netdev - Re: [net-next:master 13/14] drivers/net/ethernet/faraday/ftgmac100.c:777:13: error: 'skb_frag_t {aka struct bio

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Date:   Tue, 23 Jul 2019 04:52:38 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     René van Dorst <opensource@...rst.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org, davem@...emloft.net
Subject: Re: [net-next:master 13/14]
 drivers/net/ethernet/faraday/ftgmac100.c:777:13: error: 'skb_frag_t {aka
 struct bio_vec}' has no member named 'size'

On Tue, Jul 23, 2019 at 08:58:44AM +0000, René van Dorst wrote:
> Hi Matthew,
> 
> I see the same issue for the mediatek/mtk_eth_soc driver.

Thanks, Rene.  The root problem for both of these drivers is that neither
are built on x86 with CONFIG_COMPILE_TEST.  Is it possible to fix this?

An untested patch to fix both of these problems (and two more that I
spotted):

diff --git a/drivers/atm/he.c b/drivers/atm/he.c
index 211607986134..70b00ae4ec38 100644
--- a/drivers/atm/he.c
+++ b/drivers/atm/he.c
@@ -2580,10 +2580,9 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
 			slot = 0;
 		}
 
-		tpd->iovec[slot].addr = dma_map_single(&he_dev->pci_dev->dev,
-			(void *) page_address(frag->page) + frag->page_offset,
-				frag->size, DMA_TO_DEVICE);
-		tpd->iovec[slot].len = frag->size;
+		tpd->iovec[slot].addr = skb_frag_dma_map(&he_dev->pci_dev->dev,
+				frag, 0, skb_frag_size(frag), DMA_TO_DEVICE);
+		tpd->iovec[slot].len = skb_frag_size(frag);
 		++slot;
 
 	}
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index 030fed65393e..dc8d3e726e75 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -774,7 +774,7 @@ static netdev_tx_t ftgmac100_hard_start_xmit(struct sk_buff *skb,
 	for (i = 0; i < nfrags; i++) {
 		skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
-		len = frag->size;
+		len = skb_frag_size(frag);
 
 		/* Map it */
 		map = skb_frag_dma_map(priv->dev, frag, 0, len,
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index f38c3fa7d705..9c4d1afa34e5 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -1958,7 +1958,7 @@ static int skb_to_sg_fd(struct dpaa_priv *priv,
 	/* populate the rest of SGT entries */
 	for (i = 0; i < nr_frags; i++) {
 		frag = &skb_shinfo(skb)->frags[i];
-		frag_len = frag->size;
+		frag_len = skb_frag_size(frag);
 		WARN_ON(!skb_frag_page(frag));
 		addr = skb_frag_dma_map(dev, frag, 0,
 					frag_len, dma_dir);
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 00991df44ed6..e529d86468b8 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -787,7 +787,8 @@ static inline int mtk_cal_txd_req(struct sk_buff *skb)
 	if (skb_is_gso(skb)) {
 		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 			frag = &skb_shinfo(skb)->frags[i];
-			nfrags += DIV_ROUND_UP(frag->size, MTK_TX_DMA_BUF_LEN);
+			nfrags += DIV_ROUND_UP(skb_frag_size(frag),
+						MTK_TX_DMA_BUF_LEN);
 		}
 	} else {
 		nfrags += skb_shinfo(skb)->nr_frags;