openwrt/staging/blogic.git
5 years agoath10k: Extended the HTT stats support to retrieve Mu-MIMO related stats
Maharaja Kennadyrajan [Wed, 27 Feb 2019 11:24:41 +0000 (16:54 +0530)]
ath10k: Extended the HTT stats support to retrieve Mu-MIMO related stats

Extended the bit mask value of the HTT stats to get the Mu-MIMO
related stats via tracing.

Signed-off-by: Maharaja Kennadyrajan <mkenna@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: remove HALP for Talyn devices
Maya Erez [Fri, 26 Apr 2019 15:43:37 +0000 (18:43 +0300)]
wil6210: remove HALP for Talyn devices

In Talyn the HW is responsible for power management enter / exit
flow, hence the deep sleep exit latency is significantly shorter than
in Sparrow.
In such a case HALP feature, that is meant to prevent long PCIe blocking
accesses, is no longer needed and can be removed for Talyn.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: check rx_buff_mgmt before accessing it
Dedy Lansky [Fri, 26 Apr 2019 15:43:36 +0000 (18:43 +0300)]
wil6210: check rx_buff_mgmt before accessing it

Make sure rx_buff_mgmt is initialized before accessing it.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: fix missed MISC mbox interrupt
Maya Erez [Fri, 26 Apr 2019 15:43:35 +0000 (18:43 +0300)]
wil6210: fix missed MISC mbox interrupt

When MISC interrupt is triggered due to HALP bit, in parallel
to mbox events handling by the MISC threaded IRQ, new mbox
interrupt can be missed in the following scenario:
1. MISC ICR is read in the IRQ handler
2. Threaded IRQ is completed and all MISC interrupts are unmasked
3. mbox interrupt is set by FW
4. HALP is masked
The mbox interrupt in step 3 can be missed due to constant high level
of ICM.
Masking all MISC IRQs instead of masking only HALP bit in step 4
will guarantee that ICM will drop to 0 and interrupt will be triggered
once MISC interrupts will be unmasked.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: fix overwriting max_assoc_sta module param
Ahmad Masri [Fri, 26 Apr 2019 15:43:34 +0000 (18:43 +0300)]
wil6210: fix overwriting max_assoc_sta module param

Save the parameter of max_assoc_sta per device.
On fw_ready event calculate the max_assoc_sta and save it per device,
do not overwrite the max_assoc_sta module param.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: enhancements for descriptor and status ring debugfs
Dedy Lansky [Fri, 26 Apr 2019 15:43:33 +0000 (18:43 +0300)]
wil6210: enhancements for descriptor and status ring debugfs

Add printing of hwhead as part of desc ring and status ring debugfs.
Validate wil->rx_buff_mgmt and ring->ctx arrays before accessing them.
Dump Tx descriptor content even when it indicates invalid buff_id.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: add support for multiple sections in brd file
Maya Erez [Fri, 26 Apr 2019 15:43:32 +0000 (18:43 +0300)]
wil6210: add support for multiple sections in brd file

Current board file loading procedure assumes that the board file
includes only one section.
New board files can include multiple sections.
Add the ability to read multiple addresses and max size from FW
file and load multiple sections from the board file into those
addresses.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: add printout of platform capabilities
Dedy Lansky [Fri, 26 Apr 2019 15:43:31 +0000 (18:43 +0300)]
wil6210: add printout of platform capabilities

Add logging of the platform capabilities after retrieving it from the
platform driver.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: fix _desc access in __wil_tx_vring_tso
Alexei Avshalom Lazar [Fri, 26 Apr 2019 15:43:30 +0000 (18:43 +0300)]
wil6210: fix _desc access in __wil_tx_vring_tso

_desc is defined in __wil_tx_vring_tso() and may not be set in
case len is 0, verify _desc is set.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: fix spurious interrupts in 3-msi
Maya Erez [Fri, 26 Apr 2019 15:43:29 +0000 (18:43 +0300)]
wil6210: fix spurious interrupts in 3-msi

Interrupt is set in ICM (ICR & ~IMV) rising trigger.
As the driver masks the IRQ after clearing it, there can
be a race where an additional spurious interrupt is triggered
when the driver unmask the IRQ.
This can happen in case HW triggers an interrupt after the clear
and before the mask.

To prevent the second spurious interrupt the driver needs to mask the
IRQ before reading and clearing it.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowireless: carl9170: fix clang build warning
Arnd Bergmann [Mon, 25 Mar 2019 12:43:44 +0000 (13:43 +0100)]
wireless: carl9170: fix clang build warning

clang fails to eliminate some dead code with always-taken branches
when CONFIG_PROFILE_ANNOTATED_BRANCHES is set, leading to a false-positive
warning:

drivers/net/wireless/ath/carl9170/mac.c:522:3: error: variable 'power' is used uninitialized whenever 'if' condition is
      false [-Werror,-Wsometimes-uninitialized]
                BUG_ON(1);
                ^~~~~~~~~

Change both instances of BUG_ON(1) in carl9170 to the simpler BUG()
to avoid the warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agowil6210: fix potential out-of-bounds read
Gustavo A. R. Silva [Mon, 15 Apr 2019 14:56:46 +0000 (09:56 -0500)]
wil6210: fix potential out-of-bounds read

Notice that *rc* can evaluate to up to 5, include/linux/netdevice.h:

enum gro_result {
        GRO_MERGED,
        GRO_MERGED_FREE,
        GRO_HELD,
        GRO_NORMAL,
        GRO_DROP,
        GRO_CONSUMED,
};
typedef enum gro_result gro_result_t;

In case *rc* evaluates to 5, we end up having an out-of-bounds read
at drivers/net/wireless/ath/wil6210/txrx.c:821:

wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n",
     len, gro_res_str[rc]);

Fix this by adding element "GRO_CONSUMED" to array gro_res_str.

Addresses-Coverity-ID: 1444666 ("Out-of-bounds read")
Fixes: 194b482b5055 ("wil6210: Debug print GRO Rx result")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath: DFS JP domain W56 fixed pulse type 3 RADAR detection
Anilkumar Kolli [Wed, 6 Mar 2019 17:36:11 +0000 (23:06 +0530)]
ath: DFS JP domain W56 fixed pulse type 3 RADAR detection

Increase pulse width range from 1-2usec to 0-4usec.
During data traffic HW occasionally fails detecting radar pulses,
so that SW cannot get enough radar reports to achieve the success rate.

Tested ath10k hw and fw:
* QCA9888(10.4-3.5.1-00052)
* QCA4019(10.4-3.2.1.1-00017)
* QCA9984(10.4-3.6-00104)
* QCA988X(10.2.4-1.0-00041)

Tested ath9k hw: AR9300

Tested-by: Tamizh chelvam <tamizhr@codeaurora.org>
Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath9k: drop redundant code in ar9003_hw_set_channel
Tomislav Požega [Thu, 14 Mar 2019 14:07:50 +0000 (15:07 +0100)]
ath9k: drop redundant code in ar9003_hw_set_channel

AR9330, AR9485, AR9531, AR9550, AR9561 and AR9565 all use same
channel set register configuration which allows for small code
size reduction.

Signed-off-by: Tomislav Požega <pozega.tomislav@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath: drop duplicated define
Tomislav Požega [Thu, 14 Mar 2019 14:07:49 +0000 (15:07 +0100)]
ath: drop duplicated define

Remove duplicate NO_CTL that is just 2 lines below.

