diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/net/atm/raw.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (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.c | 85 |
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); |