Add changes in 4.2.1.

[tcpdump] / print-tcp.c

diff --git a/print-tcp.c b/print-tcp.c
index 82840419181cf9d0ab6d7a48b6ef777e743f1fd9..88b461576df9a2cfe8d12d74ca87f91faff141cd 100644 (file)
--- 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