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There is no need for an indirection before calling the dma alloc
routines now that we store a struct device in struct fore200e.
Also remove the pointless GFP_ATOMIC for the sbus case, and fix the
up the error handling by removing the 0 dma_addr test - some iommus
can return 0 as a perfectly valid bus address.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no need for an indirection before calling the dma mapping
routines now that we store a struct device in struct fore200e.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no need for this field, as the only user of it can just use
the local size variable instead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This can be used much better than the untyped void pointer containing
either a PCI or platform device.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no need to have a global array of the ops, instead PCI and sbus
can have their own instances assigned in *_probe. Also switch to C99
initializers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Because the function __skb_get_hash_symmetric always returns non-zero.
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Wang Li <wangli39@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Implement ethtool .set_coalesce (-C) and .get_coalesce (-c) handlers.
Interrupt moderation is currently not supported, so these accept and
display the default settings of 0 usec and 1 frame.
Toggle tx napi through setting tx-frames. So as to not interfere
with possible future interrupt moderation, value 1 means tx napi while
value 0 means not.
Only allow the switching when device is down for simplicity.
Link: https://patchwork.ozlabs.org/patch/948149/
Suggested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jakub Kicinski says:
====================
nfp: flower: speed up stats update loop
This set from Pieter improves performance of processing FW stats
update notifications. The FW seems to send those at relatively
high rate (roughly ten per second per flow), therefore if we want
to approach the million flows mark we have to be very careful
about our data structures.
We tried rhashtable for stat updates, but according to our experiments
rhashtable lookup on a u32 takes roughly 60ns on an Xeon E5-2670 v3.
Which translate to a hard limit of 16M lookups per second on this CPU,
and, according to perf record jhash and memcmp account for 60% of CPU
usage on the core handling the updates.
Given that our statistic IDs are already array indices, and considering
each statistic is only 24B in size, we decided to forego the use
of hashtables and use a directly indexed array. The CPU savings are
considerable.
With the recent improvements in TC core and with our own bottlenecks
out of the way Pieter removes the artificial limit of 128 flows, and
allows the driver to install as many flows as FW supports.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Read the host context count symbols provided by firmware and use
it to determine the number of allocated stats ids. Previously it
won't be possible to offload more than 2^17 filter even if FW was
able to do so.
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make use of an array stats instead of storing stats per flow which
would require a hash lookup at critical times.
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make use of relativistic hash tables for tracking flows instead
of fixed sized hash tables.
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Clang warns when multiple sets of parentheses are used for a single
conditional statement.
drivers/isdn/hisax/amd7930_fn.c:628:32: warning: equality comparison
with extraneous parentheses [-Wparentheses-equality]
if ((cs->dc.amd7930.ph_state == 8)) {
~~~~~~~~~~~~~~~~~~~~~~~~^~~~
drivers/isdn/hisax/amd7930_fn.c:628:32: note: remove extraneous
parentheses around the comparison to silence this warning
if ((cs->dc.amd7930.ph_state == 8)) {
~ ^ ~
drivers/isdn/hisax/amd7930_fn.c:628:32: note: use '=' to turn this
equality comparison into an assignment
if ((cs->dc.amd7930.ph_state == 8)) {
^~
=
1 warning generated.
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Fix packet reception code
Here are a set of patches that prepares for and fix problems in rxrpc's
package reception code. There serious problems are:
(A) There's a window between binding the socket and setting the data_ready
hook in which packets can find their way into the UDP socket's receive
queues.
(B) The skb_recv_udp() will return an error (and clear the error state) if
there was an error on the Tx side. rxrpc doesn't handle this.
(C) The rxrpc data_ready handler doesn't fully drain the UDP receive
queue.
(D) The rxrpc data_ready handler assumes it is called in a non-reentrant
state.
The second patch fixes (A) - (C); the third patch renders (B) and (C)
non-issues by using the recap_rcv hook instead of data_ready - and the
final patch fixes (D). That last is the most complex.
The preparatory patches are:
(1) Fix some places that are doing things in the wrong net namespace.
