C++ (Cpp) msm_bam_dmux_write Examples

Example #1

File: msm_rmnet_bam.c Project: fantomlez/android_kernel_acer_hemingway

static int _rmnet_xmit(struct sk_buff *skb, struct net_device *dev)
{
	struct rmnet_private *p = netdev_priv(dev);
	int bam_ret;
	struct QMI_QOS_HDR_S *qmih;
	u32 opmode;
	unsigned long flags;

	/* For QoS mode, prepend QMI header and assign flow ID from skb->mark */
	spin_lock_irqsave(&p->lock, flags);
	opmode = p->operation_mode;
	spin_unlock_irqrestore(&p->lock, flags);

	if (RMNET_IS_MODE_QOS(opmode)) {
		qmih = (struct QMI_QOS_HDR_S *)
			skb_push(skb, sizeof(struct QMI_QOS_HDR_S));
		qmih->version = 1;
		qmih->flags = 0;
		qmih->flow_id = skb->mark;
	}

	dev->trans_start = jiffies;
	/* if write() succeeds, skb access is unsafe in this process */
	bam_ret = msm_bam_dmux_write(p->ch_id, skb);

	if (bam_ret != 0 && bam_ret != -EAGAIN && bam_ret != -EFAULT) {
		pr_err("[%s] %s: write returned error %d",
			dev->name, __func__, bam_ret);
		return -EPERM;
	}

	return bam_ret;
}

Example #2

static int _rmnet_xmit(struct sk_buff *skb, struct net_device *dev)
{
    struct rmnet_private *p = netdev_priv(dev);
    int bam_ret;
    struct QMI_QOS_HDR_S *qmih;
    u32 opmode;
    unsigned long flags;

    /* For QoS mode, prepend QMI header and assign flow ID from skb->mark */
    spin_lock_irqsave(&p->lock, flags);
    opmode = p->operation_mode;
    spin_unlock_irqrestore(&p->lock, flags);

    if (RMNET_IS_MODE_QOS(opmode)) {
        qmih = (struct QMI_QOS_HDR_S *)
               skb_push(skb, sizeof(struct QMI_QOS_HDR_S));
        qmih->version = 1;
        qmih->flags = 0;
        qmih->flow_id = skb->mark;
    }

    dev->trans_start = jiffies;
    bam_ret = msm_bam_dmux_write(p->ch_id, skb);

    if (bam_ret != 0) {
        pr_err("[%s] %s: write returned error %d",
               dev->name, __func__, bam_ret);
        goto xmit_out;
    }

    if (count_this_packet(skb->data, skb->len)) {
        p->stats.tx_packets++;
        p->stats.tx_bytes += skb->len;
#ifdef CONFIG_MSM_RMNET_DEBUG
        p->wakeups_xmit += rmnet_cause_wakeup(p);
#endif
    }
    DBG1("[%s] Tx packet #%lu len=%d mark=0x%x\n",
         dev->name, p->stats.tx_packets, skb->len, skb->mark);

    return 0;
xmit_out:
    /* data xmited, safe to release skb */
    dev_kfree_skb_any(skb);
    return 0;
}