| Age | Commit message (Collapse) | Author | Files | Lines |
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Some overlapping changes in the mlx5 driver.
A merge conflict resolution posted by Stephen Rothwell was used as a
guide.
Signed-off-by: David S. Miller <davem@davemloft.net>
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sk_ehashfn() is only used from a single file.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We need to use refcount_set() on a newly created rule to avoid
following error :
[ 64.601749] ------------[ cut here ]------------
[ 64.601757] WARNING: CPU: 0 PID: 6476 at lib/refcount.c:184 refcount_sub_and_test+0x75/0xa0
[ 64.601758] Modules linked in: w1_therm wire cdc_acm ehci_pci ehci_hcd mlx4_en ib_uverbs mlx4_ib ib_core mlx4_core
[ 64.601769] CPU: 0 PID: 6476 Comm: ip Tainted: G W 4.12.0-smp-DEV #274
[ 64.601771] task: ffff8837bf482040 task.stack: ffff8837bdc08000
[ 64.601773] RIP: 0010:refcount_sub_and_test+0x75/0xa0
[ 64.601774] RSP: 0018:ffff8837bdc0f5c0 EFLAGS: 00010286
[ 64.601776] RAX: 0000000000000026 RBX: 0000000000000001 RCX: 0000000000000000
[ 64.601777] RDX: 0000000000000026 RSI: 0000000000000096 RDI: ffffed06f7b81eae
[ 64.601778] RBP: ffff8837bdc0f5d0 R08: 0000000000000004 R09: fffffbfff4a54c25
[ 64.601779] R10: 00000000cbc500e5 R11: ffffffffa52a6128 R12: ffff881febcf6f24
[ 64.601779] R13: ffff881fbf4eaf00 R14: ffff881febcf6f80 R15: ffff8837d7a4ed00
[ 64.601781] FS: 00007ff5a2f6b700(0000) GS:ffff881fff800000(0000) knlGS:0000000000000000
[ 64.601782] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 64.601783] CR2: 00007ffcdc70d000 CR3: 0000001f9c91e000 CR4: 00000000001406f0
[ 64.601783] Call Trace:
[ 64.601786] refcount_dec_and_test+0x11/0x20
[ 64.601790] fib_nl_delrule+0xc39/0x1630
[ 64.601793] ? is_bpf_text_address+0xe/0x20
[ 64.601795] ? fib_nl_newrule+0x25e0/0x25e0
[ 64.601798] ? depot_save_stack+0x133/0x470
[ 64.601801] ? ns_capable+0x13/0x20
[ 64.601803] ? __netlink_ns_capable+0xcc/0x100
[ 64.601806] rtnetlink_rcv_msg+0x23a/0x6a0
[ 64.601808] ? rtnl_newlink+0x1630/0x1630
[ 64.601811] ? memset+0x31/0x40
[ 64.601813] netlink_rcv_skb+0x2d7/0x440
[ 64.601815] ? rtnl_newlink+0x1630/0x1630
[ 64.601816] ? netlink_ack+0xaf0/0xaf0
[ 64.601818] ? kasan_unpoison_shadow+0x35/0x50
[ 64.601820] ? __kmalloc_node_track_caller+0x4c/0x70
[ 64.601821] rtnetlink_rcv+0x28/0x30
[ 64.601823] netlink_unicast+0x422/0x610
[ 64.601824] ? netlink_attachskb+0x650/0x650
[ 64.601826] netlink_sendmsg+0x7b7/0xb60
[ 64.601828] ? netlink_unicast+0x610/0x610
[ 64.601830] ? netlink_unicast+0x610/0x610
[ 64.601832] sock_sendmsg+0xba/0xf0
[ 64.601834] ___sys_sendmsg+0x6a9/0x8c0
[ 64.601835] ? copy_msghdr_from_user+0x520/0x520
[ 64.601837] ? __alloc_pages_nodemask+0x160/0x520
[ 64.601839] ? memcg_write_event_control+0xd60/0xd60
[ 64.601841] ? __alloc_pages_slowpath+0x1d50/0x1d50
[ 64.601843] ? kasan_slab_free+0x71/0xc0
[ 64.601845] ? mem_cgroup_commit_charge+0xb2/0x11d0
[ 64.601847] ? lru_cache_add_active_or_unevictable+0x7d/0x1a0
[ 64.601849] ? __handle_mm_fault+0x1af8/0x2810
[ 64.601851] ? may_open_dev+0xc0/0xc0
[ 64.601852] ? __pmd_alloc+0x2c0/0x2c0
[ 64.601853] ? __fdget+0x13/0x20
[ 64.601855] __sys_sendmsg+0xc6/0x150
[ 64.601856] ? __sys_sendmsg+0xc6/0x150
[ 64.601857] ? SyS_shutdown+0x170/0x170
[ 64.601859] ? handle_mm_fault+0x28a/0x650
[ 64.601861] SyS_sendmsg+0x12/0x20
[ 64.601863] entry_SYSCALL_64_fastpath+0x13/0x94
Fixes: 717d1e993ad8 ("net: convert fib_rule.refcnt from atomic_t to refcount_t")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The variable mlx4_log_num_mgm_entry_size is only called in main.c.
