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Move from passing a wildcard boolean to a general set up lookup flags into

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in_pcb_lport(), in_pcblookup_local(), and in_pcblookup_hash(), and similarly
for IPv6 functions.  In the future, we would like to support other flags
relating to locking strategy.

This change doesn't appear to modify the KBI in practice, as callers already
passed in INPLOOKUP_WILDCARD rather than a simple boolean.

MFC after:      3 weeks
Reviewed by:    bz
Sponsored by:   Juniper Networks, Inc.
This commit is contained in:
Robert Watson 2011-05-23 15:23:18 +00:00
parent 82a5be494a
commit 68e0d7e06a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=222215
3 changed files with 37 additions and 24 deletions
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30
sys/netinet/in_pcb.c
View File

@ -329,7 +329,7 @@ in_pcbbind(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred)
#if defined(INET) || defined(INET6)
int
in_pcb_lport(struct inpcb *inp, struct in_addr *laddrp, u_short *lportp,
struct ucred *cred, int wild)
struct ucred *cred, int lookupflags)
{
struct inpcbinfo *pcbinfo;
struct inpcb *tmpinp;
@ -424,14 +424,14 @@ in_pcb_lport(struct inpcb *inp, struct in_addr *laddrp, u_short *lportp,
#ifdef INET6
if ((inp->inp_vflag & INP_IPV6) != 0)
tmpinp = in6_pcblookup_local(pcbinfo,
&inp->in6p_laddr, lport, wild, cred);
&inp->in6p_laddr, lport, lookupflags, cred);
#endif
#if defined(INET) && defined(INET6)
else
#endif
#ifdef INET
tmpinp = in_pcblookup_local(pcbinfo, laddr,
lport, wild, cred);
lport, lookupflags, cred);
#endif
} while (tmpinp != NULL);
@ -464,7 +464,7 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
struct in_addr laddr;
u_short lport = 0;
int wild = 0, reuseport = (so->so_options & SO_REUSEPORT);
int lookupflags = 0, reuseport = (so->so_options & SO_REUSEPORT);
int error;
/*
@ -480,7 +480,7 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
if (nam != NULL && laddr.s_addr != INADDR_ANY)
return (EINVAL);
if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
wild = INPLOOKUP_WILDCARD;
lookupflags = INPLOOKUP_WILDCARD;
if (nam == NULL) {
if ((error = prison_local_ip4(cred, &laddr)) != 0)
return (error);
@ -561,7 +561,7 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
return (EADDRINUSE);
}
t = in_pcblookup_local(pcbinfo, sin->sin_addr,
lport, wild, cred);
lport, lookupflags, cred);
if (t && (t->inp_flags & INP_TIMEWAIT)) {
/*
* XXXRW: If an incpb has had its timewait
@ -590,7 +590,7 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
if (*lportp != 0)
lport = *lportp;
if (lport == 0) {
error = in_pcb_lport(inp, &laddr, &lport, cred, wild);
error = in_pcb_lport(inp, &laddr, &lport, cred, lookupflags);
if (error != 0)
return (error);
@ -1307,7 +1307,7 @@ in_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp)
#define INP_LOOKUP_MAPPED_PCB_COST 3
struct inpcb *
in_pcblookup_local(struct inpcbinfo *pcbinfo, struct in_addr laddr,
u_short lport, int wild_okay, struct ucred *cred)
u_short lport, int lookupflags, struct ucred *cred)
{
struct inpcb *inp;
#ifdef INET6
@ -1317,9 +1317,12 @@ in_pcblookup_local(struct inpcbinfo *pcbinfo, struct in_addr laddr,
#endif
int wildcard;
KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
("%s: invalid lookup flags %d", __func__, lookupflags));
INP_INFO_LOCK_ASSERT(pcbinfo);
if (!wild_okay) {
if ((lookupflags & INPLOOKUP_WILDCARD) == 0) {
struct inpcbhead *head;
/*
* Look for an unconnected (wildcard foreign addr) PCB that
@ -1425,13 +1428,16 @@ in_pcblookup_local(struct inpcbinfo *pcbinfo, struct in_addr laddr,
*/
struct inpcb *
in_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in_addr faddr,
u_int fport_arg, struct in_addr laddr, u_int lport_arg, int wildcard,
u_int fport_arg, struct in_addr laddr, u_int lport_arg, int lookupflags,
struct ifnet *ifp)
{
struct inpcbhead *head;
struct inpcb *inp, *tmpinp;
u_short fport = fport_arg, lport = lport_arg;
KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
("%s: invalid lookup flags %d", __func__, lookupflags));
INP_INFO_LOCK_ASSERT(pcbinfo);
/*
@ -1467,7 +1473,7 @@ in_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in_addr faddr,
/*
* Then look for a wildcard match, if requested.
*/
if (wildcard == INPLOOKUP_WILDCARD) {
if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
struct inpcb *local_wild = NULL, *local_exact = NULL;
#ifdef INET6
struct inpcb *local_wild_mapped = NULL;
@ -1538,7 +1544,7 @@ in_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in_addr faddr,
if (local_wild_mapped != NULL)
return (local_wild_mapped);
#endif /* defined(INET6) */
} /* if (wildcard == INPLOOKUP_WILDCARD) */
} /* if ((lookupflags & INPLOOKUP_WILDCARD) != 0) */
return (NULL);
}

