> I don't see a problem with this except for a layering violation: the
> generic "netdev" layer now has a function and a function pointer in it
> that is specific to the dpif code. I can see two ways to deal with
> this: either move it out of the generic "netdev" layer into some other
> place, or to add conspicuous comments on ->get_dpif_port() and
> netdev_get_dpif_port() that explain the context and why this
> particular function might not make any sense (and you should just
> leave it NULL) if you're implementing something that isn't a
> dpif-based switch.
That's fair, I had went back and forth several times on which way was better,
but in the end I think you're right and it's better to pull it into the vport
layer. Below is a new version of the patch.
Also note that netdev_vport_get_dpif_port()'s implementation changes to the
following in the "lib: Switch to flow based tunneling." patch. I can resend
that if you'd like.
const char *
netdev_vport_get_dpif_port(const struct netdev *netdev)
{
const struct netdev_dev *dev = netdev_get_dev(netdev);
const struct netdev_class *class = netdev_dev_get_class(dev);
const char *dpif_port;
dpif_port = (is_vport_class(class)
? vport_class_cast(class)->dpif_port
: NULL);
return dpif_port ? dpif_port : netdev_get_name(netdev);
}
---
lib/dpif-linux.c | 4 ++--
lib/dpif-netdev.c | 18 ++++++++++--------
lib/netdev-vport.c | 6 ++++++
lib/netdev-vport.h | 2 ++
4 files changed, 20 insertions(+), 10 deletions(-)
diff --git a/lib/dpif-linux.c b/lib/dpif-linux.c
index 6863e08..3dc94c2 100644
--- a/lib/dpif-linux.c
+++ b/lib/dpif-linux.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -426,7 +426,7 @@ dpif_linux_port_add(struct dpif *dpif_, struct netdev
*netdev,
uint32_t *port_nop)
{
struct dpif_linux *dpif = dpif_linux_cast(dpif_);
- const char *name = netdev_get_name(netdev);
+ const char *name = netdev_vport_get_dpif_port(netdev);
const char *type = netdev_get_type(netdev);
struct dpif_linux_vport request, reply;
const struct ofpbuf *options;
diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c
index 2cf2265..038dfdc 100644
--- a/lib/dpif-netdev.c
+++ b/lib/dpif-netdev.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -40,6 +40,7 @@
#include "hmap.h"
#include "list.h"
#include "netdev.h"
+#include "netdev-vport.h"
#include "netlink.h"
#include "odp-util.h"
#include "ofp-print.h"
@@ -437,11 +438,11 @@ dpif_netdev_port_add(struct dpif *dpif, struct netdev
*netdev,
}
port_no = *port_nop;
} else {
- port_no = choose_port(dp, netdev_get_name(netdev));
+ port_no = choose_port(dp, netdev_vport_get_dpif_port(netdev));
}
if (port_no >= 0) {
*port_nop = port_no;
- return do_add_port(dp, netdev_get_name(netdev),
+ return do_add_port(dp, netdev_vport_get_dpif_port(netdev),
netdev_get_type(netdev), port_no);
}
return EFBIG;
@@ -480,7 +481,7 @@ get_port_by_name(struct dp_netdev *dp,
struct dp_netdev_port *port;
LIST_FOR_EACH (port, node, &dp->port_list) {
- if (!strcmp(netdev_get_name(port->netdev), devname)) {
+ if (!strcmp(netdev_vport_get_dpif_port(port->netdev), devname)) {
*portp = port;
return 0;
}
@@ -504,7 +505,7 @@ do_del_port(struct dp_netdev *dp, uint32_t port_no)
dp->ports[port->port_no] = NULL;
dp->serial++;
- name = xstrdup(netdev_get_name(port->netdev));
+ name = xstrdup(netdev_vport_get_dpif_port(port->netdev));
netdev_close(port->netdev);
free(port->type);
@@ -518,7 +519,7 @@ static void
answer_port_query(const struct dp_netdev_port *port,
struct dpif_port *dpif_port)
{
- dpif_port->name = xstrdup(netdev_get_name(port->netdev));
+ dpif_port->name = xstrdup(netdev_vport_get_dpif_port(port->netdev));
dpif_port->type = xstrdup(port->type);
dpif_port->port_no = port->port_no;
}
@@ -609,7 +610,7 @@ dpif_netdev_port_dump_next(const struct dpif *dpif, void
*state_,
struct dp_netdev_port *port = dp->ports[port_no];
if (port) {
free(state->name);
- state->name = xstrdup(netdev_get_name(port->netdev));
+ state->name = xstrdup(netdev_vport_get_dpif_port(port->netdev));
dpif_port->name = state->name;
dpif_port->type = port->type;
dpif_port->port_no = port->port_no;
@@ -1068,7 +1069,8 @@ dpif_netdev_run(struct dpif *dpif)
} else if (error != EAGAIN && error != EOPNOTSUPP) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
VLOG_ERR_RL(&rl, "error receiving data from %s: %s",
- netdev_get_name(port->netdev), strerror(error));
+ netdev_vport_get_dpif_port(port->netdev),
+ strerror(error));
}
}
ofpbuf_uninit(&packet);
diff --git a/lib/netdev-vport.c b/lib/netdev-vport.c
index 94f1110..95cffd2 100644
--- a/lib/netdev-vport.c
+++ b/lib/netdev-vport.c
@@ -151,6 +151,12 @@ netdev_vport_is_patch(const struct netdev *netdev)
return class->get_config == get_patch_config;
}
+const char *
+netdev_vport_get_dpif_port(const struct netdev *netdev)
+{
+ return netdev_get_name(netdev);
+}
+
static uint32_t
get_u32_or_zero(const struct nlattr *a)
{
diff --git a/lib/netdev-vport.h b/lib/netdev-vport.h
index b372a74..8c81d7a 100644
--- a/lib/netdev-vport.h
+++ b/lib/netdev-vport.h
@@ -41,4 +41,6 @@ void netdev_vport_patch_inc_rx(const struct netdev *,
void netdev_vport_patch_inc_tx(const struct netdev *,
const struct dpif_flow_stats *);
+const char *netdev_vport_get_dpif_port(const struct netdev *);
+
#endif /* netdev-vport.h */
--
1.7.9.5
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