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path: root/drivers/staging/ozwpan/ozproto.c
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Diffstat (limited to 'drivers/staging/ozwpan/ozproto.c')
-rw-r--r--drivers/staging/ozwpan/ozproto.c526
1 files changed, 193 insertions, 333 deletions
diff --git a/drivers/staging/ozwpan/ozproto.c b/drivers/staging/ozwpan/ozproto.c
index 79ac7b51d5b2..88714ec85705 100644
--- a/drivers/staging/ozwpan/ozproto.c
+++ b/drivers/staging/ozwpan/ozproto.c
@@ -3,6 +3,7 @@
* Released under the GNU General Public License Version 2 (GPLv2).
* -----------------------------------------------------------------------------
*/
+
#include <linux/init.h>
#include <linux/module.h>
#include <linux/timer.h>
@@ -10,68 +11,45 @@
#include <linux/netdevice.h>
#include <linux/errno.h>
#include <linux/ieee80211.h>
-#include "ozconfig.h"
+#include "ozdbg.h"
#include "ozprotocol.h"
#include "ozeltbuf.h"
#include "ozpd.h"
#include "ozproto.h"
#include "ozusbsvc.h"
-#include "oztrace.h"
+
#include "ozappif.h"
#include <asm/unaligned.h>
#include <linux/uaccess.h>
#include <net/psnap.h>
-/*------------------------------------------------------------------------------
- */
+
#define OZ_CF_CONN_SUCCESS 1
#define OZ_CF_CONN_FAILURE 2
#define OZ_DO_STOP 1
#define OZ_DO_SLEEP 2
-/* States of the timer.
- */
-#define OZ_TIMER_IDLE 0
-#define OZ_TIMER_SET 1
-#define OZ_TIMER_IN_HANDLER 2
-
#define OZ_MAX_TIMER_POOL_SIZE 16
-/*------------------------------------------------------------------------------
- */
struct oz_binding {
struct packet_type ptype;
char name[OZ_MAX_BINDING_LEN];
- struct oz_binding *next;
-};
-
-struct oz_timer {
struct list_head link;
- struct oz_pd *pd;
- unsigned long due_time;
- int type;
};
-/*------------------------------------------------------------------------------
+
+/*
* Static external variables.
*/
static DEFINE_SPINLOCK(g_polling_lock);
static LIST_HEAD(g_pd_list);
-static struct oz_binding *g_binding ;
+static LIST_HEAD(g_binding);
static DEFINE_SPINLOCK(g_binding_lock);
static struct sk_buff_head g_rx_queue;
static u8 g_session_id;
static u16 g_apps = 0x1;
static int g_processing_rx;
-static struct timer_list g_timer;
-static struct oz_timer *g_cur_timer;
-static struct list_head *g_timer_pool;
-static int g_timer_pool_count;
-static int g_timer_state = OZ_TIMER_IDLE;
-static LIST_HEAD(g_timer_list);
-/*------------------------------------------------------------------------------
- */
-static void oz_protocol_timer_start(void);
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq-serialized
*/
static u8 oz_get_new_session_id(u8 exclude)
@@ -84,7 +62,8 @@ static u8 oz_get_new_session_id(u8 exclude)
}
return g_session_id;
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq-serialized
*/
static void oz_send_conn_rsp(struct oz_pd *pd, u8 status)
@@ -94,6 +73,7 @@ static void oz_send_conn_rsp(struct oz_pd *pd, u8 status)
struct oz_hdr *oz_hdr;
