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提交 e49e76db 编写于 作者: S Stephen Hemminger 提交者： David S. Miller
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[ATM] clip: run through Lindent 

Run CLIP driver through Lindent script to fix formatting.
Signed-off-by: NStephen Hemminger <shemminger@osdl.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 2d907392
隐藏空白更改
内联 并排
Showing with 199 addition and 211 deletion
net/atm/clip.c
浏览文件 @ e49e76db
...@@ -2,7 +2,6 @@ ...@@ -2,7 +2,6 @@
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
#include <linux/config.h> #include <linux/config.h>
#include <linux/string.h> #include <linux/string.h>
#include <linux/errno.h> #include <linux/errno.h>
...@@ -55,21 +54,23 @@ static struct atm_vcc *atmarpd; ...@@ -55,21 +54,23 @@ static struct atm_vcc *atmarpd;
static struct neigh_table clip_tbl; static struct neigh_table clip_tbl;
static struct timer_list idle_timer; static struct timer_list idle_timer;
static int to_atmarpd(enum atmarp_ctrl_type type,int itf,unsigned long ip) static int to_atmarpd(enum atmarp_ctrl_type type, int itf, unsigned long ip)
{ {
struct sock *sk; struct sock *sk;
struct atmarp_ctrl *ctrl; struct atmarp_ctrl *ctrl;
struct sk_buff *skb; struct sk_buff *skb;
DPRINTK("to_atmarpd(%d)\n",type); DPRINTK("to_atmarpd(%d)\n", type);
if (!atmarpd) return -EUNATCH; if (!atmarpd)
return -EUNATCH;
skb = alloc_skb(sizeof(struct atmarp_ctrl),GFP_ATOMIC); skb = alloc_skb(sizeof(struct atmarp_ctrl),GFP_ATOMIC);
if (!skb) return -ENOMEM; if (!skb)
return -ENOMEM;
ctrl = (struct atmarp_ctrl *) skb_put(skb,sizeof(struct atmarp_ctrl)); ctrl = (struct atmarp_ctrl *) skb_put(skb,sizeof(struct atmarp_ctrl));
ctrl->type = type; ctrl->type = type;
ctrl->itf_num = itf; ctrl->itf_num = itf;
ctrl->ip = ip; ctrl->ip = ip;
atm_force_charge(atmarpd,skb->truesize); atm_force_charge(atmarpd, skb->truesize);
sk = sk_atm(atmarpd); sk = sk_atm(atmarpd);
skb_queue_tail(&sk->sk_receive_queue, skb); skb_queue_tail(&sk->sk_receive_queue, skb);
...@@ -77,26 +78,24 @@ static int to_atmarpd(enum atmarp_ctrl_type type,int itf,unsigned long ip) ...@@ -77,26 +78,24 @@ static int to_atmarpd(enum atmarp_ctrl_type type,int itf,unsigned long ip)
return 0; return 0;
} }
static void link_vcc(struct clip_vcc *clip_vcc, struct atmarp_entry *entry)
static void link_vcc(struct clip_vcc *clip_vcc,struct atmarp_entry *entry)
{ {
DPRINTK("link_vcc %p to entry %p (neigh %p)\n",clip_vcc,entry, DPRINTK("link_vcc %p to entry %p (neigh %p)\n", clip_vcc, entry,
entry->neigh); entry->neigh);
clip_vcc->entry = entry; clip_vcc->entry = entry;
clip_vcc->xoff = 0; /* @@@ may overrun buffer by one packet */ clip_vcc->xoff = 0; /* @@@ may overrun buffer by one packet */
clip_vcc->next = entry->vccs; clip_vcc->next = entry->vccs;
entry->vccs = clip_vcc; entry->vccs = clip_vcc;
entry->neigh->used = jiffies; entry->neigh->used = jiffies;
} }
static void unlink_clip_vcc(struct clip_vcc *clip_vcc) static void unlink_clip_vcc(struct clip_vcc *clip_vcc)
{ {
struct atmarp_entry *entry = clip_vcc->entry; struct atmarp_entry *entry = clip_vcc->entry;
struct clip_vcc **walk; struct clip_vcc **walk;
if (!entry) { if (!entry) {
printk(KERN_CRIT "!clip_vcc->entry (clip_vcc %p)\n",clip_vcc); printk(KERN_CRIT "!clip_vcc->entry (clip_vcc %p)\n", clip_vcc);
return; return;
} }
spin_lock_bh(&entry->neigh->dev->xmit_lock); /* block clip_start_xmit() */ spin_lock_bh(&entry->neigh->dev->xmit_lock); /* block clip_start_xmit() */
...@@ -105,24 +104,24 @@ static void unlink_clip_vcc(struct clip_vcc *clip_vcc) ...@@ -105,24 +104,24 @@ static void unlink_clip_vcc(struct clip_vcc *clip_vcc)
if (*walk == clip_vcc) { if (*walk == clip_vcc) {
int error; int error;
*walk = clip_vcc->next; /* atomic */ *walk = clip_vcc->next; /* atomic */
clip_vcc->entry = NULL; clip_vcc->entry = NULL;
if (clip_vcc->xoff) if (clip_vcc->xoff)
netif_wake_queue(entry->neigh->dev); netif_wake_queue(entry->neigh->dev);
if (entry->vccs) if (entry->vccs)
goto out; goto out;
entry->expires = jiffies-1; entry->expires = jiffies - 1;
/* force resolution or expiration */ /* force resolution or expiration */
error = neigh_update(entry->neigh, NULL, NUD_NONE, error = neigh_update(entry->neigh, NULL, NUD_NONE,
NEIGH_UPDATE_F_ADMIN); NEIGH_UPDATE_F_ADMIN);
if (error) if (error)
printk(KERN_CRIT "unlink_clip_vcc: " printk(KERN_CRIT "unlink_clip_vcc: "
"neigh_update failed with %d\n",error); "neigh_update failed with %d\n", error);
goto out; goto out;
} }
