SNDCP: add RFC1144 header compression functionality
- Add module to handle compression entities
- Add module to control header compression
- Introduce VTY commands for heade compression configuration
- Add changes in sndcp and llc to integrate header compression
Change-Id: Ia00260dc09978844c2865957b4d43000b78b5e43
diff --git a/openbsc/src/gprs/sgsn_vty.c b/openbsc/src/gprs/sgsn_vty.c
index e6dc68d..0eea350 100644
--- a/openbsc/src/gprs/sgsn_vty.c
+++ b/openbsc/src/gprs/sgsn_vty.c
@@ -269,6 +269,14 @@
vty_out(vty, " timer t3395 %d%s", g_cfg->timers.T3395, VTY_NEWLINE);
vty_out(vty, " timer t3397 %d%s", g_cfg->timers.T3397, VTY_NEWLINE);
+ if (g_cfg->pcomp_rfc1144.active) {
+ vty_out(vty, " compression rfc1144 active slots %d%s",
+ g_cfg->pcomp_rfc1144.s01 + 1, VTY_NEWLINE);
+ } else if (g_cfg->pcomp_rfc1144.passive) {
+ vty_out(vty, " compression rfc1144 passive%s", VTY_NEWLINE);
+ } else
+ vty_out(vty, " no compression rfc1144%s", VTY_NEWLINE);
+
return CMD_SUCCESS;
}
@@ -1074,6 +1082,41 @@
return CMD_SUCCESS;
}
+#define COMPRESSION_STR "Configure compression\n"
+DEFUN(cfg_no_comp_rfc1144, cfg_no_comp_rfc1144_cmd,
+ "no compression rfc1144",
+ NO_STR COMPRESSION_STR "disable rfc1144 TCP/IP header compression\n")
+{
+ g_cfg->pcomp_rfc1144.active = 0;
+ g_cfg->pcomp_rfc1144.passive = 0;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_comp_rfc1144, cfg_comp_rfc1144_cmd,
+ "compression rfc1144 active slots <1-256>",
+ COMPRESSION_STR
+ "RFC1144 Header compresion scheme\n"
+ "Compression is actively proposed\n"
+ "Number of compression state slots\n"
+ "Number of compression state slots\n")
+{
+ g_cfg->pcomp_rfc1144.active = 1;
+ g_cfg->pcomp_rfc1144.passive = 1;
+ g_cfg->pcomp_rfc1144.s01 = atoi(argv[0]) - 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_comp_rfc1144p, cfg_comp_rfc1144p_cmd,
+ "compression rfc1144 passive",
+ COMPRESSION_STR
+ "RFC1144 Header compresion scheme\n"
+ "Compression is available on request\n")
+{
+ g_cfg->pcomp_rfc1144.active = 0;
+ g_cfg->pcomp_rfc1144.passive = 1;
+ return CMD_SUCCESS;
+}
+
int sgsn_vty_init(void)
{
install_element_ve(&show_sgsn_cmd);
@@ -1128,6 +1171,10 @@
install_element(SGSN_NODE, &cfg_sgsn_T3395_cmd);
install_element(SGSN_NODE, &cfg_sgsn_T3397_cmd);
+ install_element(SGSN_NODE, &cfg_no_comp_rfc1144_cmd);
+ install_element(SGSN_NODE, &cfg_comp_rfc1144_cmd);
+ install_element(SGSN_NODE, &cfg_comp_rfc1144p_cmd);
+
return 0;
}