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Use inc_flags instead of the inc_isipv6 alias which so far

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had been the only flag with random usage patterns.
Switch inc_flags to be used as a real bit field by using
INC_ISIPV6 with bitops to check for the 'isipv6' condition.

While here fix a place or two where in case of v4 inc_flags
were not properly initialized before.[1]

Found by:	rwatson during review [1]
Discussed with:	rwatson
Reviewed by:	rwatson
MFC after:	4 weeks
This commit is contained in:
Bjoern A. Zeeb 2008-12-17 12:52:34 +00:00
parent 1fa9ee7d60
commit dcdb4371ca
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=186222
11 changed files with 37 additions and 38 deletions
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3
sys/dev/cxgb/ulp/tom/cxgb_cpl_io.c
View File

@ -3269,8 +3269,6 @@ syncache_add_accept_req(struct cpl_pass_accept_req *req, struct socket *lso, str
toep->tp_iss = toep->tp_delack_seq = toep->tp_rcv_wup = toep->tp_copied_seq = rcv_isn + 1;
inc.inc_isipv6 = 0;
inc.inc_len = 0;
inc.inc_faddr.s_addr = req->peer_ip;
inc.inc_laddr.s_addr = req->local_ip;
@ -3610,7 +3608,6 @@ syncache_expand_establish_req(struct cpl_pass_establish *req, struct socket **so
th.th_seq = req->rcv_isn;
th.th_flags = TH_ACK;
inc.inc_isipv6 = 0;
inc.inc_len = 0;
inc.inc_faddr.s_addr = req->peer_ip;
inc.inc_laddr.s_addr = req->local_ip;

2
sys/netinet/in_pcb.c
View File

@ -1700,7 +1700,7 @@ db_print_inconninfo(struct in_conninfo *inc, const char *name, int indent)
indent += 2;
#ifdef INET6
if (inc->inc_flags == 1) {
if (inc->inc_flags & INC_ISIPV6) {
/* IPv6. */
ip6_sprintf(laddr_str, &inc->inc6_laddr);
ip6_sprintf(faddr_str, &inc->inc6_faddr);

6
sys/netinet/in_pcb.h
View File

@ -106,6 +106,12 @@ struct in_conninfo {
/* protocol dependent part */
struct in_endpoints inc_ie;
};
/*
* Flags for inc_flags.
*/
#define INC_ISIPV6 0x01
#define inc_isipv6 inc_flags /* temp compatability */
#define inc_fport inc_ie.ie_fport
#define inc_lport inc_ie.ie_lport

8
sys/netinet/tcp_hostcache.c
View File

@ -249,7 +249,7 @@ tcp_hc_lookup(struct in_conninfo *inc)
/*
* Hash the foreign ip address.
*/
if (inc->inc_isipv6)
if (inc->inc_flags & INC_ISIPV6)
hash = HOSTCACHE_HASH6(&inc->inc6_faddr);
else
hash = HOSTCACHE_HASH(&inc->inc_faddr);
@ -267,7 +267,7 @@ tcp_hc_lookup(struct in_conninfo *inc)
* Iterate through entries in bucket row looking for a match.
*/
TAILQ_FOREACH(hc_entry, &hc_head->hch_bucket, rmx_q) {
if (inc->inc_isipv6) {
if (inc->inc_flags & INC_ISIPV6) {
if (memcmp(&inc->inc6_faddr, &hc_entry->ip6,
sizeof(inc->inc6_faddr)) == 0)
return hc_entry;
@ -305,7 +305,7 @@ tcp_hc_insert(struct in_conninfo *inc)
/*
* Hash the foreign ip address.
*/
if (inc->inc_isipv6)
if (inc->inc_flags & INC_ISIPV6)
hash = HOSTCACHE_HASH6(&inc->inc6_faddr);
else
hash = HOSTCACHE_HASH(&inc->inc_faddr);
@ -360,7 +360,7 @@ tcp_hc_insert(struct in_conninfo *inc)
* Initialize basic information of hostcache entry.
*/
bzero(hc_entry, sizeof(*hc_entry));
if (inc->inc_isipv6)
if (inc->inc_flags & INC_ISIPV6)
bcopy(&inc->inc6_faddr, &hc_entry->ip6, sizeof(hc_entry->ip6));
else
hc_entry->ip4 = inc->inc_faddr;

