--- /dev/null
+/*
+ * Copyright IBM Corp. 2007, 2009
+ * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
+ * Frank Pavlic <fpavlic@de.ibm.com>,
+ * Thomas Spatzier <tspat@de.ibm.com>,
+ * Frank Blaschka <frank.blaschka@de.ibm.com>
+ */
+
+#define KMSG_COMPONENT "qeth"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/bitops.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/etherdevice.h>
+#include <linux/mii.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/inetdevice.h>
+#include <linux/igmp.h>
+#include <linux/slab.h>
+#include <linux/if_vlan.h>
+
+#include <net/ip.h>
+#include <net/arp.h>
+#include <net/route.h>
+#include <net/ip6_fib.h>
+#include <net/ip6_checksum.h>
+#include <net/iucv/af_iucv.h>
+
+#include "qeth_l3.h"
+
+
+static int qeth_l3_set_offline(struct ccwgroup_device *);
+static int qeth_l3_recover(void *);
+static int qeth_l3_stop(struct net_device *);
+static void qeth_l3_set_multicast_list(struct net_device *);
+static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
+static int qeth_l3_register_addr_entry(struct qeth_card *,
+ struct qeth_ipaddr *);
+static int qeth_l3_deregister_addr_entry(struct qeth_card *,
+ struct qeth_ipaddr *);
+static int __qeth_l3_set_online(struct ccwgroup_device *, int);
+static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
+
+static int qeth_l3_isxdigit(char *buf)
+{
+ while (*buf) {
+ if (!isxdigit(*buf++))
+ return 0;
+ }
+ return 1;
+}
+
+static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
+{
+ sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
+}
+
+static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
+{
+ int count = 0, rc = 0;
+ unsigned int in[4];
+ char c;
+
+ rc = sscanf(buf, "%u.%u.%u.%u%c",
+ &in[0], &in[1], &in[2], &in[3], &c);
+ if (rc != 4 && (rc != 5 || c != '\n'))
+ return -EINVAL;
+ for (count = 0; count < 4; count++) {
+ if (in[count] > 255)
+ return -EINVAL;
+ addr[count] = in[count];
+ }
+ return 0;
+}
+
+static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
+{
+ sprintf(buf, "%pI6", addr);
+}
+
+static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
+{
+ const char *end, *end_tmp, *start;
+ __u16 *in;
+ char num[5];
+ int num2, cnt, out, found, save_cnt;
+ unsigned short in_tmp[8] = {0, };
+
+ cnt = out = found = save_cnt = num2 = 0;
+ end = start = buf;
+ in = (__u16 *) addr;
+ memset(in, 0, 16);
+ while (*end) {
+ end = strchr(start, ':');
+ if (end == NULL) {
+ end = buf + strlen(buf);
+ end_tmp = strchr(start, '\n');
+ if (end_tmp != NULL)
+ end = end_tmp;
+ out = 1;
+ }
+ if ((end - start)) {
+ memset(num, 0, 5);
+ if ((end - start) > 4)
+ return -EINVAL;
+ memcpy(num, start, end - start);
+ if (!qeth_l3_isxdigit(num))
+ return -EINVAL;
+ sscanf(start, "%x", &num2);
+ if (found)
+ in_tmp[save_cnt++] = num2;
+ else
+ in[cnt++] = num2;
+ if (out)
+ break;
+ } else {
+ if (found)
+ return -EINVAL;
+ found = 1;
+ }
+ start = ++end;
+ }
+ if (cnt + save_cnt > 8)
+ return -EINVAL;
+ cnt = 7;
+ while (save_cnt)
+ in[cnt--] = in_tmp[--save_cnt];
+ return 0;
+}
+
+void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
+ char *buf)
+{
+ if (proto == QETH_PROT_IPV4)
+ qeth_l3_ipaddr4_to_string(addr, buf);
+ else if (proto == QETH_PROT_IPV6)
+ qeth_l3_ipaddr6_to_string(addr, buf);
+}
+
+int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
+ __u8 *addr)
+{
+ if (proto == QETH_PROT_IPV4)
+ return qeth_l3_string_to_ipaddr4(buf, addr);
+ else if (proto == QETH_PROT_IPV6)
+ return qeth_l3_string_to_ipaddr6(buf, addr);
+ else
+ return -EINVAL;
+}
+
+static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
+{
+ int i, j;
+ u8 octet;
+
+ for (i = 0; i < len; ++i) {
+ octet = addr[i];
+ for (j = 7; j >= 0; --j) {
+ bits[i*8 + j] = octet & 1;
+ octet >>= 1;
+ }
+ }
+}
+
+int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
+ struct qeth_ipaddr *addr)
+{
+ struct qeth_ipato_entry *ipatoe;
+ u8 addr_bits[128] = {0, };
+ u8 ipatoe_bits[128] = {0, };
+ int rc = 0;
+
+ if (!card->ipato.enabled)
+ return 0;
+
+ qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
+ (addr->proto == QETH_PROT_IPV4)? 4:16);
+ list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
+ if (addr->proto != ipatoe->proto)
+ continue;
+ qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
+ (ipatoe->proto == QETH_PROT_IPV4) ?
+ 4 : 16);
+ if (addr->proto == QETH_PROT_IPV4)
+ rc = !memcmp(addr_bits, ipatoe_bits,
+ min(32, ipatoe->mask_bits));
+ else
+ rc = !memcmp(addr_bits, ipatoe_bits,
+ min(128, ipatoe->mask_bits));
+ if (rc)
+ break;
+ }
+ /* invert? */
+ if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
+ rc = !rc;
+ else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
+ rc = !rc;
+
+ return rc;
+}
+
+/*
+ * Add IP to be added to todo list. If there is already an "add todo"
+ * in this list we just incremenent the reference count.
+ * Returns 0 if we just incremented reference count.
+ */
+static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
+ struct qeth_ipaddr *addr, int add)
+{
+ struct qeth_ipaddr *tmp, *t;
+ int found = 0;
+
+ if (card->options.sniffer)
+ return 0;
+ list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
+ if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
+ (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
+ return 0;
+ if ((tmp->proto == QETH_PROT_IPV4) &&
+ (addr->proto == QETH_PROT_IPV4) &&
+ (tmp->type == addr->type) &&
+ (tmp->is_multicast == addr->is_multicast) &&
+ (tmp->u.a4.addr == addr->u.a4.addr) &&
+ (tmp->u.a4.mask == addr->u.a4.mask)) {
+ found = 1;
+ break;
+ }
+ if ((tmp->proto == QETH_PROT_IPV6) &&
+ (addr->proto == QETH_PROT_IPV6) &&
+ (tmp->type == addr->type) &&
+ (tmp->is_multicast == addr->is_multicast) &&
+ (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
+ (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
+ sizeof(struct in6_addr)) == 0)) {
+ found = 1;
+ break;
+ }
+ }
+ if (found) {
+ if (addr->users != 0)
+ tmp->users += addr->users;
+ else
+ tmp->users += add ? 1 : -1;
+ if (tmp->users == 0) {
+ list_del(&tmp->entry);
+ kfree(tmp);
+ }
+ return 0;
+ } else {
+ if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
+ list_add(&addr->entry, card->ip_tbd_list);
+ else {
+ if (addr->users == 0)
+ addr->users += add ? 1 : -1;
+ if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
+ qeth_l3_is_addr_covered_by_ipato(card, addr)) {
+ QETH_CARD_TEXT(card, 2, "tkovaddr");
+ addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
+ }
+ list_add_tail(&addr->entry, card->ip_tbd_list);
+ }
+ return 1;
+ }
+}
+
+int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ QETH_CARD_TEXT(card, 4, "delip");
+
+ if (addr->proto == QETH_PROT_IPV4)
+ QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
+ else {
+ QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
+ QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
+ }
+ spin_lock_irqsave(&card->ip_lock, flags);
+ rc = __qeth_l3_insert_ip_todo(card, addr, 0);
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ return rc;
+}
+
+int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
+{
+ unsigned long flags;
+ int rc = 0;
+
+ QETH_CARD_TEXT(card, 4, "addip");
+ if (addr->proto == QETH_PROT_IPV4)
+ QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
+ else {
+ QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
+ QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
+ }
+ spin_lock_irqsave(&card->ip_lock, flags);
+ rc = __qeth_l3_insert_ip_todo(card, addr, 1);
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ return rc;
+}
+
+
+struct qeth_ipaddr *qeth_l3_get_addr_buffer(
+ enum qeth_prot_versions prot)
+{
+ struct qeth_ipaddr *addr;
+
+ addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
+ if (addr == NULL) {
+ return NULL;
+ }
+ addr->type = QETH_IP_TYPE_NORMAL;
+ addr->proto = prot;
+ return addr;
+}
+
+static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
+{
+ struct qeth_ipaddr *iptodo;
+ unsigned long flags;
+
+ QETH_CARD_TEXT(card, 4, "delmc");
+ iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
+ if (!iptodo) {
+ QETH_CARD_TEXT(card, 2, "dmcnomem");
+ return;
+ }
+ iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
+ spin_lock_irqsave(&card->ip_lock, flags);
+ if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
+ kfree(iptodo);
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+}
+
+/*
+ * Add/remove address to/from card's ip list, i.e. try to add or remove
+ * reference to/from an IP address that is already registered on the card.
