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[src/trunk]: src/sys Introduce in6_selecthlim_rt to consolidate an idiom for ...



details:   https://anonhg.NetBSD.org/src/rev/c2df1bc25219
branches:  trunk
changeset: 337771:c2df1bc25219
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Mon Apr 27 02:59:44 2015 +0000

description:
Introduce in6_selecthlim_rt to consolidate an idiom for rt->rt_ifp

It consolidates a scattered routine:
(rt = rtcache_validate(&in6p->in6p_route)) != NULL ? rt->rt_ifp : NULL

diffstat:

 sys/netinet/dccp_usrreq.c  |  11 +++--------
 sys/netinet/tcp_input.c    |   8 +++-----
 sys/netinet/tcp_output.c   |   8 +++-----
 sys/netinet/tcp_subr.c     |  25 ++++++-------------------
 sys/netinet6/in6_pcb.c     |  12 ++++++------
 sys/netinet6/in6_pcb.h     |   3 ++-
 sys/netinet6/in6_src.c     |  19 +++++++++++++++++--
 sys/netinet6/udp6_output.c |  10 +++-------
 8 files changed, 43 insertions(+), 53 deletions(-)

diffs (truncated from 322 to 300 lines):

diff -r c76e0dc1d2c3 -r c2df1bc25219 sys/netinet/dccp_usrreq.c
--- a/sys/netinet/dccp_usrreq.c Mon Apr 27 00:33:46 2015 +0000
+++ b/sys/netinet/dccp_usrreq.c Mon Apr 27 02:59:44 2015 +0000
@@ -1,5 +1,5 @@
 /*     $KAME: dccp_usrreq.c,v 1.67 2005/11/03 16:05:04 nishida Exp $   */
-/*     $NetBSD: dccp_usrreq.c,v 1.4 2015/04/26 21:40:49 rtr Exp $ */
+/*     $NetBSD: dccp_usrreq.c,v 1.5 2015/04/27 02:59:44 ozaki-r Exp $ */
 
 /*
  * Copyright (c) 2003 Joacim Häggmark, Magnus Erixzon, Nils-Erik Mattsson 
@@ -67,7 +67,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: dccp_usrreq.c,v 1.4 2015/04/26 21:40:49 rtr Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dccp_usrreq.c,v 1.5 2015/04/27 02:59:44 ozaki-r Exp $");
 
 #include "opt_inet.h"
 #include "opt_dccp.h"
@@ -91,7 +91,6 @@
 #include <sys/queue.h>
 
 #include <net/if.h>
-#include <net/route.h>
 
 #include <netinet/in.h>
 #include <netinet/in_systm.h>
@@ -2308,9 +2307,6 @@
        struct inpcb *inp;
        struct in6pcb *in6p;
        struct dccpcb   *dp;
-#ifdef INET6
-       struct rtentry *rt;
-#endif
 
        DCCP_DEBUG((LOG_INFO, "Creating a new dccpcb!\n"));
 
@@ -2362,8 +2358,7 @@
        case PF_INET6:
                in6p = (struct in6pcb *)aux;
                dp->d_in6pcb = in6p;
-               rt = rtcache_validate(&in6p->in6p_route);
-               in6p->in6p_ip6.ip6_hlim = in6_selecthlim(in6p, (rt != NULL) ? rt->rt_ifp : NULL);
+               in6p->in6p_ip6.ip6_hlim = in6_selecthlim_rt(in6p);
                in6p->in6p_ppcb = dp;
                break;
        }
diff -r c76e0dc1d2c3 -r c2df1bc25219 sys/netinet/tcp_input.c
--- a/sys/netinet/tcp_input.c   Mon Apr 27 00:33:46 2015 +0000
+++ b/sys/netinet/tcp_input.c   Mon Apr 27 02:59:44 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tcp_input.c,v 1.337 2015/03/14 02:08:16 rtr Exp $      */
+/*     $NetBSD: tcp_input.c,v 1.338 2015/04/27 02:59:44 ozaki-r Exp $  */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -148,7 +148,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tcp_input.c,v 1.337 2015/03/14 02:08:16 rtr Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tcp_input.c,v 1.338 2015/04/27 02:59:44 ozaki-r Exp $");
 
 #include "opt_inet.h"
 #include "opt_ipsec.h"
@@ -174,7 +174,6 @@
 #include <sys/cprng.h>
 
 #include <net/if.h>
-#include <net/route.h>
 #include <net/if_types.h>
 
 #include <netinet/in.h>
@@ -4797,8 +4796,7 @@
 #ifdef INET6
        case AF_INET6:
                ip6->ip6_hlim = in6_selecthlim(NULL,
-                               (rt = rtcache_validate(ro)) != NULL ? rt->rt_ifp
-                                                                   : NULL);
+                   (rt = rtcache_validate(ro)) != NULL ? rt->rt_ifp : NULL);
 
                error = ip6_output(m, NULL /*XXX*/, ro, 0, NULL, so, NULL);
                break;
diff -r c76e0dc1d2c3 -r c2df1bc25219 sys/netinet/tcp_output.c
--- a/sys/netinet/tcp_output.c  Mon Apr 27 00:33:46 2015 +0000
+++ b/sys/netinet/tcp_output.c  Mon Apr 27 02:59:44 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tcp_output.c,v 1.180 2015/02/14 12:57:53 he Exp $      */
+/*     $NetBSD: tcp_output.c,v 1.181 2015/04/27 02:59:44 ozaki-r Exp $ */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -135,7 +135,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tcp_output.c,v 1.180 2015/02/14 12:57:53 he Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tcp_output.c,v 1.181 2015/04/27 02:59:44 ozaki-r Exp $");
 
