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Commit 9f48b9db authored by Eugene Crosser's avatar Eugene Crosser Committed by David S. Miller
Browse files

qeth: bridgeport support - address notifications 



Introduce functions to enable and disable bridgeport address
notification feature, sysfs attributes for access to these
functions from userspace, and udev events emitted when a host
joins or exits a bridgeport-enabled HiperSocket channel.

Signed-off-by: default avatarEugene Crosser <eugene.crosser@ru.ibm.com>
Signed-off-by: default avatarFrank Blaschka <frank.blaschka@de.ibm.com>
Reviewed-by: default avatarUrsula Braun <ursula.braun@de.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 59b55a4d

Documentation/s390/qeth.txt

+29 −0
Original line number Diff line number Diff line
@@ -19,3 +19,32 @@ BRIDGEPORT=statechange - indicates that the Bridge Port device changed 
ROLE={primary|secondary|none} - the role assigned to the port.



STATE={active|standby|inactive} - the newly assumed state of the port.



When run on HiperSockets Bridge Capable Port hardware with host address

notifications enabled, a udev event with ACTION=CHANGE is emitted.

It is emitted on behalf of the corresponding ccwgroup device when a host

or a VLAN is registered or unregistered on the network served by the device.

The event has the following attributes:



BRIDGEDHOST={reset|register|deregister|abort} - host address

  notifications are started afresh, a new host or VLAN is registered or

  deregistered on the Bridge Port HiperSockets channel, or address

  notifications are aborted.



VLAN=numeric-vlan-id - VLAN ID on which the event occurred. Not included

  if no VLAN is involved in the event.



MAC=xx:xx:xx:xx:xx:xx - MAC address of the host that is being registered

  or deregistered from the HiperSockets channel. Not reported if the

  event reports the creation or destruction of a VLAN.



NTOK_BUSID=x.y.zzzz - device bus ID (CSSID, SSID and device number).



NTOK_IID=xx - device IID.



NTOK_CHPID=xx - device CHPID.



NTOK_CHID=xxxx - device channel ID.



Note that the NTOK_* attributes refer to devices other than  the one

connected to the system on which the OS is running.

drivers/s390/net/qeth_core.h

+5 −0
Original line number Diff line number Diff line
@@ -169,9 +169,12 @@ enum qeth_sbp_states { 
	QETH_SBP_STATE_ACTIVE	= 2,

};



#define QETH_SBP_HOST_NOTIFICATION 1



struct qeth_sbp_info {

	__u32 supported_funcs;

	enum qeth_sbp_roles role;

	__u32 hostnotification:1;

};



static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
@@ -950,6 +953,8 @@ void qeth_bridgeport_query_support(struct qeth_card *card); 
int qeth_bridgeport_query_ports(struct qeth_card *card,

	enum qeth_sbp_roles *role, enum qeth_sbp_states *state);

int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role);

int qeth_bridgeport_an_set(struct qeth_card *card, int enable);

void qeth_bridge_host_event(struct qeth_card *card, struct qeth_ipa_cmd *cmd);

int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);

int qeth_get_elements_no(struct qeth_card *, struct sk_buff *, int);

int qeth_get_elements_for_frags(struct sk_buff *);

drivers/s390/net/qeth_core_main.c

+3 −0
Original line number Diff line number Diff line
@@ -622,6 +622,9 @@ static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, 
					return NULL;

				} else

					return cmd;

			case IPA_CMD_ADDRESS_CHANGE_NOTIF:

				qeth_bridge_host_event(card, cmd);

				return NULL;

			case IPA_CMD_MODCCID:

				return cmd;

			case IPA_CMD_REGISTER_LOCAL_ADDR:

drivers/s390/net/qeth_core_mpc.c

+1 −0
Original line number Diff line number Diff line
@@ -254,6 +254,7 @@ static struct ipa_cmd_names qeth_ipa_cmd_names[] = { 
	{IPA_CMD_DESTROY_ADDR,	"destroy_addr"},

	{IPA_CMD_REGISTER_LOCAL_ADDR,	"register_local_addr"},

	{IPA_CMD_UNREGISTER_LOCAL_ADDR,	"unregister_local_addr"},

	{IPA_CMD_ADDRESS_CHANGE_NOTIF, "address_change_notification"},

	{IPA_CMD_UNKNOWN,	"unknown"},

};

drivers/s390/net/qeth_core_mpc.h

+38 −0
Original line number Diff line number Diff line
@@ -109,6 +109,7 @@ enum qeth_ipa_cmds { 
	IPA_CMD_DESTROY_ADDR		= 0xc4,

	IPA_CMD_REGISTER_LOCAL_ADDR	= 0xd1,

	IPA_CMD_UNREGISTER_LOCAL_ADDR	= 0xd2,

	IPA_CMD_ADDRESS_CHANGE_NOTIF	= 0xd3,

	IPA_CMD_UNKNOWN			= 0x00

};
@@ -520,6 +521,11 @@ struct net_if_token { 
	__u16 chid;

} __packed;



struct mac_addr_lnid {

	__u8 mac[6];

	__u16 lnid;

} __packed;



struct qeth_ipacmd_sbp_hdr {

	__u32 supported_sbp_cmds;

	__u32 enabled_sbp_cmds;
@@ -583,6 +589,37 @@ struct qeth_ipacmd_setbridgeport { 
	} data;

} __packed;



/* ADDRESS_CHANGE_NOTIFICATION adapter-initiated "command" *******************/

/* Bitmask for entry->change_code. Both bits may be raised.		     */

enum qeth_ipa_addr_change_code {

	IPA_ADDR_CHANGE_CODE_VLANID		= 0x01,

	IPA_ADDR_CHANGE_CODE_MACADDR		= 0x02,

	IPA_ADDR_CHANGE_CODE_REMOVAL		= 0x80,	/* else addition */

};

enum qeth_ipa_addr_change_retcode {

	IPA_ADDR_CHANGE_RETCODE_OK		= 0x0000,

	IPA_ADDR_CHANGE_RETCODE_LOSTEVENTS	= 0x0010,

};

enum qeth_ipa_addr_change_lostmask {

	IPA_ADDR_CHANGE_MASK_OVERFLOW		= 0x01,

	IPA_ADDR_CHANGE_MASK_STATECHANGE	= 0x02,

};



struct qeth_ipacmd_addr_change_entry {

	struct net_if_token token;

	struct mac_addr_lnid addr_lnid;

	__u8 change_code;

	__u8 reserved1;

	__u16 reserved2;

} __packed;



struct qeth_ipacmd_addr_change {

	__u8 lost_event_mask;

	__u8 reserved;

	__u16 num_entries;

	struct qeth_ipacmd_addr_change_entry entry[];

} __packed;



/* Header for each IPA command */

struct qeth_ipacmd_hdr {

	__u8   command;
@@ -613,6 +650,7 @@ struct qeth_ipa_cmd { 
		struct qeth_set_routing			setrtg;

		struct qeth_ipacmd_diagass		diagass;

		struct qeth_ipacmd_setbridgeport	sbp;

		struct qeth_ipacmd_addr_change		addrchange;

	} data;

} __attribute__ ((packed));