struct oz_elt *elt;
struct oz_elt_connect_rsp *body;
+
int sz = sizeof(struct oz_hdr) + sizeof(struct oz_elt) +
sizeof(struct oz_elt_connect_rsp);
skb = alloc_skb(sz + OZ_ALLOCATED_SPACE(dev), GFP_ATOMIC);
@@ -124,11 +104,12 @@ static void oz_send_conn_rsp(struct oz_pd *pd, u8 status)
body->session_id = pd->session_id;
put_unaligned(cpu_to_le16(pd->total_apps), &body->apps);
}
- oz_trace("TX: OZ_ELT_CONNECT_RSP %d", status);
+ oz_dbg(ON, "TX: OZ_ELT_CONNECT_RSP %d", status);
dev_queue_xmit(skb);
return;
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq-serialized
*/
static void pd_set_keepalive(struct oz_pd *pd, u8 kalive)
@@ -137,35 +118,41 @@ static void pd_set_keepalive(struct oz_pd *pd, u8 kalive)
switch (kalive & OZ_KALIVE_TYPE_MASK) {
case OZ_KALIVE_SPECIAL:
- pd->keep_alive_j =
- oz_ms_to_jiffies(keep_alive * 1000*60*60*24*20);
+ pd->keep_alive = keep_alive * 1000*60*60*24*20;
break;
case OZ_KALIVE_SECS:
- pd->keep_alive_j = oz_ms_to_jiffies(keep_alive*1000);
+ pd->keep_alive = keep_alive*1000;
break;
case OZ_KALIVE_MINS:
- pd->keep_alive_j = oz_ms_to_jiffies(keep_alive*1000*60);
+ pd->keep_alive = keep_alive*1000*60;
break;
case OZ_KALIVE_HOURS:
- pd->keep_alive_j = oz_ms_to_jiffies(keep_alive*1000*60*60);
+ pd->keep_alive = keep_alive*1000*60*60;
break;
default:
- pd->keep_alive_j = 0;
+ pd->keep_alive = 0;
}
- oz_trace("Keepalive = %lu jiffies\n", pd->keep_alive_j);
+ oz_dbg(ON, "Keepalive = %lu mSec\n", pd->keep_alive);
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq-serialized
*/
-static void pd_set_presleep(struct oz_pd *pd, u8 presleep)
+static void pd_set_presleep(struct oz_pd *pd, u8 presleep, u8 start_timer)
{
if (presleep)
- pd->presleep_j = oz_ms_to_jiffies(presleep*100);
+ pd->presleep = presleep*100;
else
- pd->presleep_j = OZ_PRESLEEP_TOUT_J;
- oz_trace("Presleep time = %lu jiffies\n", pd->presleep_j);
+ pd->presleep = OZ_PRESLEEP_TOUT;
+ if (start_timer) {
+ spin_unlock(&g_polling_lock);
+ oz_timer_add(pd, OZ_TIMER_TOUT, pd->presleep);
+ spin_lock(&g_polling_lock);
+ }
+ oz_dbg(ON, "Presleep time = %lu mSec\n", pd->presleep);
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq-serialized
*/
static struct oz_pd *oz_connect_req(struct oz_pd *cur_pd, struct oz_elt *elt,
@@ -179,6 +166,7 @@ static struct oz_pd *oz_connect_req(struct oz_pd *cur_pd, struct oz_elt *elt,
u16 new_apps = g_apps;
struct net_device *old_net_dev = NULL;
struct oz_pd *free_pd = NULL;
+
if (cur_pd) {
pd = cur_pd;
spin_lock_bh(&g_polling_lock);
@@ -188,7 +176,7 @@ static struct oz_pd *oz_connect_req(struct oz_pd *cur_pd, struct oz_elt *elt,
pd = oz_pd_alloc(pd_addr);
if (pd == NULL)
return NULL;
- pd->last_rx_time_j = jiffies;
+ getnstimeofday(&pd->last_rx_timestamp);
spin_lock_bh(&g_polling_lock);
list_for_each(e, &g_pd_list) {
pd2 = container_of(e, struct oz_pd, link);
@@ -210,7 +198,7 @@ static struct oz_pd *oz_connect_req(struct oz_pd *cur_pd, struct oz_elt *elt,
dev_hold(net_dev);
