| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
Extract commands to set virtqueue coalescing parameters for reuse
by ethtool -Q, vq resize and netdim.
Signed-off-by: Heng Qi <[email protected]>
Acked-by: Jason Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
This patch separates the rx and tx global coalescing moderation
commands to support netdim switches in subsequent patches.
Signed-off-by: Heng Qi <[email protected]>
Acked-by: Jason Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
rx netdim needs to count the traffic during a complete napi process,
and start updating and comparing samples to make decisions after
the napi ends. Let virtqueue_napi_complete() return true if napi is done,
otherwise vice versa.
Signed-off-by: Heng Qi <[email protected]>
Acked-by: Jason Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Set up the pci_error_handlers error_detected and resume to be useful in
handling AER events. If the error detected is pci_channel_io_frozen we
set up to do an FLR at the end of the AER handling - this tends to clear
things up well enough that traffic can continue. Else, let the AER/PCI
machinery do what is needed for the less serious errors seen.
Signed-off-by: Shannon Nelson <[email protected]>
Reviewed-by: Brett Creeley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Remove and restore the lif's debugfs pointers on a reset,
and make sure to check for the dentry before removing it
in case an earlier reset failed to rebuild the lif.
Signed-off-by: Shannon Nelson <[email protected]>
Reviewed-by: Brett Creeley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
When stopping the watchdog timer at remove time we should
be using the new timer_shutdown_sync to assure the timer
doesn't ever get rearmed.
Signed-off-by: Shannon Nelson <[email protected]>
Reviewed-by: Brett Creeley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
If there was a failed attempt to reset the PCI connection,
don't later try to read from PCI as the space is unmapped
and will cause a paging request crash. When clearing the PCI
setup we can clear the dev_info register pointer, and check
it before using it in the fw_running test.
Signed-off-by: Shannon Nelson <[email protected]>
Reviewed-by: Brett Creeley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
If a reset fails, the PCI device is left in a disabled
state, so don't try to disable it again on driver remove.
This prevents a scary looking WARN trace in the kernel log.
ionic 0000:2b:00.0: disabling already-disabled device
Signed-off-by: Shannon Nelson <[email protected]>
Reviewed-by: Brett Creeley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
If the driver or firmware is stuck in reset state, don't bother
trying to use adminq commands. This speeds up shutdown and
prevents unnecessary timeouts and error messages.
This includes a bit of rework on ionic_adminq_post_wait()
and ionic_adminq_post_wait_nomsg() to both use
__ionic_adminq_post_wait() which can do the checks needed in
both cases.
Signed-off-by: Shannon Nelson <[email protected]>
Reviewed-by: Brett Creeley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Make sure we keep and replay the filters and RSS config across
an FLR by using our FW_RESET flag. This gets checked on the
way down and on the way back up to help determine how much LIF
state to keep and restore across a reset action.
Signed-off-by: Shannon Nelson <[email protected]>
Reviewed-by: Brett Creeley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Don't rely on the PCI memory for the devcmd opcode because we
read a 0xff value if the PCI bus is broken, which can cause us
to report a bogus dev_cmd opcode later.
Signed-off-by: Shannon Nelson <[email protected]>
Reviewed-by: Brett Creeley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Device binds to proper PCI ID (LOONGSON, 0x7a03), already listed in DTS,
so checking for some other compatible does not make sense. It cannot be
bound to unsupported platform.
Drop useless, incorrect (space in between) and undocumented compatible.
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Yanteng Si <[email protected]>
Reviewed-by: Conor Dooley <[email protected]>
Acked-by: Jiaxun Yang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Generic code will use mdio. If it is not initialized before use,
the kernel will Oops.
Fixes: 30bba69d7db4 ("stmmac: pci: Add dwmac support for Loongson")
Signed-off-by: Yanteng Si <[email protected]>
Signed-off-by: Feiyang Chen <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
In the `ath_set_channel()` function, we only reset surveys that are not
from the current channel. This leads to the accumulation of survey data for
the current channel indefinitely. This may not be the most optimal
approach, as we want the ACS to rely on the most recent survey.
