- 30 Apr, 2020 40 commits
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Taehee Yoo authored
When all hsr slave interfaces are removed, hsr interface doesn't work. At that moment, it's fine to remove an unused hsr interface automatically for saving resources. That's a common behavior of virtual interfaces. Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Eric Dumazet says: ==================== tcp: sack compression changes Patch series refines SACK compression. We had issues with missing SACK when TCP option space is tight. Uses hrtimer slack to improve performance. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
Add a sysctl to control hrtimer slack, default of 100 usec. This gives the opportunity to reduce system overhead, and help very short RTT flows. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
Currently, tcp_sack_new_ofo_skb() sends an ack if prior acks were 'compressed', if room has to be made in tp->selective_acks[] But there is no guarantee all four sack ranges can be included in SACK option. As a matter of fact, when TCP timestamps option is used, only three SACK ranges can be included. Lets assume only two ranges can be included, and force the ack: - When we touch more than 2 ranges in the reordering done if tcp_sack_extend() could be done. - If we have at least 2 ranges when adding a new one. This enforces that before a range is in third or fourth position, at least one ACK packet included it in first/second position. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
In commit 86de5921 ("tcp: defer SACK compression after DupThresh") I added a TCP_FASTRETRANS_THRESH bias to tp->compressed_ack in order to enable sack compression only after 3 dupacks. Since we plan to relax this rule for flows that involve stacks not requiring this old rule, this patch adds a distinct tp->dup_ack_counter. This means the TCP_FASTRETRANS_THRESH value is now used in a single location that a future patch can adjust: if (tp->dup_ack_counter < TCP_FASTRETRANS_THRESH) { tp->dup_ack_counter++; goto send_now; } This patch also introduces tcp_sack_compress_send_ack() helper to ease following patch comprehension. This patch refines LINUX_MIB_TCPACKCOMPRESSED to not count the acks that we had to send if the timer expires or tcp_sack_compress_send_ack() is sending an ack. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: ==================== mlx5-updates-2020-04-30 1) Add release all pages support, From Eran. to release all FW pages at once on driver unload, when supported by FW. 2) From Maxim and Tariq, Trivial Data path cleanup and code improvements in preparation for their next features, TLS offload and TX performance improvements 3) Multiple cleanups. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Ido Schimmel says: ==================== mlxsw: Prepare SPAN API for upcoming changes Switched port analyzer (SPAN) is used for packet mirroring. Over mlxsw this is achieved by attaching tc-mirred action to either matchall or flower classifier. The current API used to configure SPAN consists of two functions: mlxsw_sp_span_mirror_add() and mlxsw_sp_span_mirror_del(). These two functions pack a lot of different operations: * SPAN agent configuration: Determining the egress port and optional headers that need to encapsulate the mirrored packet (when mirroring to a gretap, for example) * Egress mirror buffer configuration: Allocating / freeing a buffer when port is analyzed (inspected) at egress * SPAN agent binding: Binding the SPAN agent to a trigger, if any. The current triggers are incoming / outgoing packet and they are only used for matchall-based mirroring This non-modular design makes it difficult to extend the API for future changes, such as new mirror targets (CPU) and new global triggers (early dropped packets, for example). Therefore, this patch set gradually adds APIs for above mentioned operations and then converts the two existing users to use it instead of the old API. No functional changes intended. Tested with existing mirroring selftests. Patch set overview: Patches #1-#5 gradually add the new API Patches #6-#8 convert existing users to use the new API Patch #9 removes the old API ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
Remove the old SPAN API now that matchall-based and flower-based mirroring were converted to use the new API. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
As previously explained, each port whose outgoing traffic is analyzed needs to have an egress mirror buffer. The size of the egress mirror buffer is calculated based on various parameters, two of which are the speed and the MTU of the port. Therefore, when the MTU or the speed of a port change, the SPAN code is called to see if the egress mirror buffer of the port needs to be adjusted. Currently, this is done by traversing all the SPAN agents and for each SPAN agent the list of bound ports is traversed. Instead of the above, traverse the recently added list of analyzed ports. This will later allow us to remove the old SPAN API. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
In flower-based mirroring, mirroring is done with ACLs and the SPAN agent is not bound to a port. Instead its identifier is specified in an ACL action. Convert this type of mirroring to use the new API. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
In matchall-based mirroring, mirroring is not done with ACLs, but a SPAN agent is bound to the ingress / egress of a port and all incoming / outgoing traffic is mirrored. Convert this type of mirroring to use the new API. First the SPAN agent is resolved, then the port is marked as analyzed and its egress mirror buffer is potentially allocated. Lastly, the binding is performed. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
