- 21 Oct, 2015 1 commit
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Jes Sorensen authored
This is an alternate driver for a number of Realtek WiFi USB devices, including RTL8723AU, RTL8188CU, RTL8188RU, RTL8191CU, and RTL8192CU. It was written from scratch utilizing the Linux mac80211 stack. After spending months cleaning up the vendor provided rtl8723au driver, which comes with it's own 802.11 stack included, I decided to rewrite this driver from the bottom up. Many thanks to Johannes Berg for 802.11 insights and help and Larry Finger for help with the vendor driver. The full git log for the development of this driver can be found here: git git://git.kernel.org/pub/scm/linux/kernel/git/jes/linux.git branch rtl8723au-mac80211 This driver is still under development, but has proven to be very stable for me. It currently supports station mode only. It has support for OFDM and CCK rates. It does lack certain features found in the staging driver, such as power management, AMPDU, and 40MHz channel support. In addition it does not support AD-HOC, AP, and monitor mode support at this point. The driver is known to work with the following devices: Lenovo Yoga (rtl8723au) TP-Link TL-WN823N (rtl8192cu) Etekcity 6R (rtl8188cu) Daffodil LAN03 (rtl8188cu) Alfa AWUS036NHR (rtl8188ru) Signed-off-by:
Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org>
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- 14 Oct, 2015 12 commits
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Xinming Hu authored
ra_list cannot be NULL here, so remove the unnecessary NULL check. Signed-off-by:
Xinming Hu <huxm@marvell.com> Signed-off-by:
Amitkumar Karwar <akarwar@marvell.com> Signed-off-by:
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Amitkumar Karwar authored
ndo_validate_addr is set to generic eth_validate_addr() function used for MAC address validation. Signed-off-by:
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Ganapathi Bhat authored
Even if hostapd configuration file contains VHT parameters, they were not getting reflected in beacons. The reason is we are resetting them before starting AP. This patch removes redundant BSS_STOP and SYS_RESET firmware commands before starting AP to fix the problem. Signed-off-by:
Ganapathi Bhat <gbhat@marvell.com> Signed-off-by:
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Amitkumar Karwar authored
By default our chip will be in spatial coexistence mode. This patch adds a provision to change it to timeshare mode via debugfs command. Enable timeshare coexistence mode echo 1 > /sys/kernel/debug/mwifiex/mlan0/timeshare_coex Go back to spacial coexistence mode echo 0 > /sys/kernel/debug/mwifiex/mlan0/timeshare_coex Signed-off-by:
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Geliang Tang authored
Just fix a typo in the code comment. Signed-off-by:
Geliang Tang <geliangtang@163.com> Acked-by:
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Miaoqing Pan authored
A small bugfix for commit ede6a5e7 ("ath9k: Add QCA956x HW support"). I guess I would have skipped renaming (that initial QCA956x commit has been there already for almost a year with the "5g" in the name) and move the call outside AR_SREV_9462_20_OR_LATER() to make it reachable. Signed-off-by:
Miaoqing Pan <miaoqing@codeaurora.org> Signed-off-by:
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Miaoqing Pan authored
rename the variable as preparation for using the array with 2.4 GHz band, etc. Signed-off-by:
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Priit Laes authored
Driver was reporting 'switch case not processed' after association, so HW_VAR_KEEP_ALIVE was added and filled similarily to other drivers. Positive side effect to this seems to be a bit more stable connection. Signed-off-by:
Priit Laes <plaes@plaes.org> Acked-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
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Amitkumar Karwar authored
For 8897 chipset, mwifiex_usb unnecessarily used to come into picture when wlan is supposed to be used via PCIe interface and USB interface is for bluetooth. This problem has been resolved for newer chipset by having separate USB product ids for USB-USB8997 and PCIe-USB8997 chipset variants. This patch ensures to use wlan specific product id. Signed-off-by:
Frank Huang <frankh@marvell.com> Signed-off-by:
Nishant Sarmukadam <nishants@marvell.com> Signed-off-by:
Cathy Luo <cluo@marvell.com> Signed-off-by:
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Amitkumar Karwar authored
We don't have any customer using this chipset via USB interface. if both mwifiex_pcie and mwifiex_usb modules are enabled by user, sometimes mwifiex_usb wins the race even if user wants wlan interface to be on PCIe and USB for bluetooth. This patch solves the problem. Signed-off-by:
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Martin Blumenstingl authored