CC: Joe Jin <joe.jin@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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commit 9256645af098 ("net/core: relax BUILD_BUG_ON in
netdev_stats_to_stats64") made an attempt to read beyond
the size of the source a possibility.
Fix to only copy src size to dest. As dest might be bigger than src.
==================================================================
BUG: KASAN: slab-out-of-bounds in netdev_stats_to_stats64+0xe/0x30 at addr ffff8801be248b20
Read of size 192 by task VBoxNetAdpCtl/6734
CPU: 1 PID: 6734 Comm: VBoxNetAdpCtl Tainted: G O 4.11.4prahal+intel+ #118
Hardware name: LENOVO 20CDCTO1WW/20CDCTO1WW, BIOS GQET52WW (1.32 ) 05/04/2017
Call Trace:
dump_stack+0x63/0x86
kasan_object_err+0x1c/0x70
kasan_report+0x270/0x520
? netdev_stats_to_stats64+0xe/0x30
? sched_clock_cpu+0x1b/0x190
? __module_address+0x3e/0x3b0
? unwind_next_frame+0x1ea/0xb00
check_memory_region+0x13c/0x1a0
memcpy+0x23/0x50
netdev_stats_to_stats64+0xe/0x30
dev_get_stats+0x1b9/0x230
rtnl_fill_stats+0x44/0xc00
? nla_put+0xc6/0x130
rtnl_fill_ifinfo+0xe9e/0x3700
? rtnl_fill_vfinfo+0xde0/0xde0
? sched_clock+0x9/0x10
? sched_clock+0x9/0x10
? sched_clock_local+0x120/0x130
? __module_address+0x3e/0x3b0
? unwind_next_frame+0x1ea/0xb00
? sched_clock+0x9/0x10
? sched_clock+0x9/0x10
? sched_clock_cpu+0x1b/0x190
? VBoxNetAdpLinuxIOCtlUnlocked+0x14b/0x280 [vboxnetadp]
? depot_save_stack+0x1d8/0x4a0
? depot_save_stack+0x34f/0x4a0
? depot_save_stack+0x34f/0x4a0
? save_stack+0xb1/0xd0
? save_stack_trace+0x16/0x20
? save_stack+0x46/0xd0
? kasan_slab_alloc+0x12/0x20
? __kmalloc_node_track_caller+0x10d/0x350
? __kmalloc_reserve.isra.36+0x2c/0xc0
? __alloc_skb+0xd0/0x560
? rtmsg_ifinfo_build_skb+0x61/0x120
? rtmsg_ifinfo.part.25+0x16/0xb0
? rtmsg_ifinfo+0x47/0x70
? register_netdev+0x15/0x30
? vboxNetAdpOsCreate+0xc0/0x1c0 [vboxnetadp]
? vboxNetAdpCreate+0x210/0x400 [vboxnetadp]
? VBoxNetAdpLinuxIOCtlUnlocked+0x14b/0x280 [vboxnetadp]
? do_vfs_ioctl+0x17f/0xff0
? SyS_ioctl+0x74/0x80
? do_syscall_64+0x182/0x390
? __alloc_skb+0xd0/0x560
? __alloc_skb+0xd0/0x560
? save_stack_trace+0x16/0x20
? init_object+0x64/0xa0
? ___slab_alloc+0x1ae/0x5c0
? ___slab_alloc+0x1ae/0x5c0
? __alloc_skb+0xd0/0x560
? sched_clock+0x9/0x10
? kasan_unpoison_shadow+0x35/0x50
? kasan_kmalloc+0xad/0xe0
? __kmalloc_node_track_caller+0x246/0x350
? __alloc_skb+0xd0/0x560
? kasan_unpoison_shadow+0x35/0x50
? memset+0x31/0x40
? __alloc_skb+0x31f/0x560
? napi_consume_skb+0x320/0x320
? br_get_link_af_size_filtered+0xb7/0x120 [bridge]
? if_nlmsg_size+0x440/0x630
rtmsg_ifinfo_build_skb+0x83/0x120
