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使用自定义的udp_hdr替换linux的udphdr

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luwenpeng
2023-02-17 17:53:21 +08:00
parent 0ba7fefba5
commit 551abde887
6 changed files with 33 additions and 25 deletions
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13
common/src/utils.cpp
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@@ -2,12 +2,11 @@
#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include <linux/if.h>
#include <net/if.h>
#include <netinet/ip.h>
#include <netinet/ether.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <netinet/ip.h>
#include <netinet/udp.h>
#include <netinet/ether.h>
#include "utils.h"
#include "log.h"
@@ -161,11 +160,11 @@ static int checksum(u_int16_t *addr, int len)
return sum;
}
void build_udp_header(const char *l3_hdr, int l3_hdr_len, struct udphdr *udp_hdr, u_int16_t udp_sport, u_int16_t udp_dport, int payload_len)
void build_udp_header(const char *l3_hdr, int l3_hdr_len, struct udp_hdr *udp_hdr, u_int16_t udp_sport, u_int16_t udp_dport, int payload_len)
{
memset(udp_hdr, 0, sizeof(struct udphdr));
memset(udp_hdr, 0, sizeof(struct udp_hdr));
int udp_hlen = sizeof(struct udphdr) + payload_len;
int udp_hlen = sizeof(struct udp_hdr) + payload_len;
udp_hdr->uh_sport = htons(udp_sport);
udp_hdr->uh_dport = htons(udp_dport);