The FreeBSD driver [0] uses the same 2G values as for the AR9280 chips. Using the same values in ath9k results in much better throughput for me. Before this patch I had a huge amount of packet loss (sometimes up to 40%) and the max transfer speed was somewhere around 5Mbit/s. With this patch applied I have zero packet loss and ten times the throughput. My device uses a AR9227 which is the PCI variant of the AR9287. [0] http://bxr.su/FreeBSD/sys/dev/ath/ath_hal/ar9002/ar9287.hSigned-off-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by:
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Larry Finger authored
Now that a new mac80211-based driver for Realtek devices has been submitted, it is time to reorganize the directories. Rather than having directories rtlwifi and rtl818x be in drivers/net/wireless/, they will now be in drivers/net/wireless/realtek/. This change simplifies the directory structure, but does not result in any configuration changes that are visable to the user. Signed-off-by:
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- 13 Oct, 2015 26 commits
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Nikolay Aleksandrov authored
Currently it's possible for someone to send a vlan range to the kernel with the pvid flag set which will result in the pvid bouncing from a vlan to vlan and isn't correct, it also introduces problems for hardware where it doesn't make sense having more than 1 pvid. iproute2 already enforces this, so let's enforce it on kernel-side as well. Reported-by:
Elad Raz <eladr@mellanox.com> Signed-off-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Acked-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Tillmann Heidsieck authored
Fix a smatch warning: drivers/atm/iphase.c:1178 rx_pkt() warn: curly braces intended? The code is correct, the indention is misleading. In case the allocation of skb fails, we want to skip to the end. Signed-off-by:
Tillmann Heidsieck <theidsieck@leenox.de> Signed-off-by:
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Tillmann Heidsieck authored
Smatch complains about returning hard coded error codes, silence this warning. drivers/atm/iphase.c:115 ia_enque_rtn_q() warn: returning -1 instead of -ENOMEM is sloppy Signed-off-by:
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Roopa Prabhu authored
This patch makes ip6_route_info_create return err pointer instead of returning the rt pointer by reference as suggested by Dave Signed-off-by:
Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by:
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huangdaode authored
This patch fix the building error reported by Jiri Pirko <jiri@resnulli.us> drivers/net/ethernet/hisilicon/hns/hnae.h:465:2: error: unknown type name 'phy_interface_t' phy_interface_t phy_if; ^ the full build log is on https://lists.01.org/pipermail/kbuild-all. Signed-off-by:huangdaode <huangdaode@hisilicon.com> Signed-off-by:
yankejian <yankejian@huawei.com> Reviewed-by:
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Eric Dumazet authored
timewait or request sockets are small and do not contain sk->sk_tsflags Without this fix, we might read garbage, and crash later in __skb_complete_tx_timestamp() -> sock_queue_err_skb() (These pseudo sockets do not have an error queue either) Fixes: ca6fb065 ("tcp: attach SYNACK messages to request sockets instead of listener") Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Willem de Bruijn <willemb@google.com> Acked-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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David S. Miller authored
Eric W. Biederman says: ==================== net: Pass net into defragmentation This is the next installment of my work to pass struct net through the output path so the code does not need to guess how to figure out which network namespace it is in, and ultimately routes can have output devices in another network namespace. In netfilter and af_packet we defragment packets in the output path, and there is the usual amount of confusion about how to compute which net we are processing the packets in. This patchset clears that confusion up by explicitly passing in struct net in ip_defrag, ip_check_defrag, and nf_ct_frag6_gather. ==================== Signed-off-by: -
Eric W. Biederman authored
The function nf_ct_frag6_gather is called on both the input and the output paths of the networking stack. In particular ipv6_defrag which calls nf_ct_frag6_gather is called from both the the PRE_ROUTING chain on input and the LOCAL_OUT chain on output. The addition of a net parameter makes it explicit which network namespace the packets are being reassembled in, and removes the need for nf_ct_frag6_gather to guess. Signed-off-by:
"Eric W. Biederman" <ebiederm@xmission.com> Acked-by:
Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by:
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Eric W. Biederman authored
The function ip_defrag is called on both the input and the output paths of the networking stack. In particular conntrack when it is tracking outbound packets from the local machine calls ip_defrag. So add a struct net parameter and stop making ip_defrag guess which network namespace it needs to defragment packets in. Signed-off-by:
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Eric W. Biederman authored
ip_call_ra_chain is called early in the forwarding chain from ip_forward and ip_mr_input, which makes skb->dev the correct expression to get the input network device and dev_net(skb->dev) a correct expression for the network namespace the packet is being processed in. Compute the network namespace and store it in a variable to make the code clearer. Signed-off-by:
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Eric Dumazet authored
Recent TCP listener patches exposed a prior af_packet bug : match_fanout_group() blindly assumes it is always safe to cast sk to a packet socket to compare fanout with af_packet_priv But SYNACK packets can be sent while attached to request_sock, which are smaller than a "struct sock". We can read non existent memory and crash. Fixes: c0de08d0 ("af_packet: don't emit packet on orig fanout group") Fixes: ca6fb065 ("tcp: attach SYNACK messages to request sockets instead of listener") Signed-off-by:
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David S. Miller authored
Merge tag 'wireless-drivers-next-for-davem-2015-10-09' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Kalle Valo says: ==================== Major changes: iwlwifi * some debugfs improvements * fix signedness in beacon statistics * deinline some functions to reduce size when device tracing is enabled * filter beacons out in AP mode when no stations are associated * deprecate firmwares version -12 * fix a runtime PM vs. legacy suspend race * one-liner fix for a ToF bug * clean-ups in the rx code * small debugging improvement * fix WoWLAN with new firmware versions * more clean-ups towards multiple RX queues; * some rate scaling fixes and improvements; * some time-of-flight fixes; * other generic improvements and clean-ups; brcmfmac * rework code dealing with multiple interfaces * allow logging firmware console using debug level * support for BCM4350, BCM4365, and BCM4366 PCIE devices * fixed for legacy P2P and P2P device handling * correct set and get tx-power ath9k * add support for Outside Context of a BSS (OCB) mode mwifiex * add USB multichannel feature ==================== Signed-off-by:
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Paolo Abeni authored
This patch allows configuring how the source address of ICMP redirect messages is selected; by default the old behaviour is retained, while setting icmp_redirects_use_orig_daddr force the usage of the destination address of the packet that caused the redirect. The new behaviour fits closely the RFC 5798 section 8.1.1, and fix the following scenario: Two machines are set up with VRRP to act as routers out of a subnet, they have IPs x.x.x.1/24 and x.x.x.2/24, with VRRP holding on to x.x.x.254/24. If a host in said subnet needs to get an ICMP redirect from the VRRP router, i.e. to reach a destination behind a different gateway, the source IP in the ICMP redirect is chosen as the primary IP on the interface that the packet arrived at, i.e. x.x.x.1 or x.x.x.2. The host will then ignore said redirect, due to RFC 1122 section 3.2.2.2, and will continue to use the wrong next-op. Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
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Jiri Pirko authored
Some drivers need to implement both switchdev vlan ops and vid_add/kill ndos. For that to work in bridge code, we need to try switchdev op first when adding/deleting vlan id. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Acked-by:
Scott Feldman <sfeldma@gmail.com> Signed-off-by:
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wangweidong authored
In bnx2_init_board, missing free temp_stats_blk on error path when some operations do failed. Just add the 'kfree' operation. Signed-off-by:
Wang Weidong <wangweidong1@huawei.com> Signed-off-by:
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David S. Miller authored
Eric Dumazet says: ==================== tcp: better smp listener behavior As promised in last patch series, we implement a better SO_REUSEPORT strategy, based on cpu hints if given by the application. We also moved sk_refcnt out of the cache line containing the lookup keys, as it was considerably slowing down smp operations because of false sharing. This was simpler than converting listen sockets to conventional RCU (to avoid sk_refcnt dirtying) Could process 6.0 Mpps SYN instead of 4.2 Mpps on my test server. ==================== Signed-off-by: -
Eric Dumazet authored
Reducing tcp_timewait_sock from 280 bytes to 272 bytes allows SLAB to pack 15 objects per page instead of 14 (on x86) Signed-off-by:
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Eric Dumazet authored
One 32bit hole is following skc_refcnt, use it. skc_incoming_cpu can also be an union for request_sock rcv_wnd. Signed-off-by:
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Eric Dumazet authored
