On 4/15/2021 11:10 PM, Dmitry Kozlyuk wrote:
Most modern and actively maintained distribution of libpcap for Windows
is Npcap [1]. It currently doesn't provide a pkg-config file [2].
By default it is installed to C:\Program Files\Npcap and can be located
using standard environment variables [3]:
$env:C_INCLUDE_PATH += ";C:\Program Files\Npcap"
$env:LIBRARY_PATH += ";C:\Program Files\Npcap\Lib\x64" # MinGW
$env:LINK += ' /LIBPATH:"C:\Program Files\Npcap\Lib\x64"' # Clang
The following libpcap.pc also works if placed in PKG_CONFIG_PATH:
prefix="C:/Program Files/Npcap"
Name: libpcap
Version: 1.10
Description: Platform-independent network traffic capture library
Cflags: -I${prefix}/Include
Libs: -L${prefix}/Lib/x64 -lwpcap
Example of collecting packets from an interface to a file:
.\build\examples\dpdk-skeleton.exe `
--vdev
"eth_pcap0,iface=\Device\NPF_{DDD48985-A77C-4FC9-AF48-61E547C8797E}" `
--vdev "eth_pcap1,tx_pcap=capture.pcap"
Interface name can be obtained as follows, with Wireshark installed:
& "C:\Program Files\Wireshark\tshark.exe" -D
Implementation in "pcap_osdep_windows.c" does some guesswork to convert
between variants of an interface name. Microsoft experts and interested
users, please take a look and/or give it a try in your environment.
[1]: https://nmap.org/npcap
[2]: https://github.com/nmap/npcap/issues/299
[3]: https://mesonbuild.com/Reference-manual.html#compiler-object
v4:
* Change libpcap discovery to work without dependent patch.
* Fix memory leak in osdep_iface_mac_get (in v3, actually).
* rte_os_internal.h -> rte_os_shim.h in patch 3/3.
Dmitry Kozlyuk (3):
eal/windows: add timespec_get shim for MinGW
net/pcap: move OS-dependent code to separate files
net/pcap: build on Windows
Hi Dmitry,
Since the dependent patches merged, I checked/tested the set and it looks good
to me, pcap patch already has my review tag.
But not able to test the pcap on Windows. Because if Windows & eal part of the
patch, I am delegating it to Thomas in patchwork.
config/meson.build | 5 +-
doc/guides/rel_notes/release_21_05.rst | 4 +
drivers/net/pcap/meson.build | 16 +--
.../pcap/{rte_eth_pcap.c => pcap_ethdev.c} | 109 +++-------------
drivers/net/pcap/pcap_osdep.h | 18 +++
drivers/net/pcap/pcap_osdep_freebsd.c | 59 +++++++++
drivers/net/pcap/pcap_osdep_linux.c | 42 +++++++
drivers/net/pcap/pcap_osdep_windows.c | 118 ++++++++++++++++++
lib/librte_eal/windows/include/rte_os_shim.h | 32 +++++
9 files changed, 304 insertions(+), 99 deletions(-)
rename drivers/net/pcap/{rte_eth_pcap.c => pcap_ethdev.c} (95%)
create mode 100644 drivers/net/pcap/pcap_osdep.h
create mode 100644 drivers/net/pcap/pcap_osdep_freebsd.c
create mode 100644 drivers/net/pcap/pcap_osdep_linux.c
create mode 100644 drivers/net/pcap/pcap_osdep_windows.c
