[PATCH][2.4] more atm updates backported from 2.5

From: chas williams (chas@cmf.nrl.navy.mil)
Date: Thu Jun 26 2003 - 19:24:12 EST


[atm]: ixmicro puts esi in different location

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.1006 -> 1.1007
# drivers/atm/nicstar.c 1.10 -> 1.11
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/06/25 chas@relax.cmf.nrl.navy.mil 1.1007
# ixmicro puts esi in different location
# --------------------------------------------
#
diff -Nru a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c
--- a/drivers/atm/nicstar.c Thu Jun 26 07:09:21 2003
+++ b/drivers/atm/nicstar.c Thu Jun 26 07:09:21 2003
@@ -941,9 +941,14 @@
       return error;
    }
       
- if (ns_parse_mac(mac[i], card->atmdev->esi))
+ if (ns_parse_mac(mac[i], card->atmdev->esi)) {
       nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET,
                          card->atmdev->esi, 6);
+ if (memcmp(card->atmdev->esi, "\x00\x00\x00\x00\x00\x00", 6) == 0) {
+ nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT,
+ card->atmdev->esi, 6);
+ }
+ }
 
    printk("nicstar%d: MAC address %02X:%02X:%02X:%02X:%02X:%02X\n", i,
           card->atmdev->esi[0], card->atmdev->esi[1], card->atmdev->esi[2],

[atm]: remove iovcnt member in struct atm_skb

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.1007 -> 1.1008
# drivers/atm/horizon.c 1.3 -> 1.4
# net/atm/lec.c 1.11 -> 1.12
# net/atm/pppoatm.c 1.4 -> 1.5
# drivers/atm/nicstar.c 1.11 -> 1.12
# drivers/atm/eni.c 1.6 -> 1.7
# drivers/atm/zatm.c 1.5 -> 1.6
# net/atm/mpc.c 1.4 -> 1.5
# include/linux/atmdev.h 1.6 -> 1.7
# drivers/atm/nicstar.h 1.3 -> 1.4
# net/atm/clip.c 1.4 -> 1.5
# net/sched/sch_atm.c 1.4 -> 1.5
# drivers/atm/idt77252.c 1.5 -> 1.6
# drivers/atm/iphase.c 1.15 -> 1.16
# net/atm/br2684.c 1.2 -> 1.3
# net/atm/common.c 1.11 -> 1.12
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/06/25 chas@relax.cmf.nrl.navy.mil 1.1008
# remove iovcnt member in struct atm_skb
# --------------------------------------------
#
diff -Nru a/drivers/atm/eni.c b/drivers/atm/eni.c
--- a/drivers/atm/eni.c Thu Jun 26 07:09:58 2003
+++ b/drivers/atm/eni.c Thu Jun 26 07:09:58 2003
@@ -1101,9 +1101,9 @@
         dma_rd = eni_in(MID_DMA_RD_TX);
         dma_size = 3; /* JK for descriptor and final fill, plus final size
                          mis-alignment fix */
-DPRINTK("iovcnt = %d\n",ATM_SKB(skb)->iovcnt);
- if (!ATM_SKB(skb)->iovcnt) dma_size += 5;
- else dma_size += 5*ATM_SKB(skb)->iovcnt;
+DPRINTK("iovcnt = %d\n",skb_shinfo(skb)->nr_frags);
+ if (!skb_shinfo(skb)->nr_frags) dma_size += 5;
+ else dma_size += 5*(skb_shinfo(skb)->nr_frags+1);
         if (dma_size > TX_DMA_BUF) {
                 printk(KERN_CRIT DEV_LABEL "(itf %d): needs %d DMA entries "
                     "(got only %d)\n",vcc->dev->number,dma_size,TX_DMA_BUF);
@@ -1124,15 +1124,20 @@
              MID_DMA_COUNT_SHIFT) | (tx->index << MID_DMA_CHAN_SHIFT) |
              MID_DT_JK;
         j++;
- if (!ATM_SKB(skb)->iovcnt)
+ if (!skb_shinfo(skb)->nr_frags)
                 if (aal5) put_dma(tx->index,eni_dev->dma,&j,paddr,skb->len);
                 else put_dma(tx->index,eni_dev->dma,&j,paddr+4,skb->len-4);
         else {
 DPRINTK("doing direct send\n"); /* @@@ well, this doesn't work anyway */
- for (i = 0; i < ATM_SKB(skb)->iovcnt; i++)
- put_dma(tx->index,eni_dev->dma,&j,(unsigned long)
- ((struct iovec *) skb->data)[i].iov_base,
- ((struct iovec *) skb->data)[i].iov_len);
+ for (i = -1; i < skb_shinfo(skb)->nr_frags; i++)
+ if (i == -1)
+ put_dma(tx->index,eni_dev->dma,&j,(unsigned long)
+ skb->data,
+ skb->len - skb->data_len);
+ else
+ put_dma(tx->index,eni_dev->dma,&j,(unsigned long)
+ skb_shinfo(skb)->frags[i].page + skb_shinfo(skb)->frags[i].page_offset,
+ skb_shinfo(skb)->frags[i].size);
         }
         if (skb->len & 3)
                 put_dma(tx->index,eni_dev->dma,&j,zeroes,4-(skb->len & 3));
diff -Nru a/drivers/atm/horizon.c b/drivers/atm/horizon.c
--- a/drivers/atm/horizon.c Thu Jun 26 07:09:58 2003
+++ b/drivers/atm/horizon.c Thu Jun 26 07:09:58 2003
@@ -1765,17 +1765,20 @@
   
   {
     unsigned int tx_len = skb->len;
- unsigned int tx_iovcnt = ATM_SKB(skb)->iovcnt;
+ unsigned int tx_iovcnt = skb_shinfo(skb)->nr_frags;
     // remember this so we can free it later
     dev->tx_skb = skb;
     
     if (tx_iovcnt) {
       // scatter gather transfer
       dev->tx_regions = tx_iovcnt;
- dev->tx_iovec = (struct iovec *) skb->data;
+ dev->tx_iovec = 0; /* @@@ needs rewritten */
       dev->tx_bytes = 0;
       PRINTD (DBG_TX|DBG_BUS, "TX start scatter-gather transfer (iovec %p, len %d)",
               skb->data, tx_len);
+ tx_release (dev);
+ hrz_kfree_skb (skb);
+ return -EIO;
     } else {
       // simple transfer
       dev->tx_regions = 0;
diff -Nru a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
--- a/drivers/atm/idt77252.c Thu Jun 26 07:09:58 2003
+++ b/drivers/atm/idt77252.c Thu Jun 26 07:09:58 2003
@@ -1988,7 +1988,7 @@
                 return -EINVAL;
         }
 
