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2020-11-12net/ncsi: Fix netlink registrationJoel Stanley1-19/+3
If a user unbinds and re-binds a NC-SI aware driver the kernel will attempt to register the netlink interface at runtime. The structure is marked __ro_after_init so registration fails spectacularly at this point. # echo 1e660000.ethernet > /sys/bus/platform/drivers/ftgmac100/unbind # echo 1e660000.ethernet > /sys/bus/platform/drivers/ftgmac100/bind ftgmac100 1e660000.ethernet: Read MAC address 52:54:00:12:34:56 from chip ftgmac100 1e660000.ethernet: Using NCSI interface 8<--- cut here --- Unable to handle kernel paging request at virtual address 80a8f858 pgd = 8c768dd6 [80a8f858] *pgd=80a0841e(bad) Internal error: Oops: 80d [#1] SMP ARM CPU: 0 PID: 116 Comm: sh Not tainted 5.10.0-rc3-next-20201111-00003-gdd25b227ec1e #51 Hardware name: Generic DT based system PC is at genl_register_family+0x1f8/0x6d4 LR is at 0xff26ffff pc : [<8073f930>] lr : [<ff26ffff>] psr: 20000153 sp : 8553bc80 ip : 81406244 fp : 8553bd04 r10: 8085d12c r9 : 80a8f73c r8 : 85739000 r7 : 00000017 r6 : 80a8f860 r5 : 80c8ab98 r4 : 80a8f858 r3 : 00000000 r2 : 00000000 r1 : 81406130 r0 : 00000017 Flags: nzCv IRQs on FIQs off Mode SVC_32 ISA ARM Segment none Control: 00c5387d Table: 85524008 DAC: 00000051 Process sh (pid: 116, stack limit = 0x1f1988d6) ... Backtrace: [<8073f738>] (genl_register_family) from [<80860ac0>] (ncsi_init_netlink+0x20/0x48) r10:8085d12c r9:80c8fb0c r8:85739000 r7:00000000 r6:81218000 r5:85739000 r4:8121c000 [<80860aa0>] (ncsi_init_netlink) from [<8085d740>] (ncsi_register_dev+0x1b0/0x210) r5:8121c400 r4:8121c000 [<8085d590>] (ncsi_register_dev) from [<805a8060>] (ftgmac100_probe+0x6e0/0x778) r10:00000004 r9:80950228 r8:8115bc10 r7:8115ab00 r6:9eae2c24 r5:813b6f88 r4:85739000 [<805a7980>] (ftgmac100_probe) from [<805355ec>] (platform_drv_probe+0x58/0xa8) r9:80c76bb0 r8:00000000 r7:80cd4974 r6:80c76bb0 r5:8115bc10 r4:00000000 [<80535594>] (platform_drv_probe) from [<80532d58>] (really_probe+0x204/0x514) r7:80cd4974 r6:00000000 r5:80cd4868 r4:8115bc10 Jakub pointed out that ncsi_register_dev is obviously broken, because there is only one family so it would never work if there was more than one ncsi netdev. Fix the crash by registering the netlink family once on boot, and drop the code to unregister it. Fixes: 955dc68cb9b2 ("net/ncsi: Add generic netlink family") Signed-off-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Link: https://lore.kernel.org/r/20201112061210.914621-1-joel@jms.id.au Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-10-02genetlink: move to smaller ops wherever possibleJakub Kicinski1-3/+3
Bulk of the genetlink users can use smaller ops, move them. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner1-5/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-27genetlink: optionally validate strictly/dumpsJohannes Berg1-0/+6
Add options to strictly validate messages and dump messages, sometimes perhaps validating dump messages non-strictly may be required, so add an option for that as well. Since none of this can really be applied to existing commands, set the options everwhere using the following spatch: @@ identifier ops; expression X; @@ struct genl_ops ops[] = { ..., { .cmd = X, + .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, ... }, ... }; For new commands one should just not copy the .validate 'opt-out' flags and thus get strict validation. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-27netlink: make validation more configurable for future strictnessJohannes Berg1-2/+2
We currently have two levels of strict validation: 1) liberal (default) - undefined (type >= max) & NLA_UNSPEC attributes accepted - attribute length >= expected accepted - garbage at end of message accepted 2) strict (opt-in) - NLA_UNSPEC attributes accepted - attribute length >= expected accepted Split out parsing strictness into four different options: * TRAILING - check that there's no trailing data after parsing attributes (in message or nested) * MAXTYPE - reject attrs > max known type * UNSPEC - reject attributes with NLA_UNSPEC policy entries * STRICT_ATTRS - strictly validate attribute size The default for future things should be *everything*. The current *_strict() is a combination of TRAILING and MAXTYPE, and is renamed to _deprecated_strict(). The current regular parsing has none of this, and is renamed to *_parse_deprecated(). Additionally it allows us to selectively