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authorTina Ruchandani <ruchandani.tina@gmail.com>2017-11-27 17:02:17 +0300
committerDavid S. Miller <davem@davemloft.net>2017-11-30 17:26:32 +0300
commitd750dbdc071bf863112ea83c64cd7c44d4bad261 (patch)
tree6de5b06174f72a5cff623e5fb0c46fd05c6abcf2 /net/atm/mpoa_caches.c
parent59c036995c65606ae7d4ba3b93dfc01361618dce (diff)
downloadlinux-d750dbdc071bf863112ea83c64cd7c44d4bad261.tar.xz
atm: mpoa: remove 32-bit timekeeping
net/atm/mpoa_* files use 'struct timeval' to store event timestamps. struct timeval uses a 32-bit seconds field which will overflow in the year 2038 and beyond. Morever, the timestamps are being compared only to get seconds elapsed, so struct timeval which stores a seconds and microseconds field is an overkill. This patch replaces the use of struct timeval with time64_t to store a 64-bit seconds field. Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/atm/mpoa_caches.c')
-rw-r--r--net/atm/mpoa_caches.c48
1 files changed, 23 insertions, 25 deletions
diff --git a/net/atm/mpoa_caches.c b/net/atm/mpoa_caches.c
index e01450bb32d6..4bb418313720 100644
--- a/net/atm/mpoa_caches.c
+++ b/net/atm/mpoa_caches.c
@@ -117,7 +117,7 @@ static in_cache_entry *in_cache_add_entry(__be32 dst_ip,
memcpy(entry->MPS_ctrl_ATM_addr, client->mps_ctrl_addr, ATM_ESA_LEN);
entry->ctrl_info.in_dst_ip = dst_ip;
- do_gettimeofday(&(entry->tv));
+ entry->time = ktime_get_seconds();
entry->retry_time = client->parameters.mpc_p4;
entry->count = 1;
entry->entry_state = INGRESS_INVALID;
@@ -148,7 +148,7 @@ static int cache_hit(in_cache_entry *entry, struct mpoa_client *mpc)
if (qos != NULL)
msg.qos = qos->qos;
msg_to_mpoad(&msg, mpc);
- do_gettimeofday(&(entry->reply_wait));
+ entry->reply_wait = ktime_get_seconds();
entry->entry_state = INGRESS_RESOLVING;
}
if (entry->shortcut != NULL)
@@ -171,7 +171,7 @@ static int cache_hit(in_cache_entry *entry, struct mpoa_client *mpc)
if (qos != NULL)
msg.qos = qos->qos;
msg_to_mpoad(&msg, mpc);
- do_gettimeofday(&(entry->reply_wait));
+ entry->reply_wait = ktime_get_seconds();
}
return CLOSED;
@@ -227,17 +227,16 @@ static void in_cache_remove_entry(in_cache_entry *entry,
static void clear_count_and_expired(struct mpoa_client *client)
{
in_cache_entry *entry, *next_entry;
- struct timeval now;
+ time64_t now;
- do_gettimeofday(&now);
+ now = ktime_get_seconds();
write_lock_bh(&client->ingress_lock);
entry = client->in_cache;
while (entry != NULL) {
entry->count = 0;
next_entry = entry->next;
- if ((now.tv_sec - entry->tv.tv_sec)
- > entry->ctrl_info.holding_time) {
+ if ((now - entry->time) > entry->ctrl_info.holding_time) {
dprintk("holding time expired, ip = %pI4\n",
&entry->ctrl_info.in_dst_ip);
client->in_ops->remove_entry(entry, client);
@@ -253,35 +252,35 @@ static void check_resolving_entries(struct mpoa_client *client)
struct atm_mpoa_qos *qos;
in_cache_entry *entry;
- struct timeval now;
+ time64_t now;
struct k_message msg;
- do_gettimeofday(&now);
+ now = ktime_get_seconds();
read_lock_bh(&client->ingress_lock);
entry = client->in_cache;
while (entry != NULL) {
if (entry->entry_state == INGRESS_RESOLVING) {
- if ((now.tv_sec - entry->hold_down.tv_sec) <
- client->parameters.mpc_p6) {
+
+ if ((now - entry->hold_down)
+ < client->parameters.mpc_p6) {
entry = entry->next; /* Entry in hold down */
continue;
}
- if ((now.tv_sec - entry->reply_wait.tv_sec) >
- entry->retry_time) {
+ if ((now - entry->reply_wait) > entry->retry_time) {
entry->retry_time = MPC_C1 * (entry->retry_time);
/*
* Retry time maximum exceeded,
* put entry in hold down.