Signed-off-by: Tomislav Požega <pozega.tomislav@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath9k: Remove some set but not used variables
YueHaibing [Wed, 17 Apr 2019 02:57:45 +0000 (10:57 +0800)]
ath9k: Remove some set but not used variables

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/wireless/ath/ath9k/xmit.c: In function 'ath_tx_count_frames':
drivers/net/wireless/ath/ath9k/xmit.c:413:25: warning: variable 'fi' set but not used [-Wunused-but-set-variable]
drivers/net/wireless/ath/ath9k/xmit.c: In function 'ath_tx_complete_aggr':
drivers/net/wireless/ath/ath9k/xmit.c:449:24: warning: variable 'hdr' set but not used [-Wunused-but-set-variable]
drivers/net/wireless/ath/ath9k/xmit.c: In function 'ath_tx_start':
drivers/net/wireless/ath/ath9k/xmit.c:2274:18: warning: variable 'avp' set but not used [-Wunused-but-set-variable]
drivers/net/wireless/ath/ath9k/xmit.c:2269:24: warning: variable 'hdr' set but not used [-Wunused-but-set-variable]

These variables are not used any more
and can be removed.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath9k: Differentiate between max combined and per chain power
Sven Eckelmann [Wed, 20 Mar 2019 10:37:23 +0000 (11:37 +0100)]
ath9k: Differentiate between max combined and per chain power

The ath9k driver uses as maximum allowed txpower the constant
MAX_RATE_POWER. It is used to set a maximum txpower limit for the PHY
(which is combined txpower) and also the maximum txpower for per chain
rates. Its value 63 is derived from the maximum number the registers can
store for the per chain txpower.

The max txpower a user can set because of this is 31 dBm (floor(63 / 2)).
This also means that a device with multiple tx chains is even limited
further:

* 1 chain:  31 dBm per chain
* 2 chains: 28 dBm per chain
* 3 chains: 26 dBm per chain

This combined txpower limit of 31 dBm becomes even more problematic when
some extra antenna gain is set in the EEPROM. A high power device is then
no longer able to reach its potential limits.

Instead the code dealing with the combined txpower must use a higher limit
than 63 and only the code dealing with the per chain txpower have to use
the limit of 63. Since the antenna gain can be quite large and 8 bit
variables are often used in ath9k for txpower, a large, divisible by two
number like 254 is a good choice for this new limit.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath9k: Check for errors when reading SREV register
Tim Schumacher [Mon, 18 Mar 2019 19:05:57 +0000 (20:05 +0100)]
ath9k: Check for errors when reading SREV register

Right now, if an error is encountered during the SREV register
read (i.e. an EIO in ath9k_regread()), that error code gets
passed all the way to __ath9k_hw_init(), where it is visible
during the "Chip rev not supported" message.

    ath9k_htc 1-1.4:1.0: ath9k_htc: HTC initialized with 33 credits
    ath: phy2: Mac Chip Rev 0x0f.3 is not supported by this driver
    ath: phy2: Unable to initialize hardware; initialization status: -95
    ath: phy2: Unable to initialize hardware; initialization status: -95
    ath9k_htc: Failed to initialize the device

Check for -EIO explicitly in ath9k_hw_read_revisions() and return
a boolean based on the success of the operation. Check for that in
__ath9k_hw_init() and abort with a more debugging-friendly message
if reading the revisions wasn't successful.

    ath9k_htc 1-1.4:1.0: ath9k_htc: HTC initialized with 33 credits
    ath: phy2: Failed to read SREV register
    ath: phy2: Could not read hardware revision
    ath: phy2: Unable to initialize hardware; initialization status: -95
    ath: phy2: Unable to initialize hardware; initialization status: -95
    ath9k_htc: Failed to initialize the device

This helps when debugging by directly showing the first point of
failure and it could prevent possible errors if a 0x0f.3 revision
is ever supported.

Signed-off-by: Tim Schumacher <timschumi@gmx.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath9k: Don't trust TX status TID number when reporting airtime
Toke Høiland-Jørgensen [Thu, 7 Mar 2019 18:39:44 +0000 (19:39 +0100)]
ath9k: Don't trust TX status TID number when reporting airtime

As already noted a comment in ath_tx_complete_aggr(), the hardware will
occasionally send a TX status with the wrong tid number. If we trust the
value, airtime usage will be reported to the wrong AC, which can cause the
deficit on that AC to become very low, blocking subsequent attempts to
transmit.

To fix this, account airtime usage to the TID number from the original skb,
instead of the one in the hardware TX status report.

Reported-by: Miguel Catalan Cid <miguel.catalan@i2cat.net>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath6kl: remove redundant check of status != 0
Colin Ian King [Thu, 4 Apr 2019 13:47:23 +0000 (14:47 +0100)]
ath6kl: remove redundant check of status != 0

The check on status not being zero is redundant as previous code
paths that set status to an error value break out of the while
loop and hence status is never non-zero at the check. Remove
this redundant code.

Addresses-Coverity: ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath6kl: add some bounds checking
Dan Carpenter [Thu, 4 Apr 2019 08:56:51 +0000 (11:56 +0300)]
ath6kl: add some bounds checking

The "ev->traffic_class" and "reply->ac" variables come from the network
and they're used as an offset into the wmi->stream_exist_for_ac[] array.
Those variables are u8 so they can be 0-255 but the stream_exist_for_ac[]
array only has WMM_NUM_AC (4) elements.  We need to add a couple bounds
checks to prevent array overflows.

I also modified one existing check from "if (traffic_class > 3) {" to
"if (traffic_class >= WMM_NUM_AC) {" just to make them all consistent.

Fixes: bdcd81707973 (" Add ath6kl cleaned up driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath6kl: wmi: use struct_size() helper
Gustavo A. R. Silva [Wed, 3 Apr 2019 18:49:49 +0000 (13:49 -0500)]
ath6kl: wmi: use struct_size() helper

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes, in particular in the
context in which this code is being used.

So, replace code of the following form:

sizeof(*ev) + ev->num_neighbors * sizeof(struct wmi_neighbor_info)

with:

struct_size(ev, neighbor, ev->num_neighbors)

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath6kl: debug: Use struct_size() helper
Gustavo A. R. Silva [Wed, 3 Apr 2019 15:48:35 +0000 (10:48 -0500)]
ath6kl: debug: Use struct_size() helper

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes, in particular in the
context in which this code is being used.

So, change the following form:

sizeof(*tbl) + num_entries * sizeof(struct wmi_bss_roam_info)

 to :

struct_size(tbl, info, num_entries)

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: fix incorrect multicast/broadcast rate setting
Pradeep kumar Chitrapu [Tue, 23 Apr 2019 13:43:28 +0000 (16:43 +0300)]
ath10k: fix incorrect multicast/broadcast rate setting

Invalid rate code is sent to firmware when multicast rate value of 0 is
sent to driver indicating disabled case, causing broken mesh path.
so fix that.

Tested on QCA9984 with firmware 10.4-3.6.1-00827

Sven tested on IPQ4019 with 10.4-3.5.3-00057 and QCA9888 with 10.4-3.5.3-00053
(ath10k-firmware) and 10.4-3.6-00140 (linux-firmware 2018-12-16-211de167).