 #include "opt_inet.h"
 #include "opt_ipsec.h"
@@ -1579,9 +1579,7 @@
                         * setsockopt. Also, desired default hop limit might
                         * be changed via Neighbor Discovery.
                         */
-                       ip6->ip6_hlim = in6_selecthlim(tp->t_in6pcb,
-                               (rt = rtcache_validate(ro)) != NULL ? rt->rt_ifp
-                                                                   : NULL);
+                       ip6->ip6_hlim = in6_selecthlim_rt(tp->t_in6pcb);
                }
                ip6->ip6_flow |= htonl(ecn_tos << 20);
                /* ip6->ip6_flow = ??? (from template) */
diff -r c76e0dc1d2c3 -r c2df1bc25219 sys/netinet/tcp_subr.c
--- a/sys/netinet/tcp_subr.c    Mon Apr 27 00:33:46 2015 +0000
+++ b/sys/netinet/tcp_subr.c    Mon Apr 27 02:59:44 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tcp_subr.c,v 1.259 2015/04/13 15:51:00 riastradh Exp $ */
+/*     $NetBSD: tcp_subr.c,v 1.260 2015/04/27 02:59:44 ozaki-r Exp $   */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -91,7 +91,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tcp_subr.c,v 1.259 2015/04/13 15:51:00 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tcp_subr.c,v 1.260 2015/04/27 02:59:44 ozaki-r Exp $");
 
 #include "opt_inet.h"
 #include "opt_ipsec.h"
@@ -637,9 +637,6 @@
 tcp_respond(struct tcpcb *tp, struct mbuf *mtemplate, struct mbuf *m,
     struct tcphdr *th0, tcp_seq ack, tcp_seq seq, int flags)
 {
-#ifdef INET6
-       struct rtentry *rt;
-#endif
        struct route *ro;
        int error, tlen, win = 0;
        int hlen;
@@ -878,13 +875,9 @@
                th->th_sum = in6_cksum(m, IPPROTO_TCP, sizeof(struct ip6_hdr),
                                tlen);
                ip6->ip6_plen = htons(tlen);
-               if (tp && tp->t_in6pcb) {
-                       struct ifnet *oifp;
-                       ro = &tp->t_in6pcb->in6p_route;
-                       oifp = (rt = rtcache_validate(ro)) != NULL ? rt->rt_ifp
-                                                                  : NULL;
-                       ip6->ip6_hlim = in6_selecthlim(tp->t_in6pcb, oifp);
-               } else
+               if (tp && tp->t_in6pcb)
+                       ip6->ip6_hlim = in6_selecthlim_rt(tp->t_in6pcb);
+               else
                        ip6->ip6_hlim = ip6_defhlim;
                ip6->ip6_flow &= ~IPV6_FLOWINFO_MASK;
                if (ip6_auto_flowlabel) {
@@ -1035,9 +1028,6 @@
 struct tcpcb *
 tcp_newtcpcb(int family, void *aux)
 {
-#ifdef INET6
-       struct rtentry *rt;
-#endif
        struct tcpcb *tp;
        int i;
 
@@ -1076,10 +1066,7 @@
            {
                struct in6pcb *in6p = (struct in6pcb *)aux;
 
-               in6p->in6p_ip6.ip6_hlim = in6_selecthlim(in6p,
-                       (rt = rtcache_validate(&in6p->in6p_route)) != NULL
-                           ? rt->rt_ifp
-                           : NULL);
+               in6p->in6p_ip6.ip6_hlim = in6_selecthlim_rt(in6p);
                in6p->in6p_ppcb = (void *)tp;
 
                tp->t_in6pcb = in6p;
diff -r c76e0dc1d2c3 -r c2df1bc25219 sys/netinet6/in6_pcb.c
--- a/sys/netinet6/in6_pcb.c    Mon Apr 27 00:33:46 2015 +0000
+++ b/sys/netinet6/in6_pcb.c    Mon Apr 27 02:59:44 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: in6_pcb.c,v 1.137 2015/04/26 16:45:50 rtr Exp $        */
+/*     $NetBSD: in6_pcb.c,v 1.138 2015/04/27 02:59:44 ozaki-r Exp $    */
 /*     $KAME: in6_pcb.c,v 1.84 2001/02/08 18:02:08 itojun Exp $        */
 
