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2017-01-13tcp: add reordering timer in RACK loss detectionYuchung Cheng7-11/+61
This patch makes RACK install a reordering timer when it suspects some packets might be lost, but wants to delay the decision a little bit to accomodate reordering. It does not create a new timer but instead repurposes the existing RTO timer, because both are meant to retransmit packets. Specifically it arms a timer ICSK_TIME_REO_TIMEOUT when the RACK timing check fails. The wait time is set to RACK.RTT + RACK.reo_wnd - (NOW - Packet.xmit_time) + fudge This translates to expecting a packet (Packet) should take (RACK.RTT + RACK.reo_wnd + fudge) to deliver after it was sent. When there are multiple packets that need a timer, we use one timer with the maximum timeout. Therefore the timer conservatively uses the maximum window to expire N packets by one timeout, instead of N timeouts to expire N packets sent at different times. The fudge factor is 2 jiffies to ensure when the timer fires, all the suspected packets would exceed the deadline and be marked lost by tcp_rack_detect_loss(). It has to be at least 1 jiffy because the clock may tick between calling icsk_reset_xmit_timer(timeout) and actually hang the timer. The next jiffy is to lower-bound the timeout to 2 jiffies when reo_wnd is < 1ms. When the reordering timer fires (tcp_rack_reo_timeout): If we aren't in Recovery we'll enter fast recovery and force fast retransmit. This is very similar to the early retransmit (RFC5827) except RACK is not constrained to only enter recovery for small outstanding flights. Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-13tcp: record most recent RTT in RACK loss detectionYuchung Cheng2-32/+45
Record the most recent RTT in RACK. It is often identical to the "ca_rtt_us" values in tcp_clean_rtx_queue. But when the packet has been retransmitted, RACK choses to believe the ACK is for the (latest) retransmitted packet if the RTT is over minimum RTT. This requires passing the arrival time of the most recent ACK to RACK routines. The timestamp is now recorded in the "ack_time" in tcp_sacktag_state during the ACK processing. This patch does not change the RACK algorithm itself. It only adds the RTT variable to prepare the next main patch. Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-13tcp: new helper for RACK to detect lossYuchung Cheng2-13/+21
Create a new helper tcp_rack_detect_loss to prepare the upcoming RACK reordering timer patch. Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-13tcp: new helper function for RACK loss detectionYuchung Cheng1-7/+14
Create a new helper tcp_rack_mark_skb_lost to prepare the upcoming RACK reordering timer support. Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-12ipv6: sr: static percpu allocation for hmac_ringEric Dumazet1-40/+3
Current allocations are not NUMA aware, and lack proper cleanup in case of error. It is perfectly fine to use static per cpu allocations for 256 bytes per cpu. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: David Lebrun <david.lebrun@uclouvain.be> Acked-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-12ipmr: improve hash scalabilityNikolay Aleksandrov1-115/+140
Recently we started using ipmr with thousands of entries and easily hit soft lockups on smaller devices. The reason is that the hash function uses the high order bits from the src and dst, but those don't change in many common cases, also the hash table is only 64 elements so with thousands it doesn't scale at all. This patch migrates the hash table to rhashtable, and in particular the rhl interface which allows for duplicate elements to be chained because of the MFC_PROXY support (*,G; *,*,oif cases) which allows for multiple duplicate entries to be added with different interfaces (IMO wrong, but it's been in for a long time). And here are some results from tests I've run in a VM: mr_table size (default, allocated for all namespaces): Before After 49304 bytes 2400 bytes Add 65000 routes (the diff is much larger on smaller devices): Before After 1m42s 58s Forwarding 256 byte packets with 65000 routes (test done in a VM): Before After 3 Mbps / ~1465 pps 122 Mbps / ~59000 pps As a bonus we no longer see the soft lockups on smaller devices which showed up even with 2000 entries before. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-12secure_seq: fix sparse errorsEric Dumazet1-1/+3
Fixes following warnings : net/core/secure_seq.c:125:28: warning: incorrect type in argument 1 (different base types) net/core/secure_seq.c:125:28: expected unsigned int const [unsigned] [usertype] a net/core/secure_seq.c:125:28: got restricted __be32 [usertype] saddr net/core/secure_seq.c:125:35: warning: incorrect type in argument 2 (different base types) net/core/secure_seq.c:125:35: expected unsigned int const [unsigned] [usertype] b net/core/secure_seq.c:125:35: got restricted __be32 [usertype] daddr net/core/secure_seq.c:125:43: warning: cast from restricted __be16 net/core/secure_seq.c:125:61: warning: restricted __be16 degrades to integer Fixes: 7cd23e5300c1 ("secure_seq: use SipHash in place of MD5") Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-12lwt_bpf: bpf_lwt_prog_cmp() can be staticWei Yongjun1-1/+1
