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The slow path ulp_init and ulp_exit calls to the bnx2i driver
are sleepable calls and therefore should not be protected using
rcu_read_lock. Fix it by using mutex and refcount during these
calls. cnic_unregister_driver() will now wait for the refcount
to go to zero before completing the call.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ingo molnar <mingo@elte.hu> reported the error
drivers/net/cnic.c:2520: error: implicit declaration of function ‘__symbol_get’
when CONFIG_MODULES is not defined. Fix by using symbol_get() instead.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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The CNIC driver controls BNX2 hardware rings and resources used by
iSCSI. Most hardware resources for iSCSI are separate from those
used for ethernet networking.
iSCSI uses a separate MAC address and IP address. The CNIC driver
creates a UIO interface to handle the non-offloaded packets such as
ARP, etc in userspace.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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