David Howells [Fri, 21 Jul 2017 09:07:10 +0000 (10:07 +0100)]
rxrpc: Move the packet.h include file into net/rxrpc/
Move the protocol description header file into net/rxrpc/ and rename it to
protocol.h. It's no longer necessary to expose it as packets are no longer
exposed to kernel services (such as AFS) that use the facility.
The abort codes are transferred to the UAPI header instead as we pass these
back to userspace and also to kernel services.
Signed-off-by: David Howells <dhowells@redhat.com>
David Howells [Fri, 21 Jul 2017 09:39:26 +0000 (10:39 +0100)]
rxrpc: Expose UAPI definitions to userspace
Move UAPI definitions from the internal header and place them in a UAPI
header file so that userspace can make use of them.
Signed-off-by: David Howells <dhowells@redhat.com>
David S. Miller [Fri, 21 Jul 2017 02:38:43 +0000 (03:38 +0100)]
Merge git://git./linux/kernel/git/davem/net
Linus Torvalds [Thu, 20 Jul 2017 23:33:39 +0000 (16:33 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) BPF verifier signed/unsigned value tracking fix, from Daniel
Borkmann, Edward Cree, and Josef Bacik.
2) Fix memory allocation length when setting up calls to
->ndo_set_mac_address, from Cong Wang.
3) Add a new cxgb4 device ID, from Ganesh Goudar.
4) Fix FIB refcount handling, we have to set it's initial value before
the configure callback (which can bump it). From David Ahern.
5) Fix double-free in qcom/emac driver, from Timur Tabi.
6) A bunch of gcc-7 string format overflow warning fixes from Arnd
Bergmann.
7) Fix link level headroom tests in ip_do_fragment(), from Vasily
Averin.
8) Fix chunk walking in SCTP when iterating over error and parameter
headers. From Alexander Potapenko.
9) TCP BBR congestion control fixes from Neal Cardwell.
10) Fix SKB fragment handling in bcmgenet driver, from Doug Berger.
11) BPF_CGROUP_RUN_PROG_SOCK_OPS needs to check for null __sk, from Cong
Wang.
12) xmit_recursion in ppp driver needs to be per-device not per-cpu,
from Gao Feng.
13) Cannot release skb->dst in UDP if IP options processing needs it.
From Paolo Abeni.
14) Some netdev ioctl ifr_name[] NULL termination fixes. From Alexander
Levin and myself.
15) Revert some rtnetlink notification changes that are causing
regressions, from David Ahern.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (83 commits)
net: bonding: Fix transmit load balancing in balance-alb mode
rds: Make sure updates to cp_send_gen can be observed
net: ethernet: ti: cpsw: Push the request_irq function to the end of probe
ipv4: initialize fib_trie prior to register_netdev_notifier call.
rtnetlink: allocate more memory for dev_set_mac_address()
net: dsa: b53: Add missing ARL entries for BCM53125
bpf: more tests for mixed signed and unsigned bounds checks
bpf: add test for mixed signed and unsigned bounds checks
bpf: fix up test cases with mixed signed/unsigned bounds
bpf: allow to specify log level and reduce it for test_verifier
bpf: fix mixed signed/unsigned derived min/max value bounds
ipv6: avoid overflow of offset in ip6_find_1stfragopt
net: tehuti: don't process data if it has not been copied from userspace
Revert "rtnetlink: Do not generate notifications for CHANGEADDR event"
net: dsa: mv88e6xxx: Enable CMODE config support for 6390X
dt-binding: ptp: Add SoC compatibility strings for dte ptp clock
NET: dwmac: Make dwmac reset unconditional
net: Zero terminate ifr_name in dev_ifname().
wireless: wext: terminate ifr name coming from userspace
netfilter: fix netfilter_net_init() return
...
Kosuke Tatsukawa [Thu, 20 Jul 2017 05:20:40 +0000 (05:20 +0000)]
net: bonding: Fix transmit load balancing in balance-alb mode
balance-alb mode used to have transmit dynamic load balancing feature
enabled by default. However, transmit dynamic load balancing no longer
works in balance-alb after commit
8b426dc54cf4 ("bonding: remove
hardcoded value").
Both balance-tlb and balance-alb use the function bond_do_alb_xmit() to
send packets. This function uses the parameter tlb_dynamic_lb.
tlb_dynamic_lb used to have the default value of 1 for balance-alb, but
now the value is set to 0 except in balance-tlb.
Re-enable transmit dyanmic load balancing by initializing tlb_dynamic_lb
for balance-alb similar to balance-tlb.
Fixes:
8b426dc54cf4 ("bonding: remove hardcoded value")
Signed-off-by: Kosuke Tatsukawa <tatsu@ab.jp.nec.com>
Acked-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Håkon Bugge [Thu, 20 Jul 2017 10:28:55 +0000 (12:28 +0200)]
rds: Make sure updates to cp_send_gen can be observed
cp->cp_send_gen is treated as a normal variable, although it may be
used by different threads.
This is fixed by using {READ,WRITE}_ONCE when it is incremented and
READ_ONCE when it is read outside the {acquire,release}_in_xmit
protection.
Normative reference from the Linux-Kernel Memory Model:
Loads from and stores to shared (but non-atomic) variables should
be protected with the READ_ONCE(), WRITE_ONCE(), and
ACCESS_ONCE().
Clause 5.1.2.4/25 in the C standard is also relevant.
Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Reviewed-by: Knut Omang <knut.omang@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ganesh Goudar [Thu, 20 Jul 2017 12:58:48 +0000 (18:28 +0530)]
cxgb4: display serial config and vpd versions
print the versions of vpd and serial configuration file,
flashed to adapter, and cleanup the relevant code.
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Keerthy [Thu, 20 Jul 2017 11:29:52 +0000 (16:59 +0530)]
net: ethernet: ti: cpsw: Push the request_irq function to the end of probe
Push the request_irq function to the end of probe so as
to ensure all the required fields are populated in the event
of an ISR getting executed right after requesting the irq.
Currently while loading the crash kernel a crash was seen as
soon as devm_request_threaded_irq was called. This was due to
n->poll being NULL which is called as part of net_rx_action
function.
Suggested-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mahesh Bandewar [Wed, 19 Jul 2017 22:41:33 +0000 (15:41 -0700)]
ipv4: initialize fib_trie prior to register_netdev_notifier call.
Net stack initialization currently initializes fib-trie after the
first call to netdevice_notifier() call. In fact fib_trie initialization
needs to happen before first rtnl_register(). It does not cause any problem
since there are no devices UP at this moment, but trying to bring 'lo'
UP at initialization would make this assumption wrong and exposes the issue.
Fixes following crash
Call Trace:
? alternate_node_alloc+0x76/0xa0
fib_table_insert+0x1b7/0x4b0
fib_magic.isra.17+0xea/0x120
fib_add_ifaddr+0x7b/0x190
fib_netdev_event+0xc0/0x130
register_netdevice_notifier+0x1c1/0x1d0
ip_fib_init+0x72/0x85
ip_rt_init+0x187/0x1e9
ip_init+0xe/0x1a
inet_init+0x171/0x26c
? ipv4_offload_init+0x66/0x66
do_one_initcall+0x43/0x160
kernel_init_freeable+0x191/0x219
? rest_init+0x80/0x80
kernel_init+0xe/0x150
ret_from_fork+0x22/0x30
Code: f6 46 23 04 74 86 4c 89 f7 e8 ae 45 01 00 49 89 c7 4d 85 ff 0f 85 7b ff ff ff 31 db eb 08 4c 89 ff e8 16 47 01 00 48 8b 44 24 38 <45> 8b 6e 14 4d 63 76 74 48 89 04 24 0f 1f 44 00 00 48 83 c4 08
RIP: kmem_cache_alloc+0xcf/0x1c0 RSP:
ffff9b1500017c28
CR2:
0000000000000014
Fixes:
7b1a74fdbb9e ("[NETNS]: Refactor fib initialization so it can handle multiple namespaces.")