Fixes the following sparse warning: net/core/lwt_bpf.c:355:5: warning: symbol 'bpf_lwt_prog_cmp' was not declared. Should it be static? Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-12bpf: allow b/h/w/dw access for bpf's cb in ctxDaniel Borkmann1-8/+33
When structs are used to store temporary state in cb[] buffer that is used with programs and among tail calls, then the generated code will not always access the buffer in bpf_w chunks. We can ease programming of it and let this act more natural by allowing for aligned b/h/w/dw sized access for cb[] ctx member. Various test cases are attached as well for the selftest suite. Potentially, this can also be reused for other program types to pass data around. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-12bpf: pass original insn directly to convert_ctx_accessDaniel Borkmann1-65/+74
Currently, when calling convert_ctx_access() callback for the various program types, we pass in insn->dst_reg, insn->src_reg, insn->off from the original instruction. This information is needed to rewrite the instruction that is based on the user ctx structure into a kernel representation for the ctx. As we'd like to allow access size beyond just BPF_W, we'd need also insn->code for that in order to decode the original access size. Given that, lets just pass insn directly to the convert_ctx_access() callback and work on that to not clutter the callback with even more arguments we need to pass when everything is already contained in insn. So lets go through that once, no functional change. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-12smc: ETH_ALEN as memcpy length for mac addressesUrsula Braun2-7/+7
When creating an SMC connection, there is a CLC (connection layer control) handshake to prepare for RDMA traffic. The corresponding code is part of commit 0cfdd8f92cac ("smc: connection and link group creation"). Mac addresses to be exchanged in the handshake are copied with a wrong length of 12 instead of 6 bytes. Following code overwrites the wrongly copied code, but nevertheless the correct length should already be used for the preceding mac address copying. Use ETH_ALEN for the memcpy length with mac addresses. Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Fixes: 0cfdd8f92cac ("smc: connection and link group creation") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-12net: fix AF_SMC related typoUrsula Braun1-1/+1
When introducing the new socket family AF_SMC in commit ac7138746e14 ("smc: establish new socket family"), a typo in af_family_clock_key_strings has slipped in. This patch repairs it. Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Fixes: ac7138746e14 ("smc: establish new socket family") Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-12net: core: Make netif_wake_subqueue a wrapperFlorian Fainelli1-22/+0
netif_wake_subqueue() is duplicating the same thing that netif_tx_wake_queue() does, so make it call it directly after looking up the queue from the index. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller15-39/+48
Two AF_* families adding entries to the lockdep tables at the same time. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-4/+4
Merge fixes from Andrew Morton: "27 fixes. There are three patches that aren't actually fixes. They're simple function renamings which are nice-to-have in mainline as ongoing net development depends on them." * akpm: (27 commits) timerfd: export defines to userspace mm/hugetlb.c: fix reservation race when freeing surplus pages mm/slab.c: fix SLAB freelist randomization duplicate entries zram: support BDI_CAP_STABLE_WRITES zram: revalidate disk under init_lock mm: support anonymous stable page mm: add documentation for page fragment APIs mm: rename __page_frag functions to __page_frag_cache, drop order from drain mm: rename __alloc_page_frag to page_frag_alloc and __free_page_frag to page_frag_free mm, memcg: fix the active list aging for lowmem requests when memcg is enabled mm: don't dereference struct page fields of invalid pages mailmap: add codeaurora.org names for nameless email commits signal: protect SIGNAL_UNKILLABLE from unintentional clearing. mm: pmd dirty emulation in page fault handler ipc/sem.c: fix incorrect sem_lock pairing lib/Kconfig.debug: fix frv build failure mm: get rid of __GFP_OTHER_NODE mm: fix remote numa hits statistics mm: fix devm_memremap_pages crash, use mem_hotplug_{begin, done} ocfs2: fix crash caused by stale lvb with fsdlm plugin ...
