CONFIG_IP_DCCP_CCID3: CCID-3 (TCP-Friendly)

General informations

The Linux kernel configuration item CONFIG_IP_DCCP_CCID3 has multiple definitions:

CCID-3 (TCP-Friendly) found in net/dccp/ccids/Kconfig

The configuration item CONFIG_IP_DCCP_CCID3:

• prompt: CCID-3 (TCP-Friendly)
• type: bool
• depends on: (none)
• defined in net/dccp/ccids/Kconfig
• found in Linux kernels: 6.9–6.12, 6.13-rc+HEAD
• modules built: dccp_ccid3

Help text

CCID-3 denotes TCP-Friendly Rate Control (TFRC), an equation-based rate-controlled congestion control mechanism. TFRC is designed to be reasonably fair when competing for bandwidth with TCP-like flows, where a flow is "reasonably fair" if its sending rate is generally within a factor of two of the sending rate of a TCP flow under the same conditions. However, TFRC has a much lower variation of throughput over time compared with TCP, which makes CCID-3 more suitable than CCID-2 for applications such streaming media where a relatively smooth sending rate is of importance.

CCID-3 is further described in RFC 4342, https://www.ietf.org/rfc/rfc4342.txt

The TFRC congestion control algorithms were initially described in RFC 5348.

This text was extracted from RFC 4340 (sec. 10.2), https://www.ietf.org/rfc/rfc4340.txt

If in doubt, say N.

found in net/dccp/ccids/Kconfig

The configuration item CONFIG_IP_DCCP_CCID3:

• prompt:
• type: bool
• depends on: ( CONFIG_IP_DCCP = CONFIG_y || CONFIG_IP_DCCP = CONFIG_m )
• defined in net/dccp/ccids/Kconfig
• found in Linux kernels: 2.6.29–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8
• modules built: dccp_ccid3

Help text

CCID-3 denotes TCP-Friendly Rate Control (TFRC), an equation-based rate-controlled congestion control mechanism. TFRC is designed to be reasonably fair when competing for bandwidth with TCP-like flows, where a flow is "reasonably fair" if its sending rate is generally within a factor of two of the sending rate of a TCP flow under the same conditions. However, TFRC has a much lower variation of throughput over time compared with TCP, which makes CCID-3 more suitable than CCID-2 for applications such streaming media where a relatively smooth sending rate is of importance.

CCID-3 is further described in RFC 4342, https://www.ietf.org/rfc/rfc4342.txt

The TFRC congestion control algorithms were initially described in RFC 5348.

This text was extracted from RFC 4340 (sec. 10.2), https://www.ietf.org/rfc/rfc4340.txt

If in doubt, say N.

found in net/dccp/ccids/Kconfig

The configuration item CONFIG_IP_DCCP_CCID3:

• prompt:
• type: tristate
• depends on: (none)
• defined in net/dccp/ccids/Kconfig
• found in Linux kernels: 2.6.17–2.6.28
• modules built: dccp_ccid3

Help text

CCID 3 denotes TCP-Friendly Rate Control (TFRC), an equation-based rate-controlled congestion control mechanism. TFRC is designed to be reasonably fair when competing for bandwidth with TCP-like flows, where a flow is "reasonably fair" if its sending rate is generally within a factor of two of the sending rate of a TCP flow under the same conditions. However, TFRC has a much lower variation of throughput over time compared with TCP, which makes CCID 3 more suitable than CCID 2 for applications such streaming media where a relatively smooth sending rate is of importance.

CCID 3 is further described in RFC 4342, http://www.ietf.org/rfc/rfc4342.txt

The TFRC congestion control algorithms were initially described in RFC 3448.

This text was extracted from RFC 4340 (sec. 10.2), http://www.ietf.org/rfc/rfc4340.txt

To compile this CCID as a module, choose M here: the module will be called dccp_ccid3.

If in doubt, say M.

CCID3 (TFRC) (EXPERIMENTAL) found in net/dccp/ccids/Kconfig

The configuration item CONFIG_IP_DCCP_CCID3:

• prompt: CCID3 (TFRC) (EXPERIMENTAL)
• type: tristate
• depends on: CONFIG_IP_DCCP
• defined in net/dccp/ccids/Kconfig
• found in Linux kernels: 2.6.14–2.6.16
• modules built: dccp_ccid3

Help text

CCID 3 denotes TCP-Friendly Rate Control (TFRC), an equation-based rate-controlled congestion control mechanism. TFRC is designed to be reasonably fair when competing for bandwidth with TCP-like flows, where a flow is "reasonably fair" if its sending rate is generally within a factor of two of the sending rate of a TCP flow under the same conditions. However, TFRC has a much lower variation of throughput over time compared with TCP, which makes CCID 3 more suitable than CCID 2 for applications such streaming media where a relatively smooth sending rate is of importance.

CCID 3 is further described in [CCID 3 PROFILE]. The TFRC congestion control algorithms were initially described in RFC 3448.

This text was extracted from draft-ietf-dccp-spec-11.txt.

If in doubt, say M.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module dccp_ccid3 CONFIG_IP_DCCP_CCID3 : net/dccp/ccids/Kconfig : "" # in 2.6.14–2.6.28

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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