Fixes:
7f9b80529b8a ("[IPV4]: fib hash|trie initialization")
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
WANG Cong [Thu, 20 Jul 2017 18:27:57 +0000 (11:27 -0700)]
rtnetlink: allocate more memory for dev_set_mac_address()
virtnet_set_mac_address() interprets mac address as struct
sockaddr, but upper layer only allocates dev->addr_len
which is ETH_ALEN + sizeof(sa_family_t) in this case.
We lack a unified definition for mac address, so just fix
the upper layer, this also allows drivers to interpret it
to struct sockaddr freely.
Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Thu, 20 Jul 2017 19:25:22 +0000 (12:25 -0700)]
net: dsa: b53: Add missing ARL entries for BCM53125
The BCM53125 entry was missing an arl_entries member which would
basically prevent the ARL search from terminating properly. This switch
has 4 ARL entries, so add that.
Fixes:
1da6df85c6fb ("net: dsa: b53: Implement ARL add/del/dump operations")
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>
David S. Miller [Thu, 20 Jul 2017 22:20:28 +0000 (15:20 -0700)]
Merge branch 'BPF-map-value-adjust-fix'
Daniel Borkmann says:
====================
BPF map value adjust fix
First patch in the series is the actual fix and the remaining
patches are just updates to selftests.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 20 Jul 2017 22:00:25 +0000 (00:00 +0200)]
bpf: more tests for mixed signed and unsigned bounds checks
Add a couple of more test cases to BPF selftests that are related
to mixed signed and unsigned checks.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Edward Cree [Thu, 20 Jul 2017 22:00:24 +0000 (00:00 +0200)]
bpf: add test for mixed signed and unsigned bounds checks
These failed due to a bug in verifier bounds handling.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 20 Jul 2017 22:00:23 +0000 (00:00 +0200)]
bpf: fix up test cases with mixed signed/unsigned bounds
Fix the few existing test cases that used mixed signed/unsigned
bounds and switch them only to one flavor. Reason why we need this
is that proper boundaries cannot be derived from mixed tests.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 20 Jul 2017 22:00:22 +0000 (00:00 +0200)]
bpf: allow to specify log level and reduce it for test_verifier
For the test_verifier case, it's quite hard to parse log level 2 to
figure out what's causing an issue when used to log level 1. We do
want to use bpf_verify_program() in order to simulate some of the
tests with strict alignment. So just add an argument to pass the level
and put it to 1 for test_verifier.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 20 Jul 2017 22:00:21 +0000 (00:00 +0200)]
bpf: fix mixed signed/unsigned derived min/max value bounds
Edward reported that there's an issue in min/max value bounds
tracking when signed and unsigned compares both provide hints
on limits when having unknown variables. E.g. a program such
as the following should have been rejected:
0: (7a) *(u64 *)(r10 -8) = 0
1: (bf) r2 = r10
2: (07) r2 += -8
3: (18) r1 = 0xffff8a94cda93400
5: (85) call bpf_map_lookup_elem#1
6: (15) if r0 == 0x0 goto pc+7
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R10=fp
7: (7a) *(u64 *)(r10 -16) = -8
8: (79) r1 = *(u64 *)(r10 -16)
9: (b7) r2 = -1
10: (2d) if r1 > r2 goto pc+3
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R1=inv,min_value=0
R2=imm-1,max_value=
18446744073709551615,min_align=1 R10=fp
11: (65) if r1 s> 0x1 goto pc+2
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R1=inv,min_value=0,max_value=1
R2=imm-1,max_value=
18446744073709551615,min_align=1 R10=fp
12: (0f) r0 += r1
13: (72) *(u8 *)(r0 +0) = 0
R0=map_value_adj(ks=8,vs=8,id=0),min_value=0,max_value=1 R1=inv,min_value=0,max_value=1
R2=imm-1,max_value=
18446744073709551615,min_align=1 R10=fp
14: (b7) r0 = 0
15: (95) exit
What happens is that in the first part ...
8: (79) r1 = *(u64 *)(r10 -16)
9: (b7) r2 = -1
10: (2d) if r1 > r2 goto pc+3
... r1 carries an unsigned value, and is compared as unsigned
against a register carrying an immediate. Verifier deduces in
reg_set_min_max() that since the compare is unsigned and operation
is greater than (>), that in the fall-through/false case, r1's
minimum bound must be 0 and maximum bound must be r2. Latter is
larger than the bound and thus max value is reset back to being
'invalid' aka BPF_REGISTER_MAX_RANGE. Thus, r1 state is now
'R1=inv,min_value=0'. The subsequent test ...
11: (65) if r1 s> 0x1 goto pc+2
... is a signed compare of r1 with immediate value 1. Here,
verifier deduces in reg_set_min_max() that since the compare
is signed this time and operation is greater than (>), that
in the fall-through/false case, we can deduce that r1's maximum
bound must be 1, meaning with prior test, we result in r1 having
the following state: R1=inv,min_value=0,max_value=1. Given that
the actual value this holds is -8, the bounds are wrongly deduced.
When this is being added to r0 which holds the map_value(_adj)
type, then subsequent store access in above case will go through
check_mem_access() which invokes check_map_access_adj(), that
will then probe whether the map memory is in bounds based
on the min_value and max_value as well as access size since
the actual unknown value is min_value <= x <= max_value; commit
fce366a9dd0d ("bpf, verifier: fix alu ops against map_value{,
_adj} register types") provides some more explanation on the
semantics.
It's worth to note in this context that in the current code,
min_value and max_value tracking are used for two things, i)
dynamic map value access via check_map_access_adj() and since
commit
06c1c049721a ("bpf: allow helpers access to variable memory")
ii) also enforced at check_helper_mem_access() when passing a
memory address (pointer to packet, map value, stack) and length
pair to a helper and the length in this case is an unknown value
defining an access range through min_value/max_value in that
case. The min_value/max_value tracking is /not/ used in the
direct packet access case to track ranges. However, the issue
also affects case ii), for example, the following crafted program
based on the same principle must be rejected as well:
0: (b7) r2 = 0
1: (bf) r3 = r10
2: (07) r3 += -512
3: (7a) *(u64 *)(r10 -16) = -8
4: (79) r4 = *(u64 *)(r10 -16)
5: (b7) r6 = -1
6: (2d) if r4 > r6 goto pc+5
R1=ctx R2=imm0,min_value=0,max_value=0,min_align=
2147483648 R3=fp-512
R4=inv,min_value=0 R6=imm-1,max_value=
18446744073709551615,min_align=1 R10=fp
7: (65) if r4 s> 0x1 goto pc+4
R1=ctx R2=imm0,min_value=0,max_value=0,min_align=
2147483648 R3=fp-512
R4=inv,min_value=0,max_value=1 R6=imm-1,max_value=
18446744073709551615,min_align=1
R10=fp
8: (07) r4 += 1
9: (b7) r5 = 0
10: (6a) *(u16 *)(r10 -512) = 0
11: (85) call bpf_skb_load_bytes#26
12: (b7) r0 = 0
13: (95) exit
Meaning, while we initialize the max_value stack slot that the
verifier thinks we access in the [1,2] range, in reality we
pass -7 as length which is interpreted as u32 in the helper.
