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Matheus
24 lines
756 B
C
24 lines
756 B
C
#include <kernel/net.h>
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#include <arch/cpu.h>
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#include <logging.h>
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int udp_allocdesc(netdev_t *netdev, size_t requestedsize, netdesc_t *desc) {
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int e = netdev->allocdesc(requestedsize + sizeof(udpframe_t), desc);
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desc->curroffset += sizeof(udpframe_t);
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return e;
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}
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int udp_sendpacket(netdev_t *netdev, netdesc_t desc, uint32_t ip, uint16_t srcport, uint16_t dstport) {
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size_t len = desc.size - desc.curroffset;
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desc.curroffset -= sizeof(udpframe_t);
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udpframe_t frame = {
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.srcport = cpu_to_be_w(srcport),
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.dstport = cpu_to_be_w(dstport),
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.length = cpu_to_be_w(len),
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.checksum = 0xfefe
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};
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memcpy((void *)((uintptr_t)desc.address + desc.curroffset), &frame, sizeof(udpframe_t));
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return ipv4_sendpacket(netdev, desc, ip, IPV4_PROTO_UDP);
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}
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