Skip to content

L
linux
Commit 5c0fbae1 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files
Options

Merge hera.kernel.org:/home/acme/BK/x25-2.5.old 

into hera.kernel.org:/home/acme/BK/x25-2.5
parents 536ce362 004ffedc
Expand all Show whitespace changes
Inline Side-by-side
Showing with 1777 additions and 1393 deletions
drivers/net/wan/lapbether.c
View file @ 5c0fbae1
This diff is collapsed.
include/linux/x25.h
View file @ 5c0fbae1
......@@ -39,16 +39,16 @@
* An X.121 address, it is held as ASCII text, null terminated, up to 15
* digits and a null terminator.
*/
typedef struct {
struct x25_address {
char x25_addr[16];
} x25_address;
};
/*
* Linux X.25 Address structure, used for bind, and connect mostly.
*/
struct sockaddr_x25 {
sa_family_t sx25_family; /* Must be AF_X25 */
x25_address sx25_addr; /* X.121 Address */
struct x25_address sx25_addr; /* X.121 Address */
};
/*
......@@ -78,7 +78,7 @@ struct x25_subscrip_struct {
* Routing table control structure.
*/
struct x25_route_struct {
x25_address address;
struct x25_address address;
unsigned int sigdigits;
char device[200];
};
......
include/net/lapb.h
View file @ 5c0fbae1
......@@ -78,8 +78,8 @@ struct lapb_frame {
/*
* The per LAPB connection control structure.
*/
typedef struct lapb_cb {
struct lapb_cb *next;
struct lapb_cb {
struct list_head node;
void *token;
/* Link status fields */
......@@ -100,43 +100,45 @@ typedef struct lapb_cb {
/* FRMR control information */
struct lapb_frame frmr_data;
unsigned char frmr_type;
} lapb_cb;
atomic_t refcnt;
};
/* lapb_iface.c */
extern void lapb_connect_confirmation(lapb_cb *, int);
extern void lapb_connect_indication(lapb_cb *, int);
extern void lapb_disconnect_confirmation(lapb_cb *, int);
extern void lapb_disconnect_indication(lapb_cb *, int);
extern int lapb_data_indication(lapb_cb *, struct sk_buff *);
extern int lapb_data_transmit(lapb_cb *, struct sk_buff *);
extern void lapb_connect_confirmation(struct lapb_cb *lapb, int);
extern void lapb_connect_indication(struct lapb_cb *lapb, int);
extern void lapb_disconnect_confirmation(struct lapb_cb *lapb, int);
extern void lapb_disconnect_indication(struct lapb_cb *lapb, int);
extern int lapb_data_indication(struct lapb_cb *lapb, struct sk_buff *);
extern int lapb_data_transmit(struct lapb_cb *lapb, struct sk_buff *);
/* lapb_in.c */
extern void lapb_data_input(lapb_cb *, struct sk_buff *);
extern void lapb_data_input(struct lapb_cb *lapb, struct sk_buff *);
/* lapb_out.c */
extern void lapb_kick(lapb_cb *);
extern void lapb_transmit_buffer(lapb_cb *, struct sk_buff *, int);
extern void lapb_establish_data_link(lapb_cb *);
extern void lapb_enquiry_response(lapb_cb *);
extern void lapb_timeout_response(lapb_cb *);
extern void lapb_check_iframes_acked(lapb_cb *, unsigned short);
extern void lapb_check_need_response(lapb_cb *, int, int);
extern void lapb_kick(struct lapb_cb *lapb);
extern void lapb_transmit_buffer(struct lapb_cb *lapb, struct sk_buff *, int);
extern void lapb_establish_data_link(struct lapb_cb *lapb);
extern void lapb_enquiry_response(struct lapb_cb *lapb);
extern void lapb_timeout_response(struct lapb_cb *lapb);
extern void lapb_check_iframes_acked(struct lapb_cb *lapb, unsigned short);
extern void lapb_check_need_response(struct lapb_cb *lapb, int, int);
/* lapb_subr.c */
extern void lapb_clear_queues(lapb_cb *);
extern void lapb_frames_acked(lapb_cb *, unsigned short);
extern void lapb_requeue_frames(lapb_cb *);
extern int lapb_validate_nr(lapb_cb *, unsigned short);
extern void lapb_decode(lapb_cb *, struct sk_buff *, struct lapb_frame *);
extern void lapb_send_control(lapb_cb *, int, int, int);
extern void lapb_transmit_frmr(lapb_cb *);
extern void lapb_clear_queues(struct lapb_cb *lapb);
extern void lapb_frames_acked(struct lapb_cb *lapb, unsigned short);
extern void lapb_requeue_frames(struct lapb_cb *lapb);
extern int lapb_validate_nr(struct lapb_cb *lapb, unsigned short);
extern void lapb_decode(struct lapb_cb *lapb, struct sk_buff *, struct lapb_frame *);
extern void lapb_send_control(struct lapb_cb *lapb, int, int, int);
extern void lapb_transmit_frmr(struct lapb_cb *lapb);
/* lapb_timer.c */
extern void lapb_start_t1timer(lapb_cb *);
extern void lapb_start_t2timer(lapb_cb *);
extern void lapb_stop_t1timer(lapb_cb *);
extern void lapb_stop_t2timer(lapb_cb *);
extern int lapb_t1timer_running(lapb_cb *);
extern void lapb_start_t1timer(struct lapb_cb *lapb);
extern void lapb_start_t2timer(struct lapb_cb *lapb);
extern void lapb_stop_t1timer(struct lapb_cb *lapb);
extern void lapb_stop_t2timer(struct lapb_cb *lapb);
extern int lapb_t1timer_running(struct lapb_cb *lapb);
/*
* Debug levels.
......
