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IB/hfi1: OPA_VNIC RDMA netdev support

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Add support to create and free OPA_VNIC rdma netdev devices.
Implement netstack interface functionality including xmit_skb,
receive side NAPI etc. Also implement rdma netdev control functions.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Signed-off-by: Andrzej Kacprowski <andrzej.kacprowski@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Vishwanathapura, Niranjana
2017-04-12 20:29:28 -07:00
committed by Doug Ledford
parent 1bd671ab3f
commit d4829ea603
6 changed files with 853 additions and 7 deletions
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25
drivers/infiniband/hw/hfi1/driver.c
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@@ -1,5 +1,5 @@
/*
* Copyright(c) 2015, 2016 Intel Corporation.
* Copyright(c) 2015-2017 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
@@ -60,6 +60,7 @@
#include "qp.h"
#include "sdma.h"
#include "debugfs.h"
#include "vnic.h"
#undef pr_fmt
#define pr_fmt(fmt) DRIVER_NAME ": " fmt
@@ -1381,15 +1382,31 @@ int process_receive_ib(struct hfi1_packet *packet)
return RHF_RCV_CONTINUE;
}
static inline bool hfi1_is_vnic_packet(struct hfi1_packet *packet)
{
/* Packet received in VNIC context via RSM */
if (packet->rcd->is_vnic)
return true;
if ((HFI1_GET_L2_TYPE(packet->ebuf) == OPA_VNIC_L2_TYPE) &&
(HFI1_GET_L4_TYPE(packet->ebuf) == OPA_VNIC_L4_ETHR))
return true;
return false;
}
int process_receive_bypass(struct hfi1_packet *packet)
{
struct hfi1_devdata *dd = packet->rcd->dd;
if (unlikely(rhf_err_flags(packet->rhf)))
if (unlikely(rhf_err_flags(packet->rhf))) {
handle_eflags(packet);
} else if (hfi1_is_vnic_packet(packet)) {
hfi1_vnic_bypass_rcv(packet);
return RHF_RCV_CONTINUE;
}
dd_dev_err(dd,
"Bypass packets are not supported in normal operation. Dropping\n");
dd_dev_err(dd, "Unsupported bypass packet. Dropping\n");
incr_cntr64(&dd->sw_rcv_bypass_packet_errors);
if (!(dd->err_info_rcvport.status_and_code & OPA_EI_STATUS_SMASK)) {
u64 *flits = packet->ebuf;