[PATCH v25 00/24] net/pcap: bug fixes and new features

[Stephen Hemminger]

This series contains improvements to the PCAP PMD including new
features, bug fixes, code cleanup, and a comprehensive test suite.

New features:
  - Nanosecond precision timestamps (when libpcap supports it)
  - VLAN tag support
  - Link state reporting in interface mode
  - Link status change (LSC) interrupt support in interface mode
  - EOF notification via link status change for rx_pcap mode
  - Advertise RTE_ETH_TX_OFFLOAD_MULTI_SEGS capability
  - Configurable snapshot length via snaplen devarg
  - Rx scatter offload support with mbuf pool validation

Bug fixes:
  - Fix build on Windows from RTE_LOG_LINE changes.
  - Fix multi-segment transmit to dynamically allocate instead of
    silently truncating packets larger than 9K stack buffer
  - Fix Tx burst error handling: distinguish malformed mbufs (counted
    as errors) from pcap_sendpacket backpressure (break and retry)
  - Reject non-Ethernet interfaces to prevent malformed packets
    and kernel warnings on FreeBSD/macOS loopback

Code cleanup:
  - Convert internal flags from int to bool
  - Remove unnecessary casts of void* from rte_zmalloc
  - Replace rte_malloc/rte_memcpy with libc equivalents in osdep code
  - Include headers explicitly rather than relying on indirect includes
  - Reduce scope of file-level variables

Testing:
  - Add comprehensive unit test suite
  - Make test suite packet generator handle larger packets

v25 - fix build on one intermediate step for bisectability

v24 - fix format string warning in test code.

Stephen Hemminger (24):
  maintainers: update for pcap driver
  net/pcap: fix build on Windows
  doc: update features for PCAP PMD
  net/pcap: include used headers
  net/pcap: remove unnecessary casts
  net/pcap: avoid using rte_malloc and rte_memcpy
  net/pcap: advertise Tx multi segment
  net/pcap: replace stack bounce buffer
  net/pcap: fix error accounting and backpressure on transmit
  net/pcap: clean up TX dumper return value and types
  net/pcap: add datapath debug logging
  net/pcap: consolidate boolean flag handling
  net/pcap: support VLAN strip and insert offloads
  net/pcap: add link status for interface mode
  net/pcap: support nanosecond timestamp precision
  net/pcap: reject non-Ethernet interfaces
  net/pcap: reduce scope of file-level variables
  net/pcap: clarify maximum received packet
  eal/windows: add wrapper for access function
  net/pcap: add snapshot length devarg
  net/pcap: add Rx scatter offload
  net/pcap: add link status change support for iface mode
  net/pcap: add EOF notification via link status change
  test: add comprehensive test suite for pcap PMD

 MAINTAINERS                            |    1 +
 app/test/meson.build                   |    2 +
 app/test/test_pmd_pcap.c               | 3452 ++++++++++++++++++++++++
 doc/guides/nics/features/pcap.ini      |    9 +
 doc/guides/nics/pcap.rst               |   47 +
 doc/guides/rel_notes/release_26_07.rst |   12 +
 drivers/net/pcap/pcap_ethdev.c         |  859 ++++--
 drivers/net/pcap/pcap_osdep.h          |   27 +
 drivers/net/pcap/pcap_osdep_freebsd.c  |   43 +-
 drivers/net/pcap/pcap_osdep_linux.c    |   33 +-
 drivers/net/pcap/pcap_osdep_windows.c  |   76 +-
 lib/eal/windows/include/rte_os_shim.h  |    1 +
 lib/eal/windows/include/unistd.h       |    7 +
 13 files changed, 4354 insertions(+), 215 deletions(-)
 create mode 100644 app/test/test_pmd_pcap.c

-- 
2.53.0