Fixes: cd93b83ad92 ("ath10k: support for multicast rate control")
Co-developed-by: Zhi Chen <zhichen@codeaurora.org>
Signed-off-by: Zhi Chen <zhichen@codeaurora.org>
Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Tested-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: enable QCA6174 hw3.2 SDIO hardware
Wen Gong [Fri, 26 Apr 2019 06:41:11 +0000 (09:41 +0300)]
ath10k: enable QCA6174 hw3.2 SDIO hardware

After implementing PN replay check we can enable SDIO support on QCA6174.
Tested with client mode on all security modes, and fragmentation as well. AP
mode does not work yet.

Also tone down the warning about SDIO being not ready yet.

Tested on QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1. AP mode
is not working yet.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: add fragmentation handler for high latency devices
Wen Gong [Fri, 26 Apr 2019 06:41:10 +0000 (09:41 +0300)]
ath10k: add fragmentation handler for high latency devices

On high latency devices (SDIO, USB) ath10k did not handle fragmented frames and
all fragmented frames on receive path were lost in ath10k. Even a simple ping
test failed with fragmentation.

The fragmented packets are decapsulated based on the security mode, then the PN
is checked and the fragmented frame is passed to mac80211.  mac80211 in
ieee80211_rx_h_defragment() will then combine the fragment frames and forward
to upper layers.

Tested on QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: add PN replay protection for high latency devices
Wen Gong [Fri, 26 Apr 2019 06:41:09 +0000 (09:41 +0300)]
ath10k: add PN replay protection for high latency devices

On high latency devices (SDIO, USB) ath10k did not do PN replay check, a data
frame with an invalid PN number was not discard as it should have been. So this
patch implements PN replay in ath10k. PN replay check for fragmented frames is
implemented in followup patch.

With low latency devices (PCI, AHB) hardware can store the data
frames's content to host memory directly and the firmware can fully reorder
data frames, and do PN replay check at the same time. But for high latency
devices all data frames will be received and stored in firmware's memory and it
is hard to do full reorder because of the memory size limitations in the
firmware. This is why the PN replay protections needs to be implemented in host
driver.

Tested on QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: add handler for HTT_T2H_MSG_TYPE_SEC_IND event
Wen Gong [Fri, 26 Apr 2019 06:41:08 +0000 (09:41 +0300)]
ath10k: add handler for HTT_T2H_MSG_TYPE_SEC_IND event

Add the handler for HTT_T2H_MSG_TYPE_SEC_IND event from firmware, which stores
PN for replay check implemented in the following patch.

Tested on QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: add struct for high latency PN replay protection
Wen Gong [Fri, 26 Apr 2019 06:41:07 +0000 (09:41 +0300)]
ath10k: add struct for high latency PN replay protection

Add the struct for PN replay protection and fragment packet
handler.

Also fix the bitmask of HTT_RX_DESC_HL_INFO_MCAST_BCAST to match what's currently
used by SDIO firmware. The defines are not used yet so it's safe to modify
them. Remove the conflicting HTT_RX_DESC_HL_INFO_FRAGMENT as
it's not either used in ath10k.

Tested on QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: sdio: add missing error check
Erik Stromdahl [Fri, 19 Apr 2019 07:29:06 +0000 (10:29 +0300)]
ath10k: sdio: add missing error check

Although not likely, the bundle allocation might fail.
Add proper error check and warning print.

Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: add initialization of HTC header
Alagu Sankar [Fri, 19 Apr 2019 07:28:59 +0000 (10:28 +0300)]
ath10k: add initialization of HTC header

HTC header carries junk values that may be interpreted by the firmware
differently. Enable credit update only if flow control is enabled for
the corresponding endpoint.

Signed-off-by: Alagu Sankar <alagusankar@silex-india.com>
Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: fix use-after-free on SDIO data frames
Kalle Valo [Fri, 19 Apr 2019 07:28:56 +0000 (10:28 +0300)]
ath10k: fix use-after-free on SDIO data frames

With SDIO there's a use after free after a data frame is transfered, call stack
below. This happens because ath10k_htt_tx_hl() directly transmits the skb
provided by mac80211 using ath10k_htc_send(), all other HTT functions use
separate skb created with ath10k_htc_alloc_skb() to transmit the HTC packet.
After the packet is transmitted mac80211 frees the skb in ieee80211_tx_status()
but HTT layer expects  that it still owns the skb, and frees it in
ath10k_htt_htc_tx_complete().

To fix this take a reference of skb before sending it to HTC layer to make sure
we still own the skb.

Tested on QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1.
ath10k_htt_tx_hl() is only used by SDIO and USB so other busses (PCI, AHB and
SNOC) should be unaffected.

call stack of use-after-free:
dump_backtrace+0x0/0x2d8
show_stack+0x20/0x2c
__dump_stack+0x20/0x28
dump_stack+0xc8/0xec
print_address_description+0x74/0x240
kasan_report+0x258/0x274
__asan_report_load4_noabort+0x20/0x28
skb_pull+0xbc/0x114
ath10k_htc_notify_tx_completion+0x190/0x2a4 [ath10k_core]
ath10k_sdio_write_async_work+0x1e4/0x2c4 [ath10k_sdio]
process_one_work+0x3d8/0x8b0
worker_thread+0x518/0x7e0
kthread+0x260/0x278
ret_from_fork+0x10/0x18

Allocated by one task:
kasan_kmalloc+0xa0/0x13c
kasan_slab_alloc+0x14/0x1c
kmem_cache_alloc+0x144/0x208
__alloc_skb+0xec/0x394
alloc_skb_with_frags+0x8c/0x374
sock_alloc_send_pskb+0x520/0x5d4
sock_alloc_send_skb+0x40/0x50
__ip_append_data+0xf5c/0x1858
ip_make_skb+0x194/0x1d4
udp_sendmsg+0xf24/0x1ab8
inet_sendmsg+0x1b0/0x2e0
sock_sendmsg+0x88/0xa0
__sys_sendto+0x220/0x3a8
__arm64_sys_sendto+0x78/0x80
el0_svc_common+0x120/0x1e0
el0_svc_compat_handler+0x64/0x80
el0_svc_compat+0x8/0x18

Freed by another task:
__kasan_slab_free+0x120/0x1d4
kasan_slab_free+0x10/0x1c
kmem_cache_free+0x74/0x504
kfree_skbmem+0x88/0xc8
__kfree_skb+0x24/0x2c
consume_skb+0x114/0x18c
__ieee80211_tx_status+0xb7c/0xf60 [mac80211]
ieee80211_tx_status+0x224/0x270 [mac80211]
ath10k_txrx_tx_unref+0x564/0x950 [ath10k_core]
ath10k_htt_t2h_msg_handler+0x178c/0x2a38 [ath10k_core]
ath10k_htt_htc_t2h_msg_handler+0x20/0x30 [ath10k_core]
ath10k_sdio_irq_handler+0xcc0/0x1654 [ath10k_sdio]
process_sdio_pending_irqs+0xec/0x358
sdio_run_irqs+0x68/0xe4
sdio_irq_work+0x1c/0x28
process_one_work+0x3d8/0x8b0
worker_thread+0x518/0x7e0
kthread+0x260/0x278
ret_from_fork+0x10/0x18

Reported-by: Wen Gong <wgong@codeaurora.org>
Tested-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: htt: support MSDU ids with SDIO
Alagu Sankar [Fri, 19 Apr 2019 07:28:54 +0000 (10:28 +0300)]
ath10k: htt: support MSDU ids with SDIO

Transmit completion for SDIO is similar to PCIe, modify the high
latency path to allow SDIO modules to use the msdu id.

kvalo: the original patch from Alagu enabled this only for SDIO but I'm not
sure should we also enable this with USB. I'll use bus params to enable this
for so that it's easy to enable also for USB later.

Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1.

Co-developed-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Alagu Sankar <alagusankar@silex-india.com>
Signed-off-by: Wen Gong <wgong@codeaurora.org>.
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: initialise struct ath10k_bus params to zero
Kalle Valo [Fri, 19 Apr 2019 07:28:52 +0000 (10:28 +0300)]
ath10k: initialise struct ath10k_bus params to zero

This way we don't need to set every variable and give them to default, which is
zero. This is also safer in case we forgot to initalise a new field in some of
the bus modules.

Compile tested only.

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: htt: don't use txdone_fifo with SDIO
Alagu Sankar [Fri, 19 Apr 2019 07:28:49 +0000 (10:28 +0300)]
ath10k: htt: don't use txdone_fifo with SDIO

HTT High Latency (ATH10K_DEV_TYPE_HL) does not use txdone_fifo at all, we don't
even initialise it by skipping ath10k_htt_tx_alloc_buf() in
ath10k_htt_tx_start(). Because of this using QCA6174 SDIO
ath10k_htt_rx_tx_compl_ind() will crash when it accesses unitialised
txdone_fifo. So skip txdone_fifo when using High Latency mode.

Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1.

Co-developed-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Alagu Sankar <alagusankar@silex-india.com>
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: don't disable interrupts in ath10k_sdio_remove()
Wen Gong [Fri, 19 Apr 2019 07:28:47 +0000 (10:28 +0300)]
ath10k: don't disable interrupts in ath10k_sdio_remove()

Disabling interrupts this early meant WMI communication was not working anymore
when the SDIO device was removed. But we call ath10k_core_unregister() that
will eventually call ath10k_sdio_hif_stop(), which disables the interrupts. So
there's actually no need to disable interrupts here.

Also remove cancel_work_sync() as it's also called in ath10k_sdio_hif_stop().

Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoath10k: sdio: workaround firmware UART pin configuration bug
Wen Gong [Fri, 19 Apr 2019 07:28:45 +0000 (10:28 +0300)]
ath10k: sdio: workaround firmware UART pin configuration bug

On QCA6174 SDIO devices the SDIO interrupt will fail if UART is
disabled from ath10k. SDIO firmware enables UART printouts by
default. If ath10k will try to enable UART again the firmware
will configure it's GPIO line incorrectly and SDIO interrupts
won't work anymore. The workaround is to set UART pin again (19
for QCA6174 SDIO) if uart_print is 0.

Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agoMerge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
Kalle Valo [Fri, 19 Apr 2019 07:20:10 +0000 (10:20 +0300)]
Merge ath-next from git://git./linux/kernel/git/kvalo/ath.git

ath.git patches for 5.2. No major changes.

5 years agoMerge branch 'net-add-reset-controller-driven-PHY-reset'
David S. Miller [Fri, 19 Apr 2019 00:43:11 +0000 (17:43 -0700)]
Merge branch 'net-add-reset-controller-driven-PHY-reset'

David Bauer says:

====================
net: add reset-controller driven PHY reset

This patchset adds support for a PHY reset driven by a reset-controller.
Currently, only GPIO driven resets are supported by the PHY subsystem.
It also renames the reset-gpio from 'reset' to 'reset_gpio' to
better differentiate between resets wired to a GPIO and resets wired to
a reset-controller driven pin.

Some systems have the PHY reset-line wired to a pin controlled by a
reset-controller (eg. some Atheros AR9132 based boards). In case the
bootloader asserts reset before loading the kernel, we currently do not
have a clean way of deasserting reset to probe the PHY.

v3:
 - add missing newline in mdio_bus.c

v2:
 - fixed missed rename of "reset" in at803x.c
 - move initial reset to mdio_device_reset
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: mdio: rename mdio_device reset to reset_gpio
David Bauer [Wed, 17 Apr 2019 21:59:22 +0000 (23:59 +0200)]
net: mdio: rename mdio_device reset to reset_gpio

This renames the GPIO reset of mdio devices from 'reset' to
'reset_gpio' to better differentiate between GPIO and
reset-controller driven reset line.

Signed-off-by: David Bauer <mail@david-bauer.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: add support for reset-controller
David Bauer [Wed, 17 Apr 2019 21:59:21 +0000 (23:59 +0200)]
net: phy: add support for reset-controller

This commit adds support for PHY reset pins handled by a reset controller.

Signed-off-by: David Bauer <mail@david-bauer.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agodt-bindings: net: add PHY reset controller binding
David Bauer [Wed, 17 Apr 2019 21:59:20 +0000 (23:59 +0200)]
dt-bindings: net: add PHY reset controller binding

Add the documentation for PHY reset lines controlled by a reset controller.

Signed-off-by: David Bauer <mail@david-bauer.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'net-some-build-fixes-and-other-improvements'
David S. Miller [Fri, 19 Apr 2019 00:06:15 +0000 (17:06 -0700)]
Merge branch 'net-some-build-fixes-and-other-improvements'

Jakub Kicinski says:

====================
net: some build fixes and other improvements

A few unrelated improvements here, mostly trying to make random
configs build and W=1 produce a little less warnings under net/
and drivers net/.

First two patches fix set but not used warnings with W=1.

Next patch fixes 64bit division in sch_taprio.c.

Last two patches are getting rid of some (almost) unused asserts
in skbuff.h.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: skb: remove unused asserts
Jakub Kicinski [Wed, 17 Apr 2019 20:51:59 +0000 (13:51 -0700)]
net: skb: remove unused asserts

We are discouraging the use of BUG() these days, remove the
unused ASSERT macros from skbuff.h.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: gemini: remove unnecessary assert
Jakub Kicinski [Wed, 17 Apr 2019 20:51:58 +0000 (13:51 -0700)]
net: gemini: remove unnecessary assert

The driver does not advertize NETIF_F_FRAGLIST, the stack can't
pass skbs with frags lists to the xmit function.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/sched: taprio: fix build without 64bit div
Jakub Kicinski [Wed, 17 Apr 2019 20:51:57 +0000 (13:51 -0700)]
net/sched: taprio: fix build without 64bit div

Recent changes to taprio did not use the correct div64 helpers,
leading to:

net/sched/sch_taprio.o: In function `taprio_dequeue':
sch_taprio.c:(.text+0x34a): undefined reference to `__divdi3'
net/sched/sch_taprio.o: In function `advance_sched':
sch_taprio.c:(.text+0xa0b): undefined reference to `__divdi3'
net/sched/sch_taprio.o: In function `taprio_init':
sch_taprio.c:(.text+0x1450): undefined reference to `__divdi3'
/home/jkicinski/devel/linux/Makefile:1032: recipe for target 'vmlinux' failed

Use math64 helpers.

