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net/ncsi: Add NCSI Mellanox OEM command

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This patch adds OEM Mellanox commands and response handling. It also
defines OEM Get MAC Address handler to get and configure the device.

ncsi_oem_gma_handler_mlx: This handler send NCSI mellanox command for
getting mac address.
ncsi_rsp_handler_oem_mlx: This handles response received for all
mellanox OEM commands.
ncsi_rsp_handler_oem_mlx_gma: This handles get mac address response and
set it to device.

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vijay Khemka 2018-11-26 13:49:04 -08:00 committed by David S. Miller
parent bd7153bd83
commit 16e8c4ca21
4 changed files with 81 additions and 2 deletions
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5
net/ncsi/internal.h
View File

@ -73,10 +73,15 @@ enum {
#define NCSI_OEM_MFR_BCM_ID 0x113d
/* Broadcom specific OEM Command */
#define NCSI_OEM_BCM_CMD_GMA 0x01 /* CMD ID for Get MAC */
/* Mellanox specific OEM Command */
#define NCSI_OEM_MLX_CMD_GMA 0x00 /* CMD ID for Get MAC */
#define NCSI_OEM_MLX_CMD_GMA_PARAM 0x1b /* Parameter for GMA */
/* OEM Command payload lengths*/
#define NCSI_OEM_BCM_CMD_GMA_LEN 12
#define NCSI_OEM_MLX_CMD_GMA_LEN 8
/* Mac address offset in OEM response */
#define BCM_MAC_ADDR_OFFSET 28
#define MLX_MAC_ADDR_OFFSET 8
struct ncsi_channel_version {

28
net/ncsi/ncsi-manage.c
View File

@ -710,12 +710,38 @@ static int ncsi_oem_gma_handler_bcm(struct ncsi_cmd_arg *nca)
return ret;
}
static int ncsi_oem_gma_handler_mlx(struct ncsi_cmd_arg *nca)
{
union {
u8 data_u8[NCSI_OEM_MLX_CMD_GMA_LEN];
u32 data_u32[NCSI_OEM_MLX_CMD_GMA_LEN / sizeof(u32)];
} u;
int ret = 0;
nca->payload = NCSI_OEM_MLX_CMD_GMA_LEN;
memset(&u, 0, sizeof(u));
u.data_u32[0] = ntohl(NCSI_OEM_MFR_MLX_ID);
u.data_u8[5] = NCSI_OEM_MLX_CMD_GMA;
u.data_u8[6] = NCSI_OEM_MLX_CMD_GMA_PARAM;
nca->data = u.data_u8;
ret = ncsi_xmit_cmd(nca);
if (ret)
netdev_err(nca->ndp->ndev.dev,
"NCSI: Failed to transmit cmd 0x%x during configure\n",
nca->type);
return ret;
}
/* OEM Command handlers initialization */
static struct ncsi_oem_gma_handler {
unsigned int mfr_id;
int (*handler)(struct ncsi_cmd_arg *nca);
} ncsi_oem_gma_handlers[] = {
{ NCSI_OEM_MFR_BCM_ID, ncsi_oem_gma_handler_bcm }
{ NCSI_OEM_MFR_BCM_ID, ncsi_oem_gma_handler_bcm },
{ NCSI_OEM_MFR_MLX_ID, ncsi_oem_gma_handler_mlx }
};
static int ncsi_gma_handler(struct ncsi_cmd_arg *nca, unsigned int mf_id)

9
net/ncsi/ncsi-pkt.h
View File

@ -165,6 +165,15 @@ struct ncsi_rsp_oem_pkt {
unsigned char data[]; /* Payload data */
};
/* Mellanox Response Data */
struct ncsi_rsp_oem_mlx_pkt {
unsigned char cmd_rev; /* Command Revision */
unsigned char cmd; /* Command ID */
unsigned char param; /* Parameter */
unsigned char optional; /* Optional data */
unsigned char data[]; /* Data */
};
/* Broadcom Response Data */
struct ncsi_rsp_oem_bcm_pkt {
unsigned char ver; /* Payload Version */

41
net/ncsi/ncsi-rsp.c
View File

@ -611,6 +611,45 @@ static int ncsi_rsp_handler_snfc(struct ncsi_request *nr)
return 0;
}
/* Response handler for Mellanox command Get Mac Address */
static int ncsi_rsp_handler_oem_mlx_gma(struct ncsi_request *nr)
{
struct ncsi_dev_priv *ndp = nr->ndp;
struct net_device *ndev = ndp->ndev.dev;
const struct net_device_ops *ops = ndev->netdev_ops;
struct ncsi_rsp_oem_pkt *rsp;
struct sockaddr saddr;
int ret = 0;
/* Get the response header */
rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
saddr.sa_family = ndev->type;
ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
memcpy(saddr.sa_data, &rsp->data[MLX_MAC_ADDR_OFFSET], ETH_ALEN);
ret = ops->ndo_set_mac_address(ndev, &saddr);
if (ret < 0)
netdev_warn(ndev, "NCSI: 'Writing mac address to device failed\n");
return ret;
}
/* Response handler for Mellanox card */
static int ncsi_rsp_handler_oem_mlx(struct ncsi_request *nr)
{
struct ncsi_rsp_oem_mlx_pkt *mlx;
struct ncsi_rsp_oem_pkt *rsp;
/* Get the response header */
rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
mlx = (struct ncsi_rsp_oem_mlx_pkt *)(rsp->data);
if (mlx->cmd == NCSI_OEM_MLX_CMD_GMA &&
mlx->param == NCSI_OEM_MLX_CMD_GMA_PARAM)
return ncsi_rsp_handler_oem_mlx_gma(nr);
return 0;
}
/* Response handler for Broadcom command Get Mac Address */
static int ncsi_rsp_handler_oem_bcm_gma(struct ncsi_request *nr)
{
@ -655,7 +694,7 @@ static struct ncsi_rsp_oem_handler {
unsigned int mfr_id;
int (*handler)(struct ncsi_request *nr);
} ncsi_rsp_oem_handlers[] = {
{ NCSI_OEM_MFR_MLX_ID, NULL },
{ NCSI_OEM_MFR_MLX_ID, ncsi_rsp_handler_oem_mlx },
{ NCSI_OEM_MFR_BCM_ID, ncsi_rsp_handler_oem_bcm }
};