rtmsg_ifinfo.part.25+0x16/0xb0
rtmsg_ifinfo+0x47/0x70
register_netdevice+0xa2b/0xe50
? __kmalloc+0x171/0x2d0
? netdev_change_features+0x80/0x80
register_netdev+0x15/0x30
vboxNetAdpOsCreate+0xc0/0x1c0 [vboxnetadp]
vboxNetAdpCreate+0x210/0x400 [vboxnetadp]
? vboxNetAdpComposeMACAddress+0x1d0/0x1d0 [vboxnetadp]
? kasan_check_write+0x14/0x20
VBoxNetAdpLinuxIOCtlUnlocked+0x14b/0x280 [vboxnetadp]
? VBoxNetAdpLinuxOpen+0x20/0x20 [vboxnetadp]
? lock_acquire+0x11c/0x270
? __audit_syscall_entry+0x2fb/0x660
do_vfs_ioctl+0x17f/0xff0
? __audit_syscall_entry+0x2fb/0x660
? ioctl_preallocate+0x1d0/0x1d0
? __audit_syscall_entry+0x2fb/0x660
? kmem_cache_free+0xb2/0x250
? syscall_trace_enter+0x537/0xd00
? exit_to_usermode_loop+0x100/0x100
SyS_ioctl+0x74/0x80
? do_sys_open+0x350/0x350
? do_vfs_ioctl+0xff0/0xff0
do_syscall_64+0x182/0x390
entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x7f7e39a1ae07
RSP: 002b:00007ffc6f04c6d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffc6f04c730 RCX: 00007f7e39a1ae07
RDX: 00007ffc6f04c730 RSI: 00000000c0207601 RDI: 0000000000000007
RBP: 00007ffc6f04c700 R08: 00007ffc6f04c780 R09: 0000000000000008
R10: 0000000000000541 R11: 0000000000000206 R12: 0000000000000007
R13: 00000000c0207601 R14: 00007ffc6f04c730 R15: 0000000000000012
Object at ffff8801be248008, in cache kmalloc-4096 size: 4096
Allocated:
PID = 6734
save_stack_trace+0x16/0x20
save_stack+0x46/0xd0
kasan_kmalloc+0xad/0xe0
__kmalloc+0x171/0x2d0
alloc_netdev_mqs+0x8a7/0xbe0
vboxNetAdpOsCreate+0x65/0x1c0 [vboxnetadp]
vboxNetAdpCreate+0x210/0x400 [vboxnetadp]
VBoxNetAdpLinuxIOCtlUnlocked+0x14b/0x280 [vboxnetadp]
do_vfs_ioctl+0x17f/0xff0
SyS_ioctl+0x74/0x80
do_syscall_64+0x182/0x390
return_from_SYSCALL_64+0x0/0x6a
Freed:
PID = 5600
save_stack_trace+0x16/0x20
save_stack+0x46/0xd0
kasan_slab_free+0x73/0xc0
kfree+0xe4/0x220
kvfree+0x25/0x30
single_release+0x74/0xb0
__fput+0x265/0x6b0
____fput+0x9/0x10
task_work_run+0xd5/0x150
exit_to_usermode_loop+0xe2/0x100
do_syscall_64+0x26c/0x390
return_from_SYSCALL_64+0x0/0x6a
Memory state around the buggy address:
ffff8801be248a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8801be248b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8801be248b80: 00 00 00 00 00 00 00 00 00 00 00 07 fc fc fc fc
^
ffff8801be248c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8801be248c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
Signed-off-by: Alban Browaeys <alban.browaeys@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pointer hdr in netxen_setup_minidump() is set but never used, thus
should be removed.
