/*Rx Callback, Called in Work Queue context*/ static void sdio_recv_notify(void *dev, struct sk_buff *skb) { struct rmnet_private *p = netdev_priv(dev); unsigned long flags; u32 opmode; if (skb) { skb->dev = dev; /* 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(skb->data, 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); } else pr_err("[lte] Error - %s: No skb received", __func__); }
static void smux_read_done(void *rcv_dev, const void *meta_data) { struct rmnet_private *p; struct net_device *dev = rcv_dev; u32 opmode; unsigned long flags; struct sk_buff *skb = NULL; const struct smux_meta_read *read_meta_info = meta_data; if (!dev || !read_meta_info) { DBG1("%s:invalid read_done callback recieved", __func__); return; } p = netdev_priv(dev); skb = (struct sk_buff *) read_meta_info->pkt_priv; if (!skb || skb->dev != dev) { DBG1("%s: ERR:skb pointer NULL in READ_DONE CALLBACK", __func__); return; } /* 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(skb->data, 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; } DBG2("[%s] Rx packet #%lu len=%d\n", dev->name, p->stats.rx_packets, skb->len); /* Deliver to network stack */ netif_rx(skb); return; }
static void bam_write_done(void *dev, struct sk_buff *skb) { struct rmnet_private *p = netdev_priv(dev); u32 opmode = p->operation_mode; unsigned long flags; DBG1("%s: write complete\n", __func__); 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", ((struct net_device *)(dev))->name, p->stats.tx_packets, skb->len, skb->mark); dev_kfree_skb_any(skb); spin_lock_irqsave(&p->tx_queue_lock, flags); if (netif_queue_stopped(dev) && msm_bam_dmux_is_ch_low(p->ch_id)) { DBG0("%s: Low WM hit, waking queue=%p\n", __func__, skb); netif_wake_queue(dev); } spin_unlock_irqrestore(&p->tx_queue_lock, flags); }
/* Rx Callback, Called in Work Queue context */ static void sdio_recv_notify(void *dev, struct sk_buff *skb) { struct rmnet_private *p = netdev_priv(dev); unsigned long flags; u32 opmode; if (skb) { skb->dev = dev; /* 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(skb->data, 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; } DBG1("[%s] Rx packet #%lu len=%d\n", ((struct net_device *)dev)->name, p->stats.rx_packets, skb->len); /* Deliver to network stack */ netif_rx(skb); } else { spin_lock_irqsave(&p->lock, flags); if (!sdio_update_reset_state((struct net_device *)dev)) pr_err("[%s] %s: No skb received", ((struct net_device *)dev)->name, __func__); spin_unlock_irqrestore(&p->lock, flags); } }
static void smux_write_done(void *dev, const void *meta_data) { struct rmnet_private *p = netdev_priv(dev); u32 opmode; struct sk_buff *skb = NULL; const struct smux_meta_write *write_meta_info = meta_data; unsigned long flags; if (!dev || !write_meta_info) { DBG1("%s: ERR:invalid WRITE_DONE callback recieved", __func__); return; } skb = (struct sk_buff *) write_meta_info->pkt_priv; if (!skb) { DBG1("%s: ERR:skb pointer NULL in WRITE_DONE" " CALLBACK", __func__); return; } spin_lock_irqsave(&p->lock, flags); opmode = p->operation_mode; spin_unlock_irqrestore(&p->lock, flags); DBG1("%s: write complete\n", __func__); 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", ((struct net_device *)(dev))->name, p->stats.tx_packets, skb->len, skb->mark); dev_kfree_skb_any(skb); spin_lock_irqsave(&p->tx_queue_lock, flags); if (netif_queue_stopped(dev) && msm_smux_is_ch_low(p->ch_id)) { DBG0("%s: Low WM hit, waking queue=%p\n", __func__, skb); netif_wake_queue(dev); } spin_unlock_irqrestore(&p->tx_queue_lock, flags); }
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] %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: /* data xmited, safe to release skb */ dev_kfree_skb_irq(skb); return 0; }
static void bam_write_done(void *dev, struct sk_buff *skb) { struct rmnet_private *p = netdev_priv(dev); u32 opmode = p->operation_mode; unsigned long flags; DBG1("%s: write complete\n", __func__); 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 } #if defined(CONFIG_ARCH_ACER_MSM8960) cancel_delayed_work_sync(&fast_dormancy_rmnet->fast_dormancy_work); if (kernel_is_in_earlysuspend()) schedule_delayed_work(&fast_dormancy_rmnet->fast_dormancy_work, msecs_to_jiffies(3000)); else if (fd_screen_on_delay != 0) { schedule_delayed_work(&fast_dormancy_rmnet->fast_dormancy_work, msecs_to_jiffies(fd_screen_on_delay*1000)); } #endif DBG1("[%s] Tx packet #%lu len=%d mark=0x%x\n", ((struct net_device *)(dev))->name, p->stats.tx_packets, skb->len, skb->mark); dev_kfree_skb_any(skb); spin_lock_irqsave(&p->tx_queue_lock, flags); if (netif_queue_stopped(dev) && msm_bam_dmux_is_ch_low(p->ch_id)) { DBG0("%s: Low WM hit, waking queue=%p\n", __func__, skb); netif_wake_queue(dev); } spin_unlock_irqrestore(&p->tx_queue_lock, flags); }
