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Commit df2a2a52 authored by Julian Wiedmann's avatar Julian Wiedmann Committed by David S. Miller
Browse files

s390/qeth: convert IP table spinlock to mutex 



All users of the lock are running in process context now.

Signed-off-by: default avatarJulian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7686e4b6

drivers/s390/net/qeth_core.h

+1 −1
Original line number Diff line number Diff line
@@ -779,6 +779,7 @@ struct qeth_card { 
	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];

	DECLARE_HASHTABLE(mac_htable, 4);

	DECLARE_HASHTABLE(ip_htable, 4);

	struct mutex ip_lock;

	DECLARE_HASHTABLE(ip_mc_htable, 4);

	struct work_struct rx_mode_work;

	struct work_struct kernel_thread_starter;
@@ -786,7 +787,6 @@ struct qeth_card { 
	unsigned long thread_start_mask;

	unsigned long thread_allowed_mask;

	unsigned long thread_running_mask;

	spinlock_t ip_lock;

	struct qeth_ipato ipato;

	struct list_head cmd_waiter_list;

	/* QDIO buffer handling */

drivers/s390/net/qeth_core_main.c

+0 −1
Original line number Diff line number Diff line
@@ -1410,7 +1410,6 @@ static void qeth_setup_card(struct qeth_card *card) 
	card->info.type = CARD_RDEV(card)->id.driver_info;

	card->state = CARD_STATE_DOWN;

	spin_lock_init(&card->lock);

	spin_lock_init(&card->ip_lock);

	spin_lock_init(&card->thread_mask_lock);

	mutex_init(&card->conf_mutex);

	mutex_init(&card->discipline_mutex);

drivers/s390/net/qeth_l3_main.c

+17 −17
Original line number Diff line number Diff line
@@ -246,9 +246,9 @@ static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 
		 */

		if (addr->proto == QETH_PROT_IPV4) {

			addr->in_progress = 1;

			spin_unlock_bh(&card->ip_lock);

			mutex_unlock(&card->ip_lock);

			rc = qeth_l3_register_addr_entry(card, addr);

			spin_lock_bh(&card->ip_lock);

			mutex_lock(&card->ip_lock);

			addr->in_progress = 0;

		} else

			rc = qeth_l3_register_addr_entry(card, addr);
@@ -273,9 +273,9 @@ static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr, 
{

	int rc;



	spin_lock_bh(&card->ip_lock);

	mutex_lock(&card->ip_lock);

	rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);

	spin_unlock_bh(&card->ip_lock);

	mutex_unlock(&card->ip_lock);



	return rc;

}
@@ -300,7 +300,7 @@ static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 


	QETH_CARD_TEXT(card, 4, "clearip");



	spin_lock_bh(&card->ip_lock);

	mutex_lock(&card->ip_lock);



	hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {

		if (!recover) {
@@ -311,7 +311,7 @@ static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 
		addr->disp_flag = QETH_DISP_ADDR_ADD;

	}



	spin_unlock_bh(&card->ip_lock);

	mutex_unlock(&card->ip_lock);

}



static void qeth_l3_recover_ip(struct qeth_card *card)
@@ -323,15 +323,15 @@ static void qeth_l3_recover_ip(struct qeth_card *card) 


	QETH_CARD_TEXT(card, 4, "recovrip");



	spin_lock_bh(&card->ip_lock);

	mutex_lock(&card->ip_lock);



	hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {

		if (addr->disp_flag == QETH_DISP_ADDR_ADD) {

			if (addr->proto == QETH_PROT_IPV4) {

				addr->in_progress = 1;

				spin_unlock_bh(&card->ip_lock);

				mutex_unlock(&card->ip_lock);

				rc = qeth_l3_register_addr_entry(card, addr);

				spin_lock_bh(&card->ip_lock);

				mutex_lock(&card->ip_lock);

				addr->in_progress = 0;

			} else

				rc = qeth_l3_register_addr_entry(card, addr);
@@ -347,8 +347,7 @@ static void qeth_l3_recover_ip(struct qeth_card *card) 
		}

	}



	spin_unlock_bh(&card->ip_lock);



	mutex_unlock(&card->ip_lock);

}



static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
@@ -573,7 +572,7 @@ static void qeth_l3_clear_ipato_list(struct qeth_card *card) 
{

	struct qeth_ipato_entry *ipatoe, *tmp;



	spin_lock_bh(&card->ip_lock);

	mutex_lock(&card->ip_lock);



	list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {

		list_del(&ipatoe->entry);
@@ -581,7 +580,7 @@ static void qeth_l3_clear_ipato_list(struct qeth_card *card) 
	}



	qeth_l3_update_ipato(card);

	spin_unlock_bh(&card->ip_lock);

	mutex_unlock(&card->ip_lock);