(2) Stop taking the rcu read lock as it's held by the IP input routine in
the call chain.
(3) Only end the Tx phase if *we* rotated the final packet out of the Tx
buffer.
(4) Don't assume that the call state won't change after dropping the
call_state lock.
(5) Only take receive window and MTU suze parameters from an ACK packet if
it's the latest ACK packet.
(6) Record connection-level abort information correctly.
(7) Fix a trace line.
And then there are three main patches - note that these are mixed in with
the preparatory patches somewhat:
(1) Fix the setup window (A), skb_recv_udp() error check (B) and packet
drainage (C).
(2) Switch to using the encap_rcv instead of data_ready to cut out the
effects of the UDP read queues and get the packets delivered directly.
(3) Add more locking into the various packet input paths to defend against
re-entrance (D).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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DCTCP has two parts - a new ECN signalling mechanism and the response
function to it. The first part can be used by other congestion
control for DCTCP-ECN deployed networks. This patch moves that part
into a separate tcp_dctcp.h to be used by other congestion control
module (like how Yeah uses Vegas algorithmas). For example, BBR is
experimenting such ECN signal currently
https://tinyurl.com/ietf-102-iccrg-bbr2
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Yousuk Seung <ysseung@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ipv6_route_table_template is exported but there are no users outside
of route.c. Make it static.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The NLM_F_DUMP_PROPER_HDR netlink flag was replaced by a setsockopt.
Update the comment in rtnl_stats_dump.
Fixes: 841891ec0c65 ("rtnetlink: Update rtnl_stats_dump for strict data checking")
Reported-by: Christian Brauner <christian@brauner.io>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move setting of local variable ifm to after the message parsing in
valid_fdb_dump_legacy. Avoid potential future use of unchecked variable.
Fixes: 8dfbda19a21b ("rtnetlink: Move input checking for rtnl_fdb_dump to helper")
Reported-by: Christian Brauner <christian@brauner.io>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel says:
====================
mlxsw: selftests: Few small updates
First patch fixes a typo in mlxsw.
Second patch fixes a race in a recent test.
Third patch makes a recent test executable.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is a self-standing test and as such should be itself executable.
Fixes: b5638d46c90a ("selftests: mlxsw: Add a test for UC behavior under MC flood")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Immediately after mlxsw module is probed and lldpad started, added APP
entries are briefly in "unknown" state before becoming "pending". That's
the state that lldpad_app_wait_set() typically sees, and since there are
no pending entries at that time, it bails out. However the entries have
not been pushed to the kernel yet at that point, and thus the test case
fails.
Fix by waiting for both unknown and pending entries to disappear before
proceeding.
Fixes: d159261f3662 ("selftests: mlxsw: Add test for trust-DSCP")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Nir Dotan <nird@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In rds_send_mprds_hash(), if the calculated hash value is non-zero and
the MPRDS connections are not yet up, it will wait. But it should not
wait if the send is non-blocking. In this case, it should just use the
base c_path for sending the message.
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Mike writes:
"device mapper fix for 4.19 final
- Fix for earlier 4.19 final DM linear change that incorrectly
checked for CONFIG_DM_ZONED rather than CONFIG_BLK_DEV_ZONED."
* tag 'for-4.19/dm-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm linear: fix linear_end_io conditional definition
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There are several variables being initialized that are being set later
and hence the initialization is redundant and can be removed. Remove
then.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Dave writes:
"xfs: fixes for 4.19-rc7
Update for 4.19-rc7 to fix numerous file clone and deduplication issues."
* tag 'xfs-fixes-for-4.19-rc7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: fix data corruption w/ unaligned reflink ranges
xfs: fix data corruption w/ unaligned dedupe ranges
xfs: update ctime and remove suid before cloning files
xfs: zero posteof blocks when cloning above eof
xfs: refactor clonerange preparation into a separate helper
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The dm-linear target is independent of the dm-zoned target. For code
requiring support for zoned block devices, use CONFIG_BLK_DEV_ZONED
instead of CONFIG_DM_ZONED.