Thus, this issue is relevant also for the case of helper ranges.
Resetting both bounds in check_reg_overflow() in case only one
of them exceeds limits is also not enough as similar test can be
created that uses values which are within range, thus also here
learned min value in r1 is incorrect when mixed with later signed
test to create a range:
0: (7a) *(u64 *)(r10 -8) = 0
1: (bf) r2 = r10
2: (07) r2 += -8
3: (18) r1 = 0xffff880ad081fa00
5: (85) call bpf_map_lookup_elem#1
6: (15) if r0 == 0x0 goto pc+7
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R10=fp
7: (7a) *(u64 *)(r10 -16) = -8
8: (79) r1 = *(u64 *)(r10 -16)
9: (b7) r2 = 2
10: (3d) if r2 >= r1 goto pc+3
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R1=inv,min_value=3
R2=imm2,min_value=2,max_value=2,min_align=2 R10=fp
11: (65) if r1 s> 0x4 goto pc+2
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0
R1=inv,min_value=3,max_value=4 R2=imm2,min_value=2,max_value=2,min_align=2 R10=fp
12: (0f) r0 += r1
13: (72) *(u8 *)(r0 +0) = 0
R0=map_value_adj(ks=8,vs=8,id=0),min_value=3,max_value=4
R1=inv,min_value=3,max_value=4 R2=imm2,min_value=2,max_value=2,min_align=2 R10=fp
14: (b7) r0 = 0
15: (95) exit
This leaves us with two options for fixing this: i) to invalidate
all prior learned information once we switch signed context, ii)
to track min/max signed and unsigned boundaries separately as
done in [0]. (Given latter introduces major changes throughout
the whole verifier, it's rather net-next material, thus this
patch follows option i), meaning we can derive bounds either
from only signed tests or only unsigned tests.) There is still the
case of adjust_reg_min_max_vals(), where we adjust bounds on ALU
operations, meaning programs like the following where boundaries
on the reg get mixed in context later on when bounds are merged
on the dst reg must get rejected, too:
0: (7a) *(u64 *)(r10 -8) = 0
1: (bf) r2 = r10
2: (07) r2 += -8
3: (18) r1 = 0xffff89b2bf87ce00
5: (85) call bpf_map_lookup_elem#1
6: (15) if r0 == 0x0 goto pc+6
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R10=fp
7: (7a) *(u64 *)(r10 -16) = -8
8: (79) r1 = *(u64 *)(r10 -16)
9: (b7) r2 = 2
10: (3d) if r2 >= r1 goto pc+2
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R1=inv,min_value=3
R2=imm2,min_value=2,max_value=2,min_align=2 R10=fp
11: (b7) r7 = 1
12: (65) if r7 s> 0x0 goto pc+2
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R1=inv,min_value=3
R2=imm2,min_value=2,max_value=2,min_align=2 R7=imm1,max_value=0 R10=fp
13: (b7) r0 = 0
14: (95) exit
from 12 to 15: R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0
R1=inv,min_value=3 R2=imm2,min_value=2,max_value=2,min_align=2 R7=imm1,min_value=1 R10=fp
15: (0f) r7 += r1
16: (65) if r7 s> 0x4 goto pc+2
R0=map_value(ks=8,vs=8,id=0),min_value=0,max_value=0 R1=inv,min_value=3
R2=imm2,min_value=2,max_value=2,min_align=2 R7=inv,min_value=4,max_value=4 R10=fp
17: (0f) r0 += r7
18: (72) *(u8 *)(r0 +0) = 0
R0=map_value_adj(ks=8,vs=8,id=0),min_value=4,max_value=4 R1=inv,min_value=3
R2=imm2,min_value=2,max_value=2,min_align=2 R7=inv,min_value=4,max_value=4 R10=fp
19: (b7) r0 = 0
20: (95) exit
Meaning, in adjust_reg_min_max_vals() we must also reset range
values on the dst when src/dst registers have mixed signed/
unsigned derived min/max value bounds with one unbounded value
as otherwise they can be added together deducing false boundaries.
Once both boundaries are established from either ALU ops or
compare operations w/o mixing signed/unsigned insns, then they
can safely be added to other regs also having both boundaries
established. Adding regs with one unbounded side to a map value
where the bounded side has been learned w/o mixing ops is
possible, but the resulting map value won't recover from that,
meaning such op is considered invalid on the time of actual
access. Invalid bounds are set on the dst reg in case i) src reg,
or ii) in case dst reg already had them. The only way to recover
would be to perform i) ALU ops but only 'add' is allowed on map
value types or ii) comparisons, but these are disallowed on
pointers in case they span a range. This is fine as only BPF_JEQ
and BPF_JNE may be performed on PTR_TO_MAP_VALUE_OR_NULL registers
which potentially turn them into PTR_TO_MAP_VALUE type depending
on the branch, so only here min/max value cannot be invalidated
for them.
In terms of state pruning, value_from_signed is considered
as well in states_equal() when dealing with adjusted map values.
With regards to breaking existing programs, there is a small
risk, but use-cases are rather quite narrow where this could
occur and mixing compares probably unlikely.
Joint work with Josef and Edward.
[0] https://lists.iovisor.org/pipermail/iovisor-dev/2017-June/000822.html
Fixes:
484611357c19 ("bpf: allow access into map value arrays")
Reported-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 20 Jul 2017 21:56:46 +0000 (14:56 -0700)]
Merge tag 'pm-4.13-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These are two stable-candidate fixes for the intel_pstate driver and
the generic power domains (genpd) framework.
Specifics:
- Fix the average CPU load computations in the intel_pstate driver on
Knights Landing (Xeon Phi) processors that require an extra factor
to compensate for a rate change differences between the TSC and
MPERF which is missing (Srinivas Pandruvada).
- Fix an initialization ordering issue in the generic power domains
(genpd) framework (Sudeep Holla)"
* tag 'pm-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present
cpufreq: intel_pstate: Correct the busy calculation for KNL
Linus Torvalds [Thu, 20 Jul 2017 18:34:47 +0000 (11:34 -0700)]
x86: mark kprobe templates as character arrays, not single characters
They really are, and the "take the address of a single character" makes
the string fortification code unhappy (it believes that you can now only
acccess one byte, rather than a byte range, and then raises errors for
the memory copies going on in there).
We could now remove a few 'addressof' operators (since arrays naturally
degrade to pointers), but this is the minimal patch that just changes
the C prototypes of those template arrays (the templates themselves are
defined in inline asm).
Reported-by: kernel test robot <xiaolong.ye@intel.com>
Acked-and-tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 20 Jul 2017 17:41:12 +0000 (10:41 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs
Pull misc filesystem fixes from Jan Kara:
"Several ACL related fixes for ext2, reiserfs, and hfsplus.
