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hw/rdma: Add support for MAD packets

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MAD (Management Datagram) packets are widely used by various modules
both in kernel and in user space for example the rdma_* API which is
used to create and maintain "connection" layer on top of RDMA uses
several types of MAD packets.

For more information please refer to chapter 13.4 in Volume 1
Architecture Specification, Release 1.1 available here:
https://www.infinibandta.org/ibta-specifications-download/

To support MAD packets the device uses an external utility
(contrib/rdmacm-mux) to relay packets from and to the guest driver.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum<marcel.apfelbaum@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
This commit is contained in:
Yuval Shaia 2018-12-21 16:40:19 +02:00 • committed by Marcel Apfelbaum
parent 305bdd7a57
commit 605ec1663b
5 changed files with 260 additions and 10 deletions
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4
hw/rdma/vmw/pvrdma_main.c
View file

@ -51,6 +51,7 @@ static Property pvrdma_dev_properties[] = {
DEFINE_PROP_INT32("dev-caps-max-qp-init-rd-atom", PVRDMADev,
dev_attr.max_qp_init_rd_atom, MAX_QP_INIT_RD_ATOM),
DEFINE_PROP_INT32("dev-caps-max-ah", PVRDMADev, dev_attr.max_ah, MAX_AH),
DEFINE_PROP_CHR("mad-chardev", PVRDMADev, mad_chr),
DEFINE_PROP_END_OF_LIST(),
};
@ -613,7 +614,8 @@ static void pvrdma_realize(PCIDevice *pdev, Error **errp)
rc = rdma_backend_init(&dev->backend_dev, pdev, &dev->rdma_dev_res,
dev->backend_device_name, dev->backend_port_num,
dev->backend_gid_idx, &dev->dev_attr, errp);
dev->backend_gid_idx, &dev->dev_attr, &dev->mad_chr,
errp);
if (rc) {
goto out;
}