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rocker: Add support for phys name

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Add ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME to port settings. This attribute
exports the port name to the guest OS allowing it to name interfaces with
sensible defaults.

Mostly done by Scott for phys_id support; adapted to phys_name by David.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Message-id: 1433985681-56138-2-git-send-email-sfeldma@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
David Ahern 2015-06-10 18:21:18 -07:00 committed by Stefan Hajnoczi
parent f4d248bdc3
commit 773495364f
5 changed files with 31 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
docs/specs/rocker.txt
View File

@ -420,6 +420,7 @@ Other properties for front-panel ports are available via DMA CMD descriptors:
LEARNING 1 MAC address learning on port
1 = enabled
0 = disabled
PHYS_NAME <var> Physical port name (string)
Set PORT_SETTINGS descriptor:

23
hw/net/rocker/rocker.c
View File

@ -238,6 +238,7 @@ static int cmd_get_port_settings(Rocker *r,
uint8_t duplex;
uint8_t autoneg;
uint8_t learning;
char *phys_name;
MACAddr macaddr;
enum rocker_world_type mode;
size_t tlv_size;
@ -265,6 +266,7 @@ static int cmd_get_port_settings(Rocker *r,
fp_port_get_macaddr(fp_port, &macaddr);
mode = world_type(fp_port_get_world(fp_port));
learning = fp_port_get_learning(fp_port);
phys_name = fp_port_get_name(fp_port);
tlv_size = rocker_tlv_total_size(0) + /* nest */
rocker_tlv_total_size(sizeof(uint32_t)) + /* pport */
@ -273,7 +275,8 @@ static int cmd_get_port_settings(Rocker *r,
rocker_tlv_total_size(sizeof(uint8_t)) + /* autoneg */
rocker_tlv_total_size(sizeof(macaddr.a)) + /* macaddr */
rocker_tlv_total_size(sizeof(uint8_t)) + /* mode */
rocker_tlv_total_size(sizeof(uint8_t)); /* learning */
rocker_tlv_total_size(sizeof(uint8_t)) + /* learning */
rocker_tlv_total_size(strlen(phys_name));
if (tlv_size > desc_buf_size(info)) {
return -ROCKER_EMSGSIZE;
@ -290,6 +293,8 @@ static int cmd_get_port_settings(Rocker *r,
rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_MODE, mode);
rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
learning);
rocker_tlv_put(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME,
strlen(phys_name), phys_name);
rocker_tlv_nest_end(buf, &pos, nest);
return desc_set_buf(info, tlv_size);
@ -1277,6 +1282,22 @@ static int pci_rocker_init(PCIDevice *dev)
goto err_duplicate;
}
/* Rocker name is passed in port name requests to OS with the intention
* that the name is used in interface names. Limit the length of the
* rocker name to avoid naming problems in the OS. Also, adding the
* port number as p# and unganged breakout b#, where # is at most 2
* digits, so leave room for it too (-1 for string terminator, -3 for
* p# and -3 for b#)
*/
#define ROCKER_IFNAMSIZ 16
#define MAX_ROCKER_NAME_LEN (ROCKER_IFNAMSIZ - 1 - 3 - 3)
if (strlen(r->name) > MAX_ROCKER_NAME_LEN) {
fprintf(stderr,
"rocker: name too long; please shorten to at most %d chars\n",
MAX_ROCKER_NAME_LEN);
return -EINVAL;
}
if (memcmp(&r->fp_start_macaddr, &zero, sizeof(zero)) == 0) {
memcpy(&r->fp_start_macaddr, &dflt, sizeof(dflt));
r->fp_start_macaddr.a[4] += (sw_index++);

7
hw/net/rocker/rocker_fp.c
View File

@ -41,6 +41,11 @@ struct fp_port {
NICConf conf;
};
char *fp_port_get_name(FpPort *port)
{
return port->name;
}
bool fp_port_get_link_up(FpPort *port)
{
return !qemu_get_queue(port->nic)->link_down;
@ -201,7 +206,7 @@ FpPort *fp_port_alloc(Rocker *r, char *sw_name,
/* front-panel switch port names are 1-based */
port->name = g_strdup_printf("%s.%d", sw_name, port->pport);
port->name = g_strdup_printf("%sp%d", sw_name, port->pport);
memcpy(port->conf.macaddr.a, start_mac, sizeof(port->conf.macaddr.a));
port->conf.macaddr.a[5] += index;

1
hw/net/rocker/rocker_fp.h
View File

@ -26,6 +26,7 @@ typedef struct fp_port FpPort;
int fp_port_eg(FpPort *port, const struct iovec *iov, int iovcnt);
char *fp_port_get_name(FpPort *port);
bool fp_port_get_link_up(FpPort *port);
void fp_port_get_macaddr(FpPort *port, MACAddr *macaddr);
void fp_port_set_macaddr(FpPort *port, MACAddr *macaddr);

1
hw/net/rocker/rocker_hw.h
View File

@ -179,6 +179,7 @@ enum {
ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, /* binary */
ROCKER_TLV_CMD_PORT_SETTINGS_MODE, /* u8 */
ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, /* u8 */
ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME, /* binary */
__ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
ROCKER_TLV_CMD_PORT_SETTINGS_MAX = __ROCKER_TLV_CMD_PORT_SETTINGS_MAX - 1,