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2256 lines
56 KiB
2256 lines
56 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright IBM Corp. 2007, 2009 |
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* Author(s): Utz Bacher <[email protected]>, |
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* Frank Pavlic <[email protected]>, |
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* Thomas Spatzier <[email protected]>, |
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* Frank Blaschka <[email protected]> |
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*/ |
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|
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#define KMSG_COMPONENT "qeth" |
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
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|
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#include <linux/module.h> |
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#include <linux/moduleparam.h> |
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#include <linux/bitops.h> |
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#include <linux/string.h> |
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#include <linux/errno.h> |
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#include <linux/kernel.h> |
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#include <linux/etherdevice.h> |
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#include <linux/ip.h> |
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#include <linux/in.h> |
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#include <linux/ipv6.h> |
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#include <linux/inetdevice.h> |
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#include <linux/igmp.h> |
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#include <linux/slab.h> |
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#include <linux/if_ether.h> |
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#include <linux/if_vlan.h> |
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#include <linux/skbuff.h> |
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|
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#include <net/ip.h> |
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#include <net/arp.h> |
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#include <net/route.h> |
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#include <net/ipv6.h> |
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#include <net/ip6_route.h> |
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#include <net/iucv/af_iucv.h> |
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#include <linux/hashtable.h> |
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|
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#include "qeth_l3.h" |
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|
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static int qeth_l3_register_addr_entry(struct qeth_card *, |
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struct qeth_ipaddr *); |
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static int qeth_l3_deregister_addr_entry(struct qeth_card *, |
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struct qeth_ipaddr *); |
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|
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int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr, |
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char *buf) |
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{ |
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if (proto == QETH_PROT_IPV4) |
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return sprintf(buf, "%pI4", addr); |
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else |
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return sprintf(buf, "%pI6", addr); |
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} |
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|
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static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card, |
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struct qeth_ipaddr *query) |
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{ |
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u32 key = qeth_l3_ipaddr_hash(query); |
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struct qeth_ipaddr *addr; |
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|
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if (query->is_multicast) { |
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hash_for_each_possible(card->rx_mode_addrs, addr, hnode, key) |
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if (qeth_l3_addr_match_ip(addr, query)) |
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return addr; |
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} else { |
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hash_for_each_possible(card->ip_htable, addr, hnode, key) |
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if (qeth_l3_addr_match_ip(addr, query)) |
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return addr; |
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} |
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return NULL; |
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} |
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|
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static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) |
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{ |
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int i, j; |
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u8 octet; |
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|
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for (i = 0; i < len; ++i) { |
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octet = addr[i]; |
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for (j = 7; j >= 0; --j) { |
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bits[i*8 + j] = octet & 1; |
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octet >>= 1; |
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} |
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} |
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} |
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|
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static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, |
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struct qeth_ipaddr *addr) |
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{ |
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struct qeth_ipato_entry *ipatoe; |
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u8 addr_bits[128] = {0, }; |
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u8 ipatoe_bits[128] = {0, }; |
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int rc = 0; |
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|
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if (!card->ipato.enabled) |
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return false; |
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if (addr->type != QETH_IP_TYPE_NORMAL) |
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return false; |
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|
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qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, |
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(addr->proto == QETH_PROT_IPV4) ? 4 : 16); |
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list_for_each_entry(ipatoe, &card->ipato.entries, entry) { |
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if (addr->proto != ipatoe->proto) |
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continue; |
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qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, |
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(ipatoe->proto == QETH_PROT_IPV4) ? |
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4 : 16); |
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rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits); |
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if (rc) |
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break; |
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} |
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/* invert? */ |
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if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) |
