Note: lists.iovisor.org will be down for maintenance on Wednesday, October 5th, starting at 9AM Pacific Time (4PM Wednesday October 5, 2022 UTC), for approximately one hour.
LPM Trie methods not available in user space program (python)
I am trying to retrieve the keys of an LPM Trie in my user space program (similar to https://github.com/iovisor/bcc/blob/master/examples/networking/xdp/xdp_macswap_count.py) however, I am actually getting nothing.
The appropriate keys and values are inserted from the kernel space program (these are actually inserted, I have validated it by printing the values from the LPM Trie that match my packets - in the kernel space program -).
The weirdest thing is that when I substitute the LPM Trie with a BPF_HASH, I can retrieve the existing keys. According to the https://github.com/iovisor/bcc/blob/master/src/python/bcc/table.py , both LPM and BPF_HASH are inheriting the same class and share the same methods for manipulating keys and values.
If you have any thoughts or recommendations please share them.
Thank you in advance.
I am using an Ubuntu machine 16.04.6 LTS with kernel 4.15.0-60-generic and bcc (0.10.0).