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feat: add the padding if the packet length is odd while updating udp checksum

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This commit is contained in:
Yash Katkar 2024-03-29 21:05:16 +00:00
parent be06a6f5ff
commit f73194fbbb
1 changed files with 4 additions and 0 deletions
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4
examples/network/sta2eth/main/ethernet_iface.c
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@ -118,6 +118,10 @@ static void update_udp_checksum(uint16_t *udp_header, uint16_t* ip_header)
for (int i = 0; i < payload_len/2; i++) {
sum += htons(*ptr++);
}
// add the padding if the packet length is odd
if (payload_len & 1) {
sum += (*((uint8_t *)ptr) << 8);
}
// add some IP header data
ptr = ip_header + 6;
for (int i = 0; i < 4; i++) { // IP addresses