include/net/x25.h
View file @ 5c0fbae1
......@@ -101,15 +101,24 @@ enum {
#define X25_MAX_FAC_LEN 20 /* Plenty to spare */
#define X25_MAX_CUD_LEN 128
/**
* struct x25_route - x25 routing entry
* @node - entry in x25_list_lock
* @address - Start of address range
* @sigdigits - Number of sig digits
* @dev - More than one for MLP
* @refcnt - reference counter
*/
struct x25_route {
struct x25_route *next;
x25_address address; /* Start of address range */
unsigned int sigdigits; /* Number of sig digits */
struct net_device *dev; /* More than one for MLP */
struct list_head node;
struct x25_address address;
unsigned int sigdigits;
struct net_device *dev;
atomic_t refcnt;
};
struct x25_neigh {
struct x25_neigh *next;
struct list_head node;
struct net_device *dev;
unsigned int state;
unsigned int extended;
......@@ -117,10 +126,11 @@ struct x25_neigh {
unsigned long t20;
struct timer_list t20timer;
unsigned long global_facil_mask;
atomic_t refcnt;
};
typedef struct {
x25_address source_addr, dest_addr;
struct x25_opt {
struct x25_address source_addr, dest_addr;
struct x25_neigh *neighbour;
unsigned int lci;
unsigned char state, condition, qbitincl, intflag;
......@@ -137,9 +147,9 @@ typedef struct {
struct x25_facilities facilities;
struct x25_calluserdata calluserdata;
unsigned long vc_facil_mask; /* inc_call facilities mask */
} x25_cb;
};
#define x25_sk(__sk) ((x25_cb *)(__sk)->protinfo)
#define x25_sk(__sk) ((struct x25_opt *)(__sk)->protinfo)
/* af_x25.c */
extern int sysctl_x25_restart_request_timeout;
......@@ -148,8 +158,10 @@ extern int sysctl_x25_reset_request_timeout;
extern int sysctl_x25_clear_request_timeout;
extern int sysctl_x25_ack_holdback_timeout;
extern int x25_addr_ntoa(unsigned char *, x25_address *, x25_address *);
extern int x25_addr_aton(unsigned char *, x25_address *, x25_address *);
extern int x25_addr_ntoa(unsigned char *, struct x25_address *,
struct x25_address *);
extern int x25_addr_aton(unsigned char *, struct x25_address *,
struct x25_address *);
extern unsigned int x25_new_lci(struct x25_neigh *);
extern struct sock *x25_find_socket(unsigned int, struct x25_neigh *);
extern void x25_destroy_socket(struct sock *);
......@@ -188,19 +200,42 @@ extern int x25_subscr_ioctl(unsigned int, void *);
extern struct x25_neigh *x25_get_neigh(struct net_device *);
extern void x25_link_free(void);
/* x25_neigh.c */
static __inline__ void x25_neigh_hold(struct x25_neigh *nb)
{
atomic_inc(&nb->refcnt);
}
static __inline__ void x25_neigh_put(struct x25_neigh *nb)
{
if (atomic_dec_and_test(&nb->refcnt))
kfree(nb);
}
/* x25_out.c */
extern int x25_output(struct sock *, struct sk_buff *);
extern void x25_kick(struct sock *);
extern void x25_enquiry_response(struct sock *);
/* x25_route.c */
extern struct net_device *x25_get_route(x25_address *);
extern struct x25_route *x25_get_route(struct x25_address *addr);
extern struct net_device *x25_dev_get(char *);
extern void x25_route_device_down(struct net_device *);
extern int x25_route_ioctl(unsigned int, void *);
extern int x25_routes_get_info(char *, char **, off_t, int);
extern void x25_route_free(void);
static __inline__ void x25_route_hold(struct x25_route *rt)
{
atomic_inc(&rt->refcnt);
}
static __inline__ void x25_route_put(struct x25_route *rt)
{
if (atomic_dec_and_test(&rt->refcnt))
kfree(rt);
}
/* x25_subr.c */
extern void x25_clear_queues(struct sock *);
extern void x25_frames_acked(struct sock *, unsigned short);
......
net/lapb/lapb_iface.c
View file @ 5c0fbae1
This diff is collapsed.
net/lapb/lapb_in.c
View file @ 5c0fbae1
This diff is collapsed.
net/lapb/lapb_out.c
View file @ 5c0fbae1
......@@ -38,50 +38,48 @@
* This procedure is passed a buffer descriptor for an iframe. It builds
* the rest of the control part of the frame and then writes it out.
*/
static void lapb_send_iframe(lapb_cb *lapb, struct sk_buff *skb, int poll_bit)
static void lapb_send_iframe(struct lapb_cb *lapb, struct sk_buff *skb, int poll_bit)
{
unsigned char *frame;
if (skb == NULL)
if (!skb)
return;
if (lapb->mode & LAPB_EXTENDED) {
frame = skb_push(skb, 2);
frame[0] = LAPB_I;
frame[0] |= (lapb->vs << 1);
frame[1] = (poll_bit) ? LAPB_EPF : 0;
frame[1] |= (lapb->vr << 1);
frame[0] |= lapb->vs << 1;
frame[1] = poll_bit ? LAPB_EPF : 0;
frame[1] |= lapb->vr << 1;
} else {
frame = skb_push(skb, 1);
*frame = LAPB_I;
*frame |= (poll_bit) ? LAPB_SPF : 0;
*frame |= (lapb->vr << 5);
*frame |= (lapb->vs << 1);
*frame |= poll_bit ? LAPB_SPF : 0;
*frame |= lapb->vr << 5;
*frame |= lapb->vs << 1;
}
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S%d TX I(%d) S%d R%d\n", lapb->token, lapb->state, poll_bit, lapb->vs, lapb->vr);
printk(KERN_DEBUG "lapb: (%p) S%d TX I(%d) S%d R%d\n",
lapb->token, lapb->state, poll_bit, lapb->vs, lapb->vr);
#endif
lapb_transmit_buffer(lapb, skb, LAPB_COMMAND);
}
void lapb_kick(lapb_cb *lapb)
void lapb_kick(struct lapb_cb *lapb)
{
struct sk_buff *skb, *skbn;
unsigned short modulus, start, end;
modulus = (lapb->mode & LAPB_EXTENDED) ? LAPB_EMODULUS : LAPB_SMODULUS;
start = (skb_peek(&lapb->ack_queue) == NULL) ? lapb->va : lapb->vs;
start = !skb_peek(&lapb->ack_queue) ? lapb->va : lapb->vs;
end = (lapb->va + lapb->window) % modulus;
if (!(lapb->condition & LAPB_PEER_RX_BUSY_CONDITION) &&
start != end &&
skb_peek(&lapb->write_queue) != NULL) {
start != end && skb_peek(&lapb->write_queue)) {
lapb->vs = start;
/*
......@@ -95,7 +93,7 @@ void lapb_kick(lapb_cb *lapb)
break;
}
if (skb->sk != NULL)
if (skb->sk)
skb_set_owner_w(skbn, skb->sk);
/*
......@@ -119,7 +117,7 @@ void lapb_kick(lapb_cb *lapb)
}
}
void lapb_transmit_buffer(lapb_cb *lapb, struct sk_buff *skb, int type)
void lapb_transmit_buffer(struct lapb_cb *lapb, struct sk_buff *skb, int type)
{
unsigned char *ptr;
......@@ -152,26 +150,30 @@ void lapb_transmit_buffer(lapb_cb *lapb, struct sk_buff *skb, int type)
}
#if LAPB_DEBUG > 2
printk(KERN_DEBUG "lapb: (%p) S%d TX %02X %02X %02X\n", lapb->token, lapb->state, skb->data[0], skb->data[1], skb->data[2]);
printk(KERN_DEBUG "lapb: (%p) S%d TX %02X %02X %02X\n",
lapb->token, lapb->state,
skb->data[0], skb->data[1], skb->data[2]);
#endif
if (!lapb_data_transmit(lapb, skb))
kfree_skb(skb);
}
void lapb_establish_data_link(lapb_cb *lapb)
void lapb_establish_data_link(struct lapb_cb *lapb)
{
lapb->condition = 0x00;
lapb->n2count = 0;
if (lapb->mode & LAPB_EXTENDED) {
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S%d TX SABME(1)\n", lapb->token, lapb->state);
printk(KERN_DEBUG "lapb: (%p) S%d TX SABME(1)\n",
lapb->token, lapb->state);
#endif
lapb_send_control(lapb, LAPB_SABME, LAPB_POLLON, LAPB_COMMAND);
} else {
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S%d TX SABM(1)\n", lapb->token, lapb->state);
