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mwifiex: fix rx_pending count imbalance 

RX packets are handled in different paths. Not all paths have
decrement of rx_pending counter. This patch fixes the counter
imbalance.

Signed-off-by: Ujjal Roy <royujjal@gmail.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ujjal Roy 2013-12-02 23:17:53 -08:00 committed by John W. Linville
parent f8eb5ee5f5
commit ca8d6dfc92
6 changed files with 19 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/mwifiex/init.c
View File

@ -643,7 +643,8 @@ mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
if (priv) if (priv)
priv->stats.rx_dropped++; priv->stats.rx_dropped++;
adapter->if_ops.data_complete(adapter, skb); dev_kfree_skb_any(skb);
adapter->if_ops.data_complete(adapter);
} }
} }

2
drivers/net/wireless/mwifiex/main.h
View File

@ -615,7 +615,7 @@ struct mwifiex_if_ops {
void (*cleanup_mpa_buf) (struct mwifiex_adapter *); void (*cleanup_mpa_buf) (struct mwifiex_adapter *);
int (*cmdrsp_complete) (struct mwifiex_adapter *, struct sk_buff *); int (*cmdrsp_complete) (struct mwifiex_adapter *, struct sk_buff *);
int (*event_complete) (struct mwifiex_adapter *, struct sk_buff *); int (*event_complete) (struct mwifiex_adapter *, struct sk_buff *);
int (*data_complete) (struct mwifiex_adapter *, struct sk_buff *); int (*data_complete) (struct mwifiex_adapter *);
int (*init_fw_port) (struct mwifiex_adapter *); int (*init_fw_port) (struct mwifiex_adapter *);
int (*dnld_fw) (struct mwifiex_adapter *, struct mwifiex_fw_image *); int (*dnld_fw) (struct mwifiex_adapter *, struct mwifiex_fw_image *);
void (*card_reset) (struct mwifiex_adapter *); void (*card_reset) (struct mwifiex_adapter *);

11
drivers/net/wireless/mwifiex/sta_rx.c
View File

@ -188,12 +188,7 @@ int mwifiex_process_sta_rx_packet(struct mwifiex_private *priv,
"wrong rx packet: len=%d, rx_pkt_offset=%d, rx_pkt_length=%d\n", "wrong rx packet: len=%d, rx_pkt_offset=%d, rx_pkt_length=%d\n",
skb->len, rx_pkt_offset, rx_pkt_length); skb->len, rx_pkt_offset, rx_pkt_length);
priv->stats.rx_dropped++; priv->stats.rx_dropped++;
if (adapter->if_ops.data_complete)
adapter->if_ops.data_complete(adapter, skb);
else
dev_kfree_skb_any(skb); dev_kfree_skb_any(skb);
return ret; return ret;
} }
@ -247,12 +242,8 @@ int mwifiex_process_sta_rx_packet(struct mwifiex_private *priv,
ret = mwifiex_11n_rx_reorder_pkt(priv, seq_num, local_rx_pd->priority, ret = mwifiex_11n_rx_reorder_pkt(priv, seq_num, local_rx_pd->priority,
ta, (u8) rx_pkt_type, skb); ta, (u8) rx_pkt_type, skb);
if (ret || (rx_pkt_type == PKT_TYPE_BAR)) { if (ret || (rx_pkt_type == PKT_TYPE_BAR))
if (adapter->if_ops.data_complete)
adapter->if_ops.data_complete(adapter, skb);
else
dev_kfree_skb_any(skb); dev_kfree_skb_any(skb);
}
if (ret) if (ret)
priv->stats.rx_dropped++; priv->stats.rx_dropped++;

11
drivers/net/wireless/mwifiex/txrx.c
View File

@ -40,6 +40,7 @@ int mwifiex_handle_rx_packet(struct mwifiex_adapter *adapter,
mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
struct rxpd *local_rx_pd; struct rxpd *local_rx_pd;
struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
int ret;
local_rx_pd = (struct rxpd *) (skb->data); local_rx_pd = (struct rxpd *) (skb->data);
/* Get the BSS number from rxpd, get corresponding priv */ /* Get the BSS number from rxpd, get corresponding priv */
@ -58,9 +59,15 @@ int mwifiex_handle_rx_packet(struct mwifiex_adapter *adapter,
rx_info->bss_type = priv->bss_type; rx_info->bss_type = priv->bss_type;
if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP)
return mwifiex_process_uap_rx_packet(priv, skb); ret = mwifiex_process_uap_rx_packet(priv, skb);
else
ret = mwifiex_process_sta_rx_packet(priv, skb);
return mwifiex_process_sta_rx_packet(priv, skb); /* Decrement RX pending counter for each packet */
if (adapter->if_ops.data_complete)
adapter->if_ops.data_complete(adapter);
return ret;
} }
EXPORT_SYMBOL_GPL(mwifiex_handle_rx_packet); EXPORT_SYMBOL_GPL(mwifiex_handle_rx_packet);

11
drivers/net/wireless/mwifiex/uap_txrx.c
View File

@ -267,12 +267,7 @@ int mwifiex_process_uap_rx_packet(struct mwifiex_private *priv,
skb->len, le16_to_cpu(uap_rx_pd->rx_pkt_offset), skb->len, le16_to_cpu(uap_rx_pd->rx_pkt_offset),
le16_to_cpu(uap_rx_pd->rx_pkt_length)); le16_to_cpu(uap_rx_pd->rx_pkt_length));
priv->stats.rx_dropped++; priv->stats.rx_dropped++;
if (adapter->if_ops.data_complete)
adapter->if_ops.data_complete(adapter, skb);
else
dev_kfree_skb_any(skb); dev_kfree_skb_any(skb);
return 0; return 0;
} }
@ -326,12 +321,8 @@ int mwifiex_process_uap_rx_packet(struct mwifiex_private *priv,
uap_rx_pd->priority, ta, pkt_type, uap_rx_pd->priority, ta, pkt_type,
skb); skb);
if (ret || (rx_pkt_type == PKT_TYPE_BAR)) { if (ret || (rx_pkt_type == PKT_TYPE_BAR))
if (adapter->if_ops.data_complete)
adapter->if_ops.data_complete(adapter, skb);
else
dev_kfree_skb_any(skb); dev_kfree_skb_any(skb);
}
if (ret) if (ret)
priv->stats.rx_dropped++; priv->stats.rx_dropped++;

4
drivers/net/wireless/mwifiex/usb.c
View File

@ -938,11 +938,9 @@ static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter,
return 0; return 0;
} }
static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter, static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter)
struct sk_buff *skb)
{ {
atomic_dec(&adapter->rx_pending); atomic_dec(&adapter->rx_pending);
dev_kfree_skb_any(skb);
return 0; return 0;
} }