set one of the new flags even on old policies. Notably, the UNSPEC flag could be useful in this case, since it can be arranged (by filling in the policy) to not be an incompatible userspace ABI change, but would then going forward prevent forgetting attribute entries. Similar can apply to the POLICY flag. We end up with the following renames: * nla_parse -> nla_parse_deprecated * nla_parse_strict -> nla_parse_deprecated_strict * nlmsg_parse -> nlmsg_parse_deprecated * nlmsg_parse_strict -> nlmsg_parse_deprecated_strict * nla_parse_nested -> nla_parse_nested_deprecated * nla_validate_nested -> nla_validate_nested_deprecated Using spatch, of course: @@ expression TB, MAX, HEAD, LEN, POL, EXT; @@ -nla_parse(TB, MAX, HEAD, LEN, POL, EXT) +nla_parse_deprecated(TB, MAX, HEAD, LEN, POL, EXT) @@ expression NLH, HDRLEN, TB, MAX, POL, EXT; @@ -nlmsg_parse(NLH, HDRLEN, TB, MAX, POL, EXT) +nlmsg_parse_deprecated(NLH, HDRLEN, TB, MAX, POL, EXT) @@ expression NLH, HDRLEN, TB, MAX, POL, EXT; @@ -nlmsg_parse_strict(NLH, HDRLEN, TB, MAX, POL, EXT) +nlmsg_parse_deprecated_strict(NLH, HDRLEN, TB, MAX, POL, EXT) @@ expression TB, MAX, NLA, POL, EXT; @@ -nla_parse_nested(TB, MAX, NLA, POL, EXT) +nla_parse_nested_deprecated(TB, MAX, NLA, POL, EXT) @@ expression START, MAX, POL, EXT; @@ -nla_validate_nested(START, MAX, POL, EXT) +nla_validate_nested_deprecated(START, MAX, POL, EXT) @@ expression NLH, HDRLEN, MAX, POL, EXT; @@ -nlmsg_validate(NLH, HDRLEN, MAX, POL, EXT) +nlmsg_validate_deprecated(NLH, HDRLEN, MAX, POL, EXT) For this patch, don't actually add the strict, non-renamed versions yet so that it breaks compile if I get it wrong. Also, while at it, make nla_validate and nla_parse go down to a common __nla_validate_parse() function to avoid code duplication. Ultimately, this allows us to have very strict validation for every new caller of nla_parse()/nlmsg_parse() etc as re-introduced in the next patch, while existing things will continue to work as is. In effect then, this adds fully strict validation for any new command. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-27netlink: make nla_nest_start() add NLA_F_NESTED flagMichal Kubecek1-6/+6
Even if the NLA_F_NESTED flag was introduced more than 11 years ago, most netlink based interfaces (including recently added ones) are still not setting it in kernel generated messages. Without the flag, message parsers not aware of attribute semantics (e.g. wireshark dissector or libmnl's mnl_nlmsg_fprintf()) cannot recognize nested attributes and won't display the structure of their contents. Unfortunately we cannot just add the flag everywhere as there may be userspace applications which check nlattr::nla_type directly rather than through a helper masking out the flags. Therefore the patch renames nla_nest_start() to nla_nest_start_noflag() and introduces nla_nest_start() as a wrapper adding NLA_F_NESTED. The calls which add NLA_F_NESTED manually are rewritten to use nla_nest_start(). Except for changes in include/net/netlink.h, the patch was generated using this semantic patch: @@ expression E1, E2; @@ -nla_nest_start(E1, E2) +nla_nest_start_noflag(E1, E2) @@ expression E1, E2; @@ -nla_nest_start_noflag(E1, E2 | NLA_F_NESTED) +nla_nest_start(E1, E2) Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Acked-by: Jiri Pirko <jiri@mellanox.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-22genetlink: make policy common to familyJohannes Berg1-6/+1
Since maxattr is common, the policy can't really differ sanely, so make it common as well. The only user that did in fact manage to make a non-common policy is taskstats, which has to be really careful about it (since it's still using a common maxattr!). This is no longer supported, but we can fake it using pre_doit. This reduces the size of e.g. nl80211.o (which has lots of commands): text data bss dec hex filename 398745 14323 2240 415308 6564c net/wireless/nl80211.o (before) 397913 14331 2240 414484 65314 net/wireless/nl80211.o (after) -------------------------------- -832 +8 0 -824 Which is obviously just 8 bytes for each command, and an added 8 bytes for the new policy pointer. I'm not sure why the ops list is counted as .text though. Most of the code transformations were done using the following spatch: @ops@ identifier OPS; expression POLICY; @@ struct genl_ops OPS[] = { ..., { - .policy = POLICY, }, ... }; @@ identifier ops.OPS; expression ops.POLICY; identifier fam; expression M; @@ struct genl_family fam = { .ops = OPS, .maxattr = M, + .policy = POLICY, ... }; This also gets rid of devlink_nl_cmd_region_read_dumpit() accessing the cb->data as ops, which we want to change in a later genl patch. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-16net: ncsi: fix a missing check for nla_nest_startKangjie Lu1-0/+4