printk(KERN_CRIT "ATMARP: unlink_clip_vcc failed (entry %p, vcc " printk(KERN_CRIT "ATMARP: unlink_clip_vcc failed (entry %p, vcc "
"0x%p)\n",entry,clip_vcc); "0x%p)\n", entry, clip_vcc);
out: out:
spin_unlock_bh(&entry->neigh->dev->xmit_lock); spin_unlock_bh(&entry->neigh->dev->xmit_lock);
} }
...@@ -151,13 +150,13 @@ static int neigh_check_cb(struct neighbour *n) ...@@ -151,13 +150,13 @@ static int neigh_check_cb(struct neighbour *n)
DPRINTK("destruction postponed with ref %d\n", DPRINTK("destruction postponed with ref %d\n",
atomic_read(&n->refcnt)); atomic_read(&n->refcnt));
while ((skb = skb_dequeue(&n->arp_queue)) != NULL) while ((skb = skb_dequeue(&n->arp_queue)) != NULL)
dev_kfree_skb(skb); dev_kfree_skb(skb);
return 0; return 0;
} }
DPRINTK("expired neigh %p\n",n); DPRINTK("expired neigh %p\n", n);
return 1; return 1;
} }
...@@ -165,7 +164,7 @@ static void idle_timer_check(unsigned long dummy) ...@@ -165,7 +164,7 @@ static void idle_timer_check(unsigned long dummy)
{ {
write_lock(&clip_tbl.lock); write_lock(&clip_tbl.lock);
__neigh_for_each_release(&clip_tbl, neigh_check_cb); __neigh_for_each_release(&clip_tbl, neigh_check_cb);
mod_timer(&idle_timer, jiffies+CLIP_CHECK_INTERVAL*HZ); mod_timer(&idle_timer, jiffies + CLIP_CHECK_INTERVAL * HZ);
write_unlock(&clip_tbl.lock); write_unlock(&clip_tbl.lock);
} }
...@@ -175,13 +174,13 @@ static int clip_arp_rcv(struct sk_buff *skb) ...@@ -175,13 +174,13 @@ static int clip_arp_rcv(struct sk_buff *skb)
DPRINTK("clip_arp_rcv\n"); DPRINTK("clip_arp_rcv\n");
vcc = ATM_SKB(skb)->vcc; vcc = ATM_SKB(skb)->vcc;
if (!vcc || !atm_charge(vcc,skb->truesize)) { if (!vcc || !atm_charge(vcc, skb->truesize)) {
dev_kfree_skb_any(skb); dev_kfree_skb_any(skb);
return 0; return 0;
} }
DPRINTK("pushing to %p\n",vcc); DPRINTK("pushing to %p\n", vcc);
DPRINTK("using %p\n",CLIP_VCC(vcc)->old_push); DPRINTK("using %p\n", CLIP_VCC(vcc)->old_push);
CLIP_VCC(vcc)->old_push(vcc,skb); CLIP_VCC(vcc)->old_push(vcc, skb);
return 0; return 0;
} }
...@@ -191,34 +190,38 @@ static const unsigned char llc_oui[] = { ...@@ -191,34 +190,38 @@ static const unsigned char llc_oui[] = {
0x03, /* Ctrl: Unnumbered Information Command PDU */ 0x03, /* Ctrl: Unnumbered Information Command PDU */
0x00, /* OUI: EtherType */ 0x00, /* OUI: EtherType */
0x00, 0x00,
0x00 }; 0x00
};
static 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); struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
DPRINTK("clip push\n"); DPRINTK("clip push\n");
if (!skb) { if (!skb) {
DPRINTK("removing VCC %p\n",clip_vcc); DPRINTK("removing VCC %p\n", clip_vcc);
if (clip_vcc->entry) unlink_clip_vcc(clip_vcc); if (clip_vcc->entry)
clip_vcc->old_push(vcc,NULL); /* pass on the bad news */ unlink_clip_vcc(clip_vcc);
clip_vcc->old_push(vcc, NULL); /* pass on the bad news */
kfree(clip_vcc); kfree(clip_vcc);
return; return;
} }
atm_return(vcc,skb->truesize); atm_return(vcc, skb->truesize);
skb->dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : clip_devs; skb->dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : clip_devs;
/* clip_vcc->entry == NULL if we don't have an IP address yet */ /* clip_vcc->entry == NULL if we don't have an IP address yet */
if (!skb->dev) { if (!skb->dev) {
dev_kfree_skb_any(skb); dev_kfree_skb_any(skb);
return; return;
} }
ATM_SKB(skb)->vcc = vcc; ATM_SKB(skb)->vcc = vcc;
skb->mac.raw = skb->data; skb->mac.raw = skb->data;
if (!clip_vcc->encap || skb->len < RFC1483LLC_LEN || memcmp(skb->data, if (!clip_vcc->encap
llc_oui,sizeof(llc_oui))) skb->protocol = htons(ETH_P_IP); || skb->len < RFC1483LLC_LEN
|| memcmp(skb->data, llc_oui, sizeof (llc_oui)))
skb->protocol = htons(ETH_P_IP);
else { else {
skb->protocol = ((u16 *) skb->data)[3]; skb->protocol = ((u16 *) skb->data)[3];
skb_pull(skb,RFC1483LLC_LEN); skb_pull(skb, RFC1483LLC_LEN);
if (skb->protocol == htons(ETH_P_ARP)) { if (skb->protocol == htons(ETH_P_ARP)) {
PRIV(skb->dev)->stats.rx_packets++; PRIV(skb->dev)->stats.rx_packets++;
PRIV(skb->dev)->stats.rx_bytes += skb->len; PRIV(skb->dev)->stats.rx_bytes += skb->len;
...@@ -233,58 +236,54 @@ static void clip_push(struct atm_vcc *vcc,struct sk_buff *skb) ...@@ -233,58 +236,54 @@ static void clip_push(struct atm_vcc *vcc,struct sk_buff *skb)
netif_rx(skb); netif_rx(skb);
} }
/* /*
* Note: these spinlocks _must_not_ block on non-SMP. The only goal is that * Note: these spinlocks _must_not_ block on non-SMP. The only goal is that
* clip_pop is atomic with respect to the critical section in clip_start_xmit. * clip_pop is atomic with respect to the critical section in clip_start_xmit.