 /*
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: in6_pcb.c,v 1.137 2015/04/26 16:45:50 rtr Exp $");
+__KERNEL_RCSID(0, "$NetBSD: in6_pcb.c,v 1.138 2015/04/27 02:59:44 ozaki-r Exp $");
 
 #include "opt_inet.h"
 #include "opt_ipsec.h"
@@ -426,7 +426,6 @@
 int
 in6_pcbconnect(void *v, struct mbuf *nam, struct lwp *l)
 {
-       struct rtentry *rt;
        struct in6pcb *in6p = v;
        struct in6_addr *in6a = NULL;
        struct sockaddr_in6 *sin6 = mtod(nam, struct sockaddr_in6 *);
@@ -526,10 +525,11 @@
                        return (error);
                }
        }
-       if (ifp == NULL && (rt = rtcache_validate(&in6p->in6p_route)) != NULL)
-               ifp = rt->rt_ifp;
 
-       in6p->in6p_ip6.ip6_hlim = (u_int8_t)in6_selecthlim(in6p, ifp);
+       if (ifp != NULL)
+               in6p->in6p_ip6.ip6_hlim = (u_int8_t)in6_selecthlim(in6p, ifp);
+       else
+               in6p->in6p_ip6.ip6_hlim = (u_int8_t)in6_selecthlim_rt(in6p);
 
        if (in6_pcblookup_connect(in6p->in6p_table, &sin6->sin6_addr,
            sin6->sin6_port,
diff -r c76e0dc1d2c3 -r c2df1bc25219 sys/netinet6/in6_pcb.h
--- a/sys/netinet6/in6_pcb.h    Mon Apr 27 00:33:46 2015 +0000
+++ b/sys/netinet6/in6_pcb.h    Mon Apr 27 02:59:44 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: in6_pcb.h,v 1.43 2015/04/24 22:32:37 rtr Exp $ */
+/*     $NetBSD: in6_pcb.h,v 1.44 2015/04/27 02:59:44 ozaki-r Exp $     */
 /*     $KAME: in6_pcb.h,v 1.45 2001/02/09 05:59:46 itojun Exp $        */
 
 /*
@@ -174,6 +174,7 @@
 
 /* in in6_src.c */
 int    in6_selecthlim(struct in6pcb *, struct ifnet *);
+int    in6_selecthlim_rt(struct in6pcb *);
 int    in6_pcbsetport(struct sockaddr_in6 *, struct in6pcb *, struct lwp *);
 
 extern struct rtentry *
diff -r c76e0dc1d2c3 -r c2df1bc25219 sys/netinet6/in6_src.c
--- a/sys/netinet6/in6_src.c    Mon Apr 27 00:33:46 2015 +0000
+++ b/sys/netinet6/in6_src.c    Mon Apr 27 02:59:44 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: in6_src.c,v 1.56 2015/01/20 21:27:36 roy Exp $ */
+/*     $NetBSD: in6_src.c,v 1.57 2015/04/27 02:59:44 ozaki-r Exp $     */
 /*     $KAME: in6_src.c,v 1.159 2005/10/19 01:40:32 t-momose Exp $     */
 
 /*
@@ -66,7 +66,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: in6_src.c,v 1.56 2015/01/20 21:27:36 roy Exp $");
+__KERNEL_RCSID(0, "$NetBSD: in6_src.c,v 1.57 2015/04/27 02:59:44 ozaki-r Exp $");
 
 #include "opt_inet.h"
 
@@ -788,6 +788,21 @@
                return (ip6_defhlim);
 }
 
+int
+in6_selecthlim_rt(struct in6pcb *in6p)
+{
+       struct rtentry *rt;
+
+       if (in6p == NULL)
+               return in6_selecthlim(in6p, NULL);
+
+       rt = rtcache_validate(&in6p->in6p_route);
+       if (rt != NULL)
+               return in6_selecthlim(in6p, rt->rt_ifp);
+       else
+               return in6_selecthlim(in6p, NULL);
+}
+
 /*
  * Find an empty port and set it to the specified PCB.
  */
diff -r c76e0dc1d2c3 -r c2df1bc25219 sys/netinet6/udp6_output.c
--- a/sys/netinet6/udp6_output.c        Mon Apr 27 00:33:46 2015 +0000
+++ b/sys/netinet6/udp6_output.c        Mon Apr 27 02:59:44 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: udp6_output.c,v 1.47 2014/12/05 18:45:37 seanb Exp $   */
+/*     $NetBSD: udp6_output.c,v 1.48 2015/04/27 02:59:44 ozaki-r Exp $ */
 /*     $KAME: udp6_output.c,v 1.43 2001/10/15 09:19:52 itojun Exp $    */
 
 /*
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: udp6_output.c,v 1.47 2014/12/05 18:45:37 seanb Exp $");
+__KERNEL_RCSID(0, "$NetBSD: udp6_output.c,v 1.48 2015/04/27 02:59:44 ozaki-r Exp $");
 
 #include "opt_inet.h"
 
@@ -80,7 +80,6 @@
 #include <sys/domain.h>
 
 #include <net/if.h>
-#include <net/route.h>



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