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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/atm/raw.c
downloadlinux-stericsson-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'net/atm/raw.c')
-rw-r--r--net/atm/raw.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/net/atm/raw.c b/net/atm/raw.c
new file mode 100644
index 000000000000..4a0466e91aa6
--- /dev/null
+++ b/net/atm/raw.c
@@ -0,0 +1,98 @@
+/* net/atm/raw.c - Raw AAL0 and AAL5 transports */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/atmdev.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/mm.h>
+
+#include "common.h"
+#include "protocols.h"
+
+
+#if 0
+#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
+#else
+#define DPRINTK(format,args...)
+#endif
+
+
+/*
+ * SKB == NULL indicates that the link is being closed
+ */
+
+static void atm_push_raw(struct atm_vcc *vcc,struct sk_buff *skb)
+{
+ if (skb) {
+ struct sock *sk = sk_atm(vcc);
+
+ skb_queue_tail(&sk->sk_receive_queue, skb);
+ sk->sk_data_ready(sk, skb->len);
+ }
+}
+
+
+static void atm_pop_raw(struct atm_vcc *vcc,struct sk_buff *skb)
+{
+ struct sock *sk = sk_atm(vcc);
+
+ DPRINTK("APopR (%d) %d -= %d\n", vcc->vci, sk->sk_wmem_alloc,
+ skb->truesize);
+ atomic_sub(skb->truesize, &sk->sk_wmem_alloc);
+ dev_kfree_skb_any(skb);
+ sk->sk_write_space(sk);
+}
+
+
+static int atm_send_aal0(struct atm_vcc *vcc,struct sk_buff *skb)
+{
+ /*
+ * Note that if vpi/vci are _ANY or _UNSPEC the below will
+ * still work
+ */
+ if (!capable(CAP_NET_ADMIN) &&
+ (((u32 *) skb->data)[0] & (ATM_HDR_VPI_MASK | ATM_HDR_VCI_MASK)) !=
+ ((vcc->vpi << ATM_HDR_VPI_SHIFT) | (vcc->vci << ATM_HDR_VCI_SHIFT)))
+ {
+ kfree_skb(skb);
+ return -EADDRNOTAVAIL;
+ }
+ return vcc->dev->ops->send(vcc,skb);
+}
+
+
+int atm_init_aal0(struct atm_vcc *vcc)
+{
+ vcc->push = atm_push_raw;
+ vcc->pop = atm_pop_raw;
+ vcc->push_oam = NULL;
+ vcc->send = atm_send_aal0;
+ return 0;
+}
+
+
+int atm_init_aal34(struct atm_vcc *vcc)
+{
+ vcc->push = atm_push_raw;
+ vcc->pop = atm_pop_raw;
+ vcc->push_oam = NULL;
+ vcc->send = vcc->dev->ops->send;
+ return 0;
+}
+
+
+int atm_init_aal5(struct atm_vcc *vcc)
+{
+ vcc->push = atm_push_raw;
+ vcc->pop = atm_pop_raw;
+ vcc->push_oam = NULL;
+ vcc->send = vcc->dev->ops->send;
+ return 0;
+}
+
+
+EXPORT_SYMBOL(atm_init_aal5);