- 19 Feb, 2020 21 commits
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Heiner Kallweit authored
Several network drivers for chips that support TSO6 share the same code for preparing the TCP header, so let's factor it out to a helper. A difference is that some drivers reset the payload_len whilst others don't do this. This value is overwritten by TSO anyway, therefore the new helper resets it in general. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by:
Alexander Duyck <alexander.h.duyck@linux.intel.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Christian Brauner authored
It is currenty possible to switch the TCP congestion control algorithm in non-initial network namespaces: unshare -U --map-root --net --fork --pid --mount-proc echo "reno" > /proc/sys/net/ipv4/tcp_congestion_control works just fine. But currently non-initial network namespaces have no way of kowing which congestion algorithms are available or allowed other than through trial and error by writing the names of the algorithms into the aforementioned file. Since we already allow changing the congestion algorithm in non-initial network namespaces by exposing the tcp_congestion_control file there is no reason to not also expose the tcp_{allowed,available}_congestion_control files to non-initial network namespaces. After this change a container with a separate network namespace will show: root@f1:~# ls -al /proc/sys/net/ipv4/tcp_* | grep congestion -rw-r--r-- 1 root root 0 Feb 19 11:54 /proc/sys/net/ipv4/tcp_allowed_congestion_control -r--r--r-- 1 root root 0 Feb 19 11:54 /proc/sys/net/ipv4/tcp_available_congestion_control -rw-r--r-- 1 root root 0 Feb 19 11:54 /proc/sys/net/ipv4/tcp_congestion_control Link: https://github.com/lxc/lxc/issues/3267Reported-by:Haw Loeung <haw.loeung@canonical.com> Signed-off-by:
Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by:
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Lorenzo Bianconi authored
Introduce "rx" prefix in the name scheme for xdp counters on rx path. Differentiate between XDP_TX and ndo_xdp_xmit counters Signed-off-by:
Lorenzo Bianconi <lorenzo@kernel.org> Acked-by:
Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by:
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David S. Miller authored
Sunil Goutham says: ==================== octeontx2-af: Cleanup changes These patches cleanup AF driver by removing unnecessary function exports and cleanup repititive logic. ==================== Signed-off-by: -
Sunil Goutham authored
Cleanedup repititive nixlf and blkaddr retrieving logic is various mailbox handlers throughout the rvu_nix.c file. Signed-off-by:
Sunil Goutham <sgoutham@marvell.com> Signed-off-by:
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Sunil Goutham authored
Most of the CGX register config is restricted to mapped RVU PFs, this patch cleans up these permission checks spread across the rvu_cgx.c file by moving the checks to a common fn(). Signed-off-by:
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Sunil Goutham authored
Since CGX driver and AF driver are built into a single module the export symbols in CGX driver are not needed. This patch gets rid of them. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: ==================== This series adds two moderate updates and some misc small patches to mlx5 driver. 1) From Aya, Add the missing devlink health dump callbacks support for both rx and tx health reporters. First patch of the series is extending devlink API to set binary fmsg data. All others patches in the series are adding the mlx5 devlink health callbacks support and the needed FW commands. 2) Also from Aya, Support for FEC modes based on 50G per lane links. Part of this series, Aya adds one missing link mode define "FEC_LLRS" to include/uapi/linux/ethtool.h. 3) From Joe, Use proper logging and tracing line terminations 4) From Christophe, Remove a useless 'drain_workqueue()' ==================== Signed-off-by: -
Christophe JAILLET authored
'destroy_workqueue()' already calls 'drain_workqueue()', there is no need to call it explicitly. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com>
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Aya Levin authored
Introduce new FEC modes: - RS-FEC-(544,514) - LL_RS-FEC-(272,257+1) Add support in ethtool for set and get callbacks for the new modes above. While RS-FEC-(544,514) is mapped to exsiting RS FEC mode, LL_RS-FEC-(272,257+1) is mapped to a new ethtool link mode: LL-RS. Add support for FEC on 50G per lane link modes up to 400G. The new link modes uses a u16 fields instead of u8 fields for the legacy link modes. Signed-off-by:
Aya Levin <ayal@mellanox.com> Signed-off-by:
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Aya Levin authored
Add support for low latency Reed Solomon FEC as LLRS. The LL-FEC is defined by the 25G/50G ethernet consortium, in the document titled "Low Latency Reed Solomon Forward Error Correction" Signed-off-by:
Eran Ben Elisha <eranbe@mellanox.com> CC: Andrew Lunn <andrew@lunn.ch> Signed-off-by:
Andrew Lunn <andrew@lunn.ch>
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Aya Levin authored
FEC mode is per link type, not necessary per speed. This patch access FEC register by link modes instead of speeds. This patch will allow further enhacment of link modes supporting FEC with the same speed (different lane type). Signed-off-by:
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Aya Levin authored
Ethtool advertise supported link modes on an interface. Per each FEC mode, query if there is a link type which supports it. If so, add this FEC mode to the supported FEC modes list. Prior to this patch, ethtool advertised only the supported FEC modes on the current link type. Add an explicit mapping between internal FEC modes and ethtool link mode bits. With this change, adding new FEC modes in the downstream patch would be easier. Signed-off-by:
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Aya Levin authored
Ethtool command allow setting of several FEC modes in a single set command. The driver can only set a single FEC mode at a time. With this patch driver will reply not-supported on setting several FEC modes. Signed-off-by:
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Aya Levin authored
When configuring FEC mode, driver tries to set it for all available link types. If a link type doesn't support a FEC mode, set this link type to auto (FW best effort). Prior to this patch, when a link type didn't support a FEC mode is was set to no FEC. Signed-off-by:
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Joe Perches authored
netdev_err should use newline termination but mlx5_health_report is used in a trace output function devlink_health_report where no newline should be used. Remove the newlines from a couple formats and add a format string of "%s\n" to the netdev_err call to not directly output the logging string. Also use snprintf to avoid any possible output string overrun. Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Aya Levin authored
Add support for SQ's FW dump on RX reporter's events. Use Resource dump API to retrieve the relevant data: RX slice, RQ dump, RX buffer and ICOSQ dump (depends on the error). Wrap it in formatted messages and store the binary output in devlink core. Example: $ devlink health dump show pci/0000:00:0b.0 reporter rx RX Slice: data: 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de RQs: RQ: rqn: 1512 data: 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de RQ: rqn: 1517 data: 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de $ devlink health dump show pci/0000:00:0b.0 reporter rx -jp { "RX Slice": { "data":[ 0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,2,1,0,0,0,0,128,0,1,0,0,0,0,173,222] }, "RQs": [ { "RQ": { "index": 1512, "data": [ 0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,2,1,0,0,0,0,128,0,1,0,0,0,0,173,222] } },{ "RQ": { "index": 1517, "data": [ 0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,2,1,0,0,0,0,128,0,1,0,0,0,0,173] } } ] } Signed-off-by:Moshe Shemesh <moshe@mellanox.com> Acked-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Aya Levin authored
Add support for SQ's FW dump on TX reporter's events. Use Resource dump API to retrieve the relevant data: SX slice, SQ dump and SQ buffer. Wrap it in formatted messages and store the binary output in devlink core. Example: $ devlink health dump show pci/0000:00:0b.0 reporter tx SX Slice: data: 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 02 01 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 20 40 90 81 88 ff ff 00 00 00 00 00 00 00 00 15 00 15 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 81 ae 41 06 00 ea ff ff SQs: SQ: index: 1511 data: 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 02 01 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 20 40 90 81 88 ff ff 00 00 00 00 00 00 00 00 15 00 15 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 81 ae 41 06 00 ea ff ff SQ: index: 1516 data: 00 00 00 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 02 01 00 00 00 00 80 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de 00 20 40 90 81 88 ff ff 00 00 00 00 00 00 00 00 15 00 15 00 00 00 00 00 ff ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 81 ae 41 06 00 ea ff ff $ devlink health dump show pci/0000:00:0b.0 reporter tx -jp { "SX Slice": { "data": [ 