*/ */
static void clip_pop(struct atm_vcc *vcc, struct sk_buff *skb)
static void clip_pop(struct atm_vcc *vcc,struct sk_buff *skb)
{ {
struct clip_vcc *clip_vcc = CLIP_VCC(vcc); struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
struct net_device *dev = skb->dev; struct net_device *dev = skb->dev;
int old; int old;
unsigned long flags; unsigned long flags;
DPRINTK("clip_pop(vcc %p)\n",vcc); DPRINTK("clip_pop(vcc %p)\n", vcc);
clip_vcc->old_pop(vcc,skb); clip_vcc->old_pop(vcc, skb);
/* skb->dev == NULL in outbound ARP packets */ /* skb->dev == NULL in outbound ARP packets */
if (!dev) return; if (!dev)
spin_lock_irqsave(&PRIV(dev)->xoff_lock,flags); return;
if (atm_may_send(vcc,0)) { spin_lock_irqsave(&PRIV(dev)->xoff_lock, flags);
old = xchg(&clip_vcc->xoff,0); if (atm_may_send(vcc, 0)) {
if (old) netif_wake_queue(dev); old = xchg(&clip_vcc->xoff, 0);
if (old)
netif_wake_queue(dev);
} }
spin_unlock_irqrestore(&PRIV(dev)->xoff_lock,flags); spin_unlock_irqrestore(&PRIV(dev)->xoff_lock, flags);
} }
static void clip_neigh_destroy(struct neighbour *neigh) static void clip_neigh_destroy(struct neighbour *neigh)
{ {
DPRINTK("clip_neigh_destroy (neigh %p)\n",neigh); DPRINTK("clip_neigh_destroy (neigh %p)\n", neigh);
if (NEIGH2ENTRY(neigh)->vccs) if (NEIGH2ENTRY(neigh)->vccs)
printk(KERN_CRIT "clip_neigh_destroy: vccs != NULL !!!\n"); printk(KERN_CRIT "clip_neigh_destroy: vccs != NULL !!!\n");
NEIGH2ENTRY(neigh)->vccs = (void *) 0xdeadbeef; NEIGH2ENTRY(neigh)->vccs = (void *) 0xdeadbeef;
} }
static void clip_neigh_solicit(struct neighbour *neigh, struct sk_buff *skb)
static void clip_neigh_solicit(struct neighbour *neigh,struct sk_buff *skb)
{ {
DPRINTK("clip_neigh_solicit (neigh %p, skb %p)\n",neigh,skb); DPRINTK("clip_neigh_solicit (neigh %p, skb %p)\n", neigh, skb);
to_atmarpd(act_need,PRIV(neigh->dev)->number,NEIGH2ENTRY(neigh)->ip); to_atmarpd(act_need, PRIV(neigh->dev)->number, NEIGH2ENTRY(neigh)->ip);
} }
static void clip_neigh_error(struct neighbour *neigh, struct sk_buff *skb)
static void clip_neigh_error(struct neighbour *neigh,struct sk_buff *skb)
{ {
#ifndef CONFIG_ATM_CLIP_NO_ICMP #ifndef CONFIG_ATM_CLIP_NO_ICMP
icmp_send(skb,ICMP_DEST_UNREACH,ICMP_HOST_UNREACH,0); icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_UNREACH, 0);
#endif #endif
kfree_skb(skb); kfree_skb(skb);
} }
static struct neigh_ops clip_neigh_ops = { static struct neigh_ops clip_neigh_ops = {
.family = AF_INET, .family = AF_INET,
.solicit = clip_neigh_solicit, .solicit = clip_neigh_solicit,
...@@ -295,7 +294,6 @@ static struct neigh_ops clip_neigh_ops = { ...@@ -295,7 +294,6 @@ static struct neigh_ops clip_neigh_ops = {
.queue_xmit = dev_queue_xmit, .queue_xmit = dev_queue_xmit,
}; };
static int clip_constructor(struct neighbour *neigh) static int clip_constructor(struct neighbour *neigh)
{ {
struct atmarp_entry *entry = NEIGH2ENTRY(neigh); struct atmarp_entry *entry = NEIGH2ENTRY(neigh);
...@@ -303,9 +301,10 @@ static int clip_constructor(struct neighbour *neigh) ...@@ -303,9 +301,10 @@ static int clip_constructor(struct neighbour *neigh)
struct in_device *in_dev; struct in_device *in_dev;
struct neigh_parms *parms; struct neigh_parms *parms;
DPRINTK("clip_constructor (neigh %p, entry %p)\n",neigh,entry); DPRINTK("clip_constructor (neigh %p, entry %p)\n", neigh, entry);
neigh->type = inet_addr_type(entry->ip); neigh->type = inet_addr_type(entry->ip);
if (neigh->type != RTN_UNICAST) return -EINVAL; if (neigh->type != RTN_UNICAST)
return -EINVAL;
rcu_read_lock(); rcu_read_lock();
in_dev = __in_dev_get_rcu(dev); in_dev = __in_dev_get_rcu(dev);
...@@ -324,13 +323,13 @@ static int clip_constructor(struct neighbour *neigh) ...@@ -324,13 +323,13 @@ static int clip_constructor(struct neighbour *neigh)
neigh->ops->connected_output : neigh->ops->output; neigh->ops->connected_output : neigh->ops->output;
entry->neigh = neigh; entry->neigh = neigh;
entry->vccs = NULL; entry->vccs = NULL;
entry->expires = jiffies-1; entry->expires = jiffies - 1;
return 0; return 0;
} }
static u32 clip_hash(const void *pkey, const struct net_device *dev) static u32 clip_hash(const void *pkey, const struct net_device *dev)
{ {
return jhash_2words(*(u32 *)pkey, dev->ifindex, clip_tbl.hash_rnd); return jhash_2words(*(u32 *) pkey, dev->ifindex, clip_tbl.hash_rnd);
} }
static struct neigh_table clip_tbl = { static struct neigh_table clip_tbl = {
...@@ -364,7 +363,6 @@ static struct neigh_table clip_tbl = { ...@@ -364,7 +363,6 @@ static struct neigh_table clip_tbl = {
.gc_thresh3 = 1024, .gc_thresh3 = 1024,
}; };
/* @@@ copy bh locking from arp.c -- need to bh-enable atm code before */ /* @@@ copy bh locking from arp.c -- need to bh-enable atm code before */
/* /*
...@@ -374,15 +372,13 @@ static struct neigh_table clip_tbl = { ...@@ -374,15 +372,13 @@ static struct neigh_table clip_tbl = {
* clip_setentry. * clip_setentry.
