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authorRon Mercer <ron.mercer@qlogic.com>2009-03-11 11:55:40 +0000
committerDavid S. Miller <davem@davemloft.net>2009-03-13 11:27:23 -0700
commitc3c6496dc3d94d87bb0da86cf0bf48764577bf77 (patch)
tree590533161de2317b27c1af6ebee34b22db08009d
parent9fae6c3f648e38f023b99b5f5a5280907b2e796e (diff)
qlge: bugfix: Increase filter on inbound csum.
Chip does not do UDP checksum when fragmentation occurs. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/qlge/qlge.h1
-rw-r--r--drivers/net/qlge/qlge_main.c38
2 files changed, 27 insertions, 12 deletions
diff --git a/drivers/net/qlge/qlge.h b/drivers/net/qlge/qlge.h
index e6fdce9206c..aff9c5fec73 100644
--- a/drivers/net/qlge/qlge.h
+++ b/drivers/net/qlge/qlge.h
@@ -927,6 +927,7 @@ struct ib_mac_iocb_rsp {
u8 flags1;
#define IB_MAC_IOCB_RSP_OI 0x01 /* Overide intr delay */
#define IB_MAC_IOCB_RSP_I 0x02 /* Disble Intr Generation */
+#define IB_MAC_CSUM_ERR_MASK 0x1c /* A mask to use for csum errs */
#define IB_MAC_IOCB_RSP_TE 0x04 /* Checksum error */
#define IB_MAC_IOCB_RSP_NU 0x08 /* No checksum rcvd */
#define IB_MAC_IOCB_RSP_IE 0x10 /* IPv4 checksum error */
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 8ea72dc60f7..87787b1ecab 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -1436,18 +1436,32 @@ static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_P) {
QPRINTK(qdev, RX_STATUS, DEBUG, "Promiscuous Packet.\n");
}
- if (ib_mac_rsp->flags1 & (IB_MAC_IOCB_RSP_IE | IB_MAC_IOCB_RSP_TE)) {
- QPRINTK(qdev, RX_STATUS, ERR,
- "Bad checksum for this %s packet.\n",
- ((ib_mac_rsp->
- flags2 & IB_MAC_IOCB_RSP_T) ? "TCP" : "UDP"));
- skb->ip_summed = CHECKSUM_NONE;
- } else if (qdev->rx_csum &&
- ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) ||
- ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
- !(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_NU)))) {
- QPRINTK(qdev, RX_STATUS, DEBUG, "RX checksum done!\n");
- skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ skb->protocol = eth_type_trans(skb, ndev);
+ skb->ip_summed = CHECKSUM_NONE;
+
+ /* If rx checksum is on, and there are no
+ * csum or frame errors.
+ */
+ if (qdev->rx_csum &&
+ !(ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) &&
+ !(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK)) {
+ /* TCP frame. */
+ if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) {
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "TCP checksum done!\n");
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ } else if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
+ (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_V4)) {
+ /* Unfragmented ipv4 UDP frame. */
+ struct iphdr *iph = (struct iphdr *) skb->data;
+ if (!(iph->frag_off &
+ cpu_to_be16(IP_MF|IP_OFFSET))) {
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ QPRINTK(qdev, RX_STATUS, DEBUG,
+ "TCP checksum done!\n");
+ }
+ }
}
qdev->stats.rx_packets++;
qdev->stats.rx_bytes += skb->len;