@@ -1187,8 +1187,8 @@ wlc_ampdu_dotxstatus_complete(ampdu_info_t *ampdu, struct scb *scb, void *p,
 				     status & TX_STATUS_FRM_RTX_MASK) >>
 				    TX_STATUS_FRM_RTX_SHIFT;
 
-				PKTPULL(p, D11_PHY_HDR_LEN);
-				PKTPULL(p, D11_TXH_LEN);
+				skb_pull(p, D11_PHY_HDR_LEN);
+				skb_pull(p, D11_TXH_LEN);
 
 				ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw,
 							    p);
@@ -1213,8 +1213,8 @@ wlc_ampdu_dotxstatus_complete(ampdu_info_t *ampdu, struct scb *scb, void *p,
 				ieee80211_tx_info_clear_status(tx_info);
 				tx_info->flags |=
 				    IEEE80211_TX_STAT_AMPDU_NO_BACK;
-				PKTPULL(p, D11_PHY_HDR_LEN);
-				PKTPULL(p, D11_TXH_LEN);
+				skb_pull(p, D11_PHY_HDR_LEN);
+				skb_pull(p, D11_TXH_LEN);
 				WL_ERROR(("%s: BA Timeout, seq %d, in_transit %d\n", SHORTNAME, seq, ini->tx_in_transit));
 				ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw,
 							    p);

drivers/staging/brcm80211/sys/wlc_mac80211.c

@@ -5942,10 +5942,10 @@ wlc_d11hdrs_mac80211(wlc_info_t *wlc, struct ieee80211_hw *hw,
 	ASSERT(tx_info);
 
 	/* add PLCP */
-	plcp = PKTPUSH(p, D11_PHY_HDR_LEN);
+	plcp = skb_push(p, D11_PHY_HDR_LEN);
 
 	/* add Broadcom tx descriptor header */
-	txh = (d11txh_t *) PKTPUSH(p, D11_TXH_LEN);
+	txh = (d11txh_t *) skb_push(p, D11_TXH_LEN);
 	bzero((char *)txh, D11_TXH_LEN);
 
 	/* setup frameid */
@@ -6890,8 +6890,8 @@ wlc_dotxstatus(wlc_info_t *wlc, tx_status_t *txs, u32 frm_tx2)
 		PKTSETLINK(p, NULL);
 		wlc->txretried = 0;
 		/* remove PLCP & Broadcom tx descriptor header */
-		PKTPULL(p, D11_PHY_HDR_LEN);
-		PKTPULL(p, D11_TXH_LEN);
+		skb_pull(p, D11_PHY_HDR_LEN);
+		skb_pull(p, D11_TXH_LEN);
 		ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw, p);
 		WLCNTINCR(wlc->pub->_cnt->ieee_tx_status);
 	} else {
@@ -7163,7 +7163,7 @@ wlc_recvctl(wlc_info_t *wlc, struct osl_info *osh, d11rxhdr_t *rxh, void *p)
 
 	/* mac header+body length, exclude CRC and plcp header */
 	len_mpdu = PKTLEN(p) - D11_PHY_HDR_LEN - DOT11_FCS_LEN;
-	PKTPULL(p, D11_PHY_HDR_LEN);
+	skb_pull(p, D11_PHY_HDR_LEN);
 	PKTSETLEN(p, len_mpdu);
 
 	ASSERT(!PKTNEXT(p));
@@ -7225,7 +7225,7 @@ void BCMFASTPATH wlc_recv(wlc_info_t *wlc, void *p)
 	rxh = (d11rxhdr_t *) PKTDATA(p);
 
 	/* strip off rxhdr */
-	PKTPULL(p, wlc->hwrxoff);
+	skb_pull(p, wlc->hwrxoff);
 
 	/* fixup rx header endianness */
 	ltoh16_buf((void *)rxh, sizeof(d11rxhdr_t));
@@ -7238,7 +7238,7 @@ void BCMFASTPATH wlc_recv(wlc_info_t *wlc, void *p)
 				  wlc->pub->unit, PKTLEN(p)));
 			goto toss;
 		}
-		PKTPULL(p, 2);
+		skb_pull(p, 2);
 	}
 
 	h = (struct dot11_header *)(PKTDATA(p) + D11_PHY_HDR_LEN);

drivers/staging/brcm80211/util/hnddma.c

@@ -1110,7 +1110,7 @@ static bool BCMFASTPATH _dma_rxfill(dma_info_t *di)
 		}
 		/* reserve an extra headroom, if applicable */
 		if (extra_offset)
-			PKTPULL(p, extra_offset);
+			skb_pull(p, extra_offset);
 
 		/* Do a cached write instead of uncached write since DMA_MAP
 		 * will flush the cache.