This series makes several improvements to the null PMD driver and
adds comprehensive unit tests.
The series:
1) Cleans up the info_get callback by removing redundant argument
checks and using proper constants. Also sets min_rx_bufsize to
the configured packet_size, enabling the ethdev layer to reject
undersized mbuf pools.
2) Adds proper validation for numeric devargs (packet_size,
packet_copy, no_rx) using a common helper function that rejects
empty strings, trailing non-numeric characters, and out-of-range
values.
3) Removes redundant argument validation in dev_ops callbacks that
is already performed by the ethdev layer.
4) Adds VLAN insert and strip offload support. The driver advertises
RX VLAN strip and TX VLAN insert capabilities. When VLAN strip is
enabled, received mbufs are marked with the appropriate flags and
a dummy vlan_tci. The vlan_offload_set dev_op is implemented for
runtime toggling via rte_eth_dev_set_vlan_offload().
5) Extends the packet burst generator to support larger packets
by widening parameter types from uint8_t to uint16_t.
6) Adds a comprehensive unit test for the null PMD covering RX/TX,
statistics, custom packet sizes, copy mode, no-RX mode, link
status, device info, RSS, RETA, VLAN strip, VLAN insert, and
multi-threaded TX.
Patches 1, 2, and 3 are marked for stable backport as they fix issues
where invalid mbufs could be generated or invalid arguments silently
accepted.
v11:
- Add VLAN insert and strip offload support to the driver
- Rebase to main
v10:
- Fix mbuf leak in eth_null_copy_tx
v9:
- Consolidated argument validation into a single patch with
common helper function get_unsigned_arg()
- Merged pool vs packet size check into the cleanup patch
- Removed redundant argument validation in a separate patch
- Reordered patches to put fixes before tests
Stephen Hemminger (7):
net/null: fix missing mbuf leakage in the copy transmit
net/null: cleanup info response
net/null: validate the numeric devargs
net/null: remove redundant argument validation
test: support larger packet sizes in burst generator
test: add a test for null PMD
net/null: add VLAN insert and strip offload support
app/test/meson.build | 1 +
app/test/packet_burst_generator.c | 34 +-
app/test/packet_burst_generator.h | 4 +-
app/test/test_pmd_null.c | 947 ++++++++++++++++++++++++++++++
drivers/net/null/rte_eth_null.c | 156 ++---
5 files changed, 1050 insertions(+), 92 deletions(-)
create mode 100644 app/test/test_pmd_null.c
--
2.51.0