printk(KERN_DEBUG "lapb: (%p) S%d TX SABM(1)\n",
lapb->token, lapb->state);
#endif
lapb_send_control(lapb, LAPB_SABM, LAPB_POLLON, LAPB_COMMAND);
}
......@@ -180,10 +182,11 @@ void lapb_establish_data_link(lapb_cb *lapb)
lapb_stop_t2timer(lapb);
}
void lapb_enquiry_response(lapb_cb *lapb)
void lapb_enquiry_response(struct lapb_cb *lapb)
{
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S%d TX RR(1) R%d\n", lapb->token, lapb->state, lapb->vr);
printk(KERN_DEBUG "lapb: (%p) S%d TX RR(1) R%d\n",
lapb->token, lapb->state, lapb->vr);
#endif
lapb_send_control(lapb, LAPB_RR, LAPB_POLLON, LAPB_RESPONSE);
......@@ -191,32 +194,30 @@ void lapb_enquiry_response(lapb_cb *lapb)
lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
}
void lapb_timeout_response(lapb_cb *lapb)
void lapb_timeout_response(struct lapb_cb *lapb)
{
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S%d TX RR(0) R%d\n", lapb->token, lapb->state, lapb->vr);
printk(KERN_DEBUG "lapb: (%p) S%d TX RR(0) R%d\n",
lapb->token, lapb->state, lapb->vr);
#endif
lapb_send_control(lapb, LAPB_RR, LAPB_POLLOFF, LAPB_RESPONSE);
lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
}
void lapb_check_iframes_acked(lapb_cb *lapb, unsigned short nr)
void lapb_check_iframes_acked(struct lapb_cb *lapb, unsigned short nr)
{
if (lapb->vs == nr) {
lapb_frames_acked(lapb, nr);
lapb_stop_t1timer(lapb);
lapb->n2count = 0;
} else {
if (lapb->va != nr) {
} else if (lapb->va != nr) {
lapb_frames_acked(lapb, nr);
lapb_start_t1timer(lapb);
}
}
}
void lapb_check_need_response(lapb_cb *lapb, int type, int pf)
void lapb_check_need_response(struct lapb_cb *lapb, int type, int pf)
{
if (type == LAPB_COMMAND && pf)
lapb_enquiry_response(lapb);
......
net/lapb/lapb_subr.c
View file @ 5c0fbae1
......@@ -36,7 +36,7 @@
/*
* This routine purges all the queues of frames.
*/
void lapb_clear_queues(lapb_cb *lapb)
void lapb_clear_queues(struct lapb_cb *lapb)
{
skb_queue_purge(&lapb->write_queue);
skb_queue_purge(&lapb->ack_queue);
......@@ -47,7 +47,7 @@ void lapb_clear_queues(lapb_cb *lapb)
* acknowledged. This replaces the boxes labelled "V(a) <- N(r)" on the
* SDL diagram.
*/
void lapb_frames_acked(lapb_cb *lapb, unsigned short nr)
void lapb_frames_acked(struct lapb_cb *lapb, unsigned short nr)
{
struct sk_buff *skb;
int modulus;
......@@ -57,16 +57,15 @@ void lapb_frames_acked(lapb_cb *lapb, unsigned short nr)
/*
* Remove all the ack-ed frames from the ack queue.
*/
if (lapb->va != nr) {
while (skb_peek(&lapb->ack_queue) != NULL && lapb->va != nr) {
if (lapb->va != nr)
while (skb_peek(&lapb->ack_queue) && lapb->va != nr) {
skb = skb_dequeue(&lapb->ack_queue);
kfree_skb(skb);
lapb->va = (lapb->va + 1) % modulus;
}
}
}
void lapb_requeue_frames(lapb_cb *lapb)
void lapb_requeue_frames(struct lapb_cb *lapb)
{
struct sk_buff *skb, *skb_prev = NULL;
......@@ -76,7 +75,7 @@ void lapb_requeue_frames(lapb_cb *lapb)
* possibility of an empty output queue.
*/
while ((skb = skb_dequeue(&lapb->ack_queue)) != NULL) {
if (skb_prev == NULL)
if (!skb_prev)
skb_queue_head(&lapb->write_queue, skb);
else
skb_append(skb_prev, skb);
......@@ -88,7 +87,7 @@ void lapb_requeue_frames(lapb_cb *lapb)
* Validate that the value of nr is between va and vs. Return true or
* false for testing.
*/
int lapb_validate_nr(lapb_cb *lapb, unsigned short nr)
int lapb_validate_nr(struct lapb_cb *lapb, unsigned short nr)
{
unsigned short vc = lapb->va;
int modulus;
......@@ -96,25 +95,27 @@ int lapb_validate_nr(lapb_cb *lapb, unsigned short nr)
modulus = (lapb->mode & LAPB_EXTENDED) ? LAPB_EMODULUS : LAPB_SMODULUS;
while (vc != lapb->vs) {
if (nr == vc) return 1;
if (nr == vc)
return 1;
vc = (vc + 1) % modulus;
}
if (nr == lapb->vs) return 1;
return 0;
return nr == lapb->vs;
}
/*
* This routine is the centralised routine for parsing the control
* information for the different frame formats.
*/
void lapb_decode(lapb_cb *lapb, struct sk_buff *skb, struct lapb_frame *frame)
void lapb_decode(struct lapb_cb *lapb, struct sk_buff *skb,
struct lapb_frame *frame)
{
frame->type = LAPB_ILLEGAL;
#if LAPB_DEBUG > 2
printk(KERN_DEBUG "lapb: (%p) S%d RX %02X %02X %02X\n", lapb->token, lapb->state, skb->data[0], skb->data[1], skb->data[2]);
printk(KERN_DEBUG "lapb: (%p) S%d RX %02X %02X %02X\n",
lapb->token, lapb->state,
skb->data[0], skb->data[1], skb->data[2]);
#endif
if (lapb->mode & LAPB_MLP) {
......@@ -146,22 +147,31 @@ void lapb_decode(lapb_cb *lapb, struct sk_buff *skb, struct lapb_frame *frame)
skb_pull(skb, 1);
if (lapb->mode & LAPB_EXTENDED) {
if ((skb->data[0] & LAPB_S) == 0) {
frame->type = LAPB_I; /* I frame - carries NR/NS/PF */
if (!(skb->data[0] & LAPB_S)) {
/*
* I frame - carries NR/NS/PF
*/
frame->type = LAPB_I;
frame->ns = (skb->data[0] >> 1) & 0x7F;
frame->nr = (skb->data[1] >> 1) & 0x7F;
frame->pf = skb->data[1] & LAPB_EPF;
frame->control[0] = skb->data[0];
frame->control[1] = skb->data[1];
skb_pull(skb, 2);
} else if ((skb->data[0] & LAPB_U) == 1) { /* S frame - take out PF/NR */
} else if ((skb->data[0] & LAPB_U) == 1) {
/*
* S frame - take out PF/NR
*/
frame->type = skb->data[0] & 0x0F;
frame->nr = (skb->data[1] >> 1) & 0x7F;
frame->pf = skb->data[1] & LAPB_EPF;
frame->control[0] = skb->data[0];
frame->control[1] = skb->data[1];
skb_pull(skb, 2);
} else if ((skb->data[0] & LAPB_U) == 3) { /* U frame - take out PF */
} else if ((skb->data[0] & LAPB_U) == 3) {
/*
* U frame - take out PF
*/
frame->type = skb->data[0] & ~LAPB_SPF;
frame->pf = skb->data[0] & LAPB_SPF;
frame->control[0] = skb->data[0];
......@@ -169,16 +179,25 @@ void lapb_decode(lapb_cb *lapb, struct sk_buff *skb, struct lapb_frame *frame)
skb_pull(skb, 1);
}
} else {
if ((skb->data[0] & LAPB_S) == 0) {
frame->type = LAPB_I; /* I frame - carries NR/NS/PF */
if (!(skb->data[0] & LAPB_S)) {
/*
* I frame - carries NR/NS/PF
*/
frame->type = LAPB_I;
frame->ns = (skb->data[0] >> 1) & 0x07;
frame->nr = (skb->data[0] >> 5) & 0x07;
frame->pf = skb->data[0] & LAPB_SPF;
} else if ((skb->data[0] & LAPB_U) == 1) { /* S frame - take out PF/NR */
} else if ((skb->data[0] & LAPB_U) == 1) {
/*
* S frame - take out PF/NR
*/
frame->type = skb->data[0] & 0x0F;
frame->nr = (skb->data[0] >> 5) & 0x07;
frame->pf = skb->data[0] & LAPB_SPF;
} else if ((skb->data[0] & LAPB_U) == 3) { /* U frame - take out PF */
} else if ((skb->data[0] & LAPB_U) == 3) {
/*
* U frame - take out PF
*/
frame->type = skb->data[0] & ~LAPB_SPF;
frame->pf = skb->data[0] & LAPB_SPF;
}
......@@ -195,7 +214,8 @@ void lapb_decode(lapb_cb *lapb, struct sk_buff *skb, struct lapb_frame *frame)
* Only supervisory or unnumbered frames are processed, FRMRs are handled
* by lapb_transmit_frmr below.