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rc = !rc; |
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else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) |
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rc = !rc; |
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|
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return rc; |
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} |
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|
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static int qeth_l3_delete_ip(struct qeth_card *card, |
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struct qeth_ipaddr *tmp_addr) |
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{ |
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int rc = 0; |
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struct qeth_ipaddr *addr; |
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|
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if (tmp_addr->type == QETH_IP_TYPE_RXIP) |
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QETH_CARD_TEXT(card, 2, "delrxip"); |
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else if (tmp_addr->type == QETH_IP_TYPE_VIPA) |
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QETH_CARD_TEXT(card, 2, "delvipa"); |
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else |
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QETH_CARD_TEXT(card, 2, "delip"); |
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|
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if (tmp_addr->proto == QETH_PROT_IPV4) |
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QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); |
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else { |
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QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); |
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QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); |
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} |
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|
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addr = qeth_l3_find_addr_by_ip(card, tmp_addr); |
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if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr)) |
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return -ENOENT; |
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|
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addr->ref_counter--; |
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if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) |
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return rc; |
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|
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if (qeth_card_hw_is_reachable(card)) |
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rc = qeth_l3_deregister_addr_entry(card, addr); |
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|
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hash_del(&addr->hnode); |
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kfree(addr); |
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|
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return rc; |
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} |
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|
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static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) |
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{ |
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int rc = 0; |
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struct qeth_ipaddr *addr; |
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char buf[40]; |
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|
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if (tmp_addr->type == QETH_IP_TYPE_RXIP) |
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QETH_CARD_TEXT(card, 2, "addrxip"); |
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else if (tmp_addr->type == QETH_IP_TYPE_VIPA) |
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QETH_CARD_TEXT(card, 2, "addvipa"); |
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else |
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QETH_CARD_TEXT(card, 2, "addip"); |
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|
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if (tmp_addr->proto == QETH_PROT_IPV4) |
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QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); |
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else { |
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QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); |
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QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); |
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} |
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|
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addr = qeth_l3_find_addr_by_ip(card, tmp_addr); |
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if (addr) { |
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if (tmp_addr->type != QETH_IP_TYPE_NORMAL) |
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return -EADDRINUSE; |
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if (qeth_l3_addr_match_all(addr, tmp_addr)) { |
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addr->ref_counter++; |
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return 0; |
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} |
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qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u, |
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buf); |
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dev_warn(&card->gdev->dev, |
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"Registering IP address %s failed\n", buf); |
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return -EADDRINUSE; |
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} else { |
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addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL); |
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if (!addr) |
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return -ENOMEM; |
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|
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if (qeth_l3_is_addr_covered_by_ipato(card, addr)) { |
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QETH_CARD_TEXT(card, 2, "tkovaddr"); |
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addr->ipato = 1; |
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} |
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hash_add(card->ip_htable, &addr->hnode, |
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qeth_l3_ipaddr_hash(addr)); |
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|
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if (!qeth_card_hw_is_reachable(card)) { |
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addr->disp_flag = QETH_DISP_ADDR_ADD; |
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return 0; |
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} |
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|
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rc = qeth_l3_register_addr_entry(card, addr); |
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|
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if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) { |
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addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; |
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} else { |
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hash_del(&addr->hnode); |
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kfree(addr); |
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} |
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} |
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return rc; |
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} |
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|
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static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr, |
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bool add) |
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{ |
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int rc; |
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|