pd->net_dev = net_dev;
}
- oz_trace("Host vendor: %d\n", body->host_vendor);
+ oz_dbg(ON, "Host vendor: %d\n", body->host_vendor);
pd->max_tx_size = OZ_MAX_TX_SIZE;
pd->mode = body->mode;
pd->pd_info = body->pd_info;
@@ -234,12 +222,11 @@ static struct oz_pd *oz_connect_req(struct oz_pd *cur_pd, struct oz_elt *elt,
}
if (body->max_len_div16)
pd->max_tx_size = ((u16)body->max_len_div16)<<4;
- oz_trace("Max frame:%u Ms per isoc:%u\n",
- pd->max_tx_size, pd->ms_per_isoc);
+ oz_dbg(ON, "Max frame:%u Ms per isoc:%u\n",
+ pd->max_tx_size, pd->ms_per_isoc);
pd->max_stream_buffering = 3*1024;
- pd->timeout_time_j = jiffies + OZ_CONNECTION_TOUT_J;
- pd->pulse_period_j = OZ_QUANTUM_J;
- pd_set_presleep(pd, body->presleep);
+ pd->pulse_period = OZ_QUANTUM;
+ pd_set_presleep(pd, body->presleep, 0);
pd_set_keepalive(pd, body->keep_alive);
new_apps &= le16_to_cpu(get_unaligned(&body->apps));
@@ -271,9 +258,8 @@ done:
u16 resume_apps = new_apps & pd->paused_apps & ~0x1;
spin_unlock_bh(&g_polling_lock);
oz_pd_set_state(pd, OZ_PD_S_CONNECTED);
- oz_timer_delete(pd, OZ_TIMER_STOP);
- oz_trace("new_apps=0x%x total_apps=0x%x paused_apps=0x%x\n",
- new_apps, pd->total_apps, pd->paused_apps);
+ oz_dbg(ON, "new_apps=0x%x total_apps=0x%x paused_apps=0x%x\n",
+ new_apps, pd->total_apps, pd->paused_apps);
if (start_apps) {
if (oz_services_start(pd, start_apps, 0))
rsp_status = OZ_STATUS_TOO_MANY_PDS;
@@ -300,7 +286,8 @@ done:
oz_pd_destroy(free_pd);
return pd;
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq-serialized
*/
static void oz_add_farewell(struct oz_pd *pd, u8 ep_num, u8 index,
@@ -309,13 +296,15 @@ static void oz_add_farewell(struct oz_pd *pd, u8 ep_num, u8 index,
struct oz_farewell *f;
struct oz_farewell *f2;
int found = 0;
- f = kmalloc(sizeof(struct oz_farewell) + len - 1, GFP_ATOMIC);
+
+ f = kmalloc(sizeof(struct oz_farewell) + len, GFP_ATOMIC);
if (!f)
return;
f->ep_num = ep_num;
f->index = index;
+ f->len = len;
memcpy(f->report, report, len);
- oz_trace("RX: Adding farewell report\n");
+ oz_dbg(ON, "RX: Adding farewell report\n");
spin_lock(&g_polling_lock);
list_for_each_entry(f2, &pd->farewell_list, link) {
if ((f2->ep_num == ep_num) && (f2->index == index)) {
@@ -329,7 +318,8 @@ static void oz_add_farewell(struct oz_pd *pd, u8 ep_num, u8 index,
if (found)
kfree(f2);
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq-serialized
*/
static void oz_rx_frame(struct sk_buff *skb)
@@ -340,20 +330,20 @@ static void oz_rx_frame(struct sk_buff *skb)
int length;
struct oz_pd *pd = NULL;
struct oz_hdr *oz_hdr = (struct oz_hdr *)skb_network_header(skb);
+ struct timespec current_time;
int dup = 0;
u32 pkt_num;
- oz_trace2(OZ_TRACE_RX_FRAMES,
- "RX frame PN=0x%x LPN=0x%x control=0x%x\n",
- oz_hdr->pkt_num, oz_hdr->last_pkt_num, oz_hdr->control);
+ oz_dbg(RX_FRAMES, "RX frame PN=0x%x LPN=0x%x control=0x%x\n",
+ oz_hdr->pkt_num, oz_hdr->last_pkt_num, oz_hdr->control);
mac_hdr = skb_mac_header(skb);