sk->sk_refcnt is dirtied for every TCP/UDP incoming packet. This is a performance issue if multiple cpus hit a common socket, or multiple sockets are chained due to SO_REUSEPORT. By moving sk_refcnt 8 bytes further, first 128 bytes of sockets are mostly read. As they contain the lookup keys, this has a considerable performance impact, as cpus can cache them. These 8 bytes are not wasted, we use them as a place holder for various fields, depending on the socket type. Tested: SYN flood hitting a 16 RX queues NIC. TCP listener using 16 sockets and SO_REUSEPORT and SO_INCOMING_CPU for proper siloing. Could process 6.0 Mpps SYN instead of 4.2 Mpps Kernel profile looked like : 11.68% [kernel] [k] sha_transform 6.51% [kernel] [k] __inet_lookup_listener 5.07% [kernel] [k] __inet_lookup_established 4.15% [kernel] [k] memcpy_erms 3.46% [kernel] [k] ipt_do_table 2.74% [kernel] [k] fib_table_lookup 2.54% [kernel] [k] tcp_make_synack 2.34% [kernel] [k] tcp_conn_request 2.05% [kernel] [k] __netif_receive_skb_core 2.03% [kernel] [k] kmem_cache_alloc Signed-off-by: -
Eric Dumazet authored
SO_INCOMING_CPU as added in commit 2c8c56e1 was a getsockopt() command to fetch incoming cpu handling a particular TCP flow after accept() This commits adds setsockopt() support and extends SO_REUSEPORT selection logic : If a TCP listener or UDP socket has this option set, a packet is delivered to this socket only if CPU handling the packet matches the specified one. This allows to build very efficient TCP servers, using one listener per RX queue, as the associated TCP listener should only accept flows handled in softirq by the same cpu. This provides optimal NUMA behavior and keep cpu caches hot. Note that __inet_lookup_listener() still has to iterate over the list of all listeners. Following patch puts sk_refcnt in a different cache line to let this iteration hit only shared and read mostly cache lines. Signed-off-by:
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Edward Jee authored
Signed-off-by:
Edward Hyunkoo Jee <edjee@google.com> Signed-off-by:
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Edward Jee authored
It's useful to allow users to set fwmark for an individual packet, without changing the socket state. The function this patch adds in sock layer can be used by the protocols that need such a feature. Signed-off-by:
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David S. Miller authored
Alexei Starovoitov says: ==================== bpf: unprivileged v1-v2: - this set logically depends on cb patch "bpf: fix cb access in socket filter programs": http://patchwork.ozlabs.org/patch/527391/ which is must have to allow unprivileged programs. Thanks Daniel for finding that issue. - refactored sysctl to be similar to 'modules_disabled' - dropped bpf_trace_printk - split tests into separate patch and added more tests based on discussion v1 cover letter: I think it is time to liberate eBPF from CAP_SYS_ADMIN. As was discussed when eBPF was first introduced two years ago the only piece missing in eBPF verifier is 'pointer leak detection' to make it available to non-root users. Patch 1 adds this pointer analysis. The eBPF programs, obviously, need to see and operate on kernel addresses, but with these extra checks they won't be able to pass these addresses to user space. Patch 2 adds accounting of kernel memory used by programs and maps. It changes behavoir for existing root users, but I think it needs to be done consistently for both root and non-root, since today programs and maps are only limited by number of open FDs (RLIMIT_NOFILE). Patch 2 accounts program's and map's kernel memory as RLIMIT_MEMLOCK. Unprivileged eBPF is only meaningful for 'socket filter'-like programs. eBPF programs for tracing and TC classifiers/actions will stay root only. In parallel the bpf fuzzing effort is ongoing and so far we've found only one verifier bug and that was already fixed. The 'constant blinding' pass also being worked on. It will obfuscate constant-like values that are part of eBPF ISA to make jit spraying attacks even harder. ==================== Signed-off-by:
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Alexei Starovoitov authored
Add new tests samples/bpf/test_verifier: unpriv: return pointer checks that pointer cannot be returned from the eBPF program unpriv: add const to pointer unpriv: add pointer to pointer unpriv: neg pointer checks that pointer arithmetic is disallowed unpriv: cmp pointer with const unpriv: cmp pointer with pointer checks that comparison of pointers is disallowed Only one case allowed 'void *value = bpf_map_lookup_elem(..); if (value == 0) ...' unpriv: check that printk is disallowed since bpf_trace_printk is not available to unprivileged unpriv: pass pointer to helper function checks that pointers cannot be passed to functions that expect integers If function expects a pointer the verifier allows only that type of pointer. Like 1st argument of bpf_map_lookup_elem() must be pointer to map. (applies to non-root as well) unpriv: indirectly pass pointer on stack to helper function checks that pointer stored into stack cannot be used as part of key passed into bpf_map_lookup_elem() unpriv: mangle pointer on stack 1 unpriv: mangle pointer on stack 2 checks that