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net: sh_eth alignment fix for sh7724 using NET_IP_ALIGN V2

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

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Magnus Damm 2009-12-15 21:16:55 -08:00 committed by David S. Miller
parent ca55398043
commit 503914cf4a
1 changed files with 6 additions and 1 deletions
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7
drivers/net/sh_eth.c
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@ -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);