*/
void lapb_send_control(lapb_cb *lapb, int frametype, int poll_bit, int type)
void lapb_send_control(struct lapb_cb *lapb, int frametype,
int poll_bit, int type)
{
struct sk_buff *skb;
unsigned char *dptr;
......@@ -209,17 +229,17 @@ void lapb_send_control(lapb_cb *lapb, int frametype, int poll_bit, int type)
if ((frametype & LAPB_U) == LAPB_U) {
dptr = skb_put(skb, 1);
*dptr = frametype;
*dptr |= (poll_bit) ? LAPB_SPF : 0;
*dptr |= poll_bit ? LAPB_SPF : 0;
} else {
dptr = skb_put(skb, 2);
dptr[0] = frametype;
dptr[1] = (lapb->vr << 1);
dptr[1] |= (poll_bit) ? LAPB_EPF : 0;
dptr[1] |= poll_bit ? LAPB_EPF : 0;
}
} else {
dptr = skb_put(skb, 1);
*dptr = frametype;
*dptr |= (poll_bit) ? LAPB_SPF : 0;
*dptr |= poll_bit ? LAPB_SPF : 0;
if ((frametype & LAPB_U) == LAPB_S) /* S frames carry NR */
*dptr |= (lapb->vr << 5);
}
......@@ -231,7 +251,7 @@ void lapb_send_control(lapb_cb *lapb, int frametype, int poll_bit, int type)
* This routine generates FRMRs based on information previously stored in
* the LAPB control block.
*/
void lapb_transmit_frmr(lapb_cb *lapb)
void lapb_transmit_frmr(struct lapb_cb *lapb)
{
struct sk_buff *skb;
unsigned char *dptr;
......@@ -254,7 +274,10 @@ void lapb_transmit_frmr(lapb_cb *lapb)
*dptr++ = lapb->frmr_type;
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S%d TX FRMR %02X %02X %02X %02X %02X\n", lapb->token, lapb->state, skb->data[1], skb->data[2], skb->data[3], skb->data[4], skb->data[5]);
printk(KERN_DEBUG "lapb: (%p) S%d TX FRMR %02X %02X %02X %02X %02X\n",
lapb->token, lapb->state,
skb->data[1], skb->data[2], skb->data[3],
skb->data[4], skb->data[5]);
#endif
} else {
dptr = skb_put(skb, 4);
......@@ -268,7 +291,9 @@ void lapb_transmit_frmr(lapb_cb *lapb)
*dptr++ = lapb->frmr_type;
#if LAPB_DEBUG > 1
printk(KERN_DEBUG "lapb: (%p) S%d TX FRMR %02X %02X %02X\n", lapb->token, lapb->state, skb->data[1], skb->data[2], skb->data[3]);
printk(KERN_DEBUG "lapb: (%p) S%d TX FRMR %02X %02X %02X\n",
lapb->token, lapb->state, skb->data[1],
skb->data[2], skb->data[3]);
#endif
}
......
net/lapb/lapb_timer.c
View file @ 5c0fbae1
......@@ -37,7 +37,7 @@
static void lapb_t1timer_expiry(unsigned long);
static void lapb_t2timer_expiry(unsigned long);
void lapb_start_t1timer(lapb_cb *lapb)
void lapb_start_t1timer(struct lapb_cb *lapb)
{
del_timer(&lapb->t1timer);
......@@ -48,7 +48,7 @@ void lapb_start_t1timer(lapb_cb *lapb)
add_timer(&lapb->t1timer);
}
void lapb_start_t2timer(lapb_cb *lapb)
void lapb_start_t2timer(struct lapb_cb *lapb)
{
del_timer(&lapb->t2timer);
......@@ -59,24 +59,24 @@ void lapb_start_t2timer(lapb_cb *lapb)
add_timer(&lapb->t2timer);
}
void lapb_stop_t1timer(lapb_cb *lapb)
void lapb_stop_t1timer(struct lapb_cb *lapb)
{
del_timer(&lapb->t1timer);
}
void lapb_stop_t2timer(lapb_cb *lapb)
void lapb_stop_t2timer(struct lapb_cb *lapb)
{
del_timer(&lapb->t2timer);
}
int lapb_t1timer_running(lapb_cb *lapb)
int lapb_t1timer_running(struct lapb_cb *lapb)
{
return timer_pending(&lapb->t1timer);
}
static void lapb_t2timer_expiry(unsigned long param)
{
lapb_cb *lapb = (lapb_cb *)param;
struct lapb_cb *lapb = (struct lapb_cb *)param;
if (lapb->condition & LAPB_ACK_PENDING_CONDITION) {
lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
......@@ -86,7 +86,7 @@ static void lapb_t2timer_expiry(unsigned long param)
static void lapb_t1timer_expiry(unsigned long param)
{
lapb_cb *lapb = (lapb_cb *)param;
struct lapb_cb *lapb = (struct lapb_cb *)param;
switch (lapb->state) {
......
net/x25/af_x25.c
View file @ 5c0fbae1
This diff is collapsed.
