- 04 Mar, 2018 4 commits
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Daniel Axtens authored
Replace skb_gso_network_seglen() with skb_gso_validate_network_len(), as it considers the GSO_BY_FRAGS case. Signed-off-by:
Daniel Axtens <dja@axtens.net> Reviewed-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Daniel Axtens authored
tbf_enqueue() checks the size of a packet before enqueuing it. However, the GSO size check does not consider the GSO_BY_FRAGS case, and so will drop GSO SCTP packets, causing a massive drop in throughput. Use skb_gso_validate_mac_len() instead, as it does consider that case. Signed-off-by:
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Daniel Axtens authored
If you take a GSO skb, and split it into packets, will the network length (L3 headers + L4 headers + payload) of those packets be small enough to fit within a given MTU? skb_gso_validate_mtu gives you the answer to that question. However, we recently added to add a way to validate the MAC length of a split GSO skb (L2+L3+L4+payload), and the names get confusing, so rename skb_gso_validate_mtu to skb_gso_validate_network_len Signed-off-by:
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git://git.open-mesh.org/linux-mergeDavid S. Miller authored
Simon Wunderlich says: ==================== Here are some batman-adv bugfixes: - fix skb checksum issues, by Matthias Schiffer (2 patches) - fix exception handling when dumping data objects through netlink, by Sven Eckelmann (4 patches) - fix handling of interface indices, by Sven Eckelmann ==================== Signed-off-by:
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- 03 Mar, 2018 1 commit
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller authored
Pablo Neira Ayuso says: ==================== Netfilter/IPVS fixes for net The following patchset contains Netfilter fixes for your net tree, they are: 1) Put back reference on CLUSTERIP configuration structure from the error path, patch from Florian Westphal. 2) Put reference on CLUSTERIP configuration instead of freeing it, another cpu may still be walking over it, also from Florian. 3) Refetch pointer to IPv6 header from nf_nat_ipv6_manip_pkt() given packet manipulation may reallocation the skbuff header, from Florian. 4) Missing match size sanity checks in ebt_among, from Florian. 5) Convert BUG_ON to WARN_ON in ebtables, from Florian. 6) Sanity check userspace offsets from ebtables kernel, from Florian. 7) Missing checksum replace call in flowtable IPv4 DNAT, from Felix Fietkau. 8) Bump the right stats on checksum error from bridge netfilter, from Taehee Yoo. 9) Unset interface flag in IPv6 fib lookups otherwise we get misleading routing lookup results, from Florian. 10) Missing sk_to_full_sk() in ip6_route_me_harder() from Eric Dumazet. 11) Don't allow devices to be part of multiple flowtables at the same time, this may break setups. 12) Missing netlink attribute validation in flowtable deletion. 13) Wrong array index in nf_unregister_net_hook() call from error path in flowtable addition path. 14) Fix FTP IPVS helper when NAT mangling is in place, patch from Julian Anastasov. ==================== Signed-off-by:
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- 02 Mar, 2018 6 commits
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David S. Miller authored
Merge tag 'mac80211-for-davem-2018-03-02' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== Three more patches: * fix for a regression in 4-addr mode with fast-RX * fix for a Kconfig problem with the new regdb * fix for the long-standing TCP performance issue in wifi using the new sk_pacing_shift_update() ==================== Signed-off-by:
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Ka-Cheong Poon authored
Commit 0933a578 ("rds: tcp: use sock_create_lite() to create the accept socket") has a reference counting issue in TCP socket creation when accepting a new connection. The code uses sock_create_lite() to create a kernel socket. But it does not do __module_get() on the socket owner. When the connection is shutdown and sock_release() is called to free the socket, the owner's reference count is decremented and becomes incorrect. Note that this bug only shows up when the socket owner is configured as a kernel module. v2: Update comments Fixes: 0933a578 ("rds: tcp: use sock_create_lite() to create the accept socket") Signed-off-by:
Ka-Cheong Poon <ka-cheong.poon@oracle.com> Acked-by:
Santosh Shilimkar <santosh.shilimkar@oracle.com> Acked-by:
Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller authored