Fixes: 7b9eba7ba0c1 ("net/sched: taprio: fix picos_per_byte miscalculation")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agosb1000: fix variable set but not used warnings
Jakub Kicinski [Wed, 17 Apr 2019 20:51:56 +0000 (13:51 -0700)]
sb1000: fix variable set but not used warnings

GCC 8 complains:

drivers/net/sb1000.c: In function ‘card_send_command’:
drivers/net/sb1000.c:319:14: warning: variable ‘x’ set but not used [-Wunused-but-set-variable]
  int status, x;
              ^
drivers/net/sb1000.c: In function ‘sb1000_check_CRC’:
drivers/net/sb1000.c:493:6: warning: variable ‘crc’ set but not used [-Wunused-but-set-variable]
  int crc, status;
      ^~~

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agol2tp: fix set but not used variable
Jakub Kicinski [Wed, 17 Apr 2019 20:51:55 +0000 (13:51 -0700)]
l2tp: fix set but not used variable

GCC complains:

net/l2tp/l2tp_ppp.c: In function ‘pppol2tp_ioctl’:
net/l2tp/l2tp_ppp.c:1073:6: warning: variable ‘val’ set but not used [-Wunused-but-set-variable]
  int val;
      ^~~

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Add rate limit mask for ICMPv6 messages
Stephen Suryaputra [Wed, 17 Apr 2019 20:35:49 +0000 (16:35 -0400)]
ipv6: Add rate limit mask for ICMPv6 messages

To make ICMPv6 closer to ICMPv4, add ratemask parameter. Since the ICMP
message types use larger numeric values, a simple bitmask doesn't fit.
I use large bitmap. The input and output are the in form of list of
ranges. Set the default to rate limit all error messages but Packet Too
Big. For Packet Too Big, use ratemask instead of hard-coded.

There are functions where icmpv6_xrlim_allow() and icmpv6_global_allow()
aren't called. This patch only adds them to icmpv6_echo_reply().

Rate limiting error messages is mandated by RFC 4443 but RFC 4890 says
that it is also acceptable to rate limit informational messages. Thus,
I removed the current hard-coded behavior of icmpv6_mask_allow() that
doesn't rate limit informational messages.

v2: Add dummy function proc_do_large_bitmap() if CONFIG_PROC_SYSCTL
    isn't defined, expand the description in ip-sysctl.txt and remove
    unnecessary conditional before kfree().
v3: Inline the bitmap instead of dynamically allocated. Still is a
    pointer to it is needed because of the way proc_do_large_bitmap work.

Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: remove dead code from phy_sanitize_settings
Heiner Kallweit [Tue, 16 Apr 2019 22:13:09 +0000 (00:13 +0200)]
net: phy: remove dead code from phy_sanitize_settings

phy_sanitize_settings() is called from phy_start_aneg() only, and only
if phydev->autoneg isn't set. Therefore the removed code does nothing.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: don't set autoneg if it's not supported
Heiner Kallweit [Tue, 16 Apr 2019 21:54:00 +0000 (23:54 +0200)]
net: phy: don't set autoneg if it's not supported

In phy_device_create() we set phydev->autoneg = 1. This isn't changed
even if the PHY doesn't support autoneg. This seems to affect very
few PHY's, and they disable phydev->autoneg in their config_init
callback. So it's more of an improvement, therefore net-next.
The patch also wouldn't apply to older kernel versions because the
link mode bitmaps have been introduced recently.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next...
David S. Miller [Thu, 18 Apr 2019 18:25:33 +0000 (11:25 -0700)]
Merge branch '100GbE' of git://git./linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
100GbE Intel Wired LAN Driver Updates 2019-04-18

This series contains updates to the ice driver only.

Anirudh fixes up code comments which had typos.  Added support for DCB
into the ice driver, which required a bit of refactoring of the existing
code.  Also fixed a potential race condition between closing and opening
the VSI for a MIB change event, so resolved this by grabbing the
rtnl_lock prior to closing.  Added support to process LLDP MIB change
notifications.  Added support for reporting DCB stats via ethtool.

Brett updates the calculation to increment ITR to use a direct
calculation instead of using estimations.  This provides a more accurate
value.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge tag 'wireless-drivers-next-for-davem-2019-04-18' of git://git.kernel.org/pub...
David S. Miller [Thu, 18 Apr 2019 18:07:55 +0000 (11:07 -0700)]
Merge tag 'wireless-drivers-next-for-davem-2019-04-18' of git://git./linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 5.2

Nothing really special standing out this time, iwlwifi being the most
active driver.

Major changes:

iwlwifi

* send NO_DATA events so they can be captured in radiotap

* support for multiple BSSID

* support for some new FW API versions

* support new hardware

* debugfs cleanups by Greg-KH

qtnfmac

* allow each MAC to specify its own regulatory rules
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoice: Calculate ITR increment based on direct calculation
Brett Creeley [Thu, 28 Feb 2019 23:25:47 +0000 (15:25 -0800)]
ice: Calculate ITR increment based on direct calculation

Currently when calculating how much to increment ITR by inside of
ice_update_itr() we do some estimations and intermediate
calculations. Instead of doing estimations, just do the
calculation directly. This allows for a more accurate value and it
makes it easier for the next person to understand and update.

Also, remove the dividing the ITR value by 2 when latency
driven because the ITR values are already so low for 100Gbps
speed. This should help get to the desired ITR value faster.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Bump driver version
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:32 +0000 (15:24 -0800)]
ice: Bump driver version

Update driver version to 0.7.4

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Add code to control FW LLDP and DCBX
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:31 +0000 (15:24 -0800)]
ice: Add code to control FW LLDP and DCBX

This patch adds code to start or stop LLDP and DCBX in firmware through
use of ethtool private flags.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Add code for DCB rebuild
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:30 +0000 (15:24 -0800)]
ice: Add code for DCB rebuild

This patch introduces a new function ice_dcb_rebuild which reinitializes
DCB after a reset.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Add code to get DCB related statistics
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:29 +0000 (15:24 -0800)]
ice: Add code to get DCB related statistics

This patch adds a new function ice_update_dcb_stats to get DCB stats
from the hardware and ethtool support for displaying these stats.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Add priority information into VLAN header
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:28 +0000 (15:24 -0800)]
ice: Add priority information into VLAN header

This patch introduces a new function ice_tx_prepare_vlan_flags_dcb to
insert 802.1p priority information into the VLAN header

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Update rings based on TC information
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:27 +0000 (15:24 -0800)]
ice: Update rings based on TC information

This patch adds a new function ice_vsi_cfg_dcb_rings which updates a
VSI's rings based on DCB traffic class information.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Add code to process LLDP MIB change events
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:26 +0000 (15:24 -0800)]
ice: Add code to process LLDP MIB change events

This patch adds support to process LLDP MIB change notifications sent
by the firmware.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Add code for DCB initialization part 4/4
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:25 +0000 (15:24 -0800)]
ice: Add code for DCB initialization part 4/4

When the firmware doesn't support LLDP or DCBX, the driver should switch
to "software LLDP mode". This patch adds support for the same.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Add code for DCB initialization part 3/4
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:24 +0000 (15:24 -0800)]
ice: Add code for DCB initialization part 3/4

This patch adds a new function ice_pf_dcb_cfg (and related helpers)
which applies the DCB configuration obtained from the firmware. As
part of this, VSIs/netdevs are updated with traffic class information.

