Author: nbd Date: 2015-05-06 12:19:22 +0200 (Wed, 06 May 2015) New Revision: 45621
Added: trunk/target/linux/generic/patches-3.18/082-usbnet-Fix-tx_packets-stat-for-FLAG_MULTI_FRAME-driv.patch Log: kernel: backport upstream usbnet fix (fixes #19455) Signed-off-by: Felix Fietkau <[email protected]> Added: trunk/target/linux/generic/patches-3.18/082-usbnet-Fix-tx_packets-stat-for-FLAG_MULTI_FRAME-driv.patch =================================================================== --- trunk/target/linux/generic/patches-3.18/082-usbnet-Fix-tx_packets-stat-for-FLAG_MULTI_FRAME-driv.patch (rev 0) +++ trunk/target/linux/generic/patches-3.18/082-usbnet-Fix-tx_packets-stat-for-FLAG_MULTI_FRAME-driv.patch 2015-05-06 10:19:22 UTC (rev 45621) @@ -0,0 +1,107 @@ +From: Ben Hutchings <[email protected]> +Date: Thu, 26 Feb 2015 19:34:37 +0000 +Subject: [PATCH] usbnet: Fix tx_packets stat for FLAG_MULTI_FRAME drivers +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Currently the usbnet core does not update the tx_packets statistic for +drivers with FLAG_MULTI_PACKET and there is no hook in the TX +completion path where they could do this. + +cdc_ncm and dependent drivers are bumping tx_packets stat on the +transmit path while asix and sr9800 aren't updating it at all. + +Add a packet count in struct skb_data so these drivers can fill it +in, initialise it to 1 for other drivers, and add the packet count +to the tx_packets statistic on completion. + +Signed-off-by: Ben Hutchings <[email protected]> +Tested-by: Bjørn Mork <[email protected]> +Signed-off-by: David S. Miller <[email protected]> +--- + +--- a/drivers/net/usb/asix_common.c ++++ b/drivers/net/usb/asix_common.c +@@ -188,6 +188,8 @@ struct sk_buff *asix_tx_fixup(struct usb + memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes)); + skb_put(skb, sizeof(padbytes)); + } ++ ++ usbnet_set_skb_tx_stats(skb, 1); + return skb; + } + +--- a/drivers/net/usb/cdc_ncm.c ++++ b/drivers/net/usb/cdc_ncm.c +@@ -1172,7 +1172,6 @@ cdc_ncm_fill_tx_frame(struct usbnet *dev + + /* return skb */ + ctx->tx_curr_skb = NULL; +- dev->net->stats.tx_packets += ctx->tx_curr_frame_num; + + /* keep private stats: framing overhead and number of NTBs */ + ctx->tx_overhead += skb_out->len - ctx->tx_curr_frame_payload; +@@ -1184,6 +1183,8 @@ cdc_ncm_fill_tx_frame(struct usbnet *dev + */ + dev->net->stats.tx_bytes -= skb_out->len - ctx->tx_curr_frame_payload; + ++ usbnet_set_skb_tx_stats(skb_out, n); ++ + return skb_out; + + exit_no_skb: +--- a/drivers/net/usb/sr9800.c ++++ b/drivers/net/usb/sr9800.c +@@ -144,6 +144,7 @@ static struct sk_buff *sr_tx_fixup(struc + skb_put(skb, sizeof(padbytes)); + } + ++ usbnet_set_skb_tx_stats(skb, 1); + return skb; + } + +--- a/drivers/net/usb/usbnet.c ++++ b/drivers/net/usb/usbnet.c +@@ -1189,8 +1189,7 @@ static void tx_complete (struct urb *urb + struct usbnet *dev = entry->dev; + + if (urb->status == 0) { +- if (!(dev->driver_info->flags & FLAG_MULTI_PACKET)) +- dev->net->stats.tx_packets++; ++ dev->net->stats.tx_packets += entry->packets; + dev->net->stats.tx_bytes += entry->length; + } else { + dev->net->stats.tx_errors++; +@@ -1349,6 +1348,8 @@ netdev_tx_t usbnet_start_xmit (struct sk + urb->transfer_flags |= URB_ZERO_PACKET; + } + entry->length = urb->transfer_buffer_length = length; ++ if (!(info->flags & FLAG_MULTI_PACKET)) ++ usbnet_set_skb_tx_stats(skb, 1); + + spin_lock_irqsave(&dev->txq.lock, flags); + retval = usb_autopm_get_interface_async(dev->intf); +--- a/include/linux/usb/usbnet.h ++++ b/include/linux/usb/usbnet.h +@@ -228,8 +228,20 @@ struct skb_data { /* skb->cb is one of t + struct usbnet *dev; + enum skb_state state; + size_t length; ++ unsigned long packets; + }; + ++/* Drivers that set FLAG_MULTI_PACKET must call this in their ++ * tx_fixup method before returning an skb. ++ */ ++static inline void ++usbnet_set_skb_tx_stats(struct sk_buff *skb, unsigned long packets) ++{ ++ struct skb_data *entry = (struct skb_data *) skb->cb; ++ ++ entry->packets = packets; ++} ++ + extern int usbnet_open(struct net_device *net); + extern int usbnet_stop(struct net_device *net); + extern netdev_tx_t usbnet_start_xmit(struct sk_buff *skb, _______________________________________________ openwrt-commits mailing list [email protected] https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-commits