Daniel Borkmann says: ==================== pull-request: bpf 2018-02-28 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Add schedule points and reduce the number of loop iterations the test_bpf kernel module is performing in order to not hog the CPU for too long, from Eric. 2) Fix an out of bounds access in tail calls in the ppc64 BPF JIT compiler, from Daniel. 3) Fix a crash on arm64 on unaligned BPF xadd operations that could be triggered via interpreter and JIT, from Daniel. Please not that once you merge net into net-next at some point, there is a minor merge conflict in test_verifier.c since test cases had been added at the end in both trees. Resolution is trivial: keep all the test cases from both trees. ==================== Signed-off-by: -
Edward Cree authored
If ethtool_ops->get_fecparam returns an error, pass that error on to the user, rather than ignoring it. Fixes: 1a5f3da2 ("net: ethtool: add support for forward error correction modes") Signed-off-by:
Edward Cree <ecree@solarflare.com> Signed-off-by:
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Stephen Suryaputra authored
When ip_error() is called the device is the l3mdev master instead of the original device. So the forwarding check should be on the original one. Changes from v2: - Handle the original device disappearing (per David Ahern) - Minimize the change in code order Changes from v1: - Only need to reset the device on which __in_dev_get_rcu() is done (per David Ahern). Signed-off-by:
Stephen Suryaputra <ssuryaextr@gmail.com> Acked-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
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Mike Manning authored
Setting an interface into a VRF fails with 'RTNETLINK answers: File exists' if one of its VLAN interfaces is already in the same VRF. As the VRF is an upper device of the VLAN interface, it is also showing up as an upper device of the interface itself. The solution is to restrict this check to devices other than master. As only one master device can be linked to a device, the check in this case is that the upper device (VRF) being linked to is not the same as the master device instead of it not being any one of the upper devices. The following example shows an interface ens12 (with a VLAN interface ens12.10) being set into VRF green, which behaves as expected: # ip link add link ens12 ens12.10 type vlan id 10 # ip link set dev ens12 master vrfgreen # ip link show dev ens12 3: ens12: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master vrfgreen state UP mode DEFAULT group default qlen 1000 link/ether 52:54:00:4c:a0:45 brd ff:ff:ff:ff:ff:ff But if the VLAN interface has previously been set into the same VRF, then setting the interface into the VRF fails: # ip link set dev ens12 nomaster # ip link set dev ens12.10 master vrfgreen # ip link show dev ens12.10 39: ens12.10@ens12: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vrfgreen state UP mode DEFAULT group default qlen 1000 link/ether 52:54:00:4c:a0:45 brd ff:ff:ff:ff:ff:ff # ip link set dev ens12 master vrfgreen RTNETLINK answers: File exists The workaround is to move the VLAN interface back into the default VRF beforehand, but it has to be shut first so as to avoid the risk of traffic leaking from the VRF. This fix avoids needing this workaround. Signed-off-by:Mike Manning <mmanning@att.com> Signed-off-by:
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- 01 Mar, 2018 1 commit
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Arnd Bergmann authored
The newly introudced ip_min_valid_pmtu variable is only used when CONFIG_SYSCTL is set: net/ipv4/route.c:135:12: error: 'ip_min_valid_pmtu' defined but not used [-Werror=unused-variable] This moves it to the other variables like it, to avoid the harmless warning. Fixes: c7272c2f ("net: ipv4: don't allow setting net.ipv4.route.min_pmtu below 68") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Sabrina Dubroca <sd@queasysnail.net> Signed-off-by:
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- 28 Feb, 2018 25 commits
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Julian Anastasov authored
The IPS_NAT_MASK check in 4.12 replaced previous check for nfct_nat() which was needed to fix a crash in 2.6.36-rc, see commit 7bcbf81a ("ipvs: avoid oops for passive FTP"). But as IPVS does not set the IPS_SRC_NAT and IPS_DST_NAT bits, checking for IPS_NAT_MASK prevents PASV response to be properly mangled and blocks the transfer. Remove the check as it is not needed after 3.12 commit 41d73ec0 ("netfilter: nf_conntrack: make sequence number adjustments usuable without NAT") which changes nfct_nat() with nfct_seqadj() and especially after 3.13 commit b25adce1 ("ipvs: correct usage/allocation of seqadj ext in ipvs"). Thanks to Li Shuang and Florian Westphal for reporting the problem! Reported-by:
Li Shuang <shuali@redhat.com> Fixes: be7be6e1 ("netfilter: ipvs: fix incorrect conflict resolution") Signed-off-by:
Julian Anastasov <ja@ssi.bg> Acked-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org>
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David S. Miller authored
Jiri Pirko says: ==================== mlxsw: couple of fixes Couple of unrelated fixes for mlxsw. --- v1->v2: -patch 2: - rebase on top of current -net tree - removed forgotten empty line -patch 3: - new patch -patch 4: - new patch ==================== Signed-off-by: -
Ido Schimmel authored
One of the basic construct in the device is a port-VLAN pair, which can be bound to a FID or a RIF in order to direct packets to the bridge or the router, respectively. Since not all the netdevs are configured with a VLAN (e.g., sw1p1 vs. sw1p1.10), VID 1 is used to represent these and thus this VID can be used by both upper devices of mlxsw ports and by the driver itself. However, this VID is not reference counted and therefore might be freed prematurely, which can result in various WARNINGs. For example: $ ip link add name br0 type bridge vlan_filtering 1 $ teamd -t team0 -d -c '{"runner": {"name": "lacp"}}' $ ip link set dev team0 master br0 $ ip link set dev enp1s0np1 master team0 $ ip address add 192.0.2.1/24 dev enp1s0np1 The enslavement to team0 will fail because team0 already has an upper and thus vlan_vids_del_by_dev() will be executed as part of team's error path which will delete VID 1 from enp1s0np1 (added by br0 as PVID). The WARNING will be generated when the driver will realize it can't find VID 1 on the port and bind it to a RIF. Fix this by adding a reference count to the VLAN entries on the port, in a similar fashion to the reference counting used by the corresponding 'vlan_vid_info' structure in the 8021q driver. Fixes: c57529e1 ("mlxsw: spectrum: Replace vPorts with Port-VLAN") Reported-by:Tal Bar <talb@mellanox.com> Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Tested-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Ido Schimmel authored
When multicast snooping is enabled, the Linux bridge resorts to flooding unregistered multicast packets to all ports only in case it did not detect a querier in the network. The above condition is not reflected to underlying drivers, which is especially problematic in IPv6 environments, as multicast snooping is enabled by default and since neighbour solicitation packets might be treated as unregistered multicast packets in case there is no corresponding MDB entry. Until the Linux bridge reflects its querier state to underlying drivers, simply treat unregistered multicast packets as broadcast and allow them to reach their destination. Fixes: 9df552ef ("mlxsw: spectrum: Improve IPv6 unregistered multicast flooding") Signed-off-by:
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Jiri Pirko authored
Current code uses global variables, adjusts them and passes pointer down to devlink. With every other mlxsw_core instance, the previously passed pointer values are rewritten. Fix this by de-globalize the variables and also memcpy size_params during devlink resource registration. Also, introduce a convenient size_param_init helper. Fixes: ef3116e5 ("mlxsw: spectrum: Register KVD resources with devlink") Signed-off-by:
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Jiri Pirko authored
IP_TTL, IP_ECN and IP_DSCP are using the same offset within the scratchpad as L4 ports. Fix this by shifting all up. Fixes: 5f57e090 ("mlxsw: acl: Add ip ttl acl element") Fixes: i80d0fe47 ("mlxsw: acl: Add ip tos acl element") Signed-off-by:
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David S. Miller authored
Ursula Braun says: ==================== net/smc: fixes 2018-02-28 here are 3 smc bug fixes for the net-tree. Karsten's first patch is the reworked version of last week's "[PATCH net-next 2/5] net/smc: fix structure size" patch, now solved without using __packed, and now targetted for net instead of net-next. ==================== Signed-off-by: -
Davide Caratti authored
when sock_create_kern(..., a) returns an error, 'a' might not be a valid pointer, so it shouldn't be dereferenced to read a->sk->sk_sndbuf and and a->sk->sk_rcvbuf; not doing that caused the following crash: general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4254 Comm: syzkaller919713 Not tainted 4.16.0-rc1+ #18 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:smc_create+0x14e/0x300 net/smc/af_smc.c:1410 RSP: 0018:ffff8801b06afbc8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801b63457c0 RCX: ffffffff85a3e746 RDX: 0000000000000004 RSI: 00000000ffffffff RDI: 0000000000000020 RBP: ffff8801b06afbf0 R08: 00000000000007c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801b6345c08 R14: 00000000ffffffe9 R15: ffffffff8695ced0 FS: 