net/x25/sysctl_net_x25.c
View file @ 5c0fbae1
......@@ -13,38 +13,88 @@
#include <linux/init.h>
#include <net/x25.h>
static int min_timer[] = {1 * HZ};
static int max_timer[] = {300 * HZ};
static int min_timer[] = { 1 * HZ };
static int max_timer[] = { 300 * HZ };
static struct ctl_table_header *x25_table_header;
static ctl_table x25_table[] = {
{NET_X25_RESTART_REQUEST_TIMEOUT, "restart_request_timeout",
&sysctl_x25_restart_request_timeout, sizeof(int), 0644, NULL,
&proc_dointvec_minmax, &sysctl_intvec, NULL, &min_timer, &max_timer},
{NET_X25_CALL_REQUEST_TIMEOUT, "call_request_timeout",
&sysctl_x25_call_request_timeout, sizeof(int), 0644, NULL,
&proc_dointvec_minmax, &sysctl_intvec, NULL, &min_timer, &max_timer},
{NET_X25_RESET_REQUEST_TIMEOUT, "reset_request_timeout",
&sysctl_x25_reset_request_timeout, sizeof(int), 0644, NULL,
&proc_dointvec_minmax, &sysctl_intvec, NULL, &min_timer, &max_timer},
{NET_X25_CLEAR_REQUEST_TIMEOUT, "clear_request_timeout",
&sysctl_x25_clear_request_timeout, sizeof(int), 0644, NULL,
&proc_dointvec_minmax, &sysctl_intvec, NULL, &min_timer, &max_timer},
{NET_X25_ACK_HOLD_BACK_TIMEOUT, "acknowledgement_hold_back_timeout",
&sysctl_x25_ack_holdback_timeout, sizeof(int), 0644, NULL,
&proc_dointvec_minmax, &sysctl_intvec, NULL, &min_timer, &max_timer},
{0}
static struct ctl_table x25_table[] = {
{
.ctl_name = NET_X25_RESTART_REQUEST_TIMEOUT,
.procname = "restart_request_timeout",
.data = &sysctl_x25_restart_request_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &min_timer,
.extra2 = &max_timer,
},
{
.ctl_name = NET_X25_CALL_REQUEST_TIMEOUT,
.procname = "call_request_timeout",
.data = &sysctl_x25_call_request_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &min_timer,
.extra2 = &max_timer,
},
{
.ctl_name = NET_X25_RESET_REQUEST_TIMEOUT,
.procname = "reset_request_timeout",
.data = &sysctl_x25_reset_request_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &min_timer,
.extra2 = &max_timer,
},
{
.ctl_name = NET_X25_CLEAR_REQUEST_TIMEOUT,
.procname = "clear_request_timeout",
.data = &sysctl_x25_clear_request_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &min_timer,
.extra2 = &max_timer,
},
{
.ctl_name = NET_X25_ACK_HOLD_BACK_TIMEOUT,
.procname = "acknowledgement_hold_back_timeout",
.data = &sysctl_x25_ack_holdback_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &min_timer,
.extra2 = &max_timer,
},
{ 0, },
};
static ctl_table x25_dir_table[] = {
{NET_X25, "x25", NULL, 0, 0555, x25_table},
{0}
static struct ctl_table x25_dir_table[] = {
{
.ctl_name = NET_X25,
.procname = "x25",
.mode = 0555,
.child = x25_table,
},
{ 0, },
};
static ctl_table x25_root_table[] = {
{CTL_NET, "net", NULL, 0, 0555, x25_dir_table},
{0}
static struct ctl_table x25_root_table[] = {
{
.ctl_name = CTL_NET,
.procname = "net",
.mode = 0555,
.child = x25_dir_table,
},
{ 0, },
};
void __init x25_register_sysctl(void)
......
net/x25/x25_dev.c
View file @ 5c0fbae1
......@@ -44,7 +44,7 @@
#include <linux/if_arp.h>
#include <net/x25.h>
static int x25_receive_data(struct sk_buff *skb, struct x25_neigh *neigh)
static int x25_receive_data(struct sk_buff *skb, struct x25_neigh *nb)
{
struct sock *sk;
unsigned short frametype;
......@@ -58,14 +58,14 @@ static int x25_receive_data(struct sk_buff *skb, struct x25_neigh *neigh)
* frame.
*/
if (lci == 0) {
x25_link_control(skb, neigh, frametype);
x25_link_control(skb, nb, frametype);
return 0;
}
/*
* Find an existing socket.
*/
if ((sk = x25_find_socket(lci, neigh)) != NULL) {
if ((sk = x25_find_socket(lci, nb)) != NULL) {
int queued = 1;
skb->h.raw = skb->data;
......@@ -83,91 +83,87 @@ static int x25_receive_data(struct sk_buff *skb, struct x25_neigh *neigh)
* Is is a Call Request ? if so process it.
*/
if (frametype == X25_CALL_REQUEST)
return x25_rx_call_request(skb, neigh, lci);
return x25_rx_call_request(skb, nb, lci);
/*
* Its not a Call Request, nor is it a control frame.
* Let caller throw it away.
*/
/*
x25_transmit_clear_request(neigh, lci, 0x0D);
x25_transmit_clear_request(nb, lci, 0x0D);
*/
printk(KERN_DEBUG "x25_receive_data(): unknown frame type %2x\n",frametype);
return 0;
}
int x25_lapb_receive_frame(struct sk_buff *skb, struct net_device *dev, struct packet_type *ptype)
int x25_lapb_receive_frame(struct sk_buff *skb, struct net_device *dev,
struct packet_type *ptype)
{
struct x25_neigh *neigh;
int queued;
struct x25_neigh *nb;
skb->sk = NULL;
/*
* Packet received from unrecognised device, throw it away.
*/
if ((neigh = x25_get_neigh(dev)) == NULL) {
nb = x25_get_neigh(dev);
if (!nb) {
printk(KERN_DEBUG "X.25: unknown neighbour - %s\n", dev->name);
kfree_skb(skb);
return 0;
goto drop;
}
switch (skb->data[0]) {
case 0x00:
skb_pull(skb, 1);
queued = x25_receive_data(skb, neigh);
if( ! queued )
/* We need to free the skb ourselves because
* net_bh() won't care about our return code.
*/
kfree_skb(skb);
return 0;
if (x25_receive_data(skb, nb)) {
x25_neigh_put(nb);
goto out;
}
break;
case 0x01:
x25_link_established(neigh);
kfree_skb(skb);
return 0;
x25_link_established(nb);
break;
case 0x02:
x25_link_terminated(neigh);
kfree_skb(skb);
return 0;
case 0x03:
kfree_skb(skb);
return 0;
default:
x25_link_terminated(nb);
break;
}
x25_neigh_put(nb);
drop:
kfree_skb(skb);
out:
return 0;
}
}
int x25_llc_receive_frame(struct sk_buff *skb, struct net_device *dev, struct packet_type *ptype)
int x25_llc_receive_frame(struct sk_buff *skb, struct net_device *dev,
struct packet_type *ptype)
{
struct x25_neigh *neigh;
struct x25_neigh *nb;
int rc = 0;
skb->sk = NULL;
/*
* Packet received from unrecognised device, throw it away.
