LwIP
pbuf_layer is only used within LwIP.
 
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CodeScopeSTM32 Libraries and SamplesLwIPpbuf_layer

pbuf_layer enum

Syntax

enum {   PBUF_TRANSPORT = PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN,   PBUF_IP = PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN,   PBUF_LINK = PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN,   PBUF_RAW_TX = PBUF_LINK_ENCAPSULATION_HLEN,   PBUF_RAW = 0 };

Values

PBUF_TRANSPORT

Includes spare room for transport layer header, e.g. UDP header. Use this if you intend to pass the pbuf to functions like udp_send(). Read more...

PBUF_IP

Includes spare room for IP header. Use this if you intend to pass the pbuf to functions like raw_send(). Read more...
Includes spare room for link layer header (ethernet header). Use this if you intend to pass the pbuf to functions like ethernet_output(). @see PBUF_LINK_HLEN. Read more...

PBUF_RAW_TX

Includes spare room for additional encapsulation header before ethernet headers (e.g. 802.11). Use this if you intend to pass the pbuf to functions like netif->linkoutput(). @see PBUF_LINK_ENCAPSULATION_HLEN. Read more...

PBUF_RAW

Use this for input packets in a netif driver when calling netif->input() in the most common case - ethernet-layer netif driver. Read more...

References

LocationReferrerScopeText
pbuf.h:89
typedef enum {
pbuf.h:112
} pbuf_layer;
pbuf.c:224pbuf_alloc()::layerpbuf_alloc()
pbuf_alloc(pbuf_layer layer, u16_t length, pbuf_type type)
pbuf.c:363pbuf_alloced_custom()::lpbuf_alloced_custom()
pbuf_alloced_custom(pbuf_layer l, u16_t length, pbuf_type type, struct pbuf_custom *p,
pbuf.c:1278pbuf_coalesce()::layerpbuf_coalesce()
pbuf_coalesce(struct pbuf *p, pbuf_layer layer)
pbuf.c:1306pbuf_clone()::layerpbuf_clone()
pbuf_clone(pbuf_layer layer, pbuf_type type, struct pbuf *p)
pbuf.h:112pbuf_layer
} pbuf_layer;
pbuf.h:272pbuf_alloc()::lpbuf_alloc()
struct pbuf *pbuf_alloc(pbuf_layer l, u16_t length, pbuf_type type);
pbuf.h:275pbuf_alloced_custom()::lpbuf_alloced_custom()
struct pbuf *pbuf_alloced_custom(pbuf_layer l, u16_t length, pbuf_type type,
pbuf.h:301pbuf_coalesce()::layerpbuf_coalesce()
struct pbuf *pbuf_coalesce(struct pbuf *p, pbuf_layer layer);
pbuf.h:302pbuf_clone()::lpbuf_clone()
struct pbuf *pbuf_clone(pbuf_layer l, pbuf_type type, struct pbuf *p);
tcp_out.c:225tcp_pbuf_prealloc()::layertcp_pbuf_prealloc()
tcp_pbuf_prealloc(pbuf_layer layer, u16_t length, u16_t max_length,

Type Use

Variables of pbuf_layer type
pbuf_alloc()::layer
pbuf_clone()::layer
all items filtered out
pbuf_layer
all items filtered out
pbuf_layer
all items filtered out
Allocators of pbuf_layer
Deletors of pbuf_layer
pbuf_alloc()::layer
pbuf_clone()::layer
all items filtered out
pbuf_layer
pbuf_alloc()::layer
pbuf_clone()::layer
all items filtered out