So reset the survey data for the current channel at the start of each scan.
Signed-off-by: Hancheng Yang <[email protected]>
Acked-by: Toke Høiland-Jørgensen <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
|
|
Complete all counters on XGMAC Core.
These can be useful for debugging.
Signed-off-by: Furong Xu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Drop specific PHY ID check for cable test functions for at803x. This is
done to make functions more generic. While at it better describe what
the functions does by using more symbolic function names.
PHYs that requires to set additional reg are moved to specific function
calling the more generic one.
cdt_start and cdt_wait_for_completion are changed to take an additional
arg to pass specific values specific to the PHY.
Signed-off-by: Christian Marangi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Move at8035 specific DT parse for clock out frequency to dedicated probe
to make at803x probe function more generic.
This is to tidy code and no behaviour change are intended.
Detection logic is changed, we check if the clk 25m mask is set and if
it's not zero, we assume the qca,clk-out-frequency property is set.
The property is checked in the generic at803x_parse_dt called by
at803x_probe.
Signed-off-by: Christian Marangi <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Move at8031 functions in dedicated section with dedicated at8031
parse_dt and probe.
Signed-off-by: Christian Marangi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Rename at8031 related DT function name to a more specific name
referencing they are only related to at8031 and not to the generic
at803x PHY family.
Signed-off-by: Christian Marangi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Move specific at8031 config_intr bits to dedicated function to make
at803x_config_initr more generic.
This is needed in preparation for PHY driver split as qca8081 share the
same function to setup interrupts.
Signed-off-by: Christian Marangi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Move specific at8031 WOL enable/disable to dedicated function to make
at803x_set_wol more generic.
This is needed in preparation for PHY driver split as qca8081 share the
same function to toggle WOL settings.
In this new implementation WOL module in at8031 is enabled after the
generic interrupt is setup. This should not cause any problem as the
WOL_INT has a separate implementation and only relay on MAC bits.
Signed-off-by: Christian Marangi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Move specific at8031 config_init to dedicated function to make
at803x_config_init more generic and tidy things up.
Signed-off-by: Christian Marangi <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Move specific at8031 probe mode check to dedicated probe to make
at803x_probe more generic and keep code tidy.
Signed-off-by: Christian Marangi <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Move specific DT options for at8031 to specific probe to tidy things up
and make at803x_parse_dt more generic.
Signed-off-by: Christian Marangi <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Rework qca83xx specific check to dedicated function to tidy things up
and drop useless phy_id check.
Also drop an useless link_change_notify for QCA8337 as it did nothing an
returned early.
Signed-off-by: Christian Marangi <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
The function and the struct related to hw_stats were specific to qca83xx
PHY but were called following the convention in the driver of calling
everything with at803x prefix.
To better organize the code, rename these function a more specific name
to better describe that they are specific to 83xx PHY family.
Signed-off-by: Christian Marangi <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Move the WOL disable call to specific at8031 probe to make at803x_probe
more generic and drop extra check for PHY ID.
Keep the same previous behaviour by first calling at803x_probe and then
disabling WOL.
Signed-off-by: Christian Marangi <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Fix passing the wrong reference for config_initr on passing the function
pointer, drop the wrong & from at803x_config_intr in the PHY struct.
Signed-off-by: Christian Marangi <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Mode supported is currently reported to the user exactly the same, as
the current mode. That's because mode changing is not implemented.
Remove the leftover mode_supported() op and use mode_get() to fill up
the supported mode exposed to user.
One, if even, mode changing is going to be introduced, this could be
very easily taken back. In the meantime, prevent drivers form
implementing this in wrong way (as for example recent netdevsim
implementation attempt intended to do).
Signed-off-by: Jiri Pirko <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
When sending TX packets, the meta descriptor can be all zeroes
as no meta information is required (as in XDP).
This patch removes the validity check, as when
`disable_meta_caching` is enabled, such TX packets will be
dropped otherwise.
