- 31 Jul, 2019 16 commits
-
-
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: ==================== mlx5-updates-2019-07-29 This series includes updates to mlx5 driver, 1) Simplifications, cleanup and warning prints improvements 2) From Vlad Buslov: Refactor mlx5 tc flow handling for unlocked execution (Part 1) Currently, all cls API hardware offloads driver callbacks require caller to hold rtnl lock when calling them. Cls API has already been updated to update software filters in parallel (on classifiers that support unlocked execution), however hardware offloads code still obtains rtnl lock before calling driver tc callbacks. This set implements partial support for unlocked execution that is leveraged by follow up refactorings in specific mlx5 tc subsystems and patch to cls API that implements API that allows drivers to register their callbacks as rtnl-unlocked. In mlx5 tc code mlx5e_tc_flow is the main structure that is used to represent tc filter. Currently, code the structure itself and its handlers in both tc and eswitch layers do not implement any kind of synchronizations and assume external global synchronization provided by rtnl lock instead. Implement following changes to remove dependency on rtnl lock in flow handling code that are intended to be used a groundwork for following changes to provide fully rtnl-independent mlx5 tc: - Extend struct mlx5e_tc_flow with atomic reference counter and rcu to allow concurrent access from multiple tc and neigh update workqueue instances without introducing any additional locks specific to the structure. Its 'flags' field type is changed to atomic bitmask ops which is necessary for tc to interact with other concurrent tc instances or concurrent neigh update that need to skip flows that are not fully initialized (new INIT_DONE flow flag) and can change the flags according to neighbor state (flipping OFFLOADED flag). - Protect unready flows list by new uplink_priv->unready_flows_lock mutex. - Convert calls to netdev APIs that require rtnl lock in flow handling code to their rcu counterparts. - Modify eswitch code that is called from tc layer and assume implicit external synchronization to be concurrency safe: change esw->offloads.num_flows type to atomic integer and re-arrange esw->state_lock usage to protect additional data. Some of approaches to synchronizations presented in this patch set are quite complicated (lockless concurrent usage of data structures with rcu and reference counting, using fine-grained locking when necessary, retry mechanisms to handle concurrent insertion of another instance of data structure with same key, etc.). This is necessary to allow calling the firmware in parallel in most cases, which is the main motivation of this change since firmware calls are mach heavier operation than atomic operations, multitude of locks and potential multiple retries during concurrent accesses to same elements. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
-
YueHaibing authored
While do COMPILE_TEST build without CONFIG_NETDEVICES, we get Kconfig warning: WARNING: unmet direct dependencies detected for PHYLIB Depends on [n]: NETDEVICES [=n] Selected by [y]: - OCTEON_ETHERNET [=y] && STAGING [=y] && (CAVIUM_OCTEON_SOC && NETDEVICES [=n] || COMPILE_TEST [=y]) Reported-by:
Hulk Robot <hulkci@huawei.com> Reported-by:
Mark Brown <broonie@kernel.org> Fixes: 171a9bae ("staging/octeon: Allow test build on !MIPS") Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
-
David S. Miller authored
Merge tag 'mac80211-next-for-davem-2019-07-31' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg says: ==================== We have a reasonably large number of changes: * lots more HE (802.11ax) support, particularly things relevant for the the AP side, but also mesh support * debugfs cleanups from Greg * some more work on extended key ID * start using genl parallel_ops, as preparation for weaning ourselves off RTNL and getting parallelism * various other changes all over ==================== Signed-off-by:
-
David S. Miller authored
Petr Machata says: ==================== mlxsw: Test coverage for DSCP leftover fix This patch set fixes some global scope pollution issues in the DSCP tests (in patch #1), and then proceeds (in patch #2) to add a new test for checking whether, after DSCP prioritization rules are removed from a port, DSCP rewrites consistently to zero, instead of the last removed rule still staying in effect. ==================== Signed-off-by: -
Petr Machata authored
Commit dedfde2f ("mlxsw: spectrum_dcb: Configure DSCP map as the last rule is removed") fixed a problem in mlxsw where last DSCP rule to be removed remained in effect when DSCP rewrite was applied. Add a selftest that covers this problem. Signed-off-by:
Petr Machata <petrm@mellanox.com> Signed-off-by:
-
Petr Machata authored
These two tests have some problems in the global scope pollution and on contrary, contain unnecessary local declarations. Fix them. Signed-off-by:
-
Ding Xiang authored
"error" is unneeded,just return 0 Signed-off-by:
Ding Xiang <dingxiang@cmss.chinamobile.com> Signed-off-by:
-
Christophe JAILLET authored
A few lines above, we have: tx_size = BIT(tx->order); So use 'tx_size' directly to be consistent with the way 'rx->descs_cpu' and 'rx->descs_dma' are computed below. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
-
Shay Bar authored
In case of HE AP-STA link, ieee80211_send_nullfunc() will not send the QOS NULL packet to check if AP is still associated. In this case, probe_send_count will be non-zero and ieee80211_sta_work() will later disassociate the AP, even though no packet was ever sent. Fix this by decrementing probe_send_count and not calling ieee80211_send_nullfunc() in case of HE link, so that we still wait for some time for the AP beacon to reappear and don't disconnect right away. Signed-off-by:
Shay Bar <shay.bar@celeno.com> Link: https://lore.kernel.org/r/20190703131848.22879-1-shay.bar@celeno.com [clarify commit message] Signed-off-by:
Johannes Berg <johannes.berg@intel.com>
-
John Crispin authored
Store the OBSS PD parameters inside bss_conf when bringing up an AP and/or when a station connects to an AP. This allows the driver to configure the HW accordingly. Signed-off-by:
John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20190730163701.18836-3-john@phrozen.orgSigned-off-by:
-
Johannes Berg authored
Add a strict start type so all new attributes starting from NL80211_ATTR_HE_OBSS_PD are validated strictly. Signed-off-by: -
John Crispin authored
Add the data structure, policy and parsing code allowing userland to send the OBSS PD information into the kernel. Signed-off-by:
-
Karthikeyan Periyasamy authored
This came up in fuzz testing, and really we don't consider all-zeroes to be a valid MAC address in most places, so also reject it here to avoid confusion later on. Signed-off-by:
Karthikeyan Periyasamy <periyasa@codeaurora.org> Link: https://lore.kernel.org/r/1563959770-21570-1-git-send-email-periyasa@codeaurora.org [rewrite commit message] Signed-off-by:
-
Johannes Berg authored
Over time, we really need to get rid of all of our global locking. One of the things needed is to use parallel_ops. This isn't really the most important (RTNL is much more important) but OTOH we just keep adding uses of genl_family_attrbuf() now. Use .parallel_ops to disallow this. Reviewed-By:
Denis Kenzior <denkenz@gmail.com> Link: https://lore.kernel.org/r/20190729143109.18683-1-johannes@sipsolutions.netSigned-off-by:
-
Johannes Berg authored
Give a proper boottime_ns value for netlink RX to avoid scan issues here. Signed-off-by:
-
Colin Ian King authored
The return from ieee80211_get_sband can potentially be a null pointer, so it seems prudent to add a null check to avoid a null pointer dereference on sband. Addresses-Coverity: ("Dereference null return") Fixes: 2ab45876 ("mac80211: add support for the ADDBA extension element") Signed-off-by:Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20190730143205.14261-1-colin.king@canonical.comSigned-off-by:
-
- 30 Jul, 2019 22 commits
-
-
David S. Miller authored
Marek Vasut says: ==================== net: dsa: ksz: Add Microchip KSZ87xx support This series adds support for Microchip KSZ87xx switches, which are slightly simpler compared to KSZ9xxx . ==================== Signed-off-by:
Marek Vasut <marex@denx.de> Signed-off-by:
-
Tristram Ha authored
Add Microchip KSZ8795 DSA driver. Signed-off-by:
Tristram Ha <Tristram.Ha@microchip.com> Signed-off-by:
-
Tristram Ha authored
Add DSA tag code for Microchip KSZ8795 switch. The switch is simpler and the tag is only 1 byte, instead of 2 as is the case with KSZ9477. Signed-off-by:
-
Marek Vasut authored
Document Microchip KSZ87xx family switches. These include KSZ8765 - 5 port switch KSZ8794 - 4 port switch KSZ8795 - 5 port switch Signed-off-by:
-
David S. Miller authored
Stefano Garzarella says: ==================== vsock/virtio: optimizations to increase the throughput This series tries to increase the throughput of virtio-vsock with slight changes. While I was testing the v2 of this series I discovered an huge use of memory, so I added patch 1 to mitigate this issue. I put it in this series in order to better track the performance trends. v5: - rebased all patches on net-next - added Stefan's R-b and Michael's A-b v4: https://patchwork.kernel.org/cover/11047717 v3: https://patchwork.kernel.org/cover/10970145 v2: https://patchwork.kernel.org/cover/10938743 v1: https://patchwork.kernel.org/cover/10885431 Below are the benchmarks step by step. I used iperf3 [1] modified with VSOCK support. As Michael suggested in the v1, I booted host and guest with 'nosmap'. A brief description of patches: - Patches 1: limit the memory usage with an extra copy for small packets - Patches 2+3: reduce the number of credit update messages sent to the transmitter - Patches 4+5: allow the host to split packets on multiple buffers and use VIRTIO_VSOCK_MAX_PKT_BUF_SIZE as the max packet size allowed host -> guest [Gbps] pkt_size before opt p 1 p 2+3 p 4+5 32 0.032 0.030 0.048 0.051 64 0.061 0.059 0.108 0.117 128 0.122 0.112 0.227 0.234 256 0.244 0.241 0.418 0.415 512 0.459 0.466 0.847 0.865 1K 0.927 0.919 1.657 1.641 2K 1.884 1.813 3.262 3.269 4K 3.378 3.326 6.044 6.195 8K 5.637 5.676 10.141 11.287 16K 8.250 8.402 15.976 16.736 32K 13.327 13.204 19.013 20.515 64K 21.241 21.341 20.973 21.879 128K 21.851 22.354 21.816 23.203 256K 21.408 21.693 21.846 24.088 512K 21.600 21.899 21.921 24.106 guest -> host [Gbps] pkt_size before opt p 1 p 2+3 p 4+5 32 0.045 0.046 0.057 0.057 64 0.089 0.091 0.103 0.104 128 0.170 0.179 0.192 0.200 256 0.364 0.351 0.361 0.379 512 0.709 0.699 0.731 0.790 1K 1.399 1.407 1.395 1.427 2K 2.670 2.684 2.745 2.835 4K 5.171 5.199 5.305 5.451 8K 8.442 8.500 10.083 9.941 16K 12.305 12.259 13.519 15.385 32K 11.418 11.150 11.988 24.680 64K 10.778 10.659 11.589 35.273 128K 10.421 10.339 10.939 40.338 256K 10.300 9.719 10.508 36.562 512K 9.833 9.808 10.612 35.979 As Stefan suggested in the v1, I measured also the efficiency in this way: efficiency = Mbps / (%CPU_Host + %CPU_Guest) The '%CPU_Guest' is taken inside the VM. I know that it is not the best way, but it's provided for free from iperf3 and could be an indication. host -> guest efficiency [Mbps / (%CPU_Host + %CPU_Guest)] pkt_size before opt p 1 p 2+3 p 4+5 32 0.35 0.45 0.79 1.02 64 0.56 0.80 1.41 1.54 128 1.11 1.52 3.03 3.12 256 2.20 2.16 5.44 5.58 512 4.17 4.18 10.96 11.46 1K 8.30 8.26 20.99 20.89 2K 16.82 16.31 39.76 39.73 4K 30.89 30.79 74.07 75.73 8K 53.74 54.49 124.24 148.91 16K 80.68 83.63 200.21 232.79 32K 132.27 132.52 260.81 357.07 64K 229.82 230.40 300.19 444.18 128K 332.60 329.78 331.51 492.28 256K 331.06 337.22 339.59 511.59 512K 335.58 328.50 331.56 504.56 guest -> host