- 03 May, 2020 22 commits
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Karsten Graul authored
This patch finalizes the ADD_LINK processing of new links. Receive the CONFIRM_LINK request from peer, complete the link initialization, register all used buffers with the IB device and finally send the CONFIRM_LINK response, which completes the ADD_LINK processing. And activate smc_llc_cli_add_link() in af_smc.c. Signed-off-by:
Karsten Graul <kgraul@linux.ibm.com> Reviewed-by:
Ursula Braun <ubraun@linux.ibm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Karsten Graul authored
Part of the SMC client new link establishment process is the exchange of rkeys for all used buffers. Add new LLC message type ADD_LINK_CONTINUE which is used to exchange rkeys of all current RMB buffers. Add functions to iterate over all used RMB buffers of the link group, and implement the ADD_LINK_CONTINUE processing. Signed-off-by:
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Karsten Graul authored
First set of functions to process an ADD_LINK LLC request as an SMC client. Find an alternate IB device, determine the new link group type and get the index for the new link. Then ready the link, map the buffers and send an ADD_LINK LLC response. If any error occurs, send a reject LLC message and terminate the processing. Add smc_llc_alloc_alt_link() to find a free link index for a new link, depending on the new link group type. Signed-off-by:
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David S. Miller authored
Sameeh Jubran says: ==================== Enhance current features in ena driver Difference from v2: * dropped patch "net: ena: move llq configuration from ena_probe to ena_device_init()" * reworked patch ""net: ena: implement ena_com_get_admin_polling_mode() to drop the prototype Difference from v1: * reodered paches #01 and #02. * dropped adding Rx/Tx drops to ethtool in patch #08 V1: This patchset introduces the following: * minor changes to RSS feature * add total rx and tx drop counter * add unmask_interrupt counter for ethtool statistics * add missing implementation for ena_com_get_admin_polling_mode() * some minor code clean-up and cosmetics * use SHUTDOWN as reset reason when closing interface ==================== Signed-off-by: -
Arthur Kiyanovski authored
Extract code to ena_indirection_table_set() to make the code cleaner. Signed-off-by:
Sameeh Jubran <sameehj@amazon.com> Signed-off-by:
Arthur Kiyanovski <akiyano@amazon.com> Signed-off-by:
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Sameeh Jubran authored
The macros in ena_com.h have inconsistent spaces between the macro name and it's value. This commit sets all the macros to have a single space between the name and value. Signed-off-by:
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Sameeh Jubran authored
The 'ENA_REGS_RESET_SHUTDOWN' enum indicates a normal driver shutdown / removal procedure. Also, a comment is added to one of the reset reason assignments for code clarity. Signed-off-by:
Shay Agroskin <shayagr@amazon.com> Signed-off-by:
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Arthur Kiyanovski authored
Before this commit there was a function prototype named ena_com_get_ena_admin_polling_mode() that was never implemented. This patch simply deletes it. Signed-off-by:
Igor Chauskin <igorch@amazon.com> Signed-off-by:
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Sameeh Jubran authored
1. Add support for getting tx drops from the device and saving them in the driver. 2. Report tx via netdev stats. Signed-off-by:
Guy Tzalik <gtzalik@amazon.com> Signed-off-by:
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Sameeh Jubran authored
Add unmask interrupts statistics to ethtool. Signed-off-by:
Netanel Belgazal <netanel@amazon.com> Signed-off-by:
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Sameeh Jubran authored
Both key and func parameters are pointers on the stack. Setting them to NULL does nothing. The original intent was to leave the key and func unset in this case, but for this to happen nothing needs to be done as the calling function ethtool_get_rxfh() already clears key and func. This commit removes the above described useless code. Signed-off-by:
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Sameeh Jubran authored
This commit contains 2 cosmetic changes: 1. Use ena_com_check_supported_feature_id() in ena_com_hash_key_fill_default_key() instead of rewriting its implementation. This also saves us a superfluous admin command by using the cached value. 2. Change if conditions in ena_com_rss_init() to be clearer. Signed-off-by:
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Arthur Kiyanovski authored
Currently in the driver we are setting the hash function to be CRC32. Starting with this commit we want to change the default behaviour so that we set the hash function to be Toeplitz instead. Signed-off-by:
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Sameeh Jubran authored
Current code does not allow setting the hash function without changing the key. This commit enables it. To achieve this we separate ena_com_get_hash_function() to 2 functions: ena_com_get_hash_function() - which gets only the hash function, and ena_com_get_hash_key() - which gets only the hash key. Also return 0 instead of rc at the end of ena_get_rxfh() since all previous operations succeeded. Signed-off-by:
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Arthur Kiyanovski authored
