You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
892 lines
24 KiB
892 lines
24 KiB
/*
|
|
* Copyright(c) 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.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* - Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* This file contains HFI1 support for VNIC functionality
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/if_vlan.h>
|
|
|
|
#include "vnic.h"
|
|
|
|
#define HFI_TX_TIMEOUT_MS 1000
|
|
|
|
#define HFI1_VNIC_RCV_Q_SIZE 1024
|
|
|
|
#define HFI1_VNIC_UP 0
|
|
|
|
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;
|
|
|
|
hfi1_init_ctxt(uctxt->sc);
|
|
|
|
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 (uctxt->rcvhdrtail_kvaddr)
|
|
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);
|
|
|
|
uctxt->is_vnic = true;
|
|
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;
|
|
|
|
/* Allocate and enable a PIO send context */
|
|
uctxt->sc = sc_alloc(dd, SC_VNIC, uctxt->rcvhdrqentsize,
|
|
uctxt->numa_id);
|
|
|
|
ret = uctxt->sc ? 0 : -ENOMEM;
|
|
if (ret)
|
|
goto bail;
|
|
|
|
dd_dev_dbg(dd, "allocated vnic send context %u(%u)\n",
|
|
uctxt->sc->sw_index, uctxt->sc->hw_context);
|
|
ret = sc_enable(uctxt->sc);
|
|
if (ret)
|
|
goto bail;
|
|
|
|
if (dd->num_msix_entries)
|
|
hfi1_set_vnic_msix_info(uctxt);
|
|
|
|
hfi1_stats.sps_ctxts++;
|
|
dd_dev_dbg(dd, "created vnic context %d\n", uctxt->ctxt);
|
|
*vnic_ctxt = uctxt;
|
|
|
|
return ret;
|
|
bail:
|
|
hfi1_free_ctxt(uctxt);
|
|
dd_dev_dbg(dd, "vnic allocation failed. rc %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
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();
|
|
|
|
if (dd->num_msix_entries)
|
|
hfi1_reset_vnic_msix_info(uctxt);
|
|
|
|
/*
|
|
* 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);
|
|
/*
|
|
* VNIC contexts are allocated from user context pool.
|
|
* Release them back to user context pool.
|
|
*
|
|
* Reset context integrity checks to default.
|
|
* (writes to CSRs probably belong in chip.c)
|
|
*/
|
|
write_kctxt_csr(dd, uctxt->sc->hw_context, SEND_CTXT_CHECK_ENABLE,
|
|
hfi1_pkt_default_send_ctxt_mask(dd, SC_USER));
|
|
sc_disable(uctxt->sc);
|
|
|
|
dd->send_contexts[uctxt->sc->sw_index].type = SC_USER;
|
|
|
|
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)
|
|
{
|
|
idr_init(&dd->vnic.vesw_idr);
|
|
}
|
|
|
|
void hfi1_vnic_cleanup(struct hfi1_devdata *dd)
|
|
{
|
|
idr_destroy(&dd->vnic.vesw_idr);
|
|
}
|
|
|
|
#define SUM_GRP_COUNTERS(stats, qstats, x_grp) do { \
|
|
u64 *src64, *dst64; \
|
|
for (src64 = &qstats->x_grp.unicast, \
|
|
dst64 = &stats->x_grp.unicast; \
|
|
dst64 <= &stats->x_grp.s_1519_max;) { \
|
|
*dst64++ += *src64++; \
|
|
} \
|
|
} while (0)
|
|
|
|
/* hfi1_vnic_update_stats - update statistics */
|
|
static void hfi1_vnic_update_stats(struct hfi1_vnic_vport_info *vinfo,
|
|
struct opa_vnic_stats *stats)
|
|
{
|
|
struct net_device *netdev = vinfo->netdev;
|
|
u8 i;
|
|
|
|
/* add tx counters on different queues */
|
|
for (i = 0; i < vinfo->num_tx_q; i++) {
|
|
struct opa_vnic_stats *qstats = &vinfo->stats[i];
|
|
struct rtnl_link_stats64 *qnstats = &vinfo->stats[i].netstats;
|
|
|
|
stats->netstats.tx_fifo_errors += qnstats->tx_fifo_errors;
|
|
stats->netstats.tx_carrier_errors += qnstats->tx_carrier_errors;
|
|
stats->tx_drop_state += qstats->tx_drop_state;
|
|
stats->tx_dlid_zero += qstats->tx_dlid_zero;
|
|
|
|
SUM_GRP_COUNTERS(stats, qstats, tx_grp);
|
|
stats->netstats.tx_packets += qnstats->tx_packets;
|
|
stats->netstats.tx_bytes += qnstats->tx_bytes;
|
|
}
|
|
|
|
/* add rx counters on different queues */
|
|
for (i = 0; i < vinfo->num_rx_q; i++) {
|
|
struct opa_vnic_stats *qstats = &vinfo->stats[i];
|
|
struct rtnl_link_stats64 *qnstats = &vinfo->stats[i].netstats;
|
|
|
|
stats->netstats.rx_fifo_errors += qnstats->rx_fifo_errors;
|
|
stats->netstats.rx_nohandler += qnstats->rx_nohandler;
|
|
stats->rx_drop_state += qstats->rx_drop_state;
|
|
stats->rx_oversize += qstats->rx_oversize;
|
|
stats->rx_runt += qstats->rx_runt;
|
|
|
|
SUM_GRP_COUNTERS(stats, qstats, rx_grp);
|
|
stats->netstats.rx_packets += qnstats->rx_packets;
|
|
stats->netstats.rx_bytes += qnstats->rx_bytes;
|
|
}
|
|
|
|
stats->netstats.tx_errors = stats->netstats.tx_fifo_errors +
|
|
stats->netstats.tx_carrier_errors +
|
|
stats->tx_drop_state + stats->tx_dlid_zero;
|
|
stats->netstats.tx_dropped = stats->netstats.tx_errors;
|
|
|
|
stats->netstats.rx_errors = stats->netstats.rx_fifo_errors +
|
|
stats->netstats.rx_nohandler +
|
|
stats->rx_drop_state + stats->rx_oversize +
|
|
stats->rx_runt;
|
|
stats->netstats.rx_dropped = stats->netstats.rx_errors;
|
|
|
|
netdev->stats.tx_packets = stats->netstats.tx_packets;
|
|
netdev->stats.tx_bytes = stats->netstats.tx_bytes;
|
|
netdev->stats.tx_fifo_errors = stats->netstats.tx_fifo_errors;
|
|
netdev->stats.tx_carrier_errors = stats->netstats.tx_carrier_errors;
|
|
netdev->stats.tx_errors = stats->netstats.tx_errors;
|
|
netdev->stats.tx_dropped = stats->netstats.tx_dropped;
|
|
|
|
netdev->stats.rx_packets = stats->netstats.rx_packets;
|
|
netdev->stats.rx_bytes = stats->netstats.rx_bytes;
|
|
netdev->stats.rx_fifo_errors = stats->netstats.rx_fifo_errors;
|
|
netdev->stats.multicast = stats->rx_grp.mcastbcast;
|
|
netdev->stats.rx_length_errors = stats->rx_oversize + stats->rx_runt;
|
|
netdev->stats.rx_errors = stats->netstats.rx_errors;
|
|
netdev->stats.rx_dropped = stats->netstats.rx_dropped;
|
|
}
|
|
|
|
/* update_len_counters - update pkt's len histogram counters */
|
|
static inline void update_len_counters(struct opa_vnic_grp_stats *grp,
|
|
int len)
|
|
{
|
|
/* account for 4 byte FCS */
|
|
if (len >= 1515)
|
|
grp->s_1519_max++;
|
|
else if (len >= 1020)
|
|
grp->s_1024_1518++;
|
|
else if (len >= 508)
|
|
grp->s_512_1023++;
|
|
else if (len >= 252)
|
|
grp->s_256_511++;
|
|
else if (len >= 124)
|
|
grp->s_128_255++;
|
|
else if (len >= 61)
|
|
grp->s_65_127++;
|
|
else
|
|
grp->s_64++;
|
|
}
|
|
|
|
/* hfi1_vnic_update_tx_counters - update transmit counters */
|
|
static void hfi1_vnic_update_tx_counters(struct hfi1_vnic_vport_info *vinfo,
|
|
u8 q_idx, struct sk_buff *skb, int err)
|
|
{
|
|
struct ethhdr *mac_hdr = (struct ethhdr *)skb_mac_header(skb);
|
|
struct opa_vnic_stats *stats = &vinfo->stats[q_idx];
|
|
struct opa_vnic_grp_stats *tx_grp = &stats->tx_grp;
|
|
u16 vlan_tci;
|
|
|
|
stats->netstats.tx_packets++;
|
|
stats->netstats.tx_bytes += skb->len + ETH_FCS_LEN;
|
|
|
|
update_len_counters(tx_grp, skb->len);
|
|
|
|
/* rest of the counts are for good packets only */
|
|
if (unlikely(err))
|
|
return;
|
|
|
|
if (is_multicast_ether_addr(mac_hdr->h_dest))
|
|
tx_grp->mcastbcast++;
|
|
else
|
|
tx_grp->unicast++;
|
|
|
|
if (!__vlan_get_tag(skb, &vlan_tci))
|
|
tx_grp->vlan++;
|
|
else
|
|
tx_grp->untagged++;
|
|
}
|
|
|
|
/* hfi1_vnic_update_rx_counters - update receive counters */
|
|
static void hfi1_vnic_update_rx_counters(struct hfi1_vnic_vport_info *vinfo,
|
|
u8 q_idx, struct sk_buff *skb, int err)
|
|
{
|
|
struct ethhdr *mac_hdr = (struct ethhdr *)skb->data;
|
|
struct opa_vnic_stats *stats = &vinfo->stats[q_idx];
|
|
struct opa_vnic_grp_stats *rx_grp = &stats->rx_grp;
|
|
u16 vlan_tci;
|
|
|
|
stats->netstats.rx_packets++;
|
|
stats->netstats.rx_bytes += skb->len + ETH_FCS_LEN;
|
|
|
|
update_len_counters(rx_grp, skb->len);
|
|
|
|
/* rest of the counts are for good packets only */
|
|
if (unlikely(err))
|
|
return;
|
|
|
|
if (is_multicast_ether_addr(mac_hdr->h_dest))
|
|
rx_grp->mcastbcast++;
|
|
else
|
|
rx_grp->unicast++;
|
|
|
|
if (!__vlan_get_tag(skb, &vlan_tci))
|
|
rx_grp->vlan++;
|
|
else
|
|
rx_grp->untagged++;
|
|
}
|
|
|
|
/* This function is overloaded for opa_vnic specific implementation */
|
|
static void hfi1_vnic_get_stats64(struct net_device *netdev,
|
|
struct rtnl_link_stats64 *stats)
|
|
{
|
|
struct opa_vnic_stats *vstats = (struct opa_vnic_stats *)stats;
|
|
struct hfi1_vnic_vport_info *vinfo = opa_vnic_dev_priv(netdev);
|
|
|
|
hfi1_vnic_update_stats(vinfo, vstats);
|
|
}
|
|
|
|
static u64 create_bypass_pbc(u32 vl, u32 dw_len)
|
|
{
|
|
u64 pbc;
|
|
|
|
pbc = ((u64)PBC_IHCRC_NONE << PBC_INSERT_HCRC_SHIFT)
|
|
| PBC_INSERT_BYPASS_ICRC | PBC_CREDIT_RETURN
|
|
| PBC_PACKET_BYPASS
|
|
| ((vl & PBC_VL_MASK) << PBC_VL_SHIFT)
|
|
| (dw_len & PBC_LENGTH_DWS_MASK) << PBC_LENGTH_DWS_SHIFT;
|
|
|
|
return pbc;
|
|
}
|
|
|
|
/* hfi1_vnic_maybe_stop_tx - stop tx queue if required */
|
|
static void hfi1_vnic_maybe_stop_tx(struct hfi1_vnic_vport_info *vinfo,
|
|
u8 q_idx)
|
|
{
|
|
netif_stop_subqueue(vinfo->netdev, q_idx);
|
|
if (!hfi1_vnic_sdma_write_avail(vinfo, q_idx))
|
|
return;
|
|
|
|
netif_start_subqueue(vinfo->netdev, q_idx);
|
|
}
|
|
|
|
static netdev_tx_t hfi1_netdev_start_xmit(struct sk_buff *skb,
|
|
struct net_device *netdev)
|
|
{
|
|
struct hfi1_vnic_vport_info *vinfo = opa_vnic_dev_priv(netdev);
|
|
u8 pad_len, q_idx = skb->queue_mapping;
|
|
struct hfi1_devdata *dd = vinfo->dd;
|
|
struct opa_vnic_skb_mdata *mdata;
|
|
u32 pkt_len, total_len;
|
|
int err = -EINVAL;
|
|
u64 pbc;
|
|
|
|
v_dbg("xmit: queue %d skb len %d\n", q_idx, skb->len);
|
|
if (unlikely(!netif_oper_up(netdev))) {
|
|
vinfo->stats[q_idx].tx_drop_state++;
|
|
goto tx_finish;
|
|
}
|
|
|
|
/* take out meta data */
|
|
mdata = (struct opa_vnic_skb_mdata *)skb->data;
|
|
skb_pull(skb, sizeof(*mdata));
|
|
if (unlikely(mdata->flags & OPA_VNIC_SKB_MDATA_ENCAP_ERR)) {
|
|
vinfo->stats[q_idx].tx_dlid_zero++;
|
|
goto tx_finish;
|
|
}
|
|
|
|
/* add tail padding (for 8 bytes size alignment) and icrc */
|
|
pad_len = -(skb->len + OPA_VNIC_ICRC_TAIL_LEN) & 0x7;
|
|
pad_len += OPA_VNIC_ICRC_TAIL_LEN;
|
|
|
|
/*
|
|
* pkt_len is how much data we have to write, includes header and data.
|
|
* total_len is length of the packet in Dwords plus the PBC should not
|
|
* include the CRC.
|
|
*/
|
|
pkt_len = (skb->len + pad_len) >> 2;
|
|
total_len = pkt_len + 2; /* PBC + packet */
|
|
|
|
pbc = create_bypass_pbc(mdata->vl, total_len);
|
|
|
|
skb_get(skb);
|
|
v_dbg("pbc 0x%016llX len %d pad_len %d\n", pbc, skb->len, pad_len);
|
|
err = dd->process_vnic_dma_send(dd, q_idx, vinfo, skb, pbc, pad_len);
|
|
if (unlikely(err)) {
|
|
if (err == -ENOMEM)
|
|
vinfo->stats[q_idx].netstats.tx_fifo_errors++;
|
|
else if (err != -EBUSY)
|
|
vinfo->stats[q_idx].netstats.tx_carrier_errors++;
|
|
}
|
|
/* remove the header before updating tx counters */
|
|
skb_pull(skb, OPA_VNIC_HDR_LEN);
|
|
|
|
if (unlikely(err == -EBUSY)) {
|
|
hfi1_vnic_maybe_stop_tx(vinfo, q_idx);
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
tx_finish:
|
|
/* update tx counters */
|
|
hfi1_vnic_update_tx_counters(vinfo, q_idx, skb, err);
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static u16 hfi1_vnic_select_queue(struct net_device *netdev,
|
|
struct sk_buff *skb,
|
|
void *accel_priv,
|
|
select_queue_fallback_t fallback)
|
|
{
|
|
struct hfi1_vnic_vport_info *vinfo = opa_vnic_dev_priv(netdev);
|
|
struct opa_vnic_skb_mdata *mdata;
|
|
struct sdma_engine *sde;
|
|
|
|
mdata = (struct opa_vnic_skb_mdata *)skb->data;
|
|
sde = sdma_select_engine_vl(vinfo->dd, mdata->entropy, mdata->vl);
|
|
return sde->this_idx;
|
|
}
|
|
|
|
/* hfi1_vnic_decap_skb - strip OPA header from the skb (ethernet) packet */
|
|
static inline int hfi1_vnic_decap_skb(struct hfi1_vnic_rx_queue *rxq,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct hfi1_vnic_vport_info *vinfo = rxq->vinfo;
|
|
int max_len = vinfo->netdev->mtu + VLAN_ETH_HLEN;
|
|
int rc = -EFAULT;
|
|
|
|
skb_pull(skb, OPA_VNIC_HDR_LEN);
|
|
|
|
/* Validate Packet length */
|
|
if (unlikely(skb->len > max_len))
|
|
vinfo->stats[rxq->idx].rx_oversize++;
|
|
else if (unlikely(skb->len < ETH_ZLEN))
|
|
vinfo->stats[rxq->idx].rx_runt++;
|
|
else
|
|
rc = 0;
|
|
return rc;
|
|
}
|
|
|
|
static inline struct sk_buff *hfi1_vnic_get_skb(struct hfi1_vnic_rx_queue *rxq)
|
|
{
|
|
unsigned char *pad_info;
|
|
struct sk_buff *skb;
|
|
|
|
skb = skb_dequeue(&rxq->skbq);
|
|
if (unlikely(!skb))
|
|
return NULL;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
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;
|
|
|
|
v_dbg("napi %d budget %d\n", rxq->idx, budget);
|
|
hfi1_vnic_handle_rx(rxq, &work_done, budget);
|
|
|
|
v_dbg("napi %d work_done %d\n", rxq->idx, work_done);
|
|
if (work_done < budget)
|
|
napi_complete(napi);
|
|
|
|
return work_done;
|
|
}
|
|
|
|
void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet)
|
|
{
|
|
struct hfi1_devdata *dd = packet->rcd->dd;
|
|
struct hfi1_vnic_vport_info *vinfo = NULL;
|
|
struct hfi1_vnic_rx_queue *rxq;
|
|
struct sk_buff *skb;
|
|
int l4_type, vesw_id = -1;
|
|
u8 q_idx;
|
|
|
|
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 = idr_find(&dd->vnic.vesw_idr, vesw_id);
|
|
|
|
/*
|
|
* In case of invalid vesw id, count the error on
|
|
* the first available vport.
|
|
*/
|
|
if (unlikely(!vinfo)) {
|
|
struct hfi1_vnic_vport_info *vinfo_tmp;
|
|
int id_tmp = 0;
|
|
|
|
vinfo_tmp = idr_get_next(&dd->vnic.vesw_idr, &id_tmp);
|
|
if (vinfo_tmp) {
|
|
spin_lock(&vport_cntr_lock);
|
|
vinfo_tmp->stats[0].netstats.rx_nohandler++;
|
|
spin_unlock(&vport_cntr_lock);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (unlikely(!vinfo)) {
|
|
dd_dev_warn(dd, "vnic rcv err: l4 %d vesw id %d ctx %d\n",
|
|
l4_type, vesw_id, packet->rcd->ctxt);
|
|
return;
|
|
}
|
|
|
|
q_idx = packet->rcd->vnic_q_idx;
|
|
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;
|
|
}
|
|
|
|
skb = netdev_alloc_skb(vinfo->netdev, packet->tlen);
|
|
if (unlikely(!skb)) {
|
|
vinfo->stats[q_idx].netstats.rx_fifo_errors++;
|
|
return;
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
/* ensure virtual eth switch id is valid */
|
|
if (!vinfo->vesw_id)
|
|
return -EINVAL;
|
|
|
|
rc = idr_alloc(&dd->vnic.vesw_idr, vinfo, vinfo->vesw_id,
|
|
vinfo->vesw_id + 1, GFP_NOWAIT);
|
|
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);
|
|
}
|
|
|
|
netif_carrier_on(netdev);
|
|
netif_tx_start_all_queues(netdev);
|
|
set_bit(HFI1_VNIC_UP, &vinfo->flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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);
|
|
idr_remove(&dd->vnic.vesw_idr, vinfo->vesw_id);
|
|
|
|
/* ensure irqs see the change */
|
|
hfi1_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);
|
|
}
|
|
}
|
|
|
|
static int hfi1_netdev_open(struct net_device *netdev)
|
|
{
|
|
struct hfi1_vnic_vport_info *vinfo = opa_vnic_dev_priv(netdev);
|
|
int rc;
|
|
|
|
mutex_lock(&vinfo->lock);
|
|
rc = hfi1_vnic_up(vinfo);
|
|
mutex_unlock(&vinfo->lock);
|
|
return rc;
|
|
}
|
|
|
|
static int hfi1_netdev_close(struct net_device *netdev)
|
|
{
|
|
struct hfi1_vnic_vport_info *vinfo = opa_vnic_dev_priv(netdev);
|
|
|
|
mutex_lock(&vinfo->lock);
|
|
if (test_bit(HFI1_VNIC_UP, &vinfo->flags))
|
|
hfi1_vnic_down(vinfo);
|
|
mutex_unlock(&vinfo->lock);
|
|
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;
|
|
|
|
mutex_lock(&hfi1_mutex);
|
|
if (!dd->vnic.num_vports) {
|
|
rc = hfi1_vnic_txreq_init(dd);
|
|
if (rc)
|
|
goto txreq_fail;
|
|
|
|
dd->vnic.msix_idx = dd->first_dyn_msix_idx;
|
|
}
|
|
|
|
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;
|
|
}
|
|
goto alloc_fail;
|
|
}
|
|
|
|
if (dd->vnic.num_ctxt != i) {
|
|
dd->vnic.num_ctxt = i;
|
|
hfi1_init_vnic_rsm(dd);
|
|
}
|
|
|
|
dd->vnic.num_vports++;
|
|
hfi1_vnic_sdma_init(vinfo);
|
|
alloc_fail:
|
|
if (!dd->vnic.num_vports)
|
|
hfi1_vnic_txreq_deinit(dd);
|
|
txreq_fail:
|
|
mutex_unlock(&hfi1_mutex);
|
|
return rc;
|
|
}
|
|
|
|
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;
|
|
}
|
|
hfi1_deinit_vnic_rsm(dd);
|
|
dd->vnic.num_ctxt = 0;
|
|
hfi1_vnic_txreq_deinit(dd);
|
|
}
|
|
mutex_unlock(&hfi1_mutex);
|
|
}
|
|
|
|
