From 4a7c972644c1151f6dd34ff4b5f7eacb239e22ee Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Wed, 18 Jan 2017 17:45:01 +0100 Subject: net: Remove usage of net_device last_rx member The network stack no longer uses the last_rx member of struct net_device since the bonding driver switched to use its own private last_rx in commit 9f242738376d ("bonding: use last_arp_rx in slave_last_rx()"). However, some drivers still (ab)use the field for their own purposes and some driver just update it without actually using it. Previously, there was an accompanying comment for the last_rx member added in commit 4dc89133f49b ("net: add a comment on netdev->last_rx") which asked drivers not to update is, unless really needed. However, this commend was removed in commit f8ff080dacec ("bonding: remove useless updating of slave->dev->last_rx"), so some drivers added later on still did update last_rx. Remove all usage of last_rx and switch three drivers (sky2, atp and smc91c92_cs) which actually read and write it to use their own private copy in netdev_priv. Compile-tested with allyesconfig and allmodconfig on x86 and arm. Cc: Eric Dumazet Cc: Jay Vosburgh Cc: Veaceslav Falico Cc: Andy Gospodarek Cc: Mirko Lindner Cc: Stephen Hemminger Signed-off-by: Tobias Klauser Acked-by: Eric Dumazet Reviewed-by: Jay Vosburgh Signed-off-by: David S. Miller --- drivers/staging/wlan-ng/hfa384x_usb.c | 1 - drivers/staging/wlan-ng/p80211netdev.c | 2 -- 2 files changed, 3 deletions(-) (limited to 'drivers/staging/wlan-ng') diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c index 4fe037aeef12..6134eba5cad4 100644 --- a/drivers/staging/wlan-ng/hfa384x_usb.c +++ b/drivers/staging/wlan-ng/hfa384x_usb.c @@ -3409,7 +3409,6 @@ static void hfa384x_usbin_rx(struct wlandevice *wlandev, struct sk_buff *skb) &usbin->rxfrm.desc.frame_control, hdrlen); skb->dev = wlandev->netdev; - skb->dev->last_rx = jiffies; /* And set the frame length properly */ skb_trim(skb, data_len + hdrlen); diff --git a/drivers/staging/wlan-ng/p80211netdev.c b/drivers/staging/wlan-ng/p80211netdev.c index 73fcf07254fe..53dbbd69e552 100644 --- a/drivers/staging/wlan-ng/p80211netdev.c +++ b/drivers/staging/wlan-ng/p80211netdev.c @@ -252,7 +252,6 @@ static int p80211_convert_to_ether(struct wlandevice *wlandev, } if (skb_p80211_to_ether(wlandev, wlandev->ethconv, skb) == 0) { - skb->dev->last_rx = jiffies; wlandev->netdev->stats.rx_packets++; wlandev->netdev->stats.rx_bytes += skb->len; netif_rx_ni(skb); @@ -287,7 +286,6 @@ static void p80211netdev_rx_bh(unsigned long arg) skb->ip_summed = CHECKSUM_NONE; skb->pkt_type = PACKET_OTHERHOST; skb->protocol = htons(ETH_P_80211_RAW); - dev->last_rx = jiffies; dev->stats.rx_packets++; dev->stats.rx_bytes += skb->len; -- cgit v1.2.3