picnoir
/
Systemd
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Merge pull request #17087 from yuwata/man-initial-congestion-window 

man: update InitialCongestionWindow= and InitialAdvertisedReceiveWindow=
This commit is contained in:
Lennart Poettering 2020-09-30 10:55:18 +02:00 committed by GitHub
parent b3ffa2b5f3 3cb7af5baa
commit 24d86fdb2f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 14 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
man/systemd.network.xml
View File

@ -1389,21 +1389,22 @@ IPv6Token=prefixstable:2002:da8:1::</programlisting></para>
<varlistentry>
<term><varname>InitialCongestionWindow=</varname></term>
<listitem>
<para>The TCP initial congestion window is used during the start of a TCP connection. During the start of a TCP
session, when a client requests a resource, the server's initial congestion window determines how many data bytes
will be sent during the initial burst of data. Takes a size in bytes between 1 and 4294967295 (2^32 - 1). The usual
suffixes K, M, G are supported and are understood to the base of 1024. When unset, the kernel's default will be used.
</para>
<para>The TCP initial congestion window is used during the start of a TCP connection.
During the start of a TCP session, when a client requests a resource, the server's initial
congestion window determines how many packets will be sent during the initial burst of data
without waiting for acknowledgement. Takes a number between 1 and 1023. Note that 100 is
considered an extremely large value for this option. When unset, the kernel's default
(typically 10) will be used.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>InitialAdvertisedReceiveWindow=</varname></term>
<listitem>
<para>The TCP initial advertised receive window is the amount of receive data (in bytes) that can initially be buffered at one time
on a connection. The sending host can send only that amount of data before waiting for an acknowledgment and window update
from the receiving host. Takes a size in bytes between 1 and 4294967295 (2^32 - 1). The usual suffixes K, M, G are supported
and are understood to the base of 1024. When unset, the kernel's default will be used.
</para>
<para>The TCP initial advertised receive window is the amount of receive data (in bytes)
that can initially be buffered at one time on a connection. The sending host can send only
that amount of data before waiting for an acknowledgment and window update from the
receiving host. Takes a number between 1 and 1023. Note that 100 is considered an extremely
large value for this option. When unset, the kernel's default will be used.</para>
</listitem>
</varlistentry>
<varlistentry>

6
src/network/networkd-route.c
View File

@ -1465,7 +1465,7 @@ int config_parse_tcp_window(
_cleanup_(route_free_or_set_invalidp) Route *n = NULL;
Network *network = userdata;
uint64_t k;
uint32_t k;
int r;
assert(filename);
@ -1483,13 +1483,13 @@ int config_parse_tcp_window(
return 0;
}
r = parse_size(rvalue, 1024, &k);
r = safe_atou32(rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Could not parse TCP %s \"%s\", ignoring assignment: %m", lvalue, rvalue);
return 0;
}
if (k > UINT32_MAX) {
if (k >= 1024) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Specified TCP %s \"%s\" is too large, ignoring assignment: %m", lvalue, rvalue);
return 0;