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ethernet/intel: Use eth_skb_pad and skb_put_padto helpers 

Update the Intel Ethernet drivers to use eth_skb_pad() and skb_put_padto
instead of doing their own implementations of the function.

Also this cleans up two other spots where skb_pad was called but the length
and tail pointers were being manipulated directly instead of just having
the padding length added via __skb_put.

Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2014-12-03 08:17:39 -08:00 committed by David S. Miller
parent 9c0c112422
commit a94d9e224e
7 changed files with 22 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/intel/e1000/e1000_main.c
View File

@ -3136,12 +3136,8 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
* packets may get corrupted during padding by HW.
* To WA this issue, pad all small packets manually.
*/
if (skb->len < ETH_ZLEN) {
if (skb_pad(skb, ETH_ZLEN - skb->len))
if (eth_skb_pad(skb))
return NETDEV_TX_OK;
skb->len = ETH_ZLEN;
skb_set_tail_pointer(skb, ETH_ZLEN);
}
mss = skb_shinfo(skb)->gso_size;
/* The controller does a simple calculation to

6
drivers/net/ethernet/intel/e1000e/netdev.c
View File

@ -5554,12 +5554,8 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
/* The minimum packet size with TCTL.PSP set is 17 bytes so
* pad skb in order to meet this minimum size requirement
*/
if (unlikely(skb->len < 17)) {
if (skb_pad(skb, 17 - skb->len))
if (skb_put_padto(skb, 17))
return NETDEV_TX_OK;
skb->len = 17;
skb_set_tail_pointer(skb, 17);
}
mss = skb_shinfo(skb)->gso_size;
if (mss) {

9
drivers/net/ethernet/intel/fm10k/fm10k_main.c
View File

@ -578,14 +578,9 @@ static bool fm10k_cleanup_headers(struct fm10k_ring *rx_ring,
if (skb_is_nonlinear(skb))
fm10k_pull_tail(rx_ring, rx_desc, skb);
/* if skb_pad returns an error the skb was freed */
if (unlikely(skb->len < 60)) {
int pad_len = 60 - skb->len;
if (skb_pad(skb, pad_len))
/* if eth_skb_pad returns an error the skb was freed */
if (eth_skb_pad(skb))
return true;
__skb_put(skb, pad_len);
}
return false;
}

6
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View File

@ -2399,12 +2399,8 @@ netdev_tx_t i40e_lan_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
/* hardware can't handle really short frames, hardware padding works
* beyond this point
*/
if (unlikely(skb->len < I40E_MIN_TX_LEN)) {
if (skb_pad(skb, I40E_MIN_TX_LEN - skb->len))
if (skb_put_padto(skb, I40E_MIN_TX_LEN))
return NETDEV_TX_OK;
skb->len = I40E_MIN_TX_LEN;
skb_set_tail_pointer(skb, I40E_MIN_TX_LEN);
}
return i40e_xmit_frame_ring(skb, tx_ring);
}

15
drivers/net/ethernet/intel/igb/igb_main.c
View File

@ -5091,12 +5091,8 @@ static netdev_tx_t igb_xmit_frame(struct sk_buff *skb,
/* The minimum packet size with TCTL.PSP set is 17 so pad the skb
* in order to meet this minimum size requirement.
*/
if (unlikely(skb->len < 17)) {
if (skb_pad(skb, 17 - skb->len))
if (skb_put_padto(skb, 17))
return NETDEV_TX_OK;
skb->len = 17;
skb_set_tail_pointer(skb, 17);
}
return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb));
}
@ -6850,14 +6846,9 @@ static bool igb_cleanup_headers(struct igb_ring *rx_ring,
if (skb_is_nonlinear(skb))
igb_pull_tail(rx_ring, rx_desc, skb);
/* if skb_pad returns an error the skb was freed */
if (unlikely(skb->len < 60)) {
int pad_len = 60 - skb->len;
if (skb_pad(skb, pad_len))
/* if eth_skb_pad returns an error the skb was freed */
if (eth_skb_pad(skb))
return true;
__skb_put(skb, pad_len);
}
return false;
}

15
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -1774,14 +1774,9 @@ static bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring,
return false;
#endif
/* if skb_pad returns an error the skb was freed */
if (unlikely(skb->len < 60)) {
int pad_len = 60 - skb->len;
if (skb_pad(skb, pad_len))
/* if eth_skb_pad returns an error the skb was freed */
if (eth_skb_pad(skb))
return true;
__skb_put(skb, pad_len);
}
return false;
}
@ -7334,12 +7329,8 @@ static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb,
* The minimum packet size for olinfo paylen is 17 so pad the skb
* in order to meet this minimum size requirement.
*/
if (unlikely(skb->len < 17)) {
if (skb_pad(skb, 17 - skb->len))
if (skb_put_padto(skb, 17))
return NETDEV_TX_OK;
skb->len = 17;
skb_set_tail_pointer(skb, 17);
}
tx_ring = ring ? ring : adapter->tx_ring[skb->queue_mapping];

9
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
View File

@ -616,14 +616,9 @@ static bool ixgbevf_cleanup_headers(struct ixgbevf_ring *rx_ring,
if (skb_is_nonlinear(skb))
ixgbevf_pull_tail(rx_ring, skb);
/* if skb_pad returns an error the skb was freed */
if (unlikely(skb->len < 60)) {
int pad_len = 60 - skb->len;
if (skb_pad(skb, pad_len))
/* if eth_skb_pad returns an error the skb was freed */
if (eth_skb_pad(skb))
return true;
__skb_put(skb, pad_len);
}
return false;
}