src_addr = &mac_hdr[ETH_ALEN] ;
length = skb->len;
/* Check the version field */
if (oz_get_prot_ver(oz_hdr->control) != OZ_PROTOCOL_VERSION) {
- oz_trace("Incorrect protocol version: %d\n",
- oz_get_prot_ver(oz_hdr->control));
+ oz_dbg(ON, "Incorrect protocol version: %d\n",
+ oz_get_prot_ver(oz_hdr->control));
goto done;
}
@@ -361,19 +351,24 @@ static void oz_rx_frame(struct sk_buff *skb)
pd = oz_pd_find(src_addr);
if (pd) {
- pd->last_rx_time_j = jiffies;
- oz_timer_add(pd, OZ_TIMER_TOUT,
- pd->last_rx_time_j + pd->presleep_j, 1);
+ if (!(pd->state & OZ_PD_S_CONNECTED))
+ oz_pd_set_state(pd, OZ_PD_S_CONNECTED);
+ getnstimeofday(&current_time);
+ if ((current_time.tv_sec != pd->last_rx_timestamp.tv_sec) ||
+ (pd->presleep < MSEC_PER_SEC)) {
+ oz_timer_add(pd, OZ_TIMER_TOUT, pd->presleep);
+ pd->last_rx_timestamp = current_time;
+ }
if (pkt_num != pd->last_rx_pkt_num) {
pd->last_rx_pkt_num = pkt_num;
} else {
dup = 1;
- oz_trace("Duplicate frame\n");
+ oz_dbg(ON, "Duplicate frame\n");
}
}
if (pd && !dup && ((pd->mode & OZ_MODE_MASK) == OZ_MODE_TRIGGERED)) {
- oz_trace2(OZ_TRACE_RX_FRAMES, "Received TRIGGER Frame\n");
+ oz_dbg(RX_FRAMES, "Received TRIGGER Frame\n");
pd->last_sent_frame = &pd->tx_queue;
if (oz_hdr->control & OZ_F_ACK) {
/* Retire completed frames */
@@ -397,22 +392,22 @@ static void oz_rx_frame(struct sk_buff *skb)
break;
switch (elt->type) {
case OZ_ELT_CONNECT_REQ:
- oz_trace("RX: OZ_ELT_CONNECT_REQ\n");
+ oz_dbg(ON, "RX: OZ_ELT_CONNECT_REQ\n");
pd = oz_connect_req(pd, elt, src_addr, skb->dev);
break;
case OZ_ELT_DISCONNECT:
- oz_trace("RX: OZ_ELT_DISCONNECT\n");
+ oz_dbg(ON, "RX: OZ_ELT_DISCONNECT\n");
if (pd)
oz_pd_sleep(pd);
break;
case OZ_ELT_UPDATE_PARAM_REQ: {
struct oz_elt_update_param *body =
(struct oz_elt_update_param *)(elt + 1);
- oz_trace("RX: OZ_ELT_UPDATE_PARAM_REQ\n");
+ oz_dbg(ON, "RX: OZ_ELT_UPDATE_PARAM_REQ\n");
if (pd && (pd->state & OZ_PD_S_CONNECTED)) {
spin_lock(&g_polling_lock);
pd_set_keepalive(pd, body->keepalive);
- pd_set_presleep(pd, body->presleep);
+ pd_set_presleep(pd, body->presleep, 1);
spin_unlock(&g_polling_lock);
}
}
@@ -420,7 +415,7 @@ static void oz_rx_frame(struct sk_buff *skb)
case OZ_ELT_FAREWELL_REQ: {
struct oz_elt_farewell *body =
(struct oz_elt_farewell *)(elt + 1);
- oz_trace("RX: OZ_ELT_FAREWELL_REQ\n");
+ oz_dbg(ON, "RX: OZ_ELT_FAREWELL_REQ\n");
oz_add_farewell(pd, body->ep_num,
body->index, body->report,
elt->length + 1 - sizeof(*body));
@@ -436,7 +431,7 @@ static void oz_rx_frame(struct sk_buff *skb)
}
break;
default:
- oz_trace("RX: Unknown elt %02x\n", elt->type);
+ oz_dbg(ON, "RX: Unknown elt %02x\n", elt->type);
}
elt = oz_next_elt(elt);
}
@@ -445,19 +440,19 @@ done:
oz_pd_put(pd);
consume_skb(skb);
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: process
*/
void oz_protocol_term(void)
{
- struct list_head *chain;
- del_timer_sync(&g_timer);
+ struct oz_binding *b, *t;
+
/* Walk the list of bindings and remove each one.
