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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/net/atm/raw.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/net/atm/raw.c')
-rw-r--r--kernel/net/atm/raw.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/kernel/net/atm/raw.c b/kernel/net/atm/raw.c
new file mode 100644
index 000000000..2e17e97a7
--- /dev/null
+++ b/kernel/net/atm/raw.c
@@ -0,0 +1,85 @@
+/* net/atm/raw.c - Raw AAL0 and AAL5 transports */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
+
+#include <linux/module.h>
+#include <linux/atmdev.h>
+#include <linux/capability.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+
+#include "common.h"
+#include "protocols.h"
+
+/*
+ * 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);
+ }
+}
+
+static void atm_pop_raw(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+ struct sock *sk = sk_atm(vcc);
+
+ pr_debug("(%d) %d -= %d\n",
+ vcc->vci, sk_wmem_alloc_get(sk), 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);