From: Grzegorz Andrejczuk <grzegorz.andrejczuk@xxxxxxxxx>
As described in earlier patches, ipoib netdev will share receive
contexts with existing VNIC netdev through a dummy netdev. The
following changes are made to achieve that:
- Set up netdev receive contexts after user contexts. A function is
added to count the available netdev receive contexts.
- Add functions to set/get receive map table free index.
- Rename NUM_VNIC_MAP_ENTRIES as NUM_NETDEV_MAP_ENTRIES.
- Let the dummy netdev own the receive contexts instead of VNIC.
- Allocate the dummy netdev when the hfi1 device is added and free it
when the device is removed.
- Initialize AIP RSM rules when the IpoIb rxq is initialized and
remove the rules when it is de-initialized.
- Convert VNIC to use the dummy netdev.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
Signed-off-by: Sadanand Warrier <sadanand.warrier@xxxxxxxxx>
Signed-off-by: Grzegorz Andrejczuk <grzegorz.andrejczuk@xxxxxxxxx>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
---
drivers/infiniband/hw/hfi1/chip.c | 73 ++++---
drivers/infiniband/hw/hfi1/driver.c | 18 --
drivers/infiniband/hw/hfi1/hfi.h | 14 -
drivers/infiniband/hw/hfi1/init.c | 9 -
drivers/infiniband/hw/hfi1/ipoib_rx.c | 10 +
drivers/infiniband/hw/hfi1/msix.c | 12 +
drivers/infiniband/hw/hfi1/msix.h | 2
drivers/infiniband/hw/hfi1/netdev.h | 19 ++
drivers/infiniband/hw/hfi1/netdev_rx.c | 46 +++++
drivers/infiniband/hw/hfi1/vnic.h | 5 -
drivers/infiniband/hw/hfi1/vnic_main.c | 312 +++++---------------------------
11 files changed, 178 insertions(+), 342 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c
index 2117612..7f35b9e 100644
--- a/drivers/infiniband/hw/hfi1/chip.c
+++ b/drivers/infiniband/hw/hfi1/chip.c
@@ -13396,8 +13396,7 @@ static int set_up_interrupts(struct hfi1_devdata *dd)
static int set_up_context_variables(struct hfi1_devdata *dd)
{
unsigned long num_kernel_contexts;
- u16 num_netdev_contexts = HFI1_NUM_VNIC_CTXT;
- int total_contexts;
+ u16 num_netdev_contexts;
int ret;
unsigned ngroups;
int rmt_count;
@@ -13434,13 +13433,6 @@ static int set_up_context_variables(struct hfi1_devdata *dd)
num_kernel_contexts = send_contexts - num_vls - 1;
}
- /* Accommodate VNIC contexts if possible */
- if ((num_kernel_contexts + num_netdev_contexts) > rcv_contexts) {
- dd_dev_err(dd, "No receive contexts available for VNIC\n");
- num_netdev_contexts = 0;
- }
- total_contexts = num_kernel_contexts + num_netdev_contexts;
-
/*
* User contexts:
* - default to 1 user context per real (non-HT) CPU core if
@@ -13453,15 +13445,19 @@ static int set_up_context_variables(struct hfi1_devdata *dd)
/*
* Adjust the counts given a global max.
*/
- if (total_contexts + n_usr_ctxts > rcv_contexts) {
+ if (num_kernel_contexts + n_usr_ctxts > rcv_contexts) {
dd_dev_err(dd,
- "Reducing # user receive contexts to: %d, from %u\n",
- rcv_contexts - total_contexts,
+ "Reducing # user receive contexts to: %u, from %u\n",
+ (u32)(rcv_contexts - num_kernel_contexts),
n_usr_ctxts);
/* recalculate */
- n_usr_ctxts = rcv_contexts - total_contexts;
+ n_usr_ctxts = rcv_contexts - num_kernel_contexts;
}
+ num_netdev_contexts =
+ hfi1_num_netdev_contexts(dd, rcv_contexts -
+ (num_kernel_contexts + n_usr_ctxts),
+ &node_affinity.real_cpu_mask);
/*
* The RMT entries are currently allocated as shown below:
* 1. QOS (0 to 128 entries);
@@ -13487,17 +13483,16 @@ static int set_up_context_variables(struct hfi1_devdata *dd)
n_usr_ctxts = user_rmt_reduced;
}
- total_contexts += n_usr_ctxts;
-
- /* the first N are kernel contexts, the rest are user/vnic contexts */
- dd->num_rcv_contexts = total_contexts;
+ /* the first N are kernel contexts, the rest are user/netdev contexts */
+ dd->num_rcv_contexts =
+ num_kernel_contexts + n_usr_ctxts + num_netdev_contexts;
dd->n_krcv_queues = num_kernel_contexts;
dd->first_dyn_alloc_ctxt = num_kernel_contexts;
dd->num_netdev_contexts = num_netdev_contexts;