And also one minor isofs cleanup"
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
hfsplus: Don't clear SGID when inheriting ACLs
isofs: Fix off-by-one in 'session' mount option parsing
reiserfs: preserve i_mode if __reiserfs_set_acl() fails
ext2: preserve i_mode if ext2_set_acl() fails
ext2: Don't clear SGID when inheriting ACLs
reiserfs: Don't clear SGID when inheriting ACLs
Linus Torvalds [Thu, 20 Jul 2017 17:30:16 +0000 (10:30 -0700)]
Merge tag 'for-f2fs-v4.13-rc2' of git://git./linux/kernel/git/jaegeuk/f2fs
Pull f2fs fixes from Jaegeuk Kim:
"We've filed some bug fixes:
- missing f2fs case in terms of stale SGID bit, introduced by Jan
- build error for seq_file.h
- avoid cpu lockup
- wrong inode_unlock in error case"
* tag 'for-f2fs-v4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
f2fs: avoid cpu lockup
f2fs: include seq_file.h for sysfs.c
f2fs: Don't clear SGID when inheriting ACLs
f2fs: remove extra inode_unlock() in error path
Linus Torvalds [Thu, 20 Jul 2017 17:22:26 +0000 (10:22 -0700)]
Merge branch 'stable-4.13' of git://git.infradead.org/users/pcmoore/audit
Pull audit fix from Paul Moore:
"A small audit fix, just a single line, to plug a memory leak in some
audit error handling code"
* 'stable-4.13' of git://git.infradead.org/users/pcmoore/audit:
audit: fix memleak in auditd_send_unicast_skb.
Linus Torvalds [Thu, 20 Jul 2017 17:17:53 +0000 (10:17 -0700)]
Merge tag 'libnvdimm-fixes-4.13-rc2' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"A handful of small fixes for 4.13-rc2. Three of these fixes are tagged
for -stable. They have all appeared in at least one -next release with
no reported issues
- Fix handling of media errors that span a sector
- Fix support of multiple namespaces in a libnvdimm region being in
device-dax mode
- Clean up the machine check notifier properly when the nfit driver
fails to register
- Address a static analysis (smatch) report in device-dax"
* tag 'libnvdimm-fixes-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
device-dax: fix sysfs duplicate warnings
MAINTAINERS: list drivers/acpi/nfit/ files for libnvdimm sub-system
acpi/nfit: Fix memory corruption/Unregister mce decoder on failure
device-dax: fix 'passing zero to ERR_PTR()' warning
libnvdimm: fix badblock range handling of ARS range
Linus Torvalds [Thu, 20 Jul 2017 17:14:54 +0000 (10:14 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
- HID multitouch 4.12 regression fix from Dmitry Torokhov
- error handling fix for HID++ driver from Gustavo A. R. Silva
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: hid-logitech-hidpp: add NULL check on devm_kmemdup() return value
HID: multitouch: do not blindly set EV_KEY or EV_ABS bits
Rafael J. Wysocki [Thu, 20 Jul 2017 16:57:15 +0000 (18:57 +0200)]
Merge branches 'intel_pstate' and 'pm-domains'
* intel_pstate:
cpufreq: intel_pstate: Correct the busy calculation for KNL
* pm-domains:
PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present
Gustavo A. R. Silva [Fri, 7 Jul 2017 05:12:13 +0000 (00:12 -0500)]
HID: hid-logitech-hidpp: add NULL check on devm_kmemdup() return value
Check return value from call to devm_kmemdup() in order to prevent a NULL
pointer dereference.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Sabrina Dubroca [Wed, 19 Jul 2017 20:28:55 +0000 (22:28 +0200)]
ipv6: avoid overflow of offset in ip6_find_1stfragopt
In some cases, offset can overflow and can cause an infinite loop in
ip6_find_1stfragopt(). Make it unsigned int to prevent the overflow, and
cap it at IPV6_MAXPLEN, since packets larger than that should be invalid.
This problem has been here since before the beginning of git history.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Wed, 19 Jul 2017 17:46:59 +0000 (18:46 +0100)]
net: tehuti: don't process data if it has not been copied from userspace
The array data is only populated with valid information from userspace
if cmd != SIOCDEVPRIVATE, other cases the array contains garbage on
the stack. The subsequent switch statement acts on a subcommand in
data[0] which could be any garbage value if cmd is SIOCDEVPRIVATE which
seems incorrect to me. Instead, just return EOPNOTSUPP for the case
where cmd == SIOCDEVPRIVATE to avoid this issue.
As a side note, I suspect that the original intention of the code
was for this ioctl to work just for cmd == SIOCDEVPRIVATE (and the
current logic is reversed). However, I don't wont to change the current
semantics in case any userspace code relies on this existing behaviour.
Detected by CoverityScan, CID#139647 ("Uninitialized scalar variable")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Wed, 19 Jul 2017 17:22:40 +0000 (10:22 -0700)]
Revert "rtnetlink: Do not generate notifications for CHANGEADDR event"
This reverts commit
cd8966e75ed3c6b41a37047a904617bc44fa481f.
The duplicate CHANGEADDR event message is sent regardless of link
status whereas the setlink changes only generate a notification when
the link is up. Not sending a notification when the link is down breaks
dhcpcd which only processes hwaddr changes when the link is down.
Fixes reported regression:
https://bugzilla.kernel.org/show_bug.cgi?id=196355
Reported-by: Yaroslav Isakov <yaroslav.isakov@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arjun Vynipadath [Wed, 19 Jul 2017 07:39:18 +0000 (13:09 +0530)]
cxgb4: Update register ranges of T4/T5/T6 adapters
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Martin Hundebøll [Wed, 19 Jul 2017 06:17:02 +0000 (08:17 +0200)]
net: dsa: mv88e6xxx: Enable CMODE config support for 6390X
Commit
f39908d3b1c45 ('net: dsa: mv88e6xxx: Set the CMODE for mv88e6390
ports 9 & 10') added support for setting the CMODE for the 6390X family,
but only enabled it for 9290 and 6390 - and left out 6390X.
Fix support for setting the CMODE on 6390X also by assigning
mv88e6390x_port_set_cmode() to the .port_set_cmode function pointer in
mv88e6390x_ops too.
Fixes:
f39908d3b1c4 ("net: dsa: mv88e6xxx: Set the CMODE for mv88e6390 ports 9 & 10")
Signed-off-by: Martin Hundebøll <mnhu@prevas.dk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 20 Jul 2017 05:20:05 +0000 (22:20 -0700)]
Merge branch 'netvsc-lockdep-and-related-fixes'
Stephen Hemminger says:
====================
netvsc: lockdep and related fixes
These fix sparse and lockdep warnings from netvsc driver.
Targeting these at net-next since no actual related failures
have been observed in non-debug kernels.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Wed, 19 Jul 2017 18:53:19 +0000 (11:53 -0700)]
netvsc: add rtnl annotations in rndis
The rndis functions are used when changing device state.
Therefore the references from network device to internal state
are protected by RTNL mutex.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Wed, 19 Jul 2017 18:53:18 +0000 (11:53 -0700)]
netvsc: save pointer to parent netvsc_device in channel table
Keep back pointer in the per-channel data structure to
avoid any possible RCU related issues when napi poll is
called but netvsc_device is in RCU limbo.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Wed, 19 Jul 2017 18:53:17 +0000 (11:53 -0700)]
netvsc: need rcu_derefence when accessing internal device info
The netvsc_device structure should be accessed by rcu_dereference
in the send path. Change arguments to netvsc_send() to make
this easier to do correctly.
Remove no longer needed hv_device_to_netvsc_device.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Wed, 19 Jul 2017 18:53:16 +0000 (11:53 -0700)]
netvsc: use ERR_PTR to avoid dereference issues
The rndis_filter_device_add function is called both in
probe context and RTNL context,and creates the netvsc_device
inner structure. It is easier to get the RTNL lock annotation
correct if it returns the object directly, rather than implicitly
by updating network device private data.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Wed, 19 Jul 2017 18:53:15 +0000 (11:53 -0700)]
netvsc: change logic for change mtu and set_queues
Use device detach/attach to ensure that no packets are handed
to device during state changes. Call rndis_filter_open/close
directly as part of later VF related changes.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Wed, 19 Jul 2017 18:53:14 +0000 (11:53 -0700)]
netvsc: change order of steps in setting queues
This fixes the error unwind logic for incorrect number of queues.