writing into stack slot that already contains a pointer is disallowed unpriv: read pointer from stack in small chunks checks that < 8 byte read from stack slot that contains a pointer is disallowed unpriv: write pointer into ctx checks that storing pointers into skb->fields is disallowed unpriv: write pointer into map elem value checks that storing pointers into element values is disallowed For example: int bpf_prog(struct __sk_buff *skb) { u32 key = 0; u64 *value = bpf_map_lookup_elem(&map, &key); if (value) *value = (u64) skb; } will be rejected. unpriv: partial copy of pointer checks that doing 32-bit register mov from register containing a pointer is disallowed unpriv: pass pointer to tail_call checks that passing pointer as an index into bpf_tail_call is disallowed unpriv: cmp map pointer with zero checks that comparing map pointer with constant is disallowed unpriv: write into frame pointer checks that frame pointer is read-only (applies to root too) unpriv: cmp of frame pointer checks that R10 cannot be using in comparison unpriv: cmp of stack pointer checks that Rx = R10 - imm is ok, but comparing Rx is not unpriv: obfuscate stack pointer checks that Rx = R10 - imm is ok, but Rx -= imm is not Signed-off-by:Alexei Starovoitov <ast@plumgrid.com> Signed-off-by:
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Alexei Starovoitov authored
since eBPF programs and maps use kernel memory consider it 'locked' memory from user accounting point of view and charge it against RLIMIT_MEMLOCK limit. This limit is typically set to 64Kbytes by distros, so almost all bpf+tracing programs would need to increase it, since they use maps, but kernel charges maximum map size upfront. For example the hash map of 1024 elements will be charged as 64Kbyte. It's inconvenient for current users and changes current behavior for root, but probably worth doing to be consistent root vs non-root. Similar accounting logic is done by mmap of perf_event. Signed-off-by:
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Alexei Starovoitov authored
In order to let unprivileged users load and execute eBPF programs teach verifier to prevent pointer leaks. Verifier will prevent - any arithmetic on pointers (except R10+Imm which is used to compute stack addresses) - comparison of pointers (except if (map_value_ptr == 0) ... ) - passing pointers to helper functions - indirectly passing pointers in stack to helper functions - returning pointer from bpf program - storing pointers into ctx or maps Spill/fill of pointers into stack is allowed, but mangling of pointers stored in the stack or reading them byte by byte is not. Within bpf programs the pointers do exist, since programs need to be able to access maps, pass skb pointer to LD_ABS insns, etc but programs cannot pass such pointer values to the outside or obfuscate them. Only allow BPF_PROG_TYPE_SOCKET_FILTER unprivileged programs, so that socket filters (tcpdump), af_packet (quic acceleration) and future kcm can use it. tracing and tc cls/act program types still require root permissions, since tracing actually needs to be able to see all kernel pointers and tc is for root only. For example, the following unprivileged socket filter program is allowed: int bpf_prog1(struct __sk_buff *skb) { u32 index = load_byte(skb, ETH_HLEN + offsetof(struct iphdr, protocol)); u64 *value = bpf_map_lookup_elem(&my_map, &index); if (value) *value += skb->len; return 0; } but the following program is not: int bpf_prog1(struct __sk_buff *skb) { u32 index = load_byte(skb, ETH_HLEN + offsetof(struct iphdr, protocol)); u64 *value = bpf_map_lookup_elem(&my_map, &index); if (value) *value += (u64) skb; return 0; } since it would leak the kernel address into the map. Unprivileged socket filter bpf programs have access to the following helper functions: - map lookup/update/delete (but they cannot store kernel pointers into them) - get_random (it's already exposed to unprivileged user space) - get_smp_processor_id - tail_call into another socket filter program - ktime_get_ns The feature is controlled by sysctl kernel.unprivileged_bpf_disabled. This toggle defaults to off (0), but can be set true (1). Once true, bpf programs and maps cannot be accessed from unprivileged process, and the toggle cannot be set back to false. Signed-off-by:Kees Cook <keescook@chromium.org> Signed-off-by:
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- 12 Oct, 2015 1 commit
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Arnd Bergmann authored
The newly introduced HNS_MDIO Kconfig symbol selects 'MDIO', but that is the wrong symbol as the code used by this driver is provided by PHYLIB rather than the MDIO driver. Also, there is no need to make this driver user selectable, because it is already selected by all drivers that need it. This changes the Kconfig file to select the correct library, and to make the option silent. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Fixes: 5b904d39 ("net: add Hisilicon Network Subsystem MDIO support") Signed-off-by:
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