2 files changed, 14 insertions, 2 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 5d812de65d9..8b1565453f0 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -2103,6 +2103,13 @@ static struct sk_buff *sky2_receive(struct net_device *dev,
         struct sky2_port *sky2 = netdev_priv(dev);
         struct rx_ring_info *re = sky2->rx_ring + sky2->rx_next;
         struct sk_buff *skb = NULL;
+        u16 count = (status & GMR_FS_LEN) >> 16;
+
+#ifdef SKY2_VLAN_TAG_USED
+        /* Account for vlan tag */
+        if (sky2->vlgrp && (status & GMR_FS_VLAN))
+                count -= VLAN_HLEN;
+#endif
 
         if (unlikely(netif_msg_rx_status(sky2)))
                 printk(KERN_DEBUG PFX "%s: rx slot %u status 0x%x len %d\n",
@@ -2117,7 +2124,8 @@ static struct sk_buff *sky2_receive(struct net_device *dev,
         if (!(status & GMR_FS_RX_OK))
                 goto resubmit;
 
-        if (status >> 16 != length)
+        /* if length reported by DMA does not match PHY, packet was truncated */
+        if (length != count)
                 goto len_mismatch;
 
         if (length < copybreak)
@@ -2133,6 +2141,10 @@ len_mismatch:
         /* Truncation of overlength packets
            causes PHY length to not match MAC length */
         ++sky2->net_stats.rx_length_errors;
+        if (netif_msg_rx_err(sky2) && net_ratelimit())
+                pr_info(PFX "%s: rx length mismatch: length %d status %#x\n",
+                        dev->name, length, status);
+        goto resubmit;
 
 error:
         ++sky2->net_stats.rx_errors;
diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 72e12b7cfa4..3baae48f804 100644
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -1668,7 +1668,7 @@ enum {
 
 /* Receive Frame Status Encoding */
 enum {
-        GMR_FS_LEN      = 0xffff<<16, /* Bit 31..16:    Rx Frame Length */
+        GMR_FS_LEN      = 0x7fff<<16, /* Bit 30..16:    Rx Frame Length */
         GMR_FS_VLAN     = 1<<13, /* VLAN Packet */
         GMR_FS_JABBER   = 1<<12, /* Jabber Packet */
         GMR_FS_UN_SIZE  = 1<<11, /* Undersize Packet */