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ixgbevf: make sure all frames fit minimum size requirements

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Similar to commit a50c29dd09
("ixgbe: Make certain that all frames fit minimum size requirements")

Make sure that any packet we attempt to transmit will meet minimum
size requirements.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Emil Tantilov 2018-01-30 16:51:38 -08:00 committed by Jeff Kirsher
parent 1ab37e12e3
commit 5cc0f1c0dc
1 changed files with 25 additions and 5 deletions
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30
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
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@ -3779,11 +3779,10 @@ static int ixgbevf_maybe_stop_tx(struct ixgbevf_ring *tx_ring, int size)
return __ixgbevf_maybe_stop_tx(tx_ring, size);
}
static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
static int ixgbevf_xmit_frame_ring(struct sk_buff *skb,
struct ixgbevf_ring *tx_ring)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct ixgbevf_tx_buffer *first;
struct ixgbevf_ring *tx_ring;
int tso;
u32 tx_flags = 0;
u16 count = TXD_USE_COUNT(skb_headlen(skb));
@ -3798,8 +3797,6 @@ static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
return NETDEV_TX_OK;
}
tx_ring = adapter->tx_ring[skb->queue_mapping];
/* need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
* + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
* + 2 desc gap to keep tail from touching head,
@ -3852,6 +3849,29 @@ out_drop:
return NETDEV_TX_OK;
}
static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
struct ixgbevf_ring *tx_ring;
if (skb->len <= 0) {
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
/* The minimum packet size for olinfo paylen is 17 so pad the skb
* in order to meet this minimum size requirement.
*/
if (skb->len < 17) {
if (skb_padto(skb, 17))
return NETDEV_TX_OK;
skb->len = 17;
}
tx_ring = adapter->tx_ring[skb->queue_mapping];
return ixgbevf_xmit_frame_ring(skb, tx_ring);
}
/**
* ixgbevf_set_mac - Change the Ethernet Address of the NIC
* @netdev: network interface device structure