59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
#include <grub/net/udp.h>
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#include <grub/net/ip.h>
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#include <grub/net/type_net.h>
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#include <grub/net/netbuff.h>
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#include <grub/net/protocol.h>
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/*Assumes that there is allocated memory to the header before the buffer address. */
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static grub_err_t
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send_udp_packet (struct grub_net_interface *inf, struct grub_net_protocol *prot, struct grub_net_buff *nb)
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{
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struct udphdr *udph;
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grub_err_t err;
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if((err = grub_netbuff_push (nb,sizeof(*udph)) ) != GRUB_ERR_NONE)
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return err;
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udph = (struct udphdr *) nb->data;
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udph->src = *((grub_uint16_t *) inf->card->tla->addr);
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udph->dst = *((grub_uint16_t *) inf->tla->addr);
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/*no chksum*/
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udph->chksum = 0;
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udph->len = sizeof (sizeof (*udph)) + nb->end - nb->head;
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return prot->next->send(inf,prot->next,nb);
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}
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static struct grub_net_protocol grub_udp_protocol =
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{
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.name = "udp",
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.send = send_udp_packet
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};
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void udp_ini(void)
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{
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grub_protocol_register (&grub_udp_protocol);
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}
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void udp_fini(void)
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{
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grub_protocol_unregister (&grub_udp_protocol);
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}
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/*
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int read_udp_packet (grub_uint16_t port,void *buffer,int *buff_len)
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{
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struct udphdr udph;
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udph.dst = 0;
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while ( udph.dst != port)
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{
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read_ip_packet (buffer,bufflen);
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grub_memcpy (&udph,buffer,sizeof (udph));
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}
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buffer += sizeof (udph);
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*buff_len -= sizeof (udph);
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}*/
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