}



int qeth_l3_add_ipato_entry(struct qeth_card *card,
@@ -592,7 +591,7 @@ int qeth_l3_add_ipato_entry(struct qeth_card *card, 


	QETH_CARD_TEXT(card, 2, "addipato");



	spin_lock_bh(&card->ip_lock);

	mutex_lock(&card->ip_lock);



	list_for_each_entry(ipatoe, &card->ipato.entries, entry) {

		if (ipatoe->proto != new->proto)
@@ -610,7 +609,7 @@ int qeth_l3_add_ipato_entry(struct qeth_card *card, 
		qeth_l3_update_ipato(card);

	}



	spin_unlock_bh(&card->ip_lock);

	mutex_unlock(&card->ip_lock);



	return rc;

}
@@ -624,7 +623,7 @@ int qeth_l3_del_ipato_entry(struct qeth_card *card, 


	QETH_CARD_TEXT(card, 2, "delipato");



	spin_lock_bh(&card->ip_lock);

	mutex_lock(&card->ip_lock);



	list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {

		if (ipatoe->proto != proto)
@@ -639,7 +638,7 @@ int qeth_l3_del_ipato_entry(struct qeth_card *card, 
		}

	}



	spin_unlock_bh(&card->ip_lock);

	mutex_unlock(&card->ip_lock);

	return rc;

}
@@ -2267,6 +2266,7 @@ static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 
	int rc;



	hash_init(card->ip_htable);

	mutex_init(&card->ip_lock);

	card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,

					       dev_name(&gdev->dev));

	if (!card->cmd_wq)

drivers/s390/net/qeth_l3_sys.c

+10 −10
Original line number Diff line number Diff line
@@ -367,9 +367,9 @@ static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev, 


	if (card->ipato.enabled != enable) {

		card->ipato.enabled = enable;

		spin_lock_bh(&card->ip_lock);

		mutex_lock(&card->ip_lock);

		qeth_l3_update_ipato(card);

		spin_unlock_bh(&card->ip_lock);

		mutex_unlock(&card->ip_lock);

	}

out:

	mutex_unlock(&card->conf_mutex);
@@ -412,9 +412,9 @@ static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev, 


	if (card->ipato.invert4 != invert) {

		card->ipato.invert4 = invert;

		spin_lock_bh(&card->ip_lock);

		mutex_lock(&card->ip_lock);

		qeth_l3_update_ipato(card);

		spin_unlock_bh(&card->ip_lock);

		mutex_unlock(&card->ip_lock);

	}

out:

	mutex_unlock(&card->conf_mutex);
@@ -436,7 +436,7 @@ static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card, 
	entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;

	/* add strlen for "/<mask>\n" */

	entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;

	spin_lock_bh(&card->ip_lock);

	mutex_lock(&card->ip_lock);

	list_for_each_entry(ipatoe, &card->ipato.entries, entry) {

		if (ipatoe->proto != proto)

			continue;
@@ -449,7 +449,7 @@ static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card, 
		i += snprintf(buf + i, PAGE_SIZE - i,

			      "%s/%i\n", addr_str, ipatoe->mask_bits);

	}

	spin_unlock_bh(&card->ip_lock);

	mutex_unlock(&card->ip_lock);

	i += snprintf(buf + i, PAGE_SIZE - i, "\n");



	return i;
@@ -598,9 +598,9 @@ static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev, 


	if (card->ipato.invert6 != invert) {

		card->ipato.invert6 = invert;

		spin_lock_bh(&card->ip_lock);

		mutex_lock(&card->ip_lock);

		qeth_l3_update_ipato(card);

		spin_unlock_bh(&card->ip_lock);

		mutex_unlock(&card->ip_lock);

	}

out:

	mutex_unlock(&card->conf_mutex);
@@ -684,7 +684,7 @@ static ssize_t qeth_l3_dev_ip_add_show(struct device *dev, char *buf, 


	entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;

	entry_len += 2; /* \n + terminator */

	spin_lock_bh(&card->ip_lock);

	mutex_lock(&card->ip_lock);

	hash_for_each(card->ip_htable, i, ipaddr, hnode) {

		if (ipaddr->proto != proto || ipaddr->type != type)

			continue;
@@ -698,7 +698,7 @@ static ssize_t qeth_l3_dev_ip_add_show(struct device *dev, char *buf, 
		str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "%s\n",

				    addr_str);

	}

	spin_unlock_bh(&card->ip_lock);

	mutex_unlock(&card->ip_lock);

	str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "\n");



	return str_len;