dd->num_user_contexts = n_usr_ctxts;
dd->freectxts = n_usr_ctxts;
dd_dev_info(dd,
- "rcv contexts: chip %d, used %d (kernel %d, vnic %u, user %u)\n",
+ "rcv contexts: chip %d, used %d (kernel %d, netdev %u, user %u)\n",
rcv_contexts,
(int)dd->num_rcv_contexts,
(int)dd->n_krcv_queues,
@@ -14554,7 +14549,8 @@ static bool hfi1_netdev_update_rmt(struct hfi1_devdata *dd)
u8 ctx_id = 0;
u64 reg;
u32 regoff;
- int rmt_start = dd->vnic.rmt_start;
+ int rmt_start = hfi1_netdev_get_free_rmt_idx(dd);
+ int ctxt_count = hfi1_netdev_ctxt_count(dd);
/* We already have contexts mapped in RMT */
if (has_rsm_rule(dd, RSM_INS_VNIC) || has_rsm_rule(dd, RSM_INS_AIP)) {
@@ -14562,7 +14558,7 @@ static bool hfi1_netdev_update_rmt(struct hfi1_devdata *dd)
return true;
}
- if (hfi1_is_rmt_full(rmt_start, NUM_VNIC_MAP_ENTRIES)) {
+ if (hfi1_is_rmt_full(rmt_start, NUM_NETDEV_MAP_ENTRIES)) {
dd_dev_err(dd, "Not enought RMT entries used = %d\n",
rmt_start);
return false;
@@ -14570,27 +14566,27 @@ static bool hfi1_netdev_update_rmt(struct hfi1_devdata *dd)
dev_dbg(&(dd)->pcidev->dev, "RMT start = %d, end %d\n",
rmt_start,
- rmt_start + NUM_VNIC_MAP_ENTRIES);
+ rmt_start + NUM_NETDEV_MAP_ENTRIES);
/* Update RSM mapping table, 32 regs, 256 entries - 1 ctx per byte */
regoff = RCV_RSM_MAP_TABLE + (rmt_start / 8) * 8;
reg = read_csr(dd, regoff);
- for (i = 0; i < NUM_VNIC_MAP_ENTRIES; i++) {
+ for (i = 0; i < NUM_NETDEV_MAP_ENTRIES; i++) {
/* Update map register with netdev context */
j = (rmt_start + i) % 8;
reg &= ~(0xffllu << (j * 8));
- reg |= (u64)dd->vnic.ctxt[ctx_id++]->ctxt << (j * 8);
+ reg |= (u64)hfi1_netdev_get_ctxt(dd, ctx_id++)->ctxt << (j * 8);
/* Wrap up netdev ctx index */
- ctx_id %= dd->vnic.num_ctxt;
+ ctx_id %= ctxt_count;
/* Write back map register */
- if (j == 7 || ((i + 1) == NUM_VNIC_MAP_ENTRIES)) {
+ if (j == 7 || ((i + 1) == NUM_NETDEV_MAP_ENTRIES)) {
dev_dbg(&(dd)->pcidev->dev,
"RMT[%d] =0x%llx\n",
regoff - RCV_RSM_MAP_TABLE, reg);
write_csr(dd, regoff, reg);
regoff += 8;
- if (i < (NUM_VNIC_MAP_ENTRIES - 1))
+ if (i < (NUM_NETDEV_MAP_ENTRIES - 1))
reg = read_csr(dd, regoff);
}
}
@@ -14617,8 +14613,9 @@ void hfi1_init_aip_rsm(struct hfi1_devdata *dd)
* exist yet
*/
if (atomic_fetch_inc(&dd->ipoib_rsm_usr_num) == 0) {
+ int rmt_start = hfi1_netdev_get_free_rmt_idx(dd);
struct rsm_rule_data rrd = {
- .offset = dd->vnic.rmt_start,
+ .offset = rmt_start,
.pkt_type = IB_PACKET_TYPE,
.field1_off = LRH_BTH_MATCH_OFFSET,
.mask1 = LRH_BTH_MASK,
@@ -14627,10 +14624,10 @@ void hfi1_init_aip_rsm(struct hfi1_devdata *dd)
.mask2 = BTH_DESTQP_MASK,
.value2 = BTH_DESTQP_VALUE,
.index1_off = DETH_AIP_SQPN_SELECT_OFFSET +
- ilog2(NUM_VNIC_MAP_ENTRIES),
- .index1_width = ilog2(NUM_VNIC_MAP_ENTRIES),
+ ilog2(NUM_NETDEV_MAP_ENTRIES),
+ .index1_width = ilog2(NUM_NETDEV_MAP_ENTRIES),
.index2_off = DETH_AIP_SQPN_SELECT_OFFSET,
- .index2_width = ilog2(NUM_VNIC_MAP_ENTRIES)
+ .index2_width = ilog2(NUM_NETDEV_MAP_ENTRIES)
};
hfi1_enable_rsm_rule(dd, RSM_INS_AIP, &rrd);
@@ -14640,9 +14637,10 @@ void hfi1_init_aip_rsm(struct hfi1_devdata *dd)
/* Initialize RSM for VNIC */
void hfi1_init_vnic_rsm(struct hfi1_devdata *dd)
{
+ int rmt_start = hfi1_netdev_get_free_rmt_idx(dd);
struct rsm_rule_data rrd = {
/* Add rule for vnic */
- .offset = dd->vnic.rmt_start,
+ .offset = rmt_start,
.pkt_type = 4,
/* Match 16B packets */
.field1_off = L2_TYPE_MATCH_OFFSET,
@@ -14654,9 +14652,9 @@ void hfi1_init_vnic_rsm(struct hfi1_devdata *dd)
.value2 = L4_16B_ETH_VALUE,
/* Calc context from veswid and entropy */
.index1_off = L4_16B_HDR_VESWID_OFFSET,
- .index1_width = ilog2(NUM_VNIC_MAP_ENTRIES),
+ .index1_width = ilog2(NUM_NETDEV_MAP_ENTRIES),
.index2_off = L2_16B_ENTROPY_OFFSET,
- .index2_width = ilog2(NUM_VNIC_MAP_ENTRIES)
+ .index2_width = ilog2(NUM_NETDEV_MAP_ENTRIES)
};
hfi1_enable_rsm_rule(dd, RSM_INS_VNIC, &rrd);
@@ -14690,8 +14688,8 @@ static int init_rxe(struct hfi1_devdata *dd)