efficiency [Mbps / (%CPU_Host + %CPU_Guest)] pkt_size before opt p 1 p 2+3 p 4+5 32 0.43 0.43 0.53 0.56 64 0.85 0.86 1.04 1.10 128 1.63 1.71 2.07 2.13 256 3.48 3.35 4.02 4.22 512 6.80 6.67 7.97 8.63 1K 13.32 13.31 15.72 15.94 2K 25.79 25.92 30.84 30.98 4K 50.37 50.48 58.79 59.69 8K 95.90 96.15 107.04 110.33 16K 145.80 145.43 143.97 174.70 32K 147.06 144.74 146.02 282.48 64K 145.25 143.99 141.62 406.40 128K 149.34 146.96 147.49 489.34 256K 156.35 149.81 152.21 536.37 512K 151.65 150.74 151.52 519.93 [1] https://github.com/stefano-garzarella/iperf/ ==================== Acked-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
-
Stefano Garzarella authored
Since now we are able to split packets, we can avoid limiting their sizes to VIRTIO_VSOCK_DEFAULT_RX_BUF_SIZE. Instead, we can use VIRTIO_VSOCK_MAX_PKT_BUF_SIZE as the max packet size. Signed-off-by:
Stefano Garzarella <sgarzare@redhat.com> Reviewed-by:
Stefan Hajnoczi <stefanha@redhat.com> Acked-by:
-
Stefano Garzarella authored
If the packets to sent to the guest are bigger than the buffer available, we can split them, using multiple buffers and fixing the length in the packet header. This is safe since virtio-vsock supports only stream sockets. Signed-off-by:
-
Stefano Garzarella authored
fwd_cnt and last_fwd_cnt are protected by rx_lock, so we should use the same spinlock also if we are in the TX path. Move also buf_alloc under the same lock. Signed-off-by:
-
Stefano Garzarella authored
In order to reduce the number of credit update messages, we send them only when the space available seen by the transmitter is less than VIRTIO_VSOCK_MAX_PKT_BUF_SIZE. Signed-off-by:
-
Stefano Garzarella authored
Since virtio-vsock was introduced, the buffers filled by the host and pushed to the guest using the vring, are directly queued in a per-socket list. These buffers are preallocated by the guest with a fixed size (4 KB). The maximum amount of memory used by each socket should be controlled by the credit mechanism. The default credit available per-socket is 256 KB, but if we use only 1 byte per packet, the guest can queue up to 262144 of 4 KB buffers, using up to 1 GB of memory per-socket. In addition, the guest will continue to fill the vring with new 4 KB free buffers to avoid starvation of other sockets. This patch mitigates this issue copying the payload of small packets (< 128 bytes) into the buffer of last packet queued, in order to avoid wasting memory. Signed-off-by:
-
Stephen Boyd authored
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: "David S. Miller" <davem@davemloft.net> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: Saeed Mahameed <saeedm@mellanox.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Felix Fietkau <nbd@nbd.name> Cc: Lorenzo Bianconi <lorenzo@kernel.org> Cc: netdev@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:Stephen Boyd <swboyd@chromium.org> Signed-off-by:
-
David S. Miller authored
Jonathan Lemon says: ==================== Finish conversion of skb_frag_t to bio_vec The recent conversion of skb_frag_t to bio_vec did not include skb_frag's page_offset. Add accessor functions for this field, utilize them, and remove the union, restoring the original structure. v2: - rename accessors - follow kdoc conventions ==================== Reviewed-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
-
Jonathan Lemon authored
Now that page_offset is referenced through accessors, remove the union, and use bv_offset. Signed-off-by:
Jonathan Lemon <jonathan.lemon@gmail.com> Signed-off-by:
-
Jonathan Lemon authored
Use accessor functions for skb fragment's page_offset instead of direct references, in preparation for bvec conversion. Signed-off-by:
-
Jonathan Lemon authored
Add skb_frag_off(), skb_frag_off_add(), skb_frag_off_set(), and skb_frag_off_copy() accessors for page_offset. Signed-off-by:
-
David S. Miller authored
