[patch 2/2] s390: some qeth driver fixes
From: Frank Pavlic <[email protected]>
- 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 <[email protected]>
diffstat:
qeth.h | 112 +++++++++++++++++++++++++-----------------------------------
qeth_eddp.c | 11 ++++-
qeth_main.c | 17 +++------
3 files changed, 63 insertions(+), 77 deletions(-)
diff -Naupr git-orig/drivers/s390/net/qeth_eddp.c git-patched/drivers/s390/net/qeth_eddp.c
--- git-orig/drivers/s390/net/qeth_eddp.c 2006-02-07 10:55:28.000000000 +0100
+++ git-patched/drivers/s390/net/qeth_eddp.c 2006-02-07 11:17:11.000000000 +0100
@@ -59,8 +59,7 @@ qeth_eddp_free_context(struct qeth_eddp_
for (i = 0; i < ctx->num_pages; ++i)
free_page((unsigned long)ctx->pages[i]);
kfree(ctx->pages);
- if (ctx->elements != NULL)
- kfree(ctx->elements);
+ kfree(ctx->elements);
kfree(ctx);
}
@@ -413,6 +412,13 @@ __qeth_eddp_fill_context_tcp(struct qeth
QETH_DBF_TEXT(trace, 5, "eddpftcp");
eddp->skb_offset = sizeof(struct qeth_hdr) + eddp->nhl + eddp->thl;
+ if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
+ eddp->skb_offset += sizeof(struct ethhdr);
+#ifdef CONFIG_QETH_VLAN
+ if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q))
+ eddp->skb_offset += VLAN_HLEN;
+#endif /* CONFIG_QETH_VLAN */
+ }
tcph = eddp->skb->h.th;
while (eddp->skb_offset < eddp->skb->len) {
data_len = min((int)skb_shinfo(eddp->skb)->tso_size,
@@ -483,6 +489,7 @@ qeth_eddp_fill_context_tcp(struct qeth_e
return -ENOMEM;
}
if (qhdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
+ skb->mac.raw = (skb->data) + sizeof(struct qeth_hdr);
memcpy(&eddp->mac, eth_hdr(skb), ETH_HLEN);
#ifdef CONFIG_QETH_VLAN
if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q)) {
diff -Naupr git-orig/drivers/s390/net/qeth.h git-patched/drivers/s390/net/qeth.h
--- git-orig/drivers/s390/net/qeth.h 2006-02-07 10:55:28.000000000 +0100
+++ git-patched/drivers/s390/net/qeth.h 2006-02-07 11:17:11.000000000 +0100
@@ -1076,16 +1076,6 @@ qeth_get_qdio_q_format(struct qeth_card
}
static inline int
-qeth_isdigit(char * buf)
-{
- while (*buf) {
- if (!isdigit(*buf++))
- return 0;
- }
- return 1;
-}
-
-static inline int
qeth_isxdigit(char * buf)
{
while (*buf) {
@@ -1104,33 +1094,17 @@ qeth_ipaddr4_to_string(const __u8 *addr,
static inline int
qeth_string_to_ipaddr4(const char *buf, __u8 *addr)
{
- const char *start, *end;
- char abuf[4];
- char *tmp;
- int len;
- int i;
-
- start = buf;
- for (i = 0; i < 4; i++) {
- if (i == 3) {
- end = strchr(start,0xa);
- if (end)
- len = end - start;
- else
- len = strlen(start);
- }
- else {
- end = strchr(start, '.');
- len = end - start;
- }
- if ((len <= 0) || (len > 3))
- return -EINVAL;
- memset(abuf, 0, 4);
- strncpy(abuf, start, len);
- if (!qeth_isdigit(abuf))
+ int count = 0, rc = 0;
+ int in[4];
+
+ rc = sscanf(buf, "%d.%d.%d.%d%n",
+ &in[0], &in[1], &in[2], &in[3], &count);
+ if (rc != 4 || count)
+ return -EINVAL;
+ for (count = 0; count < 4; count++) {
+ if (in[count] > 255)
return -EINVAL;
- addr[i] = simple_strtoul(abuf, &tmp, 10);
- start = end + 1;
+ addr[count] = in[count];
}
return 0;
}
@@ -1149,36 +1123,44 @@ qeth_ipaddr6_to_string(const __u8 *addr,
static inline int
qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
{
- const char *start, *end;
- u16 *tmp_addr;
- char abuf[5];
- char *tmp;
- int len;
- int i;
-
- tmp_addr = (u16 *)addr;
- start = buf;
- for (i = 0; i < 8; i++) {
- if (i == 7) {
- end = strchr(start,0xa);
- if (end)