7
sys/netinet/tcp_input.c
View File

@ -737,9 +737,9 @@ tcp_input(struct mbuf *m, int off0)
"tp not listening", __func__));
bzero(&inc, sizeof(inc));
inc.inc_isipv6 = isipv6;
#ifdef INET6
if (isipv6) {
inc.inc_flags |= INC_ISIPV6;
inc.inc6_faddr = ip6->ip6_src;
inc.inc6_laddr = ip6->ip6_dst;
} else
@ -3338,14 +3338,11 @@ tcp_mssopt(struct in_conninfo *inc)
u_long maxmtu = 0;
u_long thcmtu = 0;
size_t min_protoh;
#ifdef INET6
int isipv6 = inc->inc_isipv6 ? 1 : 0;
#endif
KASSERT(inc != NULL, ("tcp_mssopt with NULL in_conninfo pointer"));
#ifdef INET6
if (isipv6) {
if (inc->inc_flags & INC_ISIPV6) {
mss = V_tcp_v6mssdflt;
maxmtu = tcp_maxmtu6(inc, NULL);
thcmtu = tcp_hc_getmtu(inc); /* IPv4 and IPv6 */

10
sys/netinet/tcp_subr.c
View File

@ -1306,7 +1306,6 @@ tcp_ctlinput(int cmd, struct sockaddr *sa, void *vip)
* value (if given) and then notify.
*/
bzero(&inc, sizeof(inc));
inc.inc_flags = 0; /* IPv4 */
inc.inc_faddr = faddr;
inc.inc_fibnum =
inp->inp_inc.inc_fibnum;
@ -1343,13 +1342,11 @@ tcp_ctlinput(int cmd, struct sockaddr *sa, void *vip)
if (inp != NULL)
INP_WUNLOCK(inp);
} else {
bzero(&inc, sizeof(inc));
inc.inc_fport = th->th_dport;
inc.inc_lport = th->th_sport;
inc.inc_faddr = faddr;
inc.inc_laddr = ip->ip_src;
#ifdef INET6
inc.inc_isipv6 = 0;
#endif
syncache_unreach(&inc, th);
}
INP_INFO_WUNLOCK(&V_tcbinfo);
@ -1419,11 +1416,12 @@ tcp6_ctlinput(int cmd, struct sockaddr *sa, void *d)
(struct sockaddr *)ip6cp->ip6c_src,
th.th_sport, cmd, NULL, notify);
bzero(&inc, sizeof(inc));
inc.inc_fport = th.th_dport;
inc.inc_lport = th.th_sport;
inc.inc6_faddr = ((struct sockaddr_in6 *)sa)->sin6_addr;
inc.inc6_laddr = ip6cp->ip6c_src->sin6_addr;
inc.inc_isipv6 = 1;
inc.inc_flags |= INC_ISIPV6;
INP_INFO_WLOCK(&V_tcbinfo);
syncache_unreach(&inc, &th);
INP_INFO_WUNLOCK(&V_tcbinfo);
@ -2263,7 +2261,7 @@ tcp_log_addrs(struct in_conninfo *inc, struct tcphdr *th, void *ip4hdr,
strcat(s, "TCP: [");
sp = s + strlen(s);
if (inc && inc->inc_isipv6 == 0) {
if (inc && ((inc->inc_flags & INC_ISIPV6) == 0)) {
inet_ntoa_r(inc->inc_faddr, sp);
sp = s + strlen(s);
sprintf(sp, "]:%i to [", ntohs(inc->inc_fport));

