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[intelxl] Reuse admin command descriptor and buffer for VF responses 

Remove the large static admin data buffer structure embedded within
struct intelxl_nic, and instead copy the response received via the
"send to VF" admin queue event to the (already consumed and completed)
admin command descriptor and data buffer.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/697/head^2
Michael Brown 2022-08-08 14:48:25 +01:00
parent 67f8878e10
commit c220b93f31
2 changed files with 15 additions and 17 deletions
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4
src/drivers/net/intelxl.h
View File

@ -1092,10 +1092,6 @@ struct intelxl_nic {
/** Current VF opcode */
unsigned int vopcode;
/** Current VF return value */
int vret;
/** Current VF event data buffer */
union intelxl_admin_buffer vbuf;
/** Transmit descriptor ring */
struct intelxl_ring tx;

28
src/drivers/net/intelxlvf.c
View File

@ -201,7 +201,7 @@ static int intelxlvf_admin_command ( struct net_device *netdev ) {
}
/* Check for errors */
if ( intelxl->vret != 0 )
if ( cmd->vret != 0 )
return -EIO;
return 0;
@ -271,7 +271,9 @@ static void intelxlvf_admin_event ( struct net_device *netdev,
struct intelxl_admin_descriptor *evt,
union intelxl_admin_buffer *buf ) {
struct intelxl_nic *intelxl = netdev->priv;
struct intelxl_admin *admin = &intelxl->command;
unsigned int vopcode;
unsigned int index;
/* Ignore unrecognised events */
if ( evt->opcode != cpu_to_le16 ( INTELXL_ADMIN_SEND_TO_VF ) ) {
@ -283,12 +285,14 @@ static void intelxlvf_admin_event ( struct net_device *netdev,
/* Record command response if applicable */
vopcode = le32_to_cpu ( evt->vopcode );
if ( vopcode == intelxl->vopcode ) {
memcpy ( &intelxl->vbuf, buf, sizeof ( intelxl->vbuf ) );
index = ( ( admin->index - 1 ) % INTELXL_ADMIN_NUM_DESC );
memcpy ( &admin->desc[index], evt, sizeof ( *evt ) );
memcpy ( &admin->buf[index], buf, sizeof ( *buf ) );
intelxl->vopcode = 0;
intelxl->vret = le32_to_cpu ( evt->vret );
if ( intelxl->vret != 0 ) {
if ( evt->vret != 0 ) {
DBGC ( intelxl, "INTELXL %p admin VF command %#x "
"error %d\n", intelxl, vopcode, intelxl->vret );
"error %d\n", intelxl, vopcode,
le32_to_cpu ( evt->vret ) );
DBGC_HDA ( intelxl, virt_to_phys ( evt ), evt,
sizeof ( *evt ) );
DBGC_HDA ( intelxl, virt_to_phys ( buf ), buf,
@ -322,7 +326,6 @@ static void intelxlvf_admin_event ( struct net_device *netdev,
static int intelxlvf_admin_version ( struct net_device *netdev ) {
struct intelxl_nic *intelxl = netdev->priv;
struct intelxl_admin_descriptor *cmd;
struct intelxl_admin_vf_version_buffer *ver;
union intelxl_admin_buffer *buf;
unsigned int api;
int rc;
@ -339,10 +342,9 @@ static int intelxlvf_admin_version ( struct net_device *netdev ) {
/* Issue command */
if ( ( rc = intelxlvf_admin_command ( netdev ) ) != 0 )
return rc;
ver = &intelxl->vbuf.ver;
api = le32_to_cpu ( ver->major );
api = le32_to_cpu ( buf->ver.major );
DBGC ( intelxl, "INTELXL %p API v%d.%d\n",
intelxl, api, le32_to_cpu ( ver->minor ) );
intelxl, api, le32_to_cpu ( buf->ver.minor ) );
/* Check for API compatibility */
if ( api > INTELXL_ADMIN_VF_API_MAJOR ) {
@ -363,21 +365,21 @@ static int intelxlvf_admin_version ( struct net_device *netdev ) {
static int intelxlvf_admin_get_resources ( struct net_device *netdev ) {
struct intelxl_nic *intelxl = netdev->priv;
struct intelxl_admin_descriptor *cmd;
struct intelxl_admin_vf_get_resources_buffer *res;
union intelxl_admin_buffer *buf;
int rc;
/* Populate descriptor */
cmd = intelxl_admin_command_descriptor ( intelxl );
cmd->vopcode = cpu_to_le32 ( INTELXL_ADMIN_VF_GET_RESOURCES );
buf = intelxl_admin_command_buffer ( intelxl );
/* Issue command */
if ( ( rc = intelxlvf_admin_command ( netdev ) ) != 0 )
return rc;
/* Parse response */
res = &intelxl->vbuf.res;
intelxl->vsi = le16_to_cpu ( res->vsi );
memcpy ( netdev->hw_addr, res->mac, ETH_ALEN );
intelxl->vsi = le16_to_cpu ( buf->res.vsi );
memcpy ( netdev->hw_addr, buf->res.mac, ETH_ALEN );
DBGC ( intelxl, "INTELXL %p VSI %#04x\n", intelxl, intelxl->vsi );
return 0;