EF_CHALLENGE_ACK_LIMIT

Onload User Guide (UG1586)

Document ID
UG1586
Release Date
2023-07-31
Revision
1.2 English
Name
challenge_ack_limit
Default
INT_MAX
Minimum
0
Maximum
INT_MAX
Scope
per-stack

Limit the number of “challenge ACK packets” sent as part of TCP blind window attack mitigation, RFC 5961; in packets per second. The limitation applies for each Onload stack separately.

The value from /proc/sys/net/ipv4/tcp_challenge_ack_limit is used by default.