[PATCH v4 02/14] net: ionic: Update LIF identity with additional RDMA capabilities
From: Abhijit Gangurde <abhijit.gangurde@amd.com>
Date: 2025-07-23 17:32:24
Also in:
linux-doc, linux-rdma, lkml
Subsystem:
networking drivers, pensando ethernet drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Brett Creeley, Linus Torvalds
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 <redacted> 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