Hi Dragos,
On 03/14/2016 10:50 AM, Dragos Tatulea wrote:
For now the driver works only with bridged mode for 2G/3G.
Once it activates the context it reads the ip, netmask,
gw, dns and sets them in the context settings.
---
Makefile.am | 7 +
drivers/ubloxmodem/gprs-context.c | 415 ++++++++++++++++++++++++++++++++++++++
drivers/ubloxmodem/ubloxmodem.c | 49 +++++
drivers/ubloxmodem/ubloxmodem.h | 25 +++
4 files changed, 496 insertions(+)
create mode 100644 drivers/ubloxmodem/gprs-context.c
create mode 100644 drivers/ubloxmodem/ubloxmodem.c
create mode 100644 drivers/ubloxmodem/ubloxmodem.h
diff --git a/Makefile.am b/Makefile.am
index cde998d..7652cfe 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -374,6 +374,13 @@ builtin_sources += drivers/atmodem/atutil.h \
drivers/speedupmodem/speedupmodem.c \
drivers/speedupmodem/ussd.c
+builtin_modules += ubloxmodem
+builtin_sources += drivers/atmodem/atutil.h \
+ drivers/ubloxmodem/ubloxmodem.h \
+ drivers/ubloxmodem/ubloxmodem.c \
+ drivers/ubloxmodem/gprs-context.c
+
+
if PHONESIM
builtin_modules += phonesim
builtin_sources += plugins/phonesim.c
diff --git a/drivers/ubloxmodem/gprs-context.c b/drivers/ubloxmodem/gprs-context.c
new file mode 100644
index 0000000..4b8fb6c
--- /dev/null
+++ b/drivers/ubloxmodem/gprs-context.c
@@ -0,0 +1,415 @@
+/*
+ *
+ * oFono - Open Source Telephony
+ *
+ * Copyright (C) 2016 EndoCode AG. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <errno.h>
+
+#include <glib.h>
+
+#include <ofono/log.h>
+#include <ofono/modem.h>
+#include <ofono/gprs-context.h>
+
+#include "gatchat.h"
+#include "gatresult.h"
+
+#include "ubloxmodem.h"
+
+static const char *none_prefix[] = { NULL };
+static const char *cgcontrdp_prefix[] = { "+CGCONTRDP:", NULL };
+
+struct gprs_context_data {
+ GAtChat *chat;
+ unsigned int active_context;
+ char apn[OFONO_GPRS_MAX_APN_LENGTH + 1];
+ ofono_gprs_context_cb_t cb;
+ void *cb_data;
+};
+
+#define UBLOX_MAX_DEF_CONTEXT 8
What does this do? Doesn't seem to be used in this file.
+
+/*
+ * CGCONTRDP returns addr + netmask in the same string in the form
+ * of "a.b.c.d.m.m.m.m" for IPv4. IPv6 is not supported so we ignore it.
+ */
+static int read_addrnetmask(struct ofono_gprs_context *gc,
+ const char *addrnetmask)
Since this function sets both parameters, how about:
set_address_and_netmask()
+{
+ char *dup = strdup(addrnetmask);
+ char *s = dup;
+
+ const char *addr = s;
+ const char *netmask = NULL;
+
+ int ret = -EINVAL;
+ int i;
+
+ /* Count 7 dots for ipv4, less or more means error. */
+ for (i = 0; i < 8; i++, s++) {
+ s = strchr(s, '.');
+ if (!s)
+ break;
+
+ if (i == 3) {
+ /* set netmask ptr and break the string */
+ netmask = s+1;
+ s[0] = 0;
+ }
+ }
+
+ if (i == 7) {
+ ofono_gprs_context_set_ipv4_address(gc, addr, 1);
+ ofono_gprs_context_set_ipv4_netmask(gc, netmask);
+
+ ret = 0;
+ }
+
+ free(dup);
+
+ return ret;
+}
+
+static void callback_with_error(struct gprs_context_data *gcd, GAtResult *res)
Please inline this function to be more consistent with the rest of the
codebase.
+{
+ struct ofono_error error;
+
+ decode_at_error(&error, g_at_result_final_response(res));
+ gcd->cb(&error, gcd->cb_data);
+}
+
+
1 empty line is enough. We don't use more than 1 empty line in a row.
Yes, we're that pedantic :)
+static void set_gprs_context_interface(struct ofono_gprs_context
*gc)
+{
+ struct ofono_modem *modem;
+ const char *interface;
+
+ /* read interface name read at detection time */
+ modem = ofono_gprs_context_get_modem(gc);
+ interface = ofono_modem_get_string(modem, "NetworkInterface");
+ ofono_gprs_context_set_interface(gc, interface);
+}
+
+static void cgcontrdp_bridge_cb(gboolean ok, GAtResult *result,
+ gpointer user_data)
+{
+ struct ofono_gprs_context *gc = user_data;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ GAtResultIter iter;
+ int cid = -1;
+
+ const char *laddrnetmask = NULL;
+ const char *gw = NULL;
+ const char *dns[2+1] = { NULL, NULL, NULL };
Do dns[3] here.