Xin Long says: ==================== sctp: clean up __sctp_connect function This patchset is to factor out some common code for sctp_sendmsg_new_asoc() and __sctp_connect() into 2 new functioins. v1->v2: - add the patch 1/5 to avoid a slab-out-of-bounds warning. - add some code comment for the check change in patch 2/5. - remove unused 'addrcnt' as Marcelo noticed in patch 3/5. ==================== Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
-
Xin Long authored
In this function factored out from sctp_sendmsg_new_asoc() and __sctp_connect(), it adds a peer with the other addr into the asoc after this asoc is created with the 1st addr. Signed-off-by:
Xin Long <lucien.xin@gmail.com> Signed-off-by:
-
Xin Long authored
In this function factored out from sctp_sendmsg_new_asoc() and __sctp_connect(), it creates the asoc and adds a peer with the 1st addr. Signed-off-by:
-
Xin Long authored
__sctp_connect is doing quit similar things as sctp_sendmsg_new_asoc. To factor out common functions, this patch is to clean up their code to make them look more similar: 1. create the asoc and add a peer with the 1st addr. 2. add peers with the other addrs into this asoc one by one. while at it, also remove the unused 'addrcnt'. Signed-off-by:
-
Xin Long authored
Now __sctp_connect() is called by __sctp_setsockopt_connectx() and sctp_inet_connect(), the latter has done addr_size check with size of sa_family_t. In the next patch to clean up __sctp_connect(), we will remove addr_size check with size of sa_family_t from __sctp_connect() for the 1st address. So before doing that, __sctp_setsockopt_connectx() should do this check first, as sctp_inet_connect() does. Signed-off-by:
-
Xin Long authored
'addr' passed to sctp_transport_init is not always a whole size of union sctp_addr, like the path: sctp_sendmsg() -> sctp_sendmsg_new_asoc() -> sctp_assoc_add_peer() -> sctp_transport_new() -> sctp_transport_init() In the next patches, we will also pass the address length of data only to sctp_assoc_add_peer(). So sctp_transport_init() should copy the only available data from addr to peer->ipaddr, instead of 'peer->ipaddr = *addr' which may cause slab-out-of-bounds. Signed-off-by:
-
David Howells authored
rxkad sometimes triggers a warning about oversized stack frames when building with clang for a 32-bit architecture: net/rxrpc/rxkad.c:243:12: error: stack frame size of 1088 bytes in function 'rxkad_secure_packet' [-Werror,-Wframe-larger-than=] net/rxrpc/rxkad.c:501:12: error: stack frame size of 1088 bytes in function 'rxkad_verify_packet' [-Werror,-Wframe-larger-than=] The problem is the combination of SYNC_SKCIPHER_REQUEST_ON_STACK() in rxkad_verify_packet()/rxkad_secure_packet() with the relatively large scatterlist in rxkad_verify_packet_1()/rxkad_secure_packet_encrypt(). The warning does not show up when using gcc, which does not inline the functions as aggressively, but the problem is still the same. Allocate the cipher buffers from the slab instead, caching the allocated packet crypto request memory used for DATA packet crypto in the rxrpc_call struct. Fixes: 17926a79 ("[AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both") Reported-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
David Howells <dhowells@redhat.com> Acked-by:
-
- 29 Jul, 2019 2 commits
-
-
Vlad Buslov authored
TC flow table is created when first flow is added, and destroyed when last flow is removed. This assumes that all accesses to the table are externally synchronized with rtnl lock. To remove dependency on rtnl lock, add new mutex mlx5e_tc_table->t_lock and use it to protect the flow table. Signed-off-by:
Vlad Buslov <vladbu@mellanox.com> Reviewed-by:
Jianbo Liu <jianbol@mellanox.com> Reviewed-by:
Roi Dayan <roid@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com>
-
Vlad Buslov authored
Function netdev_master_upper_dev_get() generates warning if caller doesn't hold rtnl lock. Modify rules update path to use rcu version of that function. Signed-off-by:
-
