This series makes several improvements to the null PMD driver and adds comprehensive unit tests.
Changes in 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 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. 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 -- 2.51.0 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 | 938 +++++++++++++++++++++++++ doc/guides/rel_notes/release_26_03.rst | 8 + drivers/net/null/rte_eth_null.c | 21 +- 6 files changed, 980 insertions(+), 26 deletions(-) create mode 100644 app/test/test_pmd_null.c -- 2.51.0
