RDMA/core: Add new IB rate for XDR (8x) support

Add the new rates as defined in the Infiniband spec for XDR and 8x
link width support.

Furthermore, modify the utility conversion methods accordingly.

Reference: IB Spec Release 1.8

Reviewed-by: Michael Guralnik <michaelgur@nvidia.com>
Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Link: https://patch.msgid.link/20251120-speed-8-v1-1-e6a7efef8cb8@nvidia.com
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 3a5f81402d2f8b3243fb69a103400bc437bf1354..11b1a194de4438a56e524f09201256851ef60db8 100644 (file)
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -148,6 +148,7 @@ __attribute_const__ int ib_rate_to_mult(enum ib_rate rate)
        case IB_RATE_400_GBPS: return 160;
        case IB_RATE_600_GBPS: return 240;
        case IB_RATE_800_GBPS: return 320;
+       case IB_RATE_1600_GBPS: return 640;
        default:               return  -1;
        }
 }
@@ -178,6 +179,7 @@ __attribute_const__ enum ib_rate mult_to_ib_rate(int mult)
        case 160: return IB_RATE_400_GBPS;
        case 240: return IB_RATE_600_GBPS;
        case 320: return IB_RATE_800_GBPS;
+       case 640: return IB_RATE_1600_GBPS;
        default:  return IB_RATE_PORT_CURRENT;
        }
 }
@@ -208,6 +210,7 @@ __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate)
        case IB_RATE_400_GBPS: return 425000;
        case IB_RATE_600_GBPS: return 637500;
        case IB_RATE_800_GBPS: return 850000;
+       case IB_RATE_1600_GBPS: return 1700000;
        default:               return -1;
        }
 }

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 0a85af610b6b72db33ddd90b30163e18f7038e7d..6aad66bc5dd7438e032247aef93164d4782b6b3a 100644 (file)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -859,6 +859,7 @@ enum ib_rate {
        IB_RATE_400_GBPS = 21,
        IB_RATE_600_GBPS = 22,
        IB_RATE_800_GBPS = 23,
+       IB_RATE_1600_GBPS = 25,
 };
 
 /**