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mutex_lock(&card->ip_lock); |
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rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr); |
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mutex_unlock(&card->ip_lock); |
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|
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return rc; |
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} |
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|
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static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card) |
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{ |
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struct qeth_ipaddr *addr; |
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struct hlist_node *tmp; |
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int i; |
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|
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hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) { |
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hash_del(&addr->hnode); |
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kfree(addr); |
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} |
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} |
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|
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static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) |
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{ |
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struct qeth_ipaddr *addr; |
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struct hlist_node *tmp; |
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int i; |
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|
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QETH_CARD_TEXT(card, 4, "clearip"); |
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|
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mutex_lock(&card->ip_lock); |
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|
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hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { |
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if (!recover) { |
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hash_del(&addr->hnode); |
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kfree(addr); |
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continue; |
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} |
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addr->disp_flag = QETH_DISP_ADDR_ADD; |
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} |
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|
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mutex_unlock(&card->ip_lock); |
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} |
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|
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static void qeth_l3_recover_ip(struct qeth_card *card) |
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{ |
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struct qeth_ipaddr *addr; |
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struct hlist_node *tmp; |
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int i; |
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int rc; |
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|
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QETH_CARD_TEXT(card, 4, "recovrip"); |
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|
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mutex_lock(&card->ip_lock); |
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|
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hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { |
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if (addr->disp_flag == QETH_DISP_ADDR_ADD) { |
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rc = qeth_l3_register_addr_entry(card, addr); |
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|
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if (!rc) { |
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addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; |
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} else { |
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hash_del(&addr->hnode); |
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kfree(addr); |
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} |
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} |
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} |
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|
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mutex_unlock(&card->ip_lock); |
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} |
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|
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static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply, |
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unsigned long data) |
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{ |
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struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; |
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|
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switch (cmd->hdr.return_code) { |
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case IPA_RC_SUCCESS: |
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return 0; |
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case IPA_RC_DUPLICATE_IP_ADDRESS: |
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return -EADDRINUSE; |
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case IPA_RC_MC_ADDR_NOT_FOUND: |
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return -ENOENT; |
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case IPA_RC_LAN_OFFLINE: |
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return -ENETDOWN; |
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default: |
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return -EIO; |
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} |
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} |
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|
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static int qeth_l3_send_setdelmc(struct qeth_card *card, |
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struct qeth_ipaddr *addr, |
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enum qeth_ipa_cmds ipacmd) |
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{ |
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struct qeth_cmd_buffer *iob; |
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struct qeth_ipa_cmd *cmd; |
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|
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QETH_CARD_TEXT(card, 4, "setdelmc"); |
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|
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iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, |
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IPA_DATA_SIZEOF(setdelipm)); |
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if (!iob) |
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return -ENOMEM; |
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cmd = __ipa_cmd(iob); |
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if (addr->proto == QETH_PROT_IPV6) { |
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cmd->data.setdelipm.ip = addr->u.a6.addr; |
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ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac); |
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} else { |
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cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr; |
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ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac); |
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} |
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|
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return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); |
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} |
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|
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static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len) |
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{ |
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unsigned int i = 0; |