init_qos(dd, rmt);
init_fecn_handling(dd, rmt);
complete_rsm_map_table(dd, rmt);
- /* record number of used rsm map entries for vnic */
- dd->vnic.rmt_start = rmt->used;
+ /* record number of used rsm map entries for netdev */
+ hfi1_netdev_set_free_rmt_idx(dd, rmt->used);
kfree(rmt);
/*
@@ -15245,6 +15243,10 @@ int hfi1_init_dd(struct hfi1_devdata *dd)
(dd->revision >> CCE_REVISION_SW_SHIFT)
& CCE_REVISION_SW_MASK);
+ /* alloc netdev data */
+ if (hfi1_netdev_alloc(dd))
+ goto bail_cleanup;
+
ret = set_up_context_variables(dd);
if (ret)
goto bail_cleanup;
@@ -15345,6 +15347,7 @@ int hfi1_init_dd(struct hfi1_devdata *dd)
hfi1_comp_vectors_clean_up(dd);
msix_clean_up_interrupts(dd);
bail_cleanup:
+ hfi1_netdev_free(dd);
hfi1_pcie_ddcleanup(dd);
bail_free:
hfi1_free_devdata(dd);
diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c
index d89fc8f..60ff6de 100644
--- a/drivers/infiniband/hw/hfi1/driver.c
+++ b/drivers/infiniband/hw/hfi1/driver.c
@@ -1771,28 +1771,10 @@ static void process_receive_ib(struct hfi1_packet *packet)
hfi1_ib_rcv(packet);
}
-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_16B_get_l2(packet->ebuf) == OPA_16B_L2_TYPE) &&
- (hfi1_16B_get_l4(packet->ebuf) == OPA_16B_L4_ETHR))
- return true;
-
- return false;
-}
-
static void process_receive_bypass(struct hfi1_packet *packet)
{
struct hfi1_devdata *dd = packet->rcd->dd;
- if (hfi1_is_vnic_packet(packet)) {
- hfi1_vnic_bypass_rcv(packet);
- return;
- }
-
if (hfi1_setup_bypass_packet(packet))
return;
diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h
index 986d8c3..b4c6bff 100644
--- a/drivers/infiniband/hw/hfi1/hfi.h
+++ b/drivers/infiniband/hw/hfi1/hfi.h
@@ -1047,23 +1047,10 @@ struct hfi1_asic_data {
#define NUM_MAP_ENTRIES 256
#define NUM_MAP_REGS 32
-/*
- * Number of VNIC contexts used. Ensure it is less than or equal to
- * max queues supported by VNIC (HFI1_VNIC_MAX_QUEUE).
- */
-#define HFI1_NUM_VNIC_CTXT 8
-
-/* Number of VNIC RSM entries */
-#define NUM_VNIC_MAP_ENTRIES 8
-
/* Virtual NIC information */
struct hfi1_vnic_data {
- struct hfi1_ctxtdata *ctxt[HFI1_NUM_VNIC_CTXT];
struct kmem_cache *txreq_cache;
- struct xarray vesws;
u8 num_vports;
- u8 rmt_start;
- u8 num_ctxt;
};
struct hfi1_vnic_vport_info;
@@ -1419,6 +1406,7 @@ struct hfi1_devdata {
struct hfi1_vnic_data vnic;
/* Lock to protect IRQ SRC register access */
spinlock_t irq_src_lock;
+ int vnic_num_vports;
struct net_device *dummy_netdev;
/* Keeps track of IPoIB RSM rule users */
diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c
index 64279d0..5eed436 100644
--- a/drivers/infiniband/hw/hfi1/init.c
+++ b/drivers/infiniband/hw/hfi1/init.c
@@ -69,6 +69,7 @@
#include "affinity.h"
#include "vnic.h"
#include "exp_rcv.h"
+#include "netdev.h"
#undef pr_fmt
#define pr_fmt(fmt) DRIVER_NAME ": " fmt
@@ -1665,9 +1666,6 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
/* do the generic initialization */
initfail = hfi1_init(dd, 0);
- /* setup vnic */
- hfi1_vnic_setup(dd);
-
ret = hfi1_register_ib_device(dd);
/*
@@ -1706,7 +1704,6 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
hfi1_device_remove(dd);
if (!ret)
hfi1_unregister_ib_device(dd);
- hfi1_vnic_cleanup(dd);
postinit_cleanup(dd);
if (initfail)
ret = initfail;
@@ -1751,8 +1748,8 @@ static void remove_one(struct pci_dev *pdev)
/* unregister from IB core */
hfi1_unregister_ib_device(dd);
- /* cleanup vnic */
- hfi1_vnic_cleanup(dd);
+ /* free netdev data */
+ hfi1_netdev_free(dd);
/*
* Disable the IB link, disable interrupts on the device,
diff --git a/drivers/infiniband/hw/hfi1/ipoib_rx.c b/drivers/infiniband/hw/hfi1/ipoib_rx.c
index 606ac69..3afa754 100644
--- a/drivers/infiniband/hw/hfi1/ipoib_rx.c
+++ b/drivers/infiniband/hw/hfi1/ipoib_rx.c
@@ -74,8 +74,15 @@ int hfi1_ipoib_rxq_init(struct net_device *netdev)
{
struct hfi1_ipoib_dev_priv *ipoib_priv = hfi1_ipoib_priv(netdev);
struct hfi1_devdata *dd = ipoib_priv->dd;
