- 27 Apr, 2018 40 commits
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Wei Wang authored
In tcp_select_initial_window(), we only set rcv_wnd to tcp_default_init_rwnd() if current mss > (1 << wscale). Otherwise, rcv_wnd is kept at the full receive space of the socket which is a value way larger than tcp_default_init_rwnd(). With larger initial rcv_wnd value, receive buffer autotuning logic takes longer to kick in and increase the receive buffer. In a TCP throughput test where receiver has rmem[2] set to 125MB (wscale is 11), we see the connection gets recvbuf limited at the beginning of the connection and gets less throughput overall. Signed-off-by:
Wei Wang <weiwan@google.com> Acked-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Soheil Hassas Yeganeh <soheil@google.com> Acked-by:
Yuchung Cheng <ycheng@google.com> Acked-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Ursula Braun says: ==================== smc fixes from 2018-04-17 - v3 in the mean time we challenged the benefit of these CLC handshake optimizations for the sockopts TCP_NODELAY and TCP_CORK. We decided to give up on them for now, since SMC still works properly without. There is now version 3 of the patch series with patches 2-4 implementing sockopts that require special handling in SMC. Version 3 changes * no deferring of setsockopts TCP_NODELAY and TCP_CORK anymore * allow fallback for some sockopts eliminating SMC usage * when setting TCP_NODELAY always enforce data transmission (not only together with corked data) Version 2 changes of Patch 2/4 (and 3/4): * return error -EOPNOTSUPP for TCP_FASTOPEN sockopts * fix a kernel_setsockopt() usage bug by switching parameter variable from type "u8" to "int" * add return code validation when calling kernel_setsockopt() * propagate a setsockopt error on the internal CLC socket to the SMC socket. ==================== Signed-off-by: -
Ursula Braun authored
If sockopt TCP_DEFER_ACCEPT is set, the accept is delayed till data is available. Signed-off-by:
Ursula Braun <ubraun@linux.ibm.com> Signed-off-by:
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Ursula Braun authored
Setting sockopt TCP_NODELAY or resetting sockopt TCP_CORK triggers data transfer. For a corked SMC socket RDMA writes are deferred, if there is still sufficient send buffer space available. Signed-off-by:
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Ursula Braun authored
Several TCP sockopts do not work for SMC. One example are the TCP_FASTOPEN sockopts, since SMC-connection setup is based on the TCP three-way-handshake. If the SMC socket is still in state SMC_INIT, such sockopts trigger fallback to TCP. Otherwise an error is returned. Signed-off-by:
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Karsten Graul authored
The struct smc_cdc_msg must be defined as packed so the size is 44 bytes. And change the structure size check so sizeof is checked. Signed-off-by:
Karsten Graul <kgraul@linux.ibm.com> Signed-off-by:
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Jeff Kirsher authored
After many years of having a ~30 line copyright and license header to our source files, we are finally able to reduce that to one line with the advent of the SPDX identifier. Also caught a few files missing the SPDX license identifier, so fixed them up. Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com> Acked-by:
Shannon Nelson <shannon.nelson@oracle.com> Acked-by:
Richard Cochran <richardcochran@gmail.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
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Kirill Tkhai authored
kbuild test robot says: >coccinelle warnings: (new ones prefixed by >>) >>> net/core/dev.c:1588:2-3: Unneeded semicolon So, let's remove it. Reported-by:
kbuild test robot <lkp@intel.com> Signed-off-by:
Kirill Tkhai <ktkhai@virtuozzo.com> Signed-off-by:
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Tobias Regnery authored
Commit c40e89fd ("geneve: configure MTU based on a lower device") added an IS_ENABLED(CONFIG_IPV6) to geneve, leading to the following link error with CONFIG_GENEVE=y and CONFIG_IPV6=m: drivers/net/geneve.o: In function `geneve_link_config': geneve.c:(.text+0x14c): undefined reference to `rt6_lookup' Fix this by adding a Kconfig dependency and forcing GENEVE to be a module when IPV6 is a module. Fixes: c40e89fd ("geneve: configure MTU based on a lower device") Signed-off-by:
Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by:
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David S. Miller authored
Julian Wiedmann says: ==================== s390/net: updates 2018-04-26 please apply the following patches to net-next. There's the usual cleanups & small improvements, and Kittipon adds HW offload support for IPv6 checksumming. ==================== Signed-off-by: -
Julian Wiedmann authored
If READ MAC fails to fetch a valid MAC address, allow some more device types (IQD and z/VM OSD) to fall back to a random address. Also use eth_hw_addr_random(), for indicating to userspace that the address type is NET_ADDR_RANDOM. Note that while z/VM has various protection schemes to prohibit custom addresses on its NICs, they are all optional. So we should at least give it a try. Signed-off-by:
Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by:
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Kittipon Meesompop authored
Check if a qeth device supports IPv6 RX checksum offload, and hook it up into the existing NETIF_F_RXCSUM support. As NETIF_F_RXCSUM is now backed by a combination of HW Assists, we need to be a little smarter when dealing with errors during a configuration change: - switching on NETIF_F_RXCSUM only makes sense if at least one HW Assist was enabled successfully. - for switching off NETIF_F_RXCSUM, all available HW Assists need to be deactivated. Signed-off-by:
Kittipon Meesompop <kmeesomp@linux.vnet.ibm.com> Signed-off-by:
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Kittipon Meesompop authored