nla_nest_start may fail and thus deserves a check. The fix returns -EMSGSIZE in case it fails. Signed-off-by: Kangjie Lu <kjlu@umn.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-17net/ncsi: Configure multi-package, multi-channel modes with failoverSamuel Mendoza-Jonas1-28/+193
This patch extends the ncsi-netlink interface with two new commands and three new attributes to configure multiple packages and/or channels at once, and configure specific failover modes. NCSI_CMD_SET_PACKAGE mask and NCSI_CMD_SET_CHANNEL_MASK set a whitelist of packages or channels allowed to be configured with the NCSI_ATTR_PACKAGE_MASK and NCSI_ATTR_CHANNEL_MASK attributes respectively. If one of these whitelists is set only packages or channels matching the whitelist are considered for the channel queue in ncsi_choose_active_channel(). These commands may also use the NCSI_ATTR_MULTI_FLAG to signal that multiple packages or channels may be configured simultaneously. NCSI hardware arbitration (HWA) must be available in order to enable multi-package mode. Multi-channel mode is always available. If the NCSI_ATTR_CHANNEL_ID attribute is present in the NCSI_CMD_SET_CHANNEL_MASK command the it sets the preferred channel as with the NCSI_CMD_SET_INTERFACE command. The combination of preferred channel and channel whitelist defines a primary channel and the allowed failover channels. If the NCSI_ATTR_MULTI_FLAG attribute is also present then the preferred channel is configured for Tx/Rx and the other channels are enabled only for Rx. Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-17net/ncsi: Reset channel state in ncsi_start_dev()Samuel Mendoza-Jonas1-6/+6
When the NCSI driver is stopped with ncsi_stop_dev() the channel monitors are stopped and the state set to "inactive". However the channels are still configured and active from the perspective of the network controller. We should suspend each active channel but in the context of ncsi_stop_dev() the transmit queue has been or is about to be stopped so we won't have time to do so. Instead when ncsi_start_dev() is called if the NCSI topology has already been probed then call ncsi_reset_dev() to suspend any channels that were previously active. This resets the network controller to a known state, provides an up to date view of channel link state, and makes sure that mode flags such as NCSI_MODE_TX_ENABLE are properly reset. In addition to ncsi_start_dev() use ncsi_reset_dev() in ncsi-netlink.c to update the channel configuration more cleanly. Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-15net/ncsi: Extend NC-SI Netlink interface to allow user space to send NC-SI ↵Justin.Lee1@Dell.com1-0/+204
command The new command (NCSI_CMD_SEND_CMD) is added to allow user space application to send NC-SI command to the network card. Also, add a new attribute (NCSI_ATTR_DATA) for transferring request and response. The work flow is as below. Request: User space application -> Netlink interface (msg) -> new Netlink handler - ncsi_send_cmd_nl() -> ncsi_xmit_cmd() Response: Response received - ncsi_rcv_rsp() -> internal response handler - ncsi_rsp_handler_xxx() -> ncsi_rsp_handler_netlink() -> ncsi_send_netlink_rsp () -> Netlink interface (msg) -> user space application Command timeout - ncsi_request_timeout() -> ncsi_send_netlink_timeout () -> Netlink interface (msg with zero data length) -> user space application Error: Error detected -> ncsi_send_netlink_err () -> Netlink interface (err msg) -> user space application Signed-off-by: Justin Lee <justin.lee1@dell.com> Reviewed-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-29net/ncsi: remove duplicated include from ncsi-netlink.cYueHaibing1-1/+0
Remove duplicated include. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-22net/ncsi: Fixup .dumpit message flags and ID check in Netlink handlerSamuel Mendoza-Jonas1-2/+2
The ncsi_pkg_info_all_nl() .dumpit handler is missing the NLM_F_MULTI flag, causing additional package information after the first to be lost. Also fixup a sanity check in ncsi_write_package_info() to reject out of range package IDs. Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