+ * Returns:
+ * 0 address was on card and its reference count has been adjusted,
+ * but is still > 0, so nothing has to be done
+ * also returns 0 if card was not on card and the todo was to delete
+ * the address -> there is also nothing to be done
+ * 1 address was not on card and the todo is to add it to the card's ip
+ * list
+ * -1 address was on card and its reference count has been decremented
+ * to <= 0 by the todo -> address must be removed from card
+ */
+static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
+ struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
+{
+ struct qeth_ipaddr *addr;
+ int found = 0;
+
+ list_for_each_entry(addr, &card->ip_list, entry) {
+ if ((addr->proto == QETH_PROT_IPV4) &&
+ (todo->proto == QETH_PROT_IPV4) &&
+ (addr->type == todo->type) &&
+ (addr->u.a4.addr == todo->u.a4.addr) &&
+ (addr->u.a4.mask == todo->u.a4.mask)) {
+ found = 1;
+ break;
+ }
+ if ((addr->proto == QETH_PROT_IPV6) &&
+ (todo->proto == QETH_PROT_IPV6) &&
+ (addr->type == todo->type) &&
+ (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
+ (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
+ sizeof(struct in6_addr)) == 0)) {
+ found = 1;
+ break;
+ }
+ }
+ if (found) {
+ addr->users += todo->users;
+ if (addr->users <= 0) {
+ *__addr = addr;
+ return -1;
+ } else {
+ /* for VIPA and RXIP limit refcount to 1 */
+ if (addr->type != QETH_IP_TYPE_NORMAL)
+ addr->users = 1;
+ return 0;
+ }
+ }
+ if (todo->users > 0) {
+ /* for VIPA and RXIP limit refcount to 1 */
+ if (todo->type != QETH_IP_TYPE_NORMAL)
+ todo->users = 1;
+ return 1;
+ } else
+ return 0;
+}
+
+static void __qeth_l3_delete_all_mc(struct qeth_card *card,
+ unsigned long *flags)
+{
+ struct list_head fail_list;
+ struct qeth_ipaddr *addr, *tmp;
+ int rc;
+
+ INIT_LIST_HEAD(&fail_list);
+again:
+ list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
+ if (addr->is_multicast) {
+ list_del(&addr->entry);
+ spin_unlock_irqrestore(&card->ip_lock, *flags);
+ rc = qeth_l3_deregister_addr_entry(card, addr);
+ spin_lock_irqsave(&card->ip_lock, *flags);
+ if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
+ kfree(addr);
+ else
+ list_add_tail(&addr->entry, &fail_list);
+ goto again;
+ }
+ }
+ list_splice(&fail_list, &card->ip_list);
+}
+
+void qeth_l3_set_ip_addr_list(struct qeth_card *card)
+{
+ struct list_head *tbd_list;
+ struct qeth_ipaddr *todo, *addr;
+ unsigned long flags;
+ int rc;
+
+ QETH_CARD_TEXT(card, 2, "sdiplist");
+ QETH_CARD_HEX(card, 2, &card, sizeof(void *));
+
+ if (!qeth_card_hw_is_reachable(card) || card->options.sniffer)
+ return;
+
+ spin_lock_irqsave(&card->ip_lock, flags);
+ tbd_list = card->ip_tbd_list;
+ card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
+ if (!card->ip_tbd_list) {
+ QETH_CARD_TEXT(card, 0, "silnomem");
+ card->ip_tbd_list = tbd_list;
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ return;
+ } else
+ INIT_LIST_HEAD(card->ip_tbd_list);
+
+ while (!list_empty(tbd_list)) {
+ todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
+ list_del(&todo->entry);
+ if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
+ __qeth_l3_delete_all_mc(card, &flags);
+ kfree(todo);
+ continue;
+ }
+ rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
+ if (rc == 0) {
+ /* nothing to be done; only adjusted refcount */
+ kfree(todo);
+ } else if (rc == 1) {
+ /* new entry to be added to on-card list */
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ rc = qeth_l3_register_addr_entry(card, todo);
+ spin_lock_irqsave(&card->ip_lock, flags);
+ if (!rc || (rc == IPA_RC_LAN_OFFLINE))
+ list_add_tail(&todo->entry, &card->ip_list);
+ else
+ kfree(todo);
+ } else if (rc == -1) {
+ /* on-card entry to be removed */
+ list_del_init(&addr->entry);
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ rc = qeth_l3_deregister_addr_entry(card, addr);
+ spin_lock_irqsave(&card->ip_lock, flags);
+ if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
+ kfree(addr);
+ else
+ list_add_tail(&addr->entry, &card->ip_list);
+ kfree(todo);
+ }
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ kfree(tbd_list);
+}
+
+static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
+{
+ struct qeth_ipaddr *addr, *tmp;
+ unsigned long flags;
+
+ QETH_CARD_TEXT(card, 4, "clearip");
+ if (recover && card->options.sniffer)
+ return;
+ spin_lock_irqsave(&card->ip_lock, flags);
+ /* clear todo list */
+ list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
+ list_del(&addr->entry);
+ kfree(addr);
+ }
+
+ while (!list_empty(&card->ip_list)) {
+ addr = list_entry(card->ip_list.next,
+ struct qeth_ipaddr, entry);
+ list_del_init(&addr->entry);
+ if (!recover || addr->is_multicast) {
+ kfree(addr);
+ continue;
+ }
+ list_add_tail(&addr->entry, card->ip_tbd_list);
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+}
+
+static int qeth_l3_address_exists_in_list(struct list_head *list,
+ struct qeth_ipaddr *addr, int same_type)
+{
+ struct qeth_ipaddr *tmp;
+
+ list_for_each_entry(tmp, list, entry) {
+ if ((tmp->proto == QETH_PROT_IPV4) &&
+ (addr->proto == QETH_PROT_IPV4) &&
+ ((same_type && (tmp->type == addr->type)) ||
+ (!same_type && (tmp->type != addr->type))) &&
+ (tmp->u.a4.addr == addr->u.a4.addr))
+ return 1;
+
+ if ((tmp->proto == QETH_PROT_IPV6) &&
+ (addr->proto == QETH_PROT_IPV6) &&
+ ((same_type && (tmp->type == addr->type)) ||
+ (!same_type && (tmp->type != addr->type))) &&
+ (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
+ sizeof(struct in6_addr)) == 0))
+ return 1;
+
+ }
+ return 0;
+}
+
+static int qeth_l3_send_setdelmc(struct qeth_card *card,
+ struct qeth_ipaddr *addr, int ipacmd)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_CARD_TEXT(card, 4, "setdelmc");
+
+ iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
+ if (!iob)
+ return -ENOMEM;
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
+ if (addr->proto == QETH_PROT_IPV6)
+ memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
+ sizeof(struct in6_addr));
+ else
+ memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
+
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+
+ return rc;
+}
+
+static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
+{
+ int i, j;
+ for (i = 0; i < 16; i++) {
+ j = (len) - (i * 8);
+ if (j >= 8)
+ netmask[i] = 0xff;
+ else if (j > 0)
+ netmask[i] = (u8)(0xFF00 >> j);
+ else
+ netmask[i] = 0;
+ }
+}
+
+static int qeth_l3_send_setdelip(struct qeth_card *card,
+ struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+ __u8 netmask[16];
+
+ QETH_CARD_TEXT(card, 4, "setdelip");
+ QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
+
+ iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
+ if (!iob)
+ return -ENOMEM;
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ if (addr->proto == QETH_PROT_IPV6) {
+ memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
+ sizeof(struct in6_addr));
+ qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
+ memcpy(cmd->data.setdelip6.mask, netmask,
+ sizeof(struct in6_addr));
+ cmd->data.setdelip6.flags = flags;
+ } else {
+ memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
+ memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
+ cmd->data.setdelip4.flags = flags;
+ }
+
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+
+ return rc;
+}
+
+static int qeth_l3_send_setrouting(struct qeth_card *card,
+ enum qeth_routing_types type, enum qeth_prot_versions prot)
+{
+ int rc;
+ struct qeth_ipa_cmd *cmd;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_CARD_TEXT(card, 4, "setroutg");
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
+ if (!iob)
+ return -ENOMEM;
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setrtg.type = (type);
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+
+ return rc;
+}
+
+static int qeth_l3_correct_routing_type(struct qeth_card *card,
+ enum qeth_routing_types *type, enum qeth_prot_versions prot)
+{
+ if (card->info.type == QETH_CARD_TYPE_IQD) {
+ switch (*type) {
+ case NO_ROUTER:
+ case PRIMARY_CONNECTOR:
+ case SECONDARY_CONNECTOR:
+ case MULTICAST_ROUTER:
+ return 0;
+ default:
+ goto out_inval;
+ }
+ } else {
+ switch (*type) {
+ case NO_ROUTER:
+ case PRIMARY_ROUTER:
+ case SECONDARY_ROUTER:
+ return 0;
+ case MULTICAST_ROUTER:
+ if (qeth_is_ipafunc_supported(card, prot,
+ IPA_OSA_MC_ROUTER))
+ return 0;
+ default:
+ goto out_inval;
+ }
+ }
+out_inval:
+ *type = NO_ROUTER;
+ return -EINVAL;
+}
+
+int qeth_l3_setrouting_v4(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "setrtg4");
+
+ rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
+ QETH_PROT_IPV4);
+ if (rc)
+ return rc;
+
+ rc = qeth_l3_send_setrouting(card, card->options.route4.type,
+ QETH_PROT_IPV4);
+ if (rc) {
+ card->options.route4.type = NO_ROUTER;
+ QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
+ " on %s. Type set to 'no router'.\n", rc,
+ QETH_CARD_IFNAME(card));
+ }
+ return rc;
+}
+
+int qeth_l3_setrouting_v6(struct qeth_card *card)
+{
+ int rc = 0;
+
+ QETH_CARD_TEXT(card, 3, "setrtg6");
+#ifdef CONFIG_QETH_IPV6
+
+ if (!qeth_is_supported(card, IPA_IPV6))
+ return 0;
+ rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
+ QETH_PROT_IPV6);
+ if (rc)
+ return rc;
+
+ rc = qeth_l3_send_setrouting(card, card->options.route6.type,
+ QETH_PROT_IPV6);
+ if (rc) {
+ card->options.route6.type = NO_ROUTER;
+ QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
+ " on %s. Type set to 'no router'.\n", rc,
+ QETH_CARD_IFNAME(card));
+ }
+#endif
+ return rc;
+}
+
+/*
+ * IP address takeover related functions
+ */
+static void qeth_l3_clear_ipato_list(struct qeth_card *card)
+{
+
+ struct qeth_ipato_entry *ipatoe, *tmp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->ip_lock, flags);
+ list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
+ list_del(&ipatoe->entry);
+ kfree(ipatoe);
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+}
+
+int qeth_l3_add_ipato_entry(struct qeth_card *card,
+ struct qeth_ipato_entry *new)
+{
+ struct qeth_ipato_entry *ipatoe;
+ unsigned long flags;
+ int rc = 0;
+
+ QETH_CARD_TEXT(card, 2, "addipato");
+ spin_lock_irqsave(&card->ip_lock, flags);
+ list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
+ if (ipatoe->proto != new->proto)
+ continue;
+ if (!memcmp(ipatoe->addr, new->addr,
+ (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
+ (ipatoe->mask_bits == new->mask_bits)) {
+ rc = -EEXIST;
+ break;
+ }
+ }
+ if (!rc)
+ list_add_tail(&new->entry, &card->ipato.entries);
+
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ return rc;
+}
+
+void qeth_l3_del_ipato_entry(struct qeth_card *card,
+ enum qeth_prot_versions proto, u8 *addr, int mask_bits)
+{
+ struct qeth_ipato_entry *ipatoe, *tmp;
+ unsigned long flags;
+
+ QETH_CARD_TEXT(card, 2, "delipato");
+ spin_lock_irqsave(&card->ip_lock, flags);
+ list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
+ if (ipatoe->proto != proto)
+ continue;
+ if (!memcmp(ipatoe->addr, addr,
+ (proto == QETH_PROT_IPV4)? 4:16) &&
+ (ipatoe->mask_bits == mask_bits)) {
+ list_del(&ipatoe->entry);
+ kfree(ipatoe);
+ }
+ }
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+}
+
+/*
+ * VIPA related functions
+ */
+int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr)
+{
+ struct qeth_ipaddr *ipaddr;
+ unsigned long flags;
+ int rc = 0;
+
+ 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_irqsave(&card->ip_lock, flags);
+ if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
+ qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
+ rc = -EEXIST;
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ if (rc) {
+ kfree(ipaddr);
+ return rc;
+ }
+ if (!qeth_l3_add_ip(card, ipaddr))
+ kfree(ipaddr);
+ qeth_l3_set_ip_addr_list(card);
+ return rc;
+}
+
+void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr)
+{
+ struct qeth_ipaddr *ipaddr;
+
+ 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;
+ if (!qeth_l3_delete_ip(card, ipaddr))
+ kfree(ipaddr);
+ qeth_l3_set_ip_addr_list(card);
+}
+
+/*
+ * 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;
+ unsigned long flags;
+ int rc = 0;
+
+ 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_irqsave(&card->ip_lock, flags);
+ if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
+ qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
+ rc = -EEXIST;
+ spin_unlock_irqrestore(&card->ip_lock, flags);
+ if (rc) {
+ kfree(ipaddr);
+ return rc;
+ }
+ if (!qeth_l3_add_ip(card, ipaddr))
+ kfree(ipaddr);
+ qeth_l3_set_ip_addr_list(card);
+ return 0;
+}
+
+void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr)
+{
+ struct qeth_ipaddr *ipaddr;
+
+ 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;
+ } else
+ return;
+ if (!qeth_l3_delete_ip(card, ipaddr))
+ kfree(ipaddr);
+ qeth_l3_set_ip_addr_list(card);
+}
+
+static int qeth_l3_register_addr_entry(struct qeth_card *card,
+ struct qeth_ipaddr *addr)
+{
+ char buf[50];
+ int rc = 0;
+ int cnt = 3;
+
+ if (addr->proto == QETH_PROT_IPV4) {
+ QETH_CARD_TEXT(card, 2, "setaddr4");
+ QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
+ } else if (addr->proto == QETH_PROT_IPV6) {
+ QETH_CARD_TEXT(card, 2, "setaddr6");
+ QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
+ QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
+ } else {
+ QETH_CARD_TEXT(card, 2, "setaddr?");
+ QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
+ }
+ do {
+ if (addr->is_multicast)
+ rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
+ else
+ rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
+ addr->set_flags);
+ if (rc)
+ QETH_CARD_TEXT(card, 2, "failed");
+ } while ((--cnt > 0) && rc);
+ if (rc) {
+ QETH_CARD_TEXT(card, 2, "FAILED");
+ qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
+ dev_warn(&card->gdev->dev,
+ "Registering IP address %s failed\n", buf);
+ }
+ return rc;
+}
+
+static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
+ struct qeth_ipaddr *addr)
+{
+ int rc = 0;
+
+ if (addr->proto == QETH_PROT_IPV4) {
+ QETH_CARD_TEXT(card, 2, "deladdr4");
+ QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
+ } else if (addr->proto == QETH_PROT_IPV6) {
+ QETH_CARD_TEXT(card, 2, "deladdr6");
+ QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
+ QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
+ } else {
+ QETH_CARD_TEXT(card, 2, "deladdr?");
+ QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
+ }
+ if (addr->is_multicast)
+ rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
+ else
+ rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
+ addr->del_flags);
+ if (rc)
+ QETH_CARD_TEXT(card, 2, "failed");
+
+ return rc;
+}
+
+static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
+{
+ if (cast_type == RTN_MULTICAST)
+ return QETH_CAST_MULTICAST;
+ if (cast_type == RTN_BROADCAST)
+ return QETH_CAST_BROADCAST;
+ return QETH_CAST_UNICAST;
+}
+
+static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
+{
+ u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
+ if (cast_type == RTN_MULTICAST)
+ return ct | QETH_CAST_MULTICAST;
+ if (cast_type == RTN_ANYCAST)
+ return ct | QETH_CAST_ANYCAST;
+ if (cast_type == RTN_BROADCAST)
+ return ct | QETH_CAST_BROADCAST;
+ return ct | QETH_CAST_UNICAST;
+}
+
+static int qeth_l3_setadapter_parms(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_DBF_TEXT(SETUP, 2, "setadprm");
+
+ if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
+ dev_info(&card->gdev->dev,
+ "set adapter parameters not supported.\n");
+ QETH_DBF_TEXT(SETUP, 2, " notsupp");
+ return 0;
+ }
+ rc = qeth_query_setadapterparms(card);
+ if (rc) {
+ QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
+ "0x%x\n", dev_name(&card->gdev->dev), rc);
+ return rc;
+ }
+ if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
+ rc = qeth_setadpparms_change_macaddr(card);
+ if (rc)
+ dev_warn(&card->gdev->dev, "Reading the adapter MAC"
+ " address failed\n");
+ }
+
+ return rc;
+}
+
+static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
+ struct qeth_reply *reply, unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_CARD_TEXT(card, 4, "defadpcb");
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.return_code == 0) {
+ cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
+ if (cmd->hdr.prot_version == QETH_PROT_IPV4)
+ card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
+ if (cmd->hdr.prot_version == QETH_PROT_IPV6)
+ card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
+ }
+ if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
+ cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
+ card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
+ QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
+ }
+ if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
+ cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
+ card->info.tx_csum_mask =
+ cmd->data.setassparms.data.flags_32bit;
+ QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
+ }
+
+ return 0;
+}
+
+static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
+ struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
+ __u16 len, enum qeth_prot_versions prot)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_CARD_TEXT(card, 4, "getasscm");
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
+
+ if (iob) {
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setassparms.hdr.assist_no = ipa_func;
+ cmd->data.setassparms.hdr.length = 8 + len;
+ cmd->data.setassparms.hdr.command_code = cmd_code;
+ cmd->data.setassparms.hdr.return_code = 0;
+ cmd->data.setassparms.hdr.seq_no = 0;
+ }
+
+ return iob;
+}
+
+static int qeth_l3_send_setassparms(struct qeth_card *card,
+ struct qeth_cmd_buffer *iob, __u16 len, long data,
+ int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
+ unsigned long),
+ void *reply_param)
+{
+ int rc;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_CARD_TEXT(card, 4, "sendassp");
+
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ if (len <= sizeof(__u32))
+ cmd->data.setassparms.data.flags_32bit = (__u32) data;
+ else /* (len > sizeof(__u32)) */
+ memcpy(&cmd->data.setassparms.data, (void *) data, len);
+
+ rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
+ return rc;
+}
+
+#ifdef CONFIG_QETH_IPV6
+static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
+ enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_CARD_TEXT(card, 4, "simassp6");
+ iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
+ 0, QETH_PROT_IPV6);
+ if (!iob)
+ return -ENOMEM;
+ rc = qeth_l3_send_setassparms(card, iob, 0, 0,
+ qeth_l3_default_setassparms_cb, NULL);
+ return rc;
+}
+#endif
+
+static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
+ enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
+{
+ int rc;
+ int length = 0;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_CARD_TEXT(card, 4, "simassp4");
+ if (data)
+ length = sizeof(__u32);
+ iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
+ length, QETH_PROT_IPV4);
+ if (!iob)
+ return -ENOMEM;
+ rc = qeth_l3_send_setassparms(card, iob, length, data,
+ qeth_l3_default_setassparms_cb, NULL);
+ return rc;
+}
+
+static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "ipaarp");
+
+ if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
+ dev_info(&card->gdev->dev,
+ "ARP processing not supported on %s!\n",
+ QETH_CARD_IFNAME(card));
+ return 0;
+ }
+ rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ dev_warn(&card->gdev->dev,
+ "Starting ARP processing support for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ }
+ return rc;
+}
+
+static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "ipaipfrg");
+
+ if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
+ dev_info(&card->gdev->dev,
+ "Hardware IP fragmentation not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+
+ rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ dev_warn(&card->gdev->dev,
+ "Starting IP fragmentation support for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ } else
+ dev_info(&card->gdev->dev,
+ "Hardware IP fragmentation enabled \n");
+ return rc;
+}
+
+static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "stsrcmac");
+
+ if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
+ dev_info(&card->gdev->dev,
+ "Inbound source MAC-address not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+
+ rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
+ IPA_CMD_ASS_START, 0);
+ if (rc)
+ dev_warn(&card->gdev->dev,
+ "Starting source MAC-address support for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ return rc;
+}
+
+static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
+{
+ int rc = 0;
+
+ QETH_CARD_TEXT(card, 3, "strtvlan");
+
+ if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
+ dev_info(&card->gdev->dev,
+ "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+
+ rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ dev_warn(&card->gdev->dev,
+ "Starting VLAN support for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ } else {
+ dev_info(&card->gdev->dev, "VLAN enabled\n");
+ }
+ return rc;
+}
+
+static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "stmcast");
+
+ if (!qeth_is_supported(card, IPA_MULTICASTING)) {
+ dev_info(&card->gdev->dev,
+ "Multicast not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ return -EOPNOTSUPP;
+ }
+
+ rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ dev_warn(&card->gdev->dev,
+ "Starting multicast support for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ } else {
+ dev_info(&card->gdev->dev, "Multicast enabled\n");
+ card->dev->flags |= IFF_MULTICAST;
+ }
+ return rc;
+}
+
+#ifdef CONFIG_QETH_IPV6
+static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "softipv6");
+
+ if (card->info.type == QETH_CARD_TYPE_IQD)
+ goto out;
+
+ rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
+ if (rc) {
+ dev_err(&card->gdev->dev,
+ "Activating IPv6 support for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ return rc;
+ }
+ rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
+ IPA_CMD_ASS_START, 3);
+ if (rc) {
+ dev_err(&card->gdev->dev,
+ "Activating IPv6 support for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ return rc;
+ }
+ rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
+ IPA_CMD_ASS_START);
+ if (rc) {
+ dev_err(&card->gdev->dev,
+ "Activating IPv6 support for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ return rc;
+ }
+ rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
+ IPA_CMD_ASS_START);
+ if (rc) {
+ dev_warn(&card->gdev->dev,
+ "Enabling the passthrough mode for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ return rc;
+ }
+out:
+ dev_info(&card->gdev->dev, "IPV6 enabled\n");
+ return 0;
+}
+#endif
+
+static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
+{
+ int rc = 0;
+
+ QETH_CARD_TEXT(card, 3, "strtipv6");
+
+ if (!qeth_is_supported(card, IPA_IPV6)) {
+ dev_info(&card->gdev->dev,
+ "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
+ return 0;
+ }
+#ifdef CONFIG_QETH_IPV6
+ rc = qeth_l3_softsetup_ipv6(card);
+#endif
+ return rc ;
+}
+
+static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "stbrdcst");
+ card->info.broadcast_capable = 0;
+ if (!qeth_is_supported(card, IPA_FILTERING)) {
+ dev_info(&card->gdev->dev,
+ "Broadcast not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
+ rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
+ "%s failed\n", QETH_CARD_IFNAME(card));
+ goto out;
+ }
+
+ rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
+ IPA_CMD_ASS_CONFIGURE, 1);
+ if (rc) {
+ dev_warn(&card->gdev->dev,
+ "Setting up broadcast filtering for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ goto out;
+ }
+ card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
+ dev_info(&card->gdev->dev, "Broadcast enabled\n");
+ rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
+ IPA_CMD_ASS_ENABLE, 1);
+ if (rc) {
+ dev_warn(&card->gdev->dev, "Setting up broadcast echo "
+ "filtering for %s failed\n", QETH_CARD_IFNAME(card));
+ goto out;
+ }
+ card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
+out:
+ if (card->info.broadcast_capable)
+ card->dev->flags |= IFF_BROADCAST;
+ else
+ card->dev->flags &= ~IFF_BROADCAST;
+ return rc;
+}
+
+static int qeth_l3_send_checksum_command(struct qeth_card *card)
+{
+ int rc;
+
+ rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
+ IPA_CMD_ASS_START, 0);
+ if (rc) {
+ dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
+ "failed, using SW checksumming\n",
+ QETH_CARD_IFNAME(card));
+ return rc;
+ }
+ rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
+ IPA_CMD_ASS_ENABLE,
+ card->info.csum_mask);
+ if (rc) {
+ dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
+ "failed, using SW checksumming\n",
+ QETH_CARD_IFNAME(card));
+ return rc;
+ }
+ return 0;
+}
+
+static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
+{
+ int rc = 0;
+
+ if (on) {
+ rc = qeth_l3_send_checksum_command(card);
+ if (rc)
+ return -EIO;
+ dev_info(&card->gdev->dev,
+ "HW Checksumming (inbound) enabled\n");
+ } else {
+ rc = qeth_l3_send_simple_setassparms(card,
+ IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
+ if (rc)
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
+{
+ QETH_CARD_TEXT(card, 3, "strtcsum");
+
+ if (card->dev->features & NETIF_F_RXCSUM) {
+ rtnl_lock();
+ /* force set_features call */
+ card->dev->features &= ~NETIF_F_RXCSUM;
+ netdev_update_features(card->dev);
+ rtnl_unlock();
+ }
+ return 0;
+}
+
+static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
+{
+ int rc = 0;
+
+ if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
+ return rc;
+ rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
+ IPA_CMD_ASS_START, 0);
+ if (rc)
+ goto err_out;
+ rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
+ IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
+ if (rc)
+ goto err_out;
+ dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
+ return rc;
+err_out:
+ dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
+ "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
+ return rc;
+}
+
+static int qeth_l3_start_ipa_tso(struct qeth_card *card)
+{
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "sttso");
+
+ if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
+ dev_info(&card->gdev->dev,
+ "Outbound TSO not supported on %s\n",
+ QETH_CARD_IFNAME(card));
+ rc = -EOPNOTSUPP;
+ } else {
+ rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
+ IPA_CMD_ASS_START, 0);
+ if (rc)
+ dev_warn(&card->gdev->dev, "Starting outbound TCP "
+ "segmentation offload for %s failed\n",
+ QETH_CARD_IFNAME(card));
+ else
+ dev_info(&card->gdev->dev,
+ "Outbound TSO enabled\n");
+ }
+ if (rc)
+ card->dev->features &= ~NETIF_F_TSO;
+ return rc;
+}
+
+static int qeth_l3_start_ipassists(struct qeth_card *card)
+{
+ QETH_CARD_TEXT(card, 3, "strtipas");
+
+ if (qeth_set_access_ctrl_online(card, 0))
+ return -EIO;
+ qeth_l3_start_ipa_arp_processing(card); /* go on*/
+ qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/
+ qeth_l3_start_ipa_source_mac(card); /* go on*/
+ qeth_l3_start_ipa_vlan(card); /* go on*/
+ qeth_l3_start_ipa_multicast(card); /* go on*/
+ qeth_l3_start_ipa_ipv6(card); /* go on*/
+ qeth_l3_start_ipa_broadcast(card); /* go on*/
+ qeth_l3_start_ipa_checksum(card); /* go on*/
+ qeth_l3_start_ipa_tx_checksum(card);
+ qeth_l3_start_ipa_tso(card); /* go on*/
+ return 0;
+}
+
+static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
+ struct qeth_reply *reply, unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.return_code == 0)
+ memcpy(card->dev->dev_addr,
+ cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
+ else
+ eth_random_addr(card->dev->dev_addr);
+
+ return 0;
+}
+
+static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
+{
+ int rc = 0;
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(SETUP, 2, "hsrmac");
+
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
+ QETH_PROT_IPV6);
+ if (!iob)
+ return -ENOMEM;
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
+ card->info.unique_id;
+
+ rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
+ NULL);
+ return rc;
+}
+
+static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
+ struct qeth_reply *reply, unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.return_code == 0)
+ card->info.unique_id = *((__u16 *)
+ &cmd->data.create_destroy_addr.unique_id[6]);
+ else {
+ card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
+ UNIQUE_ID_NOT_BY_CARD;
+ dev_warn(&card->gdev->dev, "The network adapter failed to "
+ "generate a unique ID\n");
+ }
+ return 0;
+}
+
+static int qeth_l3_get_unique_id(struct qeth_card *card)
+{
+ int rc = 0;
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(SETUP, 2, "guniqeid");
+
+ if (!qeth_is_supported(card, IPA_IPV6)) {
+ card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
+ UNIQUE_ID_NOT_BY_CARD;
+ return 0;
+ }
+
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
+ QETH_PROT_IPV6);
+ if (!iob)
+ return -ENOMEM;
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
+ card->info.unique_id;
+
+ rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
+ return rc;
+}
+
+static int
+qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+ __u16 rc;
+
+ QETH_DBF_TEXT(SETUP, 2, "diastrcb");
+
+ cmd = (struct qeth_ipa_cmd *)data;
+ rc = cmd->hdr.return_code;
+ if (rc)
+ QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
+ switch (cmd->data.diagass.action) {
+ case QETH_DIAGS_CMD_TRACE_QUERY:
+ break;
+ case QETH_DIAGS_CMD_TRACE_DISABLE:
+ switch (rc) {
+ case 0:
+ case IPA_RC_INVALID_SUBCMD:
+ card->info.promisc_mode = SET_PROMISC_MODE_OFF;
+ dev_info(&card->gdev->dev, "The HiperSockets network "
+ "traffic analyzer is deactivated\n");
+ break;
+ default:
+ break;
+ }
+ break;
+ case QETH_DIAGS_CMD_TRACE_ENABLE:
+ switch (rc) {
+ case 0:
+ card->info.promisc_mode = SET_PROMISC_MODE_ON;
+ dev_info(&card->gdev->dev, "The HiperSockets network "
+ "traffic analyzer is activated\n");
+ break;
+ case IPA_RC_HARDWARE_AUTH_ERROR:
+ dev_warn(&card->gdev->dev, "The device is not "
+ "authorized to run as a HiperSockets network "
+ "traffic analyzer\n");
+ break;
+ case IPA_RC_TRACE_ALREADY_ACTIVE:
+ dev_warn(&card->gdev->dev, "A HiperSockets "
+ "network traffic analyzer is already "
+ "active in the HiperSockets LAN\n");
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
+ cmd->data.diagass.action, QETH_CARD_IFNAME(card));
+ }
+
+ return 0;
+}
+
+static int
+qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(SETUP, 2, "diagtrac");
+
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
+ if (!iob)
+ return -ENOMEM;
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.diagass.subcmd_len = 16;
+ cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
+ cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
+ cmd->data.diagass.action = diags_cmd;
+ return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
+}
+
+static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
+ struct net_device *dev)
+{
+ ip_eth_mc_map(ipm, mac);
+}
+
+static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
+{
+ struct qeth_ipaddr *ipm;
+ struct ip_mc_list *im4;
+ char buf[MAX_ADDR_LEN];
+
+ QETH_CARD_TEXT(card, 4, "addmc");
+ for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
+ im4 = rcu_dereference(im4->next_rcu)) {
+ qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
+ ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
+ if (!ipm)
+ continue;
+ ipm->u.a4.addr = im4->multiaddr;
+ memcpy(ipm->mac, buf, OSA_ADDR_LEN);
+ ipm->is_multicast = 1;
+ if (!qeth_l3_add_ip(card, ipm))
+ kfree(ipm);
+ }
+}
+
+/* called with rcu_read_lock */
+static void qeth_l3_add_vlan_mc(struct qeth_card *card)
+{
+ struct in_device *in_dev;
+ u16 vid;
+
+ QETH_CARD_TEXT(card, 4, "addmcvl");
+ if (!qeth_is_supported(card, IPA_FULL_VLAN))
+ return;
+
+ for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
+ struct net_device *netdev;
+
+ netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
+ vid);
+ if (netdev == NULL ||
+ !(netdev->flags & IFF_UP))
+ continue;
+ in_dev = __in_dev_get_rcu(netdev);
+ if (!in_dev)
+ continue;
+ qeth_l3_add_mc(card, in_dev);
+ }
+}
+
+static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
+{
+ struct in_device *in4_dev;
+
+ QETH_CARD_TEXT(card, 4, "chkmcv4");
+ rcu_read_lock();
+ in4_dev = __in_dev_get_rcu(card->dev);
+ if (in4_dev == NULL)
+ goto unlock;
+ qeth_l3_add_mc(card, in4_dev);
+ qeth_l3_add_vlan_mc(card);
+unlock:
+ rcu_read_unlock();
+}
+
+#ifdef CONFIG_QETH_IPV6
+static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
+{
+ struct qeth_ipaddr *ipm;
+ struct ifmcaddr6 *im6;
+ char buf[MAX_ADDR_LEN];
+
+ QETH_CARD_TEXT(card, 4, "addmc6");
+ for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
+ ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
+ ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
+ if (!ipm)
+ continue;
+ ipm->is_multicast = 1;
+ memcpy(ipm->mac, buf, OSA_ADDR_LEN);
+ memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
+ sizeof(struct in6_addr));
+ if (!qeth_l3_add_ip(card, ipm))
+ kfree(ipm);
+ }
+}
+
+/* called with rcu_read_lock */
+static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
+{
+ struct inet6_dev *in_dev;
+ u16 vid;
+
+ QETH_CARD_TEXT(card, 4, "admc6vl");
+ if (!qeth_is_supported(card, IPA_FULL_VLAN))
+ return;
+
+ for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
+ struct net_device *netdev;
+
+ netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
+ vid);
+ if (netdev == NULL ||
+ !(netdev->flags & IFF_UP))
+ continue;
+ in_dev = in6_dev_get(netdev);
+ if (!in_dev)
+ continue;
+ read_lock_bh(&in_dev->lock);
+ qeth_l3_add_mc6(card, in_dev);
+ read_unlock_bh(&in_dev->lock);
+ in6_dev_put(in_dev);
+ }
+}
+
+static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
+{
+ struct inet6_dev *in6_dev;
+
+ QETH_CARD_TEXT(card, 4, "chkmcv6");
+ if (!qeth_is_supported(card, IPA_IPV6))
+ return ;
+ in6_dev = in6_dev_get(card->dev);
+ if (in6_dev == NULL)
+ return;
+ rcu_read_lock();
+ read_lock_bh(&in6_dev->lock);
+ qeth_l3_add_mc6(card, in6_dev);
+ qeth_l3_add_vlan_mc6(card);
+ read_unlock_bh(&in6_dev->lock);
+ rcu_read_unlock();
+ in6_dev_put(in6_dev);
+}
+#endif /* CONFIG_QETH_IPV6 */
+
+static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
+ unsigned short vid)
+{
+ struct in_device *in_dev;
+ struct in_ifaddr *ifa;
+ struct qeth_ipaddr *addr;
+ struct net_device *netdev;
+
+ QETH_CARD_TEXT(card, 4, "frvaddr4");
+
+ netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
+ if (!netdev)
+ return;
+ in_dev = in_dev_get(netdev);
+ if (!in_dev)
+ return;
+ for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
+ addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
+ if (addr) {
+ addr->u.a4.addr = ifa->ifa_address;
+ addr->u.a4.mask = ifa->ifa_mask;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ if (!qeth_l3_delete_ip(card, addr))
+ kfree(addr);
+ }
+ }
+ in_dev_put(in_dev);
+}
+
+static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
+ unsigned short vid)
+{
+#ifdef CONFIG_QETH_IPV6
+ struct inet6_dev *in6_dev;
+ struct inet6_ifaddr *ifa;
+ struct qeth_ipaddr *addr;
+ struct net_device *netdev;
+
+ QETH_CARD_TEXT(card, 4, "frvaddr6");
+
+ netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
+ if (!netdev)
+ return;
+ in6_dev = in6_dev_get(netdev);
+ if (!in6_dev)
+ return;
+ list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
+ addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
+ if (addr) {
+ memcpy(&addr->u.a6.addr, &ifa->addr,
+ sizeof(struct in6_addr));
+ addr->u.a6.pfxlen = ifa->prefix_len;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ if (!qeth_l3_delete_ip(card, addr))
+ kfree(addr);
+ }
+ }
+ in6_dev_put(in6_dev);
+#endif /* CONFIG_QETH_IPV6 */
+}
+
+static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
+ unsigned short vid)
+{
+ rcu_read_lock();
+ qeth_l3_free_vlan_addresses4(card, vid);
+ qeth_l3_free_vlan_addresses6(card, vid);
+ rcu_read_unlock();
+}
+
+static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
+ __be16 proto, u16 vid)
+{
+ struct qeth_card *card = dev->ml_priv;
+
+ set_bit(vid, card->active_vlans);
+ return 0;
+}
+
+static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
+ __be16 proto, u16 vid)
+{
+ struct qeth_card *card = dev->ml_priv;
+ unsigned long flags;
+
+ QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
+ if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
+ QETH_CARD_TEXT(card, 3, "kidREC");
+ return 0;
+ }
+ spin_lock_irqsave(&card->vlanlock, flags);
+ /* unregister IP addresses of vlan device */
+ qeth_l3_free_vlan_addresses(card, vid);
+ clear_bit(vid, card->active_vlans);
+ spin_unlock_irqrestore(&card->vlanlock, flags);
+ qeth_l3_set_multicast_list(card->dev);
+ return 0;
+}
+
+static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
+ struct sk_buff *skb, struct qeth_hdr *hdr,
+ unsigned short *vlan_id)
+{
+ __be16 prot;
+ struct iphdr *ip_hdr;
+ unsigned char tg_addr[MAX_ADDR_LEN];
+ int is_vlan = 0;
+
+ if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
+ prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
+ ETH_P_IP);
+ switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
+ case QETH_CAST_MULTICAST:
+ switch (prot) {
+#ifdef CONFIG_QETH_IPV6
+ case __constant_htons(ETH_P_IPV6):
+ ndisc_mc_map((struct in6_addr *)
+ skb->data + 24,
+ tg_addr, card->dev, 0);
+ break;
+#endif
+ case __constant_htons(ETH_P_IP):
+ ip_hdr = (struct iphdr *)skb->data;
+ ip_eth_mc_map(ip_hdr->daddr, tg_addr);
+ break;
+ default:
+ memcpy(tg_addr, card->dev->broadcast,
+ card->dev->addr_len);
+ }
+ card->stats.multicast++;
+ skb->pkt_type = PACKET_MULTICAST;
+ break;
+ case QETH_CAST_BROADCAST:
+ memcpy(tg_addr, card->dev->broadcast,
+ card->dev->addr_len);
+ card->stats.multicast++;
+ skb->pkt_type = PACKET_BROADCAST;
+ break;
+ case QETH_CAST_UNICAST:
+ case QETH_CAST_ANYCAST:
+ case QETH_CAST_NOCAST:
+ default:
+ if (card->options.sniffer)
+ skb->pkt_type = PACKET_OTHERHOST;
+ else
+ skb->pkt_type = PACKET_HOST;
+ memcpy(tg_addr, card->dev->dev_addr,
+ card->dev->addr_len);
+ }
+ if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
+ card->dev->header_ops->create(skb, card->dev, prot,
+ tg_addr, &hdr->hdr.l3.dest_addr[2],
+ card->dev->addr_len);
+ else
+ card->dev->header_ops->create(skb, card->dev, prot,
+ tg_addr, "FAKELL", card->dev->addr_len);
+ }
+
+ skb->protocol = eth_type_trans(skb, card->dev);
+
+ if (hdr->hdr.l3.ext_flags &
+ (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
+ *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
+ hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
+ is_vlan = 1;
+ }
+
+ if (card->dev->features & NETIF_F_RXCSUM) {
+ if ((hdr->hdr.l3.ext_flags &
+ (QETH_HDR_EXT_CSUM_HDR_REQ |
+ QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
+ (QETH_HDR_EXT_CSUM_HDR_REQ |
+ QETH_HDR_EXT_CSUM_TRANSP_REQ))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ else
+ skb->ip_summed = CHECKSUM_NONE;
+ } else
+ skb->ip_summed = CHECKSUM_NONE;
+
+ return is_vlan;
+}
+
+static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
+ int budget, int *done)
+{
+ int work_done = 0;
+ struct sk_buff *skb;
+ struct qeth_hdr *hdr;
+ __u16 vlan_tag = 0;
+ int is_vlan;
+ unsigned int len;
+ __u16 magic;
+
+ *done = 0;
+ WARN_ON_ONCE(!budget);
+ while (budget) {
+ skb = qeth_core_get_next_skb(card,
+ &card->qdio.in_q->bufs[card->rx.b_index],
+ &card->rx.b_element, &card->rx.e_offset, &hdr);
+ if (!skb) {
+ *done = 1;
+ break;
+ }
+ skb->dev = card->dev;
+ switch (hdr->hdr.l3.id) {