Signed-off-by: Christos Gkekas <chris.gekas@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jiri Benc says:
====================
vxlan, geneve: fix hlist corruption
Fix memory corruption introduced with the support of both IPv4 and IPv6
sockets in a single device. The same bug is present in VXLAN and Geneve.
====================
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It's not a good idea to add the same hlist_node to two different hash lists.
This leads to various hard to debug memory corruptions.
Fixes: 8ed66f0e8235 ("geneve: implement support for IPv6-based tunnels")
Cc: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It's not a good idea to add the same hlist_node to two different hash lists.
This leads to various hard to debug memory corruptions.
Fixes: b1be00a6c39f ("vxlan: support both IPv4 and IPv6 sockets in a single vxlan device")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If mlx5 is set to be built-in and mlxfw as a module, we
get a link error:
drivers/built-in.o: In function `mlx5_firmware_flash':
(.text+0x5aed72): undefined reference to `mlxfw_firmware_flash'
Since we don't want to mandate selecting mlxfw for mlx5 users, we
use the IS_REACHABLE macro to make sure that a stub is exposed
to the caller.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Jakub Kicinski <kubakici@wp.pl>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann says:
====================
Misc BPF helper/verifier improvements
Miscellanous improvements I still had in my queue, it adds a new
bpf_skb_adjust_room() helper for cls_bpf, exports to fdinfo whether
tail call array owner is JITed, so iproute2 error reporting can be
improved on that regard, a small cleanup and extension to trace
printk, two verifier patches, one to make the code around narrower
ctx access a bit more straight forward and one to allow for imm += x
operations, that we've seen LLVM generating and the verifier currently
rejecting. We've included the patch 6 given it's rather small and
we ran into it from LLVM side, it would be great if it could be
queued for stable as well after the merge window. Last but not least,
test cases are added also related to imm alu improvement.
Thanks a lot!
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add couple of verifier test cases for x|imm += pkt_ptr, including the
imm += x extension.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently the verifier does not track imm across alu operations when
the source register is of unknown type. This adds additional pattern
matching to catch this and track imm. We've seen LLVM generating this
pattern while working on cilium.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, bpf_trace_printk does not support common formatting
symbol '%i' however vsprintf does and is what eventually gets
called by bpf helper. If users are used to '%i' and currently
make use of it, then bpf_trace_printk will just return with
error without dumping anything to the trace pipe, so just add
support for '%i' to the helper.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We do export through fdinfo already whether a prog is JITed or not,
given a program load can fail in case of either prog or tail call map
has JITed property, but neither both are JITed or not JITed, we can
facilitate error reporting in loaders like iproute2 through exporting
owner_jited of tail call map. We already do export owner_prog_type
through this facility, so parser can pick up both for comparison.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This work tries to make the semantics and code around the
narrower ctx access a bit easier to follow. Right now
everything is done inside the .is_valid_access(). Offset
matching is done differently for read/write types, meaning
writes don't support narrower access and thus matching only
on offsetof(struct foo, bar) is enough whereas for read
case that supports narrower access we must check for
offsetof(struct foo, bar) + offsetof(struct foo, bar) +
sizeof(<bar>) - 1 for each of the cases. For read cases of
individual members that don't support narrower access (like
packet pointers or skb->cb[] case which has its own narrow
access logic), we check as usual only offsetof(struct foo,
bar) like in write case. Then, for the case where narrower
access is allowed, we also need to set the aux info for the
access. Meaning, ctx_field_size and converted_op_size have
to be set. First is the original field size e.g. sizeof(<bar>)
as in above example from the user facing ctx, and latter
one is the target size after actual rewrite happened, thus
for the kernel facing ctx. Also here we need the range match
and we need to keep track changing convert_ctx_access() and
converted_op_size from is_valid_access() as both are not at
the same location.
