From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/infiniband/hw/hfi1/driver.c | 538 ++++++++++++++++++++++++++++++++++++++---------------------
1 files changed, 347 insertions(+), 191 deletions(-)
diff --git a/kernel/drivers/infiniband/hw/hfi1/driver.c b/kernel/drivers/infiniband/hw/hfi1/driver.c
index 769e114..8085718 100644
--- a/kernel/drivers/infiniband/hw/hfi1/driver.c
+++ b/kernel/drivers/infiniband/hw/hfi1/driver.c
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2015-2018 Intel Corporation.
+ * Copyright(c) 2015-2020 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.
@@ -54,6 +54,7 @@
#include <linux/module.h>
#include <linux/prefetch.h>
#include <rdma/ib_verbs.h>
+#include <linux/etherdevice.h>
#include "hfi.h"
#include "trace.h"
@@ -62,6 +63,9 @@
#include "debugfs.h"
#include "vnic.h"
#include "fault.h"
+
+#include "ipoib.h"
+#include "netdev.h"
#undef pr_fmt
#define pr_fmt(fmt) DRIVER_NAME ": " fmt
@@ -72,8 +76,6 @@
*/
const char ib_hfi1_version[] = HFI1_DRIVER_VERSION "\n";
-DEFINE_SPINLOCK(hfi1_devs_lock);
-LIST_HEAD(hfi1_dev_list);
DEFINE_MUTEX(hfi1_mutex); /* general driver use */
unsigned int hfi1_max_mtu = HFI1_DEFAULT_MAX_MTU;
@@ -175,11 +177,11 @@
{
struct hfi1_devdata *dd;
struct hfi1_pportdata *ppd;
- unsigned long flags;
+ unsigned long index, flags;
int pidx, nunits_active = 0;
- spin_lock_irqsave(&hfi1_devs_lock, flags);
- list_for_each_entry(dd, &hfi1_dev_list, list) {
+ xa_lock_irqsave(&hfi1_dev_table, flags);
+ xa_for_each(&hfi1_dev_table, index, dd) {
if (!(dd->flags & HFI1_PRESENT) || !dd->kregbase1)
continue;
for (pidx = 0; pidx < dd->num_pports; ++pidx) {
@@ -190,7 +192,7 @@
}
}
}
- spin_unlock_irqrestore(&hfi1_devs_lock, flags);
+ xa_unlock_irqrestore(&hfi1_dev_table, flags);
return nunits_active;
}
@@ -264,7 +266,7 @@
hfi1_dbg_fault_suppress_err(verbs_dev))
return;
- if (packet->rhf & (RHF_VCRC_ERR | RHF_ICRC_ERR))
+ if (packet->rhf & RHF_ICRC_ERR)
return;
if (packet->etype == RHF_RCV_TYPE_BYPASS) {
@@ -413,14 +415,14 @@
static inline void init_packet(struct hfi1_ctxtdata *rcd,
struct hfi1_packet *packet)
{
- packet->rsize = rcd->rcvhdrqentsize; /* words */
- packet->maxcnt = rcd->rcvhdrq_cnt * packet->rsize; /* words */
+ packet->rsize = get_hdrqentsize(rcd); /* words */
+ packet->maxcnt = get_hdrq_cnt(rcd) * packet->rsize; /* words */
packet->rcd = rcd;
packet->updegr = 0;
packet->etail = -1;
packet->rhf_addr = get_rhf_addr(rcd);
packet->rhf = rhf_to_cpu(packet->rhf_addr);
- packet->rhqoff = rcd->head;
+ packet->rhqoff = hfi1_rcd_head(rcd);
packet->numpkt = 0;
}
@@ -516,7 +518,9 @@
*/
do_cnp = prescan ||
(opcode >= IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST &&
- opcode <= IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE);
+ opcode <= IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE) ||
+ opcode == TID_OP(READ_RESP) ||
+ opcode == TID_OP(ACK);
/* Call appropriate CNP handler */
if (!ignore_fecn && do_cnp && fecn)
