From f553e1aad797540afddd1a99753a348e1c426ffe Mon Sep 17 00:00:00 2001 From: Avinash Patil Date: Mon, 4 Mar 2013 16:27:56 -0800 Subject: [PATCH] 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 Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/util.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mwifiex/util.c b/drivers/net/wireless/mwifiex/util.c index 21553976b550..54667e65ca47 100644 --- a/drivers/net/wireless/mwifiex/util.c +++ b/drivers/net/wireless/mwifiex/util.c @@ -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); -- 2.11.0