Commit 1617dae2 authored by Julian Wiedmann's avatar Julian Wiedmann Committed by David S. Miller
Browse files

s390/qeth: extract helpers for managing special IPs 



Reduce code duplication.

Signed-off-by: default avatarJulian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b9caa98c

drivers/s390/net/qeth_l3.h

+4 −9
Original line number Diff line number Diff line
@@ -119,15 +119,10 @@ int qeth_l3_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *); 
int qeth_l3_del_ipato_entry(struct qeth_card *card,

			    enum qeth_prot_versions proto, u8 *addr,

			    int mask_bits);

int qeth_l3_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);

int qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,

		     const u8 *addr);

int qeth_l3_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);

int qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,

		     const u8 *addr);

void qeth_l3_update_ipato(struct qeth_card *card);

struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions);

int qeth_l3_add_ip(struct qeth_card *, struct qeth_ipaddr *);

int qeth_l3_delete_ip(struct qeth_card *, struct qeth_ipaddr *);

int qeth_l3_modify_hsuid(struct qeth_card *card, bool add);

int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,

			     enum qeth_ip_types type,

			     enum qeth_prot_versions proto);



#endif /* __QETH_L3_H__ */

drivers/s390/net/qeth_l3_main.c

+41 −117
Original line number Diff line number Diff line
@@ -67,7 +67,7 @@ void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr, 
		qeth_l3_ipaddr6_to_string(addr, buf);

}



struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)

static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)

{

	struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
@@ -147,12 +147,18 @@ static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, 
	return rc;

}



int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)

static int qeth_l3_delete_ip(struct qeth_card *card,

			     struct qeth_ipaddr *tmp_addr)

{

	int rc = 0;

	struct qeth_ipaddr *addr;



	QETH_CARD_TEXT(card, 4, "delip");

	if (tmp_addr->type == QETH_IP_TYPE_RXIP)

		QETH_CARD_TEXT(card, 2, "delrxip");

	else if (tmp_addr->type == QETH_IP_TYPE_VIPA)

		QETH_CARD_TEXT(card, 2, "delvipa");

	else

		QETH_CARD_TEXT(card, 2, "delip");



	if (tmp_addr->proto == QETH_PROT_IPV4)

		QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
@@ -180,13 +186,18 @@ int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 
	return rc;

}



int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)

static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)

{

	int rc = 0;

	struct qeth_ipaddr *addr;

	char buf[40];



	QETH_CARD_TEXT(card, 4, "addip");

	if (tmp_addr->type == QETH_IP_TYPE_RXIP)

		QETH_CARD_TEXT(card, 2, "addrxip");

	else if (tmp_addr->type == QETH_IP_TYPE_VIPA)

		QETH_CARD_TEXT(card, 2, "addvipa");

	else

		QETH_CARD_TEXT(card, 2, "addip");



	if (tmp_addr->proto == QETH_PROT_IPV4)

		QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
@@ -598,132 +609,45 @@ int qeth_l3_del_ipato_entry(struct qeth_card *card, 
	return rc;

}



/*

 * VIPA related functions

 */

int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,

	      const u8 *addr)

{

	struct qeth_ipaddr *ipaddr;

	int rc;



	ipaddr = qeth_l3_get_addr_buffer(proto);

	if (ipaddr) {

		if (proto == QETH_PROT_IPV4) {

			QETH_CARD_TEXT(card, 2, "addvipa4");

			memcpy(&ipaddr->u.a4.addr, addr, 4);

			ipaddr->u.a4.mask = 0;

		} else if (proto == QETH_PROT_IPV6) {

			QETH_CARD_TEXT(card, 2, "addvipa6");

			memcpy(&ipaddr->u.a6.addr, addr, 16);

			ipaddr->u.a6.pfxlen = 0;

		}

		ipaddr->type = QETH_IP_TYPE_VIPA;

		ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;

		ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;

	} else

		return -ENOMEM;



	spin_lock_bh(&card->ip_lock);

	rc = qeth_l3_add_ip(card, ipaddr);

	spin_unlock_bh(&card->ip_lock);



	kfree(ipaddr);



	return rc;