+ case QETH_HEADER_TYPE_LAYER3:
+ magic = *(__u16 *)skb->data;
+ if ((card->info.type == QETH_CARD_TYPE_IQD) &&
+ (magic == ETH_P_AF_IUCV)) {
+ skb->protocol = ETH_P_AF_IUCV;
+ skb->pkt_type = PACKET_HOST;
+ skb->mac_header = NET_SKB_PAD;
+ skb->dev = card->dev;
+ len = skb->len;
+ card->dev->header_ops->create(skb, card->dev, 0,
+ card->dev->dev_addr, "FAKELL",
+ card->dev->addr_len);
+ netif_receive_skb(skb);
+ } else {
+ is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
+ &vlan_tag);
+ len = skb->len;
+ if (is_vlan && !card->options.sniffer)
+ __vlan_hwaccel_put_tag(skb,
+ htons(ETH_P_8021Q), vlan_tag);
+ napi_gro_receive(&card->napi, skb);
+ }
+ break;
+ case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
+ skb->pkt_type = PACKET_HOST;
+ skb->protocol = eth_type_trans(skb, skb->dev);
+ len = skb->len;
+ netif_receive_skb(skb);
+ break;
+ default:
+ dev_kfree_skb_any(skb);
+ QETH_CARD_TEXT(card, 3, "inbunkno");
+ QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
+ continue;
+ }
+ work_done++;
+ budget--;
+ card->stats.rx_packets++;
+ card->stats.rx_bytes += len;
+ }
+ return work_done;
+}
+
+static int qeth_l3_poll(struct napi_struct *napi, int budget)
+{
+ struct qeth_card *card = container_of(napi, struct qeth_card, napi);
+ int work_done = 0;
+ struct qeth_qdio_buffer *buffer;
+ int done;
+ int new_budget = budget;
+
+ if (card->options.performance_stats) {
+ card->perf_stats.inbound_cnt++;
+ card->perf_stats.inbound_start_time = qeth_get_micros();
+ }
+
+ while (1) {
+ if (!card->rx.b_count) {
+ card->rx.qdio_err = 0;
+ card->rx.b_count = qdio_get_next_buffers(
+ card->data.ccwdev, 0, &card->rx.b_index,
+ &card->rx.qdio_err);
+ if (card->rx.b_count <= 0) {
+ card->rx.b_count = 0;
+ break;
+ }
+ card->rx.b_element =
+ &card->qdio.in_q->bufs[card->rx.b_index]
+ .buffer->element[0];
+ card->rx.e_offset = 0;
+ }
+
+ while (card->rx.b_count) {
+ buffer = &card->qdio.in_q->bufs[card->rx.b_index];
+ if (!(card->rx.qdio_err &&
+ qeth_check_qdio_errors(card, buffer->buffer,
+ card->rx.qdio_err, "qinerr")))
+ work_done += qeth_l3_process_inbound_buffer(
+ card, new_budget, &done);
+ else
+ done = 1;
+
+ if (done) {
+ if (card->options.performance_stats)
+ card->perf_stats.bufs_rec++;
+ qeth_put_buffer_pool_entry(card,
+ buffer->pool_entry);
+ qeth_queue_input_buffer(card, card->rx.b_index);
+ card->rx.b_count--;
+ if (card->rx.b_count) {
+ card->rx.b_index =
+ (card->rx.b_index + 1) %
+ QDIO_MAX_BUFFERS_PER_Q;
+ card->rx.b_element =
+ &card->qdio.in_q
+ ->bufs[card->rx.b_index]
+ .buffer->element[0];
+ card->rx.e_offset = 0;
+ }
+ }
+
+ if (work_done >= budget)
+ goto out;
+ else
+ new_budget = budget - work_done;
+ }
+ }
+
+ napi_complete(napi);
+ if (qdio_start_irq(card->data.ccwdev, 0))
+ napi_schedule(&card->napi);
+out:
+ if (card->options.performance_stats)
+ card->perf_stats.inbound_time += qeth_get_micros() -
+ card->perf_stats.inbound_start_time;
+ return work_done;
+}
+
+static int qeth_l3_verify_vlan_dev(struct net_device *dev,
+ struct qeth_card *card)
+{
+ int rc = 0;
+ u16 vid;
+
+ for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
+ struct net_device *netdev;
+
+ rcu_read_lock();
+ netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
+ vid);
+ rcu_read_unlock();
+ if (netdev == dev) {
+ rc = QETH_VLAN_CARD;
+ break;
+ }
+ }
+
+ if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
+ return 0;
+
+ return rc;
+}
+
+static int qeth_l3_verify_dev(struct net_device *dev)
+{
+ struct qeth_card *card;
+ unsigned long flags;
+ int rc = 0;
+
+ read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
+ list_for_each_entry(card, &qeth_core_card_list.list, list) {
+ if (card->dev == dev) {
+ rc = QETH_REAL_CARD;
+ break;
+ }
+ rc = qeth_l3_verify_vlan_dev(dev, card);
+ if (rc)
+ break;
+ }
+ read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
+
+ return rc;
+}
+
+static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
+{
+ struct qeth_card *card = NULL;
+ int rc;
+
+ rc = qeth_l3_verify_dev(dev);
+ if (rc == QETH_REAL_CARD)
+ card = dev->ml_priv;
+ else if (rc == QETH_VLAN_CARD)
+ card = vlan_dev_real_dev(dev)->ml_priv;
+ if (card && card->options.layer2)
+ card = NULL;
+ if (card)
+ QETH_CARD_TEXT_(card, 4, "%d", rc);
+ return card ;
+}
+
+static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
+{
+ int rc = 0;
+
+ QETH_DBF_TEXT(SETUP, 2, "stopcard");
+ QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
+
+ qeth_set_allowed_threads(card, 0, 1);
+ if (card->options.sniffer &&
+ (card->info.promisc_mode == SET_PROMISC_MODE_ON))
+ qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
+ if (card->read.state == CH_STATE_UP &&
+ card->write.state == CH_STATE_UP &&
+ (card->state == CARD_STATE_UP)) {
+ if (recovery_mode)
+ qeth_l3_stop(card->dev);
+ else {
+ rtnl_lock();
+ dev_close(card->dev);
+ rtnl_unlock();
+ }
+ card->state = CARD_STATE_SOFTSETUP;
+ }
+ if (card->state == CARD_STATE_SOFTSETUP) {
+ qeth_l3_clear_ip_list(card, 1);
+ qeth_clear_ipacmd_list(card);
+ card->state = CARD_STATE_HARDSETUP;
+ }
+ if (card->state == CARD_STATE_HARDSETUP) {
+ qeth_qdio_clear_card(card, 0);
+ qeth_clear_qdio_buffers(card);
+ qeth_clear_working_pool_list(card);
+ card->state = CARD_STATE_DOWN;
+ }
+ if (card->state == CARD_STATE_DOWN) {
+ qeth_clear_cmd_buffers(&card->read);
+ qeth_clear_cmd_buffers(&card->write);
+ }
+ return rc;
+}
+
+/*
+ * test for and Switch promiscuous mode (on or off)
+ * either for guestlan or HiperSocket Sniffer
+ */
+static void
+qeth_l3_handle_promisc_mode(struct qeth_card *card)
+{
+ struct net_device *dev = card->dev;
+
+ if (((dev->flags & IFF_PROMISC) &&
+ (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
+ (!(dev->flags & IFF_PROMISC) &&
+ (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
+ return;
+
+ if (card->info.guestlan) { /* Guestlan trace */
+ if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
+ qeth_setadp_promisc_mode(card);
+ } else if (card->options.sniffer && /* HiperSockets trace */
+ qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
+ if (dev->flags & IFF_PROMISC) {
+ QETH_CARD_TEXT(card, 3, "+promisc");
+ qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
+ } else {
+ QETH_CARD_TEXT(card, 3, "-promisc");
+ qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
+ }
+ }
+}
+
+static void qeth_l3_set_multicast_list(struct net_device *dev)
+{
+ struct qeth_card *card = dev->ml_priv;
+
+ QETH_CARD_TEXT(card, 3, "setmulti");
+ if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
+ (card->state != CARD_STATE_UP))
+ return;
+ if (!card->options.sniffer) {
+ qeth_l3_delete_mc_addresses(card);
+ qeth_l3_add_multicast_ipv4(card);
+#ifdef CONFIG_QETH_IPV6
+ qeth_l3_add_multicast_ipv6(card);
+#endif
+ qeth_l3_set_ip_addr_list(card);
+ if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
+ return;
+ }
+ qeth_l3_handle_promisc_mode(card);
+}
+
+static const char *qeth_l3_arp_get_error_cause(int *rc)
+{
+ switch (*rc) {
+ case QETH_IPA_ARP_RC_FAILED:
+ *rc = -EIO;
+ return "operation failed";
+ case QETH_IPA_ARP_RC_NOTSUPP:
+ *rc = -EOPNOTSUPP;
+ return "operation not supported";
+ case QETH_IPA_ARP_RC_OUT_OF_RANGE:
+ *rc = -EINVAL;
+ return "argument out of range";
+ case QETH_IPA_ARP_RC_Q_NOTSUPP:
+ *rc = -EOPNOTSUPP;
+ return "query operation not supported";
+ case QETH_IPA_ARP_RC_Q_NO_DATA:
+ *rc = -ENOENT;
+ return "no query data available";
+ default:
+ return "unknown error";
+ }
+}
+
+static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
+{
+ int tmp;
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "arpstnoe");
+
+ /*
+ * currently GuestLAN only supports the ARP assist function
+ * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
+ * thus we say EOPNOTSUPP for this ARP function
+ */
+ if (card->info.guestlan)
+ return -EOPNOTSUPP;
+ if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
+ return -EOPNOTSUPP;
+ }
+ rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
+ no_entries);
+ if (rc) {
+ tmp = rc;
+ QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
+ "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
+ qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
+ }
+ return rc;
+}
+
+static __u32 get_arp_entry_size(struct qeth_card *card,
+ struct qeth_arp_query_data *qdata,
+ struct qeth_arp_entrytype *type, __u8 strip_entries)
+{
+ __u32 rc;
+ __u8 is_hsi;
+
+ is_hsi = qdata->reply_bits == 5;
+ if (type->ip == QETHARP_IP_ADDR_V4) {
+ QETH_CARD_TEXT(card, 4, "arpev4");
+ if (strip_entries) {
+ rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
+ sizeof(struct qeth_arp_qi_entry7_short);
+ } else {
+ rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
+ sizeof(struct qeth_arp_qi_entry7);
+ }
+ } else if (type->ip == QETHARP_IP_ADDR_V6) {
+ QETH_CARD_TEXT(card, 4, "arpev6");
+ if (strip_entries) {
+ rc = is_hsi ?
+ sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
+ sizeof(struct qeth_arp_qi_entry7_short_ipv6);
+ } else {
+ rc = is_hsi ?
+ sizeof(struct qeth_arp_qi_entry5_ipv6) :
+ sizeof(struct qeth_arp_qi_entry7_ipv6);
+ }
+ } else {
+ QETH_CARD_TEXT(card, 4, "arpinv");
+ rc = 0;
+ }
+
+ return rc;
+}
+
+static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
+{
+ return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
+ (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
+}
+
+static int qeth_l3_arp_query_cb(struct qeth_card *card,
+ struct qeth_reply *reply, unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+ struct qeth_arp_query_data *qdata;
+ struct qeth_arp_query_info *qinfo;
+ int i;
+ int e;
+ int entrybytes_done;
+ int stripped_bytes;
+ __u8 do_strip_entries;
+
+ QETH_CARD_TEXT(card, 3, "arpquecb");
+
+ qinfo = (struct qeth_arp_query_info *) reply->param;
+ cmd = (struct qeth_ipa_cmd *) data;
+ QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
+ if (cmd->hdr.return_code) {
+ QETH_CARD_TEXT(card, 4, "arpcberr");
+ QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
+ return 0;
+ }
+ if (cmd->data.setassparms.hdr.return_code) {
+ cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
+ QETH_CARD_TEXT(card, 4, "setaperr");
+ QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
+ return 0;
+ }
+ qdata = &cmd->data.setassparms.data.query_arp;
+ QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
+
+ do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
+ stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
+ entrybytes_done = 0;
+ for (e = 0; e < qdata->no_entries; ++e) {
+ char *cur_entry;
+ __u32 esize;
+ struct qeth_arp_entrytype *etype;
+
+ cur_entry = &qdata->data + entrybytes_done;
+ etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
+ if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
+ QETH_CARD_TEXT(card, 4, "pmis");
+ QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
+ break;
+ }
+ esize = get_arp_entry_size(card, qdata, etype,
+ do_strip_entries);
+ QETH_CARD_TEXT_(card, 5, "esz%i", esize);
+ if (!esize)
+ break;
+
+ if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
+ QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
+ cmd->hdr.return_code = IPA_RC_ENOMEM;
+ goto out_error;
+ }
+
+ memcpy(qinfo->udata + qinfo->udata_offset,
+ &qdata->data + entrybytes_done + stripped_bytes,
+ esize);
+ entrybytes_done += esize + stripped_bytes;
+ qinfo->udata_offset += esize;
+ ++qinfo->no_entries;
+ }
+ /* check if all replies received ... */
+ if (cmd->data.setassparms.hdr.seq_no <
+ cmd->data.setassparms.hdr.number_of_replies)
+ return 1;
+ QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
+ memcpy(qinfo->udata, &qinfo->no_entries, 4);
+ /* keep STRIP_ENTRIES flag so the user program can distinguish
+ * stripped entries from normal ones */
+ if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
+ qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
+ memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
+ QETH_CARD_TEXT_(card, 4, "rc%i", 0);
+ return 0;
+out_error:
+ i = 0;
+ memcpy(qinfo->udata, &i, 4);
+ return 0;
+}
+
+static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
+ struct qeth_cmd_buffer *iob, int len,
+ int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
+ unsigned long),
+ void *reply_param)
+{
+ QETH_CARD_TEXT(card, 4, "sendarp");
+
+ memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
+ memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
+ &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
+ return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
+ reply_cb, reply_param);
+}
+
+static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
+ enum qeth_prot_versions prot,
+ struct qeth_arp_query_info *qinfo)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+ int tmp;
+ int rc;
+
+ QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
+
+ iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_QUERY_INFO,
+ sizeof(struct qeth_arp_query_data) - sizeof(char),
+ prot);
+ if (!iob)
+ return -ENOMEM;
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
+ cmd->data.setassparms.data.query_arp.reply_bits = 0;
+ cmd->data.setassparms.data.query_arp.no_entries = 0;
+ rc = qeth_l3_send_ipa_arp_cmd(card, iob,
+ QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