*/
spin_lock_bh(&g_binding_lock);
- while (g_binding) {
- struct oz_binding *b = g_binding;
- g_binding = b->next;
+ list_for_each_entry_safe(b, t, &g_binding, link) {
+ list_del(&b->link);
spin_unlock_bh(&g_binding_lock);
dev_remove_pack(&b->ptype);
if (b->ptype.dev)
@@ -480,21 +475,38 @@ void oz_protocol_term(void)
oz_pd_put(pd);
spin_lock_bh(&g_polling_lock);
}
- chain = g_timer_pool;
- g_timer_pool = NULL;
spin_unlock_bh(&g_polling_lock);
- while (chain) {
- struct oz_timer *t = container_of(chain, struct oz_timer, link);
- chain = chain->next;
- kfree(t);
- }
- oz_trace("Protocol stopped\n");
+ oz_dbg(ON, "Protocol stopped\n");
+}
+
+/*
+ * Context: softirq
+ */
+void oz_pd_heartbeat_handler(unsigned long data)
+{
+ struct oz_pd *pd = (struct oz_pd *)data;
+ u16 apps = 0;
+
+ spin_lock_bh(&g_polling_lock);
+ if (pd->state & OZ_PD_S_CONNECTED)
+ apps = pd->total_apps;
+ spin_unlock_bh(&g_polling_lock);
+ if (apps)
+ oz_pd_heartbeat(pd, apps);
+ oz_pd_put(pd);
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq
*/
-static void oz_pd_handle_timer(struct oz_pd *pd, int type)
+void oz_pd_timeout_handler(unsigned long data)
{
+ int type;
+ struct oz_pd *pd = (struct oz_pd *)data;
+
+ spin_lock_bh(&g_polling_lock);
+ type = pd->timeout_type;
+ spin_unlock_bh(&g_polling_lock);
switch (type) {
case OZ_TIMER_TOUT:
oz_pd_sleep(pd);
@@ -502,226 +514,86 @@ static void oz_pd_handle_timer(struct oz_pd *pd, int type)
case OZ_TIMER_STOP:
oz_pd_stop(pd);
break;
- case OZ_TIMER_HEARTBEAT: {
- u16 apps = 0;
- spin_lock_bh(&g_polling_lock);
- pd->heartbeat_requested = 0;
- if (pd->state & OZ_PD_S_CONNECTED)
- apps = pd->total_apps;
- spin_unlock_bh(&g_polling_lock);
- if (apps)
- oz_pd_heartbeat(pd, apps);
- }
- break;
}
+ oz_pd_put(pd);
}
-/*------------------------------------------------------------------------------
- * Context: softirq
+
+/*
+ * Context: Interrupt
*/
-static void oz_protocol_timer(unsigned long arg)
+enum hrtimer_restart oz_pd_heartbeat_event(struct hrtimer *timer)
{
- struct oz_timer *t;
- struct oz_timer *t2;
struct oz_pd *pd;
- spin_lock_bh(&g_polling_lock);
- if (!g_cur_timer) {
- /* This happens if we remove the current timer but can't stop
- * the timer from firing. In this case just get out.
- */
- spin_unlock_bh(&g_polling_lock);
- return;
- }
- g_timer_state = OZ_TIMER_IN_HANDLER;
- t = g_cur_timer;
- g_cur_timer = NULL;
- list_del(&t->link);
- spin_unlock_bh(&g_polling_lock);
- do {
- pd = t->pd;
- oz_pd_handle_timer(pd, t->type);
- spin_lock_bh(&g_polling_lock);
- if (g_timer_pool_count < OZ_MAX_TIMER_POOL_SIZE) {
- t->link.next = g_timer_pool;
- g_timer_pool = &t->link;
- g_timer_pool_count++;
- t = NULL;
- }
- if (!list_empty(&g_timer_list)) {
- t2 = container_of(g_timer_list.next,
- struct oz_timer, link);
- if (time_before_eq(t2->due_time, jiffies))
- list_del(&t2->link);
- else
- t2 = NULL;
- } else {
- t2 = NULL;
- }
- spin_unlock_bh(&g_polling_lock);
- oz_pd_put(pd);
- kfree(t);
- t = t2;
- } while (t);
- g_timer_state = OZ_TIMER_IDLE;
- oz_protocol_timer_start();
+
+ pd = container_of(timer, struct oz_pd, heartbeat);
+ hrtimer_forward_now(timer, ktime_set(pd->pulse_period /
+ MSEC_PER_SEC, (pd->pulse_period % MSEC_PER_SEC) * NSEC_PER_MSEC));
+ oz_pd_get(pd);
+ tasklet_schedule(&pd->heartbeat_tasklet);