|
|
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while (len && i < 4) { |
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int mask_len = min_t(int, len, 32); |
|
|
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prefix->s6_addr32[i] = inet_make_mask(mask_len); |
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len -= mask_len; |
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i++; |
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} |
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} |
|
|
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static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set) |
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{ |
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switch (addr->type) { |
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case QETH_IP_TYPE_RXIP: |
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return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; |
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case QETH_IP_TYPE_VIPA: |
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return (set) ? QETH_IPA_SETIP_VIPA_FLAG : |
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QETH_IPA_DELIP_VIPA_FLAG; |
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default: |
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return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; |
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} |
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} |
|
|
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static int qeth_l3_send_setdelip(struct qeth_card *card, |
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struct qeth_ipaddr *addr, |
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enum qeth_ipa_cmds ipacmd) |
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{ |
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struct qeth_cmd_buffer *iob; |
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struct qeth_ipa_cmd *cmd; |
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u32 flags; |
|
|
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QETH_CARD_TEXT(card, 4, "setdelip"); |
|
|
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iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, |
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IPA_DATA_SIZEOF(setdelip6)); |
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if (!iob) |
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return -ENOMEM; |
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cmd = __ipa_cmd(iob); |
|
|
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flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP); |
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QETH_CARD_TEXT_(card, 4, "flags%02X", flags); |
|
|
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if (addr->proto == QETH_PROT_IPV6) { |
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cmd->data.setdelip6.addr = addr->u.a6.addr; |
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qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix, |
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addr->u.a6.pfxlen); |
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cmd->data.setdelip6.flags = flags; |
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} else { |
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cmd->data.setdelip4.addr = addr->u.a4.addr; |
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cmd->data.setdelip4.mask = addr->u.a4.mask; |
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cmd->data.setdelip4.flags = flags; |
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} |
|
|
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return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); |
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} |
|
|
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static int qeth_l3_send_setrouting(struct qeth_card *card, |
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enum qeth_routing_types type, enum qeth_prot_versions prot) |
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{ |
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int rc; |
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struct qeth_ipa_cmd *cmd; |
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struct qeth_cmd_buffer *iob; |
|
|
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QETH_CARD_TEXT(card, 4, "setroutg"); |
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iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot, |
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IPA_DATA_SIZEOF(setrtg)); |
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if (!iob) |
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return -ENOMEM; |
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cmd = __ipa_cmd(iob); |
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cmd->data.setrtg.type = (type); |
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rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); |
|
|
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return rc; |
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} |
|
|
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static int qeth_l3_correct_routing_type(struct qeth_card *card, |
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enum qeth_routing_types *type, enum qeth_prot_versions prot) |
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{ |
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if (IS_IQD(card)) { |
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switch (*type) { |
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case NO_ROUTER: |
|
case PRIMARY_CONNECTOR: |
|
case SECONDARY_CONNECTOR: |
|
case MULTICAST_ROUTER: |
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return 0; |
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default: |
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goto out_inval; |
|
} |
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} else { |
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switch (*type) { |
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case NO_ROUTER: |
|
case PRIMARY_ROUTER: |
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case SECONDARY_ROUTER: |
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return 0; |
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case MULTICAST_ROUTER: |
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if (qeth_is_ipafunc_supported(card, prot, |
|
IPA_OSA_MC_ROUTER)) |
|
return 0; |
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default: |
|
goto out_inval; |
|
} |
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} |
|
out_inval: |
|
*type = NO_ROUTER; |
|
return -EINVAL; |
|
} |
|
|
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int qeth_l3_setrouting_v4(struct qeth_card *card) |
|
{ |
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int rc; |
|
|
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QETH_CARD_TEXT(card, 3, "setrtg4"); |
|
|
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rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, |
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QETH_PROT_IPV4); |
|
if (rc) |
|
return rc; |
|
|
|
rc = qeth_l3_send_setrouting(card, card->options.route4.type, |
|
QETH_PROT_IPV4); |
|
if (rc) { |
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card->options.route4.type = NO_ROUTER; |
|
QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", |
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rc, CARD_DEVID(card)); |
|
} |
|
return rc; |
|
} |
|
|
|
int qeth_l3_setrouting_v6(struct qeth_card *card) |
|
{ |
|
int rc = 0; |
|
|
|
QETH_CARD_TEXT(card, 3, "setrtg6"); |
|
|
|
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 (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", |
|
rc, CARD_DEVID(card)); |
|
} |
|
return rc; |
|
} |
|
|
|
/* |
|
* IP address takeover related functions |
|
*/ |
|
|
|
/** |
|
* qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. |
|
* |
|
* Caller must hold ip_lock. |
|
*/ |
|
void qeth_l3_update_ipato(struct qeth_card *card) |
|
{ |
|
struct qeth_ipaddr *addr; |
|
unsigned int i; |
|
|
|
hash_for_each(card->ip_htable, i, addr, hnode) { |
|
if (addr->type != QETH_IP_TYPE_NORMAL) |
|
continue; |
|
addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); |
|
} |
|
} |
|
|
|
static void qeth_l3_clear_ipato_list(struct qeth_card *card) |
|
{ |
|
struct qeth_ipato_entry *ipatoe, *tmp; |
|
|
|
mutex_lock(&card->ip_lock); |