/* 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; for (;;) { sz = smd_cur_packet_size(p->ch); if (sz == 0) break; if (smd_read_avail(p->ch) < sz) break; skb = dev_alloc_skb(sz + NET_IP_ALIGN); if (skb == NULL) { pr_err("[%s] rmnet_recv() cannot allocate skb\n", dev->name); /* out of memory, reschedule a later attempt */ smd_net_data_tasklet.data = (unsigned long)dev; tasklet_schedule(&smd_net_data_tasklet); break; } 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("[%s] rmnet_recv() smd lied about avail?!", dev->name); 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; } DBG1("[%s] Rx packet #%lu len=%d\n", dev->name, p->stats.rx_packets, skb->len); /* Deliver to network stack */ netif_rx(skb); } continue; } if (smd_read(p->ch, ptr, sz) != sz) pr_err("[%s] rmnet_recv() smd lied about avail?!", dev->name); } }
/* 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; }
/* 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; for (;;) { sz = smd_cur_packet_size(p->ch); if (sz == 0) break; if (smd_read_avail(p->ch) < sz) break; if (RMNET_IS_MODE_IP(opmode) ? (sz > dev->mtu) : (sz > (dev->mtu + ETH_HLEN))) { 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)) { #if 0 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?!"); } }
void rmnet_smux_notify(void *priv, int event_type, const void *metadata) { struct rmnet_private *p; struct net_device *dev; unsigned long flags; struct sk_buff *skb = NULL; u32 opmode; const struct smux_meta_disconnected *ssr_info; const struct smux_meta_read *read_meta_info; const struct smux_meta_write *write_meta_info = metadata; if (!priv) DBG0("%s: priv(cookie) NULL, ignoring notification:" " %d\n", __func__, event_type); switch (event_type) { case SMUX_CONNECTED: p = netdev_priv(priv); dev = priv; DBG0("[%s] SMUX_CONNECTED event dev:%s\n", __func__, dev->name); netif_carrier_on(dev); netif_start_queue(dev); spin_lock_irqsave(&p->lock, flags); p->device_state = DEVICE_ACTIVE; spin_unlock_irqrestore(&p->lock, flags); break; case SMUX_DISCONNECTED: p = netdev_priv(priv); dev = priv; ssr_info = metadata; DBG0("[%s] SMUX_DISCONNECTED event dev:%s\n", __func__, dev->name); if (ssr_info && ssr_info->is_ssr == 1) DBG0("SSR detected on :%s\n", dev->name); netif_carrier_off(dev); netif_stop_queue(dev); spin_lock_irqsave(&p->lock, flags); p->device_state = DEVICE_INACTIVE; spin_unlock_irqrestore(&p->lock, flags); break; case SMUX_READ_DONE: smux_read_done(priv, metadata); break; case SMUX_READ_FAIL: p = netdev_priv(priv); dev = priv; read_meta_info = metadata; if (!dev || !read_meta_info) { DBG1("%s: ERR:invalid read failed callback" " recieved", __func__); return; } skb = (struct sk_buff *) read_meta_info->pkt_priv; if (!skb) { DBG1("%s: ERR:skb pointer NULL in read fail" " CALLBACK", __func__); return; } DBG0("%s: read failed\n", __func__); opmode = p->operation_mode; if (RMNET_IS_MODE_IP(opmode) || count_this_packet(skb->data, skb->len)) p->stats.rx_dropped++; dev_kfree_skb_any(skb); break; case SMUX_WRITE_DONE: smux_write_done(priv, metadata); break; case SMUX_WRITE_FAIL: p = netdev_priv(priv); dev = priv; write_meta_info = metadata; if (!dev || !write_meta_info) { DBG1("%s: ERR:invalid WRITE_DONE" "callback recieved", __func__); return; } skb = (struct sk_buff *) write_meta_info->pkt_priv; if (!skb) { DBG1("%s: ERR:skb pointer NULL in" " WRITE_DONE CALLBACK", __func__); return; } DBG0("%s: write failed\n", __func__); opmode = p->operation_mode; if (RMNET_IS_MODE_IP(opmode) || count_this_packet(skb->data, skb->len)) { p->stats.tx_dropped++; } dev_kfree_skb_any(skb); break; case SMUX_LOW_WM_HIT: dev = priv; p = netdev_priv(priv); DBG0("[%s] Low WM hit dev:%s\n", __func__, dev->name); spin_lock_irqsave(&p->tx_queue_lock, flags); netif_wake_queue(dev); spin_unlock_irqrestore(&p->tx_queue_lock, flags); break; case SMUX_HIGH_WM_HIT: dev = priv; p = netdev_priv(priv); DBG0("[%s] High WM hit dev:%s\n", __func__, dev->name); spin_lock_irqsave(&p->tx_queue_lock, flags); netif_stop_queue(dev); spin_unlock_irqrestore(&p->tx_queue_lock, flags); break; default: dev = priv; DBG0("[%s] Invalid event:%d received on" " dev: %s\n", __func__, event_type, dev->name); break; } return; }