+ int ret;
- return hfi1_netdev_rx_init(dd);
+ ret = hfi1_netdev_rx_init(dd);
+ if (ret)
+ return ret;
+
+ hfi1_init_aip_rsm(dd);
+
+ return ret;
}
void hfi1_ipoib_rxq_deinit(struct net_device *netdev)
@@ -83,5 +90,6 @@ void hfi1_ipoib_rxq_deinit(struct net_device *netdev)
struct hfi1_ipoib_dev_priv *ipoib_priv = hfi1_ipoib_priv(netdev);
struct hfi1_devdata *dd = ipoib_priv->dd;
+ hfi1_deinit_aip_rsm(dd);
hfi1_netdev_rx_destroy(dd);
}
diff --git a/drivers/infiniband/hw/hfi1/msix.c b/drivers/infiniband/hw/hfi1/msix.c
index 7559875e..d61ee85 100644
--- a/drivers/infiniband/hw/hfi1/msix.c
+++ b/drivers/infiniband/hw/hfi1/msix.c
@@ -172,7 +172,8 @@ static int msix_request_rcd_irq_common(struct hfi1_ctxtdata *rcd,
const char *name)
{
int nr = msix_request_irq(rcd->dd, rcd, handler, thread,
- IRQ_RCVCTXT, name);
+ rcd->is_vnic ? IRQ_NETDEVCTXT : IRQ_RCVCTXT,
+ name);
if (nr < 0)
return nr;
@@ -371,15 +372,16 @@ void msix_clean_up_interrupts(struct hfi1_devdata *dd)
}
/**
- * msix_vnic_syncrhonize_irq() - Vnic IRQ synchronize
+ * msix_netdev_syncrhonize_irq() - netdev IRQ synchronize
* @dd: valid devdata
*/
-void msix_vnic_synchronize_irq(struct hfi1_devdata *dd)
+void msix_netdev_synchronize_irq(struct hfi1_devdata *dd)
{
int i;
+ int ctxt_count = hfi1_netdev_ctxt_count(dd);
- for (i = 0; i < dd->vnic.num_ctxt; i++) {
- struct hfi1_ctxtdata *rcd = dd->vnic.ctxt[i];
+ for (i = 0; i < ctxt_count; i++) {
+ struct hfi1_ctxtdata *rcd = hfi1_netdev_get_ctxt(dd, i);
struct hfi1_msix_entry *me;
me = &dd->msix_info.msix_entries[rcd->msix_intr];
diff --git a/drivers/infiniband/hw/hfi1/msix.h b/drivers/infiniband/hw/hfi1/msix.h
index 42fab94..e63e944 100644
--- a/drivers/infiniband/hw/hfi1/msix.h
+++ b/drivers/infiniband/hw/hfi1/msix.h
@@ -60,7 +60,7 @@
void msix_free_irq(struct hfi1_devdata *dd, u8 msix_intr);
/* Netdev interface */
-void msix_vnic_synchronize_irq(struct hfi1_devdata *dd);
+void msix_netdev_synchronize_irq(struct hfi1_devdata *dd);
int msix_netdev_request_rcd_irq(struct hfi1_ctxtdata *rcd);
#endif
diff --git a/drivers/infiniband/hw/hfi1/netdev.h b/drivers/infiniband/hw/hfi1/netdev.h
index edb936f..947543a 100644
--- a/drivers/infiniband/hw/hfi1/netdev.h
+++ b/drivers/infiniband/hw/hfi1/netdev.h
@@ -82,6 +82,25 @@ struct hfi1_ctxtdata *hfi1_netdev_get_ctxt(struct hfi1_devdata *dd, int ctxt)
return priv->rxq[ctxt].rcd;
}
+static inline
+int hfi1_netdev_get_free_rmt_idx(struct hfi1_devdata *dd)
+{
+ struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
+
+ return priv->rmt_start;
+}
+
+static inline
+void hfi1_netdev_set_free_rmt_idx(struct hfi1_devdata *dd, int rmt_idx)
+{
+ struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
+
+ priv->rmt_start = rmt_idx;
+}
+
+u32 hfi1_num_netdev_contexts(struct hfi1_devdata *dd, u32 available_contexts,
+ struct cpumask *cpu_mask);
+
void hfi1_netdev_enable_queues(struct hfi1_devdata *dd);
void hfi1_netdev_disable_queues(struct hfi1_devdata *dd);
int hfi1_netdev_rx_init(struct hfi1_devdata *dd);
diff --git a/drivers/infiniband/hw/hfi1/netdev_rx.c b/drivers/infiniband/hw/hfi1/netdev_rx.c
index 124e4e8..58af6a4 100644
--- a/drivers/infiniband/hw/hfi1/netdev_rx.c
+++ b/drivers/infiniband/hw/hfi1/netdev_rx.c
@@ -140,6 +140,50 @@ static int hfi1_netdev_allot_ctxt(struct hfi1_netdev_priv *priv,
return rc;
}
+/**
+ * hfi1_num_netdev_contexts - Count of netdev recv contexts to use.
+ * @dd: device on which to allocate netdev contexts
+ * @available_contexts: count of available receive contexts
+ * @cpu_mask: mask of possible cpus to include for contexts
+ *
+ * Return: count of physical cores on a node or the remaining available recv
+ * contexts for netdev recv context usage up to the maximum of
+ * HFI1_MAX_NETDEV_CTXTS.
+ * A value of 0 can be returned when acceleration is explicitly turned off,
+ * a memory allocation error occurs or when there are no available contexts.
