netdev - Re: [PATCH 2/2] flexcan: Fix CAN_RAW_RECV_OWN_MSGS and CAN_RAW

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 03 Nov 2011 11:03:46 +0100
From:	Oliver Hartkopp <socketcan@...tkopp.net>
To:	Marc Kleine-Budde <mkl@...gutronix.de>
CC:	kurt.van.dijck@....be, netdev@...r.kernel.org,
	linux-can@...r.kernel.org, Reuben.Dowle@...ico.com
Subject: Re: [PATCH 2/2] flexcan: Fix CAN_RAW_RECV_OWN_MSGS and CAN_RAW_LOOPBACK

On 03.11.2011 10:47, Marc Kleine-Budde wrote:

> @@ -609,9 +605,10 @@ static irqreturn_t flexcan_irq(int irq, void *dev_id)
>  
>  	/* transmission complete interrupt */
>  	if (reg_iflag1 & (1 << FLEXCAN_TX_BUF_ID)) {
> -		/* tx_bytes is incremented in flexcan_start_xmit */
> +		stats->tx_bytes += can_get_echo_skb(dev, 0);
>  		stats->tx_packets++;
>  		flexcan_write((1 << FLEXCAN_TX_BUF_ID), &regs->iflag1);
> +		can_get_echo_skb(dev, 0);
>  		netif_wake_queue(dev);
>  	}


What's the reason for the second can_get_echo_skb() here?

IIRC the skb is already netif_rx'ed and consumed by the first attempt.

Regards,
Oliver
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html