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Add netbuf_helpers.h temporary header

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This commit is contained in:
Angus Gratton 2015-08-20 15:33:08 +10:00
parent 491bf900c4
commit 7f983bc474
1 changed files with 28 additions and 0 deletions
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28
lwip/include/netbuf_helpers.h Normal file
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/* Some netbuf helpers that should probably be rolled into a patch to lwip soon */
#ifndef _NETBUF_HELPERS_H
#define _NETBUF_HELPERS_H
#include "lwip/netbuf.h"
/* Read a 16 bit wide unsigned integer, stored host order, from the netbuf */
inline static u16_t netbuf_read_u16_h(struct netbuf *netbuf, u16_t offs)
{
u16_t raw;
netbuf_copy_partial(netbuf, &raw, 2, offs);
return raw;
}
/* Read a 16 bit wide unsigned integer, stored network order, from the netbuf */
inline static u16_t netbuf_read_u16_n(struct netbuf *netbuf, u16_t offs)
{
return ntohs(netbuf_read_u16_h(netbuf, offs));
}
/* Read an 8 bit unsigned integer from the netbuf */
inline static u8_t netbuf_read_u8(struct netbuf *netbuf, u16_t offs)
{
u8_t result;
netbuf_copy_partial(netbuf, &result, 1, offs);
return result;
}
#endif