From: Max Tottenham <mtottenh@akamai.com>
To: <netdev@vger.kernel.org>
Cc: <stephen@networkplumber.org>, <johunt@akamai.com>,
Max Tottenham <mtottenh@akamai.com>
Subject: [RFC PATCH v2 iproute2 0/1] Add ability to specify eBPF map pin path
Date: Fri, 26 May 2023 11:09:20 -0400 [thread overview]
Message-ID: <20230526150921.338906-1-mtottenh@akamai.com> (raw)
In-Reply-To: <20230503173348.703437-1-mtottenh@akamai.com>
We have a use case where we have several different applications composed of
sets of eBPF programs (programs that may be attached at the TC/XDP layers),
that need to share maps and not conflict with each other.
For XDP based programs, we are using the xdp-loader from the xdp-tools
project[1], it exposes an option to set the 'pin-path' for a given program.
However, programs loaded via tc don't appear to have that ability, all I have
found is the use of LIBBPF_PIN_BY_NAME or the older
PIN_OBJECT_NS/PIN_GLOBAL_NS, but those don't let the user specify the path.
I've whipped up a quick patch to be able to pass along a 'pin_path' similar to
the xdp-loader. I don't know if this is the *right* approach so I'm more than
happy to be pointed in the right direction.
Thanks
Max
[1] https://github.com/xdp-project/xdp-tools/tree/master/xdp-loader
Changes since V1:
* Remove debug code.
* Update man page.
Max Tottenham (1):
tc/f_bpf.c: Add ability to specify eBPF map pin path
include/bpf_util.h | 1 +
lib/bpf_legacy.c | 11 +++++++++--
lib/bpf_libbpf.c | 14 +++++++-------
man/man8/tc-bpf.8 | 8 ++++++++
tc/f_bpf.c | 4 +++-
5 files changed, 28 insertions(+), 10 deletions(-)
--
2.25.1
next prev parent reply other threads:[~2023-05-26 15:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-03 17:33 [RFC PATCH iproute2] Add ability to specify eBPF pin path Max Tottenham
2023-05-03 17:33 ` Max Tottenham
2023-05-03 18:50 ` Stephen Hemminger
2023-05-03 18:51 ` Stephen Hemminger
2023-05-26 15:09 ` Max Tottenham [this message]
2023-05-26 15:09 ` [RFC PATCH v2 iproute2 1/1] tc/f_bpf.c: Add ability to specify eBPF map " Max Tottenham
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