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authorJacob Erlbeck <jerlbeck@sysmocom.de>2015-02-03 13:47:53 +0100
committerHolger Hans Peter Freyther <holger@moiji-mobile.com>2015-02-06 09:56:17 +0100
commitcb1db8b6d5277a52ed553925d301bfdc514bb77c (patch)
tree62515e3ce5b4c0d1d13bcc02c787e1957e64e222 /openbsc/src/gprs/sgsn_vty.c
parent0e8add601da35188eb155c8c279a9bdcaf4ba41b (diff)
sgsn: Add functions to handle APN contexts
This commit adds the exported functions apn_ctx_find_alloc, apn_ctx_free, apn_ctx_by_name, and apn_ctx_match to manage and retrieve APN to GGSN mappings. The following VTY commands are added to 'config-sgsn': - apn APN ggsn <0-255> - apn APN imsi-prefix PREFIX ggsn <0-255> which maps an APN gateway string to an SGSN id. The SGSN must be configured in advance. When matching an APN string, entries with a leading '*' are used for suffix matching, otherwise an exact match is done. When a prefix is given, it is matched against the IMSI. If several entries match, a longer matching IMSI prefix has precedence. If there are several matching entries with the same PREFIX, the entry with longest matching APN is returned. Ticket: OW#1334 Sponsored-by: On-Waves ehf
Diffstat (limited to 'openbsc/src/gprs/sgsn_vty.c')
-rw-r--r--openbsc/src/gprs/sgsn_vty.c64
1 files changed, 60 insertions, 4 deletions
diff --git a/openbsc/src/gprs/sgsn_vty.c b/openbsc/src/gprs/sgsn_vty.c
index 81b9d7f67..d85ea0192 100644
--- a/openbsc/src/gprs/sgsn_vty.c
+++ b/openbsc/src/gprs/sgsn_vty.c
@@ -126,6 +126,7 @@ static int config_write_sgsn(struct vty *vty)
{
struct sgsn_ggsn_ctx *gctx;
struct imsi_acl_entry *acl;
+ struct apn_ctx *actx;
vty_out(vty, "sgsn%s", VTY_NEWLINE);
@@ -151,6 +152,18 @@ static int config_write_sgsn(struct vty *vty)
llist_for_each_entry(acl, &g_cfg->imsi_acl, list)
vty_out(vty, " imsi-acl add %s%s", acl->imsi, VTY_NEWLINE);
+ if (llist_empty(&sgsn_apn_ctxts))
+ vty_out(vty, " ! apn * ggsn 0%s", VTY_NEWLINE);
+ llist_for_each_entry(actx, &sgsn_apn_ctxts, list) {
+ if (strlen(actx->imsi_prefix) > 0)
+ vty_out(vty, " apn %s imsi-prefix %s ggsn %d%s",
+ actx->name, actx->imsi_prefix, actx->ggsn->id,
+ VTY_NEWLINE);
+ else
+ vty_out(vty, " apn %s ggsn %d%s", actx->name,
+ actx->ggsn->id, VTY_NEWLINE);
+ }
+
return CMD_SUCCESS;
}
@@ -216,14 +229,55 @@ DEFUN(cfg_ggsn_gtp_version, cfg_ggsn_gtp_version_cmd,
return CMD_SUCCESS;
}
-#if 0
+#define APN_STR "Configure the information per APN\n"
+#define APN_GW_STR "The APN gateway name optionally prefixed by '*' (wildcard)\n"
+
+static int add_apn_ggsn_mapping(struct vty *vty, const char *apn_str,
+ const char *imsi_prefix, int ggsn_id)
+{
+ struct apn_ctx *actx;
+ struct sgsn_ggsn_ctx *ggsn;
+
+ ggsn = sgsn_ggsn_ctx_by_id(ggsn_id);
+ if (ggsn == NULL) {
+ vty_out(vty, "%% a GGSN with id %d has not been defined%s",
+ ggsn_id, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ actx = sgsn_apn_ctx_find_alloc(apn_str, imsi_prefix);
+ if (!actx) {
+ vty_out(vty, "%% unable to create APN context for %s/%s%s",
+ apn_str, imsi_prefix, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ actx->ggsn = ggsn;
+
+ return CMD_SUCCESS;
+}
+
DEFUN(cfg_apn_ggsn, cfg_apn_ggsn_cmd,
"apn APNAME ggsn <0-255>",
- "")
+ APN_STR APN_GW_STR
+ "Select the GGSN to use when the APN gateway prefix matches\n"
+ "The GGSN id")
{
- struct apn_ctx **
+
+ return add_apn_ggsn_mapping(vty, argv[0], "", atoi(argv[1]));
+}
+
+DEFUN(cfg_apn_imsi_ggsn, cfg_apn_imsi_ggsn_cmd,
+ "apn APNAME imsi-prefix IMSIPRE ggsn <0-255>",
+ APN_STR APN_GW_STR
+ "Restrict rule to a certain IMSI prefix\n"
+ "An IMSI prefix\n"
+ "Select the GGSN to use when APN gateway and IMSI prefix match\n"
+ "The GGSN id")
+{
+
+ return add_apn_ggsn_mapping(vty, argv[0], argv[1], atoi(argv[2]));
}
-#endif
const struct value_string gprs_mm_st_strs[] = {
{ GMM_DEREGISTERED, "DEREGISTERED" },
@@ -757,6 +811,8 @@ int sgsn_vty_init(void)
install_element(SGSN_NODE, &cfg_auth_policy_cmd);
install_element(SGSN_NODE, &cfg_gsup_remote_ip_cmd);
install_element(SGSN_NODE, &cfg_gsup_remote_port_cmd);
+ install_element(SGSN_NODE, &cfg_apn_ggsn_cmd);
+ install_element(SGSN_NODE, &cfg_apn_imsi_ggsn_cmd);
return 0;
}