While at it, similarly to dm linear, also enable the DM_TARGET_ZONED_HM
feature in dm-flakey only if CONFIG_BLK_DEV_ZONED is defined.
Fixes: beb9caac211c1 ("dm linear: eliminate linear_end_io call if CONFIG_DM_ZONED disabled")
Fixes: 0be12c1c7fce7 ("dm linear: add support for zoned block devices")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Mike writes:
"device mapper fixes for 4.19 final
- Fix a DM cache module init error path bug that doesn't properly
cleanup a KMEM_CACHE if target registration fails.
- Two stable@ fixes for DM zoned target; 4.20 will have changes that
eliminate this code entirely but <= 4.19 needs these changes."
* tag 'for-4.19/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm linear: eliminate linear_end_io call if CONFIG_DM_ZONED disabled
dm: fix report zone remapping to account for partition offset
dm cache: destroy migration_cache if cache target registration failed
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Steven writes:
"vsprint fix:
It was reported that trace_printk() was not reporting properly
values that came after a dereference pointer.
trace_printk() utilizes vbin_printf() and bstr_printf() to keep the
overhead of tracing down. vbin_printf() does not do any conversions
and just stors the string format and the raw arguments into the
buffer. bstr_printf() is used to read the buffer and does the
conversions to complete the printf() output.
This can be troublesome with dereferenced pointers because the
reference may be different from the time vbin_printf() is called to
the time bstr_printf() is called. To fix this, a prior commit changed
vbin_printf() to convert dereferenced pointers into strings and load
the converted string into the buffer. But the change to bstr_printf()
had an off-by-one error and didn't account for the nul character at
the end of the string and this corrupted the rest of the values in
the format that came after a dereferenced pointer."
* tag 'trace-v4.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
vsprintf: Fix off-by-one bug in bstr_printf() processing dereferenced pointers
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Rob writes:
"Devicetree fixes for 4.19, part 3:
- Fix DT unittest on Oldworld MAC systems"
* tag 'devicetree-fixes-for-4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: unittest: Disable interrupt node tests for old world MAC systems
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The function that puts back the MR in cache also removes the DMA address
from the HCA. Therefore we need to call this function before we remove
the DMA mapping from MMU. Otherwise the HCA may access a memory that
is no longer DMA mapped.
Call trace:
NMI: IOCK error (debug interrupt?) for reason 71 on CPU 0.
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.0-rc6+ #4
Hardware name: HP ProLiant DL360p Gen8, BIOS P71 08/20/2012
RIP: 0010:intel_idle+0x73/0x120
Code: 80 5c 01 00 0f ae 38 0f ae f0 31 d2 65 48 8b 04 25 80 5c 01 00 48 89 d1 0f 60 02
RSP: 0018:ffffffff9a403e38 EFLAGS: 00000046
RAX: 0000000000000030 RBX: 0000000000000005 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff9a5790c0 RDI: 0000000000000000
RBP: 0000000000000030 R08: 0000000000000000 R09: 0000000000007cf9
R10: 000000000000030a R11: 0000000000000018 R12: 0000000000000000
R13: ffffffff9a5792b8 R14: ffffffff9a5790c0 R15: 0000002b48471e4d
FS: 0000000000000000(0000) GS:ffff9c6caf400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5737185000 CR3: 0000000590c0a002 CR4: 00000000000606f0
Call Trace:
cpuidle_enter_state+0x7e/0x2e0
do_idle+0x1ed/0x290
cpu_startup_entry+0x6f/0x80
start_kernel+0x524/0x544
? set_init_arg+0x55/0x55
secondary_startup_64+0xa4/0xb0
DMAR: DRHD: handling fault status reg 2
DMAR: [DMA Read] Request device [04:00.0] fault addr b34d2000 [fault reason 06] PTE Read access is not set
DMAR: [DMA Read] Request device [01:00.2] fault addr bff8b000 [fault reason 06] PTE Read access is not set
Fixes: f3f134f5260a ("RDMA/mlx5: Fix crash while accessing garbage pointer and freed memory")
Signed-off-by: Valentine Fatiev <valentinef@mellanox.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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syzbot managed to crash in skb_checksum_help() [1] :
BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
Root cause is the following check in skb_partial_csum_set()
if (unlikely(start > skb_headlen(skb)) ||
unlikely((int)start + off > skb_headlen(skb) - 2))
return false;
If skb_headlen(skb) is 1, then (skb_headlen(skb) - 2) becomes 0xffffffff
and the check fails to detect that ((int)start + off) is off the limit,
since the compare is unsigned.