*/ */
static int clip_encap(struct atm_vcc *vcc, int mode)
static int clip_encap(struct atm_vcc *vcc,int mode)
{ {
CLIP_VCC(vcc)->encap = mode; CLIP_VCC(vcc)->encap = mode;
return 0; return 0;
} }
static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
static int clip_start_xmit(struct sk_buff *skb,struct net_device *dev)
{ {
struct clip_priv *clip_priv = PRIV(dev); struct clip_priv *clip_priv = PRIV(dev);
struct atmarp_entry *entry; struct atmarp_entry *entry;
...@@ -390,7 +386,7 @@ static int clip_start_xmit(struct sk_buff *skb,struct net_device *dev) ...@@ -390,7 +386,7 @@ static int clip_start_xmit(struct sk_buff *skb,struct net_device *dev)
int old; int old;
unsigned long flags; unsigned long flags;
DPRINTK("clip_start_xmit (skb %p)\n",skb); DPRINTK("clip_start_xmit (skb %p)\n", skb);
if (!skb->dst) { if (!skb->dst) {
printk(KERN_ERR "clip_start_xmit: skb->dst == NULL\n"); printk(KERN_ERR "clip_start_xmit: skb->dst == NULL\n");
dev_kfree_skb(skb); dev_kfree_skb(skb);
...@@ -399,9 +395,9 @@ static int clip_start_xmit(struct sk_buff *skb,struct net_device *dev) ...@@ -399,9 +395,9 @@ static int clip_start_xmit(struct sk_buff *skb,struct net_device *dev)
} }
if (!skb->dst->neighbour) { if (!skb->dst->neighbour) {
#if 0 #if 0
skb->dst->neighbour = clip_find_neighbour(skb->dst,1); skb->dst->neighbour = clip_find_neighbour(skb->dst, 1);
if (!skb->dst->neighbour) { if (!skb->dst->neighbour) {
dev_kfree_skb(skb); /* lost that one */ dev_kfree_skb(skb); /* lost that one */
clip_priv->stats.tx_dropped++; clip_priv->stats.tx_dropped++;
return 0; return 0;
} }
...@@ -415,73 +411,73 @@ static int clip_start_xmit(struct sk_buff *skb,struct net_device *dev) ...@@ -415,73 +411,73 @@ static int clip_start_xmit(struct sk_buff *skb,struct net_device *dev)
if (!entry->vccs) { if (!entry->vccs) {
if (time_after(jiffies, entry->expires)) { if (time_after(jiffies, entry->expires)) {
/* should be resolved */ /* should be resolved */
entry->expires = jiffies+ATMARP_RETRY_DELAY*HZ; entry->expires = jiffies + ATMARP_RETRY_DELAY * HZ;
to_atmarpd(act_need,PRIV(dev)->number,entry->ip); to_atmarpd(act_need, PRIV(dev)->number, entry->ip);
} }
if (entry->neigh->arp_queue.qlen < ATMARP_MAX_UNRES_PACKETS) if (entry->neigh->arp_queue.qlen < ATMARP_MAX_UNRES_PACKETS)
skb_queue_tail(&entry->neigh->arp_queue,skb); skb_queue_tail(&entry->neigh->arp_queue, skb);
else { else {
dev_kfree_skb(skb); dev_kfree_skb(skb);
clip_priv->stats.tx_dropped++; clip_priv->stats.tx_dropped++;
} }
return 0; return 0;
} }
DPRINTK("neigh %p, vccs %p\n",entry,entry->vccs); DPRINTK("neigh %p, vccs %p\n", entry, entry->vccs);
ATM_SKB(skb)->vcc = vcc = entry->vccs->vcc; ATM_SKB(skb)->vcc = vcc = entry->vccs->vcc;
DPRINTK("using neighbour %p, vcc %p\n",skb->dst->neighbour,vcc); DPRINTK("using neighbour %p, vcc %p\n", skb->dst->neighbour, vcc);
if (entry->vccs->encap) { if (entry->vccs->encap) {
void *here; void *here;
here = skb_push(skb,RFC1483LLC_LEN); here = skb_push(skb, RFC1483LLC_LEN);
memcpy(here,llc_oui,sizeof(llc_oui)); memcpy(here, llc_oui, sizeof(llc_oui));
((u16 *) here)[3] = skb->protocol; ((u16 *) here)[3] = skb->protocol;
} }
atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
ATM_SKB(skb)->atm_options = vcc->atm_options; ATM_SKB(skb)->atm_options = vcc->atm_options;
entry->vccs->last_use = jiffies; entry->vccs->last_use = jiffies;
DPRINTK("atm_skb(%p)->vcc(%p)->dev(%p)\n",skb,vcc,vcc->dev); DPRINTK("atm_skb(%p)->vcc(%p)->dev(%p)\n", skb, vcc, vcc->dev);
old = xchg(&entry->vccs->xoff,1); /* assume XOFF ... */ old = xchg(&entry->vccs->xoff, 1); /* assume XOFF ... */
if (old) { if (old) {
printk(KERN_WARNING "clip_start_xmit: XOFF->XOFF transition\n"); printk(KERN_WARNING "clip_start_xmit: XOFF->XOFF transition\n");
return 0; return 0;
} }
clip_priv->stats.tx_packets++; clip_priv->stats.tx_packets++;
clip_priv->stats.tx_bytes += skb->len; clip_priv->stats.tx_bytes += skb->len;
(void) vcc->send(vcc,skb); (void)vcc->send(vcc, skb);
if (atm_may_send(vcc,0)) { if (atm_may_send(vcc, 0)) {
entry->vccs->xoff = 0; entry->vccs->xoff = 0;
return 0; return 0;
} }
spin_lock_irqsave(&clip_priv->xoff_lock,flags); spin_lock_irqsave(&clip_priv->xoff_lock, flags);
netif_stop_queue(dev); /* XOFF -> throttle immediately */ netif_stop_queue(dev); /* XOFF -> throttle immediately */
barrier(); barrier();
