diff options
Diffstat (limited to 'Documentation/networking/ip-sysctl.txt')
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 3e0c017e78772..90ed78110fd49 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -102,9 +102,15 @@ inet_peer_gc_maxtime - INTEGER TCP variables: tcp_abc - INTEGER - Controls Appropriate Byte Count defined in RFC3465. If set to - 0 then does congestion avoid once per ack. 1 is conservative - value, and 2 is more agressive. + Controls Appropriate Byte Count (ABC) defined in RFC3465. + ABC is a way of increasing congestion window (cwnd) more slowly + in response to partial acknowledgments. + Possible values are: + 0 increase cwnd once per acknowledgment (no ABC) + 1 increase cwnd once per acknowledgment of full sized segment + 2 allow increase cwnd by two if acknowledgment is + of two segments to compensate for delayed acknowledgments. + Default: 0 (off) tcp_syn_retries - INTEGER Number of times initial SYNs for an active TCP connection attempt |