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Subject[patch 6/6] s390: network driver.
[patch 6/6] s390: network driver.

From: Frank Pavlic <pavlic@de.ibm.com>
From: Thomas Spatzier <tspat@de.ibm.com>

s390 network driver changes:
- ctc/iucv: Use DECLARE_PER_CPU instead of extern DEFINE_PER_CPU.
- lcs: Always set channel state to CH_STATE_INIT when stopping channels.
- qeth: vlan fixes.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diffstat:
drivers/s390/net/ctcdbug.h | 6 -
drivers/s390/net/iucv.h | 2
drivers/s390/net/lcs.c | 8 -
drivers/s390/net/qeth.h | 4
drivers/s390/net/qeth_main.c | 241 ++++++++++++++++++++-----------------------
5 files changed, 126 insertions(+), 135 deletions(-)

diff -urN linux-2.6/drivers/s390/net/ctcdbug.h linux-2.6-patched/drivers/s390/net/ctcdbug.h
--- linux-2.6/drivers/s390/net/ctcdbug.h 2004-10-18 23:53:51.000000000 +0200
+++ linux-2.6-patched/drivers/s390/net/ctcdbug.h 2004-10-22 13:51:46.000000000 +0200
@@ -1,6 +1,6 @@
/*
*
- * linux/drivers/s390/net/ctcdbug.h ($Revision: 1.3 $)
+ * linux/drivers/s390/net/ctcdbug.h ($Revision: 1.4 $)
*
* CTC / ESCON network driver - s390 dbf exploit.
*
@@ -9,7 +9,7 @@
* Author(s): Original Code written by
* Peter Tiedemann (ptiedem@de.ibm.com)
*
- * $Revision: 1.3 $ $Date: 2004/07/28 12:27:54 $
+ * $Revision: 1.4 $ $Date: 2004/10/15 09:26:58 $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -59,7 +59,7 @@
debug_event(ctc_dbf_##name,level,(void*)(addr),len); \
} while (0)

-extern DEFINE_PER_CPU(char[256], ctc_dbf_txt_buf);
+DECLARE_PER_CPU(char[256], ctc_dbf_txt_buf);
extern debug_info_t *ctc_dbf_setup;
extern debug_info_t *ctc_dbf_data;
extern debug_info_t *ctc_dbf_trace;
diff -urN linux-2.6/drivers/s390/net/iucv.h linux-2.6-patched/drivers/s390/net/iucv.h
--- linux-2.6/drivers/s390/net/iucv.h 2004-10-22 13:51:36.000000000 +0200
+++ linux-2.6-patched/drivers/s390/net/iucv.h 2004-10-22 13:51:46.000000000 +0200
@@ -63,7 +63,7 @@
debug_event(iucv_dbf_##name,level,(void*)(addr),len); \
} while (0)

-extern DEFINE_PER_CPU(char[256], iucv_dbf_txt_buf);
+DECLARE_PER_CPU(char[256], iucv_dbf_txt_buf);

#define IUCV_DBF_TEXT_(name,level,text...) \
do { \
diff -urN linux-2.6/drivers/s390/net/lcs.c linux-2.6-patched/drivers/s390/net/lcs.c
--- linux-2.6/drivers/s390/net/lcs.c 2004-10-18 23:53:21.000000000 +0200
+++ linux-2.6-patched/drivers/s390/net/lcs.c 2004-10-22 13:51:46.000000000 +0200
@@ -11,7 +11,7 @@
* Frank Pavlic (pavlic@de.ibm.com) and
* Martin Schwidefsky <schwidefsky@de.ibm.com>
*
- * $Revision: 1.92 $ $Date: 2004/09/03 08:06:11 $
+ * $Revision: 1.94 $ $Date: 2004/10/19 09:30:54 $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -59,7 +59,7 @@
/**
* initialization string for output
*/
-#define VERSION_LCS_C "$Revision: 1.92 $"
+#define VERSION_LCS_C "$Revision: 1.94 $"

static char version[] __initdata = "LCS driver ("VERSION_LCS_C "/" VERSION_LCS_H ")";
static char debug_buffer[255];
@@ -549,6 +549,7 @@
return 0;
LCS_DBF_TEXT(4,trace,"haltsch");
LCS_DBF_TEXT_(4,trace,"%s", channel->ccwdev->dev.bus_id);
+ channel->state = CH_STATE_INIT;
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_halt(channel->ccwdev, (addr_t) channel);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
@@ -1357,6 +1358,7 @@

