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ip4_frag.h File Reference
IP fragmentation/reassembly. More...
Go to the source code of this file.
Data Structures | |
| struct | ip_reassdata |
| IP reassembly helper struct. More... | |
| struct | pbuf_custom_ref |
| A custom pbuf that holds a reference to another pbuf, which is freed when this custom pbuf is freed. More... | |
Functions | |
| void | ip_reass_tmr (void) |
| Reassembly timer base function for both NO_SYS == 0 and 1 (!). | |
| struct pbuf * | ip4_reass (struct pbuf *p) |
| Reassembles incoming IP fragments into an IP datagram. | |
| err_t | ip4_frag (struct pbuf *p, struct netif *netif, const ip4_addr_t *dest) |
| Fragment an IP datagram if too large for the netif. | |
Detailed Description
IP fragmentation/reassembly.
Definition in file ip4_frag.h.
Function Documentation
| err_t ip4_frag | ( | struct pbuf * | p, |
| struct netif * | netif, | ||
| const ip4_addr_t * | dest | ||
| ) |
Fragment an IP datagram if too large for the netif.
Chop the datagram in MTU sized chunks and send them in order by using a fixed size static memory buffer (PBUF_REF) or point PBUF_REFs into p (depending on IP_FRAG_USES_STATIC_BUF).
- Parameters:
-
p ip packet to send netif the netif on which to send dest destination ip address to which to send
- Returns:
- ERR_OK if sent successfully, err_t otherwise
Definition at line 692 of file lwip_ip4_frag.c.
Reassembles incoming IP fragments into an IP datagram.
- Parameters:
-
p points to a pbuf chain of the fragment
- Returns:
- NULL if reassembly is incomplete, ? otherwise
Definition at line 484 of file lwip_ip4_frag.c.
| void ip_reass_tmr | ( | void | ) |
Reassembly timer base function for both NO_SYS == 0 and 1 (!).
Should be called every 1000 msec (defined by IP_TMR_INTERVAL).
Definition at line 124 of file lwip_ip4_frag.c.
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