In case the "func" parameter is NULL we now return "-EINVAL". This shouldn't happen in general, but when it does happen, this is the proper way to handle it. We also check func for NULL in the beginning of the function, as there is no reason to do all the work and realize in the end of the function it was useless. Signed-off-by:
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Arthur Kiyanovski authored
Currently when ena_set_hash_function() fails the hash function is restored to the previous value by calling an admin command to get the hash function from the device. In this commit we avoid the admin command, by saving the previous hash function before calling ena_set_hash_function() and using this previous value to restore the hash function in case of failure of ena_set_hash_function(). Signed-off-by:
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David S. Miller authored
Eric Dumazet says: ==================== net_sched: sch_fq: round of optimizations This series is focused on better layout of struct fq_flow to reduce number of cache line misses in fq_enqueue() and dequeue operations. ==================== Signed-off-by: -
Eric Dumazet authored
The prefetch() done in fq_dequeue() can be done a bit earlier after the refactoring of the code done in the prior patch. Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Eric Dumazet authored
This refactors the code to not call fq_peek() from fq_dequeue_head() since the caller can provide the skb. Also rename fq_dequeue_head() to fq_dequeue_skb() because 'head' is a bit vague, given the skb could come from t_root rb-tree. Signed-off-by:
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Eric Dumazet authored
fq_gc() already builds a small array of pointers, so using kmem_cache_free_bulk() needs very little change. Signed-off-by:
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Eric Dumazet authored
sizeof(struct fq_flow) is 112 bytes on 64bit arches. This means that half of them use two cache lines, but 50% use three cache lines. This patch adds cache line alignment, and makes sure that only the first cache line is touched by fq_enqueue(), which is more expensive that fq_dequeue() in general. Signed-off-by:
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Eric Dumazet authored
A significant amount of cpu cycles is spent in fq_gc() When fq_gc() does its lookup in the rb-tree, it needs the following fields from struct fq_flow : f->sk (lookup key in the rb-tree) f->fq_node (anchor in the rb-tree) f->next (used to determine if the flow is detached) f->age (used to determine if the flow is candidate for gc) This unfortunately spans two cache lines (assuming 64 bytes cache lines) We can avoid using f->next, if we use the low order bit of f->{age|tail} This low order bit is 0, if f->tail points to an sk_buff. We set the low order bit to 1, if the union contains a jiffies value. Combined with the following patch, this makes sure we only need to bring into cpu caches one cache line per flow. Signed-off-by:
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- 02 May, 2020 9 commits
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Dmitry Yakunin authored
Fix bug introduced by commit b1f3e43d ("inet_diag: add support for cgroup filter"). Signed-off-by:
Dmitry Yakunin <zeil@yandex-team.ru> Reported-by: syzbot+ee80f840d9bf6893223b@syzkaller.appspotmail.com Reported-by: syzbot+13bef047dbfffa5cd1af@syzkaller.appspotmail.com Fixes: b1f3e43d ("inet_diag: add support for cgroup filter") Signed-off-by:
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Andrew Lunn authored
Measurements of the MDIO bus have shown that driving the MDIO bus using interrupts is slow. Back to back MDIO transactions take about 90us, with 25us spent performing the transaction, and the remainder of the time the bus is idle. Replacing the completion interrupt with polled IO results in back to back transactions of 40us. The polling loop waiting for the hardware to complete the transaction takes around 28us. Which suggests interrupt handling has an overhead of 50us, and polled IO nearly halves this overhead, and doubles the MDIO performance. Care has to be taken when setting the MII_SPEED register, or it can trigger an MII event> That then upsets the polling, due to an unexpected pending event. Suggested-by:
Chris Heally <cphealy@gmail.com> Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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David S. Miller authored
net/smc/smc_llc.c:544:12: warning: ‘smc_llc_alloc_alt_link’ defined but not used [-Wunused-function] static int smc_llc_alloc_alt_link(struct smc_link_group *lgr, ^~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: -
David S. Miller authored
Vincent Cheng says: ==================== ptp: Add adjust phase to support phase offset. This series adds adjust phase to the PTP Hardware Clock device interface. Some PTP hardware clocks have a write phase mode that has a built-in hardware filtering capability. The write phase mode utilizes a phase offset control word instead of a frequency offset control word. Add adjust phase function to take advantage of this capability. Changes since v1: - As suggested by Richard Cochran: 1. ops->adjphase is new so need to check for non-null function pointer. 2. Kernel coding style uses lower_case_underscores. 3. Use existing PTP clock API for delayed worker. ==================== Signed-off-by: -
