polypath: Break out polypath_sendmsg_interf

No functional change.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/polypath.c b/polypath.c
index 859e3a5..d0c1400 100644 (file)
--- a/polypath.c
+++ b/polypath.c
@@ -452,6 +452,45 @@ static void polypath_afterpoll_monitor(void *state, struct pollfd *fds,
 }
 
 /* Actual udp packet sending work */
+
+static void polypath_sendmsg_interf(struct polypath *st,
+                                   struct interf *interf,
+                                   struct buffer_if *buf,
+                                   const struct comm_addr *dest,
+                                   bool_t *allreasonable)
+{
+    int i;
+    int af=dest->ia.sa.sa_family;
+    bool_t attempted=False, reasonable=False;
+
+    for (i=0; i<interf->socks.n_socks; i++) {
+       struct udpsock *us=&interf->socks.socks[i];
+       if (af != us->addr.sa.sa_family)
+           continue;
+       attempted=True;
+       int r=sendto(us->fd,buf->start,buf->size,
+                    0,&dest->ia.sa,iaddr_socklen(&dest->ia));
+       udp_sock_experienced(0,&st->uc,&interf->socks,us,
+                            &dest->ia,af, r,errno);
+       if (r>=0) {
+           reasonable=True;
+           break;
+       }
+       if (!(errno==EAFNOSUPPORT || errno==ENETUNREACH))
+           reasonable=True;
+       lg_perror(LG,M_DEBUG,errno,"%s [%s] xmit %"PRIu32" bytes to %s",
+                 interf->name,iaddr_to_string(&us->addr),
+                 buf->size,iaddr_to_string(&dest->ia));
+    }
+    if (!attempted)
+       if (!interf->experienced_xmit_noaf[af]++)
+           lg_perror(LG,M_WARNING,0,
+                     "%s has no suitable address to transmit %s",
+                     interf->name, af_name(af));
+
+    *allreasonable *= reasonable;
+}
+
 static bool_t polypath_sendmsg(void *commst, struct buffer_if *buf,
                          const struct comm_addr *dest,
                          struct comm_clientinfo *clientinfo)
@@ -459,36 +498,10 @@ static bool_t polypath_sendmsg(void *commst, struct buffer_if *buf,
     struct polypath *st=commst;
     struct interf *interf;
     bool_t allreasonable=True;
-    int af=dest->ia.sa.sa_family;
 
     LIST_FOREACH(interf,&st->interfs,entry) {
-       int i;
-       bool_t attempted=False, reasonable=False;
-       for (i=0; i<interf->socks.n_socks; i++) {
-           struct udpsock *us=&interf->socks.socks[i];
-           if (af != us->addr.sa.sa_family)
-               continue;
-           attempted=True;
-           int r=sendto(us->fd,buf->start,buf->size,
-                        0,&dest->ia.sa,iaddr_socklen(&dest->ia));
-           udp_sock_experienced(0,&st->uc,&interf->socks,us,
-                                &dest->ia,af, r,errno);
-           if (r>=0) {
-               reasonable=True;
-               break;
-           }
-           if (!(errno==EAFNOSUPPORT || errno==ENETUNREACH))
-               reasonable=True;
-           lg_perror(LG,M_DEBUG,errno,"%s [%s] xmit %"PRIu32" bytes to %s",
-                     interf->name,iaddr_to_string(&us->addr),
-                     buf->size,iaddr_to_string(&dest->ia));
-       }
-       if (!attempted)
-           if (!interf->experienced_xmit_noaf[af]++)
-               lg_perror(LG,M_WARNING,0,
-                         "%s has no suitable address to transmit %s",
-                         interf->name, af_name(af));
-       allreasonable *= reasonable;
+       polypath_sendmsg_interf(st,interf,buf,dest,
+                               &allreasonable);
     }
     return allreasonable;
 }