+ qeth_l3_arp_query_cb, (void *)qinfo);
+ if (rc) {
+ tmp = rc;
+ QETH_DBF_MESSAGE(2,
+ "Error while querying ARP cache on %s: %s "
+ "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
+ qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
+ }
+
+ return rc;
+}
+
+static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
+{
+ struct qeth_arp_query_info qinfo = {0, };
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "arpquery");
+
+ if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
+ IPA_ARP_PROCESSING)) {
+ QETH_CARD_TEXT(card, 3, "arpqnsup");
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
+ /* get size of userspace buffer and mask_bits -> 6 bytes */
+ if (copy_from_user(&qinfo, udata, 6)) {
+ rc = -EFAULT;
+ goto out;
+ }
+ qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
+ if (!qinfo.udata) {
+ rc = -ENOMEM;
+ goto out;
+ }
+ qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
+ rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
+ if (rc) {
+ if (copy_to_user(udata, qinfo.udata, 4))
+ rc = -EFAULT;
+ goto free_and_out;
+ } else {
+#ifdef CONFIG_QETH_IPV6
+ if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
+ /* fails in case of GuestLAN QDIO mode */
+ qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
+ &qinfo);
+ }
+#endif
+ if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
+ QETH_CARD_TEXT(card, 4, "qactf");
+ rc = -EFAULT;
+ goto free_and_out;
+ }
+ QETH_CARD_TEXT(card, 4, "qacts");
+ }
+free_and_out:
+ kfree(qinfo.udata);
+out:
+ return rc;
+}
+
+static int qeth_l3_arp_add_entry(struct qeth_card *card,
+ struct qeth_arp_cache_entry *entry)
+{
+ struct qeth_cmd_buffer *iob;
+ char buf[16];
+ int tmp;
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "arpadent");
+
+ /*
+ * currently GuestLAN only supports the ARP assist function
+ * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
+ * thus we say EOPNOTSUPP for this ARP function
+ */
+ if (card->info.guestlan)
+ return -EOPNOTSUPP;
+ if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
+ return -EOPNOTSUPP;
+ }
+
+ iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_ADD_ENTRY,
+ sizeof(struct qeth_arp_cache_entry),
+ QETH_PROT_IPV4);
+ if (!iob)
+ return -ENOMEM;
+ rc = qeth_l3_send_setassparms(card, iob,
+ sizeof(struct qeth_arp_cache_entry),
+ (unsigned long) entry,
+ qeth_l3_default_setassparms_cb, NULL);
+ if (rc) {
+ tmp = rc;
+ qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
+ QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
+ "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
+ qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
+ }
+ return rc;
+}
+
+static int qeth_l3_arp_remove_entry(struct qeth_card *card,
+ struct qeth_arp_cache_entry *entry)
+{
+ struct qeth_cmd_buffer *iob;
+ char buf[16] = {0, };
+ int tmp;
+ int rc;
+
+ QETH_CARD_TEXT(card, 3, "arprment");
+
+ /*
+ * currently GuestLAN only supports the ARP assist function
+ * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
+ * thus we say EOPNOTSUPP for this ARP function
+ */
+ if (card->info.guestlan)
+ return -EOPNOTSUPP;
+ if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
+ return -EOPNOTSUPP;
+ }
+ memcpy(buf, entry, 12);
+ iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_REMOVE_ENTRY,
+ 12,
+ QETH_PROT_IPV4);
+ if (!iob)
+ return -ENOMEM;
+ rc = qeth_l3_send_setassparms(card, iob,
+ 12, (unsigned long)buf,
+ qeth_l3_default_setassparms_cb, NULL);
+ if (rc) {
+ tmp = rc;
+ memset(buf, 0, 16);
+ qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
+ QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
+ " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
+ qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
+ }
+ return rc;
+}
+
+static int qeth_l3_arp_flush_cache(struct qeth_card *card)
+{
+ int rc;
+ int tmp;
+
+ QETH_CARD_TEXT(card, 3, "arpflush");
+
+ /*
+ * currently GuestLAN only supports the ARP assist function
+ * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
+ * thus we say EOPNOTSUPP for this ARP function
+ */
+ if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
+ return -EOPNOTSUPP;
+ if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
+ return -EOPNOTSUPP;
+ }
+ rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
+ IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
+ if (rc) {
+ tmp = rc;
+ QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
+ "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
+ qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
+ }
+ return rc;
+}
+
+static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct qeth_card *card = dev->ml_priv;
+ struct qeth_arp_cache_entry arp_entry;
+ struct mii_ioctl_data *mii_data;
+ int rc = 0;
+
+ if (!card)
+ return -ENODEV;
+
+ if (!qeth_card_hw_is_reachable(card))
+ return -ENODEV;
+
+ switch (cmd) {
+ case SIOC_QETH_ARP_SET_NO_ENTRIES:
+ if (!capable(CAP_NET_ADMIN)) {
+ rc = -EPERM;
+ break;
+ }
+ rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
+ break;
+ case SIOC_QETH_ARP_QUERY_INFO:
+ if (!capable(CAP_NET_ADMIN)) {
+ rc = -EPERM;
+ break;
+ }
+ rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
+ break;
+ case SIOC_QETH_ARP_ADD_ENTRY:
+ if (!capable(CAP_NET_ADMIN)) {
+ rc = -EPERM;
+ break;
+ }
+ if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
+ sizeof(struct qeth_arp_cache_entry)))
+ rc = -EFAULT;
+ else
+ rc = qeth_l3_arp_add_entry(card, &arp_entry);
+ break;
+ case SIOC_QETH_ARP_REMOVE_ENTRY:
+ if (!capable(CAP_NET_ADMIN)) {
+ rc = -EPERM;
+ break;
+ }
+ if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
+ sizeof(struct qeth_arp_cache_entry)))
+ rc = -EFAULT;
+ else
+ rc = qeth_l3_arp_remove_entry(card, &arp_entry);
+ break;
+ case SIOC_QETH_ARP_FLUSH_CACHE:
+ if (!capable(CAP_NET_ADMIN)) {
+ rc = -EPERM;
+ break;
+ }
+ rc = qeth_l3_arp_flush_cache(card);
+ break;
+ case SIOC_QETH_ADP_SET_SNMP_CONTROL:
+ rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
+ break;
+ case SIOC_QETH_GET_CARD_TYPE:
+ if ((card->info.type == QETH_CARD_TYPE_OSD ||
+ card->info.type == QETH_CARD_TYPE_OSX) &&
+ !card->info.guestlan)
+ return 1;
+ return 0;
+ break;
+ case SIOCGMIIPHY:
+ mii_data = if_mii(rq);
+ mii_data->phy_id = 0;
+ break;
+ case SIOCGMIIREG:
+ mii_data = if_mii(rq);
+ if (mii_data->phy_id != 0)
+ rc = -EINVAL;
+ else
+ mii_data->val_out = qeth_mdio_read(dev,
+ mii_data->phy_id,
+ mii_data->reg_num);
+ break;
+ case SIOC_QETH_QUERY_OAT:
+ rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
+ break;
+ default:
+ rc = -EOPNOTSUPP;
+ }
+ if (rc)
+ QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
+ return rc;
+}
+
+int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
+{
+ int cast_type = RTN_UNSPEC;
+ struct neighbour *n = NULL;
+ struct dst_entry *dst;
+
+ rcu_read_lock();
+ dst = skb_dst(skb);
+ if (dst)
+ n = dst_neigh_lookup_skb(dst, skb);
+ if (n) {
+ cast_type = n->type;
+ rcu_read_unlock();
+ neigh_release(n);
+ if ((cast_type == RTN_BROADCAST) ||
+ (cast_type == RTN_MULTICAST) ||
+ (cast_type == RTN_ANYCAST))
+ return cast_type;
+ else
+ return RTN_UNSPEC;
+ }
+ rcu_read_unlock();
+
+ /* try something else */
+ if (skb->protocol == ETH_P_IPV6)
+ return (skb_network_header(skb)[24] == 0xff) ?
+ RTN_MULTICAST : 0;
+ else if (skb->protocol == ETH_P_IP)
+ return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
+ RTN_MULTICAST : 0;
+ /* ... */
+ if (!memcmp(skb->data, skb->dev->broadcast, 6))
+ return RTN_BROADCAST;
+ else {
+ u16 hdr_mac;
+
+ hdr_mac = *((u16 *)skb->data);
+ /* tr multicast? */
+ switch (card->info.link_type) {
+ case QETH_LINK_TYPE_HSTR:
+ case QETH_LINK_TYPE_LANE_TR:
+ if ((hdr_mac == QETH_TR_MAC_NC) ||
+ (hdr_mac == QETH_TR_MAC_C))
+ return RTN_MULTICAST;
+ break;
+ /* eth or so multicast? */
+ default:
+ if ((hdr_mac == QETH_ETH_MAC_V4) ||
+ (hdr_mac == QETH_ETH_MAC_V6))
+ return RTN_MULTICAST;
+ }
+ }
+ return cast_type;
+}
+
+static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
+ struct qeth_hdr *hdr, struct sk_buff *skb)
+{
+ char daddr[16];
+ struct af_iucv_trans_hdr *iucv_hdr;
+
+ skb_pull(skb, 14);
+ card->dev->header_ops->create(skb, card->dev, 0,
+ card->dev->dev_addr, card->dev->dev_addr,
+ card->dev->addr_len);
+ skb_pull(skb, 14);
+ iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
+ memset(hdr, 0, sizeof(struct qeth_hdr));
+ hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
+ hdr->hdr.l3.ext_flags = 0;
+ hdr->hdr.l3.length = skb->len;
+ hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
+ memset(daddr, 0, sizeof(daddr));
+ daddr[0] = 0xfe;
+ daddr[1] = 0x80;
+ memcpy(&daddr[8], iucv_hdr->destUserID, 8);
+ memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
+}
+
+static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
+ struct sk_buff *skb, int ipv, int cast_type)
+{
+ struct dst_entry *dst;
+
+ memset(hdr, 0, sizeof(struct qeth_hdr));
+ hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
+ hdr->hdr.l3.ext_flags = 0;
+
+ /*
+ * before we're going to overwrite this location with next hop ip.
+ * v6 uses passthrough, v4 sets the tag in the QDIO header.
+ */
+ if (skb_vlan_tag_present(skb)) {
+ if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
+ hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
+ else
+ hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
+ hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
+ }
+
+ hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
+
+ rcu_read_lock();
+ dst = skb_dst(skb);
+ if (ipv == 4) {
+ struct rtable *rt = (struct rtable *) dst;
+ __be32 *pkey = &ip_hdr(skb)->daddr;
+
+ if (rt->rt_gateway)
+ pkey = &rt->rt_gateway;
+
+ /* IPv4 */
+ hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
+ memset(hdr->hdr.l3.dest_addr, 0, 12);
+ *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
+ } else if (ipv == 6) {
+ struct rt6_info *rt = (struct rt6_info *) dst;
+ struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
+
+ if (!ipv6_addr_any(&rt->rt6i_gateway))
+ pkey = &rt->rt6i_gateway;
+
+ /* IPv6 */
+ hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
+ if (card->info.type == QETH_CARD_TYPE_IQD)
+ hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
+ memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
+ } else {
+ if (!memcmp(skb->data + sizeof(struct qeth_hdr),
+ skb->dev->broadcast, 6)) {
+ /* broadcast? */
+ hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
+ QETH_HDR_PASSTHRU;
+ } else {
+ hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
+ QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
+ QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
+ }
+ }
+ rcu_read_unlock();
+}
+
+static inline void qeth_l3_hdr_csum(struct qeth_card *card,
+ struct qeth_hdr *hdr, struct sk_buff *skb)
+{
+ struct iphdr *iph = ip_hdr(skb);
+
+ /* tcph->check contains already the pseudo hdr checksum
+ * so just set the header flags
+ */
+ if (iph->protocol == IPPROTO_UDP)
+ hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
+ hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
+ QETH_HDR_EXT_CSUM_HDR_REQ;
+ iph->check = 0;
+ if (card->options.performance_stats)
+ card->perf_stats.tx_csum++;
+}
+
+static void qeth_tso_fill_header(struct qeth_card *card,
+ struct qeth_hdr *qhdr, struct sk_buff *skb)
+{
+ struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
+ struct tcphdr *tcph = tcp_hdr(skb);
+ struct iphdr *iph = ip_hdr(skb);
+ struct ipv6hdr *ip6h = ipv6_hdr(skb);
+
+ /*fix header to TSO values ...*/
+ hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
+ hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
+ /*set values which are fix for the first approach ...*/
+ hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
+ hdr->ext.imb_hdr_no = 1;
+ hdr->ext.hdr_type = 1;
+ hdr->ext.hdr_version = 1;
+ hdr->ext.hdr_len = 28;
+ /*insert non-fix values */
+ hdr->ext.mss = skb_shinfo(skb)->gso_size;
+ hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
+ hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
+ sizeof(struct qeth_hdr_tso));
+ tcph->check = 0;
+ if (skb->protocol == ETH_P_IPV6) {
+ ip6h->payload_len = 0;
+ tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
+ 0, IPPROTO_TCP, 0);
+ } else {
+ /*OSA want us to set these values ...*/
+ tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
+ 0, IPPROTO_TCP, 0);
+ iph->tot_len = 0;
+ iph->check = 0;
+ }
+}
+
+static inline int qeth_l3_tso_elements(struct sk_buff *skb)
+{
+ unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
+ tcp_hdr(skb)->doff * 4;
+ int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
+ int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
+
+ elements += qeth_get_elements_for_frags(skb);
+
+ return elements;
+}
+
+static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ int rc;
+ u16 *tag;
+ struct qeth_hdr *hdr = NULL;
+ int elements_needed = 0;
+ int elems;
+ struct qeth_card *card = dev->ml_priv;
+ struct sk_buff *new_skb = NULL;
+ int ipv = qeth_get_ip_version(skb);
+ int cast_type = qeth_l3_get_cast_type(card, skb);
+ struct qeth_qdio_out_q *queue =
+ card->qdio.out_qs[card->qdio.do_prio_queueing
+ || (cast_type && card->info.is_multicast_different) ?