- if (ATM_SKB(skb)->iovcnt != 0) {
+ if (skb_shinfo(skb)->nr_frags != 0) {
                 printk("%s: No scatter-gather yet.\n", card->name);
                 atomic_inc(&vcc->stats->tx_err);
                 dev_kfree_skb(skb);
@@ -2026,7 +2026,6 @@
                 return -ENOMEM;
         }
         atomic_add(skb->truesize + ATM_PDU_OVHD, &vcc->sk->wmem_alloc);
- ATM_SKB(skb)->iovcnt = 0;
 
         memcpy(skb_put(skb, 52), cell, 52);
 
diff -Nru a/drivers/atm/iphase.c b/drivers/atm/iphase.c
--- a/drivers/atm/iphase.c Thu Jun 26 07:09:58 2003
+++ b/drivers/atm/iphase.c Thu Jun 26 07:09:58 2003
@@ -1186,7 +1186,6 @@
         skb_put(skb,len);
         // pwang_test
         ATM_SKB(skb)->vcc = vcc;
- ATM_SKB(skb)->iovcnt = 0;
         ATM_DESC(skb) = desc;
         skb_queue_tail(&iadev->rx_dma_q, skb);
 
diff -Nru a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c
--- a/drivers/atm/nicstar.c Thu Jun 26 07:09:58 2003
+++ b/drivers/atm/nicstar.c Thu Jun 26 07:09:58 2003
@@ -1664,9 +1664,9 @@
                 card->index);
          iovb = vc->rx_iov;
          recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data,
- ATM_SKB(iovb)->iovcnt);
- ATM_SKB(iovb)->iovcnt = 0;
- ATM_SKB(iovb)->vcc = NULL;
+ NS_SKB(iovb)->iovcnt);
+ NS_SKB(iovb)->iovcnt = 0;
+ NS_SKB(iovb)->vcc = NULL;
          ns_grab_int_lock(card, flags);
          recycle_iov_buf(card, iovb);
          spin_unlock_irqrestore(&card->int_lock, flags);
@@ -1864,7 +1864,7 @@
       return -EINVAL;
    }
    
- if (ATM_SKB(skb)->iovcnt != 0)
+ if (skb_shinfo(skb)->nr_frags != 0)
    {
       printk("nicstar%d: No scatter-gather yet.\n", card->index);
       atomic_inc(&vcc->stats->tx_err);
@@ -2289,30 +2289,30 @@
             }
          }
       vc->rx_iov = iovb;
- ATM_SKB(iovb)->iovcnt = 0;
+ NS_SKB(iovb)->iovcnt = 0;
       iovb->len = 0;
       iovb->tail = iovb->data = iovb->head;
- ATM_SKB(iovb)->vcc = vcc;
+ NS_SKB(iovb)->vcc = vcc;
       /* IMPORTANT: a pointer to the sk_buff containing the small or large
                     buffer is stored as iovec base, NOT a pointer to the
                     small or large buffer itself. */
    }
- else if (ATM_SKB(iovb)->iovcnt >= NS_MAX_IOVECS)
+ else if (NS_SKB(iovb)->iovcnt >= NS_MAX_IOVECS)
    {
       printk("nicstar%d: received too big AAL5 SDU.\n", card->index);
       atomic_inc(&vcc->stats->rx_err);
       recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, NS_MAX_IOVECS);
- ATM_SKB(iovb)->iovcnt = 0;
+ NS_SKB(iovb)->iovcnt = 0;
       iovb->len = 0;
       iovb->tail = iovb->data = iovb->head;
- ATM_SKB(iovb)->vcc = vcc;
+ NS_SKB(iovb)->vcc = vcc;
    }
- iov = &((struct iovec *) iovb->data)[ATM_SKB(iovb)->iovcnt++];
+ iov = &((struct iovec *) iovb->data)[NS_SKB(iovb)->iovcnt++];
    iov->iov_base = (void *) skb;
    iov->iov_len = ns_rsqe_cellcount(rsqe) * 48;
    iovb->len += iov->iov_len;
 
- if (ATM_SKB(iovb)->iovcnt == 1)
+ if (NS_SKB(iovb)->iovcnt == 1)
    {
       if (skb->list != &card->sbpool.queue)
       {
@@ -2326,7 +2326,7 @@
          return;
       }
    }
- else /* ATM_SKB(iovb)->iovcnt >= 2 */
+ else /* NS_SKB(iovb)->iovcnt >= 2 */
    {
       if (skb->list != &card->lbpool.queue)
       {
@@ -2335,7 +2335,7 @@
          which_list(card, skb);
          atomic_inc(&vcc->stats->rx_err);
          recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data,
- ATM_SKB(iovb)->iovcnt);
+ NS_SKB(iovb)->iovcnt);
          vc->rx_iov = NULL;
          recycle_iov_buf(card, iovb);
          return;
@@ -2359,7 +2359,7 @@
             printk(".\n");
          atomic_inc(&vcc->stats->rx_err);
          recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data,
- ATM_SKB(iovb)->iovcnt);
+ NS_SKB(iovb)->iovcnt);
          vc->rx_iov = NULL;
          recycle_iov_buf(card, iovb);
          return;
@@ -2367,7 +2367,7 @@
 
       /* By this point we (hopefully) have a complete SDU without errors. */
 
- if (ATM_SKB(iovb)->iovcnt == 1) /* Just a small buffer */
+ if (NS_SKB(iovb)->iovcnt == 1) /* Just a small buffer */
       {
          /* skb points to a small buffer */
          if (!atm_charge(vcc, skb->truesize))
@@ -2389,7 +2389,7 @@
             atomic_inc(&vcc->stats->rx);
          }
       }
- else if (ATM_SKB(iovb)->iovcnt == 2) /* One small plus one large buffer */
+ else if (NS_SKB(iovb)->iovcnt == 2) /* One small plus one large buffer */
       {
          struct sk_buff *sb;
 
@@ -2466,7 +2466,7 @@
                printk("nicstar%d: Out of huge buffers.\n", card->index);
                atomic_inc(&vcc->stats->rx_drop);
                recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data,
- ATM_SKB(iovb)->iovcnt);
+ NS_SKB(iovb)->iovcnt);
                vc->rx_iov = NULL;
                recycle_iov_buf(card, iovb);
                return;
@@ -2504,7 +2504,7 @@
 
          if (!atm_charge(vcc, hb->truesize))
          {
- recycle_iovec_rx_bufs(card, iov, ATM_SKB(iovb)->iovcnt);
+ recycle_iovec_rx_bufs(card, iov, NS_SKB(iovb)->iovcnt);
             if (card->hbpool.count < card->hbnr.max)
             {
                skb_queue_tail(&card->hbpool.queue, hb);
@@ -2527,7 +2527,7 @@
                         0, 0);
 
             /* Copy all large buffers to the huge buffer and free them */
- for (j = 1; j < ATM_SKB(iovb)->iovcnt; j++)
+ for (j = 1; j < NS_SKB(iovb)->iovcnt; j++)
             {
                lb = (struct sk_buff *) iov->iov_base;
                tocopy = MIN(remaining, iov->iov_len);
diff -Nru a/drivers/atm/nicstar.h b/drivers/atm/nicstar.h
--- a/drivers/atm/nicstar.h Thu Jun 26 07:09:58 2003
+++ b/drivers/atm/nicstar.h Thu Jun 26 07:09:58 2003
@@ -96,6 +96,7 @@
 /* ESI stuff ******************************************************************/
 
 #define NICSTAR_EPROM_MAC_ADDR_OFFSET 0x6C
+#define NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT 0xF6
 
