[PATCH v3 02/14] net: ionic: Update LIF identity with additional RDMA capabilities

Abhijit Gangurde
2025-06-24T12:13:43Z

Firmware sends the RDMA capability in a response for LIF_IDENTIFY
device command. Update the LIF indentify with additional RDMA
capabilities used by driver and firmware.

Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
---
.../net/ethernet/pensando/ionic/ionic_if.h | 29 +++++++++++++++----
1 file changed, 24 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_if.h b/drivers/net/ethernet/pensando/ionic/ionic_if.h
index f1ddbe9994a3..59d6e97b3986 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_if.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_if.h
@@ -494,6 +494,16 @@ union ionic_lif_config {
__le32 words[64];
};

+/**
+ * enum ionic_lif_rdma_cap_stats - LIF stat type
+ * @IONIC_LIF_RDMA_STAT_GLOBAL: Global stats
+ * @IONIC_LIF_RDMA_STAT_QP: Queue pair stats
+ */
+enum ionic_lif_rdma_cap_stats {
+ IONIC_LIF_RDMA_STAT_GLOBAL = BIT(0),
+ IONIC_LIF_RDMA_STAT_QP = BIT(1),
+};
+
/**
* struct ionic_lif_identity - LIF identity information (type-specific)
*
@@ -513,10 +523,10 @@ union ionic_lif_config {
* @eth.config: LIF config struct with features, mtu, mac, q counts
*
* @rdma: RDMA identify structure
- * @rdma.version: RDMA version of opcodes and queue descriptors
+ * @rdma.version: RDMA capability version
* @rdma.qp_opcodes: Number of RDMA queue pair opcodes supported
* @rdma.admin_opcodes: Number of RDMA admin opcodes supported
- * @rdma.rsvd: reserved byte(s)
+ * @rdma.minor_version: RDMA capability minor version
* @rdma.npts_per_lif: Page table size per LIF
* @rdma.nmrs_per_lif: Number of memory regions per LIF
* @rdma.nahs_per_lif: Number of address handles per LIF
@@ -526,12 +536,17 @@ union ionic_lif_config {
* @rdma.rrq_stride: Remote RQ work request stride
* @rdma.rsq_stride: Remote SQ work request stride
* @rdma.dcqcn_profiles: Number of DCQCN profiles
- * @rdma.rsvd_dimensions: reserved byte(s)
+ * @rdma.udma_shift: Log2 number of queues per queue group
+ * @rdma.rsvd_dimensions: Reserved byte
+ * @rdma.page_size_cap: Supported page sizes
* @rdma.aq_qtype: RDMA Admin Qtype
* @rdma.sq_qtype: RDMA Send Qtype
* @rdma.rq_qtype: RDMA Receive Qtype
* @rdma.cq_qtype: RDMA Completion Qtype
* @rdma.eq_qtype: RDMA Event Qtype
+ * @rdma.stats_type: Supported statistics type
+ * (enum ionic_lif_rdma_cap_stats)
+ * @rdma.rsvd1: Reserved byte(s)
* @words: word access to struct contents
*/
union ionic_lif_identity {
@@ -557,7 +572,7 @@ union ionic_lif_identity {
u8 version;
u8 qp_opcodes;
u8 admin_opcodes;
- u8 rsvd;
+ u8 minor_version;
__le32 npts_per_lif;
__le32 nmrs_per_lif;
__le32 nahs_per_lif;
@@ -567,12 +582,16 @@ union ionic_lif_identity {
u8 rrq_stride;
u8 rsq_stride;
u8 dcqcn_profiles;
- u8 rsvd_dimensions[10];
+ u8 udma_shift;
+ u8 rsvd_dimensions;
+ __le64 page_size_cap;
struct ionic_lif_logical_qtype aq_qtype;
struct ionic_lif_logical_qtype sq_qtype;
struct ionic_lif_logical_qtype rq_qtype;
struct ionic_lif_logical_qtype cq_qtype;
struct ionic_lif_logical_qtype eq_qtype;
+ __le16 stats_type;
+ u8 rsvd1[162];
} __packed rdma;
} __packed;
__le32 words[478];
--
2.43.0