}



int qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,

		     const u8 *addr)

int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,

			     enum qeth_ip_types type,

			     enum qeth_prot_versions proto)

{

	struct qeth_ipaddr *ipaddr;

	struct qeth_ipaddr addr;

	int rc;



	ipaddr = qeth_l3_get_addr_buffer(proto);

	if (ipaddr) {

		if (proto == QETH_PROT_IPV4) {

			QETH_CARD_TEXT(card, 2, "delvipa4");

			memcpy(&ipaddr->u.a4.addr, addr, 4);

			ipaddr->u.a4.mask = 0;

		} else if (proto == QETH_PROT_IPV6) {

			QETH_CARD_TEXT(card, 2, "delvipa6");

			memcpy(&ipaddr->u.a6.addr, addr, 16);

			ipaddr->u.a6.pfxlen = 0;

		}

		ipaddr->type = QETH_IP_TYPE_VIPA;

	} else

		return -ENOMEM;



	spin_lock_bh(&card->ip_lock);

	rc = qeth_l3_delete_ip(card, ipaddr);

	spin_unlock_bh(&card->ip_lock);



	kfree(ipaddr);

	return rc;

	qeth_l3_init_ipaddr(&addr, type, proto);

	if (proto == QETH_PROT_IPV4)

		memcpy(&addr.u.a4.addr, ip, 4);

	else

		memcpy(&addr.u.a6.addr, ip, 16);

	if (type == QETH_IP_TYPE_RXIP) {

		addr.set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;

	} else {

		addr.set_flags = QETH_IPA_SETIP_VIPA_FLAG;

		addr.del_flags = QETH_IPA_DELIP_VIPA_FLAG;

	}



/*

 * proxy ARP related functions

 */

int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,

	      const u8 *addr)

{

	struct qeth_ipaddr *ipaddr;

	int rc;



	ipaddr = qeth_l3_get_addr_buffer(proto);

	if (ipaddr) {

		if (proto == QETH_PROT_IPV4) {

			QETH_CARD_TEXT(card, 2, "addrxip4");

			memcpy(&ipaddr->u.a4.addr, addr, 4);

			ipaddr->u.a4.mask = 0;

		} else if (proto == QETH_PROT_IPV6) {

			QETH_CARD_TEXT(card, 2, "addrxip6");

			memcpy(&ipaddr->u.a6.addr, addr, 16);

			ipaddr->u.a6.pfxlen = 0;

		}



		ipaddr->type = QETH_IP_TYPE_RXIP;

		ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;

		ipaddr->del_flags = 0;

	} else

		return -ENOMEM;



	spin_lock_bh(&card->ip_lock);

	rc = qeth_l3_add_ip(card, ipaddr);

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

	spin_unlock_bh(&card->ip_lock);



	kfree(ipaddr);



	return rc;

}



int qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,

		     const u8 *addr)

int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)

{

	struct qeth_ipaddr *ipaddr;

	int rc;

	struct qeth_ipaddr addr;

	int rc, i;



	ipaddr = qeth_l3_get_addr_buffer(proto);

	if (ipaddr) {

		if (proto == QETH_PROT_IPV4) {

			QETH_CARD_TEXT(card, 2, "delrxip4");

			memcpy(&ipaddr->u.a4.addr, addr, 4);

			ipaddr->u.a4.mask = 0;

		} else if (proto == QETH_PROT_IPV6) {

			QETH_CARD_TEXT(card, 2, "delrxip6");

			memcpy(&ipaddr->u.a6.addr, addr, 16);

			ipaddr->u.a6.pfxlen = 0;

		}

		ipaddr->type = QETH_IP_TYPE_RXIP;

	} else

		return -ENOMEM;

	qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);

	addr.u.a6.addr.s6_addr[0] = 0xfe;

	addr.u.a6.addr.s6_addr[1] = 0x80;

	for (i = 0; i < 8; i++)

		addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];



	spin_lock_bh(&card->ip_lock);

	rc = qeth_l3_delete_ip(card, ipaddr);

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

	spin_unlock_bh(&card->ip_lock);



	kfree(ipaddr);

	return rc;