We can simplify the code a bit: check_ctx_access() becomes
simpler in that we only store ctx_field_size as a meta data
and later in convert_ctx_accesses() we fetch the target_size
right from the location where we do convert. Should the verifier
be misconfigured we do reject for BPF_WRITE cases or target_size
that are not provided. For the subsystems, we always work on
ranges in is_valid_access() and add small helpers for ranges
and narrow access, convert_ctx_accesses() sets target_size
for the relevant instruction.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Cc: Yonghong Song <yhs@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This work adds a helper that can be used to adjust net room of an
skb. The helper is generic and can be further extended in future.
Main use case is for having a programmatic way to add/remove room to
v4/v6 header options along with cls_bpf on egress and ingress hook
of the data path. It reuses most of the infrastructure that we added
for the bpf_skb_change_type() helper which can be used in nat64
translations. Similarly, the helper only takes care of adjusting the
room so that related data is populated and csum adapted out of the
BPF program using it.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a small skb_mac_header_len() helper similarly as the
skb_network_header_len() we have and replace open coded
places in BPF's bpf_skb_change_proto() helper. Will also
be used in upcoming work.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The HP lt4132 LTE/HSPA+ 4G Module (03f0:a31d) is a rebranded Huawei
ME906s-158 device. It, like the ME906s-158, requires the "NDP to end"
quirk for correct operation.
Signed-off-by: Tore Anderson <tore@fud.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In the IPVLAN documentation there is an example command line where the
master and slave interface names are inverted.
Fix the command line and also add the optional `name' keyword to better
describe what the command is doing.
v2: added commit message
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit a985343ba906 ("vxlan: refactor verification and application of
configuration") modified vxlan device creation, and replaced the
assignment of vxlan->net to src_net with dev_net(netdev) in ->setup().
But dev_net(netdev) is not the same as src_net. At the time ->setup()
is called, dev_net hasn't been set yet, so we end up creating the
socket for the vxlan device in init_net.
Fix this by bringing back the assignment of vxlan->net during device
creation.
Fixes: a985343ba906 ("vxlan: refactor verification and application of configuration")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Lin Yun Sheng says:
====================
Add loopback support in phy_driver and hns ethtool fix
This Patch Set add set_loopback in phy_driver and use it to setup loopback
when doing ethtool phy self_test.
Patch V8:
Respin the Patch based on net-next
Patch V7:
1. Add comment why resume the phy in hns_nic_config_phy_loopback.
2. Fix a typo error in patch description.
Patch V6:
Fix Or'ing error code in __lb_setup.
Patch V5:
Removing non loopback related code change.
Patch V4:
1. Remove c45 checking
2. Add -ENOTSUPP when function pointer is null,
take mutex in phy_loopback.
Patch V3:
Calling phy_loopback enable and disable in pair in hns mac driver.
Patch V2:
1. Add phy_loopback in phy_device.c.
2. Do error checking and do the read and write once in
genphy_loopback.
3. Remove gen10g_loopback in phy_device.c.
Patch V1:
Initial Submit
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use function set_loopback in phy_driver to setup phy loopback
when doing ethtool self test.
Signed-off-by: Lin Yun Sheng <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch add set_loopback in phy_driver, which is used by MAC
driver to enable or disable phy loopback. it also add a generic
genphy_loopback function, which use BMCR loopback bit to enable
or disable loopback.
Signed-off-by: Lin Yun Sheng <linyunsheng@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, when the link for $DEV is down, this command succeeds but the
address is removed immediately by DAD (1):
ip addr add 1111::12/64 dev $DEV valid_lft 3600 preferred_lft 1800
In the same situation, this will succeed and not remove the address (2):
ip addr add 1111::12/64 dev $DEV
ip addr change 1111::12/64 dev $DEV valid_lft 3600 preferred_lft 1800
The comment in addrconf_dad_begin() when !IF_READY makes it look like
this is the intended behavior, but doesn't explain why:
* If the device is not ready:
* - keep it tentative if it is a permanent address.
* - otherwise, kill it.
We clearly cannot prevent userspace from doing (2), but we can make (1)
work consistently with (2).
addrconf_dad_stop() is only called in two cases: if DAD failed, or to
skip DAD when the link is down. In that second case, the fix is to avoid
deleting the address, like we already do for permanent addresses.
Fixes: 3c21edbd1137 ("[IPV6]: Defer IPv6 device initialization until the link becomes ready.")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The CDC-NCM driver can require large amounts of memory to create
skb's and this can be a problem when the memory becomes fragmented.
