From 16e8c4ca21a238cdf0355475bf15bd72e92feb8f Mon Sep 17 00:00:00 2001 From: Vijay Khemka Date: Mon, 26 Nov 2018 13:49:04 -0800 Subject: [PATCH] net/ncsi: Add NCSI Mellanox OEM command 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 Signed-off-by: David S. Miller --- net/ncsi/internal.h | 5 +++++ net/ncsi/ncsi-manage.c | 28 +++++++++++++++++++++++++++- net/ncsi/ncsi-pkt.h | 9 +++++++++ net/ncsi/ncsi-rsp.c | 41 ++++++++++++++++++++++++++++++++++++++++- 4 files changed, 81 insertions(+), 2 deletions(-) diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h index 9e3642b802c43..87505600dbb2d 100644 --- a/net/ncsi/internal.h +++ b/net/ncsi/internal.h @@ -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 { diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c index 92e59f07f9a74..31359d5e14ad3 100644 --- a/net/ncsi/ncsi-manage.c +++ b/net/ncsi/ncsi-manage.c @@ -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) diff --git a/net/ncsi/ncsi-pkt.h b/net/ncsi/ncsi-pkt.h index 4d3f06be38bd3..2a6d83a596c9b 100644 --- a/net/ncsi/ncsi-pkt.h +++ b/net/ncsi/ncsi-pkt.h @@ -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 */ diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c index de7737a278895..dc07fcc7938ec 100644 --- a/net/ncsi/ncsi-rsp.c +++ b/net/ncsi/ncsi-rsp.c @@ -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 } };