[hurd] 06/23: pfinet: convert to trivfs dynamic classes and buckets

[Samuel Thibault]

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sthibault pushed a commit to branch upstream
in repository hurd.

commit f42c29d2172e953887542bf7fb31d2b739563887
Author: Justus Winter <address@hidden>
Date:   Sun Sep 27 18:50:11 2015 +0200

    pfinet: convert to trivfs dynamic classes and buckets
    
    libtrivfs contains two ways of managing more than one port class and
    bucket.  There is the old way of using a statically allocated array
    with explicit length, and the new way with dynamically allocated
    vectors.
    
    Converting all users to the new way of handling multiple classes
    and/or buckets, we can simplify the code in libtrivfs.  In many cases,
    the code will be simpler and more expressive for the user.
    
    This also fixes a mild bug.  The classes and buckets given to
    `trivfs_startup' end up in the dynamic vectors too, making the object
    lookup code use the more complicated code path.
    
    * pfinet/main.c: Convert to dynamic classes and buckets.
    * pfinet/options.c: Likewise.
    * pfinet/pfinet.h: Likewise.
    * pfinet/socket-ops.c: Likewise.
---
 pfinet/main.c       | 61 +++++++++++++++++++++++++++++------------------------
 pfinet/options.c    |  8 +++----
 pfinet/pfinet.h     |  7 ++----
 pfinet/socket-ops.c |  2 +-
 4 files changed, 41 insertions(+), 37 deletions(-)

diff --git a/pfinet/main.c b/pfinet/main.c
index 8716fdb..46457a9 100644
--- a/pfinet/main.c
+++ b/pfinet/main.c
@@ -56,11 +56,9 @@ int trivfs_support_write = 1;
 int trivfs_support_exec = 0;
 int trivfs_allow_open = O_READ | O_WRITE;
 
-struct port_class *trivfs_protid_portclasses[2];
-int trivfs_protid_nportclasses = 2;
-
-struct port_class *trivfs_cntl_portclasses[2];
-int trivfs_cntl_nportclasses = 2;
+/* We have a class each per portclass.  */
+struct port_class *pfinet_protid_portclasses[2];
+struct port_class *pfinet_cntl_portclasses[2];
 
 /* Which portclass to install on the bootstrap port, default to IPv4. */
 int pfinet_bootstrap_portclass = PORTCLASS_INET;
@@ -334,7 +332,7 @@ main (int argc,
 
   if (bootstrap != MACH_PORT_NULL) {
     /* Create portclass to install on the bootstrap port. */
-    if(trivfs_protid_portclasses[pfinet_bootstrap_portclass]
+    if(pfinet_protid_portclasses[pfinet_bootstrap_portclass]
        != MACH_PORT_NULL)
       error(1, 0, "No portclass left to assign to bootstrap port");
 
@@ -342,17 +340,23 @@ main (int argc,
     if (pfinet_bootstrap_portclass == PORTCLASS_INET6)
       pfinet_activate_ipv6 ();
 #endif
-    
-    trivfs_protid_portclasses[pfinet_bootstrap_portclass] =
-      ports_create_class (trivfs_clean_protid, 0);
-    trivfs_cntl_portclasses[pfinet_bootstrap_portclass] =
-      ports_create_class (trivfs_clean_cntl, 0);
+
+    err = trivfs_add_protid_port_class (
+       &pfinet_protid_portclasses[pfinet_bootstrap_portclass]);
+    if (err)
+      error (1, 0, "error creating control port class");
+
+    err = trivfs_add_control_port_class (
+       &pfinet_cntl_portclasses[pfinet_bootstrap_portclass]);
+    if (err)
+      error (1, 0, "error creating control port class");
 
     /* Talk to parent and link us in.  */
     err = trivfs_startup (bootstrap, 0,
-                         trivfs_cntl_portclasses[pfinet_bootstrap_portclass],
-                         pfinet_bucket, trivfs_protid_portclasses
-                         [pfinet_bootstrap_portclass], pfinet_bucket, 
+                         pfinet_cntl_portclasses[pfinet_bootstrap_portclass],
+                         pfinet_bucket,
+                          
pfinet_protid_portclasses[pfinet_bootstrap_portclass],
+                          pfinet_bucket,
                          &pfinetctl);
 
     if (err)
@@ -371,7 +375,7 @@ main (int argc,
     /* Check that at least one portclass has been bound, 
        error out otherwise. */
     for (i = 0; i < trivfs_protid_nportclasses; i ++)
-      if (trivfs_protid_portclasses[i] != MACH_PORT_NULL)
+      if (pfinet_protid_portclasses[i] != MACH_PORT_NULL)
        break;
 
     if (i == trivfs_protid_nportclasses)
@@ -424,22 +428,25 @@ pfinet_bind (int portclass, const char *name)
     err = errno;
 
   if (! err) {
-    if (trivfs_protid_portclasses[portclass] != MACH_PORT_NULL)
+    if (pfinet_protid_portclasses[portclass] != MACH_PORT_NULL)
       error (1, 0, "Cannot bind one protocol to multiple nodes.\n");
 
 #ifdef CONFIG_IPV6
     if (portclass == PORTCLASS_INET6)
       pfinet_activate_ipv6 ();
 #endif
+    //mark
+    err = trivfs_add_protid_port_class (&pfinet_protid_portclasses[portclass]);
+    if (err)
+      error (1, 0, "error creating control port class");
 
