diff options
| -rw-r--r-- | net/dccp/ccids/Kconfig | 13 | ||||
| -rw-r--r-- | net/dccp/ccids/lib/Makefile | 2 | ||||
| -rw-r--r-- | net/dccp/ccids/lib/packet_history.c | 27 | ||||
| -rw-r--r-- | net/dccp/ccids/lib/packet_history.h | 3 | ||||
| -rw-r--r-- | net/dccp/ccids/lib/tfrc.c | 48 | ||||
| -rw-r--r-- | net/dccp/ccids/lib/tfrc.h | 17 |
6 files changed, 75 insertions, 35 deletions
diff --git a/net/dccp/ccids/Kconfig b/net/dccp/ccids/Kconfig index 3d7d867a7c4..12275943eab 100644 --- a/net/dccp/ccids/Kconfig +++ b/net/dccp/ccids/Kconfig @@ -38,6 +38,7 @@ config IP_DCCP_CCID2_DEBUG config IP_DCCP_CCID3 tristate "CCID3 (TCP-Friendly) (EXPERIMENTAL)" def_tristate IP_DCCP + select IP_DCCP_TFRC_LIB ---help--- CCID 3 denotes TCP-Friendly Rate Control (TFRC), an equation-based rate-controlled congestion control mechanism. TFRC is designed to @@ -63,10 +64,6 @@ config IP_DCCP_CCID3 If in doubt, say M. -config IP_DCCP_TFRC_LIB - depends on IP_DCCP_CCID3 - def_tristate IP_DCCP_CCID3 - config IP_DCCP_CCID3_DEBUG bool "CCID3 debugging messages" depends on IP_DCCP_CCID3 @@ -110,5 +107,13 @@ config IP_DCCP_CCID3_RTO is serious network congestion: experimenting with larger values should therefore not be performed on WANs. +config IP_DCCP_TFRC_LIB + tristate + default n + +config IP_DCCP_TFRC_DEBUG + bool + depends on IP_DCCP_TFRC_LIB + default y if IP_DCCP_CCID3_DEBUG endmenu diff --git a/net/dccp/ccids/lib/Makefile b/net/dccp/ccids/lib/Makefile index 5f940a6cbac..68c93e3d89d 100644 --- a/net/dccp/ccids/lib/Makefile +++ b/net/dccp/ccids/lib/Makefile @@ -1,3 +1,3 @@ obj-$(CONFIG_IP_DCCP_TFRC_LIB) += dccp_tfrc_lib.o -dccp_tfrc_lib-y := loss_interval.o packet_history.o tfrc_equation.o +dccp_tfrc_lib-y := tfrc.o tfrc_equation.o packet_history.o loss_interval.o diff --git a/net/dccp/ccids/lib/packet_history.c b/net/dccp/ccids/lib/packet_history.c index 4805de99656..1d4d6ee9be4 100644 --- a/net/dccp/ccids/lib/packet_history.c +++ b/net/dccp/ccids/lib/packet_history.c @@ -35,7 +35,6 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <linux/module.h> #include <linux/string.h> #include "packet_history.h" @@ -277,39 +276,19 @@ void dccp_rx_hist_purge(struct dccp_rx_hist *hist, struct list_head *list) EXPORT_SYMBOL_GPL(dccp_rx_hist_purge); -extern int __init dccp_li_init(void); -extern void dccp_li_exit(void); - -static __init int packet_history_init(void) +__init int packet_history_init(void) { - if (dccp_li_init() != 0) - goto out; - tfrc_tx_hist = kmem_cache_create("tfrc_tx_hist", sizeof(struct tfrc_tx_hist_entry), 0, SLAB_HWCACHE_ALIGN, NULL); - if (tfrc_tx_hist == NULL) - goto out_li_exit; - return 0; -out_li_exit: - dccp_li_exit(); -out: - return -ENOBUFS; + return tfrc_tx_hist == NULL ? -ENOBUFS : 0; } -module_init(packet_history_init); -static __exit void packet_history_exit(void) +void packet_history_exit(void) { if (tfrc_tx_hist != NULL) { kmem_cache_destroy(tfrc_tx_hist); tfrc_tx_hist = NULL; } - dccp_li_exit(); } -module_exit(packet_history_exit); - -MODULE_AUTHOR("Ian McDonald <ian.mcdonald@jandi.co.nz>, " - "Arnaldo Carvalho de Melo <acme@ghostprotocols.net>"); -MODULE_DESCRIPTION("DCCP TFRC library"); -MODULE_LICENSE("GPL"); diff --git a/net/dccp/ccids/lib/packet_history.h b/net/dccp/ccids/lib/packet_history.h index 0670f46dd53..9a2642ed684 100644 --- a/net/dccp/ccids/lib/packet_history.h +++ b/net/dccp/ccids/lib/packet_history.h @@ -39,8 +39,7 @@ #include <linux/ktime.h> #include <linux/list.h> #include <linux/slab.h> - -#include "../../dccp.h" +#include "tfrc.h" /* Number of later packets received before one is considered lost */ #define TFRC_RECV_NUM_LATE_LOSS 3 diff --git a/net/dccp/ccids/lib/tfrc.c b/net/dccp/ccids/lib/tfrc.c new file mode 100644 index 00000000000..3a7a1838a64 --- /dev/null +++ b/net/dccp/ccids/lib/tfrc.c @@ -0,0 +1,48 @@ +/* + * TFRC: main module holding the pieces of the TFRC library together + * + * Copyright (c) 2007 The University of Aberdeen, Scotland, UK + * Copyright (c) 2007 Arnaldo Carvalho de Melo <acme@redhat.com> + */ +#include <linux/module.h> +#include <linux/moduleparam.h> +#include "tfrc.h" + +#ifdef CONFIG_IP_DCCP_TFRC_DEBUG +int tfrc_debug; +module_param(tfrc_debug, bool, 0444); +MODULE_PARM_DESC(tfrc_debug, "Enable debug messages"); +#endif + +extern int dccp_li_init(void); +extern void dccp_li_exit(void); +extern int packet_history_init(void); +extern void packet_history_exit(void); + +static int __init tfrc_module_init(void) +{ + int rc = dccp_li_init(); + + if (rc == 0) { + rc = packet_history_init(); + if (rc != 0) + dccp_li_exit(); + } + + return rc; +} + +static void __exit tfrc_module_exit(void) +{ + packet_history_exit(); + dccp_li_exit(); +} + +module_init(tfrc_module_init); +module_exit(tfrc_module_exit); + +MODULE_AUTHOR("Gerrit Renker <gerrit@erg.abdn.ac.uk>, " + "Ian McDonald <ian.mcdonald@jandi.co.nz>, " + "Arnaldo Carvalho de Melo <acme@redhat.com>"); +MODULE_DESCRIPTION("DCCP TFRC library"); +MODULE_LICENSE("GPL"); diff --git a/net/dccp/ccids/lib/tfrc.h b/net/dccp/ccids/lib/tfrc.h index 5a0ba86df18..ab8848c0f8c 100644 --- a/net/dccp/ccids/lib/tfrc.h +++ b/net/dccp/ccids/lib/tfrc.h @@ -3,10 +3,11 @@ /* * net/dccp/ccids/lib/tfrc.h * - * Copyright (c) 2005 The University of Waikato, Hamilton, New Zealand. - * Copyright (c) 2005 Ian McDonald <ian.mcdonald@jandi.co.nz> - * Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br> - * Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon + * Copyright (c) 2007 The University of Aberdeen, Scotland, UK + * Copyright (c) 2005-6 The University of Waikato, Hamilton, New Zealand. + * Copyright (c) 2005-6 Ian McDonald <ian.mcdonald@jandi.co.nz> + * Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -15,6 +16,14 @@ */ #include <linux/types.h> #include <asm/div64.h> +#include "../../dccp.h" + +#ifdef CONFIG_IP_DCCP_TFRC_DEBUG +extern int tfrc_debug; +#define tfrc_pr_debug(format, a...) DCCP_PR_DEBUG(tfrc_debug, format, ##a) +#else +#define tfrc_pr_debug(format, a...) +#endif /* integer-arithmetic divisions of type (a * 1000000)/b */ static inline u64 scaled_div(u64 a, u32 b) |