Vincent Cheng authored
Add idtcm_adjphase() to support PHC write phase mode. Signed-off-by:
Vincent Cheng <vincent.cheng.xh@renesas.com> Acked-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
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Vincent Cheng authored
Add adjust_phase to ptp_clock_caps capability to allow user to query if a PHC driver supports adjust phase with ioctl PTP_CLOCK_GETCAPS command. Signed-off-by:
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Vincent Cheng authored
Adds adjust phase function to take advantage of a PHC clock's hardware filtering capability that uses phase offset control word instead of frequency offset control word. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller authored
Alexei Starovoitov says: ==================== pull-request: bpf-next 2020-05-01 (v2) The following pull-request contains BPF updates for your *net-next* tree. We've added 61 non-merge commits during the last 6 day(s) which contain a total of 153 files changed, 6739 insertions(+), 3367 deletions(-). The main changes are: 1) pulled work.sysctl from vfs tree with sysctl bpf changes. 2) bpf_link observability, from Andrii. 3) BTF-defined map in map, from Andrii. 4) asan fixes for selftests, from Andrii. 5) Allow bpf_map_lookup_elem for SOCKMAP and SOCKHASH, from Jakub. 6) production cloudflare classifier as a selftes, from Lorenz. 7) bpf_ktime_get_*_ns() helper improvements, from Maciej. 8) unprivileged bpftool feature probe, from Quentin. 9) BPF_ENABLE_STATS command, from Song. 10) enable bpf_[gs]etsockopt() helpers for sock_ops progs, from Stanislav. 11) enable a bunch of common helpers for cg-device, sysctl, sockopt progs, from Stanislav. ==================== Signed-off-by: -
David S. Miller authored
Karsten Graul says: ==================== net/smc: extent buffer mapping and port handling Add functionality to map/unmap and register/unregister memory buffers for specific SMC-R links and for the whole link group. Prepare LLC layer messages for the support of multiple links and extent the processing of adapter events. And add further small preparations needed for the SMC-R failover support. ==================== Signed-off-by:
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- 01 May, 2020 9 commits
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Stanislav Fomichev authored
Andrey pointed out that we can use reno instead of dctcp for CC tests and drop CONFIG_TCP_CONG_DCTCP=y requirement. Fixes: beecf11b ("bpf: Bpf_{g,s}etsockopt for struct bpf_sock_addr") Suggested-by:
Andrey Ignatov <rdna@fb.com> Signed-off-by:
Stanislav Fomichev <sdf@google.com> Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Acked-by:
Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20200501224320.28441-1-sdf@google.com
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Karsten Graul authored
Introduce a work that is scheduled when a new ADD_LINK LLC request is received. The work will call either the SMC client or SMC server ADD_LINK processing. Signed-off-by:
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Karsten Graul authored
Add smc_llc_alloc_alt_link() to find a free link index for a new link, depending on the new link group type. And update constants for the maximum number of links to 3 (2 symmetric and 1 dangling asymmetric link). These maximum numbers are the same as used by other implementations of the SMC-R protocol. Signed-off-by:
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Karsten Graul authored
Introduce a new function in smc_pnet.c that searches for an alternate IB device, using an existing link group and a primary IB device. The alternate IB device needs to be active and must have the same PNETID as the link group. Signed-off-by:
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Karsten Graul authored
Support for multiple links makes the former DELETE LINK processing obsolete which sent one DELETE_LINK LLC message for each single link. Remove this processing from smc_core.c. Signed-off-by:
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Karsten Graul authored
Use the introduced link down processing in all places where the link group is terminated and take down the affected link only. Signed-off-by:
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Karsten Graul authored
Call smcr_port_err() when an IB event reports an inactive IB device. smcr_port_err() calls smcr_link_down() for all affected links. smcr_link_down() either triggers the local DELETE_LINK processing, or sends an DELETE_LINK LLC message to the SMC server to initiate the processing. The old handler function smc_port_terminate() is removed. Add helper smcr_link_down_cond() to take a link down conditionally, and smcr_link_down_cond_sched() to schedule the link_down processing to a work. Signed-off-by:
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Karsten Graul authored
Call smcr_port_add() when an IB event reports a new active IB device. smcr_port_add() will start a work which either triggers the local ADD_LINK processing, or send an ADD_LINK LLC message to the SMC server to initiate the processing. Signed-off-by:
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Karsten Graul authored
The PNETID is needed to find an alternate link for a link group. Save the PNETID of the link that is used to create the link group for later device matching. Signed-off-by:
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