net/ncsi: add get MAC address command to get Intel i210 MAC address

This patch adds OEM Intel GMA command and response handler for it.

Signed-off-by: Brad Ho <Brad_Ho@phoenix.com>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Ivan Mikhaylov <i.mikhaylov@yadro.com>
Link: https://lore.kernel.org/r/20210830171806.119857-2-i.mikhaylov@yadro.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h
index 0b6cfd3..03757e7 100644 (file)
--- a/net/ncsi/internal.h
+++ b/net/ncsi/internal.h
@@ -80,6 +80,7 @@ enum {
 #define NCSI_OEM_MFR_BCM_ID             0x113d
 #define NCSI_OEM_MFR_INTEL_ID           0x157
 /* Intel specific OEM command */
+#define NCSI_OEM_INTEL_CMD_GMA          0x06   /* CMD ID for Get MAC */
 #define NCSI_OEM_INTEL_CMD_KEEP_PHY     0x20   /* CMD ID for Keep PHY up */
 /* Broadcom specific OEM Command */
 #define NCSI_OEM_BCM_CMD_GMA            0x01   /* CMD ID for Get MAC */
@@ -89,6 +90,7 @@ enum {
 #define NCSI_OEM_MLX_CMD_SMAF           0x01   /* CMD ID for Set MC Affinity */
 #define NCSI_OEM_MLX_CMD_SMAF_PARAM     0x07   /* Parameter for SMAF         */
 /* OEM Command payload lengths*/
+#define NCSI_OEM_INTEL_CMD_GMA_LEN      5
 #define NCSI_OEM_INTEL_CMD_KEEP_PHY_LEN 7
 #define NCSI_OEM_BCM_CMD_GMA_LEN        12
 #define NCSI_OEM_MLX_CMD_GMA_LEN        8
@@ -99,6 +101,7 @@ enum {
 /* Mac address offset in OEM response */
 #define BCM_MAC_ADDR_OFFSET             28
 #define MLX_MAC_ADDR_OFFSET             8
+#define INTEL_MAC_ADDR_OFFSET           1
 
 
 struct ncsi_channel_version {

diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index 89c7742..7121ce2 100644 (file)
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -795,13 +795,36 @@ static int ncsi_oem_smaf_mlx(struct ncsi_cmd_arg *nca)
        return ret;
 }
 
+static int ncsi_oem_gma_handler_intel(struct ncsi_cmd_arg *nca)
+{
+       unsigned char data[NCSI_OEM_INTEL_CMD_GMA_LEN];
+       int ret = 0;
+
+       nca->payload = NCSI_OEM_INTEL_CMD_GMA_LEN;
+
+       memset(data, 0, NCSI_OEM_INTEL_CMD_GMA_LEN);
+       *(unsigned int *)data = ntohl((__force __be32)NCSI_OEM_MFR_INTEL_ID);
+       data[4] = NCSI_OEM_INTEL_CMD_GMA;
+
+       nca->data = data;
+
+       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_MLX_ID, ncsi_oem_gma_handler_mlx }
+       { NCSI_OEM_MFR_MLX_ID, ncsi_oem_gma_handler_mlx },
+       { NCSI_OEM_MFR_INTEL_ID, ncsi_oem_gma_handler_intel }
 };
 
 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 80938b3..ba66c7d 100644 (file)
--- a/net/ncsi/ncsi-pkt.h
+++ b/net/ncsi/ncsi-pkt.h
@@ -178,6 +178,12 @@ struct ncsi_rsp_oem_bcm_pkt {
        unsigned char           data[];      /* Cmd specific Data */
 };
 
+/* Intel Response Data */
+struct ncsi_rsp_oem_intel_pkt {
+       unsigned char           cmd;         /* OEM Command ID    */
+       unsigned char           data[];      /* Cmd specific Data */
+};
+
 /* Get Link Status */
 struct ncsi_rsp_gls_pkt {
        struct ncsi_rsp_pkt_hdr rsp;        /* Response header   */

diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c
index d483748..6447a09 100644 (file)
--- a/net/ncsi/ncsi-rsp.c
+++ b/net/ncsi/ncsi-rsp.c
@@ -699,9 +699,51 @@ static int ncsi_rsp_handler_oem_bcm(struct ncsi_request *nr)
        return 0;
 }
 
+/* Response handler for Intel command Get Mac Address */
+static int ncsi_rsp_handler_oem_intel_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[INTEL_MAC_ADDR_OFFSET], ETH_ALEN);
+       /* Increase mac address by 1 for BMC's address */
+       eth_addr_inc((u8 *)saddr.sa_data);
+       if (!is_valid_ether_addr((const u8 *)saddr.sa_data))
+               return -ENXIO;
+
+       /* Set the flag for GMA command which should only be called once */
+       ndp->gma_flag = 1;
+
+       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 Intel card */
 static int ncsi_rsp_handler_oem_intel(struct ncsi_request *nr)
 {
+       struct ncsi_rsp_oem_intel_pkt *intel;
+       struct ncsi_rsp_oem_pkt *rsp;
+
+       /* Get the response header */
+       rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
+       intel = (struct ncsi_rsp_oem_intel_pkt *)(rsp->data);
+
+       if (intel->cmd == NCSI_OEM_INTEL_CMD_GMA)
+               return ncsi_rsp_handler_oem_intel_gma(nr);
+
        return 0;
 }