Currently, a SPAN agent can only be bound to a per-port trigger where the trigger is either an incoming packet (INGRESS) or an outgoing packet (EGRESS) to / from the port. A follow-up patch set will introduce the concept of global triggers and per-{port, TC} enablement. With global triggers, the trigger entry is only keyed by a trigger and not by a port and a trigger. The trigger can be, for example, a packet that was early dropped. While the binding between the SPAN agent and the trigger is performed only once, the trigger entry needs to be reference counted, as the trigger can be enabled on multiple ports. Add APIs to bind / unbind a SPAN agent to a trigger and reference count the trigger entry in preparation for global triggers. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
The code that adjusts the egress buffer size is not symmetric at the moment. The update is done via a call to mlxsw_sp_span_port_buffer_update(), but the disablement is done inline by invoking the write to SBIB register directly. Wrap the disablement code in mlxsw_sp_span_port_buffer_disable(). Signed-off-by: Ido Schimmel <idosch@mellanox.com> Suggested-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
Next patch will introduce mlxsw_sp_span_port_buffer_disable() function that disables the egress buffer on an analyzed port. Rename the opposite function that updates the buffer on an analyzed port accordingly. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Suggested-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
An analyzed port is a port whose incoming / outgoing traffic is mirrored to a SPAN agent and analyzed on a remote server. A port can be analyzed by multiple tc filters and therefore the corresponding analyzed port entry needs to be reference counted. This is significant because ports whose outgoing traffic is analyzed need to have an egress mirror buffer. Add APIs to get / put an analyzed port. Allocate an egress mirror buffer on a port when it is first inspected at egress and free the buffer when it is no longer inspected at egress. Protect the list of analyzed ports with a mutex, as a later patch will traverse it from a context in which RTNL lock is not held. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
Given a netdev that packets should be mirrored to, create a SPAN agent and return its identifier to the caller. The SPAN agent is reference counted, as multiple tc-mirred actions can point to the same destination netdev. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Mauro Carvalho Chehab says: ==================== net: manually convert files to ReST format - part 2 That's the second part of my work to convert the networking text files into ReST. it is based on today's linux-next (next-20200430). The full series (including those ones) are at: https://git.linuxtv.org/mchehab/experimental.git/log/?h=net-docs I should be sending the remaining patches (another /38 series) after getting those merged at -next. The documents, converted to HTML via the building system are at: https://www.infradead.org/~mchehab/kernel_docs/networking/ ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - adjust title markup; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - add a document title; - adjust titles and chapters, adding proper markups; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
Not much to be done here: - add SPDX header; - add a document title; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
Not much to be done here: - add SPDX header; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - add a document title; - use the right numbered list markup; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - use copyright symbol; - adjust title markup; - mark code blocks and literals as such; - mark tables as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - adjust title markup; - mark code blocks and literals as such; - mark tables as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - use copyright symbol; - add a document title; - adjust titles and chapters, adding proper markups; - comment out text-only TOC from html/pdf output; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - mark code blocks and literals as such; - add a document title; - adjust chapters, adding proper markups; - mark lists as such; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
Not much to be done here: - add SPDX header; - add a document title; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - add a document title; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - adjust title markup; - use autonumbered list markups; - mark code blocks and literals as such; - mark tables as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - adjust title markup; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - add a document title; - mark code blocks and literals as such; - mark tables as such; - mark lists as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - use copyright symbol; - add a document title; - mark code blocks and literals as such; - mark tables as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - adjust title markup; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - add a document title; - mark code blocks and literals as such; - mark tables as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - adjust title markup; - mark code blocks and literals as such; - mark tables as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - adjust title markup; - use bold markups on a few places; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - adjust title markup; - use copyright symbol; - add notes markups; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Rémi Denis-Courmont <courmisch@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
This patch has a big diff, but most are due to whitespaces. Yet, the conversion is similar to other files under networking: - add SPDX header; - add a document title; - adjust titles and chapters, adding proper markups; - mark lists as such; - mark tables as such; - mark code blocks and literals as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mauro Carvalho Chehab authored
- add SPDX header; - add a document title; - adjust chapters, adding proper markups; - mark lists as such; - adjust identation, whitespaces and blank lines where needed; - add to networking/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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