This series addresses several issues in the pcapng library, improves test coverage, and updates dumpcap error handling.
Patches 1-3 fix string handling in the pcapng administrative APIs. The pcapng format uses 16-bit length fields for option data, but the library did not validate input lengths and used fixed-size stack buffers that could overflow with large strings. Patch 4 optimizes timestamp conversion by replacing per-packet divisions with precomputed reciprocal multiply-shift operations. Patch 5 improves pcapng unit test coverage with varied comment strings, randomized packet sizes, and 32-bit TSC wraparound verification. Patch 6 fixes the test build dependency so the pcapng test is skipped when the null PMD is disabled. Patch 7 improves error reporting in dumpcap for pcapng API failures. v7: - Add meson build fix for disabled null PMD - Add dumpcap error reporting improvements - Update timestamp commit message to describe current implementation Stephen Hemminger (7): pcapng: add length checks to string arguments pcapng: use malloc instead of fixed buffer size pcapng: chain additional mbuf when comment exceeds tailroom pcapng: improve performance of timestamping test/pcapng: add tests for comments test/pcapng: skip test if null driver missing dumpcap: improve pcapng error reporting app/dumpcap/main.c | 36 +++-- app/test/meson.build | 2 +- app/test/test_pcapng.c | 151 ++++++++++++++----- doc/guides/rel_notes/release_26_03.rst | 9 ++ lib/pcapng/rte_pcapng.c | 199 +++++++++++++++++++------ lib/pcapng/rte_pcapng.h | 12 +- 6 files changed, 307 insertions(+), 102 deletions(-) -- 2.51.0
