Macros | |
| #define | LWIP_HAVE_LOOPIF (LWIP_NETIF_LOOPBACK && !LWIP_SINGLE_NETIF) |
| #define | LWIP_LOOPIF_MULTICAST 0 |
| #define | LWIP_NETIF_LOOPBACK 0 |
| #define | LWIP_LOOPBACK_MAX_PBUFS 0 |
| #define | LWIP_NETIF_LOOPBACK_MULTITHREADING (!NO_SYS) |
Detailed Description
Macro Definition Documentation
◆ LWIP_HAVE_LOOPIF
| #define LWIP_HAVE_LOOPIF (LWIP_NETIF_LOOPBACK && !LWIP_SINGLE_NETIF) |
LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1). This is only needed when no real netifs are available. If at least one other netif is available, loopback traffic uses this netif.
◆ LWIP_LOOPBACK_MAX_PBUFS
| #define LWIP_LOOPBACK_MAX_PBUFS 0 |
LWIP_LOOPBACK_MAX_PBUFS: Maximum number of pbufs on queue for loopback sending for each netif (0 = disabled)
◆ LWIP_LOOPIF_MULTICAST
| #define LWIP_LOOPIF_MULTICAST 0 |
LWIP_LOOPIF_MULTICAST==1: Support multicast/IGMP on loop interface (127.0.0.1).
◆ LWIP_NETIF_LOOPBACK
| #define LWIP_NETIF_LOOPBACK 0 |
LWIP_NETIF_LOOPBACK==1: Support sending packets with a destination IP address equal to the netif IP address, looping them back up the stack.
◆ LWIP_NETIF_LOOPBACK_MULTITHREADING
| #define LWIP_NETIF_LOOPBACK_MULTITHREADING (!NO_SYS) |
LWIP_NETIF_LOOPBACK_MULTITHREADING: Indicates whether threading is enabled in the system, as netifs must change how they behave depending on this setting for the LWIP_NETIF_LOOPBACK option to work. Setting this is needed to avoid reentering non-reentrant functions like tcp_input(). LWIP_NETIF_LOOPBACK_MULTITHREADING==1: Indicates that the user is using a multithreaded environment like tcpip.c. In this case, netif->input() is called directly. LWIP_NETIF_LOOPBACK_MULTITHREADING==0: Indicates a polling (or NO_SYS) setup. The packets are put on a list and netif_poll() must be called in the main application loop.