31
sys/netinet/tcp_syncache.c
View File

@ -430,7 +430,7 @@ syncache_lookup(struct in_conninfo *inc, struct syncache_head **schp)
struct syncache_head *sch;
#ifdef INET6
if (inc->inc_isipv6) {
if (inc->inc_flags & INC_ISIPV6) {
sch = &V_tcp_syncache.hashbase[
SYNCACHE_HASH6(inc, V_tcp_syncache.hashmask)];
*schp = sch;
@ -454,7 +454,7 @@ syncache_lookup(struct in_conninfo *inc, struct syncache_head **schp)
/* Circle through bucket row to find matching entry. */
TAILQ_FOREACH(sc, &sch->sch_bucket, sc_hash) {
#ifdef INET6
if (sc->sc_inc.inc_isipv6)
if (sc->sc_inc.inc_flags & INC_ISIPV6)
continue;
#endif
if (ENDPTS_EQ(&inc->inc_ie, &sc->sc_inc.inc_ie))
@ -643,9 +643,9 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
INP_WLOCK(inp);
/* Insert new socket into PCB hash list. */
inp->inp_inc.inc_isipv6 = sc->sc_inc.inc_isipv6;
inp->inp_inc.inc_flags = sc->sc_inc.inc_flags;
#ifdef INET6
if (sc->sc_inc.inc_isipv6) {
if (sc->sc_inc.inc_flags & INC_ISIPV6) {
inp->in6p_laddr = sc->sc_inc.inc6_laddr;
} else {
inp->inp_vflag &= ~INP_IPV6;
@ -662,7 +662,7 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
* put the PCB on the hash lists.
*/
#ifdef INET6
if (sc->sc_inc.inc_isipv6)
if (sc->sc_inc.inc_flags & INC_ISIPV6)
inp->in6p_laddr = in6addr_any;
else
#endif
@ -676,7 +676,7 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
printf("syncache_socket: could not copy policy\n");
#endif
#ifdef INET6
if (sc->sc_inc.inc_isipv6) {
if (sc->sc_inc.inc_flags & INC_ISIPV6) {
struct inpcb *oinp = sotoinpcb(lso);
struct in6_addr laddr6;
struct sockaddr_in6 sin6;
@ -993,7 +993,7 @@ _syncache_add(struct in_conninfo *inc, struct tcpopt *to, struct tcphdr *th,
cred = crhold(so->so_cred);
#ifdef INET6
if (inc->inc_isipv6 &&
if ((inc->inc_flags & INC_ISIPV6) &&
(inp->inp_flags & IN6P_AUTOFLOWLABEL))
autoflowlabel = 1;
#endif
@ -1022,7 +1022,7 @@ _syncache_add(struct in_conninfo *inc, struct tcpopt *to, struct tcphdr *th,
* Remember the IP options, if any.
*/
#ifdef INET6
if (!inc->inc_isipv6)
if (!(inc->inc_flags & INC_ISIPV6))
#endif
ipopts = (m) ? ip_srcroute(m) : NULL;
@ -1123,10 +1123,11 @@ _syncache_add(struct in_conninfo *inc, struct tcpopt *to, struct tcphdr *th,
sc->sc_cred = cred;
cred = NULL;
sc->sc_ipopts = ipopts;
/* XXX-BZ this fib assignment is just useless. */
sc->sc_inc.inc_fibnum = inp->inp_inc.inc_fibnum;
bcopy(inc, &sc->sc_inc, sizeof(struct in_conninfo));
#ifdef INET6
if (!inc->inc_isipv6)
if (!(inc->inc_flags & INC_ISIPV6))
#endif
{
sc->sc_ip_tos = ip_tos;
@ -1272,7 +1273,7 @@ syncache_respond(struct syncache *sc)
hlen =
#ifdef INET6
(sc->sc_inc.inc_isipv6) ? sizeof(struct ip6_hdr) :
(sc->sc_inc.inc_flags & INC_ISIPV6) ? sizeof(struct ip6_hdr) :
#endif
sizeof(struct ip);
tlen = hlen + sizeof(struct tcphdr);
@ -1299,7 +1300,7 @@ syncache_respond(struct syncache *sc)
m->m_pkthdr.rcvif = NULL;
#ifdef INET6
if (sc->sc_inc.inc_isipv6) {
if (sc->sc_inc.inc_flags & INC_ISIPV6) {
ip6 = mtod(m, struct ip6_hdr *);
ip6->ip6_vfc = IPV6_VERSION;
ip6->ip6_nxt = IPPROTO_TCP;
@ -1390,7 +1391,7 @@ syncache_respond(struct syncache *sc)
to.to_signature, IPSEC_DIR_OUTBOUND);
#endif
#ifdef INET6
if (sc->sc_inc.inc_isipv6)
if (sc->sc_inc.inc_flags & INC_ISIPV6)
ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) + optlen);
else
#endif
@ -1399,7 +1400,7 @@ syncache_respond(struct syncache *sc)
optlen = 0;
#ifdef INET6
if (sc->sc_inc.inc_isipv6) {
if (sc->sc_inc.inc_flags & INC_ISIPV6) {
th->th_sum = 0;
th->th_sum = in6_cksum(m, IPPROTO_TCP, hlen,
tlen + optlen - hlen);
@ -1653,7 +1654,7 @@ syncookie_lookup(struct in_conninfo *inc, struct syncache_head *sch,
sc->sc_iss = ack;
#ifdef INET6
if (inc->inc_isipv6) {
if (inc->inc_flags & INC_ISIPV6) {
if (sotoinpcb(so)->inp_flags & IN6P_AUTOFLOWLABEL)
sc->sc_flowlabel = md5_buffer[1] & IPV6_FLOWLABEL_MASK;
} else
@ -1743,7 +1744,7 @@ syncache_pcblist(struct sysctl_req *req, int max_pcbs, int *pcbs_exported)
continue;
bzero(&xt, sizeof(xt));
xt.xt_len = sizeof(xt);
if (sc->sc_inc.inc_isipv6)
if (sc->sc_inc.inc_flags & INC_ISIPV6)
xt.xt_inp.inp_vflag = INP_IPV6;
else
xt.xt_inp.inp_vflag = INP_IPV4;