*/
if ((neigh = x25_get_neigh(dev)) == NULL) {
nb = x25_get_neigh(dev);
if (!nb) {
printk(KERN_DEBUG "X.25: unknown_neighbour - %s\n", dev->name);
kfree_skb(skb);
return 0;
} else {
rc = x25_receive_data(skb, nb);
x25_neigh_put(nb);
}
return x25_receive_data(skb, neigh);
return rc;
}
void x25_establish_link(struct x25_neigh *neigh)
void x25_establish_link(struct x25_neigh *nb)
{
struct sk_buff *skb;
unsigned char *ptr;
switch (neigh->dev->type) {
switch (nb->dev->type) {
case ARPHRD_X25:
if ((skb = alloc_skb(1, GFP_ATOMIC)) == NULL) {
printk(KERN_ERR "x25_dev: out of memory\n");
......@@ -186,47 +182,44 @@ void x25_establish_link(struct x25_neigh *neigh)
}
skb->protocol = htons(ETH_P_X25);
skb->dev = neigh->dev;
skb->dev = nb->dev;
dev_queue_xmit(skb);
}
void x25_terminate_link(struct x25_neigh *neigh)
void x25_terminate_link(struct x25_neigh *nb)
{
struct sk_buff *skb;
unsigned char *ptr;
switch (neigh->dev->type) {
case ARPHRD_X25:
if ((skb = alloc_skb(1, GFP_ATOMIC)) == NULL) {
printk(KERN_ERR "x25_dev: out of memory\n");
return;
}
ptr = skb_put(skb, 1);
*ptr = 0x02;
break;
#if defined(CONFIG_LLC) || defined(CONFIG_LLC_MODULE)
case ARPHRD_ETHER:
if (nb->dev->type == ARPHRD_ETHER)
return;
#endif
default:
if (nb->dev->type != ARPHRD_X25)
return;
skb = alloc_skb(1, GFP_ATOMIC);
if (!skb) {
printk(KERN_ERR "x25_dev: out of memory\n");
return;
}
skb->protocol = htons(ETH_P_X25);
skb->dev = neigh->dev;
ptr = skb_put(skb, 1);
*ptr = 0x02;
skb->protocol = htons(ETH_P_X25);
skb->dev = nb->dev;
dev_queue_xmit(skb);
}
void x25_send_frame(struct sk_buff *skb, struct x25_neigh *neigh)
void x25_send_frame(struct sk_buff *skb, struct x25_neigh *nb)
{
unsigned char *dptr;
skb->nh.raw = skb->data;
switch (neigh->dev->type) {
switch (nb->dev->type) {
case ARPHRD_X25:
dptr = skb_push(skb, 1);
*dptr = 0x00;
......@@ -243,7 +236,7 @@ void x25_send_frame(struct sk_buff *skb, struct x25_neigh *neigh)
}
skb->protocol = htons(ETH_P_X25);
skb->dev = neigh->dev;
skb->dev = nb->dev;
dev_queue_xmit(skb);
}
net/x25/x25_facilities.c
View file @ 5c0fbae1
/*
* X.25 Packet Layer release 002
*
* This is ALPHA test software. This code may break your machine, randomly fail to work with new
* releases, misbehave and/or generally screw up. It might even work.
* This is ALPHA test software. This code may break your machine,
* randomly fail to work with new releases, misbehave and/or generally
* screw up. It might even work.
*
* This code REQUIRES 2.1.15 or higher
*
......@@ -42,12 +43,13 @@
* Parse a set of facilities into the facilities structure. Unrecognised
* facilities are written to the debug log file.
*/
int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities, unsigned long *vc_fac_mask)
int x25_parse_facilities(struct sk_buff *skb,
struct x25_facilities *facilities,
unsigned long *vc_fac_mask)
{
unsigned int len;
unsigned char *p = skb->data;
unsigned int len = *p++;
len = *p++;
*vc_fac_mask = 0;
while (len > 0) {
......@@ -55,7 +57,7 @@ int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities,
case X25_FAC_CLASS_A:
switch (*p) {
case X25_FAC_REVERSE:
facilities->reverse = (p[1] & 0x01);
facilities->reverse = p[1] & 0x01;
*vc_fac_mask |= X25_MASK_REVERSE;
break;
case X25_FAC_THROUGHPUT:
......@@ -63,13 +65,14 @@ int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities,
*vc_fac_mask |= X25_MASK_THROUGHPUT;
break;
default:
printk(KERN_DEBUG "X.25: unknown facility %02X, value %02X\n", p[0], p[1]);
printk(KERN_DEBUG "X.25: unknown facility "
"%02X, value %02X\n",
p[0], p[1]);
break;
}
p += 2;
len -= 2;
break;
case X25_FAC_CLASS_B:
switch (*p) {
case X25_FAC_PACKET_SIZE:
......@@ -83,21 +86,25 @@ int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities,
*vc_fac_mask |= X25_MASK_WINDOW_SIZE;
break;
default:
printk(KERN_DEBUG "X.25: unknown facility %02X, values %02X, %02X\n", p[0], p[1], p[2]);
printk(KERN_DEBUG "X.25: unknown facility "
"%02X, values %02X, %02X\n",
p[0], p[1], p[2]);
break;
}
p += 3;
len -= 3;
break;
case X25_FAC_CLASS_C:
printk(KERN_DEBUG "X.25: unknown facility %02X, values %02X, %02X, %02X\n", p[0], p[1], p[2], p[3]);
printk(KERN_DEBUG "X.25: unknown facility %02X, "
"values %02X, %02X, %02X\n",
p[0], p[1], p[2], p[3]);
p += 4;
len -= 4;
break;
case X25_FAC_CLASS_D:
printk(KERN_DEBUG "X.25: unknown facility %02X, length %d, values %02X, %02X, %02X, %02X\n", p[0], p[1], p[2], p[3], p[4], p[5]);
printk(KERN_DEBUG "X.25: unknown facility %02X, "
"length %d, values %02X, %02X, %02X, %02X\n",
p[0], p[1], p[2], p[3], p[4], p[5]);
p += p[1] + 2;
len -= p[1] + 2;
break;
......@@ -110,37 +117,45 @@ int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities,
/*
* Create a set of facilities.
