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Convert netipx to use queue(9) doubly-linked lists instead of home-brew

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linked lists for ipxpcb's.
This commit is contained in:
Robert Watson 2004-12-30 17:49:40 +00:00
parent ffeb1a497a
commit 80a4dabe7d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=139444
6 changed files with 45 additions and 38 deletions
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19
sys/netipx/ipx_input.c
View File

@ -1,4 +1,5 @@
/*
* Copyright (c) 2004, Robert N. M. Watson
* Copyright (c) 1995, Mike Mitchell
* Copyright (c) 1984, 1985, 1986, 1987, 1993
* The Regents of the University of California. All rights reserved.
@ -84,8 +85,11 @@ const union ipx_host ipx_broadhost = { .s_host[0] = 0xffff,
struct ipxstat ipxstat;
struct sockaddr_ipx ipx_netmask, ipx_hostmask;
struct ipxpcb ipxpcb;
struct ipxpcb ipxrawpcb;
/*
* IPX protocol control block (pcb) lists.
*/
struct ipxpcbhead ipxpcb_list;
struct ipxpcbhead ipxrawpcb_list;
static int ipxqmaxlen = IFQ_MAXLEN;
static struct ifqueue ipxintrq;
@ -106,8 +110,9 @@ ipx_init()
{
read_random(&ipx_pexseq, sizeof ipx_pexseq);
ipxpcb.ipxp_next = ipxpcb.ipxp_prev = &ipxpcb;
ipxrawpcb.ipxp_next = ipxrawpcb.ipxp_prev = &ipxrawpcb;
LIST_INIT(&ipxpcb_list);
LIST_INIT(&ipxrawpcb_list);
ipx_netmask.sipx_len = 6;
ipx_netmask.sipx_addr.x_net = ipx_broadnet;
@ -152,8 +157,7 @@ ipxintr(struct mbuf *m)
/*
* Give any raw listeners a crack at the packet
*/
for (ipxp = ipxrawpcb.ipxp_next; ipxp != &ipxrawpcb;
ipxp = ipxp->ipxp_next) {
LIST_FOREACH(ipxp, &ipxrawpcb_list, ipxp_list) {
struct mbuf *m1 = m_copy(m, 0, (int)M_COPYALL);
if (m1 != NULL)
ipx_input(m1, ipxp);
@ -466,8 +470,7 @@ struct ifnet *ifp;
/*
* Give any raw listeners a crack at the packet
*/
for (ipxp = ipxrawpcb.ipxp_next; ipxp != &ipxrawpcb;
ipxp = ipxp->ipxp_next) {
LIST_FOREACH(ipxp, &ipxrawpcb_list, ipxp_list) {
struct mbuf *m0 = m_copy(m, 0, (int)M_COPYALL);
if (m0 != NULL) {
register struct ipx *ipx;

9
sys/netipx/ipx_pcb.c
View File

@ -1,4 +1,5 @@
/*
* Copyright (c) 2004, Robert N. M. Watson
* Copyright (c) 1995, Mike Mitchell
* Copyright (c) 1984, 1985, 1986, 1987, 1993
* The Regents of the University of California. All rights reserved.
@ -56,7 +57,7 @@ static struct ipx_addr zeroipx_addr;
int
ipx_pcballoc(so, head, td)
struct socket *so;
struct ipxpcb *head;
struct ipxpcbhead *head;
struct thread *td;
{
register struct ipxpcb *ipxp;
@ -67,7 +68,7 @@ ipx_pcballoc(so, head, td)
ipxp->ipxp_socket = so;
if (ipxcksum)
ipxp->ipxp_flags |= IPXP_CHECKSUM;
insque(ipxp, head);
LIST_INSERT_HEAD(head, ipxp, ipxp_list);
so->so_pcb = (caddr_t)ipxp;
return (0);
}
@ -274,7 +275,7 @@ ipx_pcbdetach(ipxp)
sotryfree(so);
if (ipxp->ipxp_route.ro_rt != NULL)
rtfree(ipxp->ipxp_route.ro_rt);
remque(ipxp);
LIST_REMOVE(ipxp, ipxp_list);
FREE(ipxp, M_PCB);
}
@ -319,7 +320,7 @@ ipx_pcblookup(faddr, lport, wildp)
u_short fport;
fport = faddr->x_port;
for (ipxp = (&ipxpcb)->ipxp_next; ipxp != (&ipxpcb); ipxp = ipxp->ipxp_next) {
LIST_FOREACH(ipxp, &ipxpcb_list, ipxp_list) {
if (ipxp->ipxp_lport != lport)
continue;
wildcard = 0;

