All of lore.kernel.org
 help / color / mirror / Atom feed
* [PATCH] net: sh_eth alignment fix for sh7724 using NET_IP_ALIGN
@ 2009-12-14 10:34 ` Magnus Damm
  0 siblings, 0 replies; 20+ messages in thread
From: Magnus Damm @ 2009-12-14 10:34 UTC (permalink / raw)
  To: netdev; +Cc: Magnus Damm, lethal, davem, linux-sh

From: Magnus Damm <damm@opensource.se>

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

Signed-off-by: Magnus Damm <damm@opensource.se>
---

 Tested on Ecovec24. Perhaps for the sh-2.6 tree?

 drivers/net/sh_eth.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- 0001/drivers/net/sh_eth.c
+++ work/drivers/net/sh_eth.c	2009-12-14 15:27:25.000000000 +0900
@@ -84,6 +84,10 @@ static struct sh_eth_cpu_data sh_eth_my_
 	.mpr		= 1,
 	.tpauser	= 1,
 	.hw_swap	= 1,
+#if NET_IP_ALIGN = 2
+	.rpadir		= 1,
+	.rpadir_value	= 0x00020000,
+#endif
 };
 
 #elif defined(CONFIG_CPU_SUBTYPE_SH7763)
@@ -501,6 +505,8 @@ static int sh_eth_ring_init(struct net_d
 	 */
 	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 +721,8 @@ static int sh_eth_rx(struct net_device *
 					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);

^ permalink raw reply	[flat|nested] 20+ messages in thread

end of thread, other threads:[~2009-12-16  5:17 UTC | newest]

Thread overview: 20+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-12-14 10:34 [PATCH] net: sh_eth alignment fix for sh7724 using NET_IP_ALIGN Magnus Damm
2009-12-14 10:34 ` Magnus Damm
2009-12-15  5:57 ` David Miller
2009-12-15  5:57   ` David Miller
2009-12-15  7:13   ` Magnus Damm
2009-12-15  7:13     ` Magnus Damm
2009-12-15  7:15     ` David Miller
2009-12-15  7:15       ` David Miller
2009-12-15  7:22       ` Magnus Damm
2009-12-15  7:22         ` Magnus Damm
2009-12-15  7:28         ` Magnus Damm
2009-12-15  7:28           ` Magnus Damm
2009-12-15  7:34         ` David Miller
2009-12-15  7:34           ` David Miller
2009-12-15  7:36           ` Magnus Damm
2009-12-15  7:36             ` Magnus Damm
2009-12-15 11:03 ` [PATCH] net: sh_eth alignment fix for sh7724 using NET_IP_ALIGN V2 Magnus Damm
2009-12-15 11:03   ` Magnus Damm
2009-12-16  5:17   ` [PATCH] net: sh_eth alignment fix for sh7724 using David Miller
2009-12-16  5:17     ` [PATCH] net: sh_eth alignment fix for sh7724 using NET_IP_ALIGN V2 David Miller

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.