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LWIP: make MEMP_NUM_NETBUF and MEMP_NUM_PBUF configurable #11681

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LWIP: make MEMP_NUM_NETBUF and MEMP_NUM_PBUF configurable #11681

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10 changes: 10 additions & 0 deletions features/lwipstack/lwipopts.h
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Original file line number Diff line number Diff line change
Expand Up @@ -226,14 +226,24 @@

// Number of non-pool pbufs.
// Each requires 92 bytes of RAM.
#ifdef MBED_CONF_LWIP_PBUF_NUM
#undef MEMP_NUM_PBUF
#define MEMP_NUM_PBUF MBED_CONF_LWIP_PBUF_NUM
#else
#ifndef MEMP_NUM_PBUF
#define MEMP_NUM_PBUF 8
#endif
#endif

// Each netbuf requires 64 bytes of RAM.
#ifdef MBED_CONF_LWIP_NETBUF_NUM
#undef MEMP_NUM_NETBUF
#define MEMP_NUM_NETBUF MBED_CONF_LWIP_NETBUF_NUM
#else
#ifndef MEMP_NUM_NETBUF
#define MEMP_NUM_NETBUF 8
#endif
#endif

// One netconn is needed for each UDPSocket, TCPSocket or TCPServer.
// Each requires 236 bytes of RAM (total rounded to multiple of 512).
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8 changes: 8 additions & 0 deletions features/lwipstack/mbed_lib.json
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Original file line number Diff line number Diff line change
Expand Up @@ -144,6 +144,14 @@
"ppp-thread-stacksize": {
"help": "Thread stack size for PPP (obsolete: use netsocket/ppp configuration instead)",
"value": 768
},
"pbuf-num": {
"help": "Number of pbufs in MEMP_PBUF pool",
"value": null
},
"netbuf-num": {
"help": "Number of netbufs in MEMP_NETBUF pool",
"value": null
}
},
"target_overrides": {
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