@@ -551,22 +555,22 @@
mdata->maxcnt = packet->maxcnt;
mdata->ps_head = packet->rhqoff;
- if (HFI1_CAP_KGET_MASK(rcd->flags, DMA_RTAIL)) {
+ if (get_dma_rtail_setting(rcd)) {
mdata->ps_tail = get_rcvhdrtail(rcd);
if (rcd->ctxt == HFI1_CTRL_CTXT)
- mdata->ps_seq = rcd->seq_cnt;
+ mdata->ps_seq = hfi1_seq_cnt(rcd);
else
mdata->ps_seq = 0; /* not used with DMA_RTAIL */
} else {
mdata->ps_tail = 0; /* used only with DMA_RTAIL*/
- mdata->ps_seq = rcd->seq_cnt;
+ mdata->ps_seq = hfi1_seq_cnt(rcd);
}
}
static inline int ps_done(struct ps_mdata *mdata, u64 rhf,
struct hfi1_ctxtdata *rcd)
{
- if (HFI1_CAP_KGET_MASK(rcd->flags, DMA_RTAIL))
+ if (get_dma_rtail_setting(rcd))
return mdata->ps_head == mdata->ps_tail;
return mdata->ps_seq != rhf_rcv_seq(rhf);
}
@@ -592,11 +596,9 @@
mdata->ps_head = 0;
/* Control context must do seq counting */
- if (!HFI1_CAP_KGET_MASK(rcd->flags, DMA_RTAIL) ||
- (rcd->ctxt == HFI1_CTRL_CTXT)) {
- if (++mdata->ps_seq > 13)
- mdata->ps_seq = 1;
- }
+ if (!get_dma_rtail_setting(rcd) ||
+ rcd->ctxt == HFI1_CTRL_CTXT)
+ mdata->ps_seq = hfi1_seq_incr_wrap(mdata->ps_seq);
}
/*
@@ -750,6 +752,39 @@
return ret;
}
+static void process_rcv_packet_napi(struct hfi1_packet *packet)
+{
+ packet->etype = rhf_rcv_type(packet->rhf);
+
+ /* total length */
+ packet->tlen = rhf_pkt_len(packet->rhf); /* in bytes */
+ /* retrieve eager buffer details */
+ packet->etail = rhf_egr_index(packet->rhf);
+ packet->ebuf = get_egrbuf(packet->rcd, packet->rhf,
+ &packet->updegr);
+ /*
+ * Prefetch the contents of the eager buffer. It is
+ * OK to send a negative length to prefetch_range().
+ * The +2 is the size of the RHF.
+ */
+ prefetch_range(packet->ebuf,
+ packet->tlen - ((packet->rcd->rcvhdrqentsize -
+ (rhf_hdrq_offset(packet->rhf)
+ + 2)) * 4));
+
+ packet->rcd->rhf_rcv_function_map[packet->etype](packet);
+ packet->numpkt++;
+
+ /* Set up for the next packet */
+ packet->rhqoff += packet->rsize;
+ if (packet->rhqoff >= packet->maxcnt)
+ packet->rhqoff = 0;
+
+ packet->rhf_addr = (__le32 *)packet->rcd->rcvhdrq + packet->rhqoff +
+ packet->rcd->rhf_offset;
+ packet->rhf = rhf_to_cpu(packet->rhf_addr);
+}
+
static inline int process_rcv_packet(struct hfi1_packet *packet, int thread)
{
int ret;
@@ -770,7 +805,7 @@
* The +2 is the size of the RHF.
*/
prefetch_range(packet->ebuf,
- packet->tlen - ((packet->rcd->rcvhdrqentsize -
+ packet->tlen - ((get_hdrqentsize(packet->rcd) -
(rhf_hdrq_offset(packet->rhf)
+ 2)) * 4));
}
@@ -824,8 +859,38 @@
* The only thing we need to do is a final update and call for an
* interrupt
*/
- update_usrhead(packet->rcd, packet->rcd->head, packet->updegr,
+ update_usrhead(packet->rcd, hfi1_rcd_head(packet->rcd), packet->updegr,
packet->etail, rcv_intr_dynamic, packet->numpkt);
+}
+
+/*
+ * handle_receive_interrupt_napi_fp - receive a packet
+ * @rcd: the context
+ * @budget: polling budget
+ *
+ * Called from interrupt handler for receive interrupt.