0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,2,1,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,32,64,144,129,136,255,255,0,0,0,0,0,0,0,0,21,0,21,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,129,174,65,6,0,234,255,255], }, "SQs": [ { "SQ": { "index": 1511, "data": [ 0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,2,1,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,32,64,144,129,136,255,255,0,0,0,0,0,0,0,0,21,0,21,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,129,174,65,6,0,234,255,255] } },{ "SQ": { "index": 1516, "data": [ 0,0,0,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,2,1,0,0,0,0,128,0,1,0,0,0,0,173,222,34,1,0,0,0,0,173,222,0,32,64,144,129,136,255,255,0,0,0,0,0,0,0,0,21,0,21,0,0,0,0,0,255,255,255,255,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,129,174,65,6,0,234,255,255] } } ] } Signed-off-by: -
Aya Levin authored
Assemble all the API's to ease insertion of dump callbacks in the following patches in the set. Signed-off-by:
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Aya Levin authored
On driver load: - Initialize resource dump data structure and memory access tools (mkey & pd). - Read the resource dump's menu which contains the FW segment identifier. Each record is identified by the segment name (ASCII). During the driver's course of life, users (like reporters) may request dumps per segment. The user should create a command providing the segment identifier (SW enumeration) and command keys. In return, the user receives a command context. In order to receive the dump, the user should supply the command context and a memory (aligned to a PAGE) on which the dump content will be written. Since the dump may be larger than the given memory, the user may resubmit the command until received an indication of end-of-dump. It is the user's responsibility to destroy the command. Signed-off-by:
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Aya Levin authored
Add a new API for start/end binary array brackets [] to force array around binary data as required from JSON. With this restriction, re-open API to set binary fmsg data. Signed-off-by:
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- 18 Feb, 2020 8 commits
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Edward Cree authored
Instead of assigning skb = segments before the loop, just pass segments directly as the first argument to skb_list_walk_safe(). Signed-off-by:
Edward Cree <ecree@solarflare.com> Signed-off-by:
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Fabio Estevam authored
After performing an unbind/bind operation the network is no longer functional on i.MX6 (which has a single FEC instance): # echo 2188000.ethernet > /sys/bus/platform/drivers/fec/unbind # echo 2188000.ethernet > /sys/bus/platform/drivers/fec/bind [ 10.756519] pps pps0: new PPS source ptp0 [ 10.792626] libphy: fec_enet_mii_bus: probed [ 10.799330] fec 2188000.ethernet eth0: registered PHC device 1 # udhcpc -i eth0 udhcpc: started, v1.31.1 [ 14.985211] fec 2188000.ethernet eth0: no PHY, assuming direct connection to switch [ 14.993140] libphy: PHY fixed-0:00 not found [ 14.997643] fec 2188000.ethernet eth0: could not attach to PHY On SoCs with two FEC instances there are some cases where one FEC instance depends on the other one being present. One such example is i.MX28, which has the following FEC dependency as noted in the comments: /* * The i.MX28 dual fec interfaces are not equal. * Here are the differences: * * - fec0 supports MII & RMII modes while fec1 only supports RMII * - fec0 acts as the 1588 time master while fec1 is slave * - external phys can only be configured by fec0 * * That is to say fec1 can not work independently. It only works * when fec0 is working. The reason behind this design is that the * second interface is added primarily for Switch mode. * * Because of the last point above, both phys are attached on fec0 * mdio interface in board design, and need to be configured by * fec0 mii_bus. */ Prevent the unbind operation to avoid these issues. Signed-off-by:
Fabio Estevam <festevam@gmail.com> Signed-off-by:
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YueHaibing authored
drivers/net/ethernet/amazon/ena/ena_com.c: In function ena_com_hash_key_allocate: drivers/net/ethernet/amazon/ena/ena_com.c:1070:50: warning: variable hash_key set but not used [-Wunused-but-set-variable] commit 6a4f7dc8 ("net: ena: rss: do not allocate key when not supported") introduced this, but not used, so remove it. Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Signed-off-by:
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by:Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by:
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by:
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- 17 Feb, 2020 11 commits
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Russell King authored
Now that the phylib module loading issue has been resolved, we can allow this PHY driver to be built as a module. Signed-off-by:
Russell King <rmk+kernel@armlinux.org.uk> Acked-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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David S. Miller authored
Ursula Braun says: ==================== net/smc: patches 2020-02-17 here are patches for SMC making termination tasks more perfect. ==================== Signed-off-by: -
Ursula Braun authored
IB event handlers schedule the port event worker for further processing of port state changes. This patch reduces the number of schedules to avoid duplicate processing of the same port change. Reviewed-by:
Karsten Graul <kgraul@linux.ibm.com> Signed-off-by:
Ursula Braun <ubraun@linux.ibm.com> Signed-off-by:
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Karsten Graul authored
smc_lgr_terminate() and smc_lgr_terminate_sched() both result in soft link termination, smc_lgr_terminate_sched() is scheduling a worker for this task. Take out complexity by always using the termination worker and getting rid of smc_lgr_terminate() completely. Signed-off-by:
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Karsten Graul authored
The soft parameter of smc_lgr_terminate() is not used and obsolete. Remove it. Signed-off-by:
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Karsten Graul authored
When 2 callers call smc_lgr_terminate() at the same time for the same lgr, one gets the lgr_lock and deletes the lgr from the list and releases the lock. Then the second caller gets the lock and tries to delete it again. In smc_lgr_terminate() add a check if the link group lgr is already deleted from the link group list and prevent to try to delete it a second time. And add a check if the lgr is marked as freeing, which means that a termination is already pending. Signed-off-by:
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Karsten Graul authored
smc_tx_rdma_write() is called under the send_lock and should not call smc_lgr_terminate() directly. Call smc_lgr_terminate_sched() instead which schedules a worker. Signed-off-by:
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Karsten Graul authored
smc_lgr_cleanup() is called during termination processing, there is no need to send a DELETE_LINK at that time. A DELETE_LINK should have been sent before the termination is initiated, if needed. And remove the extra call to wake_up(&lnk->wr_reg_wait) because smc_llc_link_inactive() already calls the related helper function smc_wr_wakeup_reg_wait(). Signed-off-by:
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David S. Miller authored
Ido Schimmel says: ==================== mlxsw: Reduce dependency between bridge and router code This patch set reduces the dependency between the bridge and the router code in preparation for RTNL removal from the route insertion path in mlxsw. The motivation and solution are explained in detail in patch #3. The main idea is that we need to stop special-casing the VXLAN devices with regards to the reference counting of the FIDs. Otherwise, we can bump into the situation described in patch #3, where the routing code calls into the bridge code which calls back into the routing code. After adding a mutex to protect router data structures to remove RTNL dependency, this can result in an AA deadlock. Patches #1 and #2 are preparations. They convert the FIDs to use 'refcount_t' for reference counting in order to catch over/under flows and add extack to the bridge creation function. Patches #3-#5 reduce the dependency between the bridge and the router code. First, by having the VXLAN device take a reference on the FID in patch #3 and then by removing unnecessary code following the change in patch #3. Patches #6-#10 adjust existing selftests and add new ones to exercise the new code paths. ==================== Signed-off-by: -
Ido Schimmel authored
Test that when two VXLAN tunnels with conflicting configurations (i.e., different TTL) are enslaved to the same VLAN-aware bridge, then the enslavement of a port to the bridge is denied. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Acked-by:
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Ido Schimmel authored
After recent changes, the VXLAN tunnel will be offloaded regardless if any local ports are member in the FID or not. Adjust the test to make sure the tunnel is offloaded in this case. Signed-off-by:
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