+
+ DBG("ok %d", ok);
+
+ if (!ok) {
+ callback_with_error(gcd, result);
as mentioned above, lets inline the contents of callback_with_error here:
e.g.
decode_at_error(...);
cb(...)
+
+ return;
+ }
+
+ g_at_result_iter_init(&iter, result);
+
+ while (g_at_result_iter_next(&iter, "+CGCONTRDP:")) {
+ /* tmp vals for ignored fields */
+ int bearer_id;
+ const char *apn;
+
+ if (!g_at_result_iter_next_number(&iter, &cid))
+ break;
+
+ if (!g_at_result_iter_next_number(&iter, &bearer_id))
+ break;
+
+ if (!g_at_result_iter_next_string(&iter, &apn))
+ break;
+
+ if (!g_at_result_iter_next_string(&iter, &laddrnetmask))
+ break;
+
+ if (!g_at_result_iter_next_string(&iter, &gw))
+ break;
+
+ if (!g_at_result_iter_next_string(&iter, &dns[0]))
+ break;
+
+ if (!g_at_result_iter_next_string(&iter, &dns[1]))
+ break;
+ }
+
+ set_gprs_context_interface(gc);
+
+ if (!laddrnetmask || read_addrnetmask(gc, laddrnetmask) < 0) {
+ CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
+ return;
+ }
+
+ if (gw)
+ ofono_gprs_context_set_ipv4_gateway(gc, gw);
+
+ if (dns[0])
+ ofono_gprs_context_set_ipv4_dns_servers(gc, dns);
+
+ CALLBACK_WITH_SUCCESS(gcd->cb, gcd->cb_data);
+}
+
+static int ublox_read_ip_config_bridge(struct ofono_gprs_context *gc)
+{
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ char buf[64];
+
+ /* read ip configuration info */
+ snprintf(buf, sizeof(buf), "AT+CGCONTRDP=%u", gcd->active_context);
+ return g_at_chat_send(gcd->chat, buf, cgcontrdp_prefix,
+ cgcontrdp_bridge_cb, gc, NULL);
+
+}
+
+static void ublox_post_activation(struct ofono_gprs_context *gc)
+{
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+
+ if (ublox_read_ip_config_bridge(gc) < 0)
+ CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
Since this is a two line function, it would be easier to read the code
if it is moved into cgact_enable_cb
In fact, just sending CGCONTRDP inside cgact_enable_cb would be the
simplest.
+}
+
+static void cgact_enable_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+ struct ofono_gprs_context *gc = user_data;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+
+ DBG("ok %d", ok);
+ if (!ok) {
+ gcd->active_context = 0;
+ callback_with_error(gcd, result);
+
+ return;
+ }
+
+ ublox_post_activation(gc);
+}
+
+static void cgdcont_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+ struct ofono_gprs_context *gc = user_data;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ char buf[64];
+
+ DBG("ok %d", ok);
+
+ if (!ok) {
+ gcd->active_context = 0;
+ callback_with_error(gcd, result);
+
+ return;
+ }
+
+ snprintf(buf, sizeof(buf), "AT+CGACT=1,%u", gcd->active_context);
+ if (g_at_chat_send(gcd->chat, buf, none_prefix,
+ cgact_enable_cb, gc, NULL))
+ return;
+
+ CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
+}
+
+static void ublox_activate_ctx(struct ofono_gprs_context *gc)
Lets name this ublox_send_cgdcont, so it is clear what this helper
function actually does
+{
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ char buf[OFONO_GPRS_MAX_APN_LENGTH + 128];
+ int len;
+
+ len = snprintf(buf, sizeof(buf), "AT+CGDCONT=%u,\"IP\"",
+ gcd->active_context);
+
+ if (gcd->apn)
+ snprintf(buf + len, sizeof(buf) - len - 3, ",\"%s\"",
+ gcd->apn);
+
+ if (g_at_chat_send(gcd->chat, buf, none_prefix,
+ cgdcont_cb, gc, NULL) > 0)
+ return;
+
+ CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
+}
+
+#define UBLOX_MAX_USER_LEN 50
+#define UBLOX_MAX_PASS_LEN 50
+
Why is this defined here? Does it belong in a later patch?