+ qeth_get_priority_queue(card, skb, ipv, cast_type) :
+ card->qdio.default_out_queue];
+ int tx_bytes = skb->len;
+ bool large_send;
+ int data_offset = -1;
+ int nr_frags;
+
+ if (((card->info.type == QETH_CARD_TYPE_IQD) &&
+ (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
+ ((card->options.cq == QETH_CQ_ENABLED) &&
+ (skb->protocol != ETH_P_AF_IUCV)))) ||
+ card->options.sniffer)
+ goto tx_drop;
+
+ if ((card->state != CARD_STATE_UP) || !card->lan_online) {
+ card->stats.tx_carrier_errors++;
+ goto tx_drop;
+ }
+
+ if ((cast_type == RTN_BROADCAST) &&
+ (card->info.broadcast_capable == 0))
+ goto tx_drop;
+
+ if (card->options.performance_stats) {
+ card->perf_stats.outbound_cnt++;
+ card->perf_stats.outbound_start_time = qeth_get_micros();
+ }
+
+ large_send = skb_is_gso(skb);
+
+ if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
+ (skb_shinfo(skb)->nr_frags == 0)) {
+ new_skb = skb;
+ if (new_skb->protocol == ETH_P_AF_IUCV)
+ data_offset = 0;
+ else
+ data_offset = ETH_HLEN;
+ hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
+ if (!hdr)
+ goto tx_drop;
+ elements_needed++;
+ } else {
+ /* create a clone with writeable headroom */
+ new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
+ + VLAN_HLEN);
+ if (!new_skb)
+ goto tx_drop;
+ }
+
+ if (card->info.type == QETH_CARD_TYPE_IQD) {
+ if (data_offset < 0)
+ skb_pull(new_skb, ETH_HLEN);
+ } else {
+ if (ipv == 4) {
+ skb_pull(new_skb, ETH_HLEN);
+ }
+
+ if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
+ skb_push(new_skb, VLAN_HLEN);
+ skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
+ skb_copy_to_linear_data_offset(new_skb, 4,
+ new_skb->data + 8, 4);
+ skb_copy_to_linear_data_offset(new_skb, 8,
+ new_skb->data + 12, 4);
+ tag = (u16 *)(new_skb->data + 12);
+ *tag = __constant_htons(ETH_P_8021Q);
+ *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
+ }
+ }
+
+ netif_stop_queue(dev);
+
+ /* fix hardware limitation: as long as we do not have sbal
+ * chaining we can not send long frag lists
+ */
+ if (large_send) {
+ if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
+ if (skb_linearize(new_skb))
+ goto tx_drop;
+ if (card->options.performance_stats)
+ card->perf_stats.tx_lin++;
+ }
+ }
+
+ if (large_send && (cast_type == RTN_UNSPEC)) {
+ hdr = (struct qeth_hdr *)skb_push(new_skb,
+ sizeof(struct qeth_hdr_tso));
+ memset(hdr, 0, sizeof(struct qeth_hdr_tso));
+ qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
+ qeth_tso_fill_header(card, hdr, new_skb);
+ elements_needed++;
+ } else {
+ if (data_offset < 0) {
+ hdr = (struct qeth_hdr *)skb_push(new_skb,
+ sizeof(struct qeth_hdr));
+ qeth_l3_fill_header(card, hdr, new_skb, ipv,
+ cast_type);
+ } else {
+ if (new_skb->protocol == ETH_P_AF_IUCV)
+ qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
+ else {
+ qeth_l3_fill_header(card, hdr, new_skb, ipv,
+ cast_type);
+ hdr->hdr.l3.length = new_skb->len - data_offset;
+ }
+ }
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ qeth_l3_hdr_csum(card, hdr, new_skb);
+ }
+
+ elems = qeth_get_elements_no(card, new_skb, elements_needed);
+ if (!elems) {
+ if (data_offset >= 0)
+ kmem_cache_free(qeth_core_header_cache, hdr);
+ goto tx_drop;
+ }
+ elements_needed += elems;
+ nr_frags = skb_shinfo(new_skb)->nr_frags;
+
+ if (card->info.type != QETH_CARD_TYPE_IQD) {
+ int len;
+ if (large_send)
+ len = ((unsigned long)tcp_hdr(new_skb) +
+ tcp_hdr(new_skb)->doff * 4) -
+ (unsigned long)new_skb->data;
+ else
+ len = sizeof(struct qeth_hdr_layer3);
+
+ if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
+ goto tx_drop;
+ rc = qeth_do_send_packet(card, queue, new_skb, hdr,
+ elements_needed);
+ } else
+ rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
+ elements_needed, data_offset, 0);
+
+ if (!rc) {
+ card->stats.tx_packets++;
+ card->stats.tx_bytes += tx_bytes;
+ if (new_skb != skb)
+ dev_kfree_skb_any(skb);
+ if (card->options.performance_stats) {
+ if (large_send) {
+ card->perf_stats.large_send_bytes += tx_bytes;
+ card->perf_stats.large_send_cnt++;
+ }
+ if (nr_frags) {
+ card->perf_stats.sg_skbs_sent++;
+ /* nr_frags + skb->data */
+ card->perf_stats.sg_frags_sent += nr_frags + 1;
+ }
+ }
+ rc = NETDEV_TX_OK;
+ } else {
+ if (data_offset >= 0)
+ kmem_cache_free(qeth_core_header_cache, hdr);
+
+ if (rc == -EBUSY) {
+ if (new_skb != skb)
+ dev_kfree_skb_any(new_skb);
+ return NETDEV_TX_BUSY;
+ } else
+ goto tx_drop;
+ }
+
+ netif_wake_queue(dev);
+ if (card->options.performance_stats)
+ card->perf_stats.outbound_time += qeth_get_micros() -
+ card->perf_stats.outbound_start_time;
+ return rc;
+
+tx_drop:
+ card->stats.tx_dropped++;
+ card->stats.tx_errors++;
+ if ((new_skb != skb) && new_skb)
+ dev_kfree_skb_any(new_skb);
+ dev_kfree_skb_any(skb);
+ netif_wake_queue(dev);
+ return NETDEV_TX_OK;
+}
+
+static int __qeth_l3_open(struct net_device *dev)
+{
+ struct qeth_card *card = dev->ml_priv;
+ int rc = 0;
+
+ QETH_CARD_TEXT(card, 4, "qethopen");
+ if (card->state == CARD_STATE_UP)
+ return rc;
+ if (card->state != CARD_STATE_SOFTSETUP)
+ return -ENODEV;
+ card->data.state = CH_STATE_UP;
+ card->state = CARD_STATE_UP;
+ netif_start_queue(dev);
+
+ if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
+ napi_enable(&card->napi);
+ napi_schedule(&card->napi);
+ } else
+ rc = -EIO;
+ return rc;
+}
+
+static int qeth_l3_open(struct net_device *dev)
+{
+ struct qeth_card *card = dev->ml_priv;
+
+ QETH_CARD_TEXT(card, 5, "qethope_");
+ if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
+ QETH_CARD_TEXT(card, 3, "openREC");
+ return -ERESTARTSYS;
+ }
+ return __qeth_l3_open(dev);
+}
+
+static int qeth_l3_stop(struct net_device *dev)
+{
+ struct qeth_card *card = dev->ml_priv;
+
+ QETH_CARD_TEXT(card, 4, "qethstop");
+ netif_tx_disable(dev);
+ if (card->state == CARD_STATE_UP) {
+ card->state = CARD_STATE_SOFTSETUP;
+ napi_disable(&card->napi);
+ }
+ return 0;
+}
+
+static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
+ netdev_features_t features)
+{
+ struct qeth_card *card = dev->ml_priv;
+
+ if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
+ features &= ~NETIF_F_IP_CSUM;
+ if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
+ features &= ~NETIF_F_TSO;
+ if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
+ features &= ~NETIF_F_RXCSUM;
+
+ return features;
+}
+
+static int qeth_l3_set_features(struct net_device *dev,
+ netdev_features_t features)
+{
+ struct qeth_card *card = dev->ml_priv;
+ u32 changed = dev->features ^ features;
+ int err;
+
+ if (!(changed & NETIF_F_RXCSUM))
+ return 0;
+
+ if (card->state == CARD_STATE_DOWN ||
+ card->state == CARD_STATE_RECOVER)
+ return 0;
+
+ err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
+ if (err)
+ dev->features = features ^ NETIF_F_RXCSUM;
+
+ return err;
+}
+
+static const struct ethtool_ops qeth_l3_ethtool_ops = {
+ .get_link = ethtool_op_get_link,
+ .get_strings = qeth_core_get_strings,
+ .get_ethtool_stats = qeth_core_get_ethtool_stats,
+ .get_sset_count = qeth_core_get_sset_count,
+ .get_drvinfo = qeth_core_get_drvinfo,
+ .get_settings = qeth_core_ethtool_get_settings,
+};
+
+/*
+ * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
+ * NOARP on the netdevice is no option because it also turns off neighbor
+ * solicitation. For IPv4 we install a neighbor_setup function. We don't want
+ * arp resolution but we want the hard header (packet socket will work
+ * e.g. tcpdump)
+ */
+static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
+{
+ n->nud_state = NUD_NOARP;
+ memcpy(n->ha, "FAKELL", 6);
+ n->output = n->ops->connected_output;
+ return 0;
+}
+
+static int
+qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
+{
+ if (np->tbl->family == AF_INET)
+ np->neigh_setup = qeth_l3_neigh_setup_noarp;
+
+ return 0;
+}
+
+static const struct net_device_ops qeth_l3_netdev_ops = {
+ .ndo_open = qeth_l3_open,
+ .ndo_stop = qeth_l3_stop,
+ .ndo_get_stats = qeth_get_stats,
+ .ndo_start_xmit = qeth_l3_hard_start_xmit,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_rx_mode = qeth_l3_set_multicast_list,
+ .ndo_do_ioctl = qeth_l3_do_ioctl,
+ .ndo_change_mtu = qeth_change_mtu,
+ .ndo_fix_features = qeth_l3_fix_features,
+ .ndo_set_features = qeth_l3_set_features,
+ .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
+ .ndo_tx_timeout = qeth_tx_timeout,
+};
+
+static const struct net_device_ops qeth_l3_osa_netdev_ops = {
+ .ndo_open = qeth_l3_open,
+ .ndo_stop = qeth_l3_stop,
+ .ndo_get_stats = qeth_get_stats,
+ .ndo_start_xmit = qeth_l3_hard_start_xmit,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_rx_mode = qeth_l3_set_multicast_list,
+ .ndo_do_ioctl = qeth_l3_do_ioctl,
+ .ndo_change_mtu = qeth_change_mtu,
+ .ndo_fix_features = qeth_l3_fix_features,
+ .ndo_set_features = qeth_l3_set_features,
+ .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid,
+ .ndo_tx_timeout = qeth_tx_timeout,
+ .ndo_neigh_setup = qeth_l3_neigh_setup,
+};
+
+static int qeth_l3_setup_netdev(struct qeth_card *card)
+{
+ int rc;
+
+ if (card->info.type == QETH_CARD_TYPE_OSD ||
+ card->info.type == QETH_CARD_TYPE_OSX) {
+ if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
+ (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
+ pr_info("qeth_l3: ignoring TR device\n");
+ return -ENODEV;
+ } else {
+ card->dev = alloc_etherdev(0);
+ if (!card->dev)
+ return -ENODEV;
+ card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
+
+ /*IPv6 address autoconfiguration stuff*/
+ qeth_l3_get_unique_id(card);
+ if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
+ card->dev->dev_id = card->info.unique_id &
+ 0xffff;
+ if (!card->info.guestlan) {
+ card->dev->hw_features = NETIF_F_SG |
+ NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
+ NETIF_F_TSO;
+ card->dev->features = NETIF_F_RXCSUM;
+ }
+ }
+ } else if (card->info.type == QETH_CARD_TYPE_IQD) {
+ card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
+ ether_setup);
+ if (!card->dev)
+ return -ENODEV;
+ card->dev->flags |= IFF_NOARP;
+ card->dev->netdev_ops = &qeth_l3_netdev_ops;
+ rc = qeth_l3_iqd_read_initial_mac(card);
+ if (rc)
+ return rc;
+ if (card->options.hsuid[0])
+ memcpy(card->dev->perm_addr, card->options.hsuid, 9);
+ } else
+ return -ENODEV;
+
+ card->dev->ml_priv = card;
+ card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
+ card->dev->mtu = card->info.initial_mtu;
+ card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
+ card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
+ NETIF_F_HW_VLAN_CTAG_RX |
+ NETIF_F_HW_VLAN_CTAG_FILTER;
+ netif_keep_dst(card->dev);
+ card->dev->gso_max_size = 15 * PAGE_SIZE;
+
+ SET_NETDEV_DEV(card->dev, &card->gdev->dev);
+ netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
+ return register_netdev(card->dev);
+}
+
+static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
+{
+ struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+
+ qeth_l3_create_device_attributes(&gdev->dev);
+ card->options.layer2 = 0;
+ card->info.hwtrap = 0;
+ return 0;
+}
+
+static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
+{
+ struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
+
+ qeth_l3_remove_device_attributes(&cgdev->dev);
+
+ qeth_set_allowed_threads(card, 0, 1);
+ wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
+
+ if (cgdev->state == CCWGROUP_ONLINE)