When we fix that, then the first condition (start > skb_headlen(skb))
becomes obsolete.
Then we should also check that (skb_headroom(skb) + start) wont
overflow 16bit field.
[1]
kernel BUG at net/core/dev.c:2880!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7330 Comm: syz-executor4 Not tainted 4.19.0-rc6+ #253
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:skb_checksum_help+0x9e3/0xbb0 net/core/dev.c:2880
Code: 85 00 ff ff ff 48 c1 e8 03 42 80 3c 28 00 0f 84 09 fb ff ff 48 8b bd 00 ff ff ff e8 97 a8 b9 fb e9 f8 fa ff ff e8 2d 09 76 fb <0f> 0b 48 8b bd 28 ff ff ff e8 1f a8 b9 fb e9 b1 f6 ff ff 48 89 cf
RSP: 0018:ffff8801d83a6f60 EFLAGS: 00010293
RAX: ffff8801b9834380 RBX: ffff8801b9f8d8c0 RCX: ffffffff8608c6d7
RDX: 0000000000000000 RSI: ffffffff8608cc63 RDI: 0000000000000006
RBP: ffff8801d83a7068 R08: ffff8801b9834380 R09: 0000000000000000
R10: ffff8801d83a76d8 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000010001 R14: 000000000000ffff R15: 00000000000000a8
FS: 00007f1a66db5700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7d77f091b0 CR3: 00000001ba252000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
skb_csum_hwoffload_help+0x8f/0xe0 net/core/dev.c:3269
validate_xmit_skb+0xa2a/0xf30 net/core/dev.c:3312
__dev_queue_xmit+0xc2f/0x3950 net/core/dev.c:3797
dev_queue_xmit+0x17/0x20 net/core/dev.c:3838
packet_snd net/packet/af_packet.c:2928 [inline]
packet_sendmsg+0x422d/0x64c0 net/packet/af_packet.c:2953
Fixes: 5ff8dda3035d ("net: Ensure partial checksum offset is inside the skb head")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Moshe Shemesh says:
====================
devlink param type string fixes
This patchset fixes devlink param infrastructure for string param type.
The devlink param infrastructure doesn't handle copying the string data
correctly. The first two patches fix it and the third patch adds helper
function to safely copy string value without exceeding
DEVLINK_PARAM_MAX_STRING_VALUE.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Devlink string param buffer is allocated at the size of
DEVLINK_PARAM_MAX_STRING_VALUE. Add helper function which makes sure
this size is not exceeded.
Renamed DEVLINK_PARAM_MAX_STRING_VALUE to
__DEVLINK_PARAM_MAX_STRING_VALUE to emphasize that it should be used by
devlink only. The driver should use the helper function instead to
verify it doesn't exceed the allowed length.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Driverinit configuration mode value is held by devlink to enable the
driver fetch the value after reload command. In case the param type is
string devlink should copy the value from driver string buffer to
devlink string buffer on devlink_param_driverinit_value_set() and
vice-versa on devlink_param_driverinit_value_get().
Fixes: ec01aeb1803e ("devlink: Add support for get/set driverinit value")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In case devlink param type is string, it needs to copy the string value
it got from the input to devlink_param_value.
Fixes: e3b7ca18ad7b ("devlink: Add param set command")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some samples require headers installation, so commit 3fca1700c4c3
("kbuild: make samples really depend on headers_install") added
such dependency in the top Makefile. However, UML fails to build
with CONFIG_SAMPLES=y because UML does not support headers_install.
