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nfp: parse the mailbox cmsg TLV

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Parse the mailbox TLV.  When control message queue is not available
we can fall back to passing the control messages via the vNIC
mailbox.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski
2019-06-05 14:11:33 -07:00
committed by David S. Miller
parent 3ed77bf766
commit a68634893f
2 changed files with 12 additions and 0 deletions
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4
drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.c
View File

@@ -99,6 +99,10 @@ int nfp_net_tlv_caps_parse(struct device *dev, u8 __iomem *ctrl_mem,
caps->repr_cap = readl(data);
break;
case NFP_NET_CFG_TLV_TYPE_MBOX_CMSG_TYPES:
if (length >= 4)
caps->mbox_cmsg_types = readl(data);
break;
default:
if (!FIELD_GET(NFP_NET_CFG_TLV_HEADER_REQUIRED, hdr))
break;

8
drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
View File

@@ -466,6 +466,11 @@
* %NFP_NET_CFG_TLV_TYPE_REPR_CAP:
* Single word, equivalent of %NFP_NET_CFG_CAP for representors, features which
* can be used on representors.
*
* %NFP_NET_CFG_TLV_TYPE_MBOX_CMSG_TYPES:
* Variable, bitmap of control message types supported by the mailbox handler.
* Bit 0 corresponds to message type 0, bit 1 to 1, etc. Control messages are
* encapsulated into simple TLVs, with an end TLV and written to the Mailbox.
*/
#define NFP_NET_CFG_TLV_TYPE_UNKNOWN 0
#define NFP_NET_CFG_TLV_TYPE_RESERVED 1
@@ -475,6 +480,7 @@
#define NFP_NET_CFG_TLV_TYPE_EXPERIMENTAL0 5
#define NFP_NET_CFG_TLV_TYPE_EXPERIMENTAL1 6
#define NFP_NET_CFG_TLV_TYPE_REPR_CAP 7
#define NFP_NET_CFG_TLV_TYPE_MBOX_CMSG_TYPES 10
struct device;
@@ -484,12 +490,14 @@ struct device;
* @mbox_off: vNIC mailbox area offset
* @mbox_len: vNIC mailbox area length
* @repr_cap: capabilities for representors
* @mbox_cmsg_types: cmsgs which can be passed through the mailbox
*/
struct nfp_net_tlv_caps {
u32 me_freq_mhz;
unsigned int mbox_off;
unsigned int mbox_len;
u32 repr_cap;
u32 mbox_cmsg_types;
};
int nfp_net_tlv_caps_parse(struct device *dev, u8 __iomem *ctrl_mem,