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Commit 5bc4bc72 authored by Chuck Lever's avatar Chuck Lever Committed by Anna Schumaker
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xprtrdma: Remove Tavor MTU setting 



Clean up.  Remove HCA-specific clutter in xprtrdma, which is
supposed to be device-independent.

Hal Rosenstock <hal@dev.mellanox.co.il> observes:
> Note that there is OpenSM option (enable_quirks) to return 1K MTU
> in SA PathRecord responses for Tavor so that can be used for this.
> The default setting for enable_quirks is FALSE so that would need
> changing.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent ec62f40d

net/sunrpc/xprtrdma/verbs.c

+0 −14
Original line number Diff line number Diff line
@@ -48,7 +48,6 @@ 
 */



#include <linux/interrupt.h>

#include <linux/pci.h>	/* for Tavor hack below */

#include <linux/slab.h>

#include <asm/bitops.h>
@@ -920,19 +919,6 @@ retry: 
		}

	}



/* XXX Tavor device performs badly with 2K MTU! */

if (strnicmp(ia->ri_id->device->dma_device->bus->name, "pci", 3) == 0) {

	struct pci_dev *pcid = to_pci_dev(ia->ri_id->device->dma_device);

	if (pcid->device == PCI_DEVICE_ID_MELLANOX_TAVOR &&

	    (pcid->vendor == PCI_VENDOR_ID_MELLANOX ||

	     pcid->vendor == PCI_VENDOR_ID_TOPSPIN)) {

		struct ib_qp_attr attr = {

			.path_mtu = IB_MTU_1024

		};

		rc = ib_modify_qp(ia->ri_id->qp, &attr, IB_QP_PATH_MTU);

	}

}



	ep->rep_connected = 0;



	rc = rdma_connect(ia->ri_id, &ep->rep_remote_cma);