2017-01-11net/sched: cls_flower: Support matching on ARPSimon Horman1-0/+51
Support matching on ARP operation, and hardware and protocol addresses for Ethernet hardware and IPv4 protocol addresses. Example usage: tc qdisc add dev eth0 ingress tc filter add dev eth0 protocol arp parent ffff: flower indev eth0 \ arp_op request arp_sip 10.0.0.1 action drop tc filter add dev eth0 protocol rarp parent ffff: flower indev eth0 \ arp_op reply arp_tha 52:54:3f:00:00:00/24 action drop Signed-off-by: Simon Horman <simon.horman@netronome.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11flow disector: ARP supportSimon Horman1-0/+57
Allow dissection of (R)ARP operation hardware and protocol addresses for Ethernet hardware and IPv4 protocol addresses. There are currently no users of FLOW_DISSECTOR_KEY_ARP. A follow-up patch will allow FLOW_DISSECTOR_KEY_ARP to be used by the flower classifier. Signed-off-by: Simon Horman <simon.horman@netronome.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11sctp: Fix spelling mistake: "Atempt" -> "Attempt"Colin Ian King1-1/+1
Trivial fix to spelling mistake in WARN_ONCE message Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11net: ipv4: Fix multipath selection with vrfDavid Ahern1-2/+7
fib_select_path does not call fib_select_multipath if oif is set in the flow struct. For VRF use cases oif is always set, so multipath route selection is bypassed. Use the FLOWI_FLAG_SKIP_NH_OIF to skip the oif check similar to what is done in fib_table_lookup. Add saddr and proto to the flow struct for the fib lookup done by the VRF driver to better match hash computation for a flow. Fixes: 613d09b30f8b ("net: Use VRF device index for lookups on TX") Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11Revert "net: dsa: Implement ndo_get_phys_port_id"Florian Fainelli1-10/+0
This reverts commit 3a543ef479868e36c95935de320608a7e41466ca ("net: dsa: Implement ndo_get_phys_port_id") since it misuses the purpose of ndo_get_phys_port_id(). We have ndo_get_phys_port_name() to do the correct thing for us now. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11net: dsa: Implement ndo_get_phys_port_name()Florian Fainelli1-0/+10
Return the physical port number of a DSA created network device using ndo_get_phys_port_name(). Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11cgroup: move CONFIG_SOCK_CGROUP_DATA to init/KconfigArnd Bergmann1-4/+0
We now 'select SOCK_CGROUP_DATA' but Kconfig complains that this is not right when CONFIG_NET is disabled and there is no socket interface: warning: (CGROUP_BPF) selects SOCK_CGROUP_DATA which has unmet direct dependencies (NET) I don't know what the correct solution for this is, but simply removing the dependency on NET from SOCK_CGROUP_DATA by moving it out of the 'if NET' section avoids the warning and does not produce other build errors. Fixes: 483c4933ea09 ("cgroup: Fix CGROUP_BPF config") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11net: dsa: make "label" property optional for dsa2Vivien Didelot1-20/+4
In the new DTS bindings for DSA (dsa2), the "ethernet" and "link" phandles are respectively mandatory and exclusive to CPU port and DSA link device tree nodes. Simplify dsa2.c a bit by checking the presence of such phandle instead of checking the redundant "label" property. Then the Linux philosophy for Ethernet switch ports is to expose them to userspace as standard NICs by default. Thus use the standard enumerated "eth%d" device name if no "label" property is provided for a user port. This allows to save DTS files from subjective net device names. If one wants to rename an interface, udev rules can be used as usual. Of course the current behavior is unchanged, and the optional "label" property for user ports has precedence over the enumerated name. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Uwe Kleine-König <uwe@kleine-koenig.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-11gro: use min_t() in skb_gro_reset_offset()Eric Dumazet1-2/+3
On 32bit arches, (skb->end - skb->data) is not 'unsigned int', so we shall use min_t() instead of min() to avoid a compiler error. Fixes: 1272ce87fa01 ("gro: Enter slow-path if there is no tailroom") Reported-by: kernel test robot <fengguang.wu@intel.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10mm: rename __alloc_page_frag to page_frag_alloc and __free_page_frag to ↵Alexander Duyck1-4/+4