if (!entry->vccs->xoff) if (!entry->vccs->xoff)
netif_start_queue(dev); netif_start_queue(dev);
/* Oh, we just raced with clip_pop. netif_start_queue should be /* Oh, we just raced with clip_pop. netif_start_queue should be
good enough, because nothing should really be asleep because good enough, because nothing should really be asleep because
of the brief netif_stop_queue. If this isn't true or if it of the brief netif_stop_queue. If this isn't true or if it
changes, use netif_wake_queue instead. */ changes, use netif_wake_queue instead. */
spin_unlock_irqrestore(&clip_priv->xoff_lock,flags); spin_unlock_irqrestore(&clip_priv->xoff_lock, flags);
return 0; return 0;
} }
static struct net_device_stats *clip_get_stats(struct net_device *dev) static struct net_device_stats *clip_get_stats(struct net_device *dev)
{ {
return &PRIV(dev)->stats; return &PRIV(dev)->stats;
} }
static 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 clip_vcc *clip_vcc;
struct sk_buff_head copy; struct sk_buff_head copy;
struct sk_buff *skb; struct sk_buff *skb;
if (!vcc->push) return -EBADFD; if (!vcc->push)
clip_vcc = kmalloc(sizeof(struct clip_vcc),GFP_KERNEL); return -EBADFD;
if (!clip_vcc) return -ENOMEM; clip_vcc = kmalloc(sizeof(struct clip_vcc), GFP_KERNEL);
DPRINTK("mkip clip_vcc %p vcc %p\n",clip_vcc,vcc); if (!clip_vcc)
return -ENOMEM;
DPRINTK("mkip clip_vcc %p vcc %p\n", clip_vcc, vcc);
clip_vcc->vcc = vcc; clip_vcc->vcc = vcc;
vcc->user_back = clip_vcc; vcc->user_back = clip_vcc;
set_bit(ATM_VF_IS_CLIP, &vcc->flags); set_bit(ATM_VF_IS_CLIP, &vcc->flags);
...@@ -489,7 +485,7 @@ static int clip_mkip(struct atm_vcc *vcc,int timeout) ...@@ -489,7 +485,7 @@ static int clip_mkip(struct atm_vcc *vcc,int timeout)
clip_vcc->xoff = 0; clip_vcc->xoff = 0;
clip_vcc->encap = 1; clip_vcc->encap = 1;
clip_vcc->last_use = jiffies; clip_vcc->last_use = jiffies;
clip_vcc->idle_timeout = timeout*HZ; clip_vcc->idle_timeout = timeout * HZ;
clip_vcc->old_push = vcc->push; clip_vcc->old_push = vcc->push;
clip_vcc->old_pop = vcc->pop; clip_vcc->old_pop = vcc->pop;
vcc->push = clip_push; vcc->push = clip_push;
...@@ -499,27 +495,25 @@ static int clip_mkip(struct atm_vcc *vcc,int timeout) ...@@ -499,27 +495,25 @@ static int clip_mkip(struct atm_vcc *vcc,int timeout)
/* re-process everything received between connection setup and MKIP */ /* re-process everything received between connection setup and MKIP */
while ((skb = skb_dequeue(&copy)) != NULL) while ((skb = skb_dequeue(&copy)) != NULL)
if (!clip_devs) { if (!clip_devs) {
atm_return(vcc,skb->truesize); atm_return(vcc, skb->truesize);
kfree_skb(skb); kfree_skb(skb);
} } else {
else {
unsigned int len = skb->len; unsigned int len = skb->len;
clip_push(vcc,skb); clip_push(vcc, skb);
PRIV(skb->dev)->stats.rx_packets--; PRIV(skb->dev)->stats.rx_packets--;
PRIV(skb->dev)->stats.rx_bytes -= len; PRIV(skb->dev)->stats.rx_bytes -= len;
} }
return 0; return 0;
} }
static int clip_setentry(struct atm_vcc *vcc, u32 ip)
static int clip_setentry(struct atm_vcc *vcc,u32 ip)
{ {
struct neighbour *neigh; struct neighbour *neigh;
struct atmarp_entry *entry; struct atmarp_entry *entry;
int error; int error;
struct clip_vcc *clip_vcc; struct clip_vcc *clip_vcc;
struct flowi fl = { .nl_u = { .ip4_u = { .daddr = ip, .tos = 1 } } }; struct flowi fl = { .nl_u = { .ip4_u = { .daddr = ip, .tos = 1}} };
struct rtable *rt; struct rtable *rt;
if (vcc->push != clip_push) { if (vcc->push != clip_push) {
...@@ -536,28 +530,29 @@ static int clip_setentry(struct atm_vcc *vcc,u32 ip) ...@@ -536,28 +530,29 @@ static int clip_setentry(struct atm_vcc *vcc,u32 ip)
unlink_clip_vcc(clip_vcc); unlink_clip_vcc(clip_vcc);
return 0; return 0;
} }
error = ip_route_output_key(&rt,&fl); error = ip_route_output_key(&rt, &fl);
if (error) return error; if (error)
neigh = __neigh_lookup(&clip_tbl,&ip,rt->u.dst.dev,1); return error;
neigh = __neigh_lookup(&clip_tbl, &ip, rt->u.dst.dev, 1);
ip_rt_put(rt); ip_rt_put(rt);
if (!neigh) if (!neigh)
return -ENOMEM; return -ENOMEM;
entry = NEIGH2ENTRY(neigh); entry = NEIGH2ENTRY(neigh);
if (entry != clip_vcc->entry) { if (entry != clip_vcc->entry) {
if (!clip_vcc->entry) DPRINTK("setentry: add\n"); if (!clip_vcc->entry)
DPRINTK("setentry: add\n");
else { else {
DPRINTK("setentry: update\n"); DPRINTK("setentry: update\n");