Fixes: 3fca1700c4c3 ("kbuild: make samples really depend on headers_install")
Reported-by: Kees Cook <keescook@chromium.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Sunil Goutham says:
====================
octeontx2-af: Add RVU Admin Function driver
Resource virtualization unit (RVU) on Marvell's OcteonTX2 SOC maps HW
resources from the network, crypto and other functional blocks into
PCI-compatible physical and virtual functions. Each functional block
again has multiple local functions (LFs) for provisioning to PCI devices.
RVU supports multiple PCIe SRIOV physical functions (PFs) and virtual
functions (VFs). PF0 is called the administrative / admin function (AF)
and has privileges to provision RVU functional block's LFs to each of the
PF/VF.
RVU managed networking functional blocks
- Network pool allocator (NPA)
- Network interface controller (NIX)
- Network parser CAM (NPC)
- Schedule/Synchronize/Order unit (SSO)
RVU managed non-networking functional blocks
- Crypto accelerator (CPT)
- Scheduled timers unit (TIM)
- Schedule/Synchronize/Order unit (SSO)
Used for both networking and non networking usecases
- Compression (upcoming in future variants of the silicons)
Resource provisioning examples
- A PF/VF with NIX-LF & NPA-LF resources works as a pure network device
- A PF/VF with CPT-LF resource works as a pure cyrpto offload device.
This admin function driver neither receives any data nor processes it i.e
no I/O, a configuration only driver.
PF/VFs communicates with AF via a shared memory region (mailbox). Upon
receiving requests from PF/VF, AF does resource provisioning and other
HW configuration. AF is always attached to host, but PF/VFs may be used
by host kernel itself, or attached to VMs or to userspace applications
like DPDK etc. So AF has to handle provisioning/configuration requests
sent by any device from any domain.
This patch series adds logic for the following
- RVU AF driver with functional blocks provisioning support.
- Mailbox infrastructure for communication between AF and PFs.
- CGX (MAC controller) driver which communicates with firmware for
managing physical ethernet interfaces. AF collects info from this
driver and forwards the same to the PF/VFs uaing these interfaces.
This is the first set of patches out of 80+ patches.
Changes from v8:
1 Removed unnecessary typecasts in entire series
- Suggested by David Miller
2 Added COMPILE_TEST to AF driver
- Suggested by Arnd Bergmann
3 Changed udelay() to usleep_range() in rvu_poll_reg
- Suggested by Arnd Bergmann
4 MSIX vector base IOMMU mapping is done using dma_map_resource()
API instead of dma_map_single() as it accepts physical address.
- Issue pointed by Arnd Bergmann
Changes from v7:
1 Removed unnecessary typecasts in mbox infra code.
- Suggested by David Miller
2 Fixed MAINTAINERS patch
- Suggested by Joe Perches
Changes from v6:
Fixed ordering of local variables from longest to shortest line.
- Suggested by David Miller
Changes from v5:
Modified bitfield based command structures to bitmasks for communication
with firmware, to address endianness issues.
- Suggested by Arnd Bergmann
Changes from v4:
1 Removed module author/version/description from CGX driver as it's now
merged with AF driver module.
- Suggested by Arnd Bergmann
2 Added big-endian bitfields for CGX's kernel <=> firmware communication
command structures.
- Suggested by Arnd Bergmann
Changes from v3:
Moved driver from drivers/soc to drivers/net/ethernet
- Suggested by Arnd Bergmann
https://patchwork.kernel.org/cover/10587635/
Changes from v2:
No changes, submitted again with netdev mailing list in loop.
- Suggested by Arnd Bergmann and Andrew Lunn
Changes from v1:
1 Merged RVU admin function and CGX drivers into a single module
- Suggested by Arnd Bergmann
2 Pulled mbox communication APIs into a separate module to remove
admin function driver dependency in a VM where AF is not attached.