0000000001afb880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 00000001b0721004 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sock_create+0x4d4/0x850 net/socket.c:1285 sock_create net/socket.c:1325 [inline] SYSC_socketpair net/socket.c:1409 [inline] SyS_socketpair+0x1c0/0x6f0 net/socket.c:1366 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x26/0x9b RIP: 0033:0x4404b9 RSP: 002b:00007fff44ab6908 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004404b9 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000002b RBP: 00007fff44ab6910 R08: 0000000000000002 R09: 00007fff44003031 R10: 0000000020000040 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 Code: 48 c1 ea 03 80 3c 02 00 0f 85 b3 01 00 00 4c 8b a3 48 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 82 01 00 00 4d 8b 7c 24 20 48 b8 00 00 00 00 RIP: smc_create+0x14e/0x300 net/smc/af_smc.c:1410 RSP: ffff8801b06afbc8 Fixes: cd6851f3 smc: remote memory buffers (RMBs) Reported-and-tested-by: syzbot+aa0227369be2dcc26ebe@syzkaller.appspotmail.com Signed-off-by:Davide Caratti <dcaratti@redhat.com> Signed-off-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by:
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Karsten Graul authored
The CONFIRM LINK reply message must contain the link_id sent by the server. And set the link_id explicitly when initializing the link. Signed-off-by:
Karsten Graul <kgraul@linux.vnet.ibm.com> Signed-off-by:
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Karsten Graul authored
The sizeof(struct smc_cdc_msg) evaluates to 48 bytes instead of the required 44 bytes. We need to use the constant value of SMC_WR_TX_SIZE to set and check the control message length. Signed-off-by:
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Jason Wang authored
We try to disable NAPI to prevent a single XDP TX queue being used by multiple cpus. But we don't check if device is up (NAPI is enabled), this could result stall because of infinite wait in napi_disable(). Fixing this by checking device state through netif_running() before. Fixes: 4941d472 ("virtio-net: do not reset during XDP set") Signed-off-by:
Jason Wang <jasowang@redhat.com> Acked-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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Joey Pabalinas authored
The link to the pdf containing the algorithm description is now a dead link; it seems http://www.ifp.illinois.edu/~srikant/ has been moved to https://sites.google.com/a/illinois.edu/srikant/ and none of the original papers can be found there... I have replaced it with the only working copy I was able to find. n.b. there is also a copy available at: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.296.6350&rep=rep1&type=pdf However, this seems to only be a *cached* version, so I am unsure exactly how reliable that link can be expected to remain over time and have decided against using that one. Signed-off-by:
Joey Pabalinas <joeypabalinas@gmail.com> 1 file changed, 1 insertion(+), 1 deletion(-) Signed-off-by:
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Eric Dumazet authored
For tests that are using the maximal number of BPF instruction, each run takes 20 usec. Looping 10,000 times on them totals 200 ms, which is bad when the loop is not preemptible. test_bpf: #264 BPF_MAXINSNS: Call heavy transformations jited:1 19248 18548 PASS test_bpf: #269 BPF_MAXINSNS: ld_abs+get_processor_id jited:1 20896 PASS Lets divide by ten the number of iterations, so that max latency is 20ms. We could use need_resched() to break the loop earlier if we believe 20 ms is too much. Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net>
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Soheil Hassas Yeganeh authored
When the connection is reset, there is no point in keeping the packets on the write queue until the connection is closed. RFC 793 (page 70) and RFC 793-bis (page 64) both suggest purging the write queue upon RST: https://tools.ietf.org/html/draft-ietf-tcpm-rfc793bis-07 Moreover, this is essential for a correct MSG_ZEROCOPY implementation, because userspace cannot call close(fd) before receiving zerocopy signals even when the connection is reset. Fixes: f214f915 ("tcp: enable MSG_ZEROCOPY") Signed-off-by:
Soheil Hassas Yeganeh <soheil@google.com> Reviewed-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
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David S. Miller authored
Yuchung Cheng says: ==================== tcp: revert a F-RTO extension due to broken middle-boxes This patch series reverts a (non-standard) TCP F-RTO extension that aimed to detect more spurious timeouts. Unfortunately it could result in poor performance due to broken middle-boxes that modify TCP packets. E.g. https://www.spinics.net/lists/netdev/msg484154.html We believe the best and simplest solution is to just revert the change. ==================== Signed-off-by:
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Yuchung Cheng authored
This reverts commit 89fe18e4. While the patch could detect more spurious timeouts, it could cause poor TCP performance on broken middle-boxes that modifies TCP packets (e.g. receive window, SACK options). Since the performance gain is much smaller compared to the potential loss. The best solution is to fully revert the change. Fixes: 89fe18e4 ("tcp: extend F-RTO to catch more spurious timeouts") Reported-by:
Teodor Milkov <tm@del.bg> Signed-off-by:
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Yuchung Cheng authored
This reverts commit cc663f4d. While fixing some broken middle-boxes that modifies receive window fields, it does not address middle-boxes that strip off SACK options. The best solution is to fully revert this patch and the root F-RTO enhancement. Fixes: cc663f4d ("tcp: restrict F-RTO to work-around broken middle-boxes") Reported-by:
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David S. Miller authored
Julian Wiedmann says: ==================== s390/qeth: fixes 2018-02-27 please apply some more qeth patches for -net and stable. One patch fixes a performance bug in the TSO path. Then there's several more fixes for IP management on L3 devices - including a revert, so that the subsequent fix cleanly applies to earlier kernels. The final patch takes care of a race in the control IO code that causes qeth to miss the cmd response, and subsequently trigger device recovery. ==================== Signed-off-by: -
Julian Wiedmann authored
If multiple IPA commands are build & sent out concurrently, fill_ipacmd_header() may assign a seqno value to a command that's different from what send_control_data() later assigns to this command's reply. This is due to other commands passing through send_control_data(), and incrementing card->seqno.ipa along the way. So one IPA command has no reply that's waiting for its seqno, while some other IPA command has multiple reply objects waiting for it. Only one of those waiting replies wins, and the other(s) times out and triggers a recovery via send_ipa_cmd(). Fix this by making sure that the same seqno value is assigned to a command and its reply object. Do so immediately before submitting the command & while holding the irq_pending "lock", to produce nicely ascending seqnos. As a side effect, *all* IPA commands now use a reply object that's waiting for its actual seqno. Previously, early IPA commands that were submitted while the card was still DOWN used the "catch-all" IDX seqno. Signed-off-by:
Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by:
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Julian Wiedmann authored
Current code ("qeth_l3_ip_from_hash()") matches a queried address object against objects in the IP table by IP address, Mask/Prefix Length and MAC address ("qeth_l3_ipaddrs_is_equal()"). But what callers actually require is either a) "is this IP address registered" (ie. match by IP address only), before adding a new address. b) or "is this address object registered" (ie. match all relevant attributes), before deleting an address. Right now 1. the ADD path is too strict in its lookup, and eg. doesn't detect conflicts between an existing NORMAL address and a new VIPA address (because the NORMAL address will have mask != 0, while VIPA has a mask == 0), 2. the DELETE path is not strict enough, and eg. allows del_rxip() to delete a VIPA address as long as the IP address matches. Fix all this by adding helpers (_addr_match_ip() and _addr_match_all()) that do the appropriate checking. Note that the ADD path for NORMAL addresses is special, as qeth keeps track of how many times such an address is in use (and there is no immediate way of returning errors to the caller). So when a requested NORMAL address _fully_ matches an existing one, it's not considered a conflict and we merely increment the refcount. Fixes: 5f78e29c ("qeth: optimize IP handling in rx_mode callback") Signed-off-by: -
Julian Wiedmann authored
This reverts commit cb816192. The issue this attempted to fix never actually occurs. l3_add_rxip() checks (via l3_ip_from_hash()) if the requested address was previously added to the card. If so, it returns -EEXIST and doesn't call l3_add_ip(). As a result, the "address exists" path in l3_add_ip() is never taken for rxip addresses, and this patch had no effect. Fixes: cb816192 ("s390/qeth: fix using of ref counter for rxip addresses") Signed-off-by:
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Julian Wiedmann authored