Filling in the padding slot in the bpf structure as a bug fix in 'ne' overlapped with actually using that padding area for something in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-31net/ncsi: Fix array size in dumpit handlerSamuel Mendoza-Jonas1-1/+1
With CONFIG_CC_STACKPROTECTOR enabled the kernel panics as below when parsing a NCSI_CMD_PKG_INFO command: [ 150.149711] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: 805cff08 [ 150.149711] [ 150.159919] CPU: 0 PID: 1301 Comm: ncsi-netlink Not tainted 4.13.16-468cbec6d2c91239332cb91b1f0a73aafcb6f0c6 #1 [ 150.170004] Hardware name: Generic DT based system [ 150.174852] [<80109930>] (unwind_backtrace) from [<80106bc4>] (show_stack+0x20/0x24) [ 150.182641] [<80106bc4>] (show_stack) from [<805d36e4>] (dump_stack+0x20/0x28) [ 150.189888] [<805d36e4>] (dump_stack) from [<801163ac>] (panic+0xdc/0x278) [ 150.196780] [<801163ac>] (panic) from [<801162cc>] (__stack_chk_fail+0x20/0x24) [ 150.204111] [<801162cc>] (__stack_chk_fail) from [<805cff08>] (ncsi_pkg_info_all_nl+0x244/0x258) [ 150.212912] [<805cff08>] (ncsi_pkg_info_all_nl) from [<804f939c>] (genl_lock_dumpit+0x3c/0x54) [ 150.221535] [<804f939c>] (genl_lock_dumpit) from [<804f873c>] (netlink_dump+0xf8/0x284) [ 150.229550] [<804f873c>] (netlink_dump) from [<804f8d44>] (__netlink_dump_start+0x124/0x17c) [ 150.237992] [<804f8d44>] (__netlink_dump_start) from [<804f9880>] (genl_rcv_msg+0x1c8/0x3d4) [ 150.246440] [<804f9880>] (genl_rcv_msg) from [<804f9174>] (netlink_rcv_skb+0xd8/0x134) [ 150.254361] [<804f9174>] (netlink_rcv_skb) from [<804f96a4>] (genl_rcv+0x30/0x44) [ 150.261850] [<804f96a4>] (genl_rcv) from [<804f7790>] (netlink_unicast+0x198/0x234) [ 150.269511] [<804f7790>] (netlink_unicast) from [<804f7ffc>] (netlink_sendmsg+0x368/0x3b0) [ 150.277783] [<804f7ffc>] (netlink_sendmsg) from [<804abea4>] (sock_sendmsg+0x24/0x34) [ 150.285625] [<804abea4>] (sock_sendmsg) from [<804ac1dc>] (___sys_sendmsg+0x244/0x260) [ 150.293556] [<804ac1dc>] (___sys_sendmsg) from [<804ad98c>] (__sys_sendmsg+0x5c/0x9c) [ 150.301400] [<804ad98c>] (__sys_sendmsg) from [<804ad9e4>] (SyS_sendmsg+0x18/0x1c) [ 150.308984] [<804ad9e4>] (SyS_sendmsg) from [<80102640>] (ret_fast_syscall+0x0/0x3c) [ 150.316743] ---[ end Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: 805cff08 This turns out to be because the attrs array in ncsi_pkg_info_all_nl() is initialised to a length of NCSI_ATTR_MAX which is the maximum attribute number, not the number of attributes. Fixes: 955dc68cb9b2 ("net/ncsi: Add generic netlink family") Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-29net: remove unnecessary genlmsg_cancel() callsYueHaibing1-1/+0
the message be freed immediately, no need to trim it back to the previous size. Inspired by commit 7a9b3ec1e19f ("nl80211: remove unnecessary genlmsg_cancel() calls") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17net/ncsi: Refactor MAC, VLAN filtersSamuel Mendoza-Jonas1-13/+7
The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-27net/ncsi: check for null return from call to nla_nest_startColin Ian King1-0/+4
The call to nla_nest_start calls nla_put which can lead to a NULL return so it's possible for attr to become NULL and we can potentially get a NULL pointer dereference on attr. Fix this by checking for a NULL return. Detected by CoverityScan, CID#1466125 ("Dereference null return") Fixes: 955dc68cb9b2 ("net/ncsi: Add generic netlink family") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-08net/ncsi: unlock on error in ncsi_set_interface_nl()Dan Carpenter1-0/+2
There are two error paths which are missing unlocks in this function. Fixes: 955dc68cb9b2 ("net/ncsi: Add generic netlink family") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-08net/ncsi: use kfree_skb() instead of kfree()Dan Carpenter1-2/+2
We're supposed to use kfree_skb() to free these sk_buffs. Fixes: 955dc68cb9b2 ("net/ncsi: Add generic netlink family") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-05net/ncsi: Add generic netlink familySamuel Mendoza-Jonas1-0/+421
Add a generic netlink family for NCSI. This supports three commands; NCSI_CMD_PKG_INFO which returns information on packages and their associated channels, NCSI_CMD_SET_INTERFACE which allows a specific package or package/channel combination to be set as the preferred choice, and NCSI_CMD_CLEAR_INTERFACE which clears any preferred setting. Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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