+ qeth_l3_set_offline(cgdev);
+
+ if (card->dev) {
+ unregister_netdev(card->dev);
+ card->dev = NULL;
+ }
+
+ qeth_l3_clear_ip_list(card, 0);
+ qeth_l3_clear_ipato_list(card);
+ return;
+}
+
+static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
+{
+ struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+ int rc = 0;
+ enum qeth_card_states recover_flag;
+
+ mutex_lock(&card->discipline_mutex);
+ mutex_lock(&card->conf_mutex);
+ QETH_DBF_TEXT(SETUP, 2, "setonlin");
+ QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
+
+ recover_flag = card->state;
+ rc = qeth_core_hardsetup_card(card);
+ if (rc) {
+ QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
+ rc = -ENODEV;
+ goto out_remove;
+ }
+
+ if (!card->dev && qeth_l3_setup_netdev(card)) {
+ rc = -ENODEV;
+ goto out_remove;
+ }
+
+ if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
+ if (card->info.hwtrap &&
+ qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
+ card->info.hwtrap = 0;
+ } else
+ card->info.hwtrap = 0;
+
+ card->state = CARD_STATE_HARDSETUP;
+ memset(&card->rx, 0, sizeof(struct qeth_rx));
+ qeth_print_status_message(card);
+
+ /* softsetup */
+ QETH_DBF_TEXT(SETUP, 2, "softsetp");
+
+ rc = qeth_send_startlan(card);
+ if (rc) {
+ QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
+ if (rc == 0xe080) {
+ dev_warn(&card->gdev->dev,
+ "The LAN is offline\n");
+ card->lan_online = 0;
+ goto contin;
+ }
+ rc = -ENODEV;
+ goto out_remove;
+ } else
+ card->lan_online = 1;
+
+contin:
+ rc = qeth_l3_setadapter_parms(card);
+ if (rc)
+ QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
+ if (!card->options.sniffer) {
+ rc = qeth_l3_start_ipassists(card);
+ if (rc) {
+ QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
+ goto out_remove;
+ }
+ rc = qeth_l3_setrouting_v4(card);
+ if (rc)
+ QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
+ rc = qeth_l3_setrouting_v6(card);
+ if (rc)
+ QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
+ }
+ netif_tx_disable(card->dev);
+
+ rc = qeth_init_qdio_queues(card);
+ if (rc) {
+ QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
+ rc = -ENODEV;
+ goto out_remove;
+ }
+ card->state = CARD_STATE_SOFTSETUP;
+
+ qeth_set_allowed_threads(card, 0xffffffff, 0);
+ qeth_l3_set_ip_addr_list(card);
+ if (card->lan_online)
+ netif_carrier_on(card->dev);
+ else
+ netif_carrier_off(card->dev);
+ if (recover_flag == CARD_STATE_RECOVER) {
+ rtnl_lock();
+ if (recovery_mode)
+ __qeth_l3_open(card->dev);
+ else
+ dev_open(card->dev);
+ qeth_l3_set_multicast_list(card->dev);
+ rtnl_unlock();
+ }
+ qeth_trace_features(card);
+ /* let user_space know that device is online */
+ kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
+ mutex_unlock(&card->conf_mutex);
+ mutex_unlock(&card->discipline_mutex);
+ return 0;
+out_remove:
+ qeth_l3_stop_card(card, 0);
+ ccw_device_set_offline(CARD_DDEV(card));
+ ccw_device_set_offline(CARD_WDEV(card));
+ ccw_device_set_offline(CARD_RDEV(card));
+ qdio_free(CARD_DDEV(card));
+ if (recover_flag == CARD_STATE_RECOVER)
+ card->state = CARD_STATE_RECOVER;
+ else
+ card->state = CARD_STATE_DOWN;
+ mutex_unlock(&card->conf_mutex);
+ mutex_unlock(&card->discipline_mutex);
+ return rc;
+}
+
+static int qeth_l3_set_online(struct ccwgroup_device *gdev)
+{
+ return __qeth_l3_set_online(gdev, 0);
+}
+
+static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
+ int recovery_mode)
+{
+ struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
+ int rc = 0, rc2 = 0, rc3 = 0;
+ enum qeth_card_states recover_flag;
+
+ mutex_lock(&card->discipline_mutex);
+ mutex_lock(&card->conf_mutex);
+ QETH_DBF_TEXT(SETUP, 3, "setoffl");
+ QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
+
+ if (card->dev && netif_carrier_ok(card->dev))
+ netif_carrier_off(card->dev);
+ recover_flag = card->state;
+ if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
+ qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
+ card->info.hwtrap = 1;
+ }
+ qeth_l3_stop_card(card, recovery_mode);
+ if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
+ rtnl_lock();
+ call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
+ rtnl_unlock();
+ }
+ rc = ccw_device_set_offline(CARD_DDEV(card));
+ rc2 = ccw_device_set_offline(CARD_WDEV(card));
+ rc3 = ccw_device_set_offline(CARD_RDEV(card));
+ if (!rc)
+ rc = (rc2) ? rc2 : rc3;
+ if (rc)
+ QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
+ qdio_free(CARD_DDEV(card));
+ if (recover_flag == CARD_STATE_UP)
+ card->state = CARD_STATE_RECOVER;
+ /* let user_space know that device is offline */
+ kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
+ mutex_unlock(&card->conf_mutex);
+ mutex_unlock(&card->discipline_mutex);
+ return 0;
+}
+
+static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
+{
+ return __qeth_l3_set_offline(cgdev, 0);
+}
+
+static int qeth_l3_recover(void *ptr)
+{
+ struct qeth_card *card;
+ int rc = 0;
+
+ card = (struct qeth_card *) ptr;
+ QETH_CARD_TEXT(card, 2, "recover1");
+ QETH_CARD_HEX(card, 2, &card, sizeof(void *));
+ if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
+ return 0;
+ QETH_CARD_TEXT(card, 2, "recover2");
+ dev_warn(&card->gdev->dev,
+ "A recovery process has been started for the device\n");
+ qeth_set_recovery_task(card);
+ __qeth_l3_set_offline(card->gdev, 1);
+ rc = __qeth_l3_set_online(card->gdev, 1);
+ if (!rc)
+ dev_info(&card->gdev->dev,
+ "Device successfully recovered!\n");
+ else {
+ qeth_close_dev(card);
+ dev_warn(&card->gdev->dev, "The qeth device driver "
+ "failed to recover an error on the device\n");
+ }
+ qeth_clear_recovery_task(card);
+ qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
+ qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
+ return 0;
+}
+
+static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
+{
+ struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+ qeth_set_allowed_threads(card, 0, 1);
+ if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
+ qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
+ qeth_qdio_clear_card(card, 0);
+ qeth_clear_qdio_buffers(card);
+ qdio_free(CARD_DDEV(card));
+}
+
+static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
+{
+ struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+
+ if (card->dev)
+ netif_device_detach(card->dev);
+ qeth_set_allowed_threads(card, 0, 1);
+ wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
+ if (gdev->state == CCWGROUP_OFFLINE)
+ return 0;
+ if (card->state == CARD_STATE_UP) {
+ if (card->info.hwtrap)
+ qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
+ __qeth_l3_set_offline(card->gdev, 1);
+ } else
+ __qeth_l3_set_offline(card->gdev, 0);
+ return 0;
+}
+
+static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
+{
+ struct qeth_card *card = dev_get_drvdata(&gdev->dev);
+ int rc = 0;
+
+ if (gdev->state == CCWGROUP_OFFLINE)
+ goto out;
+
+ if (card->state == CARD_STATE_RECOVER) {
+ rc = __qeth_l3_set_online(card->gdev, 1);
+ if (rc) {
+ rtnl_lock();
+ dev_close(card->dev);
+ rtnl_unlock();
+ }
+ } else
+ rc = __qeth_l3_set_online(card->gdev, 0);
+out:
+ qeth_set_allowed_threads(card, 0xffffffff, 0);
+ if (card->dev)
+ netif_device_attach(card->dev);
+ if (rc)
+ dev_warn(&card->gdev->dev, "The qeth device driver "
+ "failed to recover an error on the device\n");
+ return rc;
+}
+
+/* Returns zero if the command is successfully "consumed" */
+static int qeth_l3_control_event(struct qeth_card *card,
+ struct qeth_ipa_cmd *cmd)
+{
+ return 1;
+}
+
+struct qeth_discipline qeth_l3_discipline = {
+ .start_poll = qeth_qdio_start_poll,
+ .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
+ .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
+ .recover = qeth_l3_recover,
+ .setup = qeth_l3_probe_device,
+ .remove = qeth_l3_remove_device,
+ .set_online = qeth_l3_set_online,
+ .set_offline = qeth_l3_set_offline,
+ .shutdown = qeth_l3_shutdown,
+ .freeze = qeth_l3_pm_suspend,
+ .thaw = qeth_l3_pm_resume,
+ .restore = qeth_l3_pm_resume,
+ .control_event_handler = qeth_l3_control_event,
+};
+EXPORT_SYMBOL_GPL(qeth_l3_discipline);
+
+static int qeth_l3_ip_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
+ struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
+ struct qeth_ipaddr *addr;
+ struct qeth_card *card;
+
+ if (dev_net(dev) != &init_net)
+ return NOTIFY_DONE;
+
+ card = qeth_l3_get_card_from_dev(dev);
+ if (!card)
+ return NOTIFY_DONE;
+ QETH_CARD_TEXT(card, 3, "ipevent");
+
+ addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
+ if (addr != NULL) {
+ addr->u.a4.addr = ifa->ifa_address;
+ addr->u.a4.mask = ifa->ifa_mask;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ } else
+ goto out;
+
+ switch (event) {
+ case NETDEV_UP:
+ if (!qeth_l3_add_ip(card, addr))
+ kfree(addr);
+ break;
+ case NETDEV_DOWN:
+ if (!qeth_l3_delete_ip(card, addr))
+ kfree(addr);
+ break;
+ default:
+ break;
+ }
+ qeth_l3_set_ip_addr_list(card);
+out:
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block qeth_l3_ip_notifier = {
+ qeth_l3_ip_event,
+ NULL,
+};
+
+#ifdef CONFIG_QETH_IPV6
+/**
+ * IPv6 event handler
+ */
+static int qeth_l3_ip6_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
+ struct net_device *dev = (struct net_device *)ifa->idev->dev;
+ struct qeth_ipaddr *addr;
+ struct qeth_card *card;
+
+ card = qeth_l3_get_card_from_dev(dev);
+ if (!card)
+ return NOTIFY_DONE;
+ QETH_CARD_TEXT(card, 3, "ip6event");
+ if (!qeth_is_supported(card, IPA_IPV6))
+ return NOTIFY_DONE;
+
+ addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
+ if (addr != NULL) {
+ memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
+ addr->u.a6.pfxlen = ifa->prefix_len;
+ addr->type = QETH_IP_TYPE_NORMAL;
+ } else
+ goto out;
+
+ switch (event) {
+ case NETDEV_UP:
+ if (!qeth_l3_add_ip(card, addr))
+ kfree(addr);
+ break;
+ case NETDEV_DOWN:
+ if (!qeth_l3_delete_ip(card, addr))
+ kfree(addr);
+ break;
+ default:
+ break;
+ }
+ qeth_l3_set_ip_addr_list(card);
+out:
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block qeth_l3_ip6_notifier = {
+ qeth_l3_ip6_event,
+ NULL,
+};
+#endif
+
+static int qeth_l3_register_notifiers(void)
+{
+ int rc;
+
+ QETH_DBF_TEXT(SETUP, 5, "regnotif");
+ rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
+ if (rc)
+ return rc;
+#ifdef CONFIG_QETH_IPV6
+ rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
+ if (rc) {
+ unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
+ return rc;
+ }
+#else
+ pr_warning("There is no IPv6 support for the layer 3 discipline\n");
+#endif
+ return 0;
+}
+
+static void qeth_l3_unregister_notifiers(void)
+{
+
+ QETH_DBF_TEXT(SETUP, 5, "unregnot");
+ WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
+#ifdef CONFIG_QETH_IPV6
+ WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
+#endif /* QETH_IPV6 */
+}
+
+static int __init qeth_l3_init(void)
+{
+ int rc = 0;
+
+ pr_info("register layer 3 discipline\n");
+ rc = qeth_l3_register_notifiers();
+ return rc;
+}
+
+static void __exit qeth_l3_exit(void)
+{
+ qeth_l3_unregister_notifiers();
+ pr_info("unregister layer 3 discipline\n");
+}
+
+module_init(qeth_l3_init);
+module_exit(qeth_l3_exit);
+MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
+MODULE_DESCRIPTION("qeth layer 3 discipline");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff