[nrf noup] include: net: add nRF91 extensions

Add some socket options and address family extensions to Zephyr
headers, which will be useful for nRF91.

- AF_LTE family
- AF_LOCAL family
- NPROTO_AT protocol
- NPROTO_PDN protocol, to be used in conjuction with AF_LTE
- NPROTO_DFU protocol to be used in conjuction with AF_LOCAL
- SOCK_MGMT socket type, used in conjunction with AF_LTE
- SO_RCVTIMEO socket option
- SO_BINDTODEVICE socket option
- SOL_PDN and SOL_DFU socket option levels, and associated socket
  option values: SO_PDN_CONTEXT_ID option for PDN sockets,
  SO_PDN_STATE option for PDN sockets to retrieve the state of the PDN
  connection
- SOL_DFU protocol level and socket options. This includes a
  SO_DFU_ERROR socket option for DFU socket can be used when a
  operation on a DFU socket returns -ENOEXEC, indicating that the
  modem has rejected the operation, to retrieve the reason for the
  error.

Signed-off-by: Håkon Alseth <[email protected]>
Signed-off-by: Robert Lubos <[email protected]>
Signed-off-by: Martí Bolívar <[email protected]>
Signed-off-by: Glenn Ruben Bakke <[email protected]>
Signed-off-by: Christopher Métrailler <[email protected]>
Signed-off-by: Emanuele Di Santo <[email protected]>
(cherry picked from commit 4c24a64)

Author: Rallare

include/net/net_ip.h

@@ -45,6 +45,8 @@ extern "C" {
 #define PF_PACKET       3          /**< Packet family.                */
 #define PF_CAN          4          /**< Controller Area Network.      */
 #define PF_NET_MGMT     5          /**< Network management info.      */
+#define PF_LTE          102        /**< Specific to LTE.              */
+#define PF_LOCAL        103        /**< Local to host.                */
 
 /* Address families. */
 #define AF_UNSPEC      PF_UNSPEC   /**< Unspecified address family.   */
@@ -53,6 +55,8 @@ extern "C" {
 #define AF_PACKET      PF_PACKET   /**< Packet family.                */
 #define AF_CAN         PF_CAN      /**< Controller Area Network.      */
 #define AF_NET_MGMT    PF_NET_MGMT /**< Network management info.      */
+#define AF_LTE         PF_LTE      /**< Specific to LTE.              */
+#define AF_LOCAL       PF_LOCAL    /**< Local to host.                */
 
 /** Protocol numbers from IANA/BSD */
 enum net_ip_protocol {
@@ -74,11 +78,23 @@ enum net_ip_protocol_secure {
 	IPPROTO_DTLS_1_2 = 273,    /**< DTLS 1.2 protocol */
 };
 
+/* Protocol numbers for LTE protocols */
+enum net_lte_protocol {
+	NPROTO_AT = 513,
+	NPROTO_PDN = 514
+};
+
+/* Protocol numbers for LOCAL protocols */
+enum net_local_protocol {
+	NPROTO_DFU = 515
+};
+
 /** Socket type */
 enum net_sock_type {
-	SOCK_STREAM = 1,           /**< Stream socket type   */
-	SOCK_DGRAM,                /**< Datagram socket type */
-	SOCK_RAW                   /**< RAW socket type      */
+	SOCK_STREAM = 1,           /**< Stream socket type     */
+	SOCK_DGRAM,                /**< Datagram socket type   */
+	SOCK_RAW,                  /**< RAW socket type        */
+	SOCK_MGMT                  /**< Management socket type */
 };
 
 /** @brief Convert 16-bit value from network to host byte order.

include/net/socket.h

@@ -766,6 +766,8 @@ static inline char *inet_ntop(sa_family_t family, const void *src, char *dst,
 #define SO_REUSEADDR 2
 /** sockopt: Async error (ignored, for compatibility) */
 #define SO_ERROR 4
+#define SO_RCVTIMEO 20
+#define SO_BINDTODEVICE 25
 
 /** sockopt: Timestamp TX packets */
 #define SO_TIMESTAMPING 37
@@ -789,6 +791,34 @@ static inline char *inet_ntop(sa_family_t family, const void *src, char *dst,
 /** sockopt: Enable SOCKS5 for Socket */
 #define SO_SOCKS5 60
 
+/* Interface description structure */
+#define IFNAMSIZ 64
+
+struct ifreq {
+    char ifr_name[IFNAMSIZ]; /* Interface name */
+};
+
+/* Protocol level for PDN. */
+#define SOL_PDN 514
+
+/* Socket options for SOL_PDN level */
+#define SO_PDN_AF 1
+#define SO_PDN_CONTEXT_ID 2
+#define SO_PDN_STATE 3
+
+/* Protocol level for DFU. */
+#define SOL_DFU 515
+
+/* Socket options for SOL_DFU level */
+#define SO_DFU_FW_VERSION 1
+#define SO_DFU_RESOURCES 2
+#define SO_DFU_TIMEO 3
+#define SO_DFU_APPLY 4
+#define SO_DFU_REVERT 5
+#define SO_DFU_BACKUP_DELETE 6
+#define SO_DFU_OFFSET 7
+#define SO_DFU_ERROR 20
+
 /** @cond INTERNAL_HIDDEN */
 /**
  * @brief Registration information for a given BSD socket family.