|
|
|
list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { |
|
list_del(&ipatoe->entry); |
|
kfree(ipatoe); |
|
} |
|
|
|
qeth_l3_update_ipato(card); |
|
mutex_unlock(&card->ip_lock); |
|
} |
|
|
|
int qeth_l3_add_ipato_entry(struct qeth_card *card, |
|
struct qeth_ipato_entry *new) |
|
{ |
|
struct qeth_ipato_entry *ipatoe; |
|
int rc = 0; |
|
|
|
QETH_CARD_TEXT(card, 2, "addipato"); |
|
|
|
mutex_lock(&card->ip_lock); |
|
|
|
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); |
|
qeth_l3_update_ipato(card); |
|
} |
|
|
|
mutex_unlock(&card->ip_lock); |
|
|
|
return rc; |
|
} |
|
|
|
int qeth_l3_del_ipato_entry(struct qeth_card *card, |
|
enum qeth_prot_versions proto, u8 *addr, |
|
unsigned int mask_bits) |
|
{ |
|
struct qeth_ipato_entry *ipatoe, *tmp; |
|
int rc = -ENOENT; |
|
|
|
QETH_CARD_TEXT(card, 2, "delipato"); |
|
|
|
mutex_lock(&card->ip_lock); |
|
|
|
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); |
|
qeth_l3_update_ipato(card); |
|
kfree(ipatoe); |
|
rc = 0; |
|
} |
|
} |
|
|
|
mutex_unlock(&card->ip_lock); |
|
|
|
return rc; |
|
} |
|
|
|
int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, |
|
enum qeth_ip_types type, |
|
enum qeth_prot_versions proto) |
|
{ |
|
struct qeth_ipaddr addr; |
|
|
|
qeth_l3_init_ipaddr(&addr, type, proto); |
|
if (proto == QETH_PROT_IPV4) |
|
memcpy(&addr.u.a4.addr, ip, 4); |
|
else |
|
memcpy(&addr.u.a6.addr, ip, 16); |
|
|
|
return qeth_l3_modify_ip(card, &addr, add); |
|
} |
|
|
|
int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) |
|
{ |
|
struct qeth_ipaddr addr; |
|
unsigned int i; |
|
|
|
qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); |
|
addr.u.a6.addr.s6_addr[0] = 0xfe; |
|
addr.u.a6.addr.s6_addr[1] = 0x80; |
|
for (i = 0; i < 8; i++) |
|
addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; |
|
|
|
return qeth_l3_modify_ip(card, &addr, add); |
|
} |
|
|
|
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 (card->options.sniffer) |
|
return 0; |
|
|
|
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); |
|
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 (card->options.sniffer) |
|
return 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); |
|
if (rc) |
|
QETH_CARD_TEXT(card, 2, "failed"); |
|
|
|
return rc; |
|
} |
|
|
|
static int qeth_l3_setadapter_parms(struct qeth_card *card) |
|
{ |
|
int rc = 0; |
|
|
|
QETH_CARD_TEXT(card, 2, "setadprm"); |
|
|
|
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_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", |
|
netdev_name(card->dev)); |
|
return 0; |
|
} |
|
rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, |
|
IPA_CMD_ASS_START, NULL); |
|
if (rc) { |
|
dev_warn(&card->gdev->dev, |
|
"Starting ARP processing support for %s failed\n", |
|
netdev_name(card->dev)); |
|
} |
|
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", |
|
netdev_name(card->dev)); |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, |
|
IPA_CMD_ASS_START, NULL); |
|
if (rc) |
|
dev_warn(&card->gdev->dev, |
|
"Starting source MAC-address support for %s failed\n", |
|
netdev_name(card->dev)); |
|
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", netdev_name(card->dev)); |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, |
|
IPA_CMD_ASS_START, NULL); |
|
if (rc) { |
|
dev_warn(&card->gdev->dev, |
|
"Starting VLAN support for %s failed\n", |
|
netdev_name(card->dev)); |
|
} 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", |
|
netdev_name(card->dev)); |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, |
|
IPA_CMD_ASS_START, NULL); |
|
if (rc) { |
|
dev_warn(&card->gdev->dev, |
|
"Starting multicast support for %s failed\n", |
|
netdev_name(card->dev)); |
|
} else { |
|
dev_info(&card->gdev->dev, "Multicast enabled\n"); |
|
card->dev->flags |= IFF_MULTICAST; |
|
} |
|
return rc; |
|
} |
|
|
|
static int qeth_l3_softsetup_ipv6(struct qeth_card *card) |
|
{ |
|
u32 ipv6_data = 3; |
|
int rc; |
|
|
|
QETH_CARD_TEXT(card, 3, "softipv6"); |
|
|
|
if (IS_IQD(card)) |
|
goto out; |
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START, |
|
&ipv6_data); |
|
if (rc) { |
|
dev_err(&card->gdev->dev, |
|
"Activating IPv6 support for %s failed\n", |
|
netdev_name(card->dev)); |
|
return rc; |
|
} |
|
rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START, |
|
NULL); |
|
if (rc) { |
|
dev_err(&card->gdev->dev, |
|
"Activating IPv6 support for %s failed\n", |
|
netdev_name(card->dev)); |
|
return rc; |
|
} |
|
rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU, |
|
IPA_CMD_ASS_START, NULL); |
|
if (rc) { |
|
dev_warn(&card->gdev->dev, |
|
"Enabling the passthrough mode for %s failed\n", |
|
netdev_name(card->dev)); |
|
return rc; |
|
} |
|
out: |
|
dev_info(&card->gdev->dev, "IPV6 enabled\n"); |
|
return 0; |
|
} |
|
|
|
static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) |
|
{ |
|
QETH_CARD_TEXT(card, 3, "strtipv6"); |
|
|
|
if (!qeth_is_supported(card, IPA_IPV6)) { |
|
dev_info(&card->gdev->dev, |
|
"IPv6 not supported on %s\n", netdev_name(card->dev)); |
|
return 0; |
|
} |
|
return qeth_l3_softsetup_ipv6(card); |
|
} |
|
|
|
static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) |
|
{ |
|
u32 filter_data = 1; |
|
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", |
|
netdev_name(card->dev)); |
|
rc = -EOPNOTSUPP; |
|
goto out; |
|
} |
|
rc = qeth_send_simple_setassparms(card, IPA_FILTERING, |
|
IPA_CMD_ASS_START, NULL); |
|
if (rc) { |
|
dev_warn(&card->gdev->dev, |
|
"Enabling broadcast filtering for %s failed\n", |
|
netdev_name(card->dev)); |
|
goto out; |
|
} |
|
|
|
rc = qeth_send_simple_setassparms(card, IPA_FILTERING, |
|
IPA_CMD_ASS_CONFIGURE, &filter_data); |
|
if (rc) { |
|
dev_warn(&card->gdev->dev, |
|
"Setting up broadcast filtering for %s failed\n", |
|
netdev_name(card->dev)); |
|
goto out; |
|
} |
|
card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; |
|
dev_info(&card->gdev->dev, "Broadcast enabled\n"); |
|
rc = qeth_send_simple_setassparms(card, IPA_FILTERING, |
|
IPA_CMD_ASS_ENABLE, &filter_data); |
|
if (rc) { |
|
dev_warn(&card->gdev->dev, |
|
"Setting up broadcast echo filtering for %s failed\n", |
|
netdev_name(card->dev)); |
|
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 void qeth_l3_start_ipassists(struct qeth_card *card) |
|
{ |
|
QETH_CARD_TEXT(card, 3, "strtipas"); |
|
|
|
qeth_l3_start_ipa_arp_processing(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*/ |
|
} |
|
|
|
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 = (struct qeth_ipa_cmd *) data; |
|
|
|
if (cmd->hdr.return_code) |
|
return -EIO; |
|
if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr)) |
|
return -EADDRNOTAVAIL; |
|
|
|
ether_addr_copy(card->dev->dev_addr, |
|
cmd->data.create_destroy_addr.mac_addr); |
|
return 0; |
|
} |
|
|
|
static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) |
|
{ |
|
int rc = 0; |
|
struct qeth_cmd_buffer *iob; |
|
|
|
QETH_CARD_TEXT(card, 2, "hsrmac"); |
|
|
|
iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, |
|
IPA_DATA_SIZEOF(create_destroy_addr)); |
|
if (!iob) |
|
return -ENOMEM; |
|
|
|
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 = (struct qeth_ipa_cmd *) data; |
|
u16 *uid = reply->param; |
|
|
|
if (cmd->hdr.return_code == 0) { |
|
*uid = cmd->data.create_destroy_addr.uid; |
|
return 0; |
|
} |
|
|
|
dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n"); |
|
return -EIO; |
|
} |
|
|
|
static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid) |
|
{ |
|
struct qeth_cmd_buffer *iob; |
|
|
|
QETH_CARD_TEXT(card, 2, "guniqeid"); |
|
|
|
if (!qeth_is_supported(card, IPA_IPV6)) |
|
goto out; |
|
|
|
iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, |
|
IPA_DATA_SIZEOF(create_destroy_addr)); |
|
if (!iob) |
|
goto out; |
|
|
|
__ipa_cmd(iob)->data.create_destroy_addr.uid = uid; |
|
qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid); |
|
|
|
out: |
|
return uid; |
|
} |
|
|
|
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_CARD_TEXT(card, 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 (%#06x) on device %x\n", |
|
cmd->data.diagass.action, CARD_DEVID(card)); |
|
} |
|
|
|
return rc ? -EIO : 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_CARD_TEXT(card, 2, "diagtrac"); |
|
|
|
iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0); |
|
if (!iob) |
|
return -ENOMEM; |
|
cmd = __ipa_cmd(iob); |
|
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 int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg) |
|
{ |
|
struct qeth_card *card = arg; |
|
struct inet6_dev *in6_dev; |
|
struct in_device *in4_dev; |
|
struct qeth_ipaddr *ipm; |
|
struct qeth_ipaddr tmp; |
|
