diff options
| author | Vijay Khemka <vijaykhemka@fb.com> | 2018-10-05 10:46:01 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-05 14:54:47 -0700 |
| commit | fb4ee67529ff3e4c5874768477887c2df5714c96 (patch) | |
| tree | bf3176bd5f28d89058a23f3b88ebdf165bd1dad5 /net/ncsi/ncsi-cmd.c | |
| parent | 6f8474922b443fd4a89a5dd5b891a3c6a144b9c7 (diff) | |
| download | linux-fb4ee67529ff3e4c5874768477887c2df5714c96.tar.gz | |
net/ncsi: Add NCSI OEM command support
This patch adds OEM commands and response handling. It also defines OEM command and response structure as per NCSI specification along with its handlers. ncsi_cmd_handler_oem: This is a generic command request handler for OEM commands ncsi_rsp_handler_oem: This is a generic response handler for OEM commands Signed-off-by: Vijay Khemka <vijaykhemka@fb.com> Reviewed-by: Justin Lee <justin.lee1@dell.com> Reviewed-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ncsi/ncsi-cmd.c')
| -rw-r--r-- | net/ncsi/ncsi-cmd.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/net/ncsi/ncsi-cmd.c b/net/ncsi/ncsi-cmd.c index 7567ca63aae2..82b7d9201db8 100644 --- a/net/ncsi/ncsi-cmd.c +++ b/net/ncsi/ncsi-cmd.c @@ -211,6 +211,25 @@ static int ncsi_cmd_handler_snfc(struct sk_buff *skb, return 0; } +static int ncsi_cmd_handler_oem(struct sk_buff *skb, + struct ncsi_cmd_arg *nca) +{ + struct ncsi_cmd_oem_pkt *cmd; + unsigned int len; + + len = sizeof(struct ncsi_cmd_pkt_hdr) + 4; + if (nca->payload < 26) + len += 26; + else + len += nca->payload; + + cmd = skb_put_zero(skb, len); + memcpy(&cmd->mfr_id, nca->data, nca->payload); + ncsi_cmd_build_header(&cmd->cmd.common, nca); + + return 0; +} + static struct ncsi_cmd_handler { unsigned char type; int payload; @@ -244,7 +263,7 @@ static struct ncsi_cmd_handler { { NCSI_PKT_CMD_GNS, 0, ncsi_cmd_handler_default }, { NCSI_PKT_CMD_GNPTS, 0, ncsi_cmd_handler_default }, { NCSI_PKT_CMD_GPS, 0, ncsi_cmd_handler_default }, - { NCSI_PKT_CMD_OEM, 0, NULL }, + { NCSI_PKT_CMD_OEM, -1, ncsi_cmd_handler_oem }, { NCSI_PKT_CMD_PLDM, 0, NULL }, { NCSI_PKT_CMD_GPUUID, 0, ncsi_cmd_handler_default } }; @@ -316,8 +335,13 @@ int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca) return -ENOENT; } - /* Get packet payload length and allocate the request */ - nca->payload = nch->payload; + /* Get packet payload length and allocate the request + * It is expected that if length set as negative in + * handler structure means caller is initializing it + * and setting length in nca before calling xmit function + */ + if (nch->payload >= 0) + nca->payload = nch->payload; nr = ncsi_alloc_command(nca); if (!nr) return -ENOMEM; |