If netif_set_real_num_XX_queues failed then rndis_filter_device_add
would have been called twice. Since input arguments are already
ranged checked this is a hypothetical only problem, not possible
in actual code.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Wed, 19 Jul 2017 18:53:13 +0000 (11:53 -0700)]
netvsc: add some rtnl_dereference annotations
In a couple places RTNL is held, and the netvsc_device pointer
is acquired without annotation.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Wed, 19 Jul 2017 18:53:12 +0000 (11:53 -0700)]
netvsc: force link update after MTU change
If two MTU changes are in less than update interval (2 seconds),
then the netvsc network device may get stuck with no carrier.
The netvsc driver debounces link status events which is fine
for unsolicited updates, but blocks getting the update after
down/up from MTU reinitialization.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 19 Jul 2017 23:45:16 +0000 (16:45 -0700)]
Merge branch 'dev_close-void'
Stephen Hemminger says:
====================
net: make dev_close void
Noticed while working on other changes. Why is dev_close()
returning int, it should be void. Should also change
ndo_close to be void, but that requires more work and someone
with more coccinelle foo (smpl) than me.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Tue, 18 Jul 2017 22:59:27 +0000 (15:59 -0700)]
net: make dev_close and related functions void
There is no useful return value from dev_close. All paths return 0.
Change dev_close and helper functions to void.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Tue, 18 Jul 2017 22:59:26 +0000 (15:59 -0700)]
hns: remove useless void cast
There is no need to cast away return value of dev_close.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Tue, 18 Jul 2017 22:59:25 +0000 (15:59 -0700)]
bluetooth: 6lowpan dev_close never returns error
The function dev_close in current kernel will never return an
error. Later changes will make it void.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:53:48 +0000 (15:53 -0500)]
liquidio: lio_main: remove unnecessary static in setup_io_queues()
Remove unnecessary static on local variables cpu_id_modulus and cpu_id.
Such variables are initialized before being used, on every execution
path throughout the function. The static has no benefit and, removing
it reduces the object file size.
This issue was detected using Coccinelle and the following semantic patch:
@bad exists@
position p;
identifier x;
type T;
@@
static T x@p;
...
x = <+...x...+>
@@
identifier x;
expression e;
type T;
position p != bad.p;
@@
-static
T x@p;
... when != x
when strict
?x = e;
In the following log you can see a significant difference in the object
file size. Also, there is a significant difference in the bss segment.
This log is the output of the size command, before and after the code
change:
before:
text data bss dec hex filename
78689 15272 27808 121769 1dba9 drivers/net/ethernet/cavium/liquidio/lio_main.o
after:
text data bss dec hex filename
78667 15128 27680 121475 1da83 drivers/net/ethernet/cavium/liquidio/lio_main.o
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:50:15 +0000 (15:50 -0500)]
liquidio: lio_vf_main: remove unnecessary static in setup_io_queues()
Remove unnecessary static on local variables cpu_id_modulus and cpu_id.
Such variables are initialized before being used, on every execution
path throughout the function. The static has no benefit and, removing
it reduces the object file size.
This issue was detected using Coccinelle and the following semantic patch:
@bad exists@
position p;
identifier x;
type T;
@@
static T x@p;
...
x = <+...x...+>
@@
identifier x;
expression e;
type T;
position p != bad.p;
@@
-static
T x@p;
... when != x
when strict
?x = e;
In the following log you can see a significant difference in the object
file size. Also, there is a significant difference in the bss segment.
This log is the output of the size command, before and after the code
change:
before:
text data bss dec hex filename
55656 10680 576 66912 10560 drivers/net/ethernet/cavium/liquidio/lio_vf_main.o
after:
text data bss dec hex filename
55796 10536 448 66780 104dc drivers/net/ethernet/cavium/liquidio/lio_vf_main.o
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:48:06 +0000 (15:48 -0500)]
net: ethernet: mediatek: remove useless code in mtk_poll_tx()
Remove useless local variable _condition_ and the code related.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:45:29 +0000 (15:45 -0500)]
qlcnic: remove unnecessary static in qlcnic_dump_fw()
Remove unnecessary static on local variable fw_dump_ops.
Such variable is initialized before being used, on every
execution path throughout the function. The static has no
benefit and, removing it reduces the object file size.
This issue was detected using Coccinelle and the following semantic patch:
@bad exists@
position p;
identifier x;
type T;
@@
static T x@p;
...
x = <+...x...+>
@@
identifier x;
expression e;
type T;
position p != bad.p;
@@
-static
T x@p;
... when != x
when strict
?x = e;
In the following log you can see a difference in the object file size.
This log is the output of the size command, before and after the code
change:
before:
text data bss dec hex filename
19032 2136 64 21232 52f0 drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.o
after:
text data bss dec hex filename
19020 2048 0 21068 524c drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.o
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:43:33 +0000 (15:43 -0500)]
net: tulip: remove useless code in tulip_init_one()
Remove useless local variable multiport_cnt and the code related.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:41:06 +0000 (15:41 -0500)]
rtlwifi: remove useless code
Remove useless local variables last_read_point and last_txw_point and
the code related.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gustavo A. R. Silva [Tue, 18 Jul 2017 20:37:11 +0000 (15:37 -0500)]
wireless: airo: remove unnecessary static in writerids()
Remove unnecessary static on local function pointer _writer_.
Such pointer is initialized before being used, on every
execution path throughout the function. The static has no
benefit and, removing it reduces the object file size.
This issue was detected using Coccinelle and the following semantic patch:
@bad exists@
position p;
identifier x;
type T;
@@
static T x@p;
...
x = <+...x...+>
@@
identifier x;
expression e;
type T;
position p != bad.p;
@@
-static
T x@p;
... when != x
when strict
?x = e;
In the following log you can see a significant difference in the object
file size. This log is the output of the size command, before and after
the code change:
before:
text data bss dec hex filename
113797 19152 1216 134165 20c15 drivers/net/wireless/cisco/airo.o
after:
text data bss dec hex filename
113881 19096 1152 134129 20bf1 drivers/net/wireless/cisco/airo.o
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Tue, 18 Jul 2017 20:23:56 +0000 (16:23 -0400)]
net: dsa: unexport dsa_is_port_initialized
The dsa_is_port_initialized helper is only used by dsa_switch_resume and
dsa_switch_suspend, if CONFIG_PM_SLEEP is enabled. Make it static to
dsa.c.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rosen, Rami [Tue, 18 Jul 2017 19:23:30 +0000 (22:23 +0300)]
net/packet: remove unused PGV_FROM_VMALLOC definition.
This patch removes the definition of PGV_FROM_VMALLOC from af_packet.c.
The PGV_FROM_VMALLOC definition was already removed by
commit
441c793a5650 ("net: cleanup unused macros in net directory"),
and its usage was removed even before by commit
c56b4d90123b
("af_packet: remove pgv.flags"); but it was added back by mistake later on,
in commit
f6fb8f100b80 ("af-packet: TPACKET_V3 flexible buffer implementation").
Signed-off-by: Rami Rosen <rami.rosen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arun Parameswaran [Thu, 6 Jul 2017 17:37:57 +0000 (10:37 -0700)]
dt-binding: ptp: Add SoC compatibility strings for dte ptp clock
Add SoC specific compatibility strings to the Broadcom DTE
based PTP clock binding document.