static void hfi1_vnic_set_vesw_id(struct net_device *netdev, int id)
|
|
{
|
|
struct hfi1_vnic_vport_info *vinfo = opa_vnic_dev_priv(netdev);
|
|
bool reopen = false;
|
|
|
|
/*
|
|
* If vesw_id is being changed, and if the vnic port is up,
|
|
* reset the vnic port to ensure new vesw_id gets picked up
|
|
*/
|
|
if (id != vinfo->vesw_id) {
|
|
mutex_lock(&vinfo->lock);
|
|
if (test_bit(HFI1_VNIC_UP, &vinfo->flags)) {
|
|
hfi1_vnic_down(vinfo);
|
|
reopen = true;
|
|
}
|
|
|
|
vinfo->vesw_id = id;
|
|
if (reopen)
|
|
hfi1_vnic_up(vinfo);
|
|
|
|
mutex_unlock(&vinfo->lock);
|
|
}
|
|
}
|
|
|
|
/* netdev ops */
|
|
static const struct net_device_ops hfi1_netdev_ops = {
|
|
.ndo_open = hfi1_netdev_open,
|
|
.ndo_stop = hfi1_netdev_close,
|
|
.ndo_start_xmit = hfi1_netdev_start_xmit,
|
|
.ndo_select_queue = hfi1_vnic_select_queue,
|
|
.ndo_get_stats64 = hfi1_vnic_get_stats64,
|
|
};
|
|
|
|
static void hfi1_vnic_free_rn(struct net_device *netdev)
|
|
{
|
|
struct hfi1_vnic_vport_info *vinfo = opa_vnic_dev_priv(netdev);
|
|
|
|
hfi1_vnic_deinit(vinfo);
|
|
mutex_destroy(&vinfo->lock);
|
|
free_netdev(netdev);
|
|
}
|
|
|
|
struct net_device *hfi1_vnic_alloc_rn(struct ib_device *device,
|
|
u8 port_num,
|
|
enum rdma_netdev_t type,
|
|
const char *name,
|
|
unsigned char name_assign_type,
|
|
void (*setup)(struct net_device *))
|
|
{
|
|
struct hfi1_devdata *dd = dd_from_ibdev(device);
|
|
struct hfi1_vnic_vport_info *vinfo;
|
|
struct net_device *netdev;
|
|
struct rdma_netdev *rn;
|
|
int i, size, rc;
|
|
|
|
if (!dd->num_vnic_contexts)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
if (!port_num || (port_num > dd->num_pports))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
if (type != RDMA_NETDEV_OPA_VNIC)
|
|
return ERR_PTR(-EOPNOTSUPP);
|
|
|
|
size = sizeof(struct opa_vnic_rdma_netdev) + sizeof(*vinfo);
|
|
netdev = alloc_netdev_mqs(size, name, name_assign_type, setup,
|
|
dd->chip_sdma_engines, dd->num_vnic_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->chip_sdma_engines;
|
|
vinfo->num_rx_q = dd->num_vnic_contexts;
|
|
vinfo->netdev = netdev;
|
|
rn->free_rdma_netdev = hfi1_vnic_free_rn;
|
|
rn->set_id = hfi1_vnic_set_vesw_id;
|
|
|
|
netdev->features = NETIF_F_HIGHDMA | NETIF_F_SG;
|
|
netdev->hw_features = netdev->features;
|
|
netdev->vlan_features = netdev->features;
|
|
netdev->watchdog_timeo = msecs_to_jiffies(HFI_TX_TIMEOUT_MS);
|
|
netdev->netdev_ops = &hfi1_netdev_ops;
|
|
mutex_init(&vinfo->lock);
|
|
|
|
for (i = 0; i < vinfo->num_rx_q; i++) {
|
|
struct hfi1_vnic_rx_queue *rxq = &vinfo->rxq[i];
|
|
|
|
rxq->idx = i;
|
|
rxq->vinfo = vinfo;
|
|
rxq->netdev = netdev;
|
|
netif_napi_add(netdev, &rxq->napi, hfi1_vnic_napi, 64);
|
|
}
|
|
|
|
rc = hfi1_vnic_init(vinfo);
|
|
if (rc)
|
|
goto init_fail;
|
|
|
|
return netdev;
|
|
init_fail:
|
|
mutex_destroy(&vinfo->lock);
|
|
free_netdev(netdev);
|
|
return ERR_PTR(rc);
|
|
}
|
|
|