+ * This is the fast path interrupt handler
+ * when executing napi soft irq environment.
+ */
+int handle_receive_interrupt_napi_fp(struct hfi1_ctxtdata *rcd, int budget)
+{
+ struct hfi1_packet packet;
+
+ init_packet(rcd, &packet);
+ if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf)))
+ goto bail;
+
+ while (packet.numpkt < budget) {
+ process_rcv_packet_napi(&packet);
+ if (hfi1_seq_incr(rcd, rhf_rcv_seq(packet.rhf)))
+ break;
+
+ process_rcv_update(0, &packet);
+ }
+ hfi1_set_rcd_head(rcd, packet.rhqoff);
+bail:
+ finish_packet(&packet);
+ return packet.numpkt;
}
/*
@@ -833,13 +898,11 @@
*/
int handle_receive_interrupt_nodma_rtail(struct hfi1_ctxtdata *rcd, int thread)
{
- u32 seq;
int last = RCV_PKT_OK;
struct hfi1_packet packet;
init_packet(rcd, &packet);
- seq = rhf_rcv_seq(packet.rhf);
- if (seq != rcd->seq_cnt) {
+ if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf))) {
last = RCV_PKT_DONE;
goto bail;
}
@@ -848,15 +911,12 @@
while (last == RCV_PKT_OK) {
last = process_rcv_packet(&packet, thread);
- seq = rhf_rcv_seq(packet.rhf);
- if (++rcd->seq_cnt > 13)
- rcd->seq_cnt = 1;
- if (seq != rcd->seq_cnt)
+ if (hfi1_seq_incr(rcd, rhf_rcv_seq(packet.rhf)))
last = RCV_PKT_DONE;
process_rcv_update(last, &packet);
}
process_rcv_qp_work(&packet);
- rcd->head = packet.rhqoff;
+ hfi1_set_rcd_head(rcd, packet.rhqoff);
bail:
finish_packet(&packet);
return last;
@@ -885,15 +945,14 @@
process_rcv_update(last, &packet);
}
process_rcv_qp_work(&packet);
- rcd->head = packet.rhqoff;
+ hfi1_set_rcd_head(rcd, packet.rhqoff);
bail:
finish_packet(&packet);
return last;
}
-static inline void set_nodma_rtail(struct hfi1_devdata *dd, u16 ctxt)
+static void set_all_fastpath(struct hfi1_devdata *dd, struct hfi1_ctxtdata *rcd)
{
- struct hfi1_ctxtdata *rcd;
u16 i;
/*
@@ -901,50 +960,17 @@
* interrupt handler only for that context. Otherwise, switch
* interrupt handler for all statically allocated kernel contexts.
*/
- if (ctxt >= dd->first_dyn_alloc_ctxt) {
- rcd = hfi1_rcd_get_by_index_safe(dd, ctxt);
- if (rcd) {
- rcd->do_interrupt =
- &handle_receive_interrupt_nodma_rtail;
- hfi1_rcd_put(rcd);
- }
- return;
- }
-
- for (i = HFI1_CTRL_CTXT + 1; i < dd->first_dyn_alloc_ctxt; i++) {
- rcd = hfi1_rcd_get_by_index(dd, i);
- if (rcd)
- rcd->do_interrupt =
- &handle_receive_interrupt_nodma_rtail;
+ if (rcd->ctxt >= dd->first_dyn_alloc_ctxt && !rcd->is_vnic) {
+ hfi1_rcd_get(rcd);
+ hfi1_set_fast(rcd);
hfi1_rcd_put(rcd);
- }
-}
-
-static inline void set_dma_rtail(struct hfi1_devdata *dd, u16 ctxt)
-{
- struct hfi1_ctxtdata *rcd;
- u16 i;
-
- /*
- * For dynamically allocated kernel contexts (like vnic) switch
- * interrupt handler only for that context. Otherwise, switch
- * interrupt handler for all statically allocated kernel contexts.