 
 /* #defines *******************************************************************/
@@ -747,6 +748,15 @@
                                                   SCD. 0x00000000 for UBR/VBR/ABR */
    int tbd_count;
 } vc_map;
+
+
+struct ns_skb_data
+{
+ struct atm_vcc *vcc;
+ int iovcnt;
+};
+
+#define NS_SKB(skb) (((struct ns_skb_data *) (skb)->cb))
 
 
 typedef struct ns_dev
diff -Nru a/drivers/atm/zatm.c b/drivers/atm/zatm.c
--- a/drivers/atm/zatm.c Thu Jun 26 07:09:58 2003
+++ b/drivers/atm/zatm.c Thu Jun 26 07:09:58 2003
@@ -827,10 +827,10 @@
         vcc = ATM_SKB(skb)->vcc;
         zatm_dev = ZATM_DEV(vcc->dev);
         zatm_vcc = ZATM_VCC(vcc);
- EVENT("iovcnt=%d\n",ATM_SKB(skb)->iovcnt,0);
+ EVENT("iovcnt=%d\n",skb_shinfo(skb)->nr_frags,0);
         save_flags(flags);
         cli();
- if (!ATM_SKB(skb)->iovcnt) {
+ if (!skb_shinfo(skb)->nr_frags) {
                 if (zatm_vcc->txing == RING_ENTRIES-1) {
                         restore_flags(flags);
                         return RING_BUSY;
diff -Nru a/include/linux/atmdev.h b/include/linux/atmdev.h
--- a/include/linux/atmdev.h Thu Jun 26 07:09:58 2003
+++ b/include/linux/atmdev.h Thu Jun 26 07:09:58 2003
@@ -404,7 +404,6 @@
 
 struct atm_skb_data {
         struct atm_vcc *vcc; /* ATM VCC */
- int iovcnt; /* 0 for "normal" operation */
         unsigned long atm_options; /* ATM layer options */
 };
 
diff -Nru a/net/atm/br2684.c b/net/atm/br2684.c
--- a/net/atm/br2684.c Thu Jun 26 07:09:58 2003
+++ b/net/atm/br2684.c Thu Jun 26 07:09:58 2003
@@ -189,7 +189,6 @@
                 return 0;
                 }
         atomic_add(skb->truesize, &atmvcc->sk->wmem_alloc);
- ATM_SKB(skb)->iovcnt = 0;
         ATM_SKB(skb)->atm_options = atmvcc->atm_options;
         brdev->stats.tx_packets++;
         brdev->stats.tx_bytes += skb->len;
diff -Nru a/net/atm/clip.c b/net/atm/clip.c
--- a/net/atm/clip.c Thu Jun 26 07:09:58 2003
+++ b/net/atm/clip.c Thu Jun 26 07:09:58 2003
@@ -427,7 +427,6 @@
                 ((u16 *) here)[3] = skb->protocol;
         }
         atomic_add(skb->truesize,&vcc->sk->wmem_alloc);
- ATM_SKB(skb)->iovcnt = 0;
         ATM_SKB(skb)->atm_options = vcc->atm_options;
         entry->vccs->last_use = jiffies;
         DPRINTK("atm_skb(%p)->vcc(%p)->dev(%p)\n",skb,vcc,vcc->dev);
diff -Nru a/net/atm/common.c b/net/atm/common.c
--- a/net/atm/common.c Thu Jun 26 07:09:58 2003
+++ b/net/atm/common.c Thu Jun 26 07:09:58 2003
@@ -397,28 +397,6 @@
                     (unsigned long) buff,eff_len);
         DPRINTK("RcvM %d -= %d\n",atomic_read(&vcc->sk->rmem_alloc),skb->truesize);
         atm_return(vcc,skb->truesize);
- if (ATM_SKB(skb)->iovcnt) { /* @@@ hack */
- /* iovcnt set, use scatter-gather for receive */
- int el, cnt;
- struct iovec *iov = (struct iovec *)skb->data;
- unsigned char *p = (unsigned char *)buff;
-
- el = eff_len;
- error = 0;
- for (cnt = 0; (cnt < ATM_SKB(skb)->iovcnt) && el; cnt++) {
-/*printk("s-g???: %p -> %p (%d)\n",iov->iov_base,p,iov->iov_len);*/
- error = copy_to_user(p,iov->iov_base,
- (iov->iov_len > el) ? el : iov->iov_len) ?
- -EFAULT : 0;
- if (error) break;
- p += iov->iov_len;
- el -= (iov->iov_len > el)?el:iov->iov_len;
- iov++;
- }
- if (!vcc->dev->ops->free_rx_skb) kfree_skb(skb);
- else vcc->dev->ops->free_rx_skb(vcc, skb);
- return error ? error : eff_len;
- }
         error = copy_to_user(buff,skb->data,eff_len) ? -EFAULT : 0;
         if (!vcc->dev->ops->free_rx_skb) kfree_skb(skb);
         else vcc->dev->ops->free_rx_skb(vcc, skb);
@@ -478,7 +456,6 @@
         remove_wait_queue(&vcc->sleep,&wait);
         if (error) return error;
         skb->dev = NULL; /* for paths shared with net_device interfaces */
- ATM_SKB(skb)->iovcnt = 0;
         ATM_SKB(skb)->atm_options = vcc->atm_options;
         if (copy_from_user(skb_put(skb,size),buff,size)) {
                 kfree_skb(skb);
diff -Nru a/net/atm/lec.c b/net/atm/lec.c
--- a/net/atm/lec.c Thu Jun 26 07:09:58 2003
+++ b/net/atm/lec.c Thu Jun 26 07:09:58 2003
@@ -341,7 +341,6 @@
                         lec_h->h_dest[0], lec_h->h_dest[1], lec_h->h_dest[2],
                         lec_h->h_dest[3], lec_h->h_dest[4], lec_h->h_dest[5]);
                 ATM_SKB(skb2)->vcc = send_vcc;
- ATM_SKB(skb2)->iovcnt = 0;
                 ATM_SKB(skb2)->atm_options = send_vcc->atm_options;
                 DPRINTK("%s:sending to vpi:%d vci:%d\n", dev->name,
                         send_vcc->vpi, send_vcc->vci);
@@ -357,7 +356,6 @@
         }
 
         ATM_SKB(skb)->vcc = send_vcc;
- ATM_SKB(skb)->iovcnt = 0;
         ATM_SKB(skb)->atm_options = send_vcc->atm_options;
         if (atm_may_send(send_vcc, skb->len)) {
                 atomic_add(skb->truesize, &send_vcc->sk->wmem_alloc);
diff -Nru a/net/atm/mpc.c b/net/atm/mpc.c
--- a/net/atm/mpc.c Thu Jun 26 07:09:58 2003
+++ b/net/atm/mpc.c Thu Jun 26 07:09:58 2003
@@ -521,7 +521,6 @@
         }
 
         atomic_add(skb->truesize, &entry->shortcut->sk->wmem_alloc);
- ATM_SKB(skb)->iovcnt = 0; /* just to be safe ... */
         ATM_SKB(skb)->atm_options = entry->shortcut->atm_options;
         entry->shortcut->send(entry->shortcut, skb);
         entry->packets_fwded++;
diff -Nru a/net/atm/pppoatm.c b/net/atm/pppoatm.c
--- a/net/atm/pppoatm.c Thu Jun 26 07:09:58 2003
+++ b/net/atm/pppoatm.c Thu Jun 26 07:09:58 2003
@@ -232,7 +232,6 @@
                 return 1;
         }
         atomic_add(skb->truesize, &ATM_SKB(skb)->vcc->sk->wmem_alloc);
- ATM_SKB(skb)->iovcnt = 0;
         ATM_SKB(skb)->atm_options = ATM_SKB(skb)->vcc->atm_options;
         DPRINTK("(unit %d): atm_skb(%p)->vcc(%p)->dev(%p)\n",
             pvcc->chan.unit, skb, ATM_SKB(skb)->vcc,
diff -Nru a/net/sched/sch_atm.c b/net/sched/sch_atm.c
--- a/net/sched/sch_atm.c Thu Jun 26 07:09:58 2003
+++ b/net/sched/sch_atm.c Thu Jun 26 07:09:58 2003
@@ -512,7 +512,6 @@
                         memcpy(skb_push(skb,flow->hdr_len),flow->hdr,
                             flow->hdr_len);
                         atomic_add(skb->truesize,&flow->vcc->sk->wmem_alloc);
- ATM_SKB(skb)->iovcnt = 0;
                         /* atm.atm_options are already set by atm_tc_enqueue */
                         (void) flow->vcc->send(flow->vcc,skb);
                 }

