[PATCH] s390: some qeth driver fixes
[patch 2/2] s390: some qeth driver fixes From: Frank Pavlic <fpavlic@de.ibm.com> - fixed kernel panic when using EDDP support in Layer 2 mode - NULL pointer exception in qeth_set_offline fixed. - setting EDDP in Layer 2 mode did not set NETIF_F_(SG/TSO) flags when device became online. - use sscanf for parsing and converting IPv4 addresses from string to __u8 values. - qeth_string_to_ipaddr6 fixed. in case of double colon the converted IPv6 address out from the string was not correct in previous implementation. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> diffstat: qeth.h | 112 +++++++++++++++++++++++++----------------------------------- qeth_eddp.c | 11 ++++- qeth_main.c | 17 +++------ 3 files changed, 63 insertions(+), 77 deletions(-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Frank Pavlic
Jeff Garzik
parent
0d613a27cc
commit
66cc5d5aee
3 changed files with 61 additions and 75 deletions
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@ -1075,16 +1075,6 @@ qeth_get_qdio_q_format(struct qeth_card *card)
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}
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}
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static inline int
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qeth_isdigit(char * buf)
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{
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while (*buf) {
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if (!isdigit(*buf++))
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return 0;
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}
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return 1;
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}
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static inline int
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qeth_isxdigit(char * buf)
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{
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@ -1104,33 +1094,17 @@ qeth_ipaddr4_to_string(const __u8 *addr, char *buf)
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static inline int
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qeth_string_to_ipaddr4(const char *buf, __u8 *addr)
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{
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const char *start, *end;
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char abuf[4];
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char *tmp;
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int len;
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int i;
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int count = 0, rc = 0;
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int in[4];
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start = buf;
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for (i = 0; i < 4; i++) {
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if (i == 3) {
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end = strchr(start,0xa);
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if (end)
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len = end - start;
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else
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len = strlen(start);
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}
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else {
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end = strchr(start, '.');
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len = end - start;
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}
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if ((len <= 0) || (len > 3))
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rc = sscanf(buf, "%d.%d.%d.%d%n",
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&in[0], &in[1], &in[2], &in[3], &count);
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if (rc != 4 || count)
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return -EINVAL;
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memset(abuf, 0, 4);
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strncpy(abuf, start, len);
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if (!qeth_isdigit(abuf))
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for (count = 0; count < 4; count++) {
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if (in[count] > 255)
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return -EINVAL;
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addr[i] = simple_strtoul(abuf, &tmp, 10);
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start = end + 1;
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addr[count] = in[count];
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}
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return 0;
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}
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@ -1149,36 +1123,44 @@ qeth_ipaddr6_to_string(const __u8 *addr, char *buf)
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static inline int
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qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
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{
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const char *start, *end;
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u16 *tmp_addr;
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char abuf[5];
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char *tmp;
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int len;
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int i;
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char *end, *start;
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__u16 *in;
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char num[5];
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int num2, cnt, out, found, save_cnt;
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unsigned short in_tmp[8] = {0, };
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tmp_addr = (u16 *)addr;
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start = buf;
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for (i = 0; i < 8; i++) {
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if (i == 7) {
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end = strchr(start,0xa);
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if (end)
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len = end - start;
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cnt = out = found = save_cnt = num2 = 0;
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end = start = (char *) buf;
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in = (__u16 *) addr;
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memset(in, 0, 16);
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while (end) {
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end = strchr(end,':');
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if (end == NULL) {
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end = (char *)buf + (strlen(buf));
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out = 1;
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}
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if ((end - start)) {
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memset(num, 0, 5);
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memcpy(num, start, end - start);
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if (!qeth_isxdigit(num))
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return -EINVAL;
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sscanf(start, "%x", &num2);
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if (found)
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in_tmp[save_cnt++] = num2;
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else
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len = strlen(start);
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}
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else {
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end = strchr(start, ':');
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len = end - start;
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}