2
sys/netinet/tcp_timewait.c
View File

@ -538,7 +538,7 @@ tcp_twrespond(struct tcptw *tw, int flags)
struct tcpopt to;
#ifdef INET6
struct ip6_hdr *ip6 = NULL;
int isipv6 = inp->inp_inc.inc_isipv6;
int isipv6 = inp->inp_inc.inc_flags & INC_ISIPV6;
#endif
INP_WLOCK_ASSERT(inp);

2
sys/netinet/tcp_usrreq.c
View File

@ -519,7 +519,7 @@ tcp6_usr_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
}
inp->inp_vflag &= ~INP_IPV4;
inp->inp_vflag |= INP_IPV6;
inp->inp_inc.inc_isipv6 = 1;
inp->inp_inc.inc_flags |= INC_ISIPV6;
if (prison_remote_ip6(td->td_ucred, &sin6p->sin6_addr) != 0) {
error = EINVAL;
goto out;

2
sys/netinet6/icmp6.c
View File

@ -1148,7 +1148,7 @@ icmp6_mtudisc_update(struct ip6ctlparam *ip6cp, int validated)
mtu = IPV6_MMTU - 8;
bzero(&inc, sizeof(inc));
inc.inc_flags = 1; /* IPv6 */
inc.inc_flags |= INC_ISIPV6;
inc.inc6_faddr = *dst;
if (in6_setscope(&inc.inc6_faddr, m->m_pkthdr.rcvif, NULL))
return;

2
sys/netinet6/ip6_output.c
View File

@ -1320,7 +1320,7 @@ ip6_getpmtu(struct route_in6 *ro_pmtu, struct route_in6 *ro,
struct in_conninfo inc;
bzero(&inc, sizeof(inc));
inc.inc_flags = 1; /* IPv6 */
inc.inc_flags |= INC_ISIPV6;
inc.inc6_faddr = *dst;
if (ifp == NULL)