[atm]: lock neighbor entry during update in clip.c

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.1008 -> 1.1009
# net/atm/clip.c 1.5 -> 1.6
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/06/25 chas@relax.cmf.nrl.navy.mil 1.1009
# lock neighbor entry during update in clip.c
# --------------------------------------------
#
diff -Nru a/net/atm/clip.c b/net/atm/clip.c
--- a/net/atm/clip.c Thu Jun 26 07:10:22 2003
+++ b/net/atm/clip.c Thu Jun 26 07:10:22 2003
@@ -127,6 +127,8 @@
                         struct atmarp_entry *entry = NEIGH2ENTRY(n);
                         struct clip_vcc *clip_vcc;
 
+ write_lock(&n->lock);
+
                         for (clip_vcc = entry->vccs; clip_vcc;
                             clip_vcc = clip_vcc->next)
                                 if (clip_vcc->idle_timeout &&
@@ -141,6 +143,7 @@
                         if (entry->vccs ||
                             time_before(jiffies, entry->expires)) {
                                 np = &n->next;
+ write_unlock(&n->lock);
                                 continue;
                         }
                         if (atomic_read(&n->refcnt) > 1) {
@@ -152,11 +155,13 @@
                                      NULL)
                                         dev_kfree_skb(skb);
                                 np = &n->next;
+ write_unlock(&n->lock);
                                 continue;
                         }
                         *np = n->next;
                         DPRINTK("expired neigh %p\n",n);
                         n->dead = 1;
+ write_unlock(&n->lock);
                         neigh_release(n);
                 }
         }

[atm]: make sub skb->cb is clear before upcall to network

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.1009 -> 1.1010
# net/atm/lec.c 1.12 -> 1.13
# net/atm/mpc.c 1.5 -> 1.6
# net/atm/clip.c 1.6 -> 1.7
# net/atm/br2684.c 1.3 -> 1.4
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/06/26 chas@relax.cmf.nrl.navy.mil 1.1010
# mpc.c, lec.c, clip.c, br2684.c:
# make sure skb->cb is clear before upcall to network
# --------------------------------------------
#
diff -Nru a/net/atm/br2684.c b/net/atm/br2684.c
--- a/net/atm/br2684.c Thu Jun 26 20:08:14 2003
+++ b/net/atm/br2684.c Thu Jun 26 20:08:14 2003
@@ -481,6 +481,7 @@
         }
         brdev->stats.rx_packets++;
         brdev->stats.rx_bytes += skb->len;
+ memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
         netif_rx(skb);
 }
 
diff -Nru a/net/atm/clip.c b/net/atm/clip.c
--- a/net/atm/clip.c Thu Jun 26 20:08:14 2003
+++ b/net/atm/clip.c Thu Jun 26 20:08:14 2003
@@ -223,6 +223,7 @@
         clip_vcc->last_use = jiffies;
         PRIV(skb->dev)->stats.rx_packets++;
         PRIV(skb->dev)->stats.rx_bytes += skb->len;
+ memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
         netif_rx(skb);
 }
 
diff -Nru a/net/atm/lec.c b/net/atm/lec.c
--- a/net/atm/lec.c Thu Jun 26 20:08:14 2003
+++ b/net/atm/lec.c Thu Jun 26 20:08:14 2003
@@ -724,6 +724,7 @@
                 skb->protocol = eth_type_trans(skb, dev);
                 priv->stats.rx_packets++;
                 priv->stats.rx_bytes += skb->len;
+ memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
                 netif_rx(skb);
         }
 }
diff -Nru a/net/atm/mpc.c b/net/atm/mpc.c
--- a/net/atm/mpc.c Thu Jun 26 20:08:14 2003
+++ b/net/atm/mpc.c Thu Jun 26 20:08:14 2003
@@ -729,6 +729,7 @@
         eg->packets_rcvd++;
         mpc->eg_ops->put(eg);
 
+ memset(ATM_SKB(new_skb), 0, sizeof(struct atm_skb_data));
         netif_rx(new_skb);
 
         return;

[atm]: eliminate ATM_PDU_OVHD, ops->free_rx_skb and ops->alloc_tx

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.1010 -> 1.1011
# net/atm/lec.c 1.13 -> 1.14
# drivers/atm/lanai.c 1.2 -> 1.3
# net/atm/mpc.c 1.6 -> 1.7
# include/linux/atmdev.h 1.7 -> 1.8
# net/atm/raw.c 1.2 -> 1.3
# drivers/atm/idt77252.c 1.6 -> 1.7
# net/atm/signaling.c 1.3 -> 1.4
# net/atm/common.c 1.12 -> 1.13
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/06/26 chas@relax.cmf.nrl.navy.mil 1.1011
# atmdev.h, lanai.c, idt77252.c, signaling.c, raw.c, mpc.c, lec.c, common.c:
# eliminate ATM_PDU_OVHD, ops->free_rx_skb and ops->alloc_tx
# --------------------------------------------
#
diff -Nru a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
--- a/drivers/atm/idt77252.c Thu Jun 26 20:08:40 2003
+++ b/drivers/atm/idt77252.c Thu Jun 26 20:08:40 2003
@@ -2025,7 +2025,7 @@
                 atomic_inc(&vcc->stats->tx_err);
                 return -ENOMEM;
         }
- atomic_add(skb->truesize + ATM_PDU_OVHD, &vcc->sk->wmem_alloc);
+ atomic_add(skb->truesize, &vcc->sk->wmem_alloc);
 
         memcpy(skb_put(skb, 52), cell, 52);
 
diff -Nru a/drivers/atm/lanai.c b/drivers/atm/lanai.c
--- a/drivers/atm/lanai.c Thu Jun 26 20:08:40 2003
+++ b/drivers/atm/lanai.c Thu Jun 26 20:08:40 2003
@@ -2842,7 +2842,6 @@
         phy_get: NULL,
         feedback: NULL,
         change_qos: lanai_change_qos,
- free_rx_skb: NULL,
         proc_read: lanai_proc_read
 };
 
diff -Nru a/include/linux/atmdev.h b/include/linux/atmdev.h
--- a/include/linux/atmdev.h Thu Jun 26 20:08:40 2003
+++ b/include/linux/atmdev.h Thu Jun 26 20:08:40 2003
@@ -30,9 +30,6 @@
 #define ATM_DS3_PCR (8000*12)
                         /* DS3: 12 cells in a 125 usec time slot */
 
-#define ATM_PDU_OVHD 0 /* number of bytes to charge against buffer
- quota per PDU */
-
 #define ATM_SD(s) ((s)->sk->protinfo.af_atm)
 