This patch requires a bit of a refactor of existing code.

1. For a MIB change event, the associated VSI is closed and brought up
   again. The gap between closing and opening the VSI can cause a race
   condition. Fix this by grabbing the rtnl_lock prior to closing the
   VSI and then only free it after re-opening the VSI during a MIB
   change event.

2. ice_sched_query_elem is used in ice_sched.c and with this patch, in
   ice_dcb.c as well. However, ice_dcb.c is not built when CONFIG_DCB is
   unset. This results in namespace warnings (ice_sched.o: Externally
   defined symbols with no external references) when CONFIG_DCB is unset.
   To avoid this move ice_sched_query_elem from ice_sched.c to
   ice_common.c.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Add code for DCB initialization part 2/4
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:23 +0000 (15:24 -0800)]
ice: Add code for DCB initialization part 2/4

This patch introduces a new top level function ice_init_dcb (and
related lower level helper functions) which continues the DCB init
flow.

This function uses ice_get_dcb_cfg to get, parse and store the DCB
configuration. Once this is done, it sets itself up to be notified
by the firmware on LLDP MIB change events.

Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Add code for DCB initialization part 1/4
Anirudh Venkataramanan [Thu, 28 Feb 2019 23:24:22 +0000 (15:24 -0800)]
ice: Add code for DCB initialization part 1/4

This patch introduces a skeleton for ice_init_pf_dcb, the top level
function for DCB initialization. Subsequent patches will add to this
DCB init flow.

In this patch, ice_init_pf_dcb checks if DCB is a supported capability.
If so, an admin queue call to start the LLDP and DCBx in firmware is
issued. If not, an error is reported. Note that we don't fail the driver
init if DCB init fails.

Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Bump version
Anirudh Venkataramanan [Tue, 19 Feb 2019 23:04:14 +0000 (15:04 -0800)]
ice: Bump version

Bump driver version to 0.7.3

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Fix incorrect use of abbreviations
Anirudh Venkataramanan [Tue, 19 Feb 2019 23:04:13 +0000 (15:04 -0800)]
ice: Fix incorrect use of abbreviations

Capitalize abbreviations and spell out some that aren't obvious.

Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agoice: Fix typos in code comments
Anirudh Venkataramanan [Tue, 19 Feb 2019 23:04:12 +0000 (15:04 -0800)]
ice: Fix typos in code comments

This patch fixes typos in code comments.

Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
5 years agortlwifi: rtl8188ee: Remove extraneous file
Larry Finger [Wed, 17 Apr 2019 00:35:47 +0000 (19:35 -0500)]
rtlwifi: rtl8188ee: Remove extraneous file

Somehow file drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c.rej was
incorporated into the sources. Obviously, it can be removed.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
5 years agonet ipv6: Prevent neighbor add if protocol is disabled on device
David Ahern [Wed, 17 Apr 2019 00:31:43 +0000 (17:31 -0700)]
net ipv6: Prevent neighbor add if protocol is disabled on device

Disabling IPv6 on an interface removes existing entries but nothing prevents
new entries from being manually added. To that end, add a new neigh_table
operation, allow_add, that is called on RTM_NEWNEIGH to see if neighbor
entries are allowed on a given device. If IPv6 is disabled on the device,
allow_add returns false and passes a message back to the user via extack.

  $ echo 1 > /proc/sys/net/ipv6/conf/eth1/disable_ipv6
  $ ip -6 neigh add fe80::4c88:bff:fe21:2704 dev eth1 lladdr de:ad:be:ef:01:01
  Error: IPv6 is disabled on this device.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'ipv6-Use-fib6_result-for-fib_lookups'
David S. Miller [Thu, 18 Apr 2019 06:11:52 +0000 (23:11 -0700)]
Merge branch 'ipv6-Use-fib6_result-for-fib_lookups'

David Ahern says:

====================
ipv6: Use fib6_result for fib_lookups

Add fib6_result as a single data structure to hold results from a fib
lookup. IPv6 currently has everything in 1 data structure - a fib6_info,
but with nexthop objects the fib6_nh can be in a nexthop or a nexthop
can be a blackhole which affects the fib6_type and flags (REJECT).

v2
- fixed 2 bugs in patch12:
  i. checking return from fib6_table_lookup in fib6_lookup
  ii. call to fib6_rule_saddr in fib6_rule_action_alt should use res->nh
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Add fib6_type and fib6_flags to fib6_result
David Ahern [Tue, 16 Apr 2019 21:36:11 +0000 (14:36 -0700)]
ipv6: Add fib6_type and fib6_flags to fib6_result

Add the fib6_flags and fib6_type to fib6_result. Update the lookup helpers
to set them and update post fib lookup users to use the version from the
result.

This allows nexthop objects to have blackhole nexthop.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to fib lookups
David Ahern [Tue, 16 Apr 2019 21:36:10 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to fib lookups

Change fib6_lookup and fib6_table_lookup to take a fib6_result and set
f6i and nh rather than returning a fib6_info. For now both always
return 0.

A later patch set can make these more like the IPv4 counterparts and
return EINVAL, EACCESS, etc based on fib6_type.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to fib6_table_lookup tracepoint
David Ahern [Tue, 16 Apr 2019 21:36:09 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to fib6_table_lookup tracepoint

Change fib6_table_lookup tracepoint to take the fib6_result and use
the fib6_info and fib6_nh from it.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to rt6_select and find_rr_leaf
David Ahern [Tue, 16 Apr 2019 21:36:08 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to rt6_select and find_rr_leaf

Pass fib6_result to rt6_select. Instead of returning the fib entry, it
will set f6i and nh based on the lookup.

find_rr_leaf is changed to remove the match option in favor of taking
fib6_result and having __find_rr_leaf set f6i in the result.

In the process, update fib6_info references in __find_rr_leaf to f6i names.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to rt6_device_match
David Ahern [Tue, 16 Apr 2019 21:36:07 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to rt6_device_match

Pass fib6_result to rt6_device_match with f6i set. rt6_device_match
updates f6i in the result if it finds a better match and sets nh.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to ip6_mtu_from_fib6 and fib6_mtu
David Ahern [Tue, 16 Apr 2019 21:36:06 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to ip6_mtu_from_fib6 and fib6_mtu

Change ip6_mtu_from_fib6 and fib6_mtu to take a fib6_result over a
fib6_info. Update both to use the fib6_nh from fib6_result.

Since the signature of ip6_mtu_from_fib6 is already changing, add const
to daddr and saddr.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to rt6_insert_exception
David Ahern [Tue, 16 Apr 2019 21:36:05 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to rt6_insert_exception

Update rt6_insert_exception to take a fib6_result over a fib6_info.
Change ort to f6i from the fib6_result and rename to better reflect
what it references (a fib6_info).

Since this function is already getting changed, update the comments
to reference fib6_info variables rather than the older rt6_info.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to ip6_rt_get_dev_rcu and ip6_rt_copy_init
David Ahern [Tue, 16 Apr 2019 21:36:04 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to ip6_rt_get_dev_rcu and ip6_rt_copy_init

Now that all callers are update to have a fib6_result, pass it down
to ip6_rt_get_dev_rcu, ip6_rt_copy_init, and ip6_rt_init_dst.