unlink_clip_vcc(clip_vcc); unlink_clip_vcc(clip_vcc);
} }
link_vcc(clip_vcc,entry); link_vcc(clip_vcc, entry);
} }
error = neigh_update(neigh, llc_oui, NUD_PERMANENT, error = neigh_update(neigh, llc_oui, NUD_PERMANENT,
NEIGH_UPDATE_F_OVERRIDE|NEIGH_UPDATE_F_ADMIN); NEIGH_UPDATE_F_OVERRIDE | NEIGH_UPDATE_F_ADMIN);
neigh_release(neigh); neigh_release(neigh);
return error; return error;
} }
static void clip_setup(struct net_device *dev) static void clip_setup(struct net_device *dev)
{ {
dev->hard_start_xmit = clip_start_xmit; dev->hard_start_xmit = clip_start_xmit;
...@@ -566,15 +561,14 @@ static void clip_setup(struct net_device *dev) ...@@ -566,15 +561,14 @@ static void clip_setup(struct net_device *dev)
dev->type = ARPHRD_ATM; dev->type = ARPHRD_ATM;
dev->hard_header_len = RFC1483LLC_LEN; dev->hard_header_len = RFC1483LLC_LEN;
dev->mtu = RFC1626_MTU; dev->mtu = RFC1626_MTU;
dev->tx_queue_len = 100; /* "normal" queue (packets) */ dev->tx_queue_len = 100; /* "normal" queue (packets) */
/* When using a "real" qdisc, the qdisc determines the queue */ /* When using a "real" qdisc, the qdisc determines the queue */
/* length. tx_queue_len is only used for the default case, */ /* length. tx_queue_len is only used for the default case, */
/* without any more elaborate queuing. 100 is a reasonable */ /* without any more elaborate queuing. 100 is a reasonable */
/* compromise between decent burst-tolerance and protection */ /* compromise between decent burst-tolerance and protection */
/* against memory hogs. */ /* against memory hogs. */
} }
static int clip_create(int number) static int clip_create(int number)
{ {
struct net_device *dev; struct net_device *dev;
...@@ -583,19 +577,19 @@ static int clip_create(int number) ...@@ -583,19 +577,19 @@ static int clip_create(int number)
if (number != -1) { if (number != -1) {
for (dev = clip_devs; dev; dev = PRIV(dev)->next) for (dev = clip_devs; dev; dev = PRIV(dev)->next)
if (PRIV(dev)->number == number) return -EEXIST; if (PRIV(dev)->number == number)
} return -EEXIST;
else { } else {
number = 0; number = 0;
for (dev = clip_devs; dev; dev = PRIV(dev)->next) for (dev = clip_devs; dev; dev = PRIV(dev)->next)
if (PRIV(dev)->number >= number) if (PRIV(dev)->number >= number)
number = PRIV(dev)->number+1; number = PRIV(dev)->number + 1;
} }
dev = alloc_netdev(sizeof(struct clip_priv), "", clip_setup); dev = alloc_netdev(sizeof(struct clip_priv), "", clip_setup);
if (!dev) if (!dev)
return -ENOMEM; return -ENOMEM;
clip_priv = PRIV(dev); clip_priv = PRIV(dev);
sprintf(dev->name,"atm%d",number); sprintf(dev->name, "atm%d", number);
spin_lock_init(&clip_priv->xoff_lock); spin_lock_init(&clip_priv->xoff_lock);
clip_priv->number = number; clip_priv->number = number;
error = register_netdev(dev); error = register_netdev(dev);
...@@ -605,12 +599,11 @@ static int clip_create(int number) ...@@ -605,12 +599,11 @@ static int clip_create(int number)
} }
clip_priv->next = clip_devs; clip_priv->next = clip_devs;
clip_devs = dev; clip_devs = dev;
DPRINTK("registered (net:%s)\n",dev->name); DPRINTK("registered (net:%s)\n", dev->name);
return number; return number;
} }
static int clip_device_event(struct notifier_block *this, unsigned long event,
static int clip_device_event(struct notifier_block *this,unsigned long event,
void *arg) void *arg)
{ {
struct net_device *dev = arg; struct net_device *dev = arg;
...@@ -625,40 +618,39 @@ static int clip_device_event(struct notifier_block *this,unsigned long event, ...@@ -625,40 +618,39 @@ static int clip_device_event(struct notifier_block *this,unsigned long event,
return NOTIFY_DONE; return NOTIFY_DONE;
switch (event) { switch (event) {
case NETDEV_UP: case NETDEV_UP:
DPRINTK("clip_device_event NETDEV_UP\n"); DPRINTK("clip_device_event NETDEV_UP\n");
(void) to_atmarpd(act_up,PRIV(dev)->number,0); (void)to_atmarpd(act_up, PRIV(dev)->number, 0);
break; break;
case NETDEV_GOING_DOWN: case NETDEV_GOING_DOWN:
DPRINTK("clip_device_event NETDEV_DOWN\n"); DPRINTK("clip_device_event NETDEV_DOWN\n");
(void) to_atmarpd(act_down,PRIV(dev)->number,0); (void)to_atmarpd(act_down, PRIV(dev)->number, 0);
break; break;
case NETDEV_CHANGE: case NETDEV_CHANGE:
case NETDEV_CHANGEMTU: case NETDEV_CHANGEMTU:
DPRINTK("clip_device_event NETDEV_CHANGE*\n"); DPRINTK("clip_device_event NETDEV_CHANGE*\n");