+static void ublox_gprs_activate_primary(struct ofono_gprs_context
*gc,
+ const struct ofono_gprs_primary_context *ctx,
+ ofono_gprs_context_cb_t cb, void *data)
+{
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+
+ /* IPv6 support not implemented */
+ if (ctx->proto != OFONO_GPRS_PROTO_IP) {
+ CALLBACK_WITH_FAILURE(cb, data);
+ return;
+ }
+
+ DBG("cid %u", ctx->cid);
+
+ gcd->active_context = ctx->cid;
+ if (!gcd->active_context) {
+ ofono_error("can't activate more contexts");
+ CALLBACK_WITH_FAILURE(cb, data);
+ return;
+ }
+
+ gcd->cb = cb;
+ gcd->cb_data = data;
+ memcpy(gcd->apn, ctx->apn, sizeof(ctx->apn));
Why do we memcpy the APN into this structure? If you don't want to make
this function too long, then just pass the apn as a parameter to
ublox_activate_ctx.
+
+ ublox_activate_ctx(gc);
+}
+
+static void cgact_disable_cb(gboolean ok, GAtResult *result, gpointer user_data)
+{
+ struct ofono_gprs_context *gc = user_data;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+
+ DBG("ok %d", ok);
Empty line here after DBG, see item M1 in doc/coding-style.txt
+ if (!ok) {
+ CALLBACK_WITH_FAILURE(gcd->cb, gcd->cb_data);
+ return;
+ }
+
+ gcd->active_context = 0;
+
+ CALLBACK_WITH_SUCCESS(gcd->cb, gcd->cb_data);
+}
+
+static void ublox_gprs_deactivate_primary(struct ofono_gprs_context *gc,
+ unsigned int cid,
+ ofono_gprs_context_cb_t cb, void *data)
+{
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ char buf[64];
+
+ DBG("cid %u", cid);
+
+ gcd->cb = cb;
+ gcd->cb_data = data;
+
+ snprintf(buf, sizeof(buf), "AT+CGACT=0,%u", gcd->active_context);
+ g_at_chat_send(gcd->chat, buf, none_prefix,
+ cgact_disable_cb, gc, NULL);
+}
+
+static void cgev_notify(GAtResult *result, gpointer user_data)
+{
+ struct ofono_gprs_context *gc = user_data;
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+ GAtResultIter iter;
+ const char *event;
+ gint cid;
+
+ g_at_result_iter_init(&iter, result);
+
+ if (!g_at_result_iter_next(&iter, "+CGEV:"))
+ return;
+
+ if (!g_at_result_iter_next_unquoted_string(&iter, &event))
+ return;
+
+ if (g_str_has_prefix(event, "NW PDN DEACT")) {
+ if (!g_at_result_iter_skip_next(&iter))
+ return;
+ } else if (g_str_has_prefix(event, "NW DEACT") == FALSE)
+ return;
+
+ if (!g_at_result_iter_skip_next(&iter))
+ return;
+
+ if (!g_at_result_iter_next_number(&iter, &cid))
+ return;
+
+ DBG("cid %d", cid);
+
+ if ((unsigned int) cid != gcd->active_context)
+ return;
+
+ ofono_gprs_context_deactivated(gc, gcd->active_context);
+ gcd->active_context = 0;
+}
+
+
+static int ublox_gprs_context_probe(struct ofono_gprs_context *gc,
+ unsigned int vendor, void *data)
+{
+ GAtChat *chat = data;
+ struct gprs_context_data *gcd;
+
+ DBG("");
+
+ gcd = g_try_new0(struct gprs_context_data, 1);
+ if (gcd == NULL)
+ return -ENOMEM;
+
+ gcd->chat = g_at_chat_clone(chat);
+
+ ofono_gprs_context_set_data(gc, gcd);
+
+ g_at_chat_register(chat, "+CGEV:", cgev_notify, FALSE, gc, NULL);
+
+ return 0;
+}
+
+static void ublox_gprs_context_remove(struct ofono_gprs_context *gc)
+{
+ struct gprs_context_data *gcd = ofono_gprs_context_get_data(gc);
+
+ DBG("");
+
+ ofono_gprs_context_set_data(gc, NULL);
+
+ g_at_chat_unref(gcd->chat);
+
+ memset(gcd, 0, sizeof(*gcd));
+}
+
+static struct ofono_gprs_context_driver driver = {
+ .name = "ubloxmodem",
+ .probe = ublox_gprs_context_probe,
+ .remove = ublox_gprs_context_remove,
+ .activate_primary = ublox_gprs_activate_primary,
+ .deactivate_primary = ublox_gprs_deactivate_primary,
+};
+
+
+void ublox_gprs_context_init(void)
+{
+ ofono_gprs_context_driver_register(&driver);
+}
+
+void ublox_gprs_context_exit(void)
+{
+ ofono_gprs_context_driver_unregister(&driver);
+}
<snip>
Looks great. Lets fix these minor nitpicks and I'll apply it.
Regards,
-Denis