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dpif: Allow the port number to be requested when adding an interface.

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The datapath allows requesting a specific port number for a port, but
the dpif interface didn't expose it.  This commit adds that support.

Signed-off-by: Justin Pettit <jpettit@nicira.com>
This commit is contained in:
Justin Pettit
2012-07-27 23:58:24 -07:00
parent 8a77bb2ec8
commit 232dfa4aa3
5 changed files with 38 additions and 12 deletions
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18
lib/dpif.c
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@@ -410,19 +410,27 @@ dpif_get_dp_stats(const struct dpif *dpif, struct dpif_dp_stats *stats)
return error;
}
/* Attempts to add 'netdev' as a port on 'dpif'. If successful, returns 0 and
* sets '*port_nop' to the new port's port number (if 'port_nop' is non-null).
* On failure, returns a positive errno value and sets '*port_nop' to
* UINT16_MAX (if 'port_nop' is non-null). */
/* Attempts to add 'netdev' as a port on 'dpif'. If 'port_nop' is
* non-null and its value is not UINT16_MAX, then attempts to use the
* value as the port number.
*
* If successful, returns 0 and sets '*port_nop' to the new port's port
* number (if 'port_nop' is non-null). On failure, returns a positive
* errno value and sets '*port_nop' to UINT16_MAX (if 'port_nop' is
* non-null). */
int
dpif_port_add(struct dpif *dpif, struct netdev *netdev, uint16_t *port_nop)
{
const char *netdev_name = netdev_get_name(netdev);
uint16_t port_no;
uint16_t port_no = UINT16_MAX;
int error;
COVERAGE_INC(dpif_port_add);
if (port_nop) {
port_no = *port_nop;
}
error = dpif->dpif_class->port_add(dpif, netdev, &port_no);
if (!error) {
VLOG_DBG_RL(&dpmsg_rl, "%s: added %s as port %"PRIu16,