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Diffstat (limited to 'sys/netinet')
-rw-r--r--sys/netinet/ip_output.c21
1 files changed, 16 insertions, 5 deletions
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
index 72497f6e5e3..2efb36c66b1 100644
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ip_output.c,v 1.108 2001/06/23 06:13:42 angelos Exp $ */
+/* $OpenBSD: ip_output.c,v 1.109 2001/06/23 06:42:37 angelos Exp $ */
/* $NetBSD: ip_output.c,v 1.28 1996/02/13 23:43:07 christos Exp $ */
/*
@@ -53,6 +53,8 @@
#include <netinet/in_pcb.h>
#include <netinet/in_var.h>
#include <netinet/ip_var.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
#ifdef vax
#include <machine/mtpr.h>
@@ -105,6 +107,7 @@ ip_output(m0, va_alist)
struct ip_moptions *imo;
va_list ap;
u_int8_t sproto = 0, donerouting = 0;
+ short csums;
#ifdef IPSEC
union sockaddr_union sdst;
u_int32_t sspi;
@@ -336,13 +339,17 @@ ip_output(m0, va_alist)
*/
if (m->m_pkthdr.csum & M_TCPV4_CSUM_OUT &&
!(ifp->if_capabilities & IFCAP_CSUM_TCPv4)) {
- /* XXX Compute TCP checksum */
+ csums = in4_cksum(m, IPPROTO_TCP, 0, m->m_pkthdr.len);
+ m_copydata(m, hlen + offsetof(struct tcphdr, th_sum),
+ sizeof(short), (caddr_t)&csums);
m->m_pkthdr.csum &= ~M_TCPV4_CSUM_OUT; /* Clear */
}
if (m->m_pkthdr.csum & M_UDPV4_CSUM_OUT &&
!(ifp->if_capabilities & IFCAP_CSUM_UDPv4)) {
- /* XXX Compute UDP checksum */
+ csums = in4_cksum(m, IPPROTO_UDP, 0, m->m_pkthdr.len);
+ m_copydata(m, hlen + offsetof(struct udphdr, uh_sum),
+ sizeof(short), (caddr_t)&csums);
m->m_pkthdr.csum &= ~M_UDPV4_CSUM_OUT; /* Clear */
}
@@ -605,13 +612,17 @@ sendit:
/* Catch routing changes wrt. hardware checksumming for TCP or UDP. */
if (m->m_pkthdr.csum & M_TCPV4_CSUM_OUT &&
!(ifp->if_capabilities & IFCAP_CSUM_TCPv4)) {
- /* XXX Compute TCP checksum */
+ csums = in4_cksum(m, IPPROTO_TCP, 0, m->m_pkthdr.len);
+ m_copydata(m, hlen + offsetof(struct tcphdr, th_sum),
+ sizeof(short), (caddr_t)&csums);
m->m_pkthdr.csum &= ~M_TCPV4_CSUM_OUT; /* Clear */
}
if (m->m_pkthdr.csum & M_UDPV4_CSUM_OUT &&
!(ifp->if_capabilities & IFCAP_CSUM_UDPv4)) {
- /* XXX Compute UDP checksum */
+ csums = in4_cksum(m, IPPROTO_UDP, 0, m->m_pkthdr.len);
+ m_copydata(m, hlen + offsetof(struct udphdr, uh_sum),
+ sizeof(short), (caddr_t)&csums);
m->m_pkthdr.csum &= ~M_UDPV4_CSUM_OUT; /* Clear */
}