Fix BSD CI

[tigercosmos]

Verified in 9225c43

[tigercosmos]

ummm seems there are other errors...

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.44%. Comparing base (06a10a4) to head (9dee239).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1932      +/-   ##
==========================================
- Coverage   83.45%   83.44%   -0.01%     
==========================================
  Files         301      301              
  Lines       54028    54028              
  Branches    11988    11780     -208     
==========================================
- Hits        45087    45086       -1     
+ Misses       7761     7722      -39     
- Partials     1180     1220      +40     

Flag	Coverage Δ
alpine320	75.42% <ø> (-0.01%)	⬇️
fedora42	75.53% <ø> (-0.03%)	⬇️
macos-13	81.65% <ø> (ø)
macos-14	81.65% <ø> (ø)
macos-15	81.65% <ø> (ø)
mingw32	70.31% <ø> (ø)
mingw64	70.31% <ø> (ø)
rhel94	75.26% <ø> (-0.03%)	⬇️
ubuntu2004	59.21% <ø> (-0.02%)	⬇️
ubuntu2004-zstd	59.33% <ø> (+<0.01%)	⬆️
ubuntu2204	75.21% <ø> (-0.02%)	⬇️
ubuntu2204-icpx	60.90% <ø> (ø)
ubuntu2404	75.45% <ø> (-0.01%)	⬇️
ubuntu2404-arm64	75.43% <ø> (-0.02%)	⬇️
unittest	83.44% <ø> (-0.01%)	⬇️
windows-2022	85.48% <ø> (ø)
windows-2025	85.50% <ø> (ø)
winpcap	85.50% <ø> (ø)
xdp	53.01% <ø> (ø)

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[tigercosmos]

A lot of [ERROR: PcapLiveDevice.cpp: sendPacketUnchecked:1087 ] Error sending packet: send: No buffer space available

[tigercosmos]

Open a issue for now: #1933

[seladb]

A lot of [ERROR: PcapLiveDevice.cpp: sendPacketUnchecked:1087 ] Error sending packet: send: No buffer space available

We might be sending packets too fast in this test. Here is what ChatGPT says:

The error "No buffer space available" from pcap_sendpacket on FreeBSD typically indicates that the kernel's transmit buffer (or ring buffer) for the network interface is full and cannot accept more packets.

Common Causes:

Sending Packets Too Fast
If you're sending packets in a tight loop without any pacing or rate limiting, the buffer fills up faster than the NIC (Network Interface Card) can transmit them.

Interface Not in Promiscuous or Up State
If the interface is not properly configured (e.g. down or in an unexpected state), it might cause this kind of error.

Resource Limits (e.g., mbufs)
FreeBSD relies on a pool of memory buffers (mbufs) for networking. If the system runs out of mbufs due to high network usage, you'll get this error.

pcap_sendpacket Queues Too Many Packets
pcap_sendpacket() queues packets for transmission but does not block, so if the driver can't keep up, it returns an error.

Solutions:
✅ 1. Throttle Packet Sending

Add a small delay between packet sends to avoid overwhelming the interface.

usleep(100); // 100 microseconds

✅ 2. Increase mbuf Pool Size

You can increase the number of available mbufs in FreeBSD:

Edit /boot/loader.conf:

kern.ipc.nmbclusters="32768"
kern.ipc.nmbjumbop="2048"

Then reboot the system.

To check current usage:

vmstat -z | grep mbuf