In the process, change ort to f6i in ip6_rt_copy_init to make it
clear it is a reference to a fib6_info.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to pcpu route functions
David Ahern [Tue, 16 Apr 2019 21:36:03 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to pcpu route functions

Update ip6_rt_pcpu_alloc, rt6_get_pcpu_route and rt6_make_pcpu_route
to a fib6_result over a fib6_info.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to ip6_create_rt_rcu
David Ahern [Tue, 16 Apr 2019 21:36:02 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to ip6_create_rt_rcu

Change ip6_create_rt_rcu to take fib6_result over a fib6_info.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to ip6_rt_cache_alloc
David Ahern [Tue, 16 Apr 2019 21:36:01 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to ip6_rt_cache_alloc

Change ip6_rt_cache_alloc to take a fib6_result over a fib6_info.

Since ip6_rt_cache_alloc is only the caller, update the
rt6_is_gw_or_nonexthop helper to take fib6_result.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Pass fib6_result to rt6_find_cached_rt
David Ahern [Tue, 16 Apr 2019 21:36:00 +0000 (14:36 -0700)]
ipv6: Pass fib6_result to rt6_find_cached_rt

Simplify rt6_find_cached_rt for the fast path cases and pass fib6_result
to rt6_find_cached_rt. Rename the local return variable to ret to maintain
consisting with fib6_result name.

Update the comment in rt6_find_cached_rt to reference the new names in
a fib6_info vs the old name when fib entries were an rt6_info.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Rename fib6_multipath_select and pass fib6_result
David Ahern [Tue, 16 Apr 2019 21:35:59 +0000 (14:35 -0700)]
ipv6: Rename fib6_multipath_select and pass fib6_result

Add 'struct fib6_result' to hold the fib entry and fib6_nh from a fib
lookup as separate entries, similar to what IPv4 now has with fib_result.

Rename fib6_multipath_select to fib6_select_path, pass fib6_result to
it, and set f6i and nh in the result once a path selection is done.
Call fib6_select_path unconditionally for path selection which means
moving the sibling and oif check to fib6_select_path. To handle the two
different call paths (2 only call multipath_select if flowi6_oif == 0 and
the other always calls it), add a new have_oif_match that controls the
sibling walk if relevant.

Update callers of fib6_multipath_select accordingly and have them use the
fib6_info and fib6_nh from the result.

This is needed for multipath nexthop objects where a single f6i can
point to multiple fib6_nh (similar to IPv4).

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Wed, 17 Apr 2019 18:26:25 +0000 (11:26 -0700)]
Merge git://git./linux/kernel/git/davem/net

Conflict resolution of af_smc.c from Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 's390-next'
David S. Miller [Wed, 17 Apr 2019 17:33:59 +0000 (10:33 -0700)]
Merge branch 's390-next'

Julian Wiedmann says:

====================
s390/qeth: updates 2019-04-17

please apply some additional qeth patches to net-next. This patchset
converts the driver to use the kernel's multiqueue model.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: stop/wake TX queues based on their fill level
Julian Wiedmann [Wed, 17 Apr 2019 16:17:35 +0000 (18:17 +0200)]
s390/qeth: stop/wake TX queues based on their fill level

Current xmit code only stops the txq after attempting to fill an
IO buffer that hasn't been TX-completed yet. In many-connection
scenarios, this can result in frequent rejected TX attempts, requeuing
of skbs with NETDEV_TX_BUSY and extra overhead.

Now that we have a proper 1-to-1 relation between stack-side txqs and
our HW Queues, overhaul the stop/wake logic so that the xmit code
stops the txq as needed.
Given that we might map multiple skbs into a single buffer, it's crucial
to ensure that the queue always provides an _entirely_ empty IO buffer.
Otherwise large skbs (eg TSO) might not fit into the last available
buffer. So whenever qeth_do_send_packet() first utilizes an _empty_
buffer, it updates & checks the used_buffers count.

This now ensures that an skb passed to qeth_xmit() can always be mapped
into an IO buffer, so remove all of the -EBUSY roll-back handling in the
TX path. We preserve the minimal safety-checks ("Is this IO buffer
really available?"), just in case some nasty future bug ever attempts to
corrupt an in-use buffer.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: simplify QoS code
Julian Wiedmann [Wed, 17 Apr 2019 16:17:34 +0000 (18:17 +0200)]
s390/qeth: simplify QoS code

qeth_get_priority_queue() is no longer used for IQD devices, remove the
special-casing of their mcast queue.

This effectively reverts
commit 70deb01662b1 ("qeth: omit outbound queue 3 for unicast packets in Priority Queuing on HiperSockets").

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: add TX multiqueue support for OSA devices
Julian Wiedmann [Wed, 17 Apr 2019 16:17:33 +0000 (18:17 +0200)]
s390/qeth: add TX multiqueue support for OSA devices

This adds trivial support for multiple TX queues on OSA-style devices
(both real HW and z/VM NICs). For now we expose the driver's existing
QoS mechanism via .ndo_select_queue, and adjust the number of available
TX queues when qeth_update_from_chp_desc() detects that the
HW configuration has changed.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: add TX multiqueue support for IQD devices
Julian Wiedmann [Wed, 17 Apr 2019 16:17:32 +0000 (18:17 +0200)]
s390/qeth: add TX multiqueue support for IQD devices

qeth has been supporting multiple HW Output Queues for a long time. But
rather than exposing those queues to the stack, it uses its own queue
selection logic in .ndo_start_xmit... with all the drawbacks that
entails.
Start off by switching IQD devices over to a proper mqs net_device,
and converting all the netdev_queue management code.

One oddity with IQD devices is the requirement to place all mcast
traffic on the _highest_ established HW queue. Doing so via
.ndo_select_queue seems straight-forward - but that won't work if only
some of the HW queues are active
(ie. when dev->real_num_tx_queues < dev->num_tx_queues), since
netdev_cap_txqueue() will not allow us to put skbs on the higher queues.

To make this work, we
1. let .ndo_select_queue() map all mcast traffic to netdev_queue 0, and
2. later re-map the netdev_queue and HW queue indices in
   .ndo_start_xmit and the TX completion handler.

With this patch we default to a fixed set of 1 ucast and 1 mcast queue.
Support for dynamic reconfiguration is added at a later time.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: don't keep statistics for tx timeout
Julian Wiedmann [Wed, 17 Apr 2019 16:17:31 +0000 (18:17 +0200)]
s390/qeth: don't keep statistics for tx timeout

struct netdev_queue contains a counter for tx timeouts, which gets
updated by dev_watchdog(). So let's not attempt to maintain our own
statistics, in particular not by overloading the skb-error counter.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: don't bother updating the last-tx time
Julian Wiedmann [Wed, 17 Apr 2019 16:17:30 +0000 (18:17 +0200)]
s390/qeth: don't bother updating the last-tx time

As the documentation for netif_trans_update() says, netdev_start_xmit()
already updates the last-tx time after every good xmit. So don't
duplicate that effort.