+ *
+ */
+u32 hfi1_num_netdev_contexts(struct hfi1_devdata *dd, u32 available_contexts,
+ struct cpumask *cpu_mask)
+{
+ cpumask_var_t node_cpu_mask;
+ unsigned int available_cpus;
+
+ if (!HFI1_CAP_IS_KSET(AIP))
+ return 0;
+
+ /* Always give user contexts priority over netdev contexts */
+ if (available_contexts == 0) {
+ dd_dev_info(dd, "No receive contexts available for netdevs.\n");
+ return 0;
+ }
+
+ if (!zalloc_cpumask_var(&node_cpu_mask, GFP_KERNEL)) {
+ dd_dev_err(dd, "Unable to allocate cpu_mask for netdevs.\n");
+ return 0;
+ }
+
+ cpumask_and(node_cpu_mask, cpu_mask,
+ cpumask_of_node(pcibus_to_node(dd->pcidev->bus)));
+
+ available_cpus = cpumask_weight(node_cpu_mask);
+
+ free_cpumask_var(node_cpu_mask);
+
+ return min3(available_cpus, available_contexts,
+ (u32)HFI1_MAX_NETDEV_CTXTS);
+}
+
static int hfi1_netdev_rxq_init(struct net_device *dev)
{
int i;
@@ -238,7 +282,7 @@ static void disable_queues(struct hfi1_netdev_priv *priv)
{
int i;
- msix_vnic_synchronize_irq(priv->dd);
+ msix_netdev_synchronize_irq(priv->dd);
for (i = 0; i < priv->num_rx_q; i++) {
struct hfi1_netdev_rxq *rxq = &priv->rxq[i];
diff --git a/drivers/infiniband/hw/hfi1/vnic.h b/drivers/infiniband/hw/hfi1/vnic.h
index 5ae7815..66150a13 100644
--- a/drivers/infiniband/hw/hfi1/vnic.h
+++ b/drivers/infiniband/hw/hfi1/vnic.h
@@ -1,7 +1,7 @@
#ifndef _HFI1_VNIC_H
#define _HFI1_VNIC_H
/*
- * Copyright(c) 2017 Intel Corporation.
+ * Copyright(c) 2017 - 2020 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.
@@ -69,6 +69,7 @@
#define HFI1_VNIC_SC_SHIFT 4
#define HFI1_VNIC_MAX_QUEUE 16
+#define HFI1_NUM_VNIC_CTXT 8
/**
* struct hfi1_vnic_sdma - VNIC per Tx ring SDMA information
@@ -104,7 +105,6 @@ struct hfi1_vnic_rx_queue {
struct hfi1_vnic_vport_info *vinfo;
struct net_device *netdev;
struct napi_struct napi;
- struct sk_buff_head skbq;
};
/**
@@ -146,7 +146,6 @@ struct hfi1_vnic_vport_info {
/* vnic hfi1 internal functions */
void hfi1_vnic_setup(struct hfi1_devdata *dd);
-void hfi1_vnic_cleanup(struct hfi1_devdata *dd);
int hfi1_vnic_txreq_init(struct hfi1_devdata *dd);
void hfi1_vnic_txreq_deinit(struct hfi1_devdata *dd);
diff --git a/drivers/infiniband/hw/hfi1/vnic_main.c b/drivers/infiniband/hw/hfi1/vnic_main.c
index db7624c..b183c56 100644
--- a/drivers/infiniband/hw/hfi1/vnic_main.c
+++ b/drivers/infiniband/hw/hfi1/vnic_main.c
@@ -53,6 +53,7 @@
#include <linux/if_vlan.h>
#include "vnic.h"
+#include "netdev.h"
#define HFI_TX_TIMEOUT_MS 1000
@@ -62,114 +63,6 @@
static DEFINE_SPINLOCK(vport_cntr_lock);
-static int setup_vnic_ctxt(struct hfi1_devdata *dd, struct hfi1_ctxtdata *uctxt)
-{
- unsigned int rcvctrl_ops = 0;
- int ret;
-
- uctxt->do_interrupt = &handle_receive_interrupt;
-
- /* Now allocate the RcvHdr queue and eager buffers. */
- ret = hfi1_create_rcvhdrq(dd, uctxt);
- if (ret)
- goto done;
-
- ret = hfi1_setup_eagerbufs(uctxt);
- if (ret)
- goto done;
-
- if (hfi1_rcvhdrtail_kvaddr(uctxt))
- clear_rcvhdrtail(uctxt);
-
- rcvctrl_ops = HFI1_RCVCTRL_CTXT_ENB;
- rcvctrl_ops |= HFI1_RCVCTRL_INTRAVAIL_ENB;
-
- if (!HFI1_CAP_KGET_MASK(uctxt->flags, MULTI_PKT_EGR))
- rcvctrl_ops |= HFI1_RCVCTRL_ONE_PKT_EGR_ENB;
- if (HFI1_CAP_KGET_MASK(uctxt->flags, NODROP_EGR_FULL))
- rcvctrl_ops |= HFI1_RCVCTRL_NO_EGR_DROP_ENB;
- if (HFI1_CAP_KGET_MASK(uctxt->flags, NODROP_RHQ_FULL))
- rcvctrl_ops |= HFI1_RCVCTRL_NO_RHQ_DROP_ENB;
- if (HFI1_CAP_KGET_MASK(uctxt->flags, DMA_RTAIL))
- rcvctrl_ops |= HFI1_RCVCTRL_TAILUPD_ENB;
-
- hfi1_rcvctrl(uctxt->dd, rcvctrl_ops, uctxt);
-done:
- return ret;
-}
-
-static int allocate_vnic_ctxt(struct hfi1_devdata *dd,
- struct hfi1_ctxtdata **vnic_ctxt)
-{
- struct hfi1_ctxtdata *uctxt;
- int ret;
-
- if (dd->flags & HFI1_FROZEN)
- return -EIO;
-
- ret = hfi1_create_ctxtdata(dd->pport, dd->node, &uctxt);
- if (ret < 0) {
- dd_dev_err(dd, "Unable to create ctxtdata, failing open\n");
- return -ENOMEM;
- }
-
- uctxt->flags = HFI1_CAP_KGET(MULTI_PKT_EGR) |
- HFI1_CAP_KGET(NODROP_RHQ_FULL) |
- HFI1_CAP_KGET(NODROP_EGR_FULL) |
- HFI1_CAP_KGET(DMA_RTAIL);
- uctxt->seq_cnt = 1;
- uctxt->is_vnic = true;
-
- msix_request_rcd_irq(uctxt);
-
- hfi1_stats.sps_ctxts++;
- dd_dev_dbg(dd, "created vnic context %d\n", uctxt->ctxt);
- *vnic_ctxt = uctxt;
-
- return 0;
-}
-
-static void deallocate_vnic_ctxt(struct hfi1_devdata *dd,
- struct hfi1_ctxtdata *uctxt)
-{
- dd_dev_dbg(dd, "closing vnic context %d\n", uctxt->ctxt);
- flush_wc();
-
- /*
- * Disable receive context and interrupt available, reset all
- * RcvCtxtCtrl bits to default values.