struct ip_mc_list *im4; |
|
struct ifmcaddr6 *im6; |
|
|
|
QETH_CARD_TEXT(card, 4, "addmc"); |
|
|
|
if (!dev || !(dev->flags & IFF_UP)) |
|
goto out; |
|
|
|
in4_dev = __in_dev_get_rtnl(dev); |
|
if (!in4_dev) |
|
goto walk_ipv6; |
|
|
|
qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); |
|
tmp.disp_flag = QETH_DISP_ADDR_ADD; |
|
tmp.is_multicast = 1; |
|
|
|
for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL; |
|
im4 = rtnl_dereference(im4->next_rcu)) { |
|
tmp.u.a4.addr = im4->multiaddr; |
|
|
|
ipm = qeth_l3_find_addr_by_ip(card, &tmp); |
|
if (ipm) { |
|
/* for mcast, by-IP match means full match */ |
|
ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; |
|
continue; |
|
} |
|
|
|
ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL); |
|
if (!ipm) |
|
continue; |
|
|
|
hash_add(card->rx_mode_addrs, &ipm->hnode, |
|
qeth_l3_ipaddr_hash(ipm)); |
|
} |
|
|
|
walk_ipv6: |
|
if (!qeth_is_supported(card, IPA_IPV6)) |
|
goto out; |
|
|
|
in6_dev = __in6_dev_get(dev); |
|
if (!in6_dev) |
|
goto out; |
|
|
|
qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); |
|
tmp.disp_flag = QETH_DISP_ADDR_ADD; |
|
tmp.is_multicast = 1; |
|
|
|
read_lock_bh(&in6_dev->lock); |
|
for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { |
|
tmp.u.a6.addr = im6->mca_addr; |
|
|
|
ipm = qeth_l3_find_addr_by_ip(card, &tmp); |
|
if (ipm) { |
|
/* for mcast, by-IP match means full match */ |
|
ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; |
|
continue; |
|
} |
|
|
|
ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC); |
|
if (!ipm) |
|
continue; |
|
|
|
hash_add(card->rx_mode_addrs, &ipm->hnode, |
|
qeth_l3_ipaddr_hash(ipm)); |
|
|
|
} |
|
read_unlock_bh(&in6_dev->lock); |
|
|
|
out: |
|
return 0; |
|
} |
|
|
|
static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, |
|
__be16 proto, u16 vid) |
|
{ |
|
struct qeth_card *card = dev->ml_priv; |
|
|
|
QETH_CARD_TEXT_(card, 4, "aid:%d", vid); |
|
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; |
|
|
|
QETH_CARD_TEXT_(card, 4, "kid:%d", vid); |
|
return 0; |
|
} |
|
|
|
static void qeth_l3_set_promisc_mode(struct qeth_card *card) |
|
{ |
|
bool enable = card->dev->flags & IFF_PROMISC; |
|
|
|
if (card->info.promisc_mode == enable) |
|
return; |
|
|
|
if (IS_VM_NIC(card)) { /* Guestlan trace */ |
|
if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) |
|
qeth_setadp_promisc_mode(card, enable); |
|
} else if (card->options.sniffer && /* HiperSockets trace */ |
|
qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { |
|
if (enable) { |
|
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_rx_mode_work(struct work_struct *work) |
|
{ |
|
struct qeth_card *card = container_of(work, struct qeth_card, |
|
rx_mode_work); |
|
struct qeth_ipaddr *addr; |
|
struct hlist_node *tmp; |
|
int i, rc; |
|
|
|
QETH_CARD_TEXT(card, 3, "setmulti"); |
|
|
|
if (!card->options.sniffer) { |
|
rtnl_lock(); |
|
qeth_l3_add_mcast_rtnl(card->dev, 0, card); |
|
if (qeth_is_supported(card, IPA_FULL_VLAN)) |
|
vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card); |
|
rtnl_unlock(); |
|
|
|
hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) { |
|
switch (addr->disp_flag) { |
|
case QETH_DISP_ADDR_DELETE: |
|
rc = qeth_l3_deregister_addr_entry(card, addr); |
|
if (!rc || rc == -ENOENT) { |
|
hash_del(&addr->hnode); |
|
kfree(addr); |
|
} |
|
break; |
|
case QETH_DISP_ADDR_ADD: |
|
rc = qeth_l3_register_addr_entry(card, addr); |
|
if (rc && rc != -ENETDOWN) { |
|
hash_del(&addr->hnode); |
|
kfree(addr); |
|
break; |
|
} |
|
fallthrough; |
|
default: |
|
/* for next call to set_rx_mode(): */ |
|
addr->disp_flag = QETH_DISP_ADDR_DELETE; |
|
} |
|
} |
|
} |
|
|
|
qeth_l3_set_promisc_mode(card); |
|
} |
|
|
|
static int qeth_l3_arp_makerc(u16 rc) |
|
{ |
|
switch (rc) { |
|
case IPA_RC_SUCCESS: |
|
return 0; |
|
case QETH_IPA_ARP_RC_NOTSUPP: |
|
case QETH_IPA_ARP_RC_Q_NOTSUPP: |
|
return -EOPNOTSUPP; |
|
case QETH_IPA_ARP_RC_OUT_OF_RANGE: |
|
return -EINVAL; |
|
case QETH_IPA_ARP_RC_Q_NO_DATA: |
|
return -ENOENT; |
|
default: |
|
return -EIO; |
|
} |
|
} |
|
|
|
static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply, |
|
unsigned long data) |
|
{ |
|
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; |
|
|
|
qeth_setassparms_cb(card, reply, data); |
|
return qeth_l3_arp_makerc(cmd->hdr.return_code); |
|
} |
|
|
|
static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) |
|
{ |
|
struct qeth_cmd_buffer *iob; |
|
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 (IS_VM_NIC(card)) |
|
return -EOPNOTSUPP; |
|
if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, |
|
IPA_CMD_ASS_ARP_SET_NO_ENTRIES, |
|
SETASS_DATA_SIZEOF(flags_32bit), |
|
QETH_PROT_IPV4); |
|
if (!iob) |
|
return -ENOMEM; |
|
|
|
__ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries; |
|
rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); |
|
if (rc) |
|
QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n", |
|
CARD_DEVID(card), rc); |
|
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 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 qeth_l3_arp_makerc(cmd->hdr.return_code); |
|
} |
|
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 qeth_l3_arp_makerc(cmd->hdr.return_code); |
|
} |
|
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", -ENOSPC); |
|
memset(qinfo->udata, 0, 4); |
|
return -ENOSPC; |
|
} |
|
|
|
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; |
|
} |
|
|
|
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 rc; |
|
|
|
QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); |
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, |
|
IPA_CMD_ASS_ARP_QUERY_INFO, |
|
SETASS_DATA_SIZEOF(query_arp), prot); |
|
if (!iob) |
|
return -ENOMEM; |
|
cmd = __ipa_cmd(iob); |
|
cmd->data.setassparms.data.query_arp.request_bits = 0x000F; |
|
rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo); |
|
if (rc) |
|
QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n", |
|
CARD_DEVID(card), rc); |
|
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; |
|
} |
|
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); |
|
} |
|
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_modify_entry(struct qeth_card *card, |
|
struct qeth_arp_cache_entry *entry, |
|
enum qeth_arp_process_subcmds arp_cmd) |
|
{ |
|
struct qeth_arp_cache_entry *cmd_entry; |
|
struct qeth_cmd_buffer *iob; |
|
int rc; |
|
|
|
if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY) |
|
QETH_CARD_TEXT(card, 3, "arpadd"); |
|
else |
|
QETH_CARD_TEXT(card, 3, "arpdel"); |
|
|
|
/* |
|
* 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 (IS_VM_NIC(card)) |
|
return -EOPNOTSUPP; |
|
if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd, |
|
SETASS_DATA_SIZEOF(arp_entry), |
|
QETH_PROT_IPV4); |
|
if (!iob) |
|
return -ENOMEM; |
|
|
|
cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry; |
|
ether_addr_copy(cmd_entry->macaddr, entry->macaddr); |
|
memcpy(cmd_entry->ipaddr, entry->ipaddr, 4); |
|
rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); |
|
if (rc) |
|
QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n", |
|
arp_cmd, CARD_DEVID(card), rc); |
|
return rc; |
|
} |
|
|
|
static int qeth_l3_arp_flush_cache(struct qeth_card *card) |
|
{ |
|
struct qeth_cmd_buffer *iob; |
|
int rc; |
|
|
|
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 (IS_VM_NIC(card) || IS_IQD(card)) |
|
return -EOPNOTSUPP; |
|
if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, |
|
IPA_CMD_ASS_ARP_FLUSH_CACHE, 0, |
|
QETH_PROT_IPV4); |
|
if (!iob) |
|
return -ENOMEM; |
|
|
|
rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); |
|
if (rc) |
|
QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n", |
|
CARD_DEVID(card), rc); |
|
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; |
|
enum qeth_arp_process_subcmds arp_cmd; |
|
int rc = 0; |
|
|
|
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: |
|
case SIOC_QETH_ARP_REMOVE_ENTRY: |
|
if (!capable(CAP_NET_ADMIN)) |
|
return -EPERM; |
|
if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry))) |
|
return -EFAULT; |
|
|
|
arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ? |
|
IPA_CMD_ASS_ARP_ADD_ENTRY : |
|
IPA_CMD_ASS_ARP_REMOVE_ENTRY; |
|
return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd); |
|
case SIOC_QETH_ARP_FLUSH_CACHE: |
|
if (!capable(CAP_NET_ADMIN)) { |
|
rc = -EPERM; |
|
break; |
|
} |
|
rc = qeth_l3_arp_flush_cache(card); |
|
break; |
|
default: |
|
rc = -EOPNOTSUPP; |
|
} |
|
return rc; |
|
} |
|
|
|
static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst, |
|
__be16 proto) |
|
{ |
|
struct neighbour *n = NULL; |
|
|
|
if (dst) |
|