+ return HRTIMER_RESTART;
}
-/*------------------------------------------------------------------------------
- * Context: softirq
+
+/*
+ * Context: Interrupt
*/
-static void oz_protocol_timer_start(void)
+enum hrtimer_restart oz_pd_timeout_event(struct hrtimer *timer)
{
- spin_lock_bh(&g_polling_lock);
- if (!list_empty(&g_timer_list)) {
- g_cur_timer =
- container_of(g_timer_list.next, struct oz_timer, link);
- if (g_timer_state == OZ_TIMER_SET) {
- mod_timer(&g_timer, g_cur_timer->due_time);
- } else {
- g_timer.expires = g_cur_timer->due_time;
- g_timer.function = oz_protocol_timer;
- g_timer.data = 0;
- add_timer(&g_timer);
- }
- g_timer_state = OZ_TIMER_SET;
- } else {
- oz_trace("No queued timers\n");
- }
- spin_unlock_bh(&g_polling_lock);
+ struct oz_pd *pd;
+
+ pd = container_of(timer, struct oz_pd, timeout);
+ oz_pd_get(pd);
+ tasklet_schedule(&pd->timeout_tasklet);
+ return HRTIMER_NORESTART;
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq or process
*/
-void oz_timer_add(struct oz_pd *pd, int type, unsigned long due_time,
- int remove)
+void oz_timer_add(struct oz_pd *pd, int type, unsigned long due_time)
{
- struct list_head *e;
- struct oz_timer *t = NULL;
- int restart_needed = 0;
- spin_lock(&g_polling_lock);
- if (remove) {
- list_for_each(e, &g_timer_list) {
- t = container_of(e, struct oz_timer, link);
- if ((t->pd == pd) && (t->type == type)) {
- if (g_cur_timer == t) {
- restart_needed = 1;
- g_cur_timer = NULL;
- }
- list_del(e);
- break;
- }
- t = NULL;
- }
- }
- if (!t) {
- if (g_timer_pool) {
- t = container_of(g_timer_pool, struct oz_timer, link);
- g_timer_pool = g_timer_pool->next;
- g_timer_pool_count--;
+ spin_lock_bh(&g_polling_lock);
+ switch (type) {
+ case OZ_TIMER_TOUT:
+ case OZ_TIMER_STOP:
+ if (hrtimer_active(&pd->timeout)) {
+ hrtimer_set_expires(&pd->timeout, ktime_set(due_time /
+ MSEC_PER_SEC, (due_time % MSEC_PER_SEC) *
+ NSEC_PER_MSEC));
+ hrtimer_start_expires(&pd->timeout, HRTIMER_MODE_REL);
} else {
- t = kmalloc(sizeof(struct oz_timer), GFP_ATOMIC);
- }
- if (t) {
- t->pd = pd;
- t->type = type;
- oz_pd_get(pd);
- }
- }
- if (t) {
- struct oz_timer *t2;
- t->due_time = due_time;
- list_for_each(e, &g_timer_list) {
- t2 = container_of(e, struct oz_timer, link);
- if (time_before(due_time, t2->due_time)) {
- if (t2 == g_cur_timer) {
- g_cur_timer = NULL;
- restart_needed = 1;
- }
- break;
- }
+ hrtimer_start(&pd->timeout, ktime_set(due_time /
+ MSEC_PER_SEC, (due_time % MSEC_PER_SEC) *
+ NSEC_PER_MSEC), HRTIMER_MODE_REL);
}
- list_add_tail(&t->link, e);
- }
- if (g_timer_state == OZ_TIMER_IDLE)
- restart_needed = 1;
- else if (g_timer_state == OZ_TIMER_IN_HANDLER)
- restart_needed = 0;
- spin_unlock(&g_polling_lock);
- if (restart_needed)
- oz_protocol_timer_start();
-}
-/*------------------------------------------------------------------------------
- * Context: softirq or process
- */
-void oz_timer_delete(struct oz_pd *pd, int type)
-{
- struct list_head *chain = NULL;
- struct oz_timer *t;
- struct oz_timer *n;
- int restart_needed = 0;
- int release = 0;
- spin_lock(&g_polling_lock);
- list_for_each_entry_safe(t, n, &g_timer_list, link) {
- if ((t->pd == pd) && ((type == 0) || (t->type == type))) {
- if (g_cur_timer == t) {
- restart_needed = 1;
