drivers:alt1250: Correspond to shutdown

ALT1250 driver to support shutdown.

drivers/modem/alt1250/altcom_cmd_sock.h

@@ -159,6 +159,14 @@
 
 #define ALTCOM_IPV6_V6ONLY         27 /* Refer to IPV6_V6ONLY on lwIP */
 
+/* Options for level ALTCOM_SHUT
+ * Referenced from sockets.h of lwIP-v2.02
+ */
+
+#define ALTCOM_SHUT_RD             0 /* Refer to SHUT_RD on lwIP */
+#define ALTCOM_SHUT_WR             1 /* Refer to SHUT_WR on lwIP */
+#define ALTCOM_SHUT_RDWR           2 /* Refer to SHUT_RDWR on lwIP */
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/

drivers/modem/alt1250/altcom_hdlr.c

@@ -124,6 +124,7 @@ static compose_inst_t g_composehdlrs[] =
   CTABLE_CONTENT(RECVFROM, altcom_recvfrom),
   CTABLE_CONTENT(SELECT, altcom_select),
   CTABLE_CONTENT(SENDTO, altcom_sendto),
+  CTABLE_CONTENT(SHUTDOWN, altcom_shutdown),
   CTABLE_CONTENT(SOCKET, altcom_socket),
   CTABLE_CONTENT(SETSOCKOPT, altcom_setsockopt),
   CTABLE_CONTENT(SENDATCMD, altcom_sendatcmd),
@@ -199,6 +200,7 @@ static parse_inst_t g_parsehdlrs[] =
   PTABLE_CONTENT(SOCK_RECVFROM, altcom_recvfrom),
   PTABLE_CONTENT(SOCK_SELECT, altcom_select),
   PTABLE_CONTENT(SOCK_SENDTO, altcom_sockcomm),
+  PTABLE_CONTENT(SOCK_SHUTDOWN, altcom_sockcomm),
   PTABLE_CONTENT(SOCK_SOCKET, altcom_sockcomm),
   PTABLE_CONTENT(SOCK_SETSOCKOPT, altcom_sockcomm),
   PTABLE_CONTENT(SEND_ATCMD, altcom_sendatcmd),

drivers/modem/alt1250/altcom_hdlr_socket.c

@@ -1069,6 +1069,37 @@ int32_t altcom_select_pkt_compose(FAR void **arg, size_t arglen,
   return size;
 }
 
+int32_t altcom_shutdown_pkt_compose(FAR void **arg, size_t arglen,
+                                    uint8_t altver, FAR uint8_t *pktbuf,
+                                    const size_t pktsz, FAR uint16_t *altcid)
+{
+  FAR int32_t sockfd = *((FAR int32_t *)arg[0]);
+  FAR int32_t how = *((FAR int32_t *)arg[1]);
+  FAR struct apicmd_shutdown_s *out =
+    (FAR struct apicmd_shutdown_s *)pktbuf;
+
+  switch (how)
+    {
+      case SHUT_RD:
+        how = ALTCOM_SHUT_RD;
+        break;
+      case SHUT_WR:
+        how = ALTCOM_SHUT_WR;
+        break;
+      case SHUT_RDWR:
+        how = ALTCOM_SHUT_RDWR;
+        break;
+      default:
+        return -EINVAL;
+    }
+
+  out->sockfd = htonl(sockfd);
+  out->how = htonl(how);
+  *altcid = APICMDID_SOCK_SHUTDOWN;
+
+  return sizeof(struct apicmd_shutdown_s);
+}
+
 int32_t altcom_sockcomm_pkt_parse(FAR struct alt1250_dev_s *dev,
                                   FAR uint8_t *pktbuf, size_t pktsz,
                                   uint8_t altver, FAR void **arg,

drivers/modem/alt1250/altcom_hdlr_socket.h

@@ -77,6 +77,10 @@ int32_t altcom_setsockopt_pkt_compose(FAR void **arg, size_t arglen,
 int32_t altcom_select_pkt_compose(FAR void **arg, size_t arglen,
                                   uint8_t altver, FAR uint8_t *pktbuf,
                                   const size_t pktsz, FAR uint16_t *altcid);
+int32_t altcom_shutdown_pkt_compose(FAR void **arg, size_t arglen,
+                                    uint8_t altver, FAR uint8_t *pktbuf,
+                                    const size_t pktsz,
+                                    FAR uint16_t *altcid);
 int32_t altcom_sockcomm_pkt_parse(FAR struct alt1250_dev_s *dev,
                                   FAR uint8_t *pktbuf, size_t pktsz,
                                   uint8_t altver, FAR void **arg,