This especially affects embedded systems that have constrained
resources but wish to maximise the throughput of CDC-NCM with 16KiB
NTB's.
The issue is after running for a while the kernel memory can become
fragmented and it needs compacting.
If the NTB allocation is needed before the memory has been compacted
the atomic allocation can fail which can cause increased latency,
large re-transmissions or disconnections depending upon the data
being transmitted at the time.
This situation occurs for less than a second until the kernel has
compacted the memory but the failed devices can take a lot longer to
recover from the failed TX packets.
To ease this temporary situation I modified the CDC-NCM TX path to
temporarily switch into a reduced memory mode which allocates an NTB
that will fit into a USB_CDC_NCM_NTB_MIN_OUT_SIZE (default 2048 Bytes)
sized memory block and only transmit NTB's with a single network frame
until the memory situation is resolved.
Each time this issue occurs we wait for an increasing number of
reduced size allocations before requesting a full size one to not
put additional pressure on a low memory system.
Once the memory is compacted the CDC-NCM data can resume transmitting
at the normal tx_max rate once again.
Signed-off-by: Jim Baxter <jim_baxter@mentor.com>
Reviewed-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Michal Kalderon says:
====================
qed: Add iWARP support for QL4xxxx
This patch series adds iWARP support to our QL4xxxx networking adapters.
The code changes span across qed and qedr drivers, but this series contains
changes to qed only. Once the series is accepted, the qedr series will
be submitted to the rdma tree.
There is one additional qed patch which enables the iWARP, this patch is
delayed until the qedr series will be accepted.
The patches were previously sent as an RFC, and these are the first 12
patches in the RFC series:
https://www.spinics.net/lists/linux-rdma/msg51416.html
This series was tested and built against net-next.
MAINTAINERS file is not updated in this PATCH as there is a pending patch
for qedr driver update https://patchwork.kernel.org/patch/9752761.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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iWARP has different physical queue requirements than RoCE
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When computing how much memory is required for the different hw clients
iWARP protocol should be taken into account
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch introduces error handling for errors that occurred during
connection establishment.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch takes care of active/passive disconnect flows.
Disconnect flows can be initiated remotely, in which case a async event
will arrive from peer and indicated to qedr driver. These
are referred to as exceptions. When a QP is destroyed, it needs to check
that it's associated ep has been closed.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch implements the active side connect.
Offload a connection, process MPA reply and send RTR.
In some of the common passive/active functions, the active side
will work in blocking mode.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch implements the passive side connect.
It addresses pre-allocating resources, creating a connection
element upon valid SYN packet received. Calling upper layer and
implementation of the accept/reject calls.
Error handling is not part of this patch.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds the ability to add and remove listeners and identify
whether the SYN packet received is intended for iWARP or not. If
a listener is not found the SYN packet is posted back to the chip.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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iWARP handles incoming SYN packets using the ll2 interface. This patch
implements ll2 setup and teardown. Additional ll2 connections will
be used in the future which are not part of this patch series.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a new connection type for iWARP ll2 connections for setting
correct ll2 filters and connection type to FW.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make some names more generic as they will be used by iWARP too.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds iWARP support for flows that have common code
between RoCE and iWARP, such as initialization, teardown and
qp setup verbs: create, destroy, modify, query.
It introduces the iWARP specific files qed_iwarp.[ch] and
iwarp_common.h
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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iWARP personality introduced the need for differentiating in several
places in the code whether we are RoCE, iWARP or either. This
leads to introducing new macros for querying the personality.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fixed build error due to misplaced "#ifdef CONFIG_INET" (moved 1
statement up).
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Lawrence Brakmo says:
====================
bpf: Add support for sock_ops
Created a new BPF program type, BPF_PROG_TYPE_SOCK_OPS, and a corresponding
struct that allows BPF programs of this type to access some of the
socket's fields (such as IP addresses, ports, etc.) and setting
connection parameters such as buffer sizes, initial window, SYN/SYN-ACK
RTOs, etc.
Unlike current BPF program types that expect to be called at a particular
place in the network stack code, SOCK_OPS program can be called at
different places and use an "op" field to indicate the context. There
are currently two types of operations, those whose effect is through
their return value and those whose effect is through the new
bpf_setsocketop BPF helper function.
