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Date: Fri, 13 Mar 2015 10:36:29 +0200
From: Claudiu Manoil <claudiu.manoil@...escale.com>
To: <netdev@...r.kernel.org>
CC: "David S. Miller" <davem@...emloft.net>
Subject: [PATCH net 2/3] gianfar: Make FCB access endian safe
Use conversion macros to correctly access the BE
fields of the Rx and Tx Frame Control Block on LE CPUs.
Signed-off-by: Claudiu Manoil <claudiu.manoil@...escale.com>
---
drivers/net/ethernet/freescale/gianfar.c | 17 +++++++++--------
drivers/net/ethernet/freescale/gianfar.h | 8 ++++----
2 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index af063d8..5d6883d 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -2169,16 +2169,16 @@ static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb,
*/
if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
flags |= TXFCB_UDP;
- fcb->phcs = udp_hdr(skb)->check;
+ fcb->phcs = (__force __be16)(udp_hdr(skb)->check);
} else
- fcb->phcs = tcp_hdr(skb)->check;
+ fcb->phcs = (__force __be16)(tcp_hdr(skb)->check);
/* l3os is the distance between the start of the
* frame (skb->data) and the start of the IP hdr.
* l4os is the distance between the start of the
* l3 hdr and the l4 hdr
*/
- fcb->l3os = (u16)(skb_network_offset(skb) - fcb_length);
+ fcb->l3os = (u8)(skb_network_offset(skb) - fcb_length);
fcb->l4os = skb_network_header_len(skb);
fcb->flags = flags;
@@ -2187,7 +2187,7 @@ static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb,
void inline gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb)
{
fcb->flags |= TXFCB_VLN;
- fcb->vlctl = skb_vlan_tag_get(skb);
+ fcb->vlctl = cpu_to_be16(skb_vlan_tag_get(skb));
}
static inline struct txbd8 *skip_txbd(struct txbd8 *bdp, int stride,
@@ -2812,13 +2812,13 @@ static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb)
* were verified, then we tell the kernel that no
* checksumming is necessary. Otherwise, it is [FIXME]
*/
- if ((fcb->flags & RXFCB_CSUM_MASK) == (RXFCB_CIP | RXFCB_CTU))
+ if ((be16_to_cpu(fcb->flags) & RXFCB_CSUM_MASK) ==
+ (RXFCB_CIP | RXFCB_CTU))
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb_checksum_none_assert(skb);
}
-
/* gfar_process_frame() -- handle one incoming packet if skb isn't NULL. */
static void gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
int amount_pull, struct napi_struct *napi)
@@ -2860,8 +2860,9 @@ static void gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
* RXFCB_VLN is pseudo randomly set.
*/
if (dev->features & NETIF_F_HW_VLAN_CTAG_RX &&
- fcb->flags & RXFCB_VLN)
- __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), fcb->vlctl);
+ be16_to_cpu(fcb->flags) & RXFCB_VLN)
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+ be16_to_cpu(fcb->vlctl));
/* Send the packet up the stack */
napi_gro_receive(napi, skb);
diff --git a/drivers/net/ethernet/freescale/gianfar.h b/drivers/net/ethernet/freescale/gianfar.h
index f792c79..daa1d37 100644
--- a/drivers/net/ethernet/freescale/gianfar.h
+++ b/drivers/net/ethernet/freescale/gianfar.h
@@ -557,8 +557,8 @@ struct txfcb {
u8 ptp; /* Flag to enable tx timestamping */
u8 l4os; /* Level 4 Header Offset */
u8 l3os; /* Level 3 Header Offset */
- u16 phcs; /* Pseudo-header Checksum */
- u16 vlctl; /* VLAN control word */
+ __be16 phcs; /* Pseudo-header Checksum */
+ __be16 vlctl; /* VLAN control word */
};
struct rxbd8
@@ -574,11 +574,11 @@ struct rxbd8
};
struct rxfcb {
- u16 flags;
+ __be16 flags;
u8 rq; /* Receive Queue index */
u8 pro; /* Layer 4 Protocol */
u16 reserved;
- u16 vlctl; /* VLAN control word */
+ __be16 vlctl; /* VLAN control word */
};
struct gianfar_skb_cb {
--
1.7.11.7
--
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