LCS_DBF_TEXT_(5, trace, "Rint%s",cdev->dev.bus_id);
LCS_DBF_TEXT_(5, trace, "%4x%4x",irb->scsw.cstat, irb->scsw.dstat);
+ LCS_DBF_TEXT_(5, trace, "%4x%4x",irb->scsw.fctl, irb->scsw.actl);

/* How far in the ccw chain have we processed? */
if ((channel->state != CH_STATE_INIT) &&
@@ -1624,8 +1626,6 @@
/* start/reset card */
if (card->dev)
netif_stop_queue(card->dev);
- card->write.state = CH_STATE_INIT;
- card->read.state = CH_STATE_INIT;
rc = lcs_stop_channels(card);
if (rc == 0) {
rc = lcs_start_channels(card);
diff -urN linux-2.6/drivers/s390/net/qeth.h linux-2.6-patched/drivers/s390/net/qeth.h
--- linux-2.6/drivers/s390/net/qeth.h 2004-10-22 13:51:36.000000000 +0200
+++ linux-2.6-patched/drivers/s390/net/qeth.h 2004-10-22 13:51:46.000000000 +0200
@@ -92,7 +92,7 @@
debug_event(qeth_dbf_##name,level,(void*)(addr),len); \
} while (0)

-extern DEFINE_PER_CPU(char[256], qeth_dbf_txt_buf);
+DECLARE_PER_CPU(char[256], qeth_dbf_txt_buf);

#define QETH_DBF_TEXT_(name,level,text...) \
do { \
@@ -740,8 +740,6 @@
#ifdef CONFIG_QETH_VLAN
spinlock_t vlanlock;
struct vlan_group *vlangrp;
- __u8 vlans_current[VLAN_GROUP_ARRAY_LEN/(8*sizeof(__u8))];
- __u8 vlans_new[VLAN_GROUP_ARRAY_LEN/(8*sizeof(__u8))];
#endif
struct work_struct kernel_thread_starter;
spinlock_t thread_mask_lock;
diff -urN linux-2.6/drivers/s390/net/qeth_main.c linux-2.6-patched/drivers/s390/net/qeth_main.c
--- linux-2.6/drivers/s390/net/qeth_main.c 2004-10-22 13:51:36.000000000 +0200
+++ linux-2.6-patched/drivers/s390/net/qeth_main.c 2004-10-22 13:51:46.000000000 +0200
@@ -1,6 +1,6 @@
/*
*
- * linux/drivers/s390/net/qeth_main.c ($Revision: 1.145 $)
+ * linux/drivers/s390/net/qeth_main.c ($Revision: 1.155 $)
*
* Linux on zSeries OSA Express and HiperSockets support
*
@@ -12,7 +12,7 @@
* Frank Pavlic (pavlic@de.ibm.com) and
* Thomas Spatzier <tspat@de.ibm.com>
*
- * $Revision: 1.145 $ $Date: 2004/10/08 15:08:40 $
+ * $Revision: 1.155 $ $Date: 2004/10/21 13:27:46 $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -78,7 +78,7 @@
#include "qeth_mpc.h"
#include "qeth_fs.h"

-#define VERSION_QETH_C "$Revision: 1.145 $"
+#define VERSION_QETH_C "$Revision: 1.155 $"
static const char *version = "qeth S/390 OSA-Express driver";

/**
@@ -2153,8 +2153,9 @@
qeth_type_trans(struct sk_buff *skb, struct net_device *dev)
{
struct qeth_card *card;
+ struct ethhdr *eth;

- QETH_DBF_TEXT(trace,5,"typtrans");
+ QETH_DBF_TEXT(trace,6,"typtrans");

card = (struct qeth_card *)dev->priv;
#ifdef CONFIG_TR
@@ -2162,7 +2163,23 @@
(card->info.link_type == QETH_LINK_TYPE_LANE_TR))
return tr_type_trans(skb,dev);
#endif /* CONFIG_TR */
- return eth_type_trans(skb,dev);
+ skb->mac.raw = skb->data;
+ skb_pull(skb, ETH_HLEN );
+ eth = eth_hdr(skb);
+
+ if (*eth->h_dest & 1) {
+ if (memcmp(eth->h_dest, dev->broadcast, ETH_ALEN) == 0)
+ skb->pkt_type = PACKET_BROADCAST;
+ else
+ skb->pkt_type = PACKET_MULTICAST;
+ } else if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN))
+ skb->pkt_type = PACKET_OTHERHOST;
+
+ if (ntohs(eth->h_proto) >= 1536)
+ return eth->h_proto;
+ if (*(unsigned short *) (skb->data) == 0xFFFF)
+ return htons(ETH_P_802_3);
+ return htons(ETH_P_802_2);
}

static inline void
@@ -2234,26 +2251,21 @@
qeth_layer2_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
- __u32 cast_type = 0;
- __u16 rc = 0;
+ unsigned short vlan_id = 0;

- cast_type = *(__u32 *) hdr->hdr.l2.flags;
- if (cast_type & (QETH_LAYER2_FLAG_UNICAST << 8))
- skb->pkt_type = PACKET_HOST;
- else if (cast_type & (QETH_LAYER2_FLAG_MULTICAST << 8))
- skb->pkt_type = PACKET_MULTICAST;
- else if (cast_type & (QETH_LAYER2_FLAG_BROADCAST << 8))
- skb->pkt_type = PACKET_BROADCAST;
+ skb->pkt_type = PACKET_HOST;
+ if (card->options.checksum_type == NO_CHECKSUMMING)
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
else
- skb->pkt_type = PACKET_HOST;
+ skb->ip_summed = CHECKSUM_NONE;
#ifdef CONFIG_QETH_VLAN
- if (cast_type & (QETH_LAYER2_FLAG_VLAN << 8)) {
- rc = hdr->hdr.l2.vlan_id;
+ if (hdr->hdr.l2.flags[2] & (QETH_LAYER2_FLAG_VLAN)) {
skb_pull(skb, VLAN_HLEN);
+ vlan_id = hdr->hdr.l2.vlan_id;
}
#endif
- skb->protocol = qeth_type_trans(skb, card->dev);
- return rc;
+ skb->protocol = qeth_type_trans(skb, skb->dev);
+ return vlan_id;
}

static inline void
@@ -2261,7 +2273,8 @@
struct qeth_hdr *hdr)
{
#ifdef CONFIG_QETH_IPV6
- if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU){
+ if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
+ skb->pkt_type = PACKET_HOST;
skb->protocol = qeth_type_trans(skb, card->dev);
return;
}
@@ -2322,6 +2335,7 @@
#endif
while((skb = qeth_get_next_skb(card, buf->buffer, &element,
&offset, &hdr))) {
+ skb->dev = card->dev;
if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2)
vlan_tag = qeth_layer2_rebuild_skb(card, skb, hdr);
else
@@ -2331,13 +2345,12 @@
dev_kfree_skb_any(skb);
continue;
}
- skb->dev = card->dev;
#ifdef CONFIG_QETH_VLAN
if (vlan_tag)
vlan_hwaccel_rx(skb, card->vlangrp, vlan_tag);
else
#endif
- rxrc = netif_rx(skb);
+ rxrc = netif_rx(skb);
card->dev->last_rx = jiffies;
card->stats.rx_packets++;
card->stats.rx_bytes += skb->len;
@@ -3621,7 +3634,8 @@
*skb = new_skb;
}
#ifdef CONFIG_QETH_VLAN
- if (card->vlangrp && vlan_tx_tag_present(*skb) && (ipv == 6)){
+ if (card->vlangrp && vlan_tx_tag_present(*skb) &&
+ ((ipv == 6) || card->options.layer2) ) {
/*
* Move the mac addresses (6 bytes src, 6 bytes dest)
* to the beginning of the new header. We are using three
@@ -3631,14 +3645,13 @@
memcpy((*skb)->data, (*skb)->data + 4, 4);
memcpy((*skb)->data + 4, (*skb)->data + 8, 4);
memcpy((*skb)->data + 8, (*skb)->data + 12, 4);
- tag = (u16 *) (*skb)->data + 12;
+ tag = (u16 *)((*skb)->data + 12);
/*
* first two bytes = ETH_P_8021Q (0x8100)
* second two bytes = VLANID
*/
*tag = __constant_htons(ETH_P_8021Q);
- *(tag + 1) = vlan_tx_tag_get(*skb);
- *(tag + 1) = htons(*(tag + 1));
+ *(tag + 1) = htons(vlan_tx_tag_get(*skb));
}
#endif
*hdr = (struct qeth_hdr *) skb_push(*skb, sizeof(struct qeth_hdr));
@@ -3734,7 +3747,7 @@
qeth_layer2_get_packet_type(card, hdr, skb);

hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
-#ifdef QETH_VLAN
+#ifdef CONFIG_QETH_VLAN
/* VSWITCH relies on the VLAN
* information to be present in
* the QDIO header */
@@ -4793,7 +4806,6 @@
}

#ifdef CONFIG_QETH_VLAN
-static void qeth_layer2_process_vlans(struct qeth_card *);
static void
qeth_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
{
@@ -4806,8 +4818,6 @@
spin_lock_irqsave(&card->vlanlock, flags);
card->vlangrp = grp;
spin_unlock_irqrestore(&card->vlanlock, flags);
- if (card->options.layer2)
- qeth_layer2_process_vlans(card);
}

static inline void
@@ -4902,12 +4912,69 @@
}

static void
+qeth_layer2_send_setdelvlan(struct qeth_card *card, __u16 i,
+ enum qeth_ipa_cmds ipacmd)
+{
+ int rc;
+ struct qeth_ipa_cmd *cmd;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT_(trace, 4, "L2sdv%x",ipacmd);
+ iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.setdelvlan.vlan_id = i;
+
+ rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
+ if (rc) {
+ PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. "
+ "Continuing\n",i, card->info.if_name, rc);
+ QETH_DBF_TEXT_(trace, 2, "L2VL%4x", ipacmd);
+ QETH_DBF_TEXT_(trace, 2, "L2%s", CARD_BUS_ID(card));
+ QETH_DBF_TEXT_(trace, 2, "err%d", rc);
+ }
+}
+
+static void
+qeth_layer2_process_vlans(struct qeth_card *card, int clear)
+{
+ unsigned short i;
+
+ QETH_DBF_TEXT(trace, 3, "L2prcvln");
+
+ if (!card->vlangrp)
+ return;
+ for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+ if (card->vlangrp->vlan_devices[i] == NULL)
+ continue;
+ if (clear)
+ qeth_layer2_send_setdelvlan(card, i, IPA_CMD_DELVLAN);
+ else
+ qeth_layer2_send_setdelvlan(card, i, IPA_CMD_SETVLAN);
+ }
+}
+
+/*add_vid is layer 2 used only ....*/
+static void
+qeth_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
+{
+ struct qeth_card *card;
+
+ QETH_DBF_TEXT_(trace, 4, "aid:%d", vid);
+
+ card = (struct qeth_card *) dev->priv;
+ if (!card->options.layer2)
+ return;
+ qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
+}
+
+/*... kill_vid used for both modes*/
+static void
qeth_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
{
struct qeth_card *card;
unsigned long flags;

- QETH_DBF_TEXT(trace,4,"vlkilvid");
+ QETH_DBF_TEXT_(trace, 4, "kid:%d", vid);

card = (struct qeth_card *) dev->priv;
/* free all skbs for the vlan device */
@@ -4920,7 +4987,7 @@
card->vlangrp->vlan_devices[vid] = NULL;
spin_unlock_irqrestore(&card->vlanlock, flags);
if (card->options.layer2)
- qeth_layer2_process_vlans(card);
+ qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
if ( (qeth_set_thread_start_bit(card, QETH_SET_IP_THREAD) == 0) ||
(qeth_set_thread_start_bit(card, QETH_SET_MC_THREAD) == 0) )
schedule_work(&card->kernel_thread_starter);
@@ -5328,93 +5395,6 @@
return rc;
}

-#ifdef CONFIG_QETH_VLAN
-/* ATT: not a very readable order: bytes count from lower numbers, bits
- count from lsb */
-static void
-qeth_layer2_set_bit(__u8 *ptr,int i)
-{
- ptr[i/8]|=0x80>>(i%8);
-}
-
-static int
-qeth_layer2_get_bit(__u8 *ptr,int i)
-{
- return (ptr[i/8]&(0x80>>(i%8)))?1:0;
-}
-
-static void
-qeth_layer2_takeover_vlans(struct qeth_card *card)
-{
- int i;
-
- QETH_DBF_TEXT(trace, 3, "L2tkvlan");
- /* copy new to current */
- memcpy(&card->vlans_current[0],
- &card->vlans_new[0],
- VLAN_GROUP_ARRAY_LEN/(8*sizeof(__u8)));
-
- /* clear new vector */
- memset(&card->vlans_new[0], 0,
- VLAN_GROUP_ARRAY_LEN/(8*sizeof(__u8)));
-
- for (i=0; i<VLAN_GROUP_ARRAY_LEN; i++) {
- if ( (card->vlangrp) &&
- (card->vlangrp->vlan_devices[i]) )
- qeth_layer2_set_bit(&card->vlans_new[0], i);
- }
-}
-
-static void
-qeth_layer2_send_setdelvlan(struct qeth_card *card, __u16 i,
- enum qeth_ipa_cmds ipacmd)
-{
- int rc;
- struct qeth_ipa_cmd *cmd;
- struct qeth_cmd_buffer *iob;
-
- QETH_DBF_TEXT(trace, 4, "L2sdvlan");
- iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
- cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
- cmd->data.setdelvlan.vlan_id = i;
-
- rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
- if (rc) {
- PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. "
- "Continuing\n",i, card->info.if_name, rc);
- QETH_DBF_TEXT_(trace, 2, "L2VL%4x", ipacmd);
- QETH_DBF_TEXT_(trace, 2, "L2%s", CARD_BUS_ID(card));
- QETH_DBF_TEXT_(trace, 2, "err%d", rc);
- }
-}
-
-static void
-qeth_layer2_register_vlans(struct qeth_card *card)
-{
- __u16 i;
-
- QETH_DBF_TEXT(trace, 3, "L2regvln");
- for (i=0; i<VLAN_GROUP_ARRAY_LEN; i++) {
- if ( (qeth_layer2_get_bit(&card->vlans_current[0], i)) &&
- (!qeth_layer2_get_bit(&card->vlans_new[0], i)) )
- qeth_layer2_send_setdelvlan(card, i, IPA_CMD_DELVLAN);
- if ( (!qeth_layer2_get_bit(&card->vlans_current[0], i)) &&
- (qeth_layer2_get_bit(&card->vlans_new[0], i)) )
- qeth_layer2_send_setdelvlan(card, i, IPA_CMD_SETVLAN);
- }
-}
-
-static void
-qeth_layer2_process_vlans(struct qeth_card *card)
-{
- QETH_DBF_TEXT(trace, 2, "L2provln");
-
- qeth_layer2_takeover_vlans(card);
- qeth_layer2_register_vlans(card);
-}
-
-#endif
-
static int
qeth_layer2_register_addr_entry(struct qeth_card *card,
struct qeth_ipaddr *addr)
@@ -5575,6 +5555,7 @@
#ifdef CONFIG_QETH_VLAN
dev->vlan_rx_register = qeth_vlan_rx_register;
dev->vlan_rx_kill_vid = qeth_vlan_rx_kill_vid;
+ dev->vlan_rx_add_vid = qeth_vlan_rx_add_vid;
#endif
if (qeth_get_netdev_flags(card) & IFF_NOARP) {
dev->rebuild_header = NULL;
@@ -5596,9 +5577,8 @@
if ((card->options.fake_broadcast) ||
(card->info.broadcast_capable))
dev->flags |= IFF_BROADCAST;
-
dev->hard_header_len =
- qeth_get_hlen(card->info.link_type) + card->options.add_hhlen;
+ qeth_get_hlen(card->info.link_type) + card->options.add_hhlen;
dev->addr_len = OSA_ADDR_LEN;
dev->mtu = card->info.initial_mtu;

@@ -6187,7 +6167,10 @@
card->info.if_name, rc);
} else {
PRINT_INFO("VLAN enabled \n");
- card->dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+ card->dev->features |=
+ NETIF_F_HW_VLAN_FILTER |
+ NETIF_F_HW_VLAN_TX |
+ NETIF_F_HW_VLAN_RX;
}
#endif /* QETH_VLAN */
return rc;
@@ -6559,6 +6542,7 @@
card->lan_online = 1;
if (card->options.layer2) {
card->dev->features |=
+ NETIF_F_HW_VLAN_FILTER |
NETIF_F_HW_VLAN_TX |
NETIF_F_HW_VLAN_RX;
card->dev->flags|=IFF_MULTICAST|IFF_BROADCAST;
@@ -6568,7 +6552,7 @@
return rc;
}
#ifdef CONFIG_QETH_VLAN
- qeth_layer2_process_vlans(card);
+ qeth_layer2_process_vlans(card, 0);
#endif
goto out;
}
@@ -6737,6 +6721,10 @@
card->state = CARD_STATE_SOFTSETUP;
}
if (card->state == CARD_STATE_SOFTSETUP) {
+#ifdef CONFIG_QETH_VLAN
+ if (card->options.layer2)
+ qeth_layer2_process_vlans(card, 1);
+#endif
qeth_clear_ip_list(card, !card->use_hard_stop, recover_flag);
qeth_clear_ipacmd_list(card);
card->state = CARD_STATE_HARDSETUP;
@@ -7019,7 +7007,12 @@
}
/*maybe it was set offline without ifconfig down
* we can also use this state for recovery purposes*/
- qeth_set_allowed_threads(card, 0xffffffff, 0);
+ if (card->options.layer2)
+ qeth_set_allowed_threads(card,
+ QETH_RECOVER_THREAD |
+ QETH_SET_MC_THREAD,0);
+ else
+ qeth_set_allowed_threads(card, 0xffffffff, 0);
if (recover_flag == CARD_STATE_RECOVER)
qeth_start_again(card);
qeth_notify_processes();
-
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