page_frag_free Patch series "Page fragment updates", v4. This patch series takes care of a few cleanups for the page fragments API. First we do some renames so that things are much more consistent. First we move the page_frag_ portion of the name to the front of the functions names. Secondly we split out the cache specific functions from the other page fragment functions by adding the word "cache" to the name. Finally I added a bit of documentation that will hopefully help to explain some of this. I plan to revisit this later as we get things more ironed out in the near future with the changes planned for the DMA setup to support eXpress Data Path. This patch (of 3): This patch renames the page frag functions to be more consistent with other APIs. Specifically we place the name page_frag first in the name and then have either an alloc or free call name that we append as the suffix. This makes it a bit clearer in terms of naming. In addition we drop the leading double underscores since we are technically no longer a backing interface and instead the front end that is called from the networking APIs. Link: http://lkml.kernel.org/r/20170104023854.13451.67390.stgit@localhost.localdomain Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-01-10gro: Disable frag0 optimization on IPv6 ext headersHerbert Xu1-0/+1
The GRO fast path caches the frag0 address. This address becomes invalid if frag0 is modified by pskb_may_pull or its variants. So whenever that happens we must disable the frag0 optimization. This is usually done through the combination of gro_header_hard and gro_header_slow, however, the IPv6 extension header path did the pulling directly and would continue to use the GRO fast path incorrectly. This patch fixes it by disabling the fast path when we enter the IPv6 extension header path. Fixes: 78a478d0efd9 ("gro: Inline skb_gro_header and cache frag0 virtual address") Reported-by: Slava Shwartsman <slavash@mellanox.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10gro: Enter slow-path if there is no tailroomHerbert Xu1-1/+2
The GRO path has a fast-path where we avoid calling pskb_may_pull and pskb_expand by directly accessing frag0. However, this should only be done if we have enough tailroom in the skb as otherwise we'll have to expand it later anyway. This patch adds the check by capping frag0_len with the skb tailroom. Fixes: cb18978cbf45 ("gro: Open-code final pskb_may_pull") Reported-by: Slava Shwartsman <slavash@mellanox.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10net/af_iucv: don't use paged skbs for TX on HiperSocketsJulian Wiedmann1-11/+14
With commit e53743994e21 ("af_iucv: use paged SKBs for big outbound messages"), we transmit paged skbs for both of AF_IUCV's transport modes (IUCV or HiperSockets). The qeth driver for Layer 3 HiperSockets currently doesn't support NETIF_F_SG, so these skbs would just be linearized again by the stack. Avoid that overhead by using paged skbs only for IUCV transport. cc stable, since this also circumvents a significant skb leak when sending large messages (where the skb then needs to be linearized). Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Cc: <stable@vger.kernel.org> # v4.8+ Fixes: e53743994e21 ("af_iucv: use paged SKBs for big outbound messages") Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10packet: pdiag_put_ring() should return TX_RING info for TPACKET_V3Sowmini Varadhan1-2/+1
Commit 7f953ab2ba46 ("af_packet: TX_RING support for TPACKET_V3") now makes it possible to use TX_RING with TPACKET_V3, so make the the relevant information available via 'ss -e -a --packet' Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10net: add the AF_QIPCRTR entries to family name tablesAnna, Suman1-3/+3
Commit bdabad3e363d ("net: Add Qualcomm IPC router") introduced a new address family. Update the family name tables accordingly so that the lockdep initialization can use the proper names for this family. Cc: Courtney Cavin <courtney.cavin@sonymobile.com> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10net: qrtr: Mark 'buf' as little endianStephen Boyd1-2/+2
Failure to mark this pointer as __le32 causes checkers like sparse to complain: net/qrtr/qrtr.c:274:16: warning: incorrect type in assignment (different base types) net/qrtr/qrtr.c:274:16: expected unsigned int [unsigned] [usertype] <noident> net/qrtr/qrtr.c:274:16: got restricted __le32 [usertype] <noident> net/qrtr/qrtr.c:275:16: warning: incorrect type in assignment (different base types) net/qrtr/qrtr.c:275:16: expected unsigned int [unsigned] [usertype] <noident> net/qrtr/qrtr.c:275:16: got restricted __le32 [usertype] <noident> net/qrtr/qrtr.c:276:16: warning: incorrect type in assignment (different base types) net/qrtr/qrtr.c:276:16: expected unsigned int [unsigned] [usertype] <noident> net/qrtr/qrtr.c:276:16: got restricted __le32 [usertype] <noident> Silence it. Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10net: dsa: Ensure validity of dst->ds[0]Florian Fainelli1-4/+7
It is perfectly possible to have non zero indexed switches being present in a DSA switch tree, in such a case, we will be deferencing a NULL pointer while dsa_cpu_port_ethtool_{setup,restore}. Be more defensive and ensure that dst->ds[0] is valid before doing anything with it. Fixes: 0c73c523cf73 ("net: dsa: Initialize CPU port ethtool ops per tree") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10net: skb_flow_get_be16() can be staticEric Dumazet1-2/+2
