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Commit a6863489 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
Browse files

nfp: parse the mailbox cmsg TLV 



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: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: default avatarDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3ed77bf7

drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h

+8 −0
Original line number Diff line number Diff line
@@ -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,