X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/730d36df2c5582096e293cffc81e1682bbf26ef2..309ca62193772fd8ba532fd413b51a61be0c741e:/print-tcp.c?ds=sidebyside

diff --git a/print-tcp.c b/print-tcp.c
index 24025e59..88b46157 100644
--- a/print-tcp.c
+++ b/print-tcp.c
@@ -129,30 +129,8 @@ static int tcp_cksum(register const struct ip *ip,
 		     register const struct tcphdr *tp,
 		     register u_int len)
 {
-        struct phdr {
-                u_int32_t src;
-                u_int32_t dst;
-                u_char mbz;
-                u_char proto;
-                u_int16_t len;
-        } ph;
-        struct cksum_vec vec[2];
-
-        /* pseudo-header.. */
-        ph.len = htons((u_int16_t)len);
-        ph.mbz = 0;
-        ph.proto = IPPROTO_TCP;
-        memcpy(&ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t));
-        if (IP_HL(ip) == 5)
-                memcpy(&ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t));
-        else
-                ph.dst = ip_finddst(ip);
-
-        vec[0].ptr = (const u_int8_t *)(void *)&ph;
-        vec[0].len = sizeof(ph);
-        vec[1].ptr = (const u_int8_t *)tp;
-        vec[1].len = len;
-        return in_cksum(vec, 2);
+	return (nextproto4_cksum(ip, (const u_int8_t *)tp, len,
+	    IPPROTO_TCP));
 }
 
 void
@@ -432,7 +410,7 @@ tcp_print(register const u_char *bp, register u_int length,
 #ifdef INET6
                 else if (IP_V(ip) == 6 && ip6->ip6_plen) {
                         if (TTEST2(tp->th_sport, length)) {
-                                sum = nextproto6_cksum(ip6, (u_short *)tp, length, IPPROTO_TCP);
+                                sum = nextproto6_cksum(ip6, (const u_int8_t *)tp, length, IPPROTO_TCP);
                                 tcp_sum = EXTRACT_16BITS(&tp->th_sum);
 
                                 (void)printf(", cksum 0x%04x", tcp_sum);