Removes following sparse complain : net/core/flow_dissector.c:70:8: warning: symbol 'skb_flow_get_be16' was not declared. Should it be static? Fixes: 972d3876faa8 ("flow dissector: ICMP support") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10net: socket: Make unnecessarily global sockfs_setattr() staticTobias Klauser1-1/+1
Make sockfs_setattr() static as it is not used outside of net/socket.c This fixes the following GCC warning: net/socket.c:534:5: warning: no previous prototype for ‘sockfs_setattr’ [-Wmissing-prototypes] Fixes: 86741ec25462 ("net: core: Add a UID field to struct sock.") Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09net: dsa: select NET_SWITCHDEVVivien Didelot1-2/+3
The support for DSA Ethernet switch chips depends on TCP/IP networking, thus explicit that HAVE_NET_DSA depends on INET. DSA uses SWITCHDEV, thus select it instead of depending on it. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09tcp: make TCP_INFO more consistentEric Dumazet1-4/+4
tcp_get_info() has to lock the socket, so lets lock it for an extended critical section, so that various fields have consistent values. This solves an annoying issue that some applications reported when multiple counters are updated during one particular rx/rx event, and TCP_INFO was called from another cpu. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09bpf: rename ARG_PTR_TO_STACKAlexei Starovoitov1-20/+20
since ARG_PTR_TO_STACK is no longer just pointer to stack rename it to ARG_PTR_TO_MEM and adjust comment. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09tcp: do not export tcp_peer_is_proven()Eric Dumazet1-1/+0
After commit 1fb6f159fd21 ("tcp: add tcp_conn_request"), tcp_peer_is_proven() no longer needs to be exported. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09ipv4: make tcp_notsent_lowat sysctl knob behave as true unsigned intPavel Tikhomirov1-1/+1
> cat /proc/sys/net/ipv4/tcp_notsent_lowat -1 > echo 4294967295 > /proc/sys/net/ipv4/tcp_notsent_lowat -bash: echo: write error: Invalid argument > echo -2147483648 > /proc/sys/net/ipv4/tcp_notsent_lowat > cat /proc/sys/net/ipv4/tcp_notsent_lowat -2147483648 but in documentation we have "tcp_notsent_lowat - UNSIGNED INTEGER" v2: simplify to just proc_douintvec Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09ipv6: fix typosAlexander Alemayhu1-2/+2
o s/approriate/appropriate o s/discouvery/discovery Signed-off-by: Alexander Alemayhu <alexander@alemayhu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: netlink interface for SMC socketsUrsula Braun6-1/+270
Support for SMC socket monitoring via netlink sockets of protocol NETLINK_SOCK_DIAG. Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: socket closing and linkgroup cleanupUrsula Braun11-36/+668
smc_shutdown() and smc_release() handling delayed linkgroup cleanup for linkgroups without connections Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: receive data from RMBEUrsula Braun9-3/+304
move RMBE data into user space buffer and update managing cursors Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: send data (through RDMA)Ursula Braun6-4/+491
copy data to kernel send buffer, and trigger RDMA write Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: connection data control (CDC)Ursula Braun8-0/+641
send and receive CDC messages (via IB message send and CQE) Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: link layer control (LLC)Ursula Braun7-3/+330
send and receive LLC messages CONFIRM_LINK (via IB message send and CQE) Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: initialize IB transport incl. PD, MR, QP, CQ, event, WRUrsula Braun8-9/+374
Prepare the link for RDMA transport: Create a queue pair (QP) and move it into the state Ready-To-Receive (RTR). Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: work request (WR) base for use by LLC and CDCUrsula Braun8-1/+790
The base containers for RDMA transport are work requests and completion queue entries processed through Infiniband verbs: * allocate and initialize these areas * map these areas to DMA * implement the basic communication consisting of work request posting and receival of completion queue events Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: remote memory buffers (RMBs)Ursula Braun7-7/+342
* allocate data RMB memory for sending and receiving * size depends on the maximum socket send and receive buffers * allocated RMBs are kept during life time of the owning link group * map the allocated RMBs to DMA Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09smc: connection and link group creationUrsula Braun7-17/+605
* create smc_connection for SMC-sockets * determine suitable link group for a connection * create a new link group if necessary Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-30 12:14:51 +0000