53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
#include <grub/net.h>
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#include <grub/net/udp.h>
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#include <grub/net/ip.h>
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#include <grub/net/netbuff.h>
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#include <grub/time.h>
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grub_err_t
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grub_net_send_udp_packet (const grub_net_socket_t socket , struct grub_net_buff *nb)
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{
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struct udphdr *udph;
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grub_netbuff_push (nb,sizeof(*udph));
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udph = (struct udphdr *) nb->data;
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udph->src = grub_cpu_to_be16 (socket->in_port);
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udph->dst = grub_cpu_to_be16 (socket->out_port);
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/* No chechksum. */
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udph->chksum = 0;
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udph->len = grub_cpu_to_be16 (nb->tail - nb->data);
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return grub_net_send_ip_packet (socket->inf, &(socket->out_nla), nb);
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}
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grub_err_t
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grub_net_recv_udp_packet (struct grub_net_buff *nb)
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{
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struct udphdr *udph;
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grub_net_socket_t sock;
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udph = (struct udphdr *) nb->data;
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grub_netbuff_pull (nb, sizeof (*udph));
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FOR_NET_SOCKETS(sock)
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{
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if (grub_be_to_cpu16 (udph->dst) == sock->in_port)
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{
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if (sock->status == 0)
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sock->out_port = grub_be_to_cpu16 (udph->src);
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/* App protocol remove its own reader. */
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sock->app->read (sock,nb);
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/* If there is data, puts packet in socket list. */
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if ((nb->tail - nb->data) > 0)
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grub_net_put_packet (&sock->packs, nb);
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else
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grub_netbuff_free (nb);
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return GRUB_ERR_NONE;
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}
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}
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grub_netbuff_free (nb);
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return GRUB_ERR_NONE;
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}
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