One odd case is that qeth_flush_buffers() also gets called from our
TX completion handler, to flush out any partially filled buffer when
we switch the queue to non-packing mode. But as the TX completion
handler will _always_ wake the txq, we don't have to worry about
the TX watchdog there.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: handle error from qeth_update_from_chp_desc()
Julian Wiedmann [Wed, 17 Apr 2019 16:17:29 +0000 (18:17 +0200)]
s390/qeth: handle error from qeth_update_from_chp_desc()

Subsequent code relies on the values that qeth_update_from_chp_desc()
reads from the CHP descriptor. Rather than dealing with weird errors
later on, just handle it properly here.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: clarify naming for some QDIO helpers
Julian Wiedmann [Wed, 17 Apr 2019 16:17:28 +0000 (18:17 +0200)]
s390/qeth: clarify naming for some QDIO helpers

The naming of several QDIO helpers doesn't match their actual
functionality, or the structures they operate on. Clean this up.

s/qeth_alloc_qdio_buffers/qeth_alloc_qdio_queues
s/qeth_free_qdio_buffers/qeth_free_qdio_queues
s/qeth_alloc_qdio_out_buf/qeth_alloc_output_queue
s/qeth_clear_outq_buffers/qeth_drain_output_queue
s/qeth_clear_qdio_buffers/qeth_drain_output_queues

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next...
David S. Miller [Wed, 17 Apr 2019 17:31:21 +0000 (10:31 -0700)]
Merge branch '40GbE' of git://git./linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
40GbE Intel Wired LAN Driver Updates 2019-04-16

This series contains updates to i40e driver only.

Adam fixes i40e so that queues can be restored to its original value if
configuring queue channels fails.  Bumped the maximum API version
supported and added the API version to error messages to clarify
supported firmware API versions.  Fixed the problem with the driver
being able to add only 7 multicast MAC address filters instead of 16.

Aleksandr adds support for Dynamic Device Personalization (DDP) which
allows loading profiles that change the way internal parser interprets
processed frames.

Nick fixes an issue where if we modify the VLAN stripping options when a
port VLAN is configured, it will break traffic for the VSI, so prevent
changes from being made.

Jake fixes an issue where a device reset can mess up the clock time
because we reset the clock time based on the kernel time every reset.
This causes us to potentially completely reset the PTP time, and can
cause unexpected behavior in programs like ptp4l.

Piotr fixes an LED blink issue with the 'ethtool -p' command, so that
identification blinking will work on all hardware.

Chinh fixed the error returned to correctly reflect the current state
when LLDP or DCBx is not in an operational state.

Grzegorz cleans up a misleading error message when untrusted VF tries to
exceed addresses beyond the NIC limit.

Carolyn fixes the error return code to correctly reflect the error case.

v2: updated the URL provided in the DDP patch (#2)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge tag 'for-linus-5.1-2' of git://github.com/cminyard/linux-ipmi
Linus Torvalds [Wed, 17 Apr 2019 17:25:25 +0000 (10:25 -0700)]
Merge tag 'for-linus-5.1-2' of git://github.com/cminyard/linux-ipmi

Pull IPMI fixes from Corey Minyard:
 "Fixes for some bugs cause by recent changes. One crash if you feed bad
  data to the module parameters, one BUG that sometimes occurs when a
  user closes the connection, and one bug that cause the driver to not
  work if the configuration information only comes in from SMBIOS"

* tag 'for-linus-5.1-2' of git://github.com/cminyard/linux-ipmi:
  ipmi: fix sleep-in-atomic in free_user at cleanup SRCU user->release_barrier
  ipmi: ipmi_si_hardcode.c: init si_type array to fix a crash
  ipmi: Fix failure on SMBIOS specified devices

5 years agoMerge branch 'stmmac-Enable-Flow-Control'
David S. Miller [Wed, 17 Apr 2019 17:14:28 +0000 (10:14 -0700)]
Merge branch 'stmmac-Enable-Flow-Control'

Jose Abreu says:

====================
net: stmmac: Enable Flow Control

I don't know of any specific reason why Flow Control is off by default but
do let me know if there is any.

Tested in B2B between XGMAC2 and GMAC5.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Set Flow Control to automatic mode in the driver
Jose Abreu [Wed, 17 Apr 2019 07:33:05 +0000 (09:33 +0200)]
net: stmmac: Set Flow Control to automatic mode in the driver

By default Flow Control feature is not being enabled in stmmac.

This is a useful feature that can prevent loss of packets and now that
XGMAC already supports it (along with GMAC and QoS) it makes sense to
activate it.

Switch the module parameter to FLOW_AUTO so that Flow Control is
activated.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: dwxgmac: Finish the Flow Control implementation
Jose Abreu [Wed, 17 Apr 2019 07:33:04 +0000 (09:33 +0200)]
net: stmmac: dwxgmac: Finish the Flow Control implementation

Finish the implementation of Flow Control feature. In order for it to
work correctly we need to set EHFC bit and the correct threshold values
for activating and deactivating it.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 17 Apr 2019 16:57:45 +0000 (09:57 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Handle init flow failures properly in iwlwifi driver, from Shahar S
    Matityahu.

 2) mac80211 TXQs need to be unscheduled on powersave start, from Felix
    Fietkau.

 3) SKB memory accounting fix in A-MDSU aggregation, from Felix Fietkau.

 4) Increase RCU lock hold time in mlx5 FPGA code, from Saeed Mahameed.

 5) Avoid checksum complete with XDP in mlx5, also from Saeed.

 6) Fix netdev feature clobbering in ibmvnic driver, from Thomas Falcon.

 7) Partial sent TLS record leak fix from Jakub Kicinski.

 8) Reject zero size iova range in vhost, from Jason Wang.

 9) Allow pending work to complete before clcsock release from Karsten
    Graul.

10) Fix XDP handling max MTU in thunderx, from Matteo Croce.

11) A lot of protocols look at the sa_family field of a sockaddr before
    validating it's length is large enough, from Tetsuo Handa.

12) Don't write to free'd pointer in qede ptp error path, from Colin Ian
    King.

13) Have to recompile IP options in ipv4_link_failure because it can be
    invoked from ARP, from Stephen Suryaputra.

14) Doorbell handling fixes in qed from Denis Bolotin.

15) Revert net-sysfs kobject register leak fix, it causes new problems.
    From Wang Hai.

16) Spectre v1 fix in ATM code, from Gustavo A. R. Silva.

17) Fix put of BROPT_VLAN_STATS_PER_PORT in bridging code, from Nikolay
    Aleksandrov.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (111 commits)
  socket: fix compat SO_RCVTIMEO_NEW/SO_SNDTIMEO_NEW
  tcp: tcp_grow_window() needs to respect tcp_space()
  ocelot: Clean up stats update deferred work
  ocelot: Don't sleep in atomic context (irqs_disabled())
  net: bridge: fix netlink export of vlan_stats_per_port option
  qed: fix spelling mistake "faspath" -> "fastpath"
  tipc: set sysctl_tipc_rmem and named_timeout right range
  tipc: fix link established but not in session
  net: Fix missing meta data in skb with vlan packet
  net: atm: Fix potential Spectre v1 vulnerabilities
  net/core: work around section mismatch warning for ptp_classifier
  net: bridge: fix per-port af_packet sockets
  bnx2x: fix spelling mistake "dicline" -> "decline"
  route: Avoid crash from dereferencing NULL rt->from
  MAINTAINERS: normalize Woojung Huh's email address
  bonding: fix event handling for stacked bonds
  Revert "net-sysfs: Fix memory leak in netdev_register_kobject"
  rtnetlink: fix rtnl_valid_stats_req() nlmsg_len check
  qed: Fix the DORQ's attentions handling
  qed: Fix missing DORQ attentions
  ...