Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e59bd25d579c143f1b93a33d3243d67abbb15abe
Commit: e59bd25d579c143f1b93a33d3243d67abbb15abe
Parent: 5eba3699a3b2e0d7afa0d4594980bafb1e47e2b4
Author: Ayyappan Veeraiyan <[EMAIL PROTECTED]>
AuthorDate: Fri Feb 1 15:59:09 2008 -0800
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Tue Feb 5 13:31:35 2008 -0500
ixgbe: properly return CHECKSUM_NONE, cleanup csum code
We were not returning CHECKSUM_NONE in a lot of cases which is
wrong. Move common exit points in this function and error code
up before the actual work in this function.
Signed-off-by: Ayyappan Veeraiyan <[EMAIL PROTECTED]>
Signed-off-by: Auke Kok <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/net/ixgbe/ixgbe_main.c | 29 ++++++++++++++++++++++-------
1 files changed, 22 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index c814d9b..ee5ee10 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -304,25 +304,40 @@ static void ixgbe_receive_skb(struct ixgbe_adapter
*adapter,
}
}
+/**
+ * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
+ * @adapter: address of board private structure
+ * @status_err: hardware indication of status of receive
+ * @skb: skb currently being received and modified
+ **/
static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
u32 status_err,
struct sk_buff *skb)
{
skb->ip_summed = CHECKSUM_NONE;
- /* Ignore Checksum bit is set */
+ /* Ignore Checksum bit is set, or rx csum disabled */
if ((status_err & IXGBE_RXD_STAT_IXSM) ||
- !(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
+ !(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
return;
- /* TCP/UDP checksum error bit is set */
- if (status_err & (IXGBE_RXDADV_ERR_TCPE | IXGBE_RXDADV_ERR_IPE)) {
- /* let the stack verify checksum errors */
+
+ /* if IP and error */
+ if ((status_err & IXGBE_RXD_STAT_IPCS) &&
+ (status_err & IXGBE_RXDADV_ERR_IPE)) {
adapter->hw_csum_rx_error++;
return;
}
+
+ if (!(status_err & IXGBE_RXD_STAT_L4CS))
+ return;
+
+ if (status_err & IXGBE_RXDADV_ERR_TCPE) {
+ adapter->hw_csum_rx_error++;
+ return;
+ }
+
/* It must be a TCP or UDP packet with a valid checksum */
- if (status_err & (IXGBE_RXD_STAT_L4CS | IXGBE_RXD_STAT_UDPCS))
- skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
adapter->hw_csum_rx_good++;
}
-
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