- */
- if (ctxt >= dd->first_dyn_alloc_ctxt) {
- rcd = hfi1_rcd_get_by_index_safe(dd, ctxt);
- if (rcd) {
- rcd->do_interrupt =
- &handle_receive_interrupt_dma_rtail;
- hfi1_rcd_put(rcd);
- }
return;
}
- for (i = HFI1_CTRL_CTXT + 1; i < dd->first_dyn_alloc_ctxt; i++) {
+ for (i = HFI1_CTRL_CTXT + 1; i < dd->num_rcv_contexts; i++) {
rcd = hfi1_rcd_get_by_index(dd, i);
- if (rcd)
- rcd->do_interrupt =
- &handle_receive_interrupt_dma_rtail;
+ if (rcd && (i < dd->first_dyn_alloc_ctxt || rcd->is_vnic))
+ hfi1_set_fast(rcd);
hfi1_rcd_put(rcd);
}
}
@@ -960,17 +986,14 @@
if (!rcd)
continue;
if (i < dd->first_dyn_alloc_ctxt || rcd->is_vnic)
- rcd->do_interrupt = &handle_receive_interrupt;
+ rcd->do_interrupt = rcd->slow_handler;
hfi1_rcd_put(rcd);
}
}
-static inline int set_armed_to_active(struct hfi1_ctxtdata *rcd,
- struct hfi1_packet *packet,
- struct hfi1_devdata *dd)
+static bool __set_armed_to_active(struct hfi1_packet *packet)
{
- struct work_struct *lsaw = &rcd->ppd->linkstate_active_work;
u8 etype = rhf_rcv_type(packet->rhf);
u8 sc = SC15_PACKET;
@@ -985,19 +1008,34 @@
sc = hfi1_16B_get_sc(hdr);
}
if (sc != SC15_PACKET) {
- int hwstate = driver_lstate(rcd->ppd);
+ int hwstate = driver_lstate(packet->rcd->ppd);
+ struct work_struct *lsaw =
+ &packet->rcd->ppd->linkstate_active_work;
if (hwstate != IB_PORT_ACTIVE) {
- dd_dev_info(dd,
+ dd_dev_info(packet->rcd->dd,
"Unexpected link state %s\n",
opa_lstate_name(hwstate));
- return 0;
+ return false;
}
- queue_work(rcd->ppd->link_wq, lsaw);
- return 1;
+ queue_work(packet->rcd->ppd->link_wq, lsaw);
+ return true;
}
- return 0;
+ return false;
+}
+
+/**
+ * armed to active - the fast path for armed to active
+ * @packet: the packet structure
+ *
+ * Return true if packet processing needs to bail.
+ */
+static bool set_armed_to_active(struct hfi1_packet *packet)
+{
+ if (likely(packet->rcd->ppd->host_link_state != HLS_UP_ARMED))
+ return false;
+ return __set_armed_to_active(packet);
}
/*
@@ -1015,15 +1053,15 @@
struct hfi1_packet packet;
int skip_pkt = 0;
+ if (!rcd->rcvhdrq)
+ return RCV_PKT_OK;
/* Control context will always use the slow path interrupt handler */
needset = (rcd->ctxt == HFI1_CTRL_CTXT) ? 0 : 1;
init_packet(rcd, &packet);
- if (!HFI1_CAP_KGET_MASK(rcd->flags, DMA_RTAIL)) {
- u32 seq = rhf_rcv_seq(packet.rhf);
-
- if (seq != rcd->seq_cnt) {
+ if (!get_dma_rtail_setting(rcd)) {
+ if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf))) {
last = RCV_PKT_DONE;
goto bail;
}
@@ -1040,22 +1078,15 @@
* Control context can potentially receive an invalid
* rhf. Drop such packets.