Example operands of the first type are:
BPF_SOCK_OPS_TIMEOUT_INIT
BPF_SOCK_OPS_RWND_INIT
BPF_SOCK_OPS_NEEDS_ECN
Example operands of the secont type are:
BPF_SOCK_OPS_TCP_CONNECT_CB
BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB
BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB
Current operands are only called during connection establishment so
there should not be any BPF overheads after connection establishment. The
main idea is to use connection information form both hosts, such as IP
addresses and ports to allow setting of per connection parameters to
optimize the connection's peformance.
Alghough there are already 3 mechanisms to set parameters (sysctls,
route metrics and setsockopts), this new mechanism provides some
disticnt advantages. Unlike sysctls, it can set parameters per
connection. In contrast to route metrics, it can also use port numbers
and information provided by a user level program. In addition, it could
set parameters probabilistically for evaluation purposes (i.e. do
something different on 10% of the flows and compare results with the
other 90% of the flows). Also, in cases where IPv6 addresses contain
geographic information, the rules to make changes based on the distance
(or RTT) between the hosts are much easier than route metric rules and
can be global. Finally, unlike setsockopt, it does not require
application changes and it can be updated easily at any time.
It uses the existing bpf cgroups infrastructure so the programs can be
attached per cgroup with full inheritance support. Although the bpf cgroup
framework already contains a sock related program type (BPF_PROG_TYPE_CGROUP_SOCK),
I created the new type (BPF_PROG_TYPE_SOCK_OPS) beccause the existing type
expects to be called only once during the connections's lifetime. In contrast,
the new program type will be called multiple times from different places in the
network stack code. For example, before sending SYN and SYN-ACKs to set
an appropriate timeout, when the connection is established to set congestion
control, etc. As a result it has "op" field to specify the type of operation
requested.
This patch set also includes sample BPF programs to demostrate the differnet
features.
v2: Formatting changes, rebased to latest net-next
v3: Fixed build issues, changed socket_ops to sock_ops throught,
fixed formatting issues, removed the syscall to load sock_ops
program and added functionality to use existing bpf attach and
bpf detach system calls, removed reader/writer locks in
sock_bpfops.c (used when saving sock_ops global program)
and fixed missing module refcount increment.
v4: Removed global sock_ops program and instead used existing cgroup bpf
infrastructure to support a new BPF_CGROUP_ATTCH type.
v5: fixed kbuild warning happening in bpf-cgroup.h
removed automatic converstion to host byte order from some sock_ops
fields (ipv4 and ipv6 addresses, remote port)
Added conversion to host byte order in some of the sample programs
Added to sample BPF program comments about using load_sock_ops to load
Removed is_req_sock field from bpf_sock_ops_kern and related places,
using sk_fullsock() instead.
v6: fixes to BPF helper function setsockopt (possible NULL deferencing, etc.)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update tools/include/uapi/linux/bpf.h to include changes related to new
bpf sock_ops program type.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sample BPF program, tcp_clamp_kern.c, to demostrate the use
of setting the sndcwnd clamp. This program assumes that if the
first 5.5 bytes of the host's IPv6 addresses are the same, then
the hosts are in the same datacenter and sets sndcwnd clamp to
100 packets, SYN and SYN-ACK RTOs to 10ms and send/receive buffer
sizes to 150KB.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adds a new bpf_setsockopt for TCP sockets, TCP_BPF_SNDCWND_CLAMP, which
sets the initial congestion window. It is useful to limit the sndcwnd
when the host are close to each other (small RTT).
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sample BPF program that assumes hosts are far away (i.e. large RTTs)
and sets initial cwnd and initial receive window to 40 packets,
send and receive buffers to 1.5MB.
In practice there would be a test to insure the hosts are actually
far enough away.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adds a new bpf_setsockopt for TCP sockets, TCP_BPF_IW, which sets the
initial congestion window. This can be used when the hosts are far
apart (large RTTs) and it is safe to start with a large inital cwnd.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sample BPF program that sets congestion control to dctcp when both hosts
are within the same datacenter. In this example that is assumed to be
when they have the first 5.5 bytes of their IPv6 address are the same.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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