- g_cur_timer = NULL;
- del_timer(&g_timer);
- }
- list_del(&t->link);
- release++;
- if (g_timer_pool_count < OZ_MAX_TIMER_POOL_SIZE) {
- t->link.next = g_timer_pool;
- g_timer_pool = &t->link;
- g_timer_pool_count++;
- } else {
- t->link.next = chain;
- chain = &t->link;
- }
- if (type)
- break;
- }
- }
- if (g_timer_state == OZ_TIMER_IN_HANDLER)
- restart_needed = 0;
- else if (restart_needed)
- g_timer_state = OZ_TIMER_IDLE;
- spin_unlock(&g_polling_lock);
- if (restart_needed)
- oz_protocol_timer_start();
- while (release--)
- oz_pd_put(pd);
- while (chain) {
- t = container_of(chain, struct oz_timer, link);
- chain = chain->next;
- kfree(t);
+ pd->timeout_type = type;
+ break;
+ case OZ_TIMER_HEARTBEAT:
+ if (!hrtimer_active(&pd->heartbeat))
+ hrtimer_start(&pd->heartbeat, ktime_set(due_time /
+ MSEC_PER_SEC, (due_time % MSEC_PER_SEC) *
+ NSEC_PER_MSEC), HRTIMER_MODE_REL);
+ break;
}
+ spin_unlock_bh(&g_polling_lock);
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq or process
*/
void oz_pd_request_heartbeat(struct oz_pd *pd)
{
- unsigned long now = jiffies;
- unsigned long t;
- spin_lock(&g_polling_lock);
- if (pd->heartbeat_requested) {
- spin_unlock(&g_polling_lock);
- return;
- }
- if (pd->pulse_period_j)
- t = ((now / pd->pulse_period_j) + 1) * pd->pulse_period_j;
- else
- t = now + 1;
- pd->heartbeat_requested = 1;
- spin_unlock(&g_polling_lock);
- oz_timer_add(pd, OZ_TIMER_HEARTBEAT, t, 0);
+ oz_timer_add(pd, OZ_TIMER_HEARTBEAT, pd->pulse_period > 0 ?
+ pd->pulse_period : OZ_QUANTUM);
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq or process
*/
struct oz_pd *oz_pd_find(const u8 *mac_addr)
{
struct oz_pd *pd;
struct list_head *e;
+
spin_lock_bh(&g_polling_lock);
list_for_each(e, &g_pd_list) {
pd = container_of(e, struct oz_pd, link);
@@ -734,7 +606,8 @@ struct oz_pd *oz_pd_find(const u8 *mac_addr)
spin_unlock_bh(&g_polling_lock);
return NULL;
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: process
*/
void oz_app_enable(int app_id, int enable)
@@ -748,7 +621,8 @@ void oz_app_enable(int app_id, int enable)
spin_unlock_bh(&g_polling_lock);
}
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: softirq
*/
static int oz_pkt_recv(struct sk_buff *skb, struct net_device *dev,
@@ -782,10 +656,11 @@ static int oz_pkt_recv(struct sk_buff *skb, struct net_device *dev,
}
return 0;
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: process
*/
-void oz_binding_add(char *net_dev)
+void oz_binding_add(const char *net_dev)
{
struct oz_binding *binding;
@@ -795,43 +670,28 @@ void oz_binding_add(char *net_dev)
binding->ptype.func = oz_pkt_recv;
memcpy(binding->name, net_dev, OZ_MAX_BINDING_LEN);
if (net_dev && *net_dev) {
- oz_trace("Adding binding: %s\n", net_dev);
+ oz_dbg(ON, "Adding binding: %s\n", net_dev);
binding->ptype.dev =
dev_get_by_name(&init_net, net_dev);
if (binding->ptype.dev == NULL) {
- oz_trace("Netdev %s not found\n", net_dev);
+ oz_dbg(ON, "Netdev %s not found\n", net_dev);
kfree(binding);
binding = NULL;
}
} else {
- oz_trace("Binding to all netcards\n");
+ oz_dbg(ON, "Binding to all netcards\n");
binding->ptype.dev = NULL;
}
if (binding) {
dev_add_pack(&binding->ptype);
spin_lock_bh(&g_binding_lock);
- binding->next = g_binding;
- g_binding = binding;
+ list_add_tail(&binding->link, &g_binding);