*/
- if (rcd->ctxt == HFI1_CTRL_CTXT) {
- u32 seq = rhf_rcv_seq(packet.rhf);
-
- if (seq != rcd->seq_cnt)
+ if (rcd->ctxt == HFI1_CTRL_CTXT)
+ if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf)))
skip_pkt = 1;
- }
}
prescan_rxq(rcd, &packet);
while (last == RCV_PKT_OK) {
- if (unlikely(dd->do_drop &&
- atomic_xchg(&dd->drop_packet, DROP_PACKET_OFF) ==
- DROP_PACKET_ON)) {
- dd->do_drop = 0;
-
+ if (hfi1_need_drop(dd)) {
/* On to the next packet */
packet.rhqoff += packet.rsize;
packet.rhf_addr = (__le32 *)rcd->rcvhdrq +
@@ -1067,26 +1098,14 @@
last = skip_rcv_packet(&packet, thread);
skip_pkt = 0;
} else {
- /* Auto activate link on non-SC15 packet receive */
- if (unlikely(rcd->ppd->host_link_state ==
- HLS_UP_ARMED) &&
- set_armed_to_active(rcd, &packet, dd))
+ if (set_armed_to_active(&packet))
goto bail;
last = process_rcv_packet(&packet, thread);
}
- if (!HFI1_CAP_KGET_MASK(rcd->flags, DMA_RTAIL)) {
- u32 seq = rhf_rcv_seq(packet.rhf);
-
- if (++rcd->seq_cnt > 13)
- rcd->seq_cnt = 1;
- if (seq != rcd->seq_cnt)
+ if (!get_dma_rtail_setting(rcd)) {
+ if (hfi1_seq_incr(rcd, rhf_rcv_seq(packet.rhf)))
last = RCV_PKT_DONE;
- if (needset) {
- dd_dev_info(dd, "Switching to NO_DMA_RTAIL\n");
- set_nodma_rtail(dd, rcd->ctxt);
- needset = 0;
- }
} else {
if (packet.rhqoff == hdrqtail)
last = RCV_PKT_DONE;
@@ -1095,27 +1114,24 @@
* rhf. Drop such packets.
*/
if (rcd->ctxt == HFI1_CTRL_CTXT) {
- u32 seq = rhf_rcv_seq(packet.rhf);
+ bool lseq;
- if (++rcd->seq_cnt > 13)
- rcd->seq_cnt = 1;
- if (!last && (seq != rcd->seq_cnt))
+ lseq = hfi1_seq_incr(rcd,
+ rhf_rcv_seq(packet.rhf));
+ if (!last && lseq)
skip_pkt = 1;
- }
-
- if (needset) {
- dd_dev_info(dd,
- "Switching to DMA_RTAIL\n");
- set_dma_rtail(dd, rcd->ctxt);
- needset = 0;
}
}
+ if (needset) {
+ needset = false;
+ set_all_fastpath(dd, rcd);
+ }
process_rcv_update(last, &packet);
}
process_rcv_qp_work(&packet);
- rcd->head = packet.rhqoff;
+ hfi1_set_rcd_head(rcd, packet.rhqoff);
bail:
/*
@@ -1124,6 +1140,63 @@
*/
finish_packet(&packet);
return last;
+}
+
+/*
+ * handle_receive_interrupt_napi_sp - receive a packet
+ * @rcd: the context
+ * @budget: polling budget
+ *
+ * Called from interrupt handler for errors or receive interrupt.
+ * This is the slow path interrupt handler
+ * when executing napi soft irq environment.