(void) to_atmarpd(act_change,PRIV(dev)->number,0); (void)to_atmarpd(act_change, PRIV(dev)->number, 0);
break; break;
case NETDEV_REBOOT: case NETDEV_REBOOT:
case NETDEV_REGISTER: case NETDEV_REGISTER:
case NETDEV_DOWN: case NETDEV_DOWN:
DPRINTK("clip_device_event %ld\n",event); DPRINTK("clip_device_event %ld\n", event);
/* ignore */ /* ignore */
break; break;
default: default:
printk(KERN_WARNING "clip_device_event: unknown event " printk(KERN_WARNING "clip_device_event: unknown event "
"%ld\n",event); "%ld\n", event);
break; break;
} }
return NOTIFY_DONE; return NOTIFY_DONE;
} }
static int clip_inet_event(struct notifier_block *this, unsigned long event,
static int clip_inet_event(struct notifier_block *this,unsigned long event, void *ifa)
void *ifa)
{ {
struct in_device *in_dev; struct in_device *in_dev;
in_dev = ((struct in_ifaddr *) ifa)->ifa_dev; in_dev = ((struct in_ifaddr *)ifa)->ifa_dev;
if (!in_dev || !in_dev->dev) { if (!in_dev || !in_dev->dev) {
printk(KERN_WARNING "clip_inet_event: no device\n"); printk(KERN_WARNING "clip_inet_event: no device\n");
return NOTIFY_DONE; return NOTIFY_DONE;
...@@ -667,8 +659,9 @@ static int clip_inet_event(struct notifier_block *this,unsigned long event, ...@@ -667,8 +659,9 @@ static int clip_inet_event(struct notifier_block *this,unsigned long event,
* Transitions are of the down-change-up type, so it's sufficient to * Transitions are of the down-change-up type, so it's sufficient to
* handle the change on up. * handle the change on up.
*/ */
if (event != NETDEV_UP) return NOTIFY_DONE; if (event != NETDEV_UP)
return clip_device_event(this,NETDEV_CHANGE,in_dev->dev); return NOTIFY_DONE;
return clip_device_event(this, NETDEV_CHANGE, in_dev->dev);
} }
...@@ -744,53 +737,53 @@ static int clip_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) ...@@ -744,53 +737,53 @@ static int clip_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
int err = 0; int err = 0;
switch (cmd) { switch (cmd) {
case SIOCMKCLIP: case SIOCMKCLIP:
case ATMARPD_CTRL: case ATMARPD_CTRL:
case ATMARP_MKIP: case ATMARP_MKIP:
case ATMARP_SETENTRY: case ATMARP_SETENTRY:
case ATMARP_ENCAP: case ATMARP_ENCAP:
if (!capable(CAP_NET_ADMIN)) if (!capable(CAP_NET_ADMIN))
return -EPERM; return -EPERM;
break; break;
default: default:
return -ENOIOCTLCMD; return -ENOIOCTLCMD;
} }
switch (cmd) { switch (cmd) {
case SIOCMKCLIP: case SIOCMKCLIP:
err = clip_create(arg); err = clip_create(arg);
break; break;
case ATMARPD_CTRL: case ATMARPD_CTRL:
err = atm_init_atmarp(vcc); err = atm_init_atmarp(vcc);
if (!err) { if (!err) {
sock->state = SS_CONNECTED; sock->state = SS_CONNECTED;
__module_get(THIS_MODULE); __module_get(THIS_MODULE);
} }
break; break;
case ATMARP_MKIP: case ATMARP_MKIP:
err = clip_mkip(vcc ,arg); err = clip_mkip(vcc, arg);
break; break;
case ATMARP_SETENTRY: case ATMARP_SETENTRY:
err = clip_setentry(vcc, arg); err = clip_setentry(vcc, arg);
break; break;
case ATMARP_ENCAP: case ATMARP_ENCAP:
err = clip_encap(vcc, arg); err = clip_encap(vcc, arg);
break; break;
} }
return err; return err;
} }
static struct atm_ioctl clip_ioctl_ops = { static struct atm_ioctl clip_ioctl_ops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.ioctl = clip_ioctl, .ioctl = clip_ioctl,
}; };
#ifdef CONFIG_PROC_FS #ifdef CONFIG_PROC_FS
static void svc_addr(struct seq_file *seq, struct sockaddr_atmsvc *addr) static void svc_addr(struct seq_file *seq, struct sockaddr_atmsvc *addr)
{ {
static int code[] = { 1,2,10,6,1,0 }; static int code[] = { 1, 2, 10, 6, 1, 0 };
static int e164[] = { 1,8,4,6,1,0 }; static int e164[] = { 1, 8, 4, 6, 1, 0 };
if (*addr->sas_addr.pub) { if (*addr->sas_addr.pub) {
seq_printf(seq, "%s", addr->sas_addr.pub); seq_printf(seq, "%s", addr->sas_addr.pub);
...@@ -809,7 +802,7 @@ static void svc_addr(struct seq_file *seq, struct sockaddr_atmsvc *addr) ...@@ -809,7 +802,7 @@ static void svc_addr(struct seq_file *seq, struct sockaddr_atmsvc *addr)
for (i = 0; fields[i]; i++) { for (i = 0; fields[i]; i++) {
for (j = fields[i]; j; j--) for (j = fields[i]; j; j--)
seq_printf(seq, "%02X", *prv++); seq_printf(seq, "%02X", *prv++);
if (fields[i+1]) if (fields[i + 1])
seq_putc(seq, '.'); seq_putc(seq, '.');
} }
} }
...@@ -828,8 +821,7 @@ static void atmarp_info(struct seq_file *seq, struct net_device *dev, ...@@ -828,8 +821,7 @@ static void atmarp_info(struct seq_file *seq, struct net_device *dev,