- len = end - start;
- else
- len = strlen(start);
+ char *end, *start;
+ __u16 *in;
+ char num[5];
+ int num2, cnt, out, found, save_cnt;
+ unsigned short in_tmp[8] = {0, };
+
+ cnt = out = found = save_cnt = num2 = 0;
+ end = start = (char *) buf;
+ in = (__u16 *) addr;
+ memset(in, 0, 16);
+ while (end) {
+ end = strchr(end,':');
+ if (end == NULL) {
+ end = (char *)buf + (strlen(buf));
+ out = 1;
+ }
+ if ((end - start)) {
+ memset(num, 0, 5);
+ memcpy(num, start, end - start);
+ if (!qeth_isxdigit(num))
+ return -EINVAL;
+ sscanf(start, "%x", &num2);
+ if (found)
+ in_tmp[save_cnt++] = num2;
+ else
+ in[cnt++] = num2;
+ if (out)
+ break;
+ } else {
+ if (found)
+ return -EINVAL;
+ found = 1;
}
- else {
- end = strchr(start, ':');
- len = end - start;
- }
- if ((len <= 0) || (len > 4))
- return -EINVAL;
- memset(abuf, 0, 5);
- strncpy(abuf, start, len);
- if (!qeth_isxdigit(abuf))
- return -EINVAL;
- tmp_addr[i] = simple_strtoul(abuf, &tmp, 16);
- start = end + 1;
- }
+ start = ++end;
+ }
+ cnt = 7;
+ while (save_cnt)
+ in[cnt--] = in_tmp[--save_cnt];
return 0;
}
diff -Naupr git-orig/drivers/s390/net/qeth_main.c git-patched/drivers/s390/net/qeth_main.c
--- git-orig/drivers/s390/net/qeth_main.c 2006-02-07 10:55:28.000000000 +0100
+++ git-patched/drivers/s390/net/qeth_main.c 2006-02-07 11:22:00.000000000 +0100
@@ -516,7 +516,8 @@ __qeth_set_offline(struct ccwgroup_devic
QETH_DBF_TEXT(setup, 3, "setoffl");
QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
- netif_carrier_off(card->dev);
+ if (card->dev && netif_carrier_ok(card->dev))
+ netif_carrier_off(card->dev);
recover_flag = card->state;
if (qeth_stop_card(card, recovery_mode) == -ERESTARTSYS){
PRINT_WARN("Stopping card %s interrupted by user!\n",
@@ -1679,6 +1680,7 @@ qeth_cmd_timeout(unsigned long data)
spin_unlock_irqrestore(&reply->card->lock, flags);
}
+
static struct qeth_ipa_cmd *
qeth_check_ipa_data(struct qeth_card *card, struct qeth_cmd_buffer *iob)
{
@@ -1699,7 +1701,8 @@ qeth_check_ipa_data(struct qeth_card *ca
QETH_CARD_IFNAME(card),
card->info.chpid);
card->lan_online = 0;
- netif_carrier_off(card->dev);
+ if (card->dev && netif_carrier_ok(card->dev))
+ netif_carrier_off(card->dev);
return NULL;
case IPA_CMD_STARTLAN:
PRINT_INFO("Link reestablished on %s "
@@ -5562,7 +5565,7 @@ qeth_set_multicast_list(struct net_devic
if (card->info.type == QETH_CARD_TYPE_OSN)
return ;
- QETH_DBF_TEXT(trace,3,"setmulti");
+ QETH_DBF_TEXT(trace, 3, "setmulti");
qeth_delete_mc_addresses(card);
if (card->options.layer2) {
qeth_layer2_add_multicast(card);
@@ -5579,7 +5582,6 @@ out:
return;
if (qeth_set_thread_start_bit(card, QETH_SET_PROMISC_MODE_THREAD)==0)
schedule_work(&card->kernel_thread_starter);
-
}
static int
@@ -7452,6 +7454,7 @@ qeth_softsetup_card(struct qeth_card *ca
card->lan_online = 1;
if (card->info.type==QETH_CARD_TYPE_OSN)
goto out;
+ qeth_set_large_send(card, card->options.large_send);
if (card->options.layer2) {
card->dev->features |=
NETIF_F_HW_VLAN_FILTER |
@@ -7468,12 +7471,6 @@ qeth_softsetup_card(struct qeth_card *ca
#endif
goto out;
}
- if ((card->options.large_send == QETH_LARGE_SEND_EDDP) ||
- (card->options.large_send == QETH_LARGE_SEND_TSO))
- card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
- else
- card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
-
if ((rc = qeth_setadapter_parms(card)))
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
if ((rc = qeth_start_ipassists(card)))