Fixes: 0e3a3f6dacf0 ("net: ena: support new LLQ acceleration mode")
Signed-off-by: Shay Agroskin <[email protected]>
Signed-off-by: David Arinzon <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
This patch fixes two issues:
Issue 1
-------
Description
```````````
Current code does not call dma_sync_single_for_cpu() to sync data from
the device side memory to the CPU side memory before the XDP code path
uses the CPU side data.
This causes the XDP code path to read the unset garbage data in the CPU
side memory, resulting in incorrect handling of the packet by XDP.
Solution
````````
1. Add a call to dma_sync_single_for_cpu() before the XDP code starts to
use the data in the CPU side memory.
2. The XDP code verdict can be XDP_PASS, in which case there is a
fallback to the non-XDP code, which also calls
dma_sync_single_for_cpu().
To avoid calling dma_sync_single_for_cpu() twice:
2.1. Put the dma_sync_single_for_cpu() in the code in such a place where
it happens before XDP and non-XDP code.
2.2. Remove the calls to dma_sync_single_for_cpu() in the non-XDP code
for the first buffer only (rx_copybreak and non-rx_copybreak
cases), since the new call that was added covers these cases.
The call to dma_sync_single_for_cpu() for the second buffer and on
stays because only the first buffer is handled by the newly added
dma_sync_single_for_cpu(). And there is no need for special
handling of the second buffer and on for the XDP path since
currently the driver supports only single buffer packets.
Issue 2
-------
Description
```````````
In case the XDP code forwarded the packet (ENA_XDP_FORWARDED),
ena_unmap_rx_buff_attrs() is called with attrs set to 0.
This means that before unmapping the buffer, the internal function
dma_unmap_page_attrs() will also call dma_sync_single_for_cpu() on
the whole buffer (not only on the data part of it).
This sync is both wasteful (since a sync was already explicitly
called before) and also causes a bug, which will be explained
using the below diagram.
The following diagram shows the flow of events causing the bug.
The order of events is (1)-(4) as shown in the diagram.
CPU side memory area
(3)convert_to_xdp_frame() initializes the
headroom with xdpf metadata
||
\/
___________________________________
| |
0 | V 4K
---------------------------------------------------------------------
| xdpf->data | other xdpf | < data > | tailroom ||...|
| | fields | | GARBAGE || |
---------------------------------------------------------------------
/\ /\
|| ||
(4)ena_unmap_rx_buff_attrs() calls (2)dma_sync_single_for_cpu()
dma_sync_single_for_cpu() on the copies data from device
whole buffer page, overwriting side to CPU side memory
the xdpf->data with GARBAGE. ||
0 4K
---------------------------------------------------------------------
| headroom | < data > | tailroom ||...|
| GARBAGE | | GARBAGE || |
---------------------------------------------------------------------
Device side memory area /\
||
(1) device writes RX packet data
After the call to ena_unmap_rx_buff_attrs() in (4), the xdpf->data
becomes corrupted, and so when it is later accessed in
ena_clean_xdp_irq()->xdp_return_frame(), it causes a page fault,
crashing the kernel.
Solution
````````
Explicitly tell ena_unmap_rx_buff_attrs() not to call
dma_sync_single_for_cpu() by passing it the ENA_DMA_ATTR_SKIP_CPU_SYNC
flag.
Fixes: f7d625adeb7b ("net: ena: Add dynamic recycling mechanism for rx buffers")
Signed-off-by: Arthur Kiyanovski <[email protected]>
Signed-off-by: David Arinzon <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
Current xdp code drops packets larger than ENA_XDP_MAX_MTU.
This is an incorrect condition since the problem is not the
size of the packet, rather the number of buffers it contains.
This commit:
1. Identifies and drops XDP multi-buffer packets at the
beginning of the function.
2. Increases the xdp drop statistic when this drop occurs.
3. Adds a one-time print that such drops are happening to
give better indication to the user.
Fixes: 838c93dc5449 ("net: ena: implement XDP drop support")
Signed-off-by: Arthur Kiyanovski <[email protected]>
Signed-off-by: David Arinzon <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
The ena_setup_and_create_all_xdp_queues() function freed all the
resources upon failure, after creating only xdp_num_queues queues,
instead of freeing just the created ones.
