abc/lwip
1
0
Fork 0
mirror of https://git.savannah.nongnu.org/git/lwip.git synced 2026-05-28 11:07:51 +08:00
Code Issues Packages Projects Releases Wiki Activity

Slightly optimize pbuf_alloc: encode 'header offset' in 'enum pbuf_layer' instead of switch/case (which was duplicated in pbuf_alloc and pbuf_alloced_custom)

Browse Source
This commit is contained in:
goldsimon
2017-06-21 13:37:05 +02:00
parent 11da4ef024
commit 79d69ce526
2 changed files with 9 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/include/lwip/pbuf.h
View File

@@ -90,25 +90,25 @@ typedef enum {
/** 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().
*/
PBUF_TRANSPORT,
PBUF_TRANSPORT = PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN,
/** Includes spare room for IP header.
* Use this if you intend to pass the pbuf to functions like raw_send().
*/
PBUF_IP,
PBUF_IP = PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + PBUF_IP_HLEN,
/** 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
*/
PBUF_LINK,
PBUF_LINK = PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN,
/** 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
*/
PBUF_RAW_TX,
PBUF_RAW_TX = PBUF_LINK_ENCAPSULATION_HLEN,
/** Use this for input packets in a netif driver when calling netif->input()
* in the most common case - ethernet-layer netif driver. */
PBUF_RAW
PBUF_RAW = 0
} pbuf_layer;