- */
- hfi1_rcvctrl(dd, HFI1_RCVCTRL_CTXT_DIS |
- HFI1_RCVCTRL_TIDFLOW_DIS |
- HFI1_RCVCTRL_INTRAVAIL_DIS |
- HFI1_RCVCTRL_ONE_PKT_EGR_DIS |
- HFI1_RCVCTRL_NO_RHQ_DROP_DIS |
- HFI1_RCVCTRL_NO_EGR_DROP_DIS, uctxt);
-
- /* msix_intr will always be > 0, only clean up if this is true */
- if (uctxt->msix_intr)
- msix_free_irq(dd, uctxt->msix_intr);
-
- uctxt->event_flags = 0;
-
- hfi1_clear_tids(uctxt);
- hfi1_clear_ctxt_pkey(dd, uctxt);
-
- hfi1_stats.sps_ctxts--;
-
- hfi1_free_ctxt(uctxt);
-}
-
-void hfi1_vnic_setup(struct hfi1_devdata *dd)
-{
- xa_init(&dd->vnic.vesws);
-}
-
-void hfi1_vnic_cleanup(struct hfi1_devdata *dd)
-{
- WARN_ON(!xa_empty(&dd->vnic.vesws));
-}
-
#define SUM_GRP_COUNTERS(stats, qstats, x_grp) do { \
u64 *src64, *dst64; \
for (src64 = &qstats->x_grp.unicast, \
@@ -179,6 +72,9 @@ void hfi1_vnic_cleanup(struct hfi1_devdata *dd)
} \
} while (0)
+#define VNIC_MASK (0xFF)
+#define VNIC_ID(val) ((1ull << 24) | ((val) & VNIC_MASK))
+
/* hfi1_vnic_update_stats - update statistics */
static void hfi1_vnic_update_stats(struct hfi1_vnic_vport_info *vinfo,
struct opa_vnic_stats *stats)
@@ -454,71 +350,25 @@ static inline int hfi1_vnic_decap_skb(struct hfi1_vnic_rx_queue *rxq,
return rc;
}
-static inline struct sk_buff *hfi1_vnic_get_skb(struct hfi1_vnic_rx_queue *rxq)
+static struct hfi1_vnic_vport_info *get_vnic_port(struct hfi1_devdata *dd,
+ int vesw_id)
{
- unsigned char *pad_info;
- struct sk_buff *skb;
-
- skb = skb_dequeue(&rxq->skbq);
- if (unlikely(!skb))
- return NULL;
+ int vnic_id = VNIC_ID(vesw_id);
- /* remove tail padding and icrc */
- pad_info = skb->data + skb->len - 1;
- skb_trim(skb, (skb->len - OPA_VNIC_ICRC_TAIL_LEN -
- ((*pad_info) & 0x7)));
-
- return skb;
+ return hfi1_netdev_get_data(dd, vnic_id);
}
-/* hfi1_vnic_handle_rx - handle skb receive */
-static void hfi1_vnic_handle_rx(struct hfi1_vnic_rx_queue *rxq,
- int *work_done, int work_to_do)
+static struct hfi1_vnic_vport_info *get_first_vnic_port(struct hfi1_devdata *dd)
{
- struct hfi1_vnic_vport_info *vinfo = rxq->vinfo;
- struct sk_buff *skb;
- int rc;
-
- while (1) {
- if (*work_done >= work_to_do)
- break;
-
- skb = hfi1_vnic_get_skb(rxq);
- if (unlikely(!skb))
- break;
-
- rc = hfi1_vnic_decap_skb(rxq, skb);
- /* update rx counters */
- hfi1_vnic_update_rx_counters(vinfo, rxq->idx, skb, rc);
- if (unlikely(rc)) {
- dev_kfree_skb_any(skb);
- continue;
- }
-
- skb_checksum_none_assert(skb);
- skb->protocol = eth_type_trans(skb, rxq->netdev);
-
- napi_gro_receive(&rxq->napi, skb);
- (*work_done)++;
- }
-}
-
-/* hfi1_vnic_napi - napi receive polling callback function */
-static int hfi1_vnic_napi(struct napi_struct *napi, int budget)
-{
- struct hfi1_vnic_rx_queue *rxq = container_of(napi,
- struct hfi1_vnic_rx_queue, napi);
- struct hfi1_vnic_vport_info *vinfo = rxq->vinfo;
- int work_done = 0;
+ struct hfi1_vnic_vport_info *vinfo;
+ int next_id = VNIC_ID(0);
- v_dbg("napi %d budget %d\n", rxq->idx, budget);
- hfi1_vnic_handle_rx(rxq, &work_done, budget);
+ vinfo = hfi1_netdev_get_first_data(dd, &next_id);
- v_dbg("napi %d work_done %d\n", rxq->idx, work_done);
- if (work_done < budget)
- napi_complete(napi);
+ if (next_id > VNIC_ID(VNIC_MASK))
+ return NULL;
- return work_done;
+ return vinfo;
}
void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet)
