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mwifiex: modify skb->truesize for PCIE Rx 

We allocate SKB buffers of 4K size to make sure that we process
RX AMSDU of 4K. So when skb->len is lesser than 4K; we should
modify skb->truesize. This resolves an issue where kernel has
allocated packets with 2K assumption and starts dropping packets
for large size data transfer.

This fix is already present for USB; extend it to PCIE.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Avinash Patil 2013-03-04 16:27:56 -08:00 committed by John W. Linville
parent 9931078e36
commit f553e1aad7
1 changed files with 3 additions and 2 deletions
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5
drivers/net/wireless/mwifiex/util.c
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@ -195,7 +195,7 @@ int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb)
skb->protocol = eth_type_trans(skb, priv->netdev);
skb->ip_summed = CHECKSUM_NONE;
/* This is required only in case of 11n and USB as we alloc
/* This is required only in case of 11n and USB/PCIE as we alloc
* a buffer of 4K only if its 11N (to be able to receive 4K
* AMSDU packets). In case of SD we allocate buffers based
* on the size of packet and hence this is not needed.
@ -212,7 +212,8 @@ int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb)
* fragments. Currently we fail the Filesndl-ht.scr script
* for UDP, hence this fix
*/
if ((priv->adapter->iface_type == MWIFIEX_USB) &&
if ((priv->adapter->iface_type == MWIFIEX_USB ||
priv->adapter->iface_type == MWIFIEX_PCIE) &&
(skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE))
skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE);