[PATCH] s390: introducing support in qeth for new OSA CHPID type OSN

	This patch introduces new feature in qeth:
	qeth enhancement provides the device driver support for
        the Communication Controller for Linux on System z9 and zSeries
        (CCL), which is software that enables running the Network Control
        Program (NCP) on a zSeries machine. The OSA CDLC support is based
        on a new IBM mainframe CHPID type called Open Systems Adaper for
        NCP (OSN). In case of OSN qeth communicates with the type-OSN
        OSA-card on one hand, and with the CCL-kernel-component Network
        Device Handler (NDH) on the other.
Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/s390/net/qeth.h

@@ -275,6 +275,10 @@ qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
 	QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT, \
 	QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT, \
 	QETH_MAX_QUEUES,0x103}, \
+	{0x1731,0x06,0x1732,0x06,QETH_CARD_TYPE_OSN,0, \
+	QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
+	QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
+	QETH_MAX_QUEUES,0}, \
 	{0,0,0,0,0,0,0,0,0}}
 
 #define QETH_REAL_CARD		1
@@ -363,10 +367,22 @@ struct qeth_hdr_layer2 {
 	__u8 reserved2[16];
 } __attribute__ ((packed));
 
+struct qeth_hdr_osn {
+	__u8 id;
+	__u8 reserved;
+	__u16 seq_no;
+	__u16 reserved2;
+	__u16 control_flags;
+	__u16 pdu_length;
+	__u8 reserved3[18];
+	__u32 ccid;
+} __attribute__ ((packed));
+					    
 struct qeth_hdr {
 	union {
 		struct qeth_hdr_layer2 l2;
 		struct qeth_hdr_layer3 l3;
+		struct qeth_hdr_osn    osn;
 	} hdr;
 } __attribute__ ((packed));
 
@@ -413,6 +429,7 @@ enum qeth_header_ids {
 	QETH_HEADER_TYPE_LAYER3 = 0x01,
 	QETH_HEADER_TYPE_LAYER2 = 0x02,
 	QETH_HEADER_TYPE_TSO	= 0x03,
+	QETH_HEADER_TYPE_OSN    = 0x04,
 };
 /* flags for qeth_hdr.ext_flags */
 #define QETH_HDR_EXT_VLAN_FRAME       0x01
@@ -582,7 +599,6 @@ enum qeth_card_states {
  * Protocol versions
  */
 enum qeth_prot_versions {
-	QETH_PROT_SNA  = 0x0001,
 	QETH_PROT_IPV4 = 0x0004,
 	QETH_PROT_IPV6 = 0x0006,
 };
@@ -761,6 +777,11 @@ enum qeth_threads {
 	QETH_RECOVER_THREAD = 2,
 };
 
+struct qeth_osn_info {
+	int (*assist_cb)(struct net_device *dev, void *data);
+	int (*data_cb)(struct sk_buff *skb);
+};
+
 struct qeth_card {
 	struct list_head list;
 	enum qeth_card_states state;
@@ -803,6 +824,7 @@ struct qeth_card {
 	int use_hard_stop;
 	int (*orig_hard_header)(struct sk_buff *,struct net_device *,
 				unsigned short,void *,void *,unsigned);
+	struct qeth_osn_info osn_info; 
 };
 
 struct qeth_card_list_struct {
@@ -916,10 +938,12 @@ qeth_get_hlen(__u8 link_type)
 static inline unsigned short
 qeth_get_netdev_flags(struct qeth_card *card)
 {
-	if (card->options.layer2)
+	if (card->options.layer2 &&
+	   (card->info.type == QETH_CARD_TYPE_OSAE))
 		return 0;
 	switch (card->info.type) {
 	case QETH_CARD_TYPE_IQD:
+	case QETH_CARD_TYPE_OSN:	
 		return IFF_NOARP;
 #ifdef CONFIG_QETH_IPV6
 	default:
@@ -956,9 +980,10 @@ static inline int
 qeth_get_max_mtu_for_card(int cardtype)
 {
 	switch (cardtype) {
+		
 	case QETH_CARD_TYPE_UNKNOWN:
-		return 61440;
 	case QETH_CARD_TYPE_OSAE:
+	case QETH_CARD_TYPE_OSN:
 		return 61440;
 	case QETH_CARD_TYPE_IQD:
 		return 57344;
@@ -1004,6 +1029,7 @@ qeth_mtu_is_valid(struct qeth_card * card, int mtu)
 	case QETH_CARD_TYPE_IQD:
 		return ((mtu >= 576) &&
 			(mtu <= card->info.max_mtu + 4096 - 32));
+	case QETH_CARD_TYPE_OSN:
 	case QETH_CARD_TYPE_UNKNOWN:
 	default:
 		return 1;
@@ -1015,6 +1041,7 @@ qeth_get_arphdr_type(int cardtype, int linktype)
 {
 	switch (cardtype) {
 	case QETH_CARD_TYPE_OSAE:
+	case QETH_CARD_TYPE_OSN:
 		switch (linktype) {
 		case QETH_LINK_TYPE_LANE_TR:
 		case QETH_LINK_TYPE_HSTR:
@@ -1182,4 +1209,16 @@ qeth_fill_header(struct qeth_card *, struct qeth_hdr *,
 extern void
 qeth_flush_buffers(struct qeth_qdio_out_q *, int, int, int);
 
+extern int
+qeth_osn_assist(struct net_device *, void *, int);
+
+extern int
+qeth_osn_register(unsigned char *read_dev_no,
+                 struct net_device **,
+                 int (*assist_cb)(struct net_device *, void *),
+                 int (*data_cb)(struct sk_buff *));
+
+extern void
+qeth_osn_deregister(struct net_device *);
+		
 #endif /* __QETH_H__ */

drivers/s390/net/qeth_fs.h

@@ -12,7 +12,7 @@
 #ifndef __QETH_FS_H__
 #define __QETH_FS_H__
 
-#define VERSION_QETH_FS_H "$Revision: 1.9 $"
+#define VERSION_QETH_FS_H "$Revision: 1.10 $"
 
 extern const char *VERSION_QETH_PROC_C;
 extern const char *VERSION_QETH_SYS_C;
@@ -42,6 +42,12 @@ qeth_create_device_attributes(struct device *dev);
 extern void
 qeth_remove_device_attributes(struct device *dev);
 
+extern int
+qeth_create_device_attributes_osn(struct device *dev);
+
+extern void
+qeth_remove_device_attributes_osn(struct device *dev);
+		    
 extern int
 qeth_create_driver_attributes(void);
 
@@ -108,6 +114,8 @@ qeth_get_cardname(struct qeth_card *card)
 			return " OSD Express";
 		case QETH_CARD_TYPE_IQD:
 			return " HiperSockets";
+		case QETH_CARD_TYPE_OSN:
+			return " OSN QDIO";
 		default:
 			return " unknown";
 		}
@@ -153,6 +161,8 @@ qeth_get_cardname_short(struct qeth_card *card)
 			}
 		case QETH_CARD_TYPE_IQD:
 			return "HiperSockets";
+		case QETH_CARD_TYPE_OSN:
+			return "OSN";
 		default:
 			return "unknown";
 		}

drivers/s390/net/qeth_mpc.c

@@ -11,7 +11,7 @@
 #include <asm/cio.h>
 #include "qeth_mpc.h"
 
-const char *VERSION_QETH_MPC_C = "$Revision: 1.11 $";
+const char *VERSION_QETH_MPC_C = "$Revision: 1.12 $";
 
 unsigned char IDX_ACTIVATE_READ[]={
 	0x00,0x00,0x80,0x00, 0x00,0x00,0x00,0x00,
@@ -138,7 +138,9 @@ unsigned char IPA_PDU_HEADER[]={
 		sizeof(struct qeth_ipa_cmd)%256,
 	0x00,
 		sizeof(struct qeth_ipa_cmd)/256,
-		sizeof(struct qeth_ipa_cmd),0x05, 0x77,0x77,0x77,0x77,
+		sizeof(struct qeth_ipa_cmd)%256,
+	0x05,
+	0x77,0x77,0x77,0x77,
 	0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,
 	0x01,0x00,
 		sizeof(struct qeth_ipa_cmd)/256,

drivers/s390/net/qeth_mpc.h

@@ -46,13 +46,16 @@ extern unsigned char IPA_PDU_HEADER[];
 /* IP Assist related definitions                                             */
 /*****************************************************************************/
 #define IPA_CMD_INITIATOR_HOST  0x00
-#define IPA_CMD_INITIATOR_HYDRA 0x01
+#define IPA_CMD_INITIATOR_OSA   0x01
+#define IPA_CMD_INITIATOR_HOST_REPLY  0x80
+#define IPA_CMD_INITIATOR_OSA_REPLY   0x81
 #define IPA_CMD_PRIM_VERSION_NO 0x01
 
 enum qeth_card_types {
 	QETH_CARD_TYPE_UNKNOWN = 0,
 	QETH_CARD_TYPE_OSAE    = 10,
 	QETH_CARD_TYPE_IQD     = 1234,
+	QETH_CARD_TYPE_OSN     = 11,
 };
 
 #define QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE 0x18
@@ -61,6 +64,7 @@ enum qeth_link_types {
 	QETH_LINK_TYPE_FAST_ETH     = 0x01,
 	QETH_LINK_TYPE_HSTR         = 0x02,
 	QETH_LINK_TYPE_GBIT_ETH     = 0x03,
+	QETH_LINK_TYPE_OSN          = 0x04,
 	QETH_LINK_TYPE_10GBIT_ETH   = 0x10,
 	QETH_LINK_TYPE_LANE_ETH100  = 0x81,
 	QETH_LINK_TYPE_LANE_TR      = 0x82,
@@ -111,6 +115,9 @@ enum qeth_ipa_cmds {
 	IPA_CMD_DELGMAC 	      = 0x24,
 	IPA_CMD_SETVLAN 	      = 0x25,
 	IPA_CMD_DELVLAN 	      = 0x26,
+	IPA_CMD_SETCCID               = 0x41,
+	IPA_CMD_DELCCID               = 0x42,
+	IPA_CMD_MODCCID               = 0x43,
 	IPA_CMD_SETIP                 = 0xb1,
 	IPA_CMD_DELIP                 = 0xb7,
 	IPA_CMD_QIPASSIST             = 0xb2,
@@ -437,8 +444,9 @@ enum qeth_ipa_arp_return_codes {
 #define QETH_ARP_DATA_SIZE 3968
 #define QETH_ARP_CMD_LEN (QETH_ARP_DATA_SIZE + 8)
 /* Helper functions */
-#define IS_IPA_REPLY(cmd) (cmd->hdr.initiator == IPA_CMD_INITIATOR_HOST)
-
+#define IS_IPA_REPLY(cmd) ((cmd->hdr.initiator == IPA_CMD_INITIATOR_HOST) || \
+			   (cmd->hdr.initiator == IPA_CMD_INITIATOR_OSA_REPLY))
+	
 /*****************************************************************************/
 /* END OF   IP Assist related definitions                                    */
 /*****************************************************************************/
@@ -483,6 +491,7 @@ extern unsigned char ULP_ENABLE[];
 /* Layer 2 defintions */
 #define QETH_PROT_LAYER2 0x08
 #define QETH_PROT_TCPIP  0x03
+#define QETH_PROT_OSN2   0x0a     
 #define QETH_ULP_ENABLE_PROT_TYPE(buffer) (buffer+0x50)
 #define QETH_IPA_CMD_PROT_TYPE(buffer) (buffer+0x19)
 

drivers/s390/net/qeth_sys.c

 /*
  *
- * linux/drivers/s390/net/qeth_sys.c ($Revision: 1.54 $)
+ * linux/drivers/s390/net/qeth_sys.c ($Revision: 1.55 $)
  *
  * Linux on zSeries OSA Express and HiperSockets support
  * This file contains code related to sysfs.
@@ -20,7 +20,7 @@
 #include "qeth_mpc.h"
 #include "qeth_fs.h"
 
-const char *VERSION_QETH_SYS_C = "$Revision: 1.54 $";
+const char *VERSION_QETH_SYS_C = "$Revision: 1.55 $";
 
 /*****************************************************************************/
 /*                                                                           */
@@ -937,6 +937,19 @@ static struct attribute_group qeth_device_attr_group = {
 	.attrs = (struct attribute **)qeth_device_attrs,
 };
 
+static struct device_attribute * qeth_osn_device_attrs[] = {
+	&dev_attr_state,
+	&dev_attr_chpid,
+	&dev_attr_if_name,
+	&dev_attr_card_type,
+	&dev_attr_buffer_count,
+	&dev_attr_recover,
+	NULL,
+};
+
+static struct attribute_group qeth_osn_device_attr_group = {
+	.attrs = (struct attribute **)qeth_osn_device_attrs,
+};
 
 #define QETH_DEVICE_ATTR(_id,_name,_mode,_show,_store)			     \
 struct device_attribute dev_attr_##_id = {				     \
@@ -1667,7 +1680,12 @@ int
 qeth_create_device_attributes(struct device *dev)
 {
 	int ret;
+	struct qeth_card *card = dev->driver_data;
 
+	if (card->info.type == QETH_CARD_TYPE_OSN)
+		return sysfs_create_group(&dev->kobj,
+					  &qeth_osn_device_attr_group);
+   	
 	if ((ret = sysfs_create_group(&dev->kobj, &qeth_device_attr_group)))
 		return ret;
 	if ((ret = sysfs_create_group(&dev->kobj, &qeth_device_ipato_group))){
@@ -1693,6 +1711,12 @@ qeth_create_device_attributes(struct device *dev)
 void
 qeth_remove_device_attributes(struct device *dev)
 {
+	struct qeth_card *card = dev->driver_data;
+
+	if (card->info.type == QETH_CARD_TYPE_OSN)
+		return sysfs_remove_group(&dev->kobj,
+					  &qeth_osn_device_attr_group);
+		      
 	sysfs_remove_group(&dev->kobj, &qeth_device_attr_group);
 	sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
 	sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);