qcdm: add IPv6 nvram setting

Some Qualcomm firmwares disable IPv6 unless this flag is set in nvram, at
least for the LTE default bearer. The firmware will happily let you
configure the IPV6 and IPV4V6 PDP types, also including the default
profile, but any attempt to connect will fail.

Signed-off-by: Bjørn Mork <bjorn@mork.no>

1 files changed, 88 insertions, 0 deletions

diff --git a/libqcdm/src/commands.c b/libqcdm/src/commands.c
index 541cad76..ff7d2328 100644
--- a/libqcdm/src/commands.c
+++ b/libqcdm/src/commands.c
@@ -1087,6 +1087,94 @@ qcdm_cmd_nv_set_hybrid_pref_result (const char *buf, size_t len, int *out_error)
 
 /**********************************************************************/
 
+size_t
+qcdm_cmd_nv_get_ipv6_enabled_new (char *buf, size_t len)
+{
+    char cmdbuf[sizeof (DMCmdNVReadWrite) + 2];
+    DMCmdNVReadWrite *cmd = (DMCmdNVReadWrite *) &cmdbuf[0];
+
+    qcdm_return_val_if_fail (buf != NULL, 0);
+    qcdm_return_val_if_fail (len >= sizeof (*cmd) + DIAG_TRAILER_LEN, 0);
+
+    memset (cmd, 0, sizeof (*cmd));
+    cmd->code = DIAG_CMD_NV_READ;
+    cmd->nv_item = htole16 (DIAG_NV_IPV6_ENABLED);
+
+    return dm_encapsulate_buffer (cmdbuf, sizeof (*cmd), sizeof (cmdbuf), buf, len);
+}
+
+QcdmResult *
+qcdm_cmd_nv_get_ipv6_enabled_result (const char *buf, size_t len, int *out_error)
+{
+    QcdmResult *result = NULL;
+    DMCmdNVReadWrite *rsp = (DMCmdNVReadWrite *) buf;
+    DMNVItemIPv6Enabled *ipv6;
+
+    qcdm_return_val_if_fail (buf != NULL, NULL);
+
+    if (!check_command (buf, len, DIAG_CMD_NV_READ, sizeof (DMCmdNVReadWrite), out_error))
+        return NULL;
+
+    if (!check_nv_cmd (rsp, DIAG_NV_IPV6_ENABLED, out_error))
+        return NULL;
+
+    ipv6 = (DMNVItemIPv6Enabled *) &rsp->data[0];
+
+    if (ipv6->enabled > 1)
+        qcdm_warn (0, "Unknown ipv6 preference 0x%X", ipv6->enabled);
+
+    result = qcdm_result_new ();
+    qcdm_result_add_u8 (result, QCDM_CMD_NV_GET_IPV6_ENABLED_ITEM_ENABLED, ipv6->enabled);
+
+    return result;
+}
+
+size_t
+qcdm_cmd_nv_set_ipv6_enabled_new (char *buf,
+                                 size_t len,
+                                 u_int8_t enabled)
+{
+    char cmdbuf[sizeof (DMCmdNVReadWrite) + 2];
+    DMCmdNVReadWrite *cmd = (DMCmdNVReadWrite *) &cmdbuf[0];
+    DMNVItemIPv6Enabled *req;
+
+    qcdm_return_val_if_fail (buf != NULL, 0);
+    qcdm_return_val_if_fail (len >= sizeof (*cmd) + DIAG_TRAILER_LEN, 0);
+
+    if (enabled > QCDM_CMD_NV_IPV6_ENABLED_ON) {
+        qcdm_err (0, "Invalid ipv6 preference %d", enabled);
+        return 0;
+    }
+
+    memset (cmd, 0, sizeof (*cmd));
+    cmd->code = DIAG_CMD_NV_WRITE;
+    cmd->nv_item = htole16 (DIAG_NV_IPV6_ENABLED);
+
+    req = (DMNVItemIPv6Enabled *) &cmd->data[0];
+    if (enabled == QCDM_CMD_NV_IPV6_ENABLED_OFF)
+        req->enabled = DIAG_NV_IPV6_ENABLED_OFF;
+    else if (enabled == QCDM_CMD_NV_IPV6_ENABLED_ON)
+        req->enabled = DIAG_NV_IPV6_ENABLED_ON;
+
+    return dm_encapsulate_buffer (cmdbuf, sizeof (*cmd), sizeof (cmdbuf), buf, len);
+}
+
+QcdmResult *
+qcdm_cmd_nv_set_ipv6_enabled_result (const char *buf, size_t len, int *out_error)
+{
+    qcdm_return_val_if_fail (buf != NULL, NULL);
+
+    if (!check_command (buf, len, DIAG_CMD_NV_WRITE, sizeof (DMCmdNVReadWrite), out_error))
+        return NULL;
+
+    if (!check_nv_cmd ((DMCmdNVReadWrite *) buf, DIAG_NV_IPV6_ENABLED, out_error))
+        return NULL;
+
+    return qcdm_result_new ();
+}
+
+/**********************************************************************/
+
 static qcdmbool
 hdr_rev_pref_validate (u_int8_t dm)
 {