}

drivers/s390/net/qeth_l3_sys.c

+12 −39
Original line number Diff line number Diff line
@@ -272,9 +272,8 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev, 
		struct device_attribute *attr, const char *buf, size_t count)

{

	struct qeth_card *card = dev_get_drvdata(dev);

	struct qeth_ipaddr *addr;

	char *tmp;

	int rc, i;

	int rc;



	if (!card)

		return -EINVAL;
@@ -293,25 +292,9 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev, 
	if (strlen(tmp) > 8)

		return -EINVAL;



	if (card->options.hsuid[0]) {

	if (card->options.hsuid[0])

		/* delete old ip address */

		addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);

		if (!addr)

			return -ENOMEM;



		addr->u.a6.addr.s6_addr32[0] = cpu_to_be32(0xfe800000);

		addr->u.a6.addr.s6_addr32[1] = 0x00000000;

		for (i = 8; i < 16; i++)

			addr->u.a6.addr.s6_addr[i] =

				card->options.hsuid[i - 8];

		addr->u.a6.pfxlen = 0;

		addr->type = QETH_IP_TYPE_NORMAL;



		spin_lock_bh(&card->ip_lock);

		qeth_l3_delete_ip(card, addr);

		spin_unlock_bh(&card->ip_lock);

		kfree(addr);

	}

		qeth_l3_modify_hsuid(card, false);



	if (strlen(tmp) == 0) {

		/* delete ip address only */
@@ -331,21 +314,7 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev, 
	if (card->dev)

		memcpy(card->dev->perm_addr, card->options.hsuid, 9);



	addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);

	if (addr != NULL) {

		addr->u.a6.addr.s6_addr32[0] = cpu_to_be32(0xfe800000);

		addr->u.a6.addr.s6_addr32[1] = 0x00000000;

		for (i = 8; i < 16; i++)

			addr->u.a6.addr.s6_addr[i] = card->options.hsuid[i - 8];

		addr->u.a6.pfxlen = 0;

		addr->type = QETH_IP_TYPE_NORMAL;

	} else

		return -ENOMEM;



	spin_lock_bh(&card->ip_lock);

	rc = qeth_l3_add_ip(card, addr);

	spin_unlock_bh(&card->ip_lock);

	kfree(addr);

	rc = qeth_l3_modify_hsuid(card, true);



	return rc ? rc : count;

}
@@ -767,7 +736,8 @@ static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count, 
	mutex_lock(&card->conf_mutex);

	rc = qeth_l3_parse_vipae(buf, proto, addr);

	if (!rc)

		rc = qeth_l3_add_vipa(card, proto, addr);

		rc = qeth_l3_modify_rxip_vipa(card, true, addr,

					      QETH_IP_TYPE_VIPA, proto);

	mutex_unlock(&card->conf_mutex);

	return rc ? rc : count;

}
@@ -796,7 +766,8 @@ static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count, 
	mutex_lock(&card->conf_mutex);

	rc = qeth_l3_parse_vipae(buf, proto, addr);

	if (!rc)

		rc = qeth_l3_del_vipa(card, proto, addr);

		rc = qeth_l3_modify_rxip_vipa(card, false, addr,

					      QETH_IP_TYPE_VIPA, proto);

	mutex_unlock(&card->conf_mutex);

	return rc ? rc : count;

}
@@ -908,7 +879,8 @@ static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count, 
	mutex_lock(&card->conf_mutex);

	rc = qeth_l3_parse_rxipe(buf, proto, addr);

	if (!rc)

		rc = qeth_l3_add_rxip(card, proto, addr);

		rc = qeth_l3_modify_rxip_vipa(card, true, addr,

					      QETH_IP_TYPE_RXIP, proto);

	mutex_unlock(&card->conf_mutex);

	return rc ? rc : count;

}
@@ -937,7 +909,8 @@ static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count, 
	mutex_lock(&card->conf_mutex);

	rc = qeth_l3_parse_rxipe(buf, proto, addr);

	if (!rc)

		rc = qeth_l3_del_rxip(card, proto, addr);

		rc = qeth_l3_modify_rxip_vipa(card, false, addr,

					      QETH_IP_TYPE_RXIP, proto);

	mutex_unlock(&card->conf_mutex);

	return rc ? rc : count;

}

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