14
sys/netipx/ipx_pcb.h
View File

@ -1,4 +1,5 @@
/*
* Copyright (c) 2004, Robert N. M. Watson
* Copyright (c) 1995, Mike Mitchell
* Copyright (c) 1984, 1985, 1986, 1987, 1993
* The Regents of the University of California. All rights reserved.
@ -43,9 +44,7 @@
* IPX protocol interface control block.
*/
struct ipxpcb {
struct ipxpcb *ipxp_next; /* doubly linked list */
struct ipxpcb *ipxp_prev;
struct ipxpcb *ipxp_head;
LIST_ENTRY(ipxpcb) ipxp_list;
struct socket *ipxp_socket; /* back pointer to socket */
struct ipx_addr ipxp_faddr; /* destination address */
struct ipx_addr ipxp_laddr; /* socket's address */
@ -57,6 +56,13 @@ struct ipxpcb {
u_char ipxp_rpt; /* last received packet type by ipx_input() */
};
/*
* Additional IPX pcb-related types and variables.
*/
LIST_HEAD(ipxpcbhead, ipxpcb);
extern struct ipxpcbhead ipxpcb_list;
extern struct ipxpcbhead ipxrawpcb_list;
/* possible flags */
#define IPXP_IN_ABORT 0x1 /* calling abort through socket */
@ -81,7 +87,7 @@ struct ipxpcb {
#ifdef _KERNEL
extern struct ipxpcb ipxpcb; /* head of list */
int ipx_pcballoc(struct socket *so, struct ipxpcb *head,
int ipx_pcballoc(struct socket *so, struct ipxpcbhead *head,
struct thread *p);
int ipx_pcbbind(struct ipxpcb *ipxp, struct sockaddr *nam,
struct thread *p);

5
sys/netipx/ipx_usrreq.c
View File

@ -1,4 +1,5 @@
/*
* Copyright (c) 2004, Robert N. M. Watson
* Copyright (c) 1995, Mike Mitchell
* Copyright (c) 1984, 1985, 1986, 1987, 1993
* The Regents of the University of California. All rights reserved.
@ -455,7 +456,7 @@ ipx_attach(so, proto, td)
if (ipxp != NULL)
return (EINVAL);
s = splnet();
error = ipx_pcballoc(so, &ipxpcb, td);
error = ipx_pcballoc(so, &ipxpcb_list, td);
splx(s);
if (error == 0)
error = soreserve(so, ipxsendspace, ipxrecvspace);
@ -616,7 +617,7 @@ ripx_attach(so, proto, td)
if (td != NULL && (error = suser(td)) != 0)
return (error);
s = splnet();
error = ipx_pcballoc(so, &ipxrawpcb, td);
error = ipx_pcballoc(so, &ipxrawpcb_list, td);
splx(s);
if (error)
return (error);

1
sys/netipx/ipx_var.h
View File

@ -66,7 +66,6 @@ SYSCTL_DECL(_net_ipx_ipx);
extern int ipxcksum;
extern long ipx_pexseq;
extern struct ipxstat ipxstat;
extern struct ipxpcb ipxrawpcb;
extern struct pr_usrreqs ipx_usrreqs;
extern struct pr_usrreqs ripx_usrreqs;
extern struct sockaddr_ipx ipx_netmask;

35
sys/netipx/spx_usrreq.c
View File

@ -1,4 +1,5 @@
/*
* Copyright (c) 2004, Robert N. M. Watson
* Copyright (c) 1995, Mike Mitchell
* Copyright (c) 1984, 1985, 1986, 1987, 1993
* The Regents of the University of California. All rights reserved.
@ -1310,7 +1311,7 @@ spx_attach(so, proto, td)
if (ipxp != NULL)
return (EISCONN);
s = splnet();
error = ipx_pcballoc(so, &ipxpcb, td);
error = ipx_pcballoc(so, &ipxpcb_list, td);
if (error)
goto spx_attach_end;
if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
@ -1731,9 +1732,7 @@ spx_fasttimo()
register struct spxpcb *cb;
int s = splnet();
ipxp = ipxpcb.ipxp_next;
if (ipxp != NULL)
for (; ipxp != &ipxpcb; ipxp = ipxp->ipxp_next)
LIST_FOREACH(ipxp, &ipxpcb_list, ipxp_list) {
if ((cb = (struct spxpcb *)ipxp->ipxp_pcb) != NULL &&
(cb->s_flags & SF_DELACK)) {
cb->s_flags &= ~SF_DELACK;
@ -1741,6 +1740,8 @@ spx_fasttimo()
spxstat.spxs_delack++;
spx_output(cb, (struct mbuf *)NULL);
}
}
splx(s);
}
@ -1752,36 +1753,32 @@ spx_fasttimo()
void
spx_slowtimo()
{
register struct ipxpcb *ip, *ipnxt;
register struct ipxpcb *ip, *ip_temp;
register struct spxpcb *cb;
int s = splnet();
register int i;
/*
* Search through tcb's and update active timers.
* Search through tcb's and update active timers. Note that timers
* may free the ipxpcb, so be sure to handle that case.
*/
ip = ipxpcb.ipxp_next;
if (ip == NULL) {
splx(s);
return;
}
while (ip != &ipxpcb) {
LIST_FOREACH_SAFE(ip, &ipxpcb_list, ipxp_list, ip_temp) {
cb = ipxtospxpcb(ip);
ipnxt = ip->ipxp_next;
if (cb == NULL)
goto tpgone;
continue;
for (i = 0; i < SPXT_NTIMERS; i++) {
if (cb->s_timer[i] && --cb->s_timer[i] == 0) {
spx_timers(cb, i);
if (ipnxt->ipxp_prev != ip)
goto tpgone;
/*
* spx_timers() returns (NULL) if it free'd
* the pcb.
*/
if (spx_timers(cb, i) == NULL)
continue;
}
}
cb->s_idle++;
if (cb->s_rtt)
cb->s_rtt++;
tpgone:
ip = ipnxt;
}
spx_iss += SPX_ISSINCR/PR_SLOWHZ; /* increment iss */
splx(s);