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kernel / pub / scm / linux / kernel / git / plagnioj / linux-fbdev / f722406faae2d073cc1d01063d1123c35425939e / . / drivers / s390 / net / qeth_l3_main.c
blob: c1b0b2761f8dce6e0d3ad709902eeb19a925beba [file] [log] [blame]
/*
* 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;
}
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]);
}
int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
{
int count = 0, rc = 0;
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;
}
void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
{
sprintf(buf, "%pI6", addr);
}
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 ((card->state != CARD_STATE_UP &&
card->state != CARD_STATE_SOFTSETUP) || 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);
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);
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);
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);
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);
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);
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);
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);
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);
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(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(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(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(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(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);
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);
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);
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 ((card->state != CARD_STATE_UP) &&
(card->state != CARD_STATE_SOFTSETUP))
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 (vlan_tx_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 = vlan_tx_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