 
@@ -292,10 +289,6 @@
         struct atm_sap sap; /* SAP */
         void (*push)(struct atm_vcc *vcc,struct sk_buff *skb);
         void (*pop)(struct atm_vcc *vcc,struct sk_buff *skb); /* optional */
- struct sk_buff *(*alloc_tx)(struct atm_vcc *vcc,unsigned int size);
- /* TX allocation routine - can be */
- /* modified by protocol or by driver.*/
- /* NOTE: this interface will change */
         int (*push_oam)(struct atm_vcc *vcc,void *cell);
         int (*send)(struct atm_vcc *vcc,struct sk_buff *skb);
         void *dev_data; /* per-device data */
@@ -388,8 +381,6 @@
         void (*feedback)(struct atm_vcc *vcc,struct sk_buff *skb,
             unsigned long start,unsigned long dest,int len);
         int (*change_qos)(struct atm_vcc *vcc,struct atm_qos *qos,int flags);
- void (*free_rx_skb)(struct atm_vcc *vcc, struct sk_buff *skb);
- /* @@@ temporary hack */
         int (*proc_read)(struct atm_dev *dev,loff_t *pos,char *page);
         struct module *owner;
 };
@@ -430,19 +421,19 @@
 
 static __inline__ void atm_force_charge(struct atm_vcc *vcc,int truesize)
 {
- atomic_add(truesize+ATM_PDU_OVHD,&vcc->sk->rmem_alloc);
+ atomic_add(truesize, &vcc->sk->rmem_alloc);
 }
 
 
 static __inline__ void atm_return(struct atm_vcc *vcc,int truesize)
 {
- atomic_sub(truesize+ATM_PDU_OVHD,&vcc->sk->rmem_alloc);
+ atomic_sub(truesize, &vcc->sk->rmem_alloc);
 }
 
 
 static __inline__ int atm_may_send(struct atm_vcc *vcc,unsigned int size)
 {
- return size+atomic_read(&vcc->sk->wmem_alloc)+ATM_PDU_OVHD < vcc->sk->sndbuf;
+ return (size + atomic_read(&vcc->sk->wmem_alloc)) < vcc->sk->sndbuf;
 }
 
 
diff -Nru a/net/atm/common.c b/net/atm/common.c
--- a/net/atm/common.c Thu Jun 26 20:08:40 2003
+++ b/net/atm/common.c Thu Jun 26 20:08:40 2003
@@ -99,7 +99,7 @@
         }
         while (!(skb = alloc_skb(size,GFP_KERNEL))) schedule();
         DPRINTK("AlTx %d += %d\n",atomic_read(&vcc->sk->wmem_alloc),skb->truesize);
- atomic_add(skb->truesize+ATM_PDU_OVHD,&vcc->sk->wmem_alloc);
+ atomic_add(skb->truesize, &vcc->sk->wmem_alloc);
         return skb;
 }
 
@@ -115,7 +115,6 @@
         vcc = sk->protinfo.af_atm;
         memset(&vcc->flags,0,sizeof(vcc->flags));
         vcc->dev = NULL;
- vcc->alloc_tx = alloc_tx;
         vcc->callback = NULL;
         memset(&vcc->local,0,sizeof(struct sockaddr_atmsvc));
         memset(&vcc->remote,0,sizeof(struct sockaddr_atmsvc));
@@ -147,9 +146,7 @@
                 if (vcc->push) vcc->push(vcc,NULL); /* atmarpd has no push */
                 while ((skb = skb_dequeue(&vcc->sk->receive_queue))) {
                         atm_return(vcc,skb->truesize);
- if (vcc->dev->ops->free_rx_skb)
- vcc->dev->ops->free_rx_skb(vcc,skb);
- else kfree_skb(skb);
+ kfree_skb(skb);
                 }
                 spin_lock (&atm_dev_lock);
                 fops_put (vcc->dev->ops);
@@ -398,8 +395,7 @@
         DPRINTK("RcvM %d -= %d\n",atomic_read(&vcc->sk->rmem_alloc),skb->truesize);
         atm_return(vcc,skb->truesize);
         error = copy_to_user(buff,skb->data,eff_len) ? -EFAULT : 0;
- if (!vcc->dev->ops->free_rx_skb) kfree_skb(skb);
- else vcc->dev->ops->free_rx_skb(vcc, skb);
+ kfree_skb(skb);
         return error ? error : eff_len;
 }
 
@@ -431,7 +427,7 @@
         add_wait_queue(&vcc->sleep,&wait);
         set_current_state(TASK_INTERRUPTIBLE);
         error = 0;
- while (!(skb = vcc->alloc_tx(vcc,eff))) {
+ while (!(skb = alloc_tx(vcc,eff))) {
                 if (m->msg_flags & MSG_DONTWAIT) {
                         error = -EAGAIN;
                         break;
@@ -482,8 +478,7 @@
                 mask |= POLLHUP;
         if (sock->state != SS_CONNECTING) {
                 if (vcc->qos.txtp.traffic_class != ATM_NONE &&
- vcc->qos.txtp.max_sdu+atomic_read(&vcc->sk->wmem_alloc)+
- ATM_PDU_OVHD <= vcc->sk->sndbuf)
+ vcc->qos.txtp.max_sdu+atomic_read(&vcc->sk->wmem_alloc) <= vcc->sk->sndbuf)
                         mask |= POLLOUT | POLLWRNORM;
         }
         else if (vcc->reply != WAITING) {
@@ -550,7 +545,7 @@
                                 goto done;
                         }
                         ret_val = put_user(vcc->sk->sndbuf-
- atomic_read(&vcc->sk->wmem_alloc)-ATM_PDU_OVHD,
+ atomic_read(&vcc->sk->wmem_alloc),
                             (int *) arg) ? -EFAULT : 0;
                         goto done;
                 case SIOCINQ:
diff -Nru a/net/atm/lec.c b/net/atm/lec.c
--- a/net/atm/lec.c Thu Jun 26 20:08:40 2003
+++ b/net/atm/lec.c Thu Jun 26 20:08:40 2003
@@ -402,7 +402,7 @@
         int i;
         char *tmp; /* FIXME */
 
- atomic_sub(skb->truesize+ATM_PDU_OVHD, &vcc->sk->wmem_alloc);
+ atomic_sub(skb->truesize, &vcc->sk->wmem_alloc);
         mesg = (struct atmlec_msg *)skb->data;
         tmp = skb->data;
         tmp += sizeof(struct atmlec_msg);
diff -Nru a/net/atm/mpc.c b/net/atm/mpc.c
--- a/net/atm/mpc.c Thu Jun 26 20:08:40 2003
+++ b/net/atm/mpc.c Thu Jun 26 20:08:40 2003
@@ -869,7 +869,7 @@
         
         struct mpoa_client *mpc = find_mpc_by_vcc(vcc);
         struct k_message *mesg = (struct k_message*)skb->data;
- atomic_sub(skb->truesize+ATM_PDU_OVHD, &vcc->sk->wmem_alloc);
+ atomic_sub(skb->truesize, &vcc->sk->wmem_alloc);
         
         if (mpc == NULL) {
                 printk("mpoa: msg_from_mpoad: no mpc found\n");
diff -Nru a/net/atm/raw.c b/net/atm/raw.c
--- a/net/atm/raw.c Thu Jun 26 20:08:40 2003
+++ b/net/atm/raw.c Thu Jun 26 20:08:40 2003
@@ -37,7 +37,7 @@
 static void atm_pop_raw(struct atm_vcc *vcc,struct sk_buff *skb)
 {
         DPRINTK("APopR (%d) %d -= %d\n",vcc->vci,vcc->sk->wmem_alloc,skb->truesize);
- atomic_sub(skb->truesize+ATM_PDU_OVHD,&vcc->sk->wmem_alloc);
+ atomic_sub(skb->truesize, &vcc->sk->wmem_alloc);
         dev_kfree_skb_any(skb);
         wake_up(&vcc->sleep);
 }
diff -Nru a/net/atm/signaling.c b/net/atm/signaling.c
--- a/net/atm/signaling.c Thu Jun 26 20:08:40 2003
+++ b/net/atm/signaling.c Thu Jun 26 20:08:40 2003
@@ -98,7 +98,7 @@
         struct atm_vcc *session_vcc;
 
         msg = (struct atmsvc_msg *) skb->data;
- atomic_sub(skb->truesize+ATM_PDU_OVHD,&vcc->sk->wmem_alloc);
+ atomic_sub(skb->truesize, &vcc->sk->wmem_alloc);
         DPRINTK("sigd_send %d (0x%lx)\n",(int) msg->type,
           (unsigned long) msg->vcc);
         vcc = *(struct atm_vcc **) &msg->vcc;

[atm]: make clip buildable as a module

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.1011 -> 1.1012
# net/atm/Makefile 1.4 -> 1.5
# net/Config.in 1.10 -> 1.11
# net/atm/proc.c 1.5 -> 1.6
# net/atm/pvc.c 1.2 -> 1.3
# net/atm/ipcommon.c 1.1 -> 1.2
# net/netsyms.c 1.35 -> 1.36
# net/atm/clip.c 1.7 -> 1.8
# include/net/atmclip.h 1.1 -> 1.2
# net/ipv4/arp.c 1.10 -> 1.11
# net/atm/common.c 1.13 -> 1.14
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/06/26 chas@relax.cmf.nrl.navy.mil 1.1012
# make clip buildable as a module
# --------------------------------------------
#
diff -Nru a/include/net/atmclip.h b/include/net/atmclip.h
--- a/include/net/atmclip.h Thu Jun 26 20:09:05 2003
+++ b/include/net/atmclip.h Thu Jun 26 20:09:05 2003
@@ -55,13 +55,22 @@
 };
 
 
-extern struct atm_vcc *atmarpd; /* ugly */
-extern struct neigh_table clip_tbl;
+#ifdef __KERNEL__
+struct atm_clip_ops {
+ int (*clip_create)(int number);
+ int (*clip_mkip)(struct atm_vcc *vcc,int timeout);
+ int (*clip_setentry)(struct atm_vcc *vcc,u32 ip);
+ int (*clip_encap)(struct atm_vcc *vcc,int mode);
+ void (*clip_push)(struct atm_vcc *vcc,struct sk_buff *skb);
+ int (*atm_init_atmarp)(struct atm_vcc *vcc);
+ struct module *owner;
+};
 
-int clip_create(int number);
-int clip_mkip(struct atm_vcc *vcc,int timeout);
-int clip_setentry(struct atm_vcc *vcc,u32 ip);
-int clip_encap(struct atm_vcc *vcc,int mode);
-void atm_clip_init(void);
+void atm_clip_ops_set(struct atm_clip_ops *);
+int try_atm_clip_ops(void);
+
+extern struct neigh_table *clip_tbl_hook;
+extern struct atm_clip_ops *atm_clip_ops;
+#endif
 
 #endif
diff -Nru a/net/Config.in b/net/Config.in
--- a/net/Config.in Thu Jun 26 20:09:05 2003
+++ b/net/Config.in Thu Jun 26 20:09:05 2003
@@ -34,8 +34,8 @@
    bool 'Asynchronous Transfer Mode (ATM) (EXPERIMENTAL)' CONFIG_ATM
    if [ "$CONFIG_ATM" = "y" ]; then
       if [ "$CONFIG_INET" = "y" ]; then
- bool ' Classical IP over ATM' CONFIG_ATM_CLIP
- if [ "$CONFIG_ATM_CLIP" = "y" ]; then
+ tristate ' Classical IP over ATM' CONFIG_ATM_CLIP
+ if [ "$CONFIG_ATM_CLIP" != "n" ]; then
             bool ' Do NOT send ICMP if no neighbour' CONFIG_ATM_CLIP_NO_ICMP
          fi
       fi
diff -Nru a/net/atm/Makefile b/net/atm/Makefile
--- a/net/atm/Makefile Thu Jun 26 20:09:05 2003
+++ b/net/atm/Makefile Thu Jun 26 20:09:05 2003
@@ -16,10 +16,10 @@
 
 obj-$(CONFIG_ATM) := addr.o pvc.o signaling.o svc.o common.o atm_misc.o raw.o resources.o
 
-ifeq ($(CONFIG_ATM_CLIP),y)
-obj-y += clip.o
-NEED_IPCOM = ipcommon.o
+ifneq ($(CONFIG_ATM_CLIP),n)
+ NEED_IPCOM = ipcommon.o
 endif
+obj-$(CONFIG_ATM_CLIP) += clip.o
 
 ifeq ($(CONFIG_ATM_BR2684),y)
   NEED_IPCOM = ipcommon.o
diff -Nru a/net/atm/clip.c b/net/atm/clip.c
--- a/net/atm/clip.c Thu Jun 26 20:09:05 2003
+++ b/net/atm/clip.c Thu Jun 26 20:09:05 2003
@@ -7,6 +7,8 @@
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/kernel.h> /* for UINT_MAX */
+#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
 #include <linux/wait.h>
@@ -45,6 +47,7 @@
 
 struct net_device *clip_devs = NULL;
 struct atm_vcc *atmarpd = NULL;
+static struct neigh_table clip_tbl;
 static struct timer_list idle_timer;
 static int start_timer = 1;
 
@@ -187,7 +190,7 @@
 }
 
 
-void clip_push(struct atm_vcc *vcc,struct sk_buff *skb)
+static void clip_push(struct atm_vcc *vcc,struct sk_buff *skb)
 {
         struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
 
@@ -325,7 +328,7 @@
 }
 
 
-struct neigh_table clip_tbl = {
+static struct neigh_table clip_tbl = {
         NULL, /* next */
         AF_INET, /* family */
         sizeof(struct neighbour)+sizeof(struct atmarp_entry), /* entry_size */
@@ -371,7 +374,7 @@
  */
 
 
-int clip_encap(struct atm_vcc *vcc,int mode)
+static int clip_encap(struct atm_vcc *vcc,int mode)
 {
         CLIP_VCC(vcc)->encap = mode;
         return 0;
@@ -468,7 +471,7 @@
 }
 
 
-int clip_mkip(struct atm_vcc *vcc,int timeout)
+static int clip_mkip(struct atm_vcc *vcc,int timeout)
 {
         struct clip_vcc *clip_vcc;
         struct sk_buff_head copy;
@@ -508,7 +511,7 @@
 }
 
 
-int clip_setentry(struct atm_vcc *vcc,u32 ip)
+static int clip_setentry(struct atm_vcc *vcc,u32 ip)
 {
         struct neighbour *neigh;
         struct atmarp_entry *entry;
@@ -580,7 +583,7 @@
 }
 
 
-int clip_create(int number)
+static int clip_create(int number)
 {
         struct net_device *dev;
         struct clip_priv *clip_priv;
@@ -700,28 +703,23 @@
                     "pending\n");
         skb_queue_purge(&vcc->sk->receive_queue);
         DPRINTK("(done)\n");
+ MOD_DEC_USE_COUNT;
 }
 
 
 static struct atmdev_ops atmarpd_dev_ops = {
- close: atmarpd_close,
+ .close = atmarpd_close,
 };
 
 
 static struct atm_dev atmarpd_dev = {
- &atmarpd_dev_ops,
- NULL, /* no PHY */
- "arpd", /* type */
- 999, /* dummy device number */
- NULL,NULL, /* pretend not to have any VCCs */
- NULL,NULL, /* no data */
- { 0 }, /* no flags */
- NULL, /* no local address */
- { 0 } /* no ESI, no statistics */
+ .ops = &atmarpd_dev_ops,
+ .type = "arpd",
+ .number = 999,
 };
 
 
-int atm_init_atmarp(struct atm_vcc *vcc)
+static int atm_init_atmarp(struct atm_vcc *vcc)
 {
         struct net_device *dev;
 
@@ -748,13 +746,61 @@
         for (dev = clip_devs; dev; dev = PRIV(dev)->next)
                 if (dev->flags & IFF_UP)
                         (void) to_atmarpd(act_up,PRIV(dev)->number,0);
+ MOD_INC_USE_COUNT;
         return 0;
 }
 
+static struct atm_clip_ops __atm_clip_ops = {
+ .clip_create = clip_create,
+ .clip_mkip = clip_mkip,
+ .clip_setentry = clip_setentry,
+ .clip_encap = clip_encap,
+ .clip_push = clip_push,
+ .atm_init_atmarp = atm_init_atmarp,
+ .owner = THIS_MODULE
+};
 
-void atm_clip_init(void)
+static int __init atm_clip_init(void)
 {
+ /* we should use neigh_table_init() */
         clip_tbl.lock = RW_LOCK_UNLOCKED;
         clip_tbl.kmem_cachep = kmem_cache_create(clip_tbl.id,
             clip_tbl.entry_size, 0, SLAB_HWCACHE_ALIGN, NULL, NULL);
+
+ /* so neigh_ifdown() doesn't complain */
+ clip_tbl.proxy_timer.data = 0;
+ clip_tbl.proxy_timer.function = 0;
+ init_timer(&clip_tbl.proxy_timer);
+ skb_queue_head_init(&clip_tbl.proxy_queue);
+
+ clip_tbl_hook = &clip_tbl;
+ atm_clip_ops_set(&__atm_clip_ops);
+
+ return 0;
+}
+
+static void __exit atm_clip_exit(void)
+{
+ struct net_device *dev, *next;
+
+ atm_clip_ops_set(NULL);
+
+ neigh_ifdown(&clip_tbl, NULL);
+ dev = clip_devs;
+ while (dev) {
+ next = PRIV(dev)->next;
+ unregister_netdev(dev);
+ kfree(dev);
+ dev = next;
+ }
+ if (start_timer == 0) del_timer(&idle_timer);
+
+ kmem_cache_destroy(clip_tbl.kmem_cachep);
+
+ clip_tbl_hook = NULL;
 }
+
+module_init(atm_clip_init);
+module_exit(atm_clip_exit);
+
+MODULE_LICENSE("GPL");
diff -Nru a/net/atm/common.c b/net/atm/common.c
--- a/net/atm/common.c Thu Jun 26 20:09:05 2003
+++ b/net/atm/common.c Thu Jun 26 20:09:05 2003
@@ -58,6 +58,36 @@
 #endif
 #endif
 
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
+#include <net/atmclip.h>
+struct atm_clip_ops *atm_clip_ops;
+static DECLARE_MUTEX(atm_clip_ops_mutex);
+
+void atm_clip_ops_set(struct atm_clip_ops *hook)
+{
+ down(&atm_clip_ops_mutex);
+ atm_clip_ops = hook;
+ up(&atm_clip_ops_mutex);
+}
+
+int try_atm_clip_ops(void)
+{
+ down(&atm_clip_ops_mutex);
+ if (atm_clip_ops && try_inc_mod_count(atm_clip_ops->owner)) {
+ up(&atm_clip_ops_mutex);
+ return 1;
+ }
+ up(&atm_clip_ops_mutex);
+ return 0;
+}
+
+#ifdef CONFIG_ATM_CLIP_MODULE
+EXPORT_SYMBOL(atm_clip_ops);
+EXPORT_SYMBOL(atm_clip_ops_mutex);
+EXPORT_SYMBOL(atm_clip_ops_set);
+#endif
+#endif
+
 #if defined(CONFIG_PPPOATM) || defined(CONFIG_PPPOATM_MODULE)
 int (*pppoatm_ioctl_hook)(struct atm_vcc *, unsigned int, unsigned long);
 EXPORT_SYMBOL(pppoatm_ioctl_hook);
@@ -626,39 +656,68 @@
                         if (!error) sock->state = SS_CONNECTED;
                         ret_val = error;
                         goto done;
-#ifdef CONFIG_ATM_CLIP
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
                 case SIOCMKCLIP:
- if (!capable(CAP_NET_ADMIN))
+ if (!capable(CAP_NET_ADMIN)) {
                                 ret_val = -EPERM;
- else
- ret_val = clip_create(arg);
+ goto done;
+ }
+ if (try_atm_clip_ops()) {
+ ret_val = atm_clip_ops->clip_create(arg);
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
+ } else
+ ret_val = -ENOSYS;
                         goto done;
                 case ATMARPD_CTRL:
                         if (!capable(CAP_NET_ADMIN)) {
                                 ret_val = -EPERM;
                                 goto done;
                         }
- error = atm_init_atmarp(vcc);
- if (!error) sock->state = SS_CONNECTED;
- ret_val = error;
+#if defined(CONFIG_ATM_CLIP_MODULE)
+ if (!atm_clip_ops)
+ request_module("clip");
+#endif
+ if (try_atm_clip_ops()) {
+ error = atm_clip_ops->atm_init_atmarp(vcc);
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
+ if (!error)
+ sock->state = SS_CONNECTED;
+ ret_val = error;
+ } else
+ ret_val = -ENOSYS;
                         goto done;
                 case ATMARP_MKIP:
- if (!capable(CAP_NET_ADMIN))
+ if (!capable(CAP_NET_ADMIN)) {
                                 ret_val = -EPERM;
- else
- ret_val = clip_mkip(vcc,arg);
+ goto done;
+ }
+ if (try_atm_clip_ops()) {
+ ret_val = atm_clip_ops->clip_mkip(vcc, arg);
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
+ } else
+ ret_val = -ENOSYS;
                         goto done;
                 case ATMARP_SETENTRY:
- if (!capable(CAP_NET_ADMIN))
+ if (!capable(CAP_NET_ADMIN)) {
                                 ret_val = -EPERM;
- else
- ret_val = clip_setentry(vcc,arg);
+ goto done;
+ }
+ if (try_atm_clip_ops()) {
+ ret_val = atm_clip_ops->clip_setentry(vcc, arg);
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
+ } else
+ ret_val = -ENOSYS;
                         goto done;
                 case ATMARP_ENCAP:
- if (!capable(CAP_NET_ADMIN))
+ if (!capable(CAP_NET_ADMIN)) {
                                 ret_val = -EPERM;
- else
- ret_val = clip_encap(vcc,arg);
+ goto done;
+ }
+ if (try_atm_clip_ops()) {
+ ret_val = atm_clip_ops->clip_encap(vcc, arg);
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
+ } else
+ ret_val = -ENOSYS;
                         goto done;
 #endif
 #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
diff -Nru a/net/atm/ipcommon.c b/net/atm/ipcommon.c
--- a/net/atm/ipcommon.c Thu Jun 26 20:09:05 2003
+++ b/net/atm/ipcommon.c Thu Jun 26 20:09:05 2003
@@ -67,4 +67,5 @@
 }
 
 
+EXPORT_SYMBOL(llc_oui);
 EXPORT_SYMBOL(skb_migrate);
diff -Nru a/net/atm/proc.c b/net/atm/proc.c
--- a/net/atm/proc.c Thu Jun 26 20:09:05 2003
+++ b/net/atm/proc.c Thu Jun 26 20:09:05 2003
@@ -39,10 +39,9 @@
 #include "common.h" /* atm_proc_init prototype */
 #include "signaling.h" /* to get sigd - ugly too */
 
-#ifdef CONFIG_ATM_CLIP
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
 #include <net/atmclip.h>
 #include "ipcommon.h"
-extern void clip_push(struct atm_vcc *vcc,struct sk_buff *skb);
 #endif
 
 #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
@@ -89,7 +88,7 @@
 }
 
 
-#ifdef CONFIG_ATM_CLIP
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
 
 
 static int svc_addr(char *buf,struct sockaddr_atmsvc *addr)
@@ -178,16 +177,21 @@
             aal_name[vcc->qos.aal],vcc->qos.rxtp.min_pcr,
             class_name[vcc->qos.rxtp.traffic_class],vcc->qos.txtp.min_pcr,
             class_name[vcc->qos.txtp.traffic_class]);
-#ifdef CONFIG_ATM_CLIP
- if (vcc->push == clip_push) {
- struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
- struct net_device *dev;
-
- dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : NULL;
- off += sprintf(buf+off,"CLIP, Itf:%s, Encap:",
- dev ? dev->name : "none?");
- if (clip_vcc->encap) off += sprintf(buf+off,"LLC/SNAP");
- else off += sprintf(buf+off,"None");
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
+ if (try_atm_clip_ops()) {
+ if (vcc->push == atm_clip_ops->clip_push) {
+ struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
+ struct net_device *dev;
+
+ dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : NULL;
+ off += sprintf(buf+off,"CLIP, Itf:%s, Encap:",
+ dev ? dev->name : "none?");
+ if (clip_vcc->encap)
+ off += sprintf(buf+off,"LLC/SNAP");
+ else
+ off += sprintf(buf+off,"None");
+ }
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
         }
 #endif
         strcpy(buf+off,"\n");
@@ -407,7 +411,7 @@
         return 0;
 }
 
-#ifdef CONFIG_ATM_CLIP
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
 static int atm_arp_info(loff_t pos,char *buf)
 {
         struct neighbour *n;
@@ -417,28 +421,33 @@
                 return sprintf(buf,"IPitf TypeEncp Idle IP address "
                     "ATM address\n");
         }
+ if (!try_atm_clip_ops())
+ return 0;
         count = pos;
- read_lock_bh(&clip_tbl.lock);
+ read_lock_bh(&clip_tbl_hook->lock);
         for (i = 0; i <= NEIGH_HASHMASK; i++)
- for (n = clip_tbl.hash_buckets[i]; n; n = n->next) {
+ for (n = clip_tbl_hook->hash_buckets[i]; n; n = n->next) {
                         struct atmarp_entry *entry = NEIGH2ENTRY(n);
                         struct clip_vcc *vcc;
 
                         if (!entry->vccs) {
                                 if (--count) continue;
                                 atmarp_info(n->dev,entry,NULL,buf);
- read_unlock_bh(&clip_tbl.lock);
+ read_unlock_bh(&clip_tbl_hook->lock);
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
                                 return strlen(buf);
                         }
                         for (vcc = entry->vccs; vcc;
                             vcc = vcc->next) {
                                 if (--count) continue;
                                 atmarp_info(n->dev,entry,vcc,buf);
- read_unlock_bh(&clip_tbl.lock);
+ read_unlock_bh(&clip_tbl_hook->lock);
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
                                 return strlen(buf);
                         }
                 }
- read_unlock_bh(&clip_tbl.lock);
+ read_unlock_bh(&clip_tbl_hook->lock);
+ __MOD_DEC_USE_COUNT(atm_clip_ops->owner);
         return 0;
 }
 #endif
@@ -612,7 +621,7 @@
         CREATE_ENTRY(pvc);
         CREATE_ENTRY(svc);
         CREATE_ENTRY(vc);
-#ifdef CONFIG_ATM_CLIP
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
         CREATE_ENTRY(arp);
 #endif
 #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
diff -Nru a/net/atm/pvc.c b/net/atm/pvc.c
--- a/net/atm/pvc.c Thu Jun 26 20:09:05 2003
+++ b/net/atm/pvc.c Thu Jun 26 20:09:05 2003
@@ -8,16 +8,12 @@
                                    struct proto_ops */
 #include <linux/atm.h> /* ATM stuff */
 #include <linux/atmdev.h> /* ATM devices */
-#include <linux/atmclip.h> /* Classical IP over ATM */
 #include <linux/errno.h> /* error codes */
 #include <linux/kernel.h> /* printk */
 #include <linux/init.h>
 #include <linux/skbuff.h>
 #include <linux/bitops.h>
 #include <net/sock.h> /* for sock_no_* */
-#ifdef CONFIG_ATM_CLIP
-#include <net/atmclip.h>
-#endif
 
 #include "resources.h" /* devs and vccs */
 #include "common.h" /* common for PVCs and SVCs */
@@ -133,9 +129,6 @@
                 printk(KERN_ERR "ATMPVC: can't register (%d)",error);
                 return error;
         }
-#ifdef CONFIG_ATM_CLIP
- atm_clip_init();
-#endif
 #ifdef CONFIG_PROC_FS
         error = atm_proc_init();
         if (error) printk("atm_proc_init fails with %d\n",error);
diff -Nru a/net/ipv4/arp.c b/net/ipv4/arp.c
--- a/net/ipv4/arp.c Thu Jun 26 20:09:05 2003
+++ b/net/ipv4/arp.c Thu Jun 26 20:09:05 2003
@@ -105,8 +105,9 @@
 #include <net/netrom.h>
 #endif
 #endif
-#ifdef CONFIG_ATM_CLIP
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
 #include <net/atmclip.h>
+struct neigh_table *clip_tbl_hook;
 #endif
 
 #include <asm/system.h>
@@ -438,8 +439,8 @@
                 if (dev->flags&(IFF_LOOPBACK|IFF_POINTOPOINT))
                         nexthop = 0;
                 n = __neigh_lookup_errno(
-#ifdef CONFIG_ATM_CLIP
- dev->type == ARPHRD_ATM ? &clip_tbl :
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
+ dev->type == ARPHRD_ATM ? clip_tbl_hook :
 #endif
                     &arp_tbl, &nexthop, dev);
                 if (IS_ERR(n))
diff -Nru a/net/netsyms.c b/net/netsyms.c
--- a/net/netsyms.c Thu Jun 26 20:09:05 2003
+++ b/net/netsyms.c Thu Jun 26 20:09:05 2003
@@ -45,6 +45,9 @@
 #include <linux/ip.h>
 #include <net/protocol.h>
 #include <net/arp.h>
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
+#include <net/atmclip.h>
+#endif
 #include <net/ip.h>
 #include <net/udp.h>
 #include <net/tcp.h>
@@ -461,6 +464,9 @@
 EXPORT_SYMBOL(ip_rcv);
 EXPORT_SYMBOL(arp_rcv);
 EXPORT_SYMBOL(arp_tbl);
+#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE)
+EXPORT_SYMBOL(clip_tbl_hook);
+#endif
 EXPORT_SYMBOL(arp_find);
 
 #endif /* CONFIG_INET */
-
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This archive was generated by hypermail 2b29 : Mon Jun 30 2003 - 22:00:25 EST