@@ -527,13 +377,14 @@ void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet)
struct hfi1_vnic_vport_info *vinfo = NULL;
struct hfi1_vnic_rx_queue *rxq;
struct sk_buff *skb;
- int l4_type, vesw_id = -1;
+ int l4_type, vesw_id = -1, rc;
u8 q_idx;
+ unsigned char *pad_info;
l4_type = hfi1_16B_get_l4(packet->ebuf);
if (likely(l4_type == OPA_16B_L4_ETHR)) {
vesw_id = HFI1_VNIC_GET_VESWID(packet->ebuf);
- vinfo = xa_load(&dd->vnic.vesws, vesw_id);
+ vinfo = get_vnic_port(dd, vesw_id);
/*
* In case of invalid vesw id, count the error on
@@ -541,10 +392,8 @@ void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet)
*/
if (unlikely(!vinfo)) {
struct hfi1_vnic_vport_info *vinfo_tmp;
- unsigned long index = 0;
- vinfo_tmp = xa_find(&dd->vnic.vesws, &index, ULONG_MAX,
- XA_PRESENT);
+ vinfo_tmp = get_first_vnic_port(dd);
if (vinfo_tmp) {
spin_lock(&vport_cntr_lock);
vinfo_tmp->stats[0].netstats.rx_nohandler++;
@@ -563,12 +412,6 @@ void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet)
rxq = &vinfo->rxq[q_idx];
if (unlikely(!netif_oper_up(vinfo->netdev))) {
vinfo->stats[q_idx].rx_drop_state++;
- skb_queue_purge(&rxq->skbq);
- return;
- }
-
- if (unlikely(skb_queue_len(&rxq->skbq) > HFI1_VNIC_RCV_Q_SIZE)) {
- vinfo->stats[q_idx].netstats.rx_fifo_errors++;
return;
}
@@ -580,34 +423,41 @@ void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet)
memcpy(skb->data, packet->ebuf, packet->tlen);
skb_put(skb, packet->tlen);
- skb_queue_tail(&rxq->skbq, skb);
- if (napi_schedule_prep(&rxq->napi)) {
- v_dbg("napi %d scheduling\n", q_idx);
- __napi_schedule(&rxq->napi);
+ pad_info = skb->data + skb->len - 1;
+ skb_trim(skb, (skb->len - OPA_VNIC_ICRC_TAIL_LEN -
+ ((*pad_info) & 0x7)));
+
+ rc = hfi1_vnic_decap_skb(rxq, skb);
+
+ /* update rx counters */
+ hfi1_vnic_update_rx_counters(vinfo, rxq->idx, skb, rc);
+ if (unlikely(rc)) {
+ dev_kfree_skb_any(skb);
+ return;
}
+
+ skb_checksum_none_assert(skb);
+ skb->protocol = eth_type_trans(skb, rxq->netdev);
+
+ napi_gro_receive(&rxq->napi, skb);
}
static int hfi1_vnic_up(struct hfi1_vnic_vport_info *vinfo)
{
struct hfi1_devdata *dd = vinfo->dd;
struct net_device *netdev = vinfo->netdev;
- int i, rc;
+ int rc;
/* ensure virtual eth switch id is valid */
if (!vinfo->vesw_id)
return -EINVAL;
- rc = xa_insert(&dd->vnic.vesws, vinfo->vesw_id, vinfo, GFP_KERNEL);
+ rc = hfi1_netdev_add_data(dd, VNIC_ID(vinfo->vesw_id), vinfo);
if (rc < 0)
return rc;
- for (i = 0; i < vinfo->num_rx_q; i++) {
- struct hfi1_vnic_rx_queue *rxq = &vinfo->rxq[i];
-
- skb_queue_head_init(&rxq->skbq);
- napi_enable(&rxq->napi);
- }
+ hfi1_netdev_rx_init(dd);
netif_carrier_on(netdev);
netif_tx_start_all_queues(netdev);
@@ -619,23 +469,13 @@ static int hfi1_vnic_up(struct hfi1_vnic_vport_info *vinfo)
static void hfi1_vnic_down(struct hfi1_vnic_vport_info *vinfo)
{
struct hfi1_devdata *dd = vinfo->dd;
- u8 i;
clear_bit(HFI1_VNIC_UP, &vinfo->flags);
netif_carrier_off(vinfo->netdev);
netif_tx_disable(vinfo->netdev);
- xa_erase(&dd->vnic.vesws, vinfo->vesw_id);
+ hfi1_netdev_remove_data(dd, VNIC_ID(vinfo->vesw_id));
- /* ensure irqs see the change */
- msix_vnic_synchronize_irq(dd);
-
- /* remove unread skbs */
- for (i = 0; i < vinfo->num_rx_q; i++) {
- struct hfi1_vnic_rx_queue *rxq = &vinfo->rxq[i];
-
- napi_disable(&rxq->napi);
- skb_queue_purge(&rxq->skbq);
