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; }
static int _rmnet_xmit(struct sk_buff *skb, struct net_device *dev) { struct rmnet_private *p = netdev_priv(dev); int sdio_ret; struct QMI_QOS_HDR_S *qmih; u32 opmode; unsigned long flags; if (!netif_carrier_ok(dev)) { pr_err("[%s] %s: channel in reset", dev->name, __func__); goto xmit_out; } /* 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; sdio_ret = msm_sdio_dmux_write(p->ch_id, skb); if (sdio_ret != 0) { pr_err("[%s] %s: write returned error %d", dev->name, __func__, sdio_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: dev_kfree_skb_any(skb); p->stats.tx_errors++; return 0; }
static int _rmnet_xmit(struct sk_buff *skb, struct net_device *dev) { struct rmnet_private *p = netdev_priv(dev); smd_channel_t *ch = p->ch; int smd_ret; struct QMI_QOS_HDR_S *qmih; u32 opmode; unsigned long flags; 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; smd_ret = smd_write(ch, skb->data, skb->len); if (smd_ret != skb->len) { pr_err("[%s] %s: smd_write returned error %d", dev->name, __func__, smd_ret); p->stats.tx_errors++; goto xmit_out; } if (RMNET_IS_MODE_IP(opmode) || 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); xmit_out: dev_kfree_skb_irq(skb); return 0; }
static int _rmnet_xmit(struct sk_buff *skb, struct net_device *dev) { struct rmnet_private *p = netdev_priv(dev); smd_channel_t *ch = p->ch; int smd_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; smd_ret = smd_write(ch, skb->data, skb->len); if (smd_ret != skb->len) { pr_err("%s: smd_write returned error %d", __func__, smd_ret); goto xmit_out; } if (RMNET_IS_MODE_IP(opmode) || count_this_packet(skb->data, skb->len)) { p->stats.tx_packets++; p->stats.tx_bytes += skb->len; #if 0 p->wakeups_xmit += rmnet_cause_wakeup(p); #endif } xmit_out: /* data xmited, safe to release skb */ dev_kfree_skb_irq(skb); return 0; }
static int _rmnet_xmit(struct sk_buff *skb, struct net_device *dev) { struct rmnet_private *p = netdev_priv(dev); 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; return msm_smux_write(p->ch_id, skb, skb->data, skb->len); }
/* Called in soft-irq context */ static void smd_net_data_handler(unsigned long arg) { struct net_device *dev = (struct net_device *) arg; struct rmnet_private *p = netdev_priv(dev); struct sk_buff *skb; void *ptr = 0; int sz; u32 opmode = p->operation_mode; // unsigned long flags; // int max_package_size; for (;;) { sz = smd_cur_packet_size(p->ch); if (sz == 0) break; if (smd_read_avail(p->ch) < sz) break; //ZTE_RIL_WANGCHENG_20110425 start #ifdef CONFIG_ZTE_PLATFORM if (RMNET_IS_MODE_IP(opmode) ? (sz > ((dev->mtu > RMNET_DEFAULT_MTU_LEN)? dev->mtu:RMNET_DEFAULT_MTU_LEN)) : (sz > (((dev->mtu > RMNET_DEFAULT_MTU_LEN)? dev->mtu:RMNET_DEFAULT_MTU_LEN) + ETH_HLEN))) { #else if (RMNET_IS_MODE_IP(opmode) ? (sz > dev->mtu) : (sz > (dev->mtu + ETH_HLEN))) { #endif pr_err("rmnet_recv() discarding %d len (%d mtu)\n", sz, RMNET_IS_MODE_IP(opmode) ? dev->mtu : (dev->mtu + ETH_HLEN)); ptr = 0; } else { skb = dev_alloc_skb(sz + NET_IP_ALIGN); if (skb == NULL) { pr_err("rmnet_recv() cannot allocate skb\n"); } else { skb->dev = dev; skb_reserve(skb, NET_IP_ALIGN); ptr = skb_put(skb, sz); wake_lock_timeout(&p->wake_lock, HZ / 2); if (smd_read(p->ch, ptr, sz) != sz) { pr_err("rmnet_recv() smd lied about avail?!"); ptr = 0; dev_kfree_skb_irq(skb); } else { /* Handle Rx frame format */ //spin_lock_irqsave(&p->lock, flags); //opmode = p->operation_mode; //spin_unlock_irqrestore(&p->lock, flags); if (RMNET_IS_MODE_IP(opmode)) { /* Driver in IP mode */ skb->protocol = rmnet_ip_type_trans(skb, dev); } else { /* Driver in Ethernet mode */ skb->protocol = eth_type_trans(skb, dev); } if (RMNET_IS_MODE_IP(opmode) || count_this_packet(ptr, skb->len)) { #ifdef CONFIG_MSM_RMNET_DEBUG p->wakeups_rcv += rmnet_cause_wakeup(p); #endif p->stats.rx_packets++; p->stats.rx_bytes += skb->len; } netif_rx(skb); } continue; } } if (smd_read(p->ch, ptr, sz) != sz) pr_err("rmnet_recv() smd lied about avail?!"); } } //ZTE_RIL_RJG_20101103 end static DECLARE_TASKLET(smd_net_data_tasklet, smd_net_data_handler, 0); static int _rmnet_xmit(struct sk_buff *skb, struct net_device *dev) { struct rmnet_private *p = netdev_priv(dev); smd_channel_t *ch = p->ch; int smd_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; smd_ret = smd_write(ch, skb->data, skb->len); if (smd_ret != skb->len) { pr_err("%s: smd_write returned error %d", __func__, smd_ret); goto xmit_out; } if (RMNET_IS_MODE_IP(opmode) || 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 } xmit_out: /* data xmited, safe to release skb */ dev_kfree_skb_irq(skb); return 0; } static void _rmnet_resume_flow(unsigned long param) { struct net_device *dev = (struct net_device *)param; struct rmnet_private *p = netdev_priv(dev); struct sk_buff *skb = NULL; unsigned long flags; /* xmit and enable the flow only once even if multiple tasklets were scheduled by smd_net_notify */ spin_lock_irqsave(&p->lock, flags); if (p->skb && (smd_write_avail(p->ch) >= p->skb->len)) { skb = p->skb; p->skb = NULL; spin_unlock_irqrestore(&p->lock, flags); _rmnet_xmit(skb, dev); netif_wake_queue(dev); } else spin_unlock_irqrestore(&p->lock, flags); } static void msm_rmnet_unload_modem(void *pil) { if (pil) pil_put(pil); } static void *msm_rmnet_load_modem(struct net_device *dev) { void *pil; int rc; struct rmnet_private *p = netdev_priv(dev); pil = pil_get("modem"); if (IS_ERR(pil)) pr_err("%s: modem load failed\n", __func__); else if (msm_rmnet_modem_wait) { rc = wait_for_completion_interruptible_timeout( &p->complete, msecs_to_jiffies(msm_rmnet_modem_wait * 1000)); if (!rc) rc = -ETIMEDOUT; if (rc < 0) { pr_err("%s: wait for rmnet port failed %d\n", __func__, rc); msm_rmnet_unload_modem(pil); pil = ERR_PTR(rc); } } return pil; }