- 04 May, 2020 7 commits
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Edwin Peer authored
The ethtool ABI specifies that the reset operation should only clear the flags that were actually reset. Setting the flags to zero after a chip reset violates this because it does not include resetting the application processor complex. Similarly, components that are not yet defined are also not necessarily being reset. The fact that chip reset does not cover the AP also means that it is inappropriate to treat these two components exclusively of one another. The ABI provides a mechanism to report a failure to reset independent components via the returned bitmask, so it is also wrong to fail hard if one of a set of independent resets is not possible. It is incorrect to rely on the passed by reference flags in bnxt_reset(), which are being updated as components are reset. The initially requested value should be used instead so that hard errors do not propagate if any earlier components could have been reset successfully. Note, AP and chip resets are global in nature. Dedicated resets are thus not currently supported. Signed-off-by:
Edwin Peer <edwin.peer@broadcom.com> Signed-off-by:
Michael Chan <michael.chan@broadcom.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Edwin Peer authored
The case statement in bnxt_firmware_reset() dangerously mixes types. This patch separates the application processor and whole chip resets from the rest such that the selection is performed on a pure type. Signed-off-by:
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Edwin Peer authored
Extract bnxt_hwrm_firmware_reset() for performing firmware reset operations. This new helper function will be used in a subsequent patch to separate unrelated reset types out of bnxt_firmware_reset(). Signed-off-by:
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Vasundhara Volam authored
The firmware does not expect the CRC to be included in the length passed from the driver. The firmware always configures the chip to strip out the CRC. Signed-off-by:
Vasundhara Volam <vasundhara-v.volam@broadcom.com> Signed-off-by:
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Michael Chan authored
The current formulas to calculate the TQM slow path and fast path ring context memory sizes are not quite correct. TQM slow path entry is array index 0 of ctx->tqm_mem[]. The other array entries are for fast path. Fix these sizes according to latest firmware spec. for 57500 and newer chips. Fixes: 3be8136c ("bnxt_en: Initialize context memory to the value specified by firmware.") Signed-off-by:
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Michael Chan authored
Newer firmware spec. will specify the number of TQM rings to allocate context memory for. Use the firmware specified value and fall back to the old value derived from bp->max_q if it is not available. Signed-off-by:
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Michael Chan authored
Changes include additional statistics, ECN support, context memory interface change for better TQM context memory sizing, firmware health status definitions, etc. Signed-off-by:
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- 03 May, 2020 31 commits
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David S. Miller authored
Karsten Graul says: ==================== net/smc: add and delete link processing These patches add the 'add link' and 'delete link' processing as SMC server and client. This processing allows to establish and remove links of a link group dynamically. v2: Fix mess up with unused static functions. Merge patch 8 into patch 4. Postpone patch 13 to next series. ==================== Signed-off-by: -
Karsten Graul authored
As SMC server, when a second link was deleted, trigger the setup of an asymmetric link. Do this by enqueueing a local ADD_LINK message which is processed by the LLC layer as if it were received from peer. Do the same when a new IB port became active and a new link could be created. smc_llc_srv_add_link_local() enqueues a local ADD_LINK message. And smc_llc_srv_delete_link_local() is used the same way to enqueue a local DELETE_LINK message. This is used when an IB port is no longer active. Signed-off-by:
Karsten Graul <kgraul@linux.ibm.com> Reviewed-by:
Ursula Braun <ubraun@linux.ibm.com> Signed-off-by:
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Karsten Graul authored
Add smc_llc_process_srv_delete_link() to process a DELETE_LINK request as SMC server. When the request is to delete ALL links then terminate the whole link group. If not, find the link to delete by its link_id, send the DELETE_LINK request LLC message and wait for the response. No matter if a response was received, clear the deleted link and update the link group state. Signed-off-by:
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Karsten Graul authored
Add smc_llc_process_cli_delete_link() to process a DELETE_LINK request as SMC client. When the request is to delete ALL links then terminate the whole link group. If not, find the link to delete by its link_id, send the DELETE_LINK response LLC message and then clear the deleted link. Finally determine and update the link group state. Signed-off-by:
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Karsten Graul authored
Introduce a work that is scheduled when a new DELETE_LINK LLC request is received. The work will call either the SMC client or SMC server DELETE_LINK processing. And use the LLC flow framework to process incoming DELETE_LINK LLC messages, scheduling the llc_del_link_work for those events. With these changes smc_lgr_forget() is only called by one function and can be migrated into smc_lgr_cleanup_early(). Signed-off-by:
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Karsten Graul authored
When a link group moved from asymmetric to symmetric state then the dangling asymmetric link can be deleted. Add smc_llc_find_asym_link() to find the respective link and add smc_llc_delete_asym_link() to delete it. Signed-off-by:
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Karsten Graul authored
This patch finalizes the ADD_LINK processing of new links. Send the CONFIRM_LINK request to the peer, receive the response and set link state to ACTIVE. Signed-off-by:
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Karsten Graul authored
Part of SMC server new link establishment is the exchange of rkeys for used buffers. Loop over all used RMB buffers and send ADD_LINK_CONTINUE LLC messages to the peer. Signed-off-by:
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Karsten Graul authored
First set of functions to process an ADD_LINK LLC request as an SMC server. Find an alternate IB device, determine the new link group type and get the index for the new link. Then initialize the link and send the ADD_LINK LLC message to the peer. Save the contents of the response, ready the link, map all used buffers and register the buffers with the IB device. If any error occurs, stop the processing and clear the link. And call smc_llc_srv_add_link() in af_smc.c to start second link establishment after the initial link of a link group was created. Signed-off-by:
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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:
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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 2 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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