http://bugs.dpdk.org/show_bug.cgi?id=1980
Bug ID: 1980
Summary: mempool name size assumes ring driver
Product: DPDK
Version: 26.07
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: core
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
When creating a mempool, the length of its name is checked.
RTE_MEMPOOL_NAMESIZE defines the max allowed length, and is derived from the
names of the memzones created for the mempool.
The mempool itself creates a memzone named "MP_name".
When using the Ring driver, the driver creates a memzone named "RG_MP_name".
This is what RTE_MEMPOOL_NAMESIZE is based on:
Max memzone name - strlen("RG_") - strlen("MP_").
Now, when using the Stack driver, the driver creates a memzone named
"STK_MP_name".
In this case, the RTE_MEMPOOL_NAMESIZE should be one byte less.
With a long name, creating the mempool will succeed, but populating it will
fail when the mempool driver tries to allocate the memzone for the mempool
entries.
Reducing RTE_MEMPOOL_NAMESIZE (by one) to consider the memzone name created by
the Stack driver would be an API change, and would not consider other drivers
possibly using even longer memzone names.
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