- Suggested by Arnd Bergmann
====================
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Added maintainers entry for Marvell OcteonTX2 SOC's RVU
admin function driver.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Added support in RVU AF driver to register for
CGX LMAC link status change events from firmware
and managing them. Processing part will be added
in followup patches.
- Introduced eventqueue for posting events from cgx lmac.
Queueing mechanism will ensure that events can be posted
and firmware can be acked immediately and hence event
reception and processing are decoupled.
- Events gets added to the queue by notification callback.
Notification callback is expected to be atomic, since it
is called from interrupt context.
- Events are dequeued and processed in a worker thread.
Signed-off-by: Linu Cherian <lcherian@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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CGX LMAC initialization, link status polling etc is done
by low level secure firmware. For link management this patch
adds a interface or communication mechanism between firmware
and this kernel CGX driver.
- Firmware interface specification is defined in cgx_fw_if.h.
- Support to send/receive commands/events to/form firmware.
- events/commands implemented
* link up
* link down
* reading firmware version
Signed-off-by: Linu Cherian <lcherian@marvell.com>
Signed-off-by: Nithya Mani <nmani@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Each of the enabled CGX LMAC is considered a physical
interface and RVU PFs are mapped to these. VFs of these
SRIOV PFs will be virtual interfaces and share CGX LMAC
along with PF.
This mapping info will be used later on for Rx/Tx pkt steering.
Signed-off-by: Linu Cherian <lcherian@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds basic template for Marvell OcteonTX2's
CGX ethernet interface driver. Just the probe.
RVU AF driver will use APIs exported by this driver
for various things like PF to physical interface mapping,
loopback mode, interface stats etc. Hence marged both
drivers into a single module.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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HW interprets RVU_AF_MSIXTR_BASE address as an IOVA, hence
create a IOMMU mapping for the physcial address configured by
firmware and reconfig RVU_AF_MSIXTR_BASE with IOVA.
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Firmware configures a certain number of MSIX vectors to each of
enabled RVU PF/VF. When a block LF is attached to a PF/VF, number
of MSIX vectors needed by that LF are set aside (out of PF/VF's
total MSIX vectors) and LF's msix_offset is configured in HW.
Also added support for a RVU PF/VF to retrieve that block LF's
MSIX vector offset information from AF via mbox.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Added support for a RVU PF/VF to request AF via mailbox
to attach or detach NPA/NIX/SSO/SSOW/TIM/CPT block LFs.
Also supports partial detachment and modifying current
LF attached count of a certian block type.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Scan all RVU blocks to find any 'LF to RVU PF/VF' mapping done by
low level firmware. If found any, mark them as used in respective
block's LF bitmap and also save mapped PF/VF's PF_FUNC info.
This is done to avoid reattaching a block LF to a different RVU PF/VF.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With 10's of mailbox messages expected to be handled in future,
checking for message id could become a lengthy switch case. Hence
added a macro to auto generate the switch case for each msg id.
Signed-off-by: Aleksey Makarov <amakarov@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds support for mailbox interrupt and message
handling. Mapped mailbox region and registered a workqueue
for message handling. Enabled mailbox IRQ of RVU PFs
and registered a interrupt handler. When IRQ is triggered
work is added to the mbox workqueue for msgs to get processed.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds mailbox support infrastructure APIs.
Each RVU device has a dedicated 64KB mailbox region
shared with it's peer for communication. RVU AF has
a separate mailbox region shared with each of RVU PFs
and a RVU PF has a separate region shared with each of
it's VF.
These set of APIs are used by this driver (RVU AF) and
other RVU PF/VF drivers eg netdev, crypto e.t.c.
Signed-off-by: Aleksey Makarov <amakarov@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Lukasz Bartosik <lbartosik@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch gathers NPA/NIX/SSO/SSOW/TIM/CPT RVU blocks's
HW info like number of LFs. Important register offsets
saved for later use to avoid code duplication for each block.
A bitmap is allocated for each of the blocks which later
on will be used to allocate a LF for a RVU PF/VF.
Also added RVU NIX/NPA block registers and few registers
of other blocks.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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