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dpif: Add dpif_port_get_name call

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Add ability to lookup a device name by its dpif port number.
This commit is contained in:
Justin Pettit
2009-08-29 16:02:56 -07:00
parent 13063c3b38
commit bd193a0aba
2 changed files with 24 additions and 0 deletions
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22
lib/dpif.c
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@@ -352,6 +352,28 @@ dpif_port_query_by_name(const struct dpif *dpif, const char *devname,
}
}
/* Looks up port number 'port_no' in 'dpif'. On success, returns 0 and copies
* the port's name into the 'name_size' bytes in 'name', ensuring that the
* result is null-terminated. On failure, returns a positive errno value and
* makes 'name' the empty string. */
int
dpif_port_get_name(struct dpif *dpif, uint16_t port_no,
char *name, size_t name_size)
{
struct odp_port port;
int error;
assert(name_size > 0);
error = dpif_port_query_by_number(dpif, port_no, &port);
if (!error) {
ovs_strlcpy(name, port.devname, name_size);
} else {
*name = '\0';
}
return error;
}
int
dpif_port_list(const struct dpif *dpif,
struct odp_port **ports, size_t *n_ports)

2
lib/dpif.h
View File

@@ -62,6 +62,8 @@ int dpif_port_query_by_number(const struct dpif *, uint16_t port_no,
struct odp_port *);
int dpif_port_query_by_name(const struct dpif *, const char *devname,
struct odp_port *);
int dpif_port_get_name(struct dpif *dpif, uint16_t port_no,
char *name, size_t name_size);
int dpif_port_list(const struct dpif *, struct odp_port **, size_t *n_ports);
int dpif_port_group_set(struct dpif *, uint16_t group,