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| author | Nataliia Solomko <natalirs1985@gmail.com> | 2026-08-04 17:40:11 +0300 |
|---|---|---|
| committer | Nataliia Solomko <natalirs1985@gmail.com> | 2026-08-31 13:45:52 +0300 |
| commit | aa1eb26e371e14dad0df002bb8ba784e7c7f6f82 (patch) | |
| tree | cc19b600492eec95c3676fe813af9e9aa888b5d7 /data | |
| parent | 2c269ef450f88690d03970fcafb1dbaa8b3b7f54 (diff) | |
| download | vyos-1x-aa1eb26e371e14dad0df002bb8ba784e7c7f6f82.tar.gz vyos-1x-aa1eb26e371e14dad0df002bb8ba784e7c7f6f82.zip | |
vpp: T9146: Enable DPDK no-multi-seg when a full frame fits the buffer
Disabling DPDK multi-segment buffers (no-multi-seg) lets VPP receive each
frame into a single buffer, increasing forwarding throughput. The frame
must then fit the buffer 'data-size', so 'no-multi-seg' is computed: it is
enabled only while the largest MTU across all VPP-bound interfaces, plus
its L2 framing overhead (26 bytes), fits 'data-size'. Otherwise VPP keeps
multi-seg and Jumbo frames still work without a larger buffer.
Changing the MTU of a VPP-bound interface can flip the flag, so
interfaces_ethernet reconfigures VPP when it changes, via an initial
dependency (set_dependents_initial) to avoid a cycle with the existing
vpp -> ethernet dependency.
Diffstat (limited to 'data')
| -rw-r--r-- | data/templates/vpp/startup.conf.j2 | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/data/templates/vpp/startup.conf.j2 b/data/templates/vpp/startup.conf.j2 index 82d3753ae..e8f755c9c 100644 --- a/data/templates/vpp/startup.conf.j2 +++ b/data/templates/vpp/startup.conf.j2 @@ -178,6 +178,9 @@ dpdk { {% endif %} {% endfor %} uio-bind-force +{% if no_multi_seg is vyos_defined %} + no-multi-seg +{% endif %} } {% if ipsec_acceleration is vyos_defined %} |