[PATCH dpdk v2 2/3] hash: free replaced data on overwrite when RCU is configured

[Robin Jarry]

Robin Jarry, Mar 04, 2026 at 12:45:
>> With multiple goto labels that function becomes even more complicated.
>> Can we just add old_data as an extra parameter: 
>> __rte_hash_add_key_with_hash(const struct rte_hash *h, const void *key,
>>                    hash_sig_t sig, void *data, void **old_data)
>> And make the callers to invoke __hash_rcu_auto_free_old_data()?
>
> I'll see what I can do for v3.

Unfortunately, I need to pass old_data in order to make the new replace
API work.

Maybe we can drop the new API altogether and have a much simpler patch.

What do you think?