diff options
Diffstat (limited to 'drivers/atm/nicstar.c')
-rw-r--r-- | drivers/atm/nicstar.c | 167 |
1 files changed, 79 insertions, 88 deletions
diff --git a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c index b2a7b754fd14..c57e20dcb0f8 100644 --- a/drivers/atm/nicstar.c +++ b/drivers/atm/nicstar.c @@ -214,8 +214,7 @@ static int __devinit ns_init_card(int i, struct pci_dev *pcidev); static void __devinit ns_init_card_error(ns_dev *card, int error); static scq_info *get_scq(int size, u32 scd); static void free_scq(scq_info *scq, struct atm_vcc *vcc); -static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1, - u32 handle2, u32 addr2); +static void push_rxbufs(ns_dev *, struct sk_buff *); static irqreturn_t ns_irq_handler(int irq, void *dev_id, struct pt_regs *regs); static int ns_open(struct atm_vcc *vcc); static void ns_close(struct atm_vcc *vcc); @@ -766,6 +765,7 @@ static int __devinit ns_init_card(int i, struct pci_dev *pcidev) ns_init_card_error(card, error); return error; } + NS_SKB_CB(hb)->buf_type = BUF_NONE; skb_queue_tail(&card->hbpool.queue, hb); card->hbpool.count++; } @@ -786,9 +786,10 @@ static int __devinit ns_init_card(int i, struct pci_dev *pcidev) ns_init_card_error(card, error); return error; } + NS_SKB_CB(lb)->buf_type = BUF_LG; skb_queue_tail(&card->lbpool.queue, lb); skb_reserve(lb, NS_SMBUFSIZE); - push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0); + push_rxbufs(card, lb); /* Due to the implementation of push_rxbufs() this is 1, not 0 */ if (j == 1) { @@ -822,9 +823,10 @@ static int __devinit ns_init_card(int i, struct pci_dev *pcidev) ns_init_card_error(card, error); return error; } + NS_SKB_CB(sb)->buf_type = BUF_SM; skb_queue_tail(&card->sbpool.queue, sb); skb_reserve(sb, NS_AAL0_HEADER); - push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0); + push_rxbufs(card, sb); } /* Test for strange behaviour which leads to crashes */ if ((bcount = ns_stat_sfbqc_get(readl(card->membase + STAT))) < card->sbnr.min) @@ -852,6 +854,7 @@ static int __devinit ns_init_card(int i, struct pci_dev *pcidev) ns_init_card_error(card, error); return error; } + NS_SKB_CB(iovb)->buf_type = BUF_NONE; skb_queue_tail(&card->iovpool.queue, iovb); card->iovpool.count++; } @@ -1078,12 +1081,18 @@ static void free_scq(scq_info *scq, struct atm_vcc *vcc) /* The handles passed must be pointers to the sk_buff containing the small or large buffer(s) cast to u32. */ -static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1, - u32 handle2, u32 addr2) +static void push_rxbufs(ns_dev *card, struct sk_buff *skb) { + struct ns_skb_cb *cb = NS_SKB_CB(skb); + u32 handle1, addr1; + u32 handle2, addr2; u32 stat; unsigned long flags; + /* *BARF* */ + handle2 = addr2 = 0; + handle1 = (u32)skb; + addr1 = (u32)virt_to_bus(skb->data); #ifdef GENERAL_DEBUG if (!addr1) @@ -1093,7 +1102,7 @@ static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1, stat = readl(card->membase + STAT); card->sbfqc = ns_stat_sfbqc_get(stat); card->lbfqc = ns_stat_lfbqc_get(stat); - if (type == BUF_SM) + if (cb->buf_type == BUF_SM) { if (!addr2) { @@ -1111,7 +1120,7 @@ static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1, } } } - else /* type == BUF_LG */ + else /* buf_type == BUF_LG */ { if (!addr2) { @@ -1132,26 +1141,26 @@ static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1, if (addr2) { - if (type == BUF_SM) + if (cb->buf_type == BUF_SM) { if (card->sbfqc >= card->sbnr.max) { - skb_unlink((struct sk_buff *) handle1); + skb_unlink((struct sk_buff *) handle1, &card->sbpool.queue); dev_kfree_skb_any((struct sk_buff *) handle1); - skb_unlink((struct sk_buff *) handle2); + skb_unlink((struct sk_buff *) handle2, &card->sbpool.queue); dev_kfree_skb_any((struct sk_buff *) handle2); return; } else card->sbfqc += 2; } - else /* (type == BUF_LG) */ + else /* (buf_type == BUF_LG) */ { if (card->lbfqc >= card->lbnr.max) { - skb_unlink((struct sk_buff *) handle1); + skb_unlink((struct sk_buff *) handle1, &card->lbpool.queue); dev_kfree_skb_any((struct sk_buff *) handle1); - skb_unlink((struct sk_buff *) handle2); + skb_unlink((struct sk_buff *) handle2, &card->lbpool.queue); dev_kfree_skb_any((struct sk_buff *) handle2); return; } @@ -1166,12 +1175,12 @@ static void push_rxbufs(ns_dev *card, u32 type, u32 handle1, u32 addr1, writel(handle2, card->membase + DR2); writel(addr1, card->membase + DR1); writel(handle1, card->membase + DR0); - writel(NS_CMD_WRITE_FREEBUFQ | (u32) type, card->membase + CMD); + writel(NS_CMD_WRITE_FREEBUFQ | cb->buf_type, card->membase + CMD); spin_unlock_irqrestore(&card->res_lock, flags); XPRINTK("nicstar%d: Pushing %s buffers at 0x%x and 0x%x.\n", card->index, - (type == BUF_SM ? "small" : "large"), addr1, addr2); + (cb->buf_type == BUF_SM ? "small" : "large"), addr1, addr2); } if (!card->efbie && card->sbfqc >= card->sbnr.min && @@ -1322,9 +1331,10 @@ static irqreturn_t ns_irq_handler(int irq, void *dev_id, struct pt_regs *regs) card->efbie = 0; break; } + NS_SKB_CB(sb)->buf_type = BUF_SM; skb_queue_tail(&card->sbpool.queue, sb); skb_reserve(sb, NS_AAL0_HEADER); - push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0); + push_rxbufs(card, sb); } card->sbfqc = i; process_rsq(card); @@ -1348,9 +1358,10 @@ static irqreturn_t ns_irq_handler(int irq, void *dev_id, struct pt_regs *regs) card->efbie = 0; break; } + NS_SKB_CB(lb)->buf_type = BUF_LG; skb_queue_tail(&card->lbpool.queue, lb); skb_reserve(lb, NS_SMBUFSIZE); - push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0); + push_rxbufs(card, lb); } card->lbfqc = i; process_rsq(card); @@ -2202,7 +2213,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) memcpy(sb->tail, cell, ATM_CELL_PAYLOAD); skb_put(sb, ATM_CELL_PAYLOAD); ATM_SKB(sb)->vcc = vcc; - do_gettimeofday(&sb->stamp); + __net_timestamp(sb); vcc->push(vcc, sb); atomic_inc(&vcc->stats->rx); cell += ATM_CELL_PAYLOAD; @@ -2227,6 +2238,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) recycle_rx_buf(card, skb); return; } + NS_SKB_CB(iovb)->buf_type = BUF_NONE; } else if (--card->iovpool.count < card->iovnr.min) @@ -2234,6 +2246,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) struct sk_buff *new_iovb; if ((new_iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC)) != NULL) { + NS_SKB_CB(iovb)->buf_type = BUF_NONE; skb_queue_tail(&card->iovpool.queue, new_iovb); card->iovpool.count++; } @@ -2264,7 +2277,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) if (NS_SKB(iovb)->iovcnt == 1) { - if (skb->list != &card->sbpool.queue) + if (NS_SKB_CB(skb)->buf_type != BUF_SM) { printk("nicstar%d: Expected a small buffer, and this is not one.\n", card->index); @@ -2278,7 +2291,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) } else /* NS_SKB(iovb)->iovcnt >= 2 */ { - if (skb->list != &card->lbpool.queue) + if (NS_SKB_CB(skb)->buf_type != BUF_LG) { printk("nicstar%d: Expected a large buffer, and this is not one.