spin_unlock_bh(&g_binding_lock);
}
}
}
-/*------------------------------------------------------------------------------
- * Context: process
- */
-static int compare_binding_name(char *s1, char *s2)
-{
- int i;
- for (i = 0; i < OZ_MAX_BINDING_LEN; i++) {
- if (*s1 != *s2)
- return 0;
- if (!*s1++)
- return 1;
- s2++;
- }
- return 1;
-}
-/*------------------------------------------------------------------------------
+
+/*
* Context: process
*/
static void pd_stop_all_for_device(struct net_device *net_dev)
@@ -839,6 +699,7 @@ static void pd_stop_all_for_device(struct net_device *net_dev)
struct list_head h;
struct oz_pd *pd;
struct oz_pd *n;
+
INIT_LIST_HEAD(&h);
spin_lock_bh(&g_polling_lock);
list_for_each_entry_safe(pd, n, &g_pd_list, link) {
@@ -854,38 +715,37 @@ static void pd_stop_all_for_device(struct net_device *net_dev)
oz_pd_put(pd);
}
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: process
*/
-void oz_binding_remove(char *net_dev)
+void oz_binding_remove(const char *net_dev)
{
struct oz_binding *binding;
- struct oz_binding **link;
- oz_trace("Removing binding: %s\n", net_dev);
+ int found = 0;
+
+ oz_dbg(ON, "Removing binding: %s\n", net_dev);
spin_lock_bh(&g_binding_lock);
- binding = g_binding;
- link = &g_binding;
- while (binding) {
- if (compare_binding_name(binding->name, net_dev)) {
- oz_trace("Binding '%s' found\n", net_dev);
- *link = binding->next;
+ list_for_each_entry(binding, &g_binding, link) {
+ if (strncmp(binding->name, net_dev, OZ_MAX_BINDING_LEN) == 0) {
+ oz_dbg(ON, "Binding '%s' found\n", net_dev);
+ found = 1;
break;
- } else {
- link = &binding;
- binding = binding->next;
}
}
spin_unlock_bh(&g_binding_lock);
- if (binding) {
+ if (found) {
dev_remove_pack(&binding->ptype);
if (binding->ptype.dev) {
dev_put(binding->ptype.dev);
pd_stop_all_for_device(binding->ptype.dev);
}
+ list_del(&binding->link);
kfree(binding);
}
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: process
*/
static char *oz_get_next_device_name(char *s, char *dname, int max_size)
@@ -899,7 +759,8 @@ static char *oz_get_next_device_name(char *s, char *dname, int max_size)
*dname = 0;
return s;
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: process
*/
int oz_protocol_init(char *devs)
@@ -915,10 +776,10 @@ int oz_protocol_init(char *devs)
oz_binding_add(d);
}
}
- init_timer(&g_timer);
return 0;
}
-/*------------------------------------------------------------------------------
+
+/*
* Context: process
*/
int oz_get_pd_list(struct oz_mac_addr *addr, int max_count)
@@ -926,6 +787,7 @@ int oz_get_pd_list(struct oz_mac_addr *addr, int max_count)
struct oz_pd *pd;
struct list_head *e;
int count = 0;
+
spin_lock_bh(&g_polling_lock);
list_for_each(e, &g_pd_list) {
if (count >= max_count)
@@ -936,14 +798,12 @@ int oz_get_pd_list(struct oz_mac_addr *addr, int max_count)
spin_unlock_bh(&g_polling_lock);
return count;
}
-/*------------------------------------------------------------------------------
-*/
+
void oz_polling_lock_bh(void)
{
spin_lock_bh(&g_polling_lock);
}
-/*------------------------------------------------------------------------------
-*/
+
void oz_polling_unlock_bh(void)
{
spin_unlock_bh(&g_polling_lock);
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-13 04:02:10 +0300