In this patch, the only resources that are freed, are the ones
allocated right before the failure occurs.
Fixes: 548c4940b9f1 ("net: ena: Implement XDP_TX action")
Signed-off-by: Shahar Itzko <[email protected]>
Signed-off-by: David Arinzon <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
In a busy network, especially with flow control enabled, we may
experience timestamp query failures fairly regularly. After a while,
dmesg may be flooded with timestamp query failure error messages.
Silence the error message from the low level hwrm function that
sends the firmware message. Change netdev_err() to netdev_WARN_ONCE()
if this FW call ever fails.
Signed-off-by: Pavan Chebbi <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
We don't have to close and open the nic to make sure we have
valid rx timestamps. Once we have the timestamp filter applied to
the HW and the timestamp_fld_format bit is cleared in the rx
completion and the timestamp is non-zero, we can be sure that rx
timestamp is valid data.
Skip close/open when we set any timestamp filter.
Reviewed-by: Andy Gospodarek <[email protected]>
Signed-off-by: Pavan Chebbi <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
The new 5760X chips supports UDP GSO. Tested using udpgso_bench_tx.
Reviewed-by: Andy Gospodarek <[email protected]>
Reviewed-by: Somnath Kotur <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
rx_filter_miss counter is newly added to the rx_port_stats_ext
stats structure for newer chips. Newer firmware will return the
structure size that includes this counter. Add this entry to
the bnxt_port_stats_ext_arr array and the ethtool -S code will
pick up this counter if it is supported.
Signed-off-by: Damodharam Ammepalli <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
On the new P7 chips, TPA for tunnel packets can be independently
enabled for each VNIC. The default TPA configuration should not
include UDP tunnels because the UDP ports for these tunnels are not
known yet. The chip should not aggregate these UDP tunneled packets
using default UDP ports until the ports are known.
Add a new function bnxt_hwrm_vnic_update_tunl_tpa() to enable VXLAN
and Geneve TPA if the corresponding UDP ports are known.
Reviewed-by: Ajit Khaparde <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
Add a new bnxt_udp_tunnels_p7 struct to support the new P7 chips that
can parse VXLAN GPE packets. Add VXLAN GPE tunnel type handling to
the .set_port() and .unset_port() functions. .ndo_features_check()
is also enhanced to support VXLAN GPE which may encapsulate inner
IP packets instead of ethernet packets.
Reviewed-by: Damodharam Ammepalli <[email protected]>
Reviewed-by: Ajit Khaparde <[email protected]>
Reviewed-by: Somnath Kotur <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
In bnxt_udp_tunnel_set_port(), use the proper ALLOC commands instead
of the FREE commands for correctness. The ALLOC and FREE commands
happen to be identical so this is just a cosmetic fix for correctness.
Reviewed-by: Somnath Kotur <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
The Fast QP modify destroy RoCE feature requires additional QP entries
in QP context backing store. FW reports the extra count to be
allocated during backing store query. Use this value and allocate extra
memory. Note that this works for both the V1 and V1 backing store
FW APIs.
Signed-off-by: Selvin Xavier <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
TX coalesced completions are supported on newer chips to provide
one TX completion record for multiple TX packets up to the
sq_cons_idx in the completion record. This method saves PCIe
bandwidth by reducing the number of TX completions.
Only very minor changes are now required to support this mode
with the new framework that handles TX completions based on
the consumer indices.
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
If xmit_more condition is true, the driver may set the
TX_BD_FLAGS_NO_CMPL flag. If after this packet, the TX ring can no
longer hold a packet with maximum fragments, we will stop the TX
queue. When this happens, we must clear the TX_BD_FLAGS_NO_CMPL flag
on the last packet or there will be no completion and cause TX
timeout.
Fixes: c1056a59aee1 ("bnxt_en: Optimize xmit_more TX path")
Reviewed-by: Somnath Kotur <[email protected]>
Reviewed-by: Andy Gospodarek <[email protected]>
Reviewed-by: Hongguang Gao <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
Two spots were missed when modifying the TX ring indexing logic.