-    trivfs_protid_portclasses[portclass] =
-      ports_create_class (trivfs_clean_protid, 0);
-    trivfs_cntl_portclasses[portclass] =
-      ports_create_class (trivfs_clean_cntl, 0);
+    err = trivfs_add_control_port_class (&pfinet_cntl_portclasses[portclass]);
+    if (err)
+      error (1, 0, "error creating control port class");
 
-    err = trivfs_create_control (file, trivfs_cntl_portclasses[portclass],
-                                pfinet_bucket, 
-                                trivfs_protid_portclasses[portclass], 
+    err = trivfs_create_control (file, pfinet_cntl_portclasses[portclass],
+                                pfinet_bucket,
+                                pfinet_protid_portclasses[portclass],
                                 pfinet_bucket, &cntl);
   }
 
@@ -473,16 +480,16 @@ trivfs_goaway (struct trivfs_control *cntl, int flags)
   else
     {
       /* Stop new requests.  */
-      ports_inhibit_class_rpcs (trivfs_cntl_portclasses[0]);
-      ports_inhibit_class_rpcs (trivfs_protid_portclasses[0]);
+      ports_inhibit_class_rpcs (pfinet_cntl_portclasses[0]);
+      ports_inhibit_class_rpcs (pfinet_protid_portclasses[0]);
       ports_inhibit_class_rpcs (socketport_class);
 
       if (ports_count_class (socketport_class) != 0)
        {
          /* We won't go away, so start things going again...  */
          ports_enable_class (socketport_class);
-         ports_resume_class_rpcs (trivfs_cntl_portclasses[0]);
-         ports_resume_class_rpcs (trivfs_protid_portclasses[0]);
+         ports_resume_class_rpcs (pfinet_cntl_portclasses[0]);
+         ports_resume_class_rpcs (pfinet_protid_portclasses[0]);
 
          return EBUSY;
        }
diff --git a/pfinet/options.c b/pfinet/options.c
index daffcd5..ae44759 100644
--- a/pfinet/options.c
+++ b/pfinet/options.c
@@ -133,7 +133,7 @@ parse_interface_copy_device(struct device *src,
       && FIB_RES_GW(res) != INADDR_ANY)
     dst->gateway = FIB_RES_GW (res);
 #ifdef CONFIG_IPV6
-  if (trivfs_protid_portclasses[PORTCLASS_INET6] != MACH_PORT_NULL)
+  if (pfinet_protid_portclasses[PORTCLASS_INET6] != MACH_PORT_NULL)
     idev = ipv6_find_idev(src);
 
   if (idev)
@@ -452,7 +452,7 @@ parse_opt (int opt, char *arg, struct argp_state *state)
        {
 #ifdef CONFIG_IPV6
          struct inet6_dev *idev = NULL;
-         if (trivfs_protid_portclasses[PORTCLASS_INET6] != MACH_PORT_NULL
+         if (pfinet_protid_portclasses[PORTCLASS_INET6] != MACH_PORT_NULL
              && in->device)
            idev = ipv6_find_idev(in->device);
 #endif
@@ -570,7 +570,7 @@ parse_opt (int opt, char *arg, struct argp_state *state)
 
       /* Set IPv6 default router. */
 #ifdef CONFIG_IPV6
-      if (trivfs_protid_portclasses[PORTCLASS_INET6] != MACH_PORT_NULL)
+      if (pfinet_protid_portclasses[PORTCLASS_INET6] != MACH_PORT_NULL)
        {
          struct rt6_info *rt6i = ipv6_get_dflt_router ();
 
@@ -710,7 +710,7 @@ trivfs_append_args (struct trivfs_control *fsys, char 
**argz, size_t *argz_len)
 #ifdef CONFIG_IPV6
       struct inet6_dev *idev = NULL;
 
-      if (trivfs_protid_portclasses[PORTCLASS_INET6] != MACH_PORT_NULL)
+      if (pfinet_protid_portclasses[PORTCLASS_INET6] != MACH_PORT_NULL)
        idev = ipv6_find_idev(dev);
 
       if (idev)
diff --git a/pfinet/pfinet.h b/pfinet/pfinet.h
index 46aa97b..6e59225 100644
--- a/pfinet/pfinet.h
+++ b/pfinet/pfinet.h
@@ -92,11 +92,8 @@ enum {
   PORTCLASS_INET6,
 };
 
-extern struct port_class *trivfs_protid_portclasses[];
-extern int trivfs_protid_nportclasses;
-
-extern struct port_class *trivfs_cntl_portclasses[2];
-extern int trivfs_cntl_nportclasses;
+extern struct port_class *pfinet_protid_portclasses[2];
+extern struct port_class *pfinet_cntl_portclasses[2];
 
 /* Which portclass to install on the bootstrap port. */
 extern int pfinet_bootstrap_portclass;
diff --git a/pfinet/socket-ops.c b/pfinet/socket-ops.c
index 3f8b7fb..14b3120 100644
--- a/pfinet/socket-ops.c
+++ b/pfinet/socket-ops.c
@@ -82,7 +82,7 @@ S_socket_create (struct trivfs_protid *master,
        isroot = 1;
     }
 
-  if (master->pi.class == trivfs_protid_portclasses[PORTCLASS_INET])
+  if (master->pi.class == pfinet_protid_portclasses[PORTCLASS_INET])
     err = - (*net_families[PF_INET]->create) (sock, protocol);
   else
     err = - (*net_families[PF_INET6]->create) (sock, protocol);

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