From: Yasufumi Ogawa <yasufum.o@gmail.com>
To: David Marchand <david.marchand@redhat.com>
Cc: "Burakov, Anatoly" <anatoly.burakov@intel.com>,
"Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
dev <dev@dpdk.org>, dpdk stable <stable@dpdk.org>,
Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>
Subject: Re: [dpdk-stable] [PATCH v7 1/1] fbarray: fix duplicated fbarray file in secondary
Date: Wed, 27 Nov 2019 04:40:28 +0900 [thread overview]
Message-ID: <bf8ddd01-78aa-18c0-1442-fcd1ab9f5164@gmail.com> (raw)
In-Reply-To: <CAJFAV8zZ91f05mbw5jnDiOoWD7_TLVag_r4F-2x+=Ydn0zf-VA@mail.gmail.com>
Hi David,
Sorry for slow reply.
On 2019/11/14 21:27, David Marchand wrote:
> On Thu, Nov 14, 2019 at 12:42 PM Yasufumi Ogawa <yasufum.o@gmail.com> wrote:
>>
>> On 2019/11/14 2:01, Burakov, Anatoly wrote:
>>> On 13-Nov-19 9:43 PM, yasufum.o@gmail.com wrote:
>>>> From: Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>
>>>>
>>>> In secondary_msl_create_walk(), it creates a file for fbarrays with its
>>>> PID for reserving unique name among secondary processes. However, it
>>>> does not work if several secondaries run as app containers because each
>>>> of containerized secondary has PID 1, and failed to reserve unique name
>>>> other than first one. To reserve unique name in each of containers, use
>>>> hostname in addition to PID.
>>>>
>>>> Cc: stable@dpdk.org
>>>>
>>>> Signed-off-by: Yasufumi Ogawa <yasufum.o@gmail.com>
>>>> ---
>>>> lib/librte_eal/linux/eal/eal_memalloc.c | 16 +++++++++++++---
>>>> 1 file changed, 13 insertions(+), 3 deletions(-)
>>>>
>>>> diff --git a/lib/librte_eal/linux/eal/eal_memalloc.c
>>>> b/lib/librte_eal/linux/eal/eal_memalloc.c
>>>> index af6d0d023..11de6d4d6 100644
>>>> --- a/lib/librte_eal/linux/eal/eal_memalloc.c
>>>> +++ b/lib/librte_eal/linux/eal/eal_memalloc.c
>>>> @@ -1365,6 +1365,12 @@ secondary_msl_create_walk(const struct
>>>> rte_memseg_list *msl,
>>>> struct rte_memseg_list *primary_msl, *local_msl;
>>>> char name[PATH_MAX];
>>>> int msl_idx, ret;
>>>> + char hostname[HOST_NAME_MAX+1] = { 0 };
>>>> + /* filename of secondary's fbarray is defined such as
>>>> + * "fbarray_memseg-1048576k-0-0_PID_HOSTNAME" and length of PID
>>>> + * can be 7 digits maximumly.
>>>> + */
>>>> + int fbarray_sec_name_len = 32 + 7 + 1 + HOST_NAME_MAX + 1;
>>>
>>> What does 32 stand for? Maybe #define both 32 and 7 values?
>> Hi Anatoly,
>>
>> Thank you for your comments! If my understanding is correct, the prefix
>> "fbarray_memseg-1048576k-0-0_" is 28 digits and it could be larger if
>> using the size of hugepage or the number of NUMA nodes are larger
>> possibly. However, I think 32 digits is still enough.
>>
>> > Maybe #define both 32 and 7 values?
>> Yes. I think it should be better to use #define if this values are
>> referred several times.
>
>
> We can truncate to RTE_FBARRAY_NAME_LEN in all cases.
> And iiuc, rte_fbarray_init will refuse any longer name anyway.
Could I confirm the issue? I've understood that it is failed to validate
the name of fbarray in fully_validate() at
"lib/librte_eal/common/eal_common_fbarray.c:697".
static int
fully_validate(const char *name, unsigned int elt_sz, unsigned int len)
{
if (name == NULL || elt_sz == 0 || len == 0 || len > INT_MAX) {
rte_errno = EINVAL;
return -1;
}
if (strnlen(name, RTE_FBARRAY_NAME_LEN) == RTE_FBARRAY_NAME_LEN) {
rte_errno = ENAMETOOLONG;
return -1;
}
return 0;
}
I should overwrite the definition of RTE_FBARRAY_NAME_LEN as previous
patch in this case, and it causes an ABI breakage, right? If so, I would
like to make the change and give up to update stable release.