The use of unmasked TX index in bnxt_tx_int() will cause unnecessary
__bnxt_tx_int() calls. The same issue in bnxt_tx_int_xdp() can
result in illegal array index.
Fixes: 6d1add95536b ("bnxt_en: Modify TX ring indexing logic.")
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
_bnxt_get_max_rings() that is invoked in bnxt_check_rings() already
accounts for the AGG ring(s) and gives a max value based on that.
Increasing for AGG rings before calling _bnxt_get_max_rings() will
result in checking for twice the number of rings than required and
it can fail. Fix it by adjusting for AGG rings after calling
_bnxt_get_max_rings().
Fixes: f5b29c6afe36 ("bnxt_en: Add helper to get the number of CP rings required for TX rings")
Signed-off-by: Somnath Kotur <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
The recent commit to trim the RX and TX rings on P5 chips by assigning
each with max CP rings divided by 2 is not correct. Max CP rings
divided by 2 may be bigger than the original RX or TX and would
lead to failure. In other words, we may be checking for increased
RX/TX rings than required and it may fail.
Fix it by calling __bnxt_trim_rings() instead that would properly
trim RX and TX without the possibility of increasing their values.
Fixes: f5b29c6afe36 ("bnxt_en: Add helper to get the number of CP rings required for TX rings")
Reviewed-by: Pavan Chebbi <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
strncpy() is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous string
interfaces.
We expect new_bus->id to be NUL-terminated but not NUL-padded based on
its prior assignment through snprintf:
| snprintf(new_bus->id, MII_BUS_ID_SIZE, "gpio-%x", bus_id);
Due to this, a suitable replacement is `strscpy` [2] due to the fact
that it guarantees NUL-termination on the destination buffer without
unnecessarily NUL-padding.
We can also use sizeof() instead of a length macro as this more closely
ties the maximum buffer size to the destination buffer. Do this for two
instances.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
Link: https://github.com/KSPP/linux/issues/90
Signed-off-by: Justin Stitt <[email protected]>
Reviewed-by: Russell King (Oracle) <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Link: https://lore.kernel.org/r/20231211-strncpy-drivers-net-mdio-mdio-gpio-c-v3-1-76dea53a1a52@google.com
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Linus Walleij says:
====================
Immutable tag for the PEF2256 framer
* tag 'pef2256-framer' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
MAINTAINERS: Add the Lantiq PEF2256 driver entry
pinctrl: Add support for the Lantic PEF2256 pinmux
net: wan: framer: Add support for the Lantiq PEF2256 framer
dt-bindings: net: Add the Lantiq PEF2256 E1/T1/J1 framer
net: wan: Add framer framework support
====================
Link: https://lore.kernel.org/all/CACRpkdYT1J7noFUhObFgfA60XQAfL4rb=knEmWS__TKKtCMh7Q@mail.gmail.com/
Signed-off-by: Jakub Kicinski <[email protected]>
|
|
The Lantiq PEF2256 is a framer and line interface component designed to
fulfill all required interfacing between an analog E1/T1/J1 line and the
digital PCM system highway/H.100 bus.
Signed-off-by: Herve Codina <[email protected]>
Reviewed-by: Christophe Leroy <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Acked-by: Jakub Kicinski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
|
|
A framer is a component in charge of an E1/T1 line interface.
Connected usually to a TDM bus, it converts TDM frames to/from E1/T1
frames. It also provides information related to the E1/T1 line.
The framer framework provides a set of APIs for the framer drivers
(framer provider) to create/destroy a framer and APIs for the framer
users (framer consumer) to obtain a reference to the framer, and
use the framer.
This basic implementation provides a framer abstraction for:
- power on/off the framer
- get the framer status (line state)
- be notified on framer status changes
- get/set the framer configuration
Signed-off-by: Herve Codina <[email protected]>
Reviewed-by: Christophe Leroy <[email protected]>
Acked-by: Jakub Kicinski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
|