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We service 2 queues (kcq1 and kcq2) in cnic_service_bnx2x_bh(). If
the status block index has changed when servicing the kcq2, we must
go back and check kcq1. The latest status block index will be used
to acknowledge the interrupt, and without looping back to check kcq1,
we may miss events on kcq1.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The status block index is used to acknowledge interrupt events and must
be read before checking for the interrupt events, so we need to add rmb()
to guarantee that.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The chip's page tables did not set up properly on big endian machines,
causing EEH errors on PPC machines.
Reported-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The new firmware interface requires each Slow Path Queue (SPQ) message's
type field to include the function number. The existing code does not
do this consistently. We fix this by OR'ing in the function number
into the type field centrally in cnic_submit_kwqe_16().
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We should call bnx2i to send the iSCSI netlink message earlier in
cnic_unregister_device(). By the time cnic_unregister_driver() is
called, bnx2i may have freed data structures used by the upcalls.
Update version to 2.2.12.
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Because the hardware does not yet support these in this mode.
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We are leaking memory in drivers/net/cnic.c::cnic_alloc_uio_rings() if
either of the calls to dma_alloc_coherent() fail. This patch fixes it by
freeing both the memory allocated with kzalloc() and memory allocated with
previous calls to dma_alloc_coherent() when there's a failure.
Thanks to Joe Perches <joe@perches.com> for suggesting a better
implementation than my initial version.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Connection ID (cid) management
- Slow-path command and response support
- Update version to 2.2.11.
Reviewed-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The kcq2 (2nd kernel work queue) is used by FCoE on 57712 devices.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If we get a path_resp error from userspace, call cm_connect_complete()
immediately with error so that bnx2i can react to the error faster.
Signed-off-by: Eddie Wai <waie@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If the device is down, the kcq pointer may be NULL.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a common function cnic_read_bnx2x_iscsi_mac() to read the iSCSI
MAC address at any specified shared memory location. In NIC Partition
mode, we need to get the MAC address from the MF_CFG area of shared
memory.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use the IDs specified by the bnx2x driver when initializing the ring.
We don't have to make code changes when these IDs change in the future.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1. Change first parameter from cnic_dev to ulp_handle which is the hba
pointer. All other similar upcalls are using hba pointer. The callee
can then directly reference the hba without conversion.
2. Change return value from void to int so that an error code can be
passed back. This allows the operation to be retried.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
cnic_dev_list is protected by rtnl_lock and cnic_dev_lock spin_lock during
modifications. When looping on cnic_dev_list and calling ->cnic_init(),
we should just hold rtnl_lock since ->cnic_init() may sleep.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pass the TCP port parameter for iSCSI connections to the firmware in
proper endian order.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add new interrupt ack functions and other hardware interface logic to
support the new device.
Update version to 2.2.6.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
During cnic shutdown, the original driver code requires userspace to
close the uio device within a few seconds. This doesn't always happen
as the userapp may be hung or otherwise take a long time to close. The
system may crash when this happens.
We fix the problem by decoupling the uio structures from the cnic
structures during cnic shutdown. We do not unregister the uio device
until the cnic driver is unloaded. This eliminates the unreliable wait
loop for uio to close.
All uio structures are kept in a linked list. If the device is shutdown
and later brought back up again, the uio strcture will be found in the
linked list and coupled back to the cnic structures.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
and put all uio related structures and ring buffers in it. This allows
uio operations to be done independent of the cnic device structures.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The bnx2x devices require a 2 second quiet time before sending the last
RAMROD command to destroy a connection. This sleep wait adds up to a
long delay when iscsid is serially destroying maultiple connections.
Create a workqueue to perform the final connection cleanup in the
background to speed up the process. This significantly speeds up the
process as the wait time can be done in parallel for multiple connections.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Refactoring code for the next patch to defer connection clean up.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
so that we can additional bit definitions without requiring a spinlock.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
to reduce some duplicate code. Also, use tasklet_kill() in
cnic_free_irq() to wait for the cnic_irq_task to complete.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Return proper L2 and L5 SPQ (slow path queue) credits. Previously, all
SPQ events were counted as L5 types.
