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[NET]: Kill skb->list

Sfoglia il codice sorgente 
Remove the "list" member of struct sk_buff, as it is entirely
redundant.  All SKB list removal callers know which list the
SKB is on, so storing this in sk_buff does nothing other than
taking up some space.

Two tricky bits were SCTP, which I took care of, and two ATM
drivers which Francois Romieu <romieu@fr.zoreil.com> fixed
up.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
This commit is contained in:
David S. Miller
2005-08-09 19:25:21 -07:00
committato da David S. Miller
parent 6869c4d8e0
commit 8728b834b2
29 ha cambiato i file con 229 aggiunte e 283 eliminazioni
Scarica il file Patch Scarica il file Diff Expand all files Collapse all files

157
drivers/atm/nicstar.c
Vedi File

@@ -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);
@@ -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
@@ -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
@@ -2367,16 +2378,14 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe)
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
@@ -2394,8 +2403,7 @@ static void dequeue_rx(ns_dev *card, ns_rsqe *rsqe)
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)
@@ -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;

16
drivers/atm/nicstar.h
Vedi File

@@ -103,8 +103,14 @@
#define NS_IOREMAP_SIZE 4096
#define BUF_SM 0x00000000 /* These two are used for push_rxbufs() */
#define BUF_LG 0x00000001 /* CMD, Write_FreeBufQ, LBUF bit */
/*
* BUF_XX distinguish the Rx buffers depending on their (small/large) size.
* BUG_SM and BUG_LG are both used by the driver and the device.
* BUF_NONE is only used by the driver.
*/
#define BUF_SM 0x00000000 /* These two are used for push_rxbufs() */
#define BUF_LG 0x00000001 /* CMD, Write_FreeBufQ, LBUF bit */
#define BUF_NONE 0xffffffff /* Software only: */
#define NS_HBUFSIZE 65568 /* Size of max. AAL5 PDU */
#define NS_MAX_IOVECS (2 + (65568 - NS_SMBUFSIZE) / \
@@ -684,6 +690,12 @@ enum ns_regs
/* Device driver structures ***************************************************/
struct ns_skb_cb {
u32 buf_type; /* BUF_SM/BUF_LG/BUF_NONE */
};
#define NS_SKB_CB(skb) ((struct ns_skb_cb *)((skb)->cb))
typedef struct tsq_info
{
void *org;

8
drivers/atm/zatm.c
Vedi File

@@ -417,10 +417,12 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
chan = (here[3] & uPD98401_AAL5_CHAN) >>
uPD98401_AAL5_CHAN_SHIFT;
if (chan < zatm_dev->chans && zatm_dev->rx_map[chan]) {
int pos = ZATM_VCC(vcc)->pool;
vcc = zatm_dev->rx_map[chan];
if (skb == zatm_dev->last_free[ZATM_VCC(vcc)->pool])
zatm_dev->last_free[ZATM_VCC(vcc)->pool] = NULL;
skb_unlink(skb);
if (skb == zatm_dev->last_free[pos])
zatm_dev->last_free[pos] = NULL;
skb_unlink(skb, zatm_dev->pool + pos);
}
else {
printk(KERN_ERR DEV_LABEL "(itf %d): RX indication "