n = dst_neigh_lookup_skb(dst, skb); |
|
|
|
if (n) { |
|
int cast_type = n->type; |
|
|
|
neigh_release(n); |
|
if ((cast_type == RTN_BROADCAST) || |
|
(cast_type == RTN_MULTICAST) || |
|
(cast_type == RTN_ANYCAST)) |
|
return cast_type; |
|
return RTN_UNICAST; |
|
} |
|
|
|
/* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ |
|
switch (proto) { |
|
case htons(ETH_P_IP): |
|
if (ipv4_is_lbcast(ip_hdr(skb)->daddr)) |
|
return RTN_BROADCAST; |
|
return ipv4_is_multicast(ip_hdr(skb)->daddr) ? |
|
RTN_MULTICAST : RTN_UNICAST; |
|
case htons(ETH_P_IPV6): |
|
return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ? |
|
RTN_MULTICAST : RTN_UNICAST; |
|
case htons(ETH_P_AF_IUCV): |
|
return RTN_UNICAST; |
|
default: |
|
/* OSA only: ... and MAC address */ |
|
return qeth_get_ether_cast_type(skb); |
|
} |
|
} |
|
|
|
static int qeth_l3_get_cast_type(struct sk_buff *skb, __be16 proto) |
|
{ |
|
struct dst_entry *dst; |
|
int cast_type; |
|
|
|
rcu_read_lock(); |
|
dst = qeth_dst_check_rcu(skb, proto); |
|
cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto); |
|
rcu_read_unlock(); |
|
|
|
return cast_type; |
|
} |
|
|
|
static u8 qeth_l3_cast_type_to_flag(int cast_type) |
|
{ |
|
if (cast_type == RTN_MULTICAST) |
|
return QETH_CAST_MULTICAST; |
|
if (cast_type == RTN_ANYCAST) |
|
return QETH_CAST_ANYCAST; |
|
if (cast_type == RTN_BROADCAST) |
|
return QETH_CAST_BROADCAST; |
|
return QETH_CAST_UNICAST; |
|
} |
|
|
|
static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue, |
|
struct qeth_hdr *hdr, struct sk_buff *skb, |
|
__be16 proto, unsigned int data_len) |
|
{ |
|
struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3; |
|
struct vlan_ethhdr *veth = vlan_eth_hdr(skb); |
|
struct qeth_card *card = queue->card; |
|
struct dst_entry *dst; |
|
int cast_type; |
|
|
|
hdr->hdr.l3.length = data_len; |
|
|
|
if (skb_is_gso(skb)) { |
|
hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; |
|
} else { |
|
hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; |
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) { |
|
qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, proto); |
|
/* some HW requires combined L3+L4 csum offload: */ |
|
if (proto == htons(ETH_P_IP)) |
|
hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; |
|
} |
|
} |
|
|
|
if (proto == htons(ETH_P_IP) || IS_IQD(card)) { |
|
/* NETIF_F_HW_VLAN_CTAG_TX */ |
|
if (skb_vlan_tag_present(skb)) { |
|
hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; |
|
hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); |
|
} |
|
} else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { |
|
hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; |
|
hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); |
|
} |
|
|
|
rcu_read_lock(); |
|
dst = qeth_dst_check_rcu(skb, proto); |
|
|
|
if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ) |
|
cast_type = RTN_UNICAST; |
|
else |
|
cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto); |
|
l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type); |
|
|
|
switch (proto) { |
|
case htons(ETH_P_IP): |
|
l3_hdr->next_hop.addr.s6_addr32[3] = |
|
qeth_next_hop_v4_rcu(skb, dst); |
|
break; |
|
case htons(ETH_P_IPV6): |
|
l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst); |
|
|
|
hdr->hdr.l3.flags |= QETH_HDR_IPV6; |
|
if (!IS_IQD(card)) |
|
hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; |
|
break; |
|
case htons(ETH_P_AF_IUCV): |
|
l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80); |
|
memcpy(&l3_hdr->next_hop.addr.s6_addr32[2], |
|
iucv_trans_hdr(skb)->destUserID, 8); |
|
l3_hdr->flags |= QETH_HDR_IPV6; |
|
break; |
|
default: |
|
/* OSA only: */ |
|
l3_hdr->flags |= QETH_HDR_PASSTHRU; |
|
} |
|
rcu_read_unlock(); |
|
} |
|
|
|
static void qeth_l3_fixup_headers(struct sk_buff *skb) |
|
{ |
|
struct iphdr *iph = ip_hdr(skb); |
|
|
|
/* this is safe, IPv6 traffic takes a different path */ |
|
if (skb->ip_summed == CHECKSUM_PARTIAL) |
|
iph->check = 0; |
|
if (skb_is_gso(skb)) { |
|
iph->tot_len = 0; |
|
tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr, |
|
iph->daddr, 0); |
|
} |
|
} |
|
|
|
static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, |
|
struct qeth_qdio_out_q *queue, __be16 proto) |
|
{ |
|
unsigned int hw_hdr_len; |
|
int rc; |
|
|
|
/* re-use the L2 header area for the HW header: */ |
|
hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) : |
|
sizeof(struct qeth_hdr); |
|
rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN); |
|
if (rc) |
|
return rc; |
|
skb_pull(skb, ETH_HLEN); |
|
|
|
qeth_l3_fixup_headers(skb); |
|
return qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header); |
|
} |
|
|
|
static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, |
|
struct net_device *dev) |
|
{ |
|
struct qeth_card *card = dev->ml_priv; |
|
__be16 proto = vlan_get_protocol(skb); |
|
u16 txq = skb_get_queue_mapping(skb); |
|
struct qeth_qdio_out_q *queue; |
|
int rc; |
|
|
|
if (!skb_is_gso(skb)) |
|
qdisc_skb_cb(skb)->pkt_len = skb->len; |
|
if (IS_IQD(card)) { |
|
queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)]; |
|
|
|
if (card->options.sniffer) |
|
goto tx_drop; |
|
|
|
switch (proto) { |
|
case htons(ETH_P_AF_IUCV): |
|
if (card->options.cq != QETH_CQ_ENABLED) |
|
goto tx_drop; |
|
break; |
|
case htons(ETH_P_IP): |
|
case htons(ETH_P_IPV6): |
|
if (card->options.cq == QETH_CQ_ENABLED) |
|
goto tx_drop; |
|
break; |
|
default: |
|
goto tx_drop; |
|
} |
|
} else { |
|
queue = card->qdio.out_qs[txq]; |
|
} |
|
|
|
if (!(dev->flags & IFF_BROADCAST) && |
|
qeth_l3_get_cast_type(skb, proto) == RTN_BROADCAST) |
|
goto tx_drop; |
|
|
|
if (proto == htons(ETH_P_IP) || IS_IQD(card)) |
|
rc = qeth_l3_xmit(card, skb, queue, proto); |
|
else |
|
rc = qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header); |
|
|
|
if (!rc) |
|
return NETDEV_TX_OK; |
|
|
|
tx_drop: |
|
QETH_TXQ_STAT_INC(queue, tx_dropped); |
|
kfree_skb(skb); |
|
return NETDEV_TX_OK; |
|
} |
|
|
|
static void qeth_l3_set_rx_mode(struct net_device *dev) |
|
{ |
|
struct qeth_card *card = dev->ml_priv; |
|
|
|
schedule_work(&card->rx_mode_work); |
|
} |
|
|
|
/* |
|
* 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 netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, |
|
struct net_device *dev, |
|
netdev_features_t features) |
|
{ |
|
if (vlan_get_protocol(skb) != htons(ETH_P_IP)) |
|
features &= ~NETIF_F_HW_VLAN_CTAG_TX; |
|
return qeth_features_check(skb, dev, features); |
|
} |
|
|
|
static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, |
|
struct net_device *sb_dev) |
|
{ |
|
__be16 proto = vlan_get_protocol(skb); |
|
|
|
return qeth_iqd_select_queue(dev, skb, |
|
qeth_l3_get_cast_type(skb, proto), sb_dev); |
|
} |
|
|
|
static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb, |
|
struct net_device *sb_dev) |
|
{ |
|
struct qeth_card *card = dev->ml_priv; |
|
|
|
if (qeth_uses_tx_prio_queueing(card)) |
|
return qeth_get_priority_queue(card, skb); |
|
|
|
return netdev_pick_tx(dev, skb, sb_dev); |
|
} |
|
|
|
static const struct net_device_ops qeth_l3_netdev_ops = { |
|
.ndo_open = qeth_open, |
|
.ndo_stop = qeth_stop, |
|
.ndo_get_stats64 = qeth_get_stats64, |
|
.ndo_start_xmit = qeth_l3_hard_start_xmit, |
|
.ndo_select_queue = qeth_l3_iqd_select_queue, |
|
.ndo_validate_addr = eth_validate_addr, |
|
.ndo_set_rx_mode = qeth_l3_set_rx_mode, |
|
.ndo_do_ioctl = qeth_do_ioctl, |
|
.ndo_fix_features = qeth_fix_features, |
|
.ndo_set_features = qeth_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_open, |
|
.ndo_stop = qeth_stop, |
|
.ndo_get_stats64 = qeth_get_stats64, |
|
.ndo_start_xmit = qeth_l3_hard_start_xmit, |
|
.ndo_features_check = qeth_l3_osa_features_check, |
|
.ndo_select_queue = qeth_l3_osa_select_queue, |
|
.ndo_validate_addr = eth_validate_addr, |
|
.ndo_set_rx_mode = qeth_l3_set_rx_mode, |
|
.ndo_do_ioctl = qeth_do_ioctl, |
|
.ndo_fix_features = qeth_fix_features, |
|
.ndo_set_features = qeth_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) |
|
{ |
|
struct net_device *dev = card->dev; |
|
unsigned int headroom; |
|
int rc; |
|
|
|
if (IS_OSD(card) || IS_OSX(card)) { |
|
card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; |
|
|
|
/*IPv6 address autoconfiguration stuff*/ |
|
dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id); |
|
|
|
if (!IS_VM_NIC(card)) { |
|
card->dev->features |= NETIF_F_SG; |
|
card->dev->hw_features |= NETIF_F_TSO | |
|
NETIF_F_RXCSUM | NETIF_F_IP_CSUM; |
|
card->dev->vlan_features |= NETIF_F_TSO | |
|
NETIF_F_RXCSUM | NETIF_F_IP_CSUM; |
|
} |
|
|
|
if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { |
|
card->dev->hw_features |= NETIF_F_IPV6_CSUM; |
