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| author | Alejandro Colomar <alx@kernel.org> | 2025-11-24 22:05:10 +0100 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2025-11-25 01:10:30 +0100 |
| commit | a94cb57af7a055a3981d7a4aff20f55c3b6b2899 (patch) | |
| tree | d8c85f4fce99f0f4cfebc046908e4596c3dbfd27 | |
| parent | 509bd67d171369f2d3ed9bbaf1b9a0d2969abbed (diff) | |
| download | man-pages-a94cb57af7a055a3981d7a4aff20f55c3b6b2899.tar.gz | |
man/man2const/IP_TOS.2const: Tweak after split
Signed-off-by: Alejandro Colomar <alx@kernel.org>
| -rw-r--r-- | man/man2const/IP_TOS.2const | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/man/man2const/IP_TOS.2const b/man/man2const/IP_TOS.2const index e291feb069..b5def16716 100644 --- a/man/man2const/IP_TOS.2const +++ b/man/man2const/IP_TOS.2const @@ -21,28 +21,33 @@ Standard C library .BI " int\~*" tos ,\~sizeof(int)); .fi .SH DESCRIPTION -.TP -.BR IP_TOS " (since Linux 1.0)" Set or receive the Type-Of-Service (TOS) field that is sent with every IP packet originating from this socket. It is used to prioritize packets on the network. -TOS is a byte. +.P There are some standard TOS flags defined: +.TP .B IPTOS_LOWDELAY to minimize delays for interactive traffic, +.TP .B IPTOS_THROUGHPUT to optimize throughput, +.TP .B IPTOS_RELIABILITY to optimize for reliability, +.TP .B IPTOS_MINCOST should be used for "filler data" where slow transmission doesn't matter. +.P At most one of these TOS values can be specified. Other bits are invalid and shall be cleared. +.P Linux sends .B IPTOS_LOWDELAY datagrams first by default, but the exact behavior depends on the configured queueing discipline. .\" FIXME elaborate on this +.P Some high-priority levels may require superuser privileges (the .B CAP_NET_ADMIN capability). @@ -57,6 +62,8 @@ See .BR setsockopt (2). See .BR ip (7). +.SH HISTORY +Linux 1.0. .SH SEE ALSO .BR IPPROTO_IP (2const), .BR setsockopt (2), |