Thanks,
Yasufumi
>
>
next prev parent reply other threads:[~2019-11-26 19:40 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 1:59 [dpdk-stable] [PATCH] fbarray: get fbarrays from containerized secondary ogawa.yasufumi
2019-04-16 3:43 ` [dpdk-stable] [PATCH v2 0/1] Get " ogawa.yasufumi
2019-04-16 3:43 ` [dpdk-stable] [PATCH v2 1/1] fbarray: get " ogawa.yasufumi
2019-07-04 20:17 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2019-07-05 8:53 ` [dpdk-stable] " Burakov, Anatoly
2019-07-09 10:22 ` [dpdk-stable] [dpdk-dev] " Yasufumi Ogawa
2019-07-09 10:24 ` Burakov, Anatoly
2019-07-09 10:26 ` Burakov, Anatoly
2019-07-11 9:37 ` Yasufumi Ogawa
2019-07-11 9:43 ` Burakov, Anatoly
2019-07-11 10:31 ` [dpdk-stable] [PATCH v3 0/1] " yasufum.o
2019-07-11 10:31 ` [dpdk-stable] [PATCH v3 1/1] " yasufum.o
2019-07-11 10:53 ` Burakov, Anatoly
2019-07-11 11:57 ` Yasufumi Ogawa
2019-07-11 13:14 ` Burakov, Anatoly
2019-07-12 2:22 ` Yasufumi Ogawa
2019-07-22 1:06 ` Ogawa Yasufumi
2019-07-22 9:33 ` Burakov, Anatoly
2019-07-22 9:25 ` Burakov, Anatoly
2019-07-24 8:20 ` [dpdk-stable] [PATCH v4 0/1] " yasufum.o
2019-07-24 8:20 ` [dpdk-stable] [PATCH v4 1/1] " yasufum.o
2019-07-24 9:59 ` Burakov, Anatoly
2019-07-30 8:16 ` Thomas Monjalon
2019-07-30 9:18 ` Burakov, Anatoly
2019-07-31 5:48 ` Yasufumi Ogawa
2019-10-11 9:36 ` David Marchand
2019-10-25 15:36 ` David Marchand
2019-10-25 19:54 ` Yasufumi Ogawa
2019-10-26 16:15 ` David Marchand
2019-10-26 18:11 ` Yasufumi Ogawa
2019-10-28 8:07 ` [dpdk-stable] [PATCH v5 0/1] fbarray: fix duplicated fbarray file in secondary yasufum.o
2019-10-28 8:07 ` [dpdk-stable] [PATCH v5 1/1] " yasufum.o
2019-10-29 12:03 ` [dpdk-stable] [dpdk-dev] " Ananyev, Konstantin
2019-10-30 13:42 ` Yasufumi Ogawa
2019-10-30 19:00 ` Ananyev, Konstantin
2019-10-31 10:03 ` Yasufumi Ogawa
2019-10-31 10:32 ` Ananyev, Konstantin
2019-11-01 9:04 ` [dpdk-stable] [PATCH v6 0/1] " yasufum.o
2019-11-01 9:04 ` [dpdk-stable] [PATCH v6 1/1] " yasufum.o
2019-11-01 12:01 ` Ananyev, Konstantin
2019-11-04 10:20 ` Burakov, Anatoly
2019-11-05 10:13 ` David Marchand
2019-11-05 11:31 ` Burakov, Anatoly
2019-11-05 11:41 ` Ananyev, Konstantin
2019-11-06 10:37 ` Burakov, Anatoly
2019-11-08 3:19 ` Yasufumi Ogawa
2019-11-13 21:43 ` [dpdk-stable] [PATCH v7 0/1] " yasufum.o
2019-11-13 21:43 ` [dpdk-stable] [PATCH v7 1/1] " yasufum.o
2019-11-14 10:01 ` Burakov, Anatoly
2019-11-14 11:42 ` Yasufumi Ogawa
2019-11-14 12:27 ` David Marchand
2019-11-26 19:40 ` Yasufumi Ogawa [this message]
2019-11-27 10:26 ` Burakov, Anatoly
2019-11-14 12:55 ` David Marchand
2019-11-14 17:32 ` Ananyev, Konstantin
2023-06-13 16:51 ` [dpdk-dev] [PATCH] fbarray: get fbarrays from containerized secondary Stephen Hemminger
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