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Fix bug #60681: Initialize custom data in pbuf struct

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Add a #define that users can use to initialize LWIP_PBUF_CUSTOM_DATA fields.

see patch #10072
idea by Thomas Kindler <mail_lwip@t-kindler.de>
This commit is contained in:
Thomas Kindler 2021-05-28 10:34:21 +02:00 committed by Simon Goldschmidt
parent f5e7e8e576
commit de0b97861a
2 changed files with 14 additions and 0 deletions
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2
src/core/pbuf.c
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@ -186,6 +186,8 @@ pbuf_init_alloced_pbuf(struct pbuf *p, void *payload, u16_t tot_len, u16_t len,
p->flags = flags; p->flags = flags;
p->ref = 1; p->ref = 1;
p->if_idx = NETIF_NO_INDEX; p->if_idx = NETIF_NO_INDEX;
LWIP_PBUF_CUSTOM_DATA_INIT(p);
} }
/** /**

12
src/include/lwip/opt.h
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@ -1628,10 +1628,22 @@
/** /**
* LWIP_PBUF_CUSTOM_DATA: Store private data on pbufs (e.g. timestamps) * LWIP_PBUF_CUSTOM_DATA: Store private data on pbufs (e.g. timestamps)
* This extends struct pbuf so user can store custom data on every pbuf. * This extends struct pbuf so user can store custom data on every pbuf.
* e.g.:
* \#define LWIP_PBUF_CUSTOM_DATA u32_t myref;
*/ */
#if !defined LWIP_PBUF_CUSTOM_DATA || defined __DOXYGEN__ #if !defined LWIP_PBUF_CUSTOM_DATA || defined __DOXYGEN__
#define LWIP_PBUF_CUSTOM_DATA #define LWIP_PBUF_CUSTOM_DATA
#endif #endif
/**
* LWIP_PBUF_CUSTOM_DATA_INIT: Initialize private data on pbufs.
* e.g. for the above example definition:
* \#define LWIP_PBUF_CUSTOM_DATA(p) (p)->myref = 0
*/
#if !defined LWIP_PBUF_CUSTOM_DATA_INIT || defined __DOXYGEN__
#define LWIP_PBUF_CUSTOM_DATA_INIT(p)
#endif
/** /**
* @} * @}
*/ */