https://bugs.dpdk.org/show_bug.cgi?id=1638
Bug ID: 1638
Summary: Differences in how different Intel NICs handle maximum
packet length for jumbo frame
Product: DPDK
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: ethdev
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
10 Gigabit Ethernet devices from Intel do not take VLAN tags into account when
calculating packet size while Gigabit Ethernet devices do so for jumbo frames.
Implication:
When receiving packets with VLAN tags, the actual maximum size of useful
payload that Intel Gigabit Ethernet devices are able to receive is 4 bytes (or
8 bytes in the case of packets with extended VLAN tags) less than that of Intel
10 Gigabit Ethernet devices.
Resolution/Workaround:
Increase the configured maximum packet size when using Intel Gigabit Ethernet
devices.
Affected Environment/Platform:
All.
Driver/Module:
Poll Mode Driver (PMD).
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