- 22 Sep, 2018 6 commits
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Nathan Chancellor authored
Clang warns when a variable is assigned to itself. drivers/net/usb/lan78xx.c:940:11: warning: explicitly assigning value of variable of type 'u32' (aka 'unsigned int') to itself [-Wself-assign] offset = offset; ~~~~~~ ^ ~~~~~~ 1 warning generated. Reorder the if statement to acheive the same result and avoid a self assignment warning. Link: https://github.com/ClangBuiltLinux/linux/issues/129Signed-off-by:Nathan Chancellor <natechancellor@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Nathan Chancellor authored
Clang warns when a variable is assigned to itself. drivers/net/fddi/skfp/pcmplc.c:1257:6: warning: explicitly assigning value of variable of type 'int' to itself [-Wself-assign] phy = phy ; on_off = on_off ; ~~~ ^ ~~~ drivers/net/fddi/skfp/pcmplc.c:1257:21: warning: explicitly assigning value of variable of type 'int' to itself [-Wself-assign] phy = phy ; on_off = on_off ; ~~~~~~ ^ ~~~~~~ 2 warnings generated. Turns out this entire function doesn't actually do anything since SK_UNUSED is just casting the pointer to void. Remove it to silence this Clang warning. Link: https://github.com/ClangBuiltLinux/linux/issues/128Signed-off-by: -
Nathan Chancellor authored
Clang warns when a variable is assigned to itself. drivers/net/ethernet/brocade/bna/bna_enet.c:1800:9: warning: explicitly assigning value of variable of type 'int' to itself [-Wself-assign] for (i = i; i < (bna->ioceth.attr.num_ucmac * 2); i++) ~ ^ ~ drivers/net/ethernet/brocade/bna/bna_enet.c:1835:9: warning: explicitly assigning value of variable of type 'int' to itself [-Wself-assign] for (i = i; i < (bna->ioceth.attr.num_mcmac * 2); i++) ~ ^ ~ 2 warnings generated. Link: https://github.com/ClangBuiltLinux/linux/issues/110Signed-off-by: -
Nathan Chancellor authored
Clang warns when multiple pairs of parentheses are used for a single conditional statement. drivers/net/ethernet/neterion/vxge/vxge-traffic.c:2265:31: warning: equality comparison with extraneous parentheses [-Wparentheses-equality] if ((hldev->config.intr_mode == VXGE_HW_INTR_MODE_MSIX_ONE_SHOT)) ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/vxge/vxge-traffic.c:2265:31: note: remove extraneous parentheses around the comparison to silence this warning if ((hldev->config.intr_mode == VXGE_HW_INTR_MODE_MSIX_ONE_SHOT)) ~ ^ ~ drivers/net/ethernet/neterion/vxge/vxge-traffic.c:2265:31: note: use '=' to turn this equality comparison into an assignment if ((hldev->config.intr_mode == VXGE_HW_INTR_MODE_MSIX_ONE_SHOT)) ^~ = 1 warning generated. Link: https://github.com/ClangBuiltLinux/linux/issues/124Signed-off-by: -
Heiner Kallweit authored
When being in state PHY_HALTED we don't have to reschedule the state machine, phy_start() will start it again. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
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Romain Aviolat authored
This patch fixes a couple of issues highlighted by checkpatch.pl: * Missing a blank line after declarations * Alignment should match open parenthesis Signed-off-by:Romain Aviolat <r.aviolat@gmail.com> Signed-off-by:
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- 21 Sep, 2018 20 commits
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David S. Miller authored
Shahed Shaikh says: ==================== bnx2x: enhancements This series adds below changes - - support for VF spoof-check configuration through .ndo_set_vf_spoofchk. - workaround for MFW bug regarding unexpected bandwidth notifcation in single function mode. - supply VF link status as part of get VF config handling. ==================== Signed-off-by:
Shahed Shaikh <shahed.shaikh@cavium.com> Signed-off-by:
Ariel Elior <ariel.elior@cavium.com>
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Shahed Shaikh authored
Provide current link status of VF in ndo_get_vf_config handler. Signed-off-by:
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Shahed Shaikh authored
This is a workaround for FW bug - MFW generates bandwidth attention in single function mode, which is only expected to be generated in multi function mode. This undesired attention in SF mode results in incorrect HW configuration and resulting into Tx timeout. Signed-off-by:
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Shahed Shaikh authored
Add support for `ndo_set_vf_spoofchk' to allow PF control over its VF spoof-checking configuration. Signed-off-by:
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zhong jiang authored
kfree_skb has taken the null pointer into account. hence it is safe to remove the redundant null pointer check before kfree_skb. Signed-off-by:
zhong jiang <zhongjiang@huawei.com> Signed-off-by:
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Dan Carpenter authored
We accidentally left out this error return so it leads to some use after free bugs later on. Fixes: 0a0be13b ("vhost_net: batch submitting XDP buffers to underlayer sockets") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Michael S. Tsirkin <mst@redhat.com> Acked-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
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David S. Miller authored
zhong jiang says: ==================== net: remove redundant null pointer check before kfree_skb The issue is detected with the help of Coccinelle. ==================== Signed-off-by: -
zhong jiang authored
kfree_skb has taken the null pointer into account. hence it is safe to remove the redundant null pointer check before kfree_skb. Signed-off-by:
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zhong jiang authored
kfree_skb has taken the null pointer into account. hence it is safe to remove the redundant null pointer check before kfree_skb. Signed-off-by:
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zhong jiang authored
kfree_skb has taken the null pointer into account. hence it is safe to remove the redundant null pointer check before kfree_skb. Signed-off-by:
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zhong jiang authored
kfree_skb has taken the null pointer into account. hence it is safe to remove the redundant null pointer check before kfree_skb. Signed-off-by:
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zhong jiang authored
kfree_skb has taken the null pointer into account. hence it is safe to remove the redundant null pointer check before kfree_skb. Signed-off-by:
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zhong jiang authored
kfree_skb has taken the null pointer into account. hence it is safe to remove the redundant null pointer check before kfree_skb. Signed-off-by:
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zhong jiang authored
The continue will not truely skip any code. hence it is safe to remove it. Signed-off-by:
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zhong jiang authored
The continue will not truely skip any code. hence it is safe to remove it. Signed-off-by:
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Vlad Buslov authored
Action API was changed to work with actions and action_idr in concurrency safe manner, however tcf_del_walker() still uses actions without taking a reference or idrinfo->lock first, and deletes them directly, disregarding possible concurrent delete. Change tcf_del_walker() to take idrinfo->lock while iterating over actions and use new tcf_idr_release_unsafe() to release them while holding the lock. And the blocking function fl_hw_destroy_tmplt() could be called when we put a filter chain, so defer it to a work queue. Signed-off-by:
Vlad Buslov <vladbu@mellanox.com> [xiyou.wangcong@gmail.com: heavily modify the code and changelog] Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
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David S. Miller authored
David Ahern says: ==================== net: wean netfilter from fib_nh Two netfilter modules reference fib_nh. In both cases the code is only checking if a nexthop in a fib_info uses a specific device. Both instances essentially duplicate code from __fib_validate_source, so move that code into a helper and flip the netfilter modules to use it. ==================== Signed-off-by: -
David Ahern authored
Convert nft_fib4_eval to the new device checking helper and remove the duplicate code. Signed-off-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
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David Ahern authored
Convert rpfilter_lookup_reverse to the new device checking helper and remove the duplicate code. Signed-off-by:
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David Ahern authored
Move the device matching check in __fib_validate_source to a helper and export it for use by netfilter modules. Code move only; no functional change intended. Signed-off-by:
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- 20 Sep, 2018 14 commits
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Corentin Labbe authored
The header ocelot_dev_gmii.h is unused since the inclusion of the driver. It is unused, lets just remove it. Signed-off-by:
Corentin Labbe <clabbe@baylibre.com> Signed-off-by:
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David S. Miller authored
Ido Schimmel says: ==================== mlxsw: Further MC-awareness configuration Petr says: Due to an issue in Spectrum chips, when unicast traffic shares the same queue as BUM traffic, and there is congestion, the BUM traffic is admitted to the queue anyway, thus pushing out all UC traffic. In order to give unicast traffic precedence over BUM traffic, multicast-aware mode is now configured on all ports. Under MC-aware mode, egress TCs 8..15 are used for BUM traffic, which has its own dedicated pool. This patch set improves the way that the MC pool and the higher-order TCs are integrated into the system. In patch #1, shaper at the higher TCs is configured to the same value that it has by default. It's better to have the corresponding artifact in the code explicitly. The 8 following patches gradually extend the devlink handling in mlxsw to support the extra TCs and the new MC pool. Patch #2 changes the way that pools are indexed in mlxsw. Instead of using (FW index, direction) tuple to identify the pool and the associated cache, mlxsw now uses devlink index. This change is necessary because the new pool 15 is not contiguously adjacent to the currently-used pools 0..3, and because it's only relevant on egress. Using devlink index relaxes the requirement for symmetry and adjacency imposed by using FW indexing. In patch #3, the assumption that number of ingress TCs matches that of egress TCs is relaxed to allow exposition of egress TCs 8..15. In patches #4, #5 and #6, support for infinite quotas is introduced. Infinite quotas are reported as taking all the memory in the system, but actually use a mechanism where the infinity is configured explicitly. In patches #7 and #8, support for configuring static pool sizes in introduced. Statically-sized pools have been supported for a while now, but during initialization, all pools have dynamic size. The patches allow there to be a mix of by-default static and dynamic pools. In patches #9 and #10, pool 15 resp. per-priority MC quotas are explicitly configured to be in sync with the current recommendation for handling BUM traffic in Spectrum chips. In the following 3 patches, an mlxsw-specific selftest is added to test the MC-awareness configuration. First in patches #11 and #12, lib.sh is extended with functions to collect ethtool stats, and to manage port MTU. Then in patch #13 the selftest itself is added. ==================== Signed-off-by: -
Petr Machata authored
A so-called "MC-aware" mode has recently been enabled in mlxsw. In MC-aware mode, BUM traffic is handled in a special way so that when a switch is flooded with BUM, UC performance isn't unduly impacted. Without enablement of this mode, a stream of BUM traffic can cause sustained UC throughput drop in excess of 99 %. Add a test for this behavior. Compare how much UC throughput degrades as a stream of broadcast frames floods the switch. A minimal degradation is tolerated to cover for glitches in traffic injection performance. Signed-off-by:
Petr Machata <petrm@mellanox.com> Reviewed-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
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Petr Machata authored
Some selftests need to tweak MTU of an interface, and naturally should at teardown restore the MTU back to the original value. Add two functions to facilitate this MTU handling: mtu_set() to change MTU value, and mtu_reset() to change it back to what it was before. Signed-off-by:
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Petr Machata authored
Add a new service function to obtain ethtool counters. Signed-off-by:
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Petr Machata authored
The SBMM register configures shared buffer allocation and settings for MC packets according to switch priority. The recommended values are no reserved buffer and alpha of 1/4, which corresponds to buf_max of 6. Update mlxsw_sp_sb_mms accordingly. Signed-off-by:
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Petr Machata authored
Pool 15 (indexed as 8) is dedicated to MC traffic. Its configuration has been kept at default, because the table-based configuration wasn't expressive enough to allow the explicit configuration. Now that the configuration of pool 15 can be described, do so. The MC pool should have infinite size, infinite per-TC quota, and per-port limit of 90K. Signed-off-by:
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Petr Machata authored
Some pools configured through the sb_pm entries may have by default static size. The MC pool is now not explicitly configured, however it gets configured as static implicitly by 0-initializing sb->prs, and a follow-up patch adds an explicit configuration to the same effect. To support this, pass max_buff taken from sb_pm and sb_cm entries through cell conversion before handing it to mlxsw_sp_sb_pm_write(), if the pool that the sb_pm entry configures is statically-sized. To keep current behavior, update mlxsw_sp_sb_cms_egress[] to denote buffer sizes in bytes (assuming Spectrum 1 cell sizes, which the original code assumed as well) instead of cells. Note that a follow-up patch changes this to infinite size. Also tweak a comment at SBMM configuration to remain true now that statically-sized pools exist. Signed-off-by:
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Petr Machata authored
The SBPM register configures the shared buffer allocation and configuration per port and pool. The min_buff value is the buffer size dedicated to this single function, and is configured in cells. Currently, all sb_pm entries have 0 for min_buff, and therefore the actual unit is immaterial. However, in a follow-up patch we want to add entries with non-zero minimum. Therefore pass the min_buff from the sb_pm table through the cell conversion before handing it over to mlxsw_sp_sb_pm_write(). Signed-off-by:
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Petr Machata authored
The SBCM register configures the shared buffer configuration according to port and TC. So far all pools have had a dynamic size, where the infinite size is easy to express by using max_buff of 0xff. However the MC pool should be configured with static size, and the infinite size thus needs to be set using the field SBCM.infi_max. Therefore add the field infi_max to the SBCM register and to mlxsw_reg_sbcm_pack(). Extend mlxsw_sp_sb_cm_write() to handle infinite sizes as well. Report infinite pool limits as if the limit actually were the total shared buffer size. Signed-off-by:
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Petr Machata authored
The MC pool should have an infinite size (i.e. no quota). To that end, add infi_size to the SBPR register and extend mlxsw_reg_sbpr_pack(). Also add MLXSW_SP_SB_INFI to denote buffers that should have an infinite size. Change mlxsw_sp_sb_pr_write() to take as parameter byte size, instead of cell size, and add the special handling of infinite buffers. Report pools with infinite size as if they actually take the full shared buffer size. Signed-off-by:
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Petr Machata authored
Entities of infinite size will be reported as if they had the maximum size allowed by the chip. To that end, keep track of maximum shared buffer size in mlxsw_sp->sb. Signed-off-by:
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Petr Machata authored
Current code assumes that ingress and egress has the same number of traffic classes. Since the introduction of MC-aware mode that assumption hasn't held anymore, and there have been 16 TCs on the egress as opposed to 8 on ingress. Break the assumption of symmetry by splitting the artifacts related to shared-buffer TC counting to ingress and egress parts. Signed-off-by:
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Petr Machata authored
Currently, mlxsw assumes that each ingress pool has its egress counterpart, and that pool index for purposes of caching matches the index with which the hardware should be configured. As we want to expose the MC pool, both of these assumptions break. Instead, maintain the pool index as long as possible. Unify ingress and egress caches and use the pool index as cache index as well. Only translate to FW pool numbering when actually packing the registers. This simplifies things considerably, as the pool index is the only quantity necessary to uniquely identify a pool, and the pool/direction split is not necessary until firmware is talked to. To support the mapping between pool indices and pool numbers and directions, which is not neatly mathematical anymore, introduce a pool descriptor table, indexed by pool index, to facilitate the translation. Include the MC pool in the descriptor table as well, so that it can be referenced from mlxsw_sp_sb_cms_egress. Signed-off-by:
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