- }
+ hfi1_netdev_rx_destroy(dd);
}
static int hfi1_netdev_open(struct net_device *netdev)
@@ -660,70 +500,30 @@ static int hfi1_netdev_close(struct net_device *netdev)
return 0;
}
-static int hfi1_vnic_allot_ctxt(struct hfi1_devdata *dd,
- struct hfi1_ctxtdata **vnic_ctxt)
-{
- int rc;
-
- rc = allocate_vnic_ctxt(dd, vnic_ctxt);
- if (rc) {
- dd_dev_err(dd, "vnic ctxt alloc failed %d\n", rc);
- return rc;
- }
-
- rc = setup_vnic_ctxt(dd, *vnic_ctxt);
- if (rc) {
- dd_dev_err(dd, "vnic ctxt setup failed %d\n", rc);
- deallocate_vnic_ctxt(dd, *vnic_ctxt);
- *vnic_ctxt = NULL;
- }
-
- return rc;
-}
-
static int hfi1_vnic_init(struct hfi1_vnic_vport_info *vinfo)
{
struct hfi1_devdata *dd = vinfo->dd;
- int i, rc = 0;
+ int rc = 0;
mutex_lock(&hfi1_mutex);
- if (!dd->vnic.num_vports) {
+ if (!dd->vnic_num_vports) {
rc = hfi1_vnic_txreq_init(dd);
if (rc)
goto txreq_fail;
}
- for (i = dd->vnic.num_ctxt; i < vinfo->num_rx_q; i++) {
- rc = hfi1_vnic_allot_ctxt(dd, &dd->vnic.ctxt[i]);
- if (rc)
- break;
- hfi1_rcd_get(dd->vnic.ctxt[i]);
- dd->vnic.ctxt[i]->vnic_q_idx = i;
- }
-
- if (i < vinfo->num_rx_q) {
- /*
- * If required amount of contexts is not
- * allocated successfully then remaining contexts
- * are released.
- */
- while (i-- > dd->vnic.num_ctxt) {
- deallocate_vnic_ctxt(dd, dd->vnic.ctxt[i]);
- hfi1_rcd_put(dd->vnic.ctxt[i]);
- dd->vnic.ctxt[i] = NULL;
- }
+ if (hfi1_netdev_rx_init(dd)) {
+ dd_dev_err(dd, "Unable to initialize netdev contexts\n");
goto alloc_fail;
}
- if (dd->vnic.num_ctxt != i) {
- dd->vnic.num_ctxt = i;
- hfi1_init_vnic_rsm(dd);
- }
+ hfi1_init_vnic_rsm(dd);
- dd->vnic.num_vports++;
+ dd->vnic_num_vports++;
hfi1_vnic_sdma_init(vinfo);
+
alloc_fail:
- if (!dd->vnic.num_vports)
+ if (!dd->vnic_num_vports)
hfi1_vnic_txreq_deinit(dd);
txreq_fail:
mutex_unlock(&hfi1_mutex);
@@ -733,20 +533,14 @@ static int hfi1_vnic_init(struct hfi1_vnic_vport_info *vinfo)
static void hfi1_vnic_deinit(struct hfi1_vnic_vport_info *vinfo)
{
struct hfi1_devdata *dd = vinfo->dd;
- int i;
mutex_lock(&hfi1_mutex);
- if (--dd->vnic.num_vports == 0) {
- for (i = 0; i < dd->vnic.num_ctxt; i++) {
- deallocate_vnic_ctxt(dd, dd->vnic.ctxt[i]);
- hfi1_rcd_put(dd->vnic.ctxt[i]);
- dd->vnic.ctxt[i] = NULL;
- }
+ if (--dd->vnic_num_vports == 0) {
hfi1_deinit_vnic_rsm(dd);
- dd->vnic.num_ctxt = 0;
hfi1_vnic_txreq_deinit(dd);
}
mutex_unlock(&hfi1_mutex);
+ hfi1_netdev_rx_destroy(dd);
}
static void hfi1_vnic_set_vesw_id(struct net_device *netdev, int id)
@@ -815,14 +609,15 @@ struct net_device *hfi1_vnic_alloc_rn(struct ib_device *device,
size = sizeof(struct opa_vnic_rdma_netdev) + sizeof(*vinfo);
netdev = alloc_netdev_mqs(size, name, name_assign_type, setup,
- dd->num_sdma, dd->num_netdev_contexts);
+ chip_sdma_engines(dd),
+ dd->num_netdev_contexts);
if (!netdev)
return ERR_PTR(-ENOMEM);
rn = netdev_priv(netdev);
vinfo = opa_vnic_dev_priv(netdev);
vinfo->dd = dd;
- vinfo->num_tx_q = dd->num_sdma;
+ vinfo->num_tx_q = chip_sdma_engines(dd);
vinfo->num_rx_q = dd->num_netdev_contexts;
vinfo->netdev = netdev;
rn->free_rdma_netdev = hfi1_vnic_free_rn;
@@ -841,7 +636,6 @@ struct net_device *hfi1_vnic_alloc_rn(struct ib_device *device,
rxq->idx = i;
rxq->vinfo = vinfo;
rxq->netdev = netdev;
- netif_napi_add(netdev, &rxq->napi, hfi1_vnic_napi, 64);
}
rc = hfi1_vnic_init(vinfo);
