ixgbevf: Add fix to VF to handle multi-descriptor buffers
This change fixes the ixgbevf driver so that it can correctly drop a frame
should it receive a jumbo frame.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 37bbd86..2ba15ae 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -433,11 +433,21 @@
if (!(staterr & IXGBE_RXD_STAT_EOP)) {
skb->next = next_buffer->skb;
- skb->next->prev = skb;
+ IXGBE_CB(skb->next)->prev = skb;
adapter->non_eop_descs++;
goto next_desc;
}
+ /* we should not be chaining buffers, if we did drop the skb */
+ if (IXGBE_CB(skb)->prev) {
+ do {
+ struct sk_buff *this = skb;
+ skb = IXGBE_CB(skb)->prev;
+ dev_kfree_skb(this);
+ } while (skb);
+ goto next_desc;
+ }
+
/* ERR_MASK will only have valid bits if EOP set */
if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) {
dev_kfree_skb_irq(skb);
@@ -1439,7 +1449,7 @@
rx_buffer_info->skb = NULL;
do {
struct sk_buff *this = skb;
- skb = skb->prev;
+ skb = IXGBE_CB(skb)->prev;
dev_kfree_skb(this);
} while (skb);
}