*/
int x25_create_facilities(unsigned char *buffer, struct x25_facilities *facilities, unsigned long facil_mask)
int x25_create_facilities(unsigned char *buffer,
struct x25_facilities *facilities,
unsigned long facil_mask)
{
unsigned char *p = buffer + 1;
int len;
if (facil_mask == 0) {
buffer [0] = 0; /* length of the facilities field in call_req or call_accept packets */
if (!facil_mask) {
/*
* Length of the facilities field in call_req or
* call_accept packets
*/
buffer[0] = 0;
len = 1; /* 1 byte for the length field */
return len;
}
if ((facilities->reverse != 0) && (facil_mask & X25_MASK_REVERSE)) {
if (facilities->reverse && (facil_mask & X25_MASK_REVERSE)) {
*p++ = X25_FAC_REVERSE;
*p++ = (facilities->reverse) ? 0x01 : 0x00;
*p++ = !!facilities->reverse;
}
if ((facilities->throughput != 0) && (facil_mask & X25_MASK_THROUGHPUT)) {
if (facilities->throughput && (facil_mask & X25_MASK_THROUGHPUT)) {
*p++ = X25_FAC_THROUGHPUT;
*p++ = facilities->throughput;
}
if ((facilities->pacsize_in != 0 || facilities->pacsize_out != 0) && (facil_mask & X25_MASK_PACKET_SIZE)) {
if ((facilities->pacsize_in || facilities->pacsize_out) &&
(facil_mask & X25_MASK_PACKET_SIZE)) {
*p++ = X25_FAC_PACKET_SIZE;
*p++ = (facilities->pacsize_in == 0) ? facilities->pacsize_out : facilities->pacsize_in;
*p++ = (facilities->pacsize_out == 0) ? facilities->pacsize_in : facilities->pacsize_out;
*p++ = facilities->pacsize_in ? : facilities->pacsize_out;
*p++ = facilities->pacsize_out ? : facilities->pacsize_in;
}
if ((facilities->winsize_in != 0 || facilities->winsize_out != 0) && (facil_mask & X25_MASK_WINDOW_SIZE)) {
if ((facilities->winsize_in || facilities->winsize_out) &&
(facil_mask & X25_MASK_WINDOW_SIZE)) {
*p++ = X25_FAC_WINDOW_SIZE;
*p++ = (facilities->winsize_in == 0) ? facilities->winsize_out : facilities->winsize_in;
*p++ = (facilities->winsize_out == 0) ? facilities->winsize_in : facilities->winsize_out;
*p++ = facilities->winsize_in ? : facilities->winsize_out;
*p++ = facilities->winsize_out ? : facilities->winsize_in;
}
len = p - buffer;
......@@ -154,39 +169,37 @@ int x25_create_facilities(unsigned char *buffer, struct x25_facilities *faciliti
*
* The only real problem is with reverse charging.
*/
int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk, struct x25_facilities *new)
int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk,
struct x25_facilities *new)
{
x25_cb *x25 = x25_sk(sk);
struct x25_facilities *ours;
struct x25_opt *x25 = x25_sk(sk);
struct x25_facilities *ours = &x25->facilities;
struct x25_facilities theirs;
int len;
memset(&theirs, 0x00, sizeof(struct x25_facilities));
ours = &x25->facilities;
*new = *ours;
memset(&theirs, 0, sizeof(theirs));
memcpy(new, ours, sizeof(*new));
len = x25_parse_facilities(skb, &theirs, &x25->vc_facil_mask);
/*
* They want reverse charging, we won't accept it.
*/
if (theirs.reverse != 0 && ours->reverse == 0) {
if (theirs.reverse && ours->reverse) {
SOCK_DEBUG(sk, "X.25: rejecting reverse charging request");
return -1;
}
new->reverse = theirs.reverse;
if (theirs.throughput != 0) {
if (theirs.throughput) {
if (theirs.throughput < ours->throughput) {
SOCK_DEBUG(sk, "X.25: throughput negotiated down");
new->throughput = theirs.throughput;
}
}
if (theirs.pacsize_in != 0 && theirs.pacsize_out != 0) {
if (theirs.pacsize_in && theirs.pacsize_out) {
if (theirs.pacsize_in < ours->pacsize_in) {
SOCK_DEBUG(sk, "X.25: packet size inwards negotiated down");
new->pacsize_in = theirs.pacsize_in;
......@@ -197,7 +210,7 @@ int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk, struct x25_fa
}
}
if (theirs.winsize_in != 0 && theirs.winsize_out != 0) {
if (theirs.winsize_in && theirs.winsize_out) {
if (theirs.winsize_in < ours->winsize_in) {
SOCK_DEBUG(sk, "X.25: window size inwards negotiated down");
new->winsize_in = theirs.winsize_in;
......@@ -216,15 +229,15 @@ int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk, struct x25_fa
* currently attached x25 link.
*/
void x25_limit_facilities(struct x25_facilities *facilities,
struct x25_neigh *neighbour)
struct x25_neigh *nb)
{
if( ! neighbour->extended ){
if( facilities->winsize_in > 7 ){
if (!nb->extended) {
if (facilities->winsize_in > 7) {
printk(KERN_DEBUG "X.25: incoming winsize limited to 7\n");
facilities->winsize_in = 7;
}
if( facilities->winsize_out > 7 ){
if (facilities->winsize_out > 7) {
facilities->winsize_out = 7;
printk( KERN_DEBUG "X.25: outgoing winsize limited to 7\n");
}
......
net/x25/x25_in.c
View file @ 5c0fbae1
/*
* X.25 Packet Layer release 002
*
* This is ALPHA test software. This code may break your machine, randomly fail to work with new
* releases, misbehave and/or generally screw up. It might even work.
* This is ALPHA test software. This code may break your machine,
* randomly fail to work with new releases, misbehave and/or generally
* screw up. It might even work.
*
* This code REQUIRES 2.1.15 or higher
*
......@@ -47,7 +48,7 @@
static int x25_queue_rx_frame(struct sock *sk, struct sk_buff *skb, int more)
{
struct sk_buff *skbo, *skbn = skb;
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
if (more) {
x25->fraglen += skb->len;
......@@ -86,7 +87,7 @@ static int x25_queue_rx_frame(struct sock *sk, struct sk_buff *skb, int more)
skb_set_owner_r(skbn, sk);
skb_queue_tail(&sk->receive_queue, skbn);
if (!sk->dead)
sk->data_ready(sk,skbn->len);
sk->data_ready(sk, skbn->len);
return 0;
}
......@@ -98,11 +99,11 @@ static int x25_queue_rx_frame(struct sock *sk, struct sk_buff *skb, int more)
*/
static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametype)
{
x25_address source_addr, dest_addr;
struct x25_address source_addr, dest_addr;
switch (frametype) {
case X25_CALL_ACCEPTED: {
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
x25_stop_timer(sk);
x25->condition = 0x00;
......@@ -178,7 +179,7 @@ static int x25_state3_machine(struct sock *sk, struct sk_buff *skb, int frametyp
{
int queued = 0;
int modulus;
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
modulus = (x25->neighbour->extended) ? X25_EMODULUS : X25_SMODULUS;
......@@ -307,7 +308,7 @@ static int x25_state4_machine(struct sock *sk, struct sk_buff *skb, int frametyp
case X25_RESET_REQUEST:
x25_write_internal(sk, X25_RESET_CONFIRMATION);
case X25_RESET_CONFIRMATION: {
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
x25_stop_timer(sk);
x25->condition = 0x00;
......@@ -334,7 +335,7 @@ static int x25_state4_machine(struct sock *sk, struct sk_buff *skb, int frametyp
/* Higher level upcall for a LAPB frame */
int x25_process_rx_frame(struct sock *sk, struct sk_buff *skb)
{
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
int queued = 0, frametype, ns, nr, q, d, m;
if (x25->state == X25_STATE_0)
......@@ -364,10 +365,10 @@ int x25_process_rx_frame(struct sock *sk, struct sk_buff *skb)
int x25_backlog_rcv(struct sock *sk, struct sk_buff *skb)
{
int queued;
int queued = x25_process_rx_frame(sk, skb);
queued = x25_process_rx_frame(sk,skb);
if(!queued) kfree_skb(skb);
if (!queued)
kfree_skb(skb);
return 0;
}
net/x25/x25_link.c
View file @ 5c0fbae1
This diff is collapsed.
net/x25/x25_out.c
View file @ 5c0fbae1
/*
* X.25 Packet Layer release 002
*
* This is ALPHA test software. This code may break your machine, randomly fail to work with new
* releases, misbehave and/or generally screw up. It might even work.
