bnx2i driver has to wait and cleanup all iscsi endpoints before
returning from bnx2i_stop(). This is to make sure all chip resources
are freed before chip is reset.

As the requirements for 1G and 10G chipsets is different, added
per-device 'hba_shutdown_tmo' parameter to adapter structure

If the connections are not torn down by the daemon within this timeout
period, 'cid's will be leaked in 10G device. 1G devices are more
flexible and do not leak any resources because the whole chip ports
gets reset when MTU is changed or ethtool selftest is run

fixed a minor issue in bnx2i_ep_poll() which unnecessarily forced
error return code when driver timed out waiting for TCP connect
request to complete
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Removed duplicate function call and not-so-useful comment line
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Only affects 5771x (10G chipsets) devices

This is an optimized CQ arming algoritm which takes into account the
number of outstanding tasks
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This issue was discovered during 10G iscsi testing

Default value of 'sq_size' module parameter is '0' which means driver
should use predefined SQ queue size when setting up iscsi connection.

roundup_pow_of_two(0) results in '1' and forces driver to setup
connections with send queue size of '1' and results in lower
performance as well
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

When using iface, bnx2i was unable to offload further connections after all
active sessions are logged out. bnx2i will unregister the device from cnic
when the last connection is torn down. Next call to ep_connect() will fail
because the device is not registered. This issue is not seen if shost == NULL
is passed to ep_connect() call because in that case bnx2i will registers all
known devices with cnic before doing a route look-up.  When shost != NULL,
bnx2i knows the device on which to offload the connection and has to register
this device before attempting to offload the connection
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: NMichael Chan <mchan@broadcom.com>
Reviewed-by Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

convert bnx2i_dev_lock to type mutex from rwlock_t because
cnic->register_device() can sleep for various reasons including memory
allocation, waiting for ISCSI_INIT completion and while acquiring mutex lock,
cnic_lock.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Fixed bnx2i_init_one() to properly handle return code of
cnic->register_device() and propagate it back to the caller.  No need to check
for BNX2I_CNIC_REGISTERED, because unless the adapter is added to adapter_list
it will not be registered in ep_connect context
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Removed bnx2i_reg_devices as this counter is not really
used in a meaningful way
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

New iSCSI driver for Broadcom BNX2 devices.  The driver interfaces with
the CNIC driver to access the hardware.
Signed-off-by: NAnil Veerabhadrappa <anilgv@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>