diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/atm/raw.c |
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.c | 98 |
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 @@ | |||
1 | /* net/atm/raw.c - Raw AAL0 and AAL5 transports */ | ||
2 | |||
3 | /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ | ||
4 | |||
5 | |||
6 | #include <linux/module.h> | ||
7 | #include <linux/sched.h> | ||
8 | #include <linux/atmdev.h> | ||
9 | #include <linux/kernel.h> | ||
10 | #include <linux/skbuff.h> | ||
11 | #include <linux/mm.h> | ||
12 | |||
13 | #include "common.h" | ||
14 | #include "protocols.h" | ||
15 | |||
16 | |||
17 | #if 0 | ||
18 | #define DPRINTK(format,args...) printk(KERN_DEBUG format,##args) | ||
19 | #else | ||
20 | #define DPRINTK(format,args...) | ||
21 | #endif | ||
22 | |||
23 | |||
24 | /* | ||
25 | * SKB == NULL indicates that the link is being closed | ||
26 | */ | ||
27 | |||
28 | static void atm_push_raw(struct atm_vcc *vcc,struct sk_buff *skb) | ||
29 | { | ||
30 | if (skb) { | ||
31 | struct sock *sk = sk_atm(vcc); | ||
32 | |||
33 | skb_queue_tail(&sk->sk_receive_queue, skb); | ||
34 | sk->sk_data_ready(sk, skb->len); | ||
35 | } | ||
36 | } | ||
37 | |||
38 | |||
39 | static void atm_pop_raw(struct atm_vcc *vcc,struct sk_buff *skb) | ||
40 | { | ||
41 | struct sock *sk = sk_atm(vcc); | ||
42 | |||
43 | DPRINTK("APopR (%d) %d -= %d\n", vcc->vci, sk->sk_wmem_alloc, | ||
44 | skb->truesize); | ||
45 | atomic_sub(skb->truesize, &sk->sk_wmem_alloc); | ||
46 | dev_kfree_skb_any(skb); | ||
47 | sk->sk_write_space(sk); | ||
48 | } | ||
49 | |||
50 | |||
51 | static int atm_send_aal0(struct atm_vcc *vcc,struct sk_buff *skb) | ||
52 | { | ||
53 | /* | ||
54 | * Note that if vpi/vci are _ANY or _UNSPEC the below will | ||
55 | * still work | ||
56 | */ | ||
57 | if (!capable(CAP_NET_ADMIN) && | ||
58 | (((u32 *) skb->data)[0] & (ATM_HDR_VPI_MASK | ATM_HDR_VCI_MASK)) != | ||
59 | ((vcc->vpi << ATM_HDR_VPI_SHIFT) | (vcc->vci << ATM_HDR_VCI_SHIFT))) | ||
60 | { | ||
61 | kfree_skb(skb); | ||
62 | return -EADDRNOTAVAIL; | ||
63 | } | ||
64 | return vcc->dev->ops->send(vcc,skb); | ||
65 | } | ||
66 | |||
67 | |||
68 | int atm_init_aal0(struct atm_vcc *vcc) | ||
69 | { | ||
70 | vcc->push = atm_push_raw; | ||
71 | vcc->pop = atm_pop_raw; | ||
72 | vcc->push_oam = NULL; | ||
73 | vcc->send = atm_send_aal0; | ||
74 | return 0; | ||
75 | } | ||
76 | |||
77 | |||
78 | int atm_init_aal34(struct atm_vcc *vcc) | ||
79 | { | ||
80 | vcc->push = atm_push_raw; | ||
81 | vcc->pop = atm_pop_raw; | ||
82 | vcc->push_oam = NULL; | ||
83 | vcc->send = vcc->dev->ops->send; | ||
84 | return 0; | ||
85 | } | ||
86 | |||
87 | |||
88 | int atm_init_aal5(struct atm_vcc *vcc) | ||
89 | { | ||
90 | vcc->push = atm_push_raw; | ||
91 | vcc->pop = atm_pop_raw; | ||
92 | vcc->push_oam = NULL; | ||
93 | vcc->send = vcc->dev->ops->send; | ||
94 | return 0; | ||
95 | } | ||
96 | |||
97 | |||
98 | EXPORT_SYMBOL(atm_init_aal5); | ||