25
sys/netinet6/in6_pcb.c
View File

@ -111,7 +111,8 @@ in6_pcbbind(register struct inpcb *inp, struct sockaddr *nam,
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL;
struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
u_short lport = 0;
int error, wild = 0, reuseport = (so->so_options & SO_REUSEPORT);
int error, lookupflags = 0;
int reuseport = (so->so_options & SO_REUSEPORT);
INP_INFO_WLOCK_ASSERT(pcbinfo);
INP_WLOCK_ASSERT(inp);
@ -121,7 +122,7 @@ in6_pcbbind(register struct inpcb *inp, struct sockaddr *nam,
if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
return (EINVAL);
if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
wild = INPLOOKUP_WILDCARD;
lookupflags = INPLOOKUP_WILDCARD;
if (nam == NULL) {
if ((error = prison_local_ip6(cred, &inp->in6p_laddr,
((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
@ -226,7 +227,7 @@ in6_pcbbind(register struct inpcb *inp, struct sockaddr *nam,
#endif
}
t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr,
lport, wild, cred);
lport, lookupflags, cred);
if (t && (reuseport & ((t->inp_flags & INP_TIMEWAIT) ?
intotw(t)->tw_so_options :
t->inp_socket->so_options)) == 0)
@ -238,7 +239,7 @@ in6_pcbbind(register struct inpcb *inp, struct sockaddr *nam,
in6_sin6_2_sin(&sin, sin6);
t = in_pcblookup_local(pcbinfo, sin.sin_addr,
lport, wild, cred);
lport, lookupflags, cred);
if (t && t->inp_flags & INP_TIMEWAIT) {
if ((reuseport &
intotw(t)->tw_so_options) == 0 &&
@ -652,14 +653,17 @@ in6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr *dst,
*/
struct inpcb *
in6_pcblookup_local(struct inpcbinfo *pcbinfo, struct in6_addr *laddr,
u_short lport, int wild_okay, struct ucred *cred)
u_short lport, int lookupflags, struct ucred *cred)
{
register struct inpcb *inp;
int matchwild = 3, wildcard;
KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
("%s: invalid lookup flags %d", __func__, lookupflags));
INP_INFO_WLOCK_ASSERT(pcbinfo);
if (!wild_okay) {
if ((lookupflags & INPLOOKUP_WILDCARD) == 0) {
struct inpcbhead *head;
/*
* Look for an unconnected (wildcard foreign addr) PCB that
@ -815,7 +819,7 @@ in6_rtchange(struct inpcb *inp, int errno)
*/
struct inpcb *
in6_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
u_int fport_arg, struct in6_addr *laddr, u_int lport_arg, int wildcard,
u_int fport_arg, struct in6_addr *laddr, u_int lport_arg, int lookupflags,
struct ifnet *ifp)
{
struct inpcbhead *head;
@ -823,6 +827,9 @@ in6_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
u_short fport = fport_arg, lport = lport_arg;
int faith;
KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
("%s: invalid lookup flags %d", __func__, lookupflags));
INP_INFO_LOCK_ASSERT(pcbinfo);
if (faithprefix_p != NULL)
@ -862,7 +869,7 @@ in6_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
/*
* Then look for a wildcard match, if requested.
*/
if (wildcard == INPLOOKUP_WILDCARD) {
if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
struct inpcb *local_wild = NULL, *local_exact = NULL;
struct inpcb *jail_wild = NULL;
int injail;
@ -919,7 +926,7 @@ in6_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
return (local_exact);
if (local_wild != NULL)
return (local_wild);
} /* if (wildcard == INPLOOKUP_WILDCARD) */
} /* if ((lookupflags & INPLOOKUP_WILDCARD) != 0) */
/*
* Not found.

6
sys/netinet6/in6_src.c
View File

@ -851,7 +851,7 @@ in6_pcbsetport(struct in6_addr *laddr, struct inpcb *inp, struct ucred *cred)
{
struct socket *so = inp->inp_socket;
u_int16_t lport = 0;
int error, wild = 0;
int error, lookupflags = 0;
#ifdef INVARIANTS
struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
#endif
@ -866,11 +866,11 @@ in6_pcbsetport(struct in6_addr *laddr, struct inpcb *inp, struct ucred *cred)
/* XXX: this is redundant when called from in6_pcbbind */
if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
wild = INPLOOKUP_WILDCARD;
lookupflags = INPLOOKUP_WILDCARD;
inp->inp_flags |= INP_ANONPORT;
error = in_pcb_lport(inp, NULL, &lport, cred, wild);
error = in_pcb_lport(inp, NULL, &lport, cred, lookupflags);
if (error != 0)
return (error);