Fixed the document heading and node name.
Fixes:
80d6076140b2 ("dt-binding: ptp: add bindings document for dte based ptp clock")
Signed-off-by: Arun Parameswaran <arun.parameswaran@broadcom.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Tue, 18 Jul 2017 15:49:26 +0000 (18:49 +0300)]
ISDN: eicon: switch to use native bitmaps
Two arrays are clearly bit maps, so, make that explicit by converting to
bitmap API and remove custom helpers.
Note sig_ind() uses out of boundary bit to (looks like) protect against
potential bitmap_empty() checks for the same bitmap.
This patch removes that since:
1) that didn't guarantee atomicity anyway;
2) the first operation inside the for-loop is set bit in the bitmap
(which effectively makes it non-empty);
3) group_optimization() doesn't utilize possible emptiness of the bitmap
in question.
Thus, if there is a protection needed it should be implemented properly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Martin Habets [Tue, 18 Jul 2017 15:43:19 +0000 (16:43 +0100)]
sfc: Add ethtool -m support for QSFP modules
This also adds support for non-QSFP modules attached to QSFP.
Signed-off-by: Martin Habets <mhabets@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuchung Cheng [Wed, 19 Jul 2017 22:41:26 +0000 (15:41 -0700)]
tcp: adjust tail loss probe timeout
This patch adjusts the timeout formula to schedule the TCP loss probe
(TLP). The previous formula uses 2*SRTT or 1.5*RTT + DelayACKMax if
only one packet is in flight. It keeps a lower bound of 10 msec which
is too large for short RTT connections (e.g. within a data-center).
The new formula = 2*RTT + (inflight == 1 ? 200ms : 2ticks) which
performs better for short and fast connections.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Potapenko [Wed, 19 Jul 2017 18:27:30 +0000 (20:27 +0200)]
llist: clang: introduce member_address_is_nonnull()
Currently llist_for_each_entry() and llist_for_each_entry_safe() iterate
until &pos->member != NULL. But when building the kernel with Clang,
the compiler assumes &pos->member cannot be NULL if the member's offset
is greater than 0 (which would be equivalent to the object being
non-contiguous in memory). Therefore the loop condition is always true,
and the loops become infinite.
To work around this, introduce the member_address_is_nonnull() macro,
which casts object pointer to uintptr_t, thus letting the member pointer
to be NULL.
Signed-off-by: Alexander Potapenko <glider@google.com>
Tested-by: Sodagudi Prasad <psodagud@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eugeniy Paltsev [Tue, 18 Jul 2017 14:07:15 +0000 (17:07 +0300)]
NET: dwmac: Make dwmac reset unconditional
Unconditional reset dwmac before HW init if reset controller is present.
In existing implementation we reset dwmac only after second module
probing:
(module load -> unload -> load again [reset happens])
Now we reset dwmac at every module load:
(module load [reset happens] -> unload -> load again [reset happens])
Also some reset controllers have only reset callback instead of
assert + deassert callbacks pair, so handle this case.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tonghao Zhang [Tue, 18 Jul 2017 06:28:06 +0000 (23:28 -0700)]
openvswitch: Optimize operations for OvS flow_stats.
When calling the flow_free() to free the flow, we call many times
(cpu_possible_mask, eg. 128 as default) cpumask_next(). That will
take up our CPU usage if we call the flow_free() frequently.
When we put all packets to userspace via upcall, and OvS will send
them back via netlink to ovs_packet_cmd_execute(will call flow_free).
The test topo is shown as below. VM01 sends TCP packets to VM02,
and OvS forward packtets. When testing, we use perf to report the
system performance.
VM01 --- OvS-VM --- VM02
Without this patch, perf-top show as below: The flow_free() is
3.02% CPU usage.
4.23% [kernel] [k] _raw_spin_unlock_irqrestore
3.62% [kernel] [k] __do_softirq
3.16% [kernel] [k] __memcpy
3.02% [kernel] [k] flow_free
2.42% libc-2.17.so [.] __memcpy_ssse3_back
2.18% [kernel] [k] copy_user_generic_unrolled
2.17% [kernel] [k] find_next_bit
When applied this patch, perf-top show as below: Not shown on
the list anymore.
4.11% [kernel] [k] _raw_spin_unlock_irqrestore
3.79% [kernel] [k] __do_softirq
3.46% [kernel] [k] __memcpy
2.73% libc-2.17.so [.] __memcpy_ssse3_back
2.25% [kernel] [k] copy_user_generic_unrolled
1.89% libc-2.17.so [.] _int_malloc
1.53% ovs-vswitchd [.] xlate_actions
With this patch, the TCP throughput(we dont use Megaflow Cache
+ Microflow Cache) between VMs is 1.18Gbs/sec up to 1.30Gbs/sec
(maybe ~10% performance imporve).
This patch adds cpumask struct, the cpu_used_mask stores the cpu_id
that the flow used. And we only check the flow_stats on the cpu we
used, and it is unncessary to check all possible cpu when getting,
cleaning, and updating the flow_stats. Adding the cpu_used_mask to
sw_flow struct does’t increase the cacheline number.
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tonghao Zhang [Tue, 18 Jul 2017 06:28:05 +0000 (23:28 -0700)]
openvswitch: Optimize updating for OvS flow_stats.
In the ovs_flow_stats_update(), we only use the node
var to alloc flow_stats struct. But this is not a
common case, it is unnecessary to call the numa_node_id()
everytime. This patch is not a bugfix, but there maybe
a small increase.
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 19 Jul 2017 20:33:24 +0000 (13:33 -0700)]
net: Zero terminate ifr_name in dev_ifname().
The ifr.ifr_name is passed around and assumed to be NULL terminated.
Signed-off-by: David S. Miller <davem@davemloft.net>
Levin, Alexander [Tue, 18 Jul 2017 04:23:16 +0000 (04:23 +0000)]
wireless: wext: terminate ifr name coming from userspace
ifr name is assumed to be a valid string by the kernel, but nothing
was forcing username to pass a valid string.
In turn, this would cause panics as we tried to access the string
past it's valid memory.
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 19 Jul 2017 20:24:47 +0000 (13:24 -0700)]
Merge branch 'liquidio-lowmem-fixes'
Rick Farrington says:
====================
liquidio: avoid vm low memory crashes
This patchset addresses issues brought about by low memory conditions
in a VM. These conditions were not seen when the driver was exercised
normally. Rather, they were brought about through manual fault injection.
They are being included in the interest of hardening the driver against
unforeseen circumstances.
1. Fix GPF in octeon_init_droq(); zero the allocated block 'recv_buf_list'.
This prevents a GPF trying to access an invalid 'recv_buf_list[i]' entry
in octeon_droq_destroy_ring_buffers() if init didn't alloc all entries.
2. Don't dereference a NULL ptr in octeon_droq_destroy_ring_buffers().
3. For defensive programming, zero the allocated block 'oct->droq' in
octeon_setup_output_queues() and 'oct->instr_queue' in
octeon_setup_instr_queues().
change log:
V1 -> V2:
1. Corrected syntax in 'Subject' lines; no functional or code changes.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Rick Farrington [Tue, 18 Jul 2017 00:51:37 +0000 (17:51 -0700)]
liquidio: lowmem: init allocated memory to 0
For defensive programming, zero the allocated block 'oct->droq[0]' in
octeon_setup_output_queues() and 'oct->instr_queue[0]' in
octeon_setup_instr_queues().
Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rick Farrington [Tue, 18 Jul 2017 00:51:10 +0000 (17:51 -0700)]
liquidio: lowmem: do not dereference null ptr
Don't dereference a NULL ptr in octeon_droq_destroy_ring_buffers().
Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rick Farrington [Tue, 18 Jul 2017 00:50:47 +0000 (17:50 -0700)]
liquidio: lowmem: init allocated memory to 0
Fix GPF in octeon_init_droq(); zero the allocated block 'recv_buf_list'.
This prevents a GPF trying to access an invalid 'recv_buf_list[i]' entry
in octeon_droq_destroy_ring_buffers() if init didn't alloc all entries.
Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rick Farrington [Mon, 17 Jul 2017 20:33:14 +0000 (13:33 -0700)]
liquidio: support new firmware statistic fw_err_pki
Added support for new firmware statistic 'tx_err_pki'.
Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Derek Chickles <derek.chickles@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 19 Jul 2017 15:55:18 +0000 (08:55 -0700)]
Merge tag 'gcc-plugins-v4.13-rc2' of git://git./linux/kernel/git/kees/linux
Pull structure randomization updates from Kees Cook:
"Now that IPC and other changes have landed, enable manual markings for
randstruct plugin, including the task_struct.
This is the rest of what was staged in -next for the gcc-plugins, and
comes in three patches, largest first:
- mark "easy" structs with __randomize_layout
- mark task_struct with an optional anonymous struct to isolate the
__randomize_layout section
- mark structs to opt _out_ of automated marking (which will come
later)
And, FWIW, this continues to pass allmodconfig (normal and patched to
enable gcc-plugins) builds of x86_64, i386, arm64, arm, powerpc, and
s390 for me"
* tag 'gcc-plugins-v4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
randstruct: opt-out externally exposed function pointer structs
task_struct: Allow randomized layout
randstruct: Mark various structs for randomization
Linus Torvalds [Wed, 19 Jul 2017 15:49:46 +0000 (08:49 -0700)]
Merge tag 'ceph-for-4.13-rc2' of git://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"A number of small fixes for -rc1 Luminous changes plus a readdir race
fix, marked for stable"
* tag 'ceph-for-4.13-rc2' of git://github.com/ceph/ceph-client:
libceph: potential NULL dereference in ceph_msg_data_create()
ceph: fix race in concurrent readdir
libceph: don't call encode_request_finish() on MOSDBackoff messages
libceph: use alloc_pg_mapping() in __decode_pg_upmap_items()
libceph: set -EINVAL in one place in crush_decode()
libceph: NULL deref on osdmap_apply_incremental() error path
libceph: fix old style declaration warnings
Shu Wang [Tue, 18 Jul 2017 06:37:24 +0000 (14:37 +0800)]
audit: fix memleak in auditd_send_unicast_skb.
Found this issue by kmemleak report, auditd_send_unicast_skb
did not free skb if rcu_dereference(auditd_conn) returns null.
unreferenced object 0xffff88082568ce00 (size 256):
comm "auditd", pid 1119, jiffies
4294708499
backtrace:
[<
ffffffff8176166a>] kmemleak_alloc+0x4a/0xa0
[<
ffffffff8121820c>] kmem_cache_alloc_node+0xcc/0x210
[<
ffffffff8161b99d>] __alloc_skb+0x5d/0x290
[<
ffffffff8113c614>] audit_make_reply+0x54/0xd0
[<
ffffffff8113dfa7>] audit_receive_msg+0x967/0xd70
----------------
(gdb) list *audit_receive_msg+0x967
0xffffffff8113dff7 is in audit_receive_msg (kernel/audit.c:1133).
1132 skb = audit_make_reply(0, AUDIT_REPLACE, 0,
0, &pvnr, sizeof(pvnr));
---------------
[<
ffffffff8113e402>] audit_receive+0x52/0xa0
[<
ffffffff8166c561>] netlink_unicast+0x181/0x240
[<
ffffffff8166c8e2>] netlink_sendmsg+0x2c2/0x3b0
[<
ffffffff816112e8>] sock_sendmsg+0x38/0x50
[<
ffffffff816117a2>] SYSC_sendto+0x102/0x190
[<
ffffffff81612f4e>] SyS_sendto+0xe/0x10
[<
ffffffff8176d337>] entry_SYSCALL_64_fastpath+0x1a/0xa5
[<
ffffffffffffffff>] 0xffffffffffffffff
Signed-off-by: Shu Wang <shuwang@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Sudeep Holla [Fri, 14 Jul 2017 10:51:48 +0000 (11:51 +0100)]
PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present
If the genpd->attach_dev or genpd->power_on fails, genpd_dev_pm_attach
may return -EPROBE_DEFER initially. However genpd_alloc_dev_data sets
the PM domain for the device unconditionally.
When subsequent attempts are made to call genpd_dev_pm_attach, it may
return -EEXISTS checking dev->pm_domain without re-attempting to call
attach_dev or power_on.
platform_drv_probe then attempts to call drv->probe as the return value
-EEXIST != -EPROBE_DEFER, which may end up in a situation where the
device is accessed without it's power domain switched on.
Fixes:
f104e1e5ef57 (PM / Domains: Re-order initialization of generic_pm_domain_data)
Cc: 4.4+ <stable@vger.kernel.org> # v4.4+
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Dan Williams [Wed, 19 Jul 2017 00:49:14 +0000 (17:49 -0700)]
device-dax: fix sysfs duplicate warnings
Fix warnings of the form...
WARNING: CPU: 10 PID: 4983 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x62/0x80
sysfs: cannot create duplicate filename '/class/dax/dax12.0'
Call Trace:
dump_stack+0x63/0x86
__warn+0xcb/0xf0
warn_slowpath_fmt+0x5a/0x80
? kernfs_path_from_node+0x4f/0x60
sysfs_warn_dup+0x62/0x80
sysfs_do_create_link_sd.isra.2+0x97/0xb0
sysfs_create_link+0x25/0x40
device_add+0x266/0x630
devm_create_dax_dev+0x2cf/0x340 [dax]
dax_pmem_probe+0x1f5/0x26e [dax_pmem]
nvdimm_bus_probe+0x71/0x120
...by reusing the namespace id for the device-dax instance name.
Now that we have decided that there will never by more than one
device-dax instance per libnvdimm-namespace parent device [1], we can
directly reuse the namepace ids. There are some possible follow-on
cleanups, but those are saved for a later patch to simplify the -stable
backport.
[1]: https://lists.01.org/pipermail/linux-nvdimm/2016-December/008266.html
Fixes:
98a29c39dc68 ("libnvdimm, namespace: allow creation of multiple pmem...")
Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: <stable@vger.kernel.org>
Reported-by: Dariusz Dokupil <dariusz.dokupil@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Carpenter [Tue, 18 Jul 2017 19:38:56 +0000 (22:38 +0300)]
netfilter: fix netfilter_net_init() return
We accidentally return an uninitialized variable.