Check if a qeth device supports IPv6 TX checksum offload, and advertise NETIF_F_IPV6_CSUM accordingly. Add support for setting the relevant bits in IPv6 packet descriptors. Currently this has only limited use (ie. UDP, or Jumbo Frames). For any TCP traffic with a standard MSS, the TCP checksum gets calculated as part of the linear GSO segmentation. Signed-off-by:
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Kittipon Meesompop authored
Add some wrappers to make the protocol-specific Assist code a little more generic, and use them for sending protocol-agnostic commands in the Checksum Offload Assist code. Signed-off-by:
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Kittipon Meesompop authored
For new functionality, the L2 subdriver will start using IPv6 assists. So move the query from the L3 subdriver into the common setup path. Signed-off-by:
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Kittipon Meesompop authored
This matches the statistics we gather for the TX offload path. Signed-off-by:
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Julian Wiedmann authored
The kernel does its own validation of the IPv4 header checksum, drivers/HW are not required to handle this. Signed-off-by:
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Julian Wiedmann authored
This consolidates the checksum offload code that was duplicated over the two qeth subdrivers. Signed-off-by:
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Kittipon Meesompop authored
Trivial cleanup, in preparation for a subsequent patch. Signed-off-by:
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Ursula Braun authored
struct net_device contains a dev_port field. Store the OSA port number in this field. Signed-off-by:
Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by:
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Julian Wiedmann authored
When removing a VLAN ID on a L3 device, the driver currently attempts to walk and unregister the VLAN device's IP addresses. This can be safely removed - before qeth_l3_vlan_rx_kill_vid() even gets called, we receive an inet[6]addr event for each IP on the device and qeth_l3_handle_ip_event() unregisters the address accordingly. Signed-off-by:
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Julian Wiedmann authored
As the vid_list is only accessed from process context, there's no need to protect it with a spinlock. Signed-off-by:
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Julian Wiedmann authored
Both qeth sub drivers use the same QDIO queue handlers, there's no need to expose them via the driver's discipline. No functional change. Signed-off-by:
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YueHaibing authored
Use hlist_entry_safe() instead of open-coding it. Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Reviewed-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by:
Stephen Hemminger <stephen@networkplumber.org> Signed-off-by:
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David S. Miller authored
Pradeep Nalla says: ==================== liquidio: add support for ndo_get_stats64 Support ndo_get_stats64 instead of ndo_get_stats. Also add stats for multicast and broadcast packets. ==================== Signed-off-by: -
Pradeep Nalla authored
Support ndo_get_stats64 instead of ndo_get_stats. Also add stats for multicast and broadcast packets. Signed-off-by:
Pradeep Nalla <pradeep.nalla@cavium.com> Acked-by:
Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by:
Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by:
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Pradeep Nalla authored
To support the next patch in this series which has code that calls octnet_get_link_stats from two different .c files, move that function (and its dependency octnet_nic_stats_callback) to lio_core.c. Remove octnet_get_link_stats's static declaration and add its function prototype in octeon_network.h. Signed-off-by:
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David S. Miller authored
Make PHYLIB boolean, because we reference phylib provided symbols now from net/core/ethtool.c and therefore 'm' doesn't work. Signed-off-by: -
David S. Miller authored
Florian Fainelli says: ==================== net: Extend availability of PHY statistics This patch series adds support for retrieving PHY statistics with DSA switches when the CPU port uses a PHY to PHY connection (as opposed to MAC to MAC). To get there a number of things are done: - first we move the code dealing with PHY statistics outside of net/core/ethtool.c and create helper functions since the same code will be reused - then we allow network device drivers to provide an ethtool_get_phy_stats callback when the standard PHY library helpers are not suitable - we update the DSA functions dealing with ethtool operations to get passed a stringset instead of assuming ETH_SS_STATS like they currently do - then we provide a set of standard helpers within DSA as a framework and add the plumbing to allow retrieving the PHY statistics of the CPU port(s) - finally plug support for retrieving such PHY statistics with the b53 driver Changes in v3: - retrict the b53 change to 539x and 531x5 series of switches - added a change to dsa_loop.c to help test the feature Changes in v2: - got actual testing when the DSA master network device has a PHY that already provides statistics (thanks Nikita!) - fixed the kbuild error reported when CONFIG_PHYLIB=n - removed the checking of ops which is redundant and not needed ==================== Signed-off-by: -
Florian Fainelli authored
We just return the same statistics through ethtool_get_stats() and ethtool_get_phy_stats() for simplicity since this is just a mock-up driver. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Florian Fainelli authored
Allow the b53 driver to return PHY statistics when the CPU port used is different than 5, 7 or 8, because those are typically PHY-less on most devices. This is useful for debugging link problems between the switch and an external host when using a non standard CPU port number (e.g: 4). Signed-off-by:
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Florian Fainelli authored
Implement the same type of ethtool diversion that we have for ETH_SS_STATS and make it work with ETH_SS_PHY_STATS. This allows providing PHY level statistics for CPU ports that are directly connecting to a PHY device. Signed-off-by:
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Florian Fainelli authored
In preparation for having more call sites attempting to obtain a reference against a PHY device corresponding to a particular port, introduce a helper function for that purpose. Signed-off-by:
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Florian Fainelli authored
Up until now we largely assumed that we were interested in ETH_SS_STATS type of strings for all ethtool operations, this is about to change with the introduction of additional string sets, e.g: ETH_SS_PHY_STATS. Update all functions to take an appropriate stringset argument and act on it when it is different than ETH_SS_STATS for now. Signed-off-by:
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Florian Fainelli authored
This is completely redundant with what netdev_set_default_ethtool_ops() does, we are always guaranteed to have a valid dev->ethtool_ops pointer, however, within that structure, not all function calls may be populated, so we still have to check them individually. Signed-off-by:
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Florian Fainelli authored
Add a new callback: get_ethtool_phy_stats() which allows network device drivers not making use of the PHY library to return PHY statistics. Update ethtool_get_phy_stats(), __ethtool_get_sset_count() and __ethtool_get_strings() accordingly to interogate the network device about ETH_SS_PHY_STATS. Signed-off-by:
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Florian Fainelli authored
In order to make it possible for network device drivers that do not necessarily have a phy_device attached, but still report PHY statistics, have a preliminary refactoring consisting in creating helper functions that encapsulate the PHY device driver knowledge within PHYLIB. Signed-off-by:
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Guillaume Nault authored
The 'pppol2tp' procfs and 'l2tp/tunnels' debugfs files handle reference counting of sessions differently than for tunnels. For consistency, use the same mechanism for handling both sessions and tunnels. That is, drop the reference on the previous session just before looking up the next one (rather than in .show()). If necessary (if dump stops before *_next_session() returns NULL), drop the last reference in .stop(). Signed-off-by:
Guillaume Nault <g.nault@alphalink.fr> Signed-off-by:
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Jon Maloy authored
After the introduction of a 128-bit node identity it may be difficult for a user to correlate between this identity and the generated node hash address. We now try to make this easier by introducing a new ioctl() call for fetching a node identity by using the hash value as key. This will be particularly useful when we extend some of the commands in the 'tipc' tool, but we also expect regular user applications to need this feature. Acked-by:
Ying Xue <ying.xue@windriver.com> Signed-off-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller authored
Daniel Borkmann says: ==================== pull-request: bpf-next 2018-04-27 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Add extensive BPF helper description into include/uapi/linux/bpf.h and a new script bpf_helpers_doc.py which allows for generating a man page out of it. Thus, every helper in BPF now comes with proper function signature, detailed description and return code explanation, from Quentin. 2) Migrate the BPF collect metadata tunnel tests from BPF samples over to the BPF selftests and further extend them with v6 vxlan, geneve and ipip tests, simplify the ipip tests, improve documentation and convert to bpf_ntoh*() / bpf_hton*() api, from William. 3) Currently, helpers that expect ARG_PTR_TO_MAP_{KEY,VALUE} can only access stack and packet memory. Extend this to allow such helpers to also use map values, which enabled use cases where value from a first lookup can be directly used as a key for a second lookup, from Paul. 4) Add a new helper bpf_skb_get_xfrm_state() for tc BPF programs in order to retrieve XFRM state information containing SPI, peer address and reqid values, from Eyal. 5) Various optimizations in nfp driver's BPF JIT in order to turn ADD and SUB instructions with negative immediate into the opposite operation with a positive immediate such that nfp can better fit small immediates into instructions. Savings in instruction count up to 4% have been observed, from Jakub. 6) Add the BPF prog's gpl_compatible flag to struct bpf_prog_info and add support for dumping this through bpftool, from Jiri. 7) Move the BPF sockmap samples over into BPF selftests instead since sockmap was rather a series of tests than sample anyway and this way this can be run from automated bots, from John. 8) Follow-up fix for bpf_adjust_tail() helper in order to make it work with generic XDP, from Nikita. 9) Some follow-up cleanups to BTF, namely, removing unused defines from BTF uapi header and renaming 'name' struct btf_* members into name_off to make it more clear they are offsets into string section, from Martin. 10) Remove test_sock_addr from TEST_GEN_PROGS in BPF selftests since not run directly but invoked from test_sock_addr.sh, from Yonghong. 11) Remove redundant ret assignment in sample BPF loader, from Wang. 12) Add couple of missing files to BPF selftest's gitignore, from Anders. There are two trivial merge conflicts while pulling: 1) Remove samples/sockmap/Makefile since all sockmap tests have been moved to selftests. 2) Add both hunks from tools/testing/selftests/bpf/.gitignore to the file since git should ignore all of them. ==================== Signed-off-by:
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