svc = ((clip_vcc == SEQ_NO_VCC_TOKEN) || svc = ((clip_vcc == SEQ_NO_VCC_TOKEN) ||
(sk_atm(clip_vcc->vcc)->sk_family == AF_ATMSVC)); (sk_atm(clip_vcc->vcc)->sk_family == AF_ATMSVC));
llc = ((clip_vcc == SEQ_NO_VCC_TOKEN) || llc = ((clip_vcc == SEQ_NO_VCC_TOKEN) || clip_vcc->encap);
clip_vcc->encap);
if (clip_vcc == SEQ_NO_VCC_TOKEN) if (clip_vcc == SEQ_NO_VCC_TOKEN)
exp = entry->neigh->used; exp = entry->neigh->used;
...@@ -839,10 +831,7 @@ static void atmarp_info(struct seq_file *seq, struct net_device *dev, ...@@ -839,10 +831,7 @@ static void atmarp_info(struct seq_file *seq, struct net_device *dev,
exp = (jiffies - exp) / HZ; exp = (jiffies - exp) / HZ;
seq_printf(seq, "%-6s%-4s%-4s%5ld ", seq_printf(seq, "%-6s%-4s%-4s%5ld ",
dev->name, dev->name, svc ? "SVC" : "PVC", llc ? "LLC" : "NULL", exp);
svc ? "SVC" : "PVC",
llc ? "LLC" : "NULL",
exp);
off = scnprintf(buf, sizeof(buf) - 1, "%d.%d.%d.%d", off = scnprintf(buf, sizeof(buf) - 1, "%d.%d.%d.%d",
NIPQUAD(entry->ip)); NIPQUAD(entry->ip));
...@@ -860,8 +849,7 @@ static void atmarp_info(struct seq_file *seq, struct net_device *dev, ...@@ -860,8 +849,7 @@ static void atmarp_info(struct seq_file *seq, struct net_device *dev,
} else if (!svc) { } else if (!svc) {
seq_printf(seq, "%d.%d.%d\n", seq_printf(seq, "%d.%d.%d\n",
clip_vcc->vcc->dev->number, clip_vcc->vcc->dev->number,
clip_vcc->vcc->vpi, clip_vcc->vcc->vpi, clip_vcc->vcc->vci);
clip_vcc->vcc->vci);
} else { } else {
svc_addr(seq, &clip_vcc->vcc->remote); svc_addr(seq, &clip_vcc->vcc->remote);
seq_putc(seq, '\n'); seq_putc(seq, '\n');
...@@ -894,7 +882,7 @@ static struct clip_vcc *clip_seq_next_vcc(struct atmarp_entry *e, ...@@ -894,7 +882,7 @@ static struct clip_vcc *clip_seq_next_vcc(struct atmarp_entry *e,
} }
static void *clip_seq_vcc_walk(struct clip_seq_state *state, static void *clip_seq_vcc_walk(struct clip_seq_state *state,
struct atmarp_entry *e, loff_t *pos) struct atmarp_entry *e, loff_t * pos)
{ {
struct clip_vcc *vcc = state->vcc; struct clip_vcc *vcc = state->vcc;
...@@ -911,24 +899,24 @@ static void *clip_seq_vcc_walk(struct clip_seq_state *state, ...@@ -911,24 +899,24 @@ static void *clip_seq_vcc_walk(struct clip_seq_state *state,
return vcc; return vcc;
} }
static void *clip_seq_sub_iter(struct neigh_seq_state *_state, static void *clip_seq_sub_iter(struct neigh_seq_state *_state,
struct neighbour *n, loff_t *pos) struct neighbour *n, loff_t * pos)
{ {
struct clip_seq_state *state = (struct clip_seq_state *) _state; struct clip_seq_state *state = (struct clip_seq_state *)_state;
return clip_seq_vcc_walk(state, NEIGH2ENTRY(n), pos); return clip_seq_vcc_walk(state, NEIGH2ENTRY(n), pos);
} }
static void *clip_seq_start(struct seq_file *seq, loff_t *pos) static void *clip_seq_start(struct seq_file *seq, loff_t * pos)
{ {
return neigh_seq_start(seq, pos, &clip_tbl, NEIGH_SEQ_NEIGH_ONLY); return neigh_seq_start(seq, pos, &clip_tbl, NEIGH_SEQ_NEIGH_ONLY);
} }
static int clip_seq_show(struct seq_file *seq, void *v) static int clip_seq_show(struct seq_file *seq, void *v)
{ {
static char atm_arp_banner[] = static char atm_arp_banner[] =
"IPitf TypeEncp Idle IP address ATM address\n"; "IPitf TypeEncp Idle IP address ATM address\n";
if (v == SEQ_START_TOKEN) { if (v == SEQ_START_TOKEN) {
seq_puts(seq, atm_arp_banner); seq_puts(seq, atm_arp_banner);
...@@ -939,7 +927,7 @@ static int clip_seq_show(struct seq_file *seq, void *v) ...@@ -939,7 +927,7 @@ static int clip_seq_show(struct seq_file *seq, void *v)
atmarp_info(seq, n->dev, NEIGH2ENTRY(n), vcc); atmarp_info(seq, n->dev, NEIGH2ENTRY(n), vcc);
} }
return 0; return 0;
} }
static struct seq_operations arp_seq_ops = { static struct seq_operations arp_seq_ops = {
...@@ -998,13 +986,13 @@ static int __init atm_clip_init(void) ...@@ -998,13 +986,13 @@ static int __init atm_clip_init(void)
setup_timer(&idle_timer, idle_timer_check, 0); setup_timer(&idle_timer, idle_timer_check, 0);
#ifdef CONFIG_PROC_FS #ifdef CONFIG_PROC_FS
{ {
struct proc_dir_entry *p; struct proc_dir_entry *p;
p = create_proc_entry("arp", S_IRUGO, atm_proc_root); p = create_proc_entry("arp", S_IRUGO, atm_proc_root);
if (p) if (p)
p->proc_fops = &arp_seq_fops; p->proc_fops = &arp_seq_fops;
} }
#endif #endif
return 0; return 0;
......
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