Fixes:
cf56c2f892a8 ("netfilter: remove old pre-netns era hook api")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 18 Jul 2017 19:04:57 +0000 (12:04 -0700)]
Merge branch 'net-attribute_group-const'
Arvind Yadav says:
====================
constify net attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:46:19 +0000 (15:16 +0530)]
net: chelsio: cxgb3: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
28720 985 12 29717 7415 net/.../cxgb3/cxgb3_main.o
File size After adding 'const':
text data bss dec hex filename
28848 857 12 29717 7415 net/.../cxgb3/cxgb3_main.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:45:56 +0000 (15:15 +0530)]
net: bonding: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
4512 1472 0 5984 1760 drivers/net/bonding/bond_sysfs.o
File size After adding 'const':
text data bss dec hex filename
4576 1408 0 5984 1760 drivers/net/bonding/bond_sysfs.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:45:36 +0000 (15:15 +0530)]
arcnet: com20020-pci: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
3409 948 28 4385 1121 drivers/net/arcnet/com20020-pci.o
File size After adding 'const':
text data bss dec hex filename
3473 884 28 4385 1121 drivers/net/arcnet/com20020-pci.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:45:02 +0000 (15:15 +0530)]
wireless: iwlegacy: Constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:45:01 +0000 (15:15 +0530)]
wireless: iwlegacy: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:45:00 +0000 (15:15 +0530)]
wireless: ipw2100: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:44:59 +0000 (15:14 +0530)]
wireless: ipw2200: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:44:19 +0000 (15:14 +0530)]
net: can: janz-ican3: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
11800 368 0 12168 2f88 drivers/net/can/janz-ican3.o
File size After adding 'const':
text data bss dec hex filename
11864 304 0 12168 2f88 drivers/net/can/janz-ican3.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:44:18 +0000 (15:14 +0530)]
net: can: at91_can: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
6164 304 0 6468 1944 drivers/net/can/at91_can.o
File size After adding 'const':
text data bss dec hex filename
6228 240 0 6468 1944 drivers/net/can/at91_can.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvind Yadav [Tue, 18 Jul 2017 09:43:45 +0000 (15:13 +0530)]
net: cdc_ncm: constify attribute_group structures.
attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/netdevice.h> work
with const attribute_group. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
13275 928 1 14204 377c drivers/net/usb/cdc_ncm.o
File size After adding 'const':
text data bss dec hex filename
13339 864 1 14204 377c drivers/net/usb/cdc_ncm.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 18 Jul 2017 19:01:39 +0000 (12:01 -0700)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for your net tree,
they are:
1) Missing netlink message sanity check in nfnetlink, patch from
Mateusz Jurczyk.
2) We now have netfilter per-netns hooks, so let's kill global hook
infrastructure, this infrastructure is known to be racy with netns.
We don't care about out of tree modules. Patch from Florian Westphal.
3) find_appropriate_src() is buggy when colissions happens after the
conversion of the nat bysource to rhashtable. Also from Florian.
4) Remove forward chain in nf_tables arp family, it's useless and it is
causing quite a bit of confusion, from Florian Westphal.
5) nf_ct_remove_expect() is called with the wrong parameter, causing
kernel oops, patch from Florian Westphal.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Tue, 18 Jul 2017 09:57:55 +0000 (11:57 +0200)]
udp: preserve skb->dst if required for IP options processing
Eric noticed that in udp_recvmsg() we still need to access
skb->dst while processing the IP options.
Since commit
0a463c78d25b ("udp: avoid a cache miss on dequeue")
skb->dst is no more available at recvmsg() time and bad things
will happen if we enter the relevant code path.
This commit address the issue, avoid clearing skb->dst if
any IP options are present into the relevant skb.
Since the IP CB is contained in the first skb cacheline, we can
test it to decide to leverage the consume_stateless_skb()
optimization, without measurable additional cost in the faster
path.
v1 -> v2: updated commit message tags
Fixes:
0a463c78d25b ("udp: avoid a cache miss on dequeue")
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 18 Jul 2017 18:57:34 +0000 (11:57 -0700)]
Merge branch 'mlxsw-Preparations-for-IPv6-UC-router'
Jiri Pirko says:
====================
mlxsw: Preparations for IPv6 UC router
Ido says:
The purpose of this set is to prepare the driver for the introduction of
IPv6 FIB offload. It's mainly composed of small and non-functional
changes, that either add the IPv6 equivalent of existing IPv4 code or
aimed at making the introduction of IPv6-specific code easier.
The first five patches enable IPv6 forwarding in the device and allow us
to configure router interfaces (RIFs) based on inet6addr notifications.
The next six patches add support for programming IPv6 neighbours into
the device's table as well as dumping their activity and updating the
kernel accordingly.
The last 11 patches extend current infrastructure to allow us to program
IPv6 routes, set catch-all IPv6 trap in case of abort and make the code
more receptive towards up-coming changes.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:30 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Update prefix count for IPv6
The number of possible prefix lengths for IPv6 is 129 and not 128.
Fixes following warning from UBSAN when /128 routes are offloaded:
UBSAN: Undefined behaviour in
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c:2510:27 index 128 is out
of range for type 'long unsigned int [128]'
Fixes:
5e9c16cc83a7 ("mlxsw: spectrum_router: Implement private fib")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:29 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Rename functions to add / delete a FIB entry
These functions aren't specific to IPv4 and can be re-used for IPv6.
Drop the '4' designation from their name.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:28 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Drop unnecessary parameter
Functions that take as argument a FIB entry don't need to take FIB node
as well, as it can be extracted from the entry.
Remove unnecessary FIB node parameter.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:27 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Mark IPv4 specific function accordingly
The functions to create and destroy a nexthop group are IPv4 specific
and should be renamed accordingly, so that they won't be confused with
the IPv6 specific functions in follow-up patches.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:26 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Create IPv4 specific entry struct
Some of the parameters stored in the FIB entry structure are specific to
IPv4 and therefore better placed in an IPv4 specific structure.
Create an IPv4 specific structure that encapsulates the common FIB entry
structure and contains IPv4 specific parameters.
In a follow-up patchset an IPv6 specific structure will be introduced.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:25 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Set abort trap for IPv6
When we fail to insert a route we invoke the abort mechanism which
flushes all the tables and inserts a default route in each, so that all
packets incoming to the router will be trapped to the CPU.
Upon abort, add an IPv6 default route to the IPv6 tables.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:24 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Allow IPv6 routes to be programmed
Take advantage of previous patch and allow the RALUE register to be
called with IPv6 routes.
In order to re-use as much code as possible between IPv4 and IPv6, only
the lowest-level function that actually does the register packing is
demuxed based on the passed protocol.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:23 +0000 (10:10 +0200)]
mlxsw: reg: Update RALUE register with IPv6 support
Update the register so that IPv6 LPM entries could be programmed to the
device's table.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:22 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Extend virtual routers with IPv6 support
A Virtual Router (VR) is an entity which corresponds to a VRF and
performs FIB lookup in an LPM tree according to the {VR, IP Proto} ->
Tree binding.
Extend the virtual router data structure towards IPv6 FIB offload.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:21 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Make FIB node retrieval family agnostic
A FIB node is an entity which stores routes sharing the same prefix and
length. The data structure itself is already family agnostic, but we
make some of its operations agnostic as well and thus re-use them for
IPv6 offload.
Instead of passing an IPv4-specific structure to fib4_node_get(), pass
general routing parameters and rename the function accordingly.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:20 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Don't create FIB node during lookup
When looking up a FIB entry we shouldn't create the FIB node where it's
supposed to be linked in case the node doesn't already exist.
Instead, lookup the node and fail if it doesn't exist.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Tue, 18 Jul 2017 08:10:19 +0000 (10:10 +0200)]
mlxsw: spectrum_router: Don't assume neighbour type
Thankfully, the neighbour subsystem is agnostic to the upper protocol
and used by both IPv4 and IPv6. By removing assumptions regarding the
neighbour type we can thus re-use much of the neighbour-related code for
both IPv4 and IPv6.
For each nexthop, store its gateway IP and for nexthop group store the
neighbour table used by its nexthops.
Use this information throughout the code and remove assumption about the
neighbour type.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>