qeth: l3 hw tx csum circumvent hw bug

[pandora-kernel.git] / drivers / s390 / net / qeth_l3_main.c

diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index e227e46..d09b0c4 100644 (file)
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2998,7 +2998,9 @@ static inline void qeth_l3_hdr_csum(struct qeth_card *card,
         */
        if (iph->protocol == IPPROTO_UDP)
                hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
-       hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
+       hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
+               QETH_HDR_EXT_CSUM_HDR_REQ;
+       iph->check = 0;
        if (card->options.performance_stats)
                card->perf_stats.tx_csum++;
 }
@@ -3240,12 +3242,14 @@ tx_drop:
        return NETDEV_TX_OK;
 }
 
-static int qeth_l3_open(struct net_device *dev)
+static int __qeth_l3_open(struct net_device *dev)
 {
        struct qeth_card *card = dev->ml_priv;
        int rc = 0;
 
        QETH_CARD_TEXT(card, 4, "qethopen");
+       if (card->state == CARD_STATE_UP)
+               return rc;
        if (card->state != CARD_STATE_SOFTSETUP)
                return -ENODEV;
        card->data.state = CH_STATE_UP;
@@ -3260,6 +3264,18 @@ static int qeth_l3_open(struct net_device *dev)
        return rc;
 }
 
+static int qeth_l3_open(struct net_device *dev)
+{
+       struct qeth_card *card = dev->ml_priv;
+
+       QETH_CARD_TEXT(card, 5, "qethope_");
+       if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
+               QETH_CARD_TEXT(card, 3, "openREC");
+               return -ERESTARTSYS;
+       }
+       return __qeth_l3_open(dev);
+}
+
 static int qeth_l3_stop(struct net_device *dev)
 {
        struct qeth_card *card = dev->ml_priv;
@@ -3564,7 +3580,7 @@ contin:
                netif_carrier_off(card->dev);
        if (recover_flag == CARD_STATE_RECOVER) {
                if (recovery_mode)
-                       qeth_l3_open(card->dev);
+                       __qeth_l3_open(card->dev);
                else {
                        rtnl_lock();
                        dev_open(card->dev);