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divert(4): make it compilable and working without INET

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Differential revision:	https://reviews.freebsd.org/D36383
This commit is contained in:
Gleb Smirnoff 2022-08-30 15:09:21 -07:00
parent f1fb051716
commit e72c522858
2 changed files with 21 additions and 10 deletions
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2
sys/conf/files
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@ -4333,7 +4333,7 @@ netinet/in_prot.c optional inet | inet6
netinet/in_proto.c optional inet | inet6
netinet/in_rmx.c optional inet
netinet/in_rss.c optional inet rss
netinet/ip_divert.c optional inet ipdivert ipfirewall
netinet/ip_divert.c optional ipdivert ipfirewall
netinet/ip_ecn.c optional inet | inet6
netinet/ip_encap.c optional inet | inet6
netinet/ip_fastfwd.c optional inet

29
sys/netinet/ip_divert.c
View File

@ -35,9 +35,6 @@ __FBSDID("$FreeBSD$");
#include "opt_inet.h"
#include "opt_inet6.h"
#include "opt_sctp.h"
#ifndef INET
#error "IPDIVERT requires INET" /* XXX! */
#endif
#include <sys/param.h>
#include <sys/eventhandler.h>
@ -171,9 +168,6 @@ MTX_SYSINIT(divert, &divert_mtx, "divert(4) socket pcb lists", MTX_DEF);
static void
divert_packet(struct mbuf *m, bool incoming)
{
#if defined(SCTP) || defined(SCTP_SUPPORT)
struct ip *ip;
#endif
struct divcb *dcb;
u_int16_t nport;
struct sockaddr_in divsrc;
@ -190,14 +184,17 @@ divert_packet(struct mbuf *m, bool incoming)
if (m->m_len < sizeof(struct ip) &&
(m = m_pullup(m, sizeof(struct ip))) == NULL)
return;
#ifdef INET
/* Delayed checksums are currently not compatible with divert. */
if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA) {
in_delayed_cksum(m);
m->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA;
}
#endif
#if defined(SCTP) || defined(SCTP_SUPPORT)
if (m->m_pkthdr.csum_flags & CSUM_SCTP) {
struct ip *ip;
ip = mtod(m, struct ip *);
sctp_delayed_cksum(m, (uint32_t)(ip->ip_hl << 2));
m->m_pkthdr.csum_flags &= ~CSUM_SCTP;
@ -379,9 +376,11 @@ div_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
ip = mtod(m, struct ip *);
switch (ip->ip_v) {
#ifdef INET
case IPVERSION:
family = AF_INET;
break;
#endif
#ifdef INET6
case IPV6_VERSION >> 4:
family = AF_INET6;
@ -414,17 +413,22 @@ div_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
static int
div_output_outbound(int family, struct socket *so, struct mbuf *m)
{
struct ip *const ip = mtod(m, struct ip *);
int error;
switch (family) {
#ifdef INET
case AF_INET:
{
struct ip *const ip = mtod(m, struct ip *);
/* Don't allow packet length sizes that will crash. */
if (((u_short)ntohs(ip->ip_len) > m->m_pkthdr.len)) {
m_freem(m);
return (EINVAL);
}
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
@ -446,11 +450,13 @@ div_output_outbound(int family, struct socket *so, struct mbuf *m)
error = 0;
switch (family) {
#ifdef INET
case AF_INET:
error = ip_output(m, NULL, NULL,
((so->so_options & SO_DONTROUTE) ? IP_ROUTETOIF : 0)
| IP_ALLOWBROADCAST | IP_RAWOUTPUT, NULL, NULL);
break;
#endif
#ifdef INET6
case AF_INET6:
error = ip6_output(m, NULL, NULL, 0, NULL, NULL, NULL);
@ -472,7 +478,6 @@ static int
div_output_inbound(int family, struct socket *so, struct mbuf *m,
struct sockaddr_in *sin)
{
const struct ip *ip;
struct ifaddr *ifa;
if (m->m_pkthdr.rcvif == NULL) {
@ -497,7 +502,11 @@ div_output_inbound(int family, struct socket *so, struct mbuf *m,
#endif
/* Send packet to input processing via netisr */
switch (family) {
#ifdef INET
case AF_INET:
{
const struct ip *ip;
ip = mtod(m, struct ip *);
/*
* Restore M_BCAST flag when destination address is
@ -510,6 +519,8 @@ div_output_inbound(int family, struct socket *so, struct mbuf *m,
netisr_queue_src(NETISR_IP, (uintptr_t)so, m);
DIVSTAT_INC(inbound);
break;
}
#endif
#ifdef INET6
case AF_INET6:
netisr_queue_src(NETISR_IPV6, (uintptr_t)so, m);