siproxd: add max clients configuration and default

Add a configuration option SIPROXD_MAX_CLIENTS used for compile-time sizing
of the maximum supported proxy clients. Set this to a default value of 32,
which is more suitable for a small network or CPE router and uses much
less memory than the upstream value of 512 (e.g. RSS of 2 MB vs 17 MB).

Drop the following patch in favour of the new config option:

  * 005-reduce-rtpproxy-urlmap-size.patch

Also fix an incorrect configure option, and silence many warnings due to
unused VCS 'ident' variables in the sources.

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>

2 files changed, 29 insertions, 22 deletions

diff --git a/net/siproxd/Makefile b/net/siproxd/Makefile
index 30a4c11..d16c040 100644
--- a/net/siproxd/Makefile
+++ b/net/siproxd/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=siproxd
 PKG_VERSION:=0.8.3
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@SF/siproxd
@@ -19,6 +19,8 @@ PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1
 PKG_BUILD_PARALLEL:=1
 
+PKG_CONFIG_DEPENDS:=CONFIG_SIPROXD_MAX_CLIENTS
+
 PKG_LICENSE:=GPL-2.0+
 PKG_LICENSE_FILES:=COPYING
 
@@ -46,14 +48,37 @@ define Package/siproxd/conffiles
 /etc/config/siproxd
 endef
 
+define Package/siproxd/config
+	config SIPROXD_MAX_CLIENTS
+		int "Max supported clients"
+		default 32
+		depends on PACKAGE_siproxd
+		help
+		  Default 32 is sufficient for home environments. Larger values
+		  consume more memory (e.g. RSS of 17 MB with upstream default 512).
+endef
+
 CONFIGURE_ARGS+= \
 	--with-libosip-prefix="$(STAGING_DIR)/usr" \
-	--disable-ltdl-convenience \
+	--without-included-ltdl \
 	--disable-doc
 
 MAKE_FLAGS+= \
 	SUBDIRS="src scripts contrib"
 
+TARGET_CFLAGS+= \
+	-Wno-unused-const-variable
+
+URLMAP:=$(CONFIG_SIPROXD_MAX_CLIENTS)
+RTPPROXY:=$(shell expr $(URLMAP) \* 2)
+
+define Build/Configure
+	$(call Build/Configure/Default)
+	$(ESED) 's;^(#define[[:space:]]+URLMAP_SIZE).*$$$$;\1 $(URLMAP);' \
+		-e 's;^(#define[[:space:]]+RTPPROXY_SIZE).*$$$$;\1 $(RTPPROXY);' \
+		$(PKG_BUILD_DIR)/src/siproxd.h
+endef
+
 define Package/siproxd/install
 	$(INSTALL_DIR) $(1)/usr/sbin
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/siproxd $(1)/usr/sbin
@@ -72,7 +97,8 @@ define BuildPlugin
 
   define Package/siproxd-mod-$(subst _,-,$(1))/install
 	$(INSTALL_DIR) $$(1)/usr/lib/siproxd
-	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/lib/siproxd/plugin_$(1).so $$(1)/usr/lib/siproxd
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/lib/siproxd/plugin_$(1).so \
+		$$(1)/usr/lib/siproxd
   endef
 
   $$(eval $$(call BuildPackage,siproxd-mod-$(subst _,-,$(1))))
diff --git a/net/siproxd/patches/005-reduce-rtpproxy-urlmap-size.patch b/net/siproxd/patches/005-reduce-rtpproxy-urlmap-size.patch
deleted file mode 100644
index 43587c5..0000000
--- a/net/siproxd/patches/005-reduce-rtpproxy-urlmap-size.patch
+++ /dev/null
@@ -1,19 +0,0 @@
-diff -urN siproxd-0.8.3/src/siproxd.h siproxd-0.8.3-patch/src/siproxd.h
---- siproxd-0.8.3/src/siproxd.h	2019-11-09 09:42:04.000000000 -0800
-+++ siproxd-0.8.3-patch/src/siproxd.h	2020-09-04 20:02:47.961246801 -0700
-@@ -282,13 +282,13 @@
- #define TCP_IDLE_TO	300	/* TCP connection idle timeout in seconds */
- #define TCP_CONNECT_TO	500	/* TCP connect() timeout in msec */
- 
--#define URLMAP_SIZE	512	/* number of URL mapping table entries	*/
-+#define URLMAP_SIZE	128	/* number of URL mapping table entries	*/
- 				/* this limits the number of clients!	*/
- 
- #define SOURCECACHE_SIZE 256	/* number of return addresses		*/
- #define DEJITTERLIMIT	1500000	/* max value for dejitter configuration */
- 
--#define RTPPROXY_SIZE	1024	/* number of rtp proxy entries		*/
-+#define RTPPROXY_SIZE	256	/* number of rtp proxy entries		*/
- 				/* this limits the number of calls!	*/
- 
- #define BUFFER_SIZE	8196	/* input buffer for read from socket	*/