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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>
This commit is contained in:
Maher Sanalla 2025-11-20 17:15:15 +02:00 committed by Leon Romanovsky
parent 6dbd547ada
commit 0f1f9b5e47
2 changed files with 4 additions and 0 deletions
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3
drivers/infiniband/core/verbs.c
View File

@ -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;
}
}

1
include/rdma/ib_verbs.h
View File

@ -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,
};
/**