|
card->dev->vlan_features |= NETIF_F_IPV6_CSUM; |
|
} |
|
if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { |
|
card->dev->hw_features |= NETIF_F_TSO6; |
|
card->dev->vlan_features |= NETIF_F_TSO6; |
|
} |
|
|
|
/* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */ |
|
if (card->dev->hw_features & NETIF_F_TSO6) |
|
headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN; |
|
else if (card->dev->hw_features & NETIF_F_TSO) |
|
headroom = sizeof(struct qeth_hdr_tso); |
|
else |
|
headroom = sizeof(struct qeth_hdr) + VLAN_HLEN; |
|
} else if (IS_IQD(card)) { |
|
card->dev->flags |= IFF_NOARP; |
|
card->dev->netdev_ops = &qeth_l3_netdev_ops; |
|
headroom = sizeof(struct qeth_hdr) - ETH_HLEN; |
|
|
|
rc = qeth_l3_iqd_read_initial_mac(card); |
|
if (rc) |
|
return rc; |
|
} else |
|
return -ENODEV; |
|
|
|
card->dev->needed_headroom = headroom; |
|
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); |
|
if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) |
|
netif_set_gso_max_size(card->dev, |
|
PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); |
|
|
|
netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); |
|
return register_netdev(card->dev); |
|
} |
|
|
|
static const struct device_type qeth_l3_devtype = { |
|
.name = "qeth_layer3", |
|
.groups = qeth_l3_attr_groups, |
|
}; |
|
|
|
static int qeth_l3_probe_device(struct ccwgroup_device *gdev) |
|
{ |
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev); |
|
int rc; |
|
|
|
hash_init(card->ip_htable); |
|
mutex_init(&card->ip_lock); |
|
card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0, |
|
dev_name(&gdev->dev)); |
|
if (!card->cmd_wq) |
|
return -ENOMEM; |
|
|
|
if (gdev->dev.type == &qeth_generic_devtype) { |
|
rc = device_add_groups(&gdev->dev, qeth_l3_attr_groups); |
|
if (rc) { |
|
destroy_workqueue(card->cmd_wq); |
|
return rc; |
|
} |
|
} |
|
|
|
INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work); |
|
return 0; |
|
} |
|
|
|
static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) |
|
{ |
|
struct qeth_card *card = dev_get_drvdata(&cgdev->dev); |
|
|
|
if (cgdev->dev.type == &qeth_generic_devtype) |
|
device_remove_groups(&cgdev->dev, qeth_l3_attr_groups); |
|
|
|
qeth_set_allowed_threads(card, 0, 1); |
|
wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); |
|
|
|
if (cgdev->state == CCWGROUP_ONLINE) |
|
qeth_set_offline(card, card->discipline, false); |
|
|
|
cancel_work_sync(&card->close_dev_work); |
|
if (card->dev->reg_state == NETREG_REGISTERED) |
|
unregister_netdev(card->dev); |
|
|
|
flush_workqueue(card->cmd_wq); |
|
destroy_workqueue(card->cmd_wq); |
|
qeth_l3_clear_ip_htable(card, 0); |
|
qeth_l3_clear_ipato_list(card); |
|
} |
|
|
|
static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok) |
|
{ |
|
struct net_device *dev = card->dev; |
|
int rc = 0; |
|
|
|
/* softsetup */ |
|
QETH_CARD_TEXT(card, 2, "softsetp"); |
|
|
|
rc = qeth_l3_setadapter_parms(card); |
|
if (rc) |
|
QETH_CARD_TEXT_(card, 2, "2err%04x", rc); |
|
if (!card->options.sniffer) { |
|
qeth_l3_start_ipassists(card); |
|
|
|
rc = qeth_l3_setrouting_v4(card); |
|
if (rc) |
|
QETH_CARD_TEXT_(card, 2, "4err%04x", rc); |
|
rc = qeth_l3_setrouting_v6(card); |
|
if (rc) |
|
QETH_CARD_TEXT_(card, 2, "5err%04x", rc); |
|
} |
|
|
|
card->state = CARD_STATE_SOFTSETUP; |
|
|
|
qeth_set_allowed_threads(card, 0xffffffff, 0); |
|
qeth_l3_recover_ip(card); |
|
|
|
if (dev->reg_state != NETREG_REGISTERED) { |
|
rc = qeth_l3_setup_netdev(card); |
|
if (rc) |
|
goto err_setup; |
|
|
|
if (carrier_ok) |
|
netif_carrier_on(dev); |
|
} else { |
|
rtnl_lock(); |
|
rc = qeth_set_real_num_tx_queues(card, |
|
qeth_tx_actual_queues(card)); |
|
if (rc) { |
|
rtnl_unlock(); |
|
goto err_set_queues; |
|
} |
|
|
|
if (carrier_ok) |
|
netif_carrier_on(dev); |
|
else |
|
netif_carrier_off(dev); |
|
|
|
netif_device_attach(dev); |
|
qeth_enable_hw_features(dev); |
|
|
|
if (card->info.open_when_online) { |
|
card->info.open_when_online = 0; |
|
dev_open(dev, NULL); |
|
} |
|
rtnl_unlock(); |
|
} |
|
return 0; |
|
|
|
err_set_queues: |
|
err_setup: |
|
qeth_set_allowed_threads(card, 0, 1); |
|
card->state = CARD_STATE_DOWN; |
|
qeth_l3_clear_ip_htable(card, 1); |
|
return rc; |
|
} |
|
|
|
static void qeth_l3_set_offline(struct qeth_card *card) |
|
{ |
|
qeth_set_allowed_threads(card, 0, 1); |
|
qeth_l3_drain_rx_mode_cache(card); |
|
|
|
if (card->options.sniffer && |
|
(card->info.promisc_mode == SET_PROMISC_MODE_ON)) |
|
qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); |
|
|
|
if (card->state == CARD_STATE_SOFTSETUP) { |
|
card->state = CARD_STATE_DOWN; |
|
qeth_l3_clear_ip_htable(card, 1); |
|
} |
|
} |
|
|
|
/* 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; |
|
} |
|
|
|
const struct qeth_discipline qeth_l3_discipline = { |
|
.devtype = &qeth_l3_devtype, |
|
.setup = qeth_l3_probe_device, |
|
.remove = qeth_l3_remove_device, |
|
.set_online = qeth_l3_set_online, |
|
.set_offline = qeth_l3_set_offline, |
|
.do_ioctl = qeth_l3_do_ioctl, |
|
.control_event_handler = qeth_l3_control_event, |
|
}; |
|
EXPORT_SYMBOL_GPL(qeth_l3_discipline); |
|
|
|
static int qeth_l3_handle_ip_event(struct qeth_card *card, |
|
struct qeth_ipaddr *addr, |
|
unsigned long event) |
|
{ |
|
switch (event) { |
|
case NETDEV_UP: |
|
qeth_l3_modify_ip(card, addr, true); |
|
return NOTIFY_OK; |
|
case NETDEV_DOWN: |
|
qeth_l3_modify_ip(card, addr, false); |
|
return NOTIFY_OK; |
|
default: |
|
return NOTIFY_DONE; |
|
} |
|
} |
|
|
|
struct qeth_l3_ip_event_work { |
|
struct work_struct work; |
|
struct qeth_card *card; |
|
struct qeth_ipaddr addr; |
|
}; |
|
|
|
#define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work) |
|
|
|
static void qeth_l3_add_ip_worker(struct work_struct *work) |
|
{ |
|
struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); |
|
|
|
qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true); |
|
kfree(work); |
|
} |
|
|
|
static void qeth_l3_delete_ip_worker(struct work_struct *work) |
|
{ |
|
struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); |
|
|
|
qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false); |
|
kfree(work); |
|
} |
|
|
|
static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) |
|
{ |
|
if (is_vlan_dev(dev)) |
|
dev = vlan_dev_real_dev(dev); |
|
if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || |
|
dev->netdev_ops == &qeth_l3_netdev_ops) |
|
return (struct qeth_card *) dev->ml_priv; |
|
return NULL; |
|
} |
|
|
|
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 = ifa->ifa_dev->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, "ipevent"); |
|
|
|
qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); |
|
addr.u.a4.addr = ifa->ifa_address; |
|
addr.u.a4.mask = ifa->ifa_mask; |
|
|
|
return qeth_l3_handle_ip_event(card, &addr, event); |
|
} |
|
|
|
static struct notifier_block qeth_l3_ip_notifier = { |
|
qeth_l3_ip_event, |
|
NULL, |
|
}; |
|
|
|
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 = ifa->idev->dev; |
|
struct qeth_l3_ip_event_work *ip_work; |
|
struct qeth_card *card; |
|
|
|
if (event != NETDEV_UP && event != NETDEV_DOWN) |
|
return NOTIFY_DONE; |
|
|
|
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; |
|
|
|
ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC); |
|
if (!ip_work) |
|
return NOTIFY_DONE; |
|
|
|
if (event == NETDEV_UP) |
|
INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker); |
|
else |
|
INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker); |
|
|
|
ip_work->card = card; |
|
qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL, |
|
QETH_PROT_IPV6); |
|
ip_work->addr.u.a6.addr = ifa->addr; |
|
ip_work->addr.u.a6.pfxlen = ifa->prefix_len; |
|
|
|
queue_work(card->cmd_wq, &ip_work->work); |
|
return NOTIFY_OK; |
|
} |
|
|
|
static struct notifier_block qeth_l3_ip6_notifier = { |
|
qeth_l3_ip6_event, |
|
NULL, |
|
}; |
|
|
|
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; |
|
rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); |
|
if (rc) { |
|
unregister_inetaddr_notifier(&qeth_l3_ip_notifier); |
|
return rc; |
|
} |
|
return 0; |
|
} |
|
|
|
static void qeth_l3_unregister_notifiers(void) |
|
{ |
|
QETH_DBF_TEXT(SETUP, 5, "unregnot"); |
|
WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); |
|
WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); |
|
} |
|
|
|
static int __init qeth_l3_init(void) |
|
{ |
|
pr_info("register layer 3 discipline\n"); |
|
return qeth_l3_register_notifiers(); |
|
} |
|
|
|
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 <[email protected]>"); |
|
MODULE_DESCRIPTION("qeth layer 3 discipline"); |
|
MODULE_LICENSE("GPL");
|
|
|