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task #6849: added udp_send(_to/_if) functions that take a precalculated checksum, added pbuf_fill_chksum() to copy data into a pbuf and at the same time calculating the checksum for that data

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goldsimon
2010-04-30 20:39:45 +00:00
parent 3685bc4828
commit f98e5717e5
5 changed files with 133 additions and 5 deletions
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4
src/include/lwip/pbuf.h
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@@ -111,6 +111,10 @@ err_t pbuf_copy(struct pbuf *p_to, struct pbuf *p_from);
u16_t pbuf_copy_partial(struct pbuf *p, void *dataptr, u16_t len, u16_t offset);
err_t pbuf_take(struct pbuf *buf, const void *dataptr, u16_t len);
struct pbuf *pbuf_coalesce(struct pbuf *p, pbuf_layer layer);
#if LWIP_CHECKSUM_ON_COPY
err_t pbuf_fill_chksum(struct pbuf *p, u16_t start_offset, const void *dataptr,
u16_t len, u16_t *chksum);
#endif /* LWIP_CHECKSUM_ON_COPY */
#ifdef __cplusplus
}

12
src/include/lwip/udp.h
View File

@@ -135,6 +135,18 @@ err_t udp_sendto (struct udp_pcb *pcb, struct pbuf *p,
ip_addr_t *dst_ip, u16_t dst_port);
err_t udp_send (struct udp_pcb *pcb, struct pbuf *p);
#if LWIP_CHECKSUM_ON_COPY
err_t udp_sendto_if_chksum(struct udp_pcb *pcb, struct pbuf *p,
ip_addr_t *dst_ip, u16_t dst_port,
struct netif *netif, u8_t have_chksum,
u16_t chksum);
err_t udp_sendto_chksum(struct udp_pcb *pcb, struct pbuf *p,
ip_addr_t *dst_ip, u16_t dst_port,
u8_t have_chksum, u16_t chksum);
err_t udp_send_chksum(struct udp_pcb *pcb, struct pbuf *p,
u8_t have_chksum, u16_t chksum);
#endif /* LWIP_CHECKSUM_ON_COPY */
#define udp_flags(pcb) ((pcb)->flags)
#define udp_setflags(pcb, f) ((pcb)->flags = (f))