Collaboration diagram for Loopback interface:
Macros | |
| #define | LWIP_HAVE_LOOPIF LWIP_NETIF_LOOPBACK |
| #define | LWIP_LOOPIF_MULTICAST 0 |
| #define | LWIP_LOOPBACK_MAX_PBUFS 0 |
| #define | LWIP_NETIF_LOOPBACK_MULTITHREADING (!NO_SYS) |
Detailed Description
Macro Definition Documentation
| #define LWIP_HAVE_LOOPIF LWIP_NETIF_LOOPBACK |
| #define LWIP_LOOPBACK_MAX_PBUFS 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_LOOPBACK_MAX_PBUFS: Maximum number of pbufs on queue for loopback sending for each netif (0 = disabled)
Definition at line 1521 of file opt.h.
Referenced by netif_set_link_down().
| #define LWIP_LOOPIF_MULTICAST 0 |
| #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.