* This is ALPHA test software. This code may break your machine,
* randomly fail to work with new releases, misbehave and/or generally
* screw up. It might even work.
*
* This code REQUIRES 2.1.15 or higher
*
......@@ -45,7 +46,7 @@ static int x25_pacsize_to_bytes(unsigned int pacsize)
{
int bytes = 1;
if (pacsize == 0)
if (!pacsize)
return 128;
while (pacsize-- > 0)
......@@ -66,7 +67,7 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
unsigned char header[X25_EXT_MIN_LEN];
int err, frontlen, len;
int sent=0, noblock = X25_SKB_CB(skb)->flags & MSG_DONTWAIT;
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
int header_len = x25->neighbour->extended ? X25_EXT_MIN_LEN :
X25_STD_MIN_LEN;
int max_len = x25_pacsize_to_bytes(x25->facilities.pacsize_out);
......@@ -79,18 +80,21 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
frontlen = skb_headroom(skb);
while (skb->len > 0) {
if ((skbn = sock_alloc_send_skb(sk, frontlen + max_len, noblock, &err)) == NULL){
if(err == -EWOULDBLOCK && noblock){
if ((skbn = sock_alloc_send_skb(sk, frontlen + max_len,
noblock, &err)) == NULL){
if (err == -EWOULDBLOCK && noblock){
kfree_skb(skb);
return sent;
}
SOCK_DEBUG(sk, "x25_output: fragment allocation failed, err=%d, %d bytes sent\n", err, sent);
SOCK_DEBUG(sk, "x25_output: fragment alloc"
" failed, err=%d, %d bytes "
"sent\n", err, sent);
return err;
}
skb_reserve(skbn, frontlen);
len = (max_len > skb->len) ? skb->len : max_len;
len = max_len > skb->len ? skb->len : max_len;
/* Copy the user data */
memcpy(skb_put(skbn, len), skb->data, len);
......@@ -125,9 +129,9 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
*/
static void x25_send_iframe(struct sock *sk, struct sk_buff *skb)
{
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
if (skb == NULL)
if (!skb)
return;
if (x25->neighbour->extended) {
......@@ -148,7 +152,7 @@ void x25_kick(struct sock *sk)
struct sk_buff *skb, *skbn;
unsigned short start, end;
int modulus;
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
if (x25->state != X25_STATE_3)
return;
......@@ -168,9 +172,9 @@ void x25_kick(struct sock *sk)
if (skb_peek(&sk->write_queue) == NULL)
return;
modulus = (x25->neighbour->extended) ? X25_EMODULUS : X25_SMODULUS;
modulus = x25->neighbour->extended ? X25_EMODULUS : X25_SMODULUS;
start = (skb_peek(&x25->ack_queue) == NULL) ? x25->va : x25->vs;
start = skb_peek(&x25->ack_queue) ? x25->vs : x25->va;
end = (x25->va + x25->facilities.winsize_out) % modulus;
if (start == end)
......@@ -220,7 +224,7 @@ void x25_kick(struct sock *sk)
void x25_enquiry_response(struct sock *sk)
{
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
if (x25->condition & X25_COND_OWN_RX_BUSY)
x25_write_internal(sk, X25_RNR);
......
net/x25/x25_route.c
View file @ 5c0fbae1
This diff is collapsed.
net/x25/x25_subr.c
View file @ 5c0fbae1
/*
* X.25 Packet Layer release 002
*
* This is ALPHA test software. This code may break your machine, randomly fail to work with new
* releases, misbehave and/or generally screw up. It might even work.
* This is ALPHA test software. This code may break your machine,
* randomly fail to work with new releases, misbehave and/or generally
* screw up. It might even work.
*
* This code REQUIRES 2.1.15 or higher
*
......@@ -46,7 +47,7 @@
*/
void x25_clear_queues(struct sock *sk)
{
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
skb_queue_purge(&sk->write_queue);
skb_queue_purge(&x25->ack_queue);
......@@ -64,7 +65,7 @@ void x25_clear_queues(struct sock *sk)
void x25_frames_acked(struct sock *sk, unsigned short nr)
{
struct sk_buff *skb;
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
int modulus = x25->neighbour->extended ? X25_EMODULUS : X25_SMODULUS;
/*
......@@ -88,7 +89,7 @@ void x25_requeue_frames(struct sock *sk)
* output queue.
*/
while ((skb = skb_dequeue(&x25_sk(sk)->ack_queue)) != NULL) {
if (skb_prev == NULL)
if (!skb_prev)
skb_queue_head(&sk->write_queue, skb);
else
skb_append(skb_prev, skb);
......@@ -102,12 +103,13 @@ void x25_requeue_frames(struct sock *sk)
*/
int x25_validate_nr(struct sock *sk, unsigned short nr)
{
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
unsigned short vc = x25->va;
int modulus = x25->neighbour->extended ? X25_EMODULUS : X25_SMODULUS;
while (vc != x25->vs) {
if (nr == vc) return 1;
if (nr == vc)
return 1;
vc = (vc + 1) % modulus;
}
......@@ -120,18 +122,16 @@ int x25_validate_nr(struct sock *sk, unsigned short nr)
*/
void x25_write_internal(struct sock *sk, int frametype)
{
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
struct sk_buff *skb;
unsigned char *dptr;
unsigned char facilities[X25_MAX_FAC_LEN];
unsigned char addresses[1 + X25_ADDR_LEN];
unsigned char lci1, lci2;
int len;
/*
* Default safe frame size.
*/
len = X25_MAX_L2_LEN + X25_EXT_MIN_LEN;
int len = X25_MAX_L2_LEN + X25_EXT_MIN_LEN;
/*
* Adjust frame size.
......@@ -262,7 +262,7 @@ void x25_write_internal(struct sock *sk, int frametype)
int x25_decode(struct sock *sk, struct sk_buff *skb, int *ns, int *nr, int *q,
int *d, int *m)
{
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
unsigned char *frame = skb->data;
*ns = *nr = *q = *d = *m = 0;
......@@ -329,7 +329,7 @@ int x25_decode(struct sock *sk, struct sk_buff *skb, int *ns, int *nr, int *q,
void x25_disconnect(struct sock *sk, int reason, unsigned char cause,
unsigned char diagnostic)
{
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
x25_clear_queues(sk);
x25_stop_timer(sk);
......@@ -356,7 +356,7 @@ void x25_disconnect(struct sock *sk, int reason, unsigned char cause,
*/
void x25_check_rbuf(struct sock *sk)
{
x25_cb *x25 = x25_sk(sk);
struct x25_opt *x25 = x25_sk(sk);
if (atomic_read(&sk->rmem_alloc) < (sk->rcvbuf / 2) &&
(x25->condition & X25_COND_OWN_RX_BUSY)) {
......
net/x25/x25_timer.c
View file @ 5c0fbae1
This diff is collapsed.
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7