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From: venkatesh bs <venki.bsv@gmail.com>
Date: Wed, 6 Jul 2022 09:15:39 +0530
Message-ID: <CAM3UhOgDzys5nAYWSmr7LqcV8EFufGNO35rfCaVtQdt1PfHWqg@mail.gmail.com>
Subject: clarification on RTE_HASH_EXTRA_FLAGS_RW_CONCURRENCY_LF flag
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Content-Type: text/plain; charset="UTF-8"

Hi All,

In multithreaded/Multicore  environment can we use
RTE_HASH_EXTRA_FLAGS_RW_CONCURRENCY_LF
independently,
or this flag should always be used with
RTE_HASH_EXTRA_FLAGS_MULTI_WRITER_ADD.

We are trying to create and access the hash table with
RTE_HASH_EXTRA_FLAGS_RW_CONCURRENCY_LF
only.
We are getting crashes in multi core environments , we debugged nothing
wrong in the application , everything looks good.

We call rte_hash_del_key() first and from the returned position we are
calling rte_hash_free_key_with_position().

Please let me know if we missed something.

Thanks,
Venkatesh.

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Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr"><font face=3D"monospace">Hi All,</font><div><font face=3D"=
monospace"><br></font></div><div><font face=3D"monospace">In multithreaded/=
Multicore=C2=A0 environment=C2=A0can we use=C2=A0<span style=3D"background-=
color:rgb(252,252,252);color:rgb(64,64,64);font-size:16px">RTE_HASH_EXTRA_F=
LAGS_RW_CONCURRENCY_LF independently,=C2=A0</span></font></div><div><font f=
ace=3D"monospace"><span style=3D"background-color:rgb(252,252,252);color:rg=
b(64,64,64);font-size:16px">or this flag should always be used with=C2=A0</=
span><span style=3D"background-color:rgb(252,252,252);color:rgb(64,64,64);f=
ont-size:16px">RTE_HASH_EXTRA_FLAGS_MULTI_WRITER_ADD.</span></font></div><d=
iv><span style=3D"background-color:rgb(252,252,252);color:rgb(64,64,64);fon=
t-size:16px"><font face=3D"monospace"><br></font></span></div><div><font fa=
ce=3D"monospace"><span style=3D"background-color:rgb(252,252,252);color:rgb=
(64,64,64);font-size:16px">We are trying to create and access the hash tabl=
e with=C2=A0</span><span style=3D"background-color:rgb(252,252,252);color:r=
gb(64,64,64);font-size:16px">RTE_HASH_EXTRA_FLAGS_RW_CONCURRENCY_LF only.</=
span></font></div><div><span style=3D"background-color:rgb(252,252,252);col=
or:rgb(64,64,64);font-size:16px"><font face=3D"monospace">We are getting cr=
ashes in multi core environments , we debugged nothing wrong in the applica=
tion , everything looks good.</font></span></div><div><span style=3D"backgr=
ound-color:rgb(252,252,252);color:rgb(64,64,64);font-size:16px"><font face=
=3D"monospace"><br></font></span></div><div><font face=3D"monospace"><span =
style=3D"background-color:rgb(252,252,252);color:rgb(64,64,64);font-size:16=
px">We call=C2=A0</span>rte_hash_del_key() first and from the returned posi=
tion we are calling=C2=A0rte_hash_free_key_with_position().</font></div><di=
v><font face=3D"monospace"><br></font></div><div><font face=3D"monospace">P=
lease let me know if we missed something.</font></div><div><font face=3D"mo=
nospace"><br></font></div><div><font face=3D"monospace">Thanks,</font></div=
><div><font face=3D"monospace">Venkatesh.</font></div></div>

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