1 // SPDX-License-Identifier: GPL-2.0 <<
2 /* net/atm/raw.c - Raw AAL0 and AAL5 transport 1 /* net/atm/raw.c - Raw AAL0 and AAL5 transports */
3 2
4 /* Written 1995-2000 by Werner Almesberger, EP 3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
5 4
6 #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt <<
7 5
8 #include <linux/module.h> 6 #include <linux/module.h>
>> 7 #include <linux/sched.h>
9 #include <linux/atmdev.h> 8 #include <linux/atmdev.h>
10 #include <linux/capability.h> <<
11 #include <linux/kernel.h> 9 #include <linux/kernel.h>
12 #include <linux/skbuff.h> 10 #include <linux/skbuff.h>
13 #include <linux/mm.h> 11 #include <linux/mm.h>
14 #include <linux/slab.h> <<
15 12
16 #include "common.h" 13 #include "common.h"
17 #include "protocols.h" 14 #include "protocols.h"
18 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
19 /* 24 /*
20 * SKB == NULL indicates that the link is bein 25 * SKB == NULL indicates that the link is being closed
21 */ 26 */
22 27
23 static void atm_push_raw(struct atm_vcc *vcc, !! 28 void atm_push_raw(struct atm_vcc *vcc,struct sk_buff *skb)
24 { 29 {
25 if (skb) { 30 if (skb) {
26 struct sock *sk = sk_atm(vcc); !! 31 skb_queue_tail(&vcc->sk->receive_queue,skb);
27 !! 32 wake_up(&vcc->sleep);
28 skb_queue_tail(&sk->sk_receive <<
29 sk->sk_data_ready(sk); <<
30 } 33 }
31 } 34 }
32 35
33 static void atm_pop_raw(struct atm_vcc *vcc, s <<
34 { <<
35 struct sock *sk = sk_atm(vcc); <<
36 36
37 pr_debug("(%d) %d -= %d\n", !! 37 static void atm_pop_raw(struct atm_vcc *vcc,struct sk_buff *skb)
38 vcc->vci, sk_wmem_alloc_get(s !! 38 {
39 WARN_ON(refcount_sub_and_test(ATM_SKB( !! 39 DPRINTK("APopR (%d) %d -= %d\n",vcc->vci,vcc->sk->wmem_alloc,skb->truesize);
>> 40 atomic_sub(skb->truesize, &vcc->sk->wmem_alloc);
40 dev_kfree_skb_any(skb); 41 dev_kfree_skb_any(skb);
41 sk->sk_write_space(sk); !! 42 wake_up(&vcc->sleep);
42 } 43 }
43 44
44 static int atm_send_aal0(struct atm_vcc *vcc, !! 45
>> 46 static int atm_send_aal0(struct atm_vcc *vcc,struct sk_buff *skb)
45 { 47 {
46 /* 48 /*
47 * Note that if vpi/vci are _ANY or _U 49 * Note that if vpi/vci are _ANY or _UNSPEC the below will
48 * still work 50 * still work
49 */ 51 */
50 if (!capable(CAP_NET_ADMIN) && 52 if (!capable(CAP_NET_ADMIN) &&
51 (((u32 *)skb->data)[0] & (ATM_HDR_ !! 53 (((u32 *) skb->data)[0] & (ATM_HDR_VPI_MASK | ATM_HDR_VCI_MASK)) !=
52 ((vcc->vpi << ATM_HDR_VPI_SHIFT) | !! 54 ((vcc->vpi << ATM_HDR_VPI_SHIFT) | (vcc->vci << ATM_HDR_VCI_SHIFT)))
53 (vcc->vci << ATM_HDR_VCI_SHIFT))) !! 55 {
54 kfree_skb(skb); 56 kfree_skb(skb);
55 return -EADDRNOTAVAIL; 57 return -EADDRNOTAVAIL;
56 } !! 58 }
57 if (vcc->dev->ops->send_bh) !! 59 return vcc->dev->ops->send(vcc,skb);
58 return vcc->dev->ops->send_bh( <<
59 return vcc->dev->ops->send(vcc, skb); <<
60 } 60 }
61 61
>> 62
62 int atm_init_aal0(struct atm_vcc *vcc) 63 int atm_init_aal0(struct atm_vcc *vcc)
63 { 64 {
64 vcc->push = atm_push_raw; 65 vcc->push = atm_push_raw;
65 vcc->pop = atm_pop_raw; 66 vcc->pop = atm_pop_raw;
66 vcc->push_oam = NULL; 67 vcc->push_oam = NULL;
67 vcc->send = atm_send_aal0; 68 vcc->send = atm_send_aal0;
68 return 0; 69 return 0;
69 } 70 }
70 71
>> 72
71 int atm_init_aal34(struct atm_vcc *vcc) 73 int atm_init_aal34(struct atm_vcc *vcc)
72 { 74 {
73 vcc->push = atm_push_raw; 75 vcc->push = atm_push_raw;
74 vcc->pop = atm_pop_raw; 76 vcc->pop = atm_pop_raw;
75 vcc->push_oam = NULL; 77 vcc->push_oam = NULL;
76 if (vcc->dev->ops->send_bh) !! 78 vcc->send = vcc->dev->ops->send;
77 vcc->send = vcc->dev->ops->sen <<
78 else <<
79 vcc->send = vcc->dev->ops->sen <<
80 return 0; 79 return 0;
81 } 80 }
82 81
>> 82
83 int atm_init_aal5(struct atm_vcc *vcc) 83 int atm_init_aal5(struct atm_vcc *vcc)
84 { 84 {
85 vcc->push = atm_push_raw; 85 vcc->push = atm_push_raw;
86 vcc->pop = atm_pop_raw; 86 vcc->pop = atm_pop_raw;
87 vcc->push_oam = NULL; 87 vcc->push_oam = NULL;
88 if (vcc->dev->ops->send_bh) !! 88 vcc->send = vcc->dev->ops->send;
89 vcc->send = vcc->dev->ops->sen <<
90 else <<
91 vcc->send = vcc->dev->ops->sen <<
92 return 0; 89 return 0;
93 } 90 }
>> 91
>> 92
94 EXPORT_SYMBOL(atm_init_aal5); 93 EXPORT_SYMBOL(atm_init_aal5);
95 94
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