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if ((len <= 0) || (len > 4))
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in[cnt++] = num2;
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if (out)
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break;
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} else {
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if (found)
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return -EINVAL;
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memset(abuf, 0, 5);
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strncpy(abuf, start, len);
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if (!qeth_isxdigit(abuf))
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return -EINVAL;
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tmp_addr[i] = simple_strtoul(abuf, &tmp, 16);
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start = end + 1;
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found = 1;
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}
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start = ++end;
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}
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cnt = 7;
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while (save_cnt)
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in[cnt--] = in_tmp[--save_cnt];
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return 0;
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}
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@ -59,7 +59,6 @@ qeth_eddp_free_context(struct qeth_eddp_context *ctx)
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for (i = 0; i < ctx->num_pages; ++i)
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free_page((unsigned long)ctx->pages[i]);
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kfree(ctx->pages);
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if (ctx->elements != NULL)
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kfree(ctx->elements);
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kfree(ctx);
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}
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@ -413,6 +412,13 @@ __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
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QETH_DBF_TEXT(trace, 5, "eddpftcp");
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eddp->skb_offset = sizeof(struct qeth_hdr) + eddp->nhl + eddp->thl;
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if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
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eddp->skb_offset += sizeof(struct ethhdr);
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#ifdef CONFIG_QETH_VLAN
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if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q))
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eddp->skb_offset += VLAN_HLEN;
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#endif /* CONFIG_QETH_VLAN */
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}
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tcph = eddp->skb->h.th;
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while (eddp->skb_offset < eddp->skb->len) {
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data_len = min((int)skb_shinfo(eddp->skb)->tso_size,
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@ -483,6 +489,7 @@ qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
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return -ENOMEM;
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}
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if (qhdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
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skb->mac.raw = (skb->data) + sizeof(struct qeth_hdr);
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memcpy(&eddp->mac, eth_hdr(skb), ETH_HLEN);
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#ifdef CONFIG_QETH_VLAN
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if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q)) {
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@ -516,6 +516,7 @@ __qeth_set_offline(struct ccwgroup_device *cgdev, int recovery_mode)
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QETH_DBF_TEXT(setup, 3, "setoffl");
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QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
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if (card->dev && netif_carrier_ok(card->dev))
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netif_carrier_off(card->dev);
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recover_flag = card->state;
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if (qeth_stop_card(card, recovery_mode) == -ERESTARTSYS){
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@ -1679,6 +1680,7 @@ qeth_cmd_timeout(unsigned long data)
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spin_unlock_irqrestore(&reply->card->lock, flags);
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}
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static struct qeth_ipa_cmd *
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qeth_check_ipa_data(struct qeth_card *card, struct qeth_cmd_buffer *iob)
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{
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@ -1699,6 +1701,7 @@ qeth_check_ipa_data(struct qeth_card *card, struct qeth_cmd_buffer *iob)
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QETH_CARD_IFNAME(card),
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card->info.chpid);
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card->lan_online = 0;
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if (card->dev && netif_carrier_ok(card->dev))
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netif_carrier_off(card->dev);
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return NULL;
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case IPA_CMD_STARTLAN:
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@ -5579,7 +5582,6 @@ qeth_set_multicast_list(struct net_device *dev)
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return;
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if (qeth_set_thread_start_bit(card, QETH_SET_PROMISC_MODE_THREAD)==0)
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schedule_work(&card->kernel_thread_starter);
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}
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static int
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@ -7452,6 +7454,7 @@ qeth_softsetup_card(struct qeth_card *card)
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card->lan_online = 1;
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if (card->info.type==QETH_CARD_TYPE_OSN)
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goto out;
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qeth_set_large_send(card, card->options.large_send);
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if (card->options.layer2) {
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card->dev->features |=
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NETIF_F_HW_VLAN_FILTER |
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@ -7468,12 +7471,6 @@ qeth_softsetup_card(struct qeth_card *card)
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#endif
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goto out;
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}
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if ((card->options.large_send == QETH_LARGE_SEND_EDDP) ||
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(card->options.large_send == QETH_LARGE_SEND_TSO))
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card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
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else
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card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
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if ((rc = qeth_setadapter_parms(card)))
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QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
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if ((rc = qeth_start_ipassists(card)))
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