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 (UINT32_MAX instead of cast).
2) Extends the packet burst generator to support larger packets
by changing type from uint8_t to uint16_t, enabling better
testing of drivers with various packet sizes.
3) 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, and multi-threaded TX.
4) Adds validation that the mbuf pool passed to rx_queue_setup
has sufficient data room for the configured packet size.
This prevents generating invalid mbufs in copy mode.
5) Adds validation that the packet size devarg doesn't exceed
UINT16_MAX, which is the maximum size for a single mbuf
data segment.
Patches 4 and 5 are marked for stable backport as they fix
potential issues where invalid mbufs could be generated.
v8:
- Rebased to latest main
- Minor revision to avoid changes in later fixes
v7:
- Added release notes to patch 1
- Simplified test code by using single-line comments and struct
initializers instead of explicit zeroing
- Added two new bug fix patches (patches 4 and 5) that validate
packet size against mbuf data room constraints
Stephen Hemminger (5):
net/null: cleanup info response
test: generate larger packet bursts
test: add a test for null PMD
net/null: add check for pool vs packet size
net/null: check packet size argument
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 | 916 +++++++++++++++++++++++++
doc/guides/rel_notes/release_26_03.rst | 10 +
drivers/net/null/rte_eth_null.c | 21 +++---
6 files changed, 959 insertions(+), 27 deletions(-)
create mode 100644 app/test/test_pmd_null.c
Stephen Hemminger (5):
net/null: cleanup info response
test: generate larger packet bursts
test: add a test for null PMD
net/null: add check for pool vs packet size
net/null: check packet size argument
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 | 936 ++++++++++++++++++++++++++++++
drivers/net/null/rte_eth_null.c | 20 +-
5 files changed, 970 insertions(+), 25 deletions(-)
create mode 100644 app/test/test_pmd_null.c
--
2.51.0
