net/atm/clip.c

88 static void link_vcc(struct clip_vcc *clip_vcc, struct atmarp_entry *entry)
90 	pr_debug("%p to entry %p (neigh %p)\n", clip_vcc, entry, entry->neigh);
91 	clip_vcc->entry = entry;
92 	clip_vcc->xoff = 0;	/* @@@ may overrun buffer by one packet */
93 	clip_vcc->next = entry->vccs;
94 	entry->vccs = clip_vcc;
98 static void unlink_clip_vcc(struct clip_vcc *clip_vcc)
100 	struct atmarp_entry *entry = clip_vcc->entry;
101 	struct clip_vcc **walk;
104 		pr_err("!clip_vcc->entry (clip_vcc %p)\n", clip_vcc);
110 		if (*walk == clip_vcc) {
113 			*walk = clip_vcc->next;	/* atomic */
114 			clip_vcc->entry = NULL;
115 			if (clip_vcc->xoff)
127 	pr_err("ATMARP: failed (entry %p, vcc 0x%p)\n", entry, clip_vcc);
136 	struct clip_vcc *cv;
204 	struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
209 		pr_debug("removing VCC %p\n", clip_vcc);
210 		if (clip_vcc->entry)
211 			unlink_clip_vcc(clip_vcc);
212 		clip_vcc->old_push(vcc, NULL);	/* pass on the bad news */
213 		kfree(clip_vcc);
222 	skb->dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : clip_devs;
223 	/* clip_vcc->entry == NULL if we don't have an IP address yet */
230 	if (!clip_vcc->encap ||
244 	clip_vcc->last_use = jiffies;
258 	struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
264 	clip_vcc->old_pop(vcc, skb);
270 		old = xchg(&clip_vcc->xoff, 0);
428 	struct clip_vcc *clip_vcc;
434 	clip_vcc = kmalloc(sizeof(struct clip_vcc), GFP_KERNEL);
435 	if (!clip_vcc)
437 	pr_debug("%p vcc %p\n", clip_vcc, vcc);
438 	clip_vcc->vcc = vcc;
439 	vcc->user_back = clip_vcc;
441 	clip_vcc->entry = NULL;
442 	clip_vcc->xoff = 0;
443 	clip_vcc->encap = 1;
444 	clip_vcc->last_use = jiffies;
445 	clip_vcc->idle_timeout = timeout * HZ;
446 	clip_vcc->old_push = vcc->push;
447 	clip_vcc->old_pop = vcc->pop;
462 	struct clip_vcc *clip_vcc;
469 	clip_vcc = CLIP_VCC(vcc);
471 		if (!clip_vcc->entry) {
476 		unlink_clip_vcc(clip_vcc);
487 	if (entry != clip_vcc->entry) {
488 		if (!clip_vcc->entry)
492 			unlink_clip_vcc(clip_vcc);
494 		link_vcc(clip_vcc, entry);
768 			struct atmarp_entry *entry, struct clip_vcc *clip_vcc)
775 	svc = ((clip_vcc == SEQ_NO_VCC_TOKEN) ||
776 	       (sk_atm(clip_vcc->vcc)->sk_family == AF_ATMSVC));
778 	llc = ((clip_vcc == SEQ_NO_VCC_TOKEN) || clip_vcc->encap);
780 	if (clip_vcc == SEQ_NO_VCC_TOKEN)
783 		exp = clip_vcc->last_use;
796 	if (clip_vcc == SEQ_NO_VCC_TOKEN) {
804 			   clip_vcc->vcc->dev->number,
805 			   clip_vcc->vcc->vpi, clip_vcc->vcc->vci);
807 		svc_addr(seq, &clip_vcc->vcc->remote);
817 	struct clip_vcc *vcc;
820 static struct clip_vcc *clip_seq_next_vcc(struct atmarp_entry *e,
821 					  struct clip_vcc *curr)
840 	struct clip_vcc *vcc = state->vcc;
883 		struct clip_vcc *vcc = state->vcc;