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is the new FW HSI blob and the relevant definitions without logic changes.
It also included code adaptation for new HSI. New features are not enabled.
New FW/HSI includes:
- Support for 57712 HW
- Future support for VF (not used)
- Improvements in FW interrupts scheme
- FW FCoE hooks (stubs for future usage)
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Initialize the rings only during cnic_uio_open() and shut them down
during cnic_uio_close(). Check for the new bit CNIC_LCL_FL_RINGS_INITED
before checking for ring interrupt.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The pfid (physical function ID) is the same as PCI function on production
devices. The pfid for future devices will be different and will be used
for internal memory offsets.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Preparation work for upcoming firmware interface changes.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
These changes may be slightly safer in some instances.
There are other kzalloc calls with a multiply, but those
calls are typically "small fixed #" * sizeof(some pointer)"
and those are not converted.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit includes files movement to newly created folder
using git-mv command and fixes references in cnic and bnx2x code
to each other.
files moved using following:
#!/bin/bash
mkdir drivers/net/bnx2x/
list=$(cd drivers/net/ && ls bnx2x*.[ch])
for f in $list; do
git mv -f drivers/net/$f drivers/net/bnx2x/$f
done
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This eliminates some of the duplicate code for the various devices
that require the same basic kcq handling.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
By doing more work in the common function cnic_get_kcqes(), and
making full use of the kcq_info structure.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
By creating a common data stucture kcq_info for all devices, the kcq
(kernel completion queue) for all devices can be allocated by common
code.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current code makes assumptions about the CID (context ID) memory
space and starting CID that may not be always correct when firmware
changes. In particular, BNX2_ISCSI_START_CID may not always be fixed.
We now calculate cp->max_cid_space and cp->iscsi_start_cid dynamically
instead of using fixed constants. The unused cp->max_iscsi_conn is also
eliminated.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Disable statistics initialization for eth clients that do not support
statistics. This prevents memory corruption on bnx2x hw.
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Fix the code that handles the error case when cnic_cm_abort() cannot
proceed normally. We cannot just set the csk->state and we must
go through cnic_ready_to_close() to handle all the conditions. We
also add error return code in cnic_cm_abort().
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eddie Wai <waie@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Combine RESET_RECEIVED and RESET_COMP logic and fix race condition
between these 2 events and cnic_cm_close(). In particular, we need
to (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) before we
update csk->state.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eddie Wai <waie@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move chip-specific code to the respective chip's ->close_conn() functions
for better code organization.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eddie Wai <waie@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
So that bnx2i can handle the error condition immediately and not have to
wait for timeout.
Signed-off-by: Michael Chan <mchan@broadcom.com.
Signed-off-by: Eddie Wai <waie@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
remove useless union keyword in rtable, rt6_info and dn_route.
Since there is only one member in a union, the union keyword isn't useful.
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We need to zero context memory on 5709 in the function cnic_init_context().
Without this, iscsid restart on 5709 will not work because of stale data.
TX context blocks should not be initialized by cnic_init_context() because
of the special remapping on 5709.
Update version to 2.1.2.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Everytime the iSCSI ring finishes setup or shutdown, we need to return
the SPQ (slow path queue) credit to the bnx2x driver. Without this step,
the SPQ will eventually be full causing iSCSI to fail. This can happen
after 3 or 4 MTU changes for example.
Add code to wait for these slow path commands to complete in the RX ring
and return the SPQ credit to bnx2x.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It is easier to expand the flags for other purposes because it does
not require a spin_lock. The next bug fix patch needs a flag in
cnic_local_flags.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch removes from drivers/net/ all the unnecessary
return; statements that precede the last closing brace of
void functions.
It does not remove the returns that are immediately
preceded by a label as gcc doesn't like that.
It also does not remove null void functions with return.
Done via:
$ grep -rP --include=*.[ch] -l "return;\n}" net/ | \
xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }'
with some cleanups by hand.
Compile tested x86 allmodconfig only.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
cnic_service_bnx2x() irq handler can be called during chip reset from
MTU change. Need to check that the cnic's device state is up before
handling the irq.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