Registering an IPv4 address with the HW takes quite a while, so we temporarily drop the ip_htable lock. Any concurrent add/remove of the same IP adjusts the IP's use count, and (on remove) is then blocked by addr->in_progress. After the register call has completed, we check the use count for concurrently attempted add/remove calls - and possibly straight-away deregister the IP again. This happens via l3_delete_ip(), which 1) looks up the queried IP in the htable (getting a reference to the *same* queried object), 2) deregisters the IP from the HW, and 3) frees the IP object. The caller in l3_add_ip() then does a second free on the same object. For this case, skip all the extra checks and lookups in l3_delete_ip() and just deregister & free the IP object ourselves. Fixes: 5f78e29c ("qeth: optimize IP handling in rx_mode callback") Signed-off-by:
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Julian Wiedmann authored
If the HW is not reachable, then none of the IPs in qeth's internal table has been registered with the HW yet. So when deleting such an IP, there's no need to stage it for deregistration - just drop it from the table. This fixes the "add-delete-add" scenario on an offline card, where the the second "add" merely increments the IP's use count. But as the IP is still set to DISP_ADDR_DELETE from the previous "delete" step, l3_recover_ip() won't register it with the HW when the card goes online. Fixes: 5f78e29c ("qeth: optimize IP handling in rx_mode callback") Signed-off-by:
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Julian Wiedmann authored
qeth_get_elements_for_range() doesn't know how to handle a 0-length range (ie. start == end), and returns 1 when it should return 0. Such ranges occur on TSO skbs, where the L2/L3/L4 headers (and thus all of the skb's linear data) are skipped when mapping the skb into regular buffer elements. This overestimation may cause several performance-related issues: 1. sub-optimal IO buffer selection, where the next buffer gets selected even though the skb would actually still fit into the current buffer. 2. forced linearization, if the element count for a non-linear skb exceeds QETH_MAX_BUFFER_ELEMENTS. Rather than modifying qeth_get_elements_for_range() and adding overhead to every caller, fix up those callers that are in risk of passing a 0-length range. Fixes: 2863c613 ("qeth: refactor calculation of SBALE count") Signed-off-by:
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Claudiu Manoil authored
Don't include in the Rx bytecount of the packet sent up the stack: the FCB (frame control block), and the padding bytes inserted by the controller into the frame payload, nor the FCS. All these are being pulled out of the skb by gfar_process_frame(). This issue is old, likely from the driver's beginnings, however it was amplified by recent: commit d903ec77 ("gianfar: simplify FCS handling and fix memory leak") which basically added the FCS to the Rx bytecount, and so brought this to my attention. Signed-off-by:
Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by:
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- 27 Feb, 2018 3 commits
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Bassem Boubaker authored
The Cinterion PL8 is an LTE modem with 2 possible WWAN interfaces. The modem is controlled via AT commands through the exposed TTYs. AT^SWWAN write command can be used to activate or deactivate a WWAN connection for a PDP context defined with AT+CGDCONT. UE supports two WWAN adapter. Both WWAN adapters can be activated a the same time Signed-off-by:Bassem Boubaker <bassem.boubaker@actia.fr> Acked-by:
Oliver Neukum <oneukum@suse.com> Signed-off-by:
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Boris Pismenny authored
The tls ulp overrides sk->prot with a new tls specific proto structs. The tls specific structs were previously based on the ipv4 specific tcp_prot sturct. As a result, attaching the tls ulp to an ipv6 tcp socket replaced some ipv6 callback with the ipv4 equivalents. This patch adds ipv6 tls proto structs and uses them when attached to ipv6 sockets. Fixes: 3c4d7559 ('tls: kernel TLS support') Signed-off-by:
Boris Pismenny <borisp@mellanox.com> Signed-off-by:
Ilya Lesokhin <ilyal@mellanox.com> Signed-off-by:
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Sergei Shtylyov authored
We have uninlined the sh_eth_{read|write}() functions introduced in the commit 4a55530f ("net: sh_eth: modify the definitions of register"). Now remove *inline* from sh_eth_tsu_{read|write}() as well and move these functions from the header to the driver itself. This saves 684 more bytes of object code (ARM gcc 4.8.5)... Signed-off-by:Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by:
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