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Commit 503914cf authored by Magnus Damm's avatar Magnus Damm Committed by David S. Miller
Browse files

net: sh_eth alignment fix for sh7724 using NET_IP_ALIGN V2 



Fix sh_eth for sh7724 by adding NET_IP_ALIGN support V2.
Without this patch the receive data is misaligned.

Signed-off-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ca553980

drivers/net/sh_eth.c

+6 −1
Original line number Diff line number Diff line
@@ -84,6 +84,8 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data = { 
	.mpr		= 1,

	.tpauser	= 1,

	.hw_swap	= 1,

	.rpadir		= 1,

	.rpadir_value	= 0x00020000, /* NET_IP_ALIGN assumed to be 2 */

};



#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
@@ -175,7 +177,6 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data = { 
	.tpauser	= 1,

	.bculr		= 1,

	.hw_swap	= 1,

	.rpadir		= 1,

	.no_trimd	= 1,

	.no_ade		= 1,

};
@@ -501,6 +502,8 @@ static int sh_eth_ring_init(struct net_device *ndev) 
	 */

	mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :

			  (((ndev->mtu + 26 + 7) & ~7) + 2 + 16));

	if (mdp->cd->rpadir)

		mdp->rx_buf_sz += NET_IP_ALIGN;



	/* Allocate RX and TX skb rings */

	mdp->rx_skbuff = kmalloc(sizeof(*mdp->rx_skbuff) * RX_RING_SIZE,
@@ -715,6 +718,8 @@ static int sh_eth_rx(struct net_device *ndev) 
					pkt_len + 2);

			skb = mdp->rx_skbuff[entry];

			mdp->rx_skbuff[entry] = NULL;

			if (mdp->cd->rpadir)

				skb_reserve(skb, NET_IP_ALIGN);

			skb_put(skb, pkt_len);

			skb->protocol = eth_type_trans(skb, ndev);

			netif_rx(skb);