\n", card->index); @@ -2322,8 +2335,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) /* skb points to a small buffer */ if (!atm_charge(vcc, skb->truesize)) { - push_rxbufs(card, BUF_SM, (u32) skb, (u32) virt_to_bus(skb->data), - 0, 0); + push_rxbufs(card, skb); atomic_inc(&vcc->stats->rx_drop); } else @@ -2334,7 +2346,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) skb->destructor = ns_sb_destructor; #endif /* NS_USE_DESTRUCTORS */ ATM_SKB(skb)->vcc = vcc; - do_gettimeofday(&skb->stamp); + __net_timestamp(skb); vcc->push(vcc, skb); atomic_inc(&vcc->stats->rx); } @@ -2350,8 +2362,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) { if (!atm_charge(vcc, sb->truesize)) { - push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), - 0, 0); + push_rxbufs(card, sb); atomic_inc(&vcc->stats->rx_drop); } else @@ -2362,21 +2373,19 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) sb->destructor = ns_sb_destructor; #endif /* NS_USE_DESTRUCTORS */ ATM_SKB(sb)->vcc = vcc; - do_gettimeofday(&sb->stamp); + __net_timestamp(sb); vcc->push(vcc, sb); atomic_inc(&vcc->stats->rx); } - push_rxbufs(card, BUF_LG, (u32) skb, - (u32) virt_to_bus(skb->data), 0, 0); + push_rxbufs(card, skb); } else /* len > NS_SMBUFSIZE, the usual case */ { if (!atm_charge(vcc, skb->truesize)) { - push_rxbufs(card, BUF_LG, (u32) skb, - (u32) virt_to_bus(skb->data), 0, 0); + push_rxbufs(card, skb); atomic_inc(&vcc->stats->rx_drop); } else @@ -2389,13 +2398,12 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) memcpy(skb->data, sb->data, NS_SMBUFSIZE); skb_put(skb, len - NS_SMBUFSIZE); ATM_SKB(skb)->vcc = vcc; - do_gettimeofday(&skb->stamp); + __net_timestamp(skb); vcc->push(vcc, skb); atomic_inc(&vcc->stats->rx); } - push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), - 0, 0); + push_rxbufs(card, sb); } @@ -2430,6 +2438,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) card->hbpool.count++; } } + NS_SKB_CB(hb)->buf_type = BUF_NONE; } else if (--card->hbpool.count < card->hbnr.min) @@ -2437,6 +2446,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) struct sk_buff *new_hb; if ((new_hb = dev_alloc_skb(NS_HBUFSIZE)) != NULL) { + NS_SKB_CB(new_hb)->buf_type = BUF_NONE; skb_queue_tail(&card->hbpool.queue, new_hb); card->hbpool.count++; } @@ -2444,6 +2454,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) { if ((new_hb = dev_alloc_skb(NS_HBUFSIZE)) != NULL) { + NS_SKB_CB(new_hb)->buf_type = BUF_NONE; skb_queue_tail(&card->hbpool.queue, new_hb); card->hbpool.count++; } @@ -2473,8 +2484,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) remaining = len - iov->iov_len; iov++; /* Free the small buffer */ - push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), - 0, 0); + push_rxbufs(card, sb); /* Copy all large buffers to the huge buffer and free them */ for (j = 1; j < NS_SKB(iovb)->iovcnt; j++) @@ -2485,8 +2495,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) skb_put(hb, tocopy); iov++; remaining -= tocopy; - push_rxbufs(card, BUF_LG, (u32) lb, - (u32) virt_to_bus(lb->data), 0, 0); + push_rxbufs(card, lb); } #ifdef EXTRA_DEBUG if (remaining != 0 || hb->len != len) @@ -2496,7 +2505,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe) #ifdef NS_USE_DESTRUCTORS hb->destructor = ns_hb_destructor; #endif /* NS_USE_DESTRUCTORS */ - do_gettimeofday(&hb->stamp); + __net_timestamp(hb); vcc->push(vcc, hb); atomic_inc(&vcc->stats->rx); } @@ -2527,9 +2536,10 @@ static void ns_sb_destructor(struct sk_buff *sb) sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); if (sb == NULL) break; + NS_SKB_CB(sb)->buf_type = BUF_SM; skb_queue_tail(&card->sbpool.queue, sb); skb_reserve(sb, NS_AAL0_HEADER); - push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0); + push_rxbufs(card, sb); } while (card->sbfqc < card->sbnr.min); } @@ -2550,9 +2560,10 @@ static void ns_lb_destructor(struct sk_buff *lb) lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); if (lb == NULL) break; + NS_SKB_CB(lb)->buf_type = BUF_LG; skb_queue_tail(&card->lbpool.queue, lb); skb_reserve(lb, NS_SMBUFSIZE); - push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0); + push_rxbufs(card, lb); } while (card->lbfqc < card->lbnr.min); } @@ -2569,6 +2580,7 @@ static void ns_hb_destructor(struct sk_buff *hb) hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); if (hb == NULL) break; + NS_SKB_CB(hb)->buf_type = BUF_NONE; skb_queue_tail(&card->hbpool.queue, hb); card->hbpool.count++; } @@ -2577,45 +2589,25 @@ static void ns_hb_destructor(struct sk_buff *hb) #endif /* NS_USE_DESTRUCTORS */ - static void recycle_rx_buf(ns_dev *card, struct sk_buff *skb) { - if (skb->list == &card->sbpool.queue) - push_rxbufs(card, BUF_SM, (u32) skb, (u32) virt_to_bus(skb->data), 0, 0); - else if (skb->list == &card->lbpool.queue) - push_rxbufs(card, BUF_LG, (u32) skb, (u32) virt_to_bus(skb->data), 0, 0); - else - { - printk("nicstar%d: What kind of rx buffer is this?\n", card->index); - dev_kfree_skb_any(skb); - } -} + struct ns_skb_cb *cb = NS_SKB_CB(skb); + if (unlikely(cb->buf_type == BUF_NONE)) { + printk("nicstar%d: What kind of rx buffer is this?\n", card->index); + dev_kfree_skb_any(skb); + } else + push_rxbufs(card, skb); +} static void recycle_iovec_rx_bufs(ns_dev *card, struct iovec *iov, int count) { - struct sk_buff *skb; - - for (; count > 0; count--) - { - skb = (struct sk_buff *) (iov++)->iov_base; - if (skb->list == &card->sbpool.queue) - push_rxbufs(card, BUF_SM, (u32) skb, (u32) virt_to_bus(skb->data), - 0, 0); - else if (skb->list == &card->lbpool.queue) - push_rxbufs(card, BUF_LG, (u32) skb, (u32) virt_to_bus(skb->data), - 0, 0); - else - { - printk("nicstar%d: What kind of rx buffer is this?\n", card->index); - dev_kfree_skb_any(skb); - } - } + while (count-- > 0) + recycle_rx_buf(card, (struct sk_buff *) (iov++)->iov_base); } - static void recycle_iov_buf(ns_dev *card, struct sk_buff *iovb) { if (card->iovpool.count < card->iovnr.max) @@ -2631,7 +2623,7 @@ static void recycle_iov_buf(ns_dev *card, struct sk_buff *iovb) static void dequeue_sm_buf(ns_dev *card, struct sk_buff *sb) { - skb_unlink(sb); + skb_unlink(sb, &card->sbpool.queue); #ifdef NS_USE_DESTRUCTORS if (card->sbfqc < card->sbnr.min) #else @@ -2640,10 +2632,10 @@ static void dequeue_sm_buf(ns_dev *card, struct sk_buff *sb) struct sk_buff *new_sb; if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { + NS_SKB_CB(new_sb)->buf_type = BUF_SM; skb_queue_tail(&card->sbpool.queue, new_sb); skb_reserve(new_sb, NS_AAL0_HEADER); - push_rxbufs(card, BUF_SM, (u32) new_sb, - (u32) virt_to_bus(new_sb->data), 0, 0); + push_rxbufs(card, new_sb); } } if (card->sbfqc < card->sbnr.init) @@ -2652,10 +2644,10 @@ static void dequeue_sm_buf(ns_dev *card, struct sk_buff *sb) struct sk_buff *new_sb; if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { + NS_SKB_CB(new_sb)->buf_type = BUF_SM; skb_queue_tail(&card->sbpool.queue, new_sb); skb_reserve(new_sb, NS_AAL0_HEADER); - push_rxbufs(card, BUF_SM, (u32) new_sb, - (u32) virt_to_bus(new_sb->data), 0, 0); + push_rxbufs(card, new_sb); } } } @@ -2664,7 +2656,7 @@ static void dequeue_sm_buf(ns_dev *card, struct sk_buff *sb) static void dequeue_lg_buf(ns_dev *card, struct sk_buff *lb) { - skb_unlink(lb); + skb_unlink(lb, &card->lbpool.queue); #ifdef NS_USE_DESTRUCTORS if (card->lbfqc < card->lbnr.min) #else @@ -2673,10 +2665,10 @@ static void dequeue_lg_buf(ns_dev *card, struct sk_buff *lb) struct sk_buff *new_lb; if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { + NS_SKB_CB(new_lb)->buf_type = BUF_LG; skb_queue_tail(&card->lbpool.queue, new_lb); skb_reserve(new_lb, NS_SMBUFSIZE); - push_rxbufs(card, BUF_LG, (u32) new_lb, - (u32) virt_to_bus(new_lb->data), 0, 0); + push_rxbufs(card, new_lb); } } if (card->lbfqc < card->lbnr.init) @@ -2685,10 +2677,10 @@ static void dequeue_lg_buf(ns_dev *card, struct sk_buff *lb) struct sk_buff *new_lb; if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { + NS_SKB_CB(new_lb)->buf_type = BUF_LG; skb_queue_tail(&card->lbpool.queue, new_lb); skb_reserve(new_lb, NS_SMBUFSIZE); - push_rxbufs(card, BUF_LG, (u32) new_lb, - (u32) virt_to_bus(new_lb->data), 0, 0); + push_rxbufs(card, new_lb); } } } @@ -2880,9 +2872,10 @@ static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg) sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); if (sb == NULL) return -ENOMEM; + NS_SKB_CB(sb)->buf_type = BUF_SM; skb_queue_tail(&card->sbpool.queue, sb); skb_reserve(sb, NS_AAL0_HEADER); - push_rxbufs(card, BUF_SM, (u32) sb, (u32) virt_to_bus(sb->data), 0, 0); + push_rxbufs(card, sb); } break; @@ -2894,9 +2887,10 @@ static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg) lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); if (lb == NULL) return -ENOMEM; + NS_SKB_CB(lb)->buf_type = BUF_LG; skb_queue_tail(&card->lbpool.queue, lb); skb_reserve(lb, NS_SMBUFSIZE); - push_rxbufs(card, BUF_LG, (u32) lb, (u32) virt_to_bus(lb->data), 0, 0); + push_rxbufs(card, lb); } break; @@ -2923,6 +2917,7 @@ static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg) hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); if (hb == NULL) return -ENOMEM; + NS_SKB_CB(hb)->buf_type = BUF_NONE; ns_grab_int_lock(card, flags); skb_queue_tail(&card->hbpool.queue, hb); card->hbpool.count++; @@ -2953,6 +2948,7 @@ static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg) iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); if (iovb == NULL) return -ENOMEM; + NS_SKB_CB(iovb)->buf_type = BUF_NONE; ns_grab_int_lock(card, flags); skb_queue_tail(&card->iovpool.queue, iovb); card->iovpool.count++; @@ -2979,17 +2975,12 @@ static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg) } - static void which_list(ns_dev *card, struct sk_buff *skb) { - printk("It's a %s buffer.\n", skb->list == &card->sbpool.queue ? - "small" : skb->list == &card->lbpool.queue ? "large" : - skb->list == &card->hbpool.queue ? "huge" : - skb->list == &card->iovpool.queue ? "iovec" : "unknown"); + printk("skb buf_type: 0x%08x\n", NS_SKB_CB(skb)->buf_type); } - static void ns_poll(unsigned long arg) { int i; |