*/
if (entry->retry_time > client->parameters.mpc_p5) {
- do_gettimeofday(&(entry->hold_down));
+ entry->hold_down = ktime_get_seconds();
entry->retry_time = client->parameters.mpc_p4;
entry = entry->next;
continue;
}
/* Ask daemon to send a resolution request. */
- memset(&(entry->hold_down), 0, sizeof(struct timeval));
+ memset(&entry->hold_down, 0, sizeof(time64_t));
msg.type = SND_MPOA_RES_RTRY;
memcpy(msg.MPS_ctrl, client->mps_ctrl_addr, ATM_ESA_LEN);
msg.content.in_info = entry->ctrl_info;
@@ -289,7 +288,7 @@ static void check_resolving_entries(struct mpoa_client *client)
if (qos != NULL)
msg.qos = qos->qos;
msg_to_mpoad(&msg, client);
- do_gettimeofday(&(entry->reply_wait));
+ entry->reply_wait = ktime_get_seconds();
}
}
entry = entry->next;
@@ -300,18 +299,18 @@ static void check_resolving_entries(struct mpoa_client *client)
/* Call this every MPC-p5 seconds. */
static void refresh_entries(struct mpoa_client *client)
{
- struct timeval now;
+ time64_t now;
struct in_cache_entry *entry = client->in_cache;
ddprintk("refresh_entries\n");
- do_gettimeofday(&now);
+ now = ktime_get_seconds();
read_lock_bh(&client->ingress_lock);
while (entry != NULL) {
if (entry->entry_state == INGRESS_RESOLVED) {
if (!(entry->refresh_time))
entry->refresh_time = (2 * (entry->ctrl_info.holding_time))/3;
- if ((now.tv_sec - entry->reply_wait.tv_sec) >
+ if ((now - entry->reply_wait) >
entry->refresh_time) {
dprintk("refreshing an entry.\n");
entry->entry_state = INGRESS_REFRESHING;
@@ -480,7 +479,7 @@ static eg_cache_entry *eg_cache_add_entry(struct k_message *msg,
memcpy(entry->MPS_ctrl_ATM_addr, client->mps_ctrl_addr, ATM_ESA_LEN);
entry->ctrl_info = msg->content.eg_info;
- do_gettimeofday(&(entry->tv));
+ entry->time = ktime_get_seconds();
entry->entry_state = EGRESS_RESOLVED;
dprintk("new_eg_cache_entry cache_id %u\n",
ntohl(entry->ctrl_info.cache_id));
@@ -495,7 +494,7 @@ static eg_cache_entry *eg_cache_add_entry(struct k_message *msg,
static void update_eg_cache_entry(eg_cache_entry *entry, uint16_t holding_time)
{
- do_gettimeofday(&(entry->tv));
+ entry->time = ktime_get_seconds();
entry->entry_state = EGRESS_RESOLVED;
entry->ctrl_info.holding_time = holding_time;
}
@@ -503,17 +502,16 @@ static void update_eg_cache_entry(eg_cache_entry *entry, uint16_t holding_time)
static void clear_expired(struct mpoa_client *client)
{
eg_cache_entry *entry, *next_entry;
- struct timeval now;
+ time64_t now;
struct k_message msg;
- do_gettimeofday(&now);
+ now = ktime_get_seconds();
write_lock_irq(&client->egress_lock);
entry = client->eg_cache;
while (entry != NULL) {
next_entry = entry->next;
- if ((now.tv_sec - entry->tv.tv_sec)
- > entry->ctrl_info.holding_time) {
+ if ((now - entry->time) > entry->ctrl_info.holding_time) {
msg.type = SND_EGRESS_PURGE;
msg.content.eg_info = entry->ctrl_info;
dprintk("egress_cache: holding time expired, cache_id = %u.\n",