+ */
+int handle_receive_interrupt_napi_sp(struct hfi1_ctxtdata *rcd, int budget)
+{
+ struct hfi1_devdata *dd = rcd->dd;
+ int last = RCV_PKT_OK;
+ bool needset = true;
+ struct hfi1_packet packet;
+
+ init_packet(rcd, &packet);
+ if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf)))
+ goto bail;
+
+ while (last != RCV_PKT_DONE && packet.numpkt < budget) {
+ if (hfi1_need_drop(dd)) {
+ /* On to the next packet */
+ packet.rhqoff += packet.rsize;
+ packet.rhf_addr = (__le32 *)rcd->rcvhdrq +
+ packet.rhqoff +
+ rcd->rhf_offset;
+ packet.rhf = rhf_to_cpu(packet.rhf_addr);
+
+ } else {
+ if (set_armed_to_active(&packet))
+ goto bail;
+ process_rcv_packet_napi(&packet);
+ }
+
+ if (hfi1_seq_incr(rcd, rhf_rcv_seq(packet.rhf)))
+ last = RCV_PKT_DONE;
+
+ if (needset) {
+ needset = false;
+ set_all_fastpath(dd, rcd);
+ }
+
+ process_rcv_update(last, &packet);
+ }
+
+ hfi1_set_rcd_head(rcd, packet.rhqoff);
+
+bail:
+ /*
+ * Always write head at end, and setup rcv interrupt, even
+ * if no packets were processed.
+ */
+ finish_packet(&packet);
+ return packet.numpkt;
}
/*
@@ -1427,7 +1500,7 @@
if ((!(hfi1_is_16B_mcast(packet->dlid))) &&
(packet->dlid !=
opa_get_lid(be32_to_cpu(OPA_LID_PERMISSIVE), 16B))) {
- if (packet->dlid != ppd->lid)
+ if ((packet->dlid & ~((1 << ppd->lmc) - 1)) != ppd->lid)
return -EINVAL;
}
@@ -1576,80 +1649,143 @@
return -EINVAL;
}
-void handle_eflags(struct hfi1_packet *packet)
+static void show_eflags_errs(struct hfi1_packet *packet)
{
struct hfi1_ctxtdata *rcd = packet->rcd;
u32 rte = rhf_rcv_type_err(packet->rhf);
+ dd_dev_err(rcd->dd,
+ "receive context %d: rhf 0x%016llx, errs [ %s%s%s%s%s%s%s] rte 0x%x\n",
+ rcd->ctxt, packet->rhf,
+ packet->rhf & RHF_K_HDR_LEN_ERR ? "k_hdr_len " : "",
+ packet->rhf & RHF_DC_UNC_ERR ? "dc_unc " : "",
+ packet->rhf & RHF_DC_ERR ? "dc " : "",
+ packet->rhf & RHF_TID_ERR ? "tid " : "",
+ packet->rhf & RHF_LEN_ERR ? "len " : "",
+ packet->rhf & RHF_ECC_ERR ? "ecc " : "",
+ packet->rhf & RHF_ICRC_ERR ? "icrc " : "",
+ rte);
+}
+
+void handle_eflags(struct hfi1_packet *packet)
+{
+ struct hfi1_ctxtdata *rcd = packet->rcd;
+
rcv_hdrerr(rcd, rcd->ppd, packet);
if (rhf_err_flags(packet->rhf))
- dd_dev_err(rcd->dd,
- "receive context %d: rhf 0x%016llx, errs [ %s%s%s%s%s%s%s%s] rte 0x%x\n",
- rcd->ctxt, packet->rhf,
- packet->rhf & RHF_K_HDR_LEN_ERR ? "k_hdr_len " : "",
- packet->rhf & RHF_DC_UNC_ERR ? "dc_unc " : "",
- packet->rhf & RHF_DC_ERR ? "dc " : "",
- packet->rhf & RHF_TID_ERR ? "tid " : "",
- packet->rhf & RHF_LEN_ERR ? "len " : "",
- packet->rhf & RHF_ECC_ERR ? "ecc " : "",
- packet->rhf & RHF_VCRC_ERR ? "vcrc " : "",
- packet->rhf & RHF_ICRC_ERR ? "icrc " : "",
- rte);
+ show_eflags_errs(packet);
+}
+
+static void hfi1_ipoib_ib_rcv(struct hfi1_packet *packet)
+{
+ struct hfi1_ibport *ibp;
+ struct net_device *netdev;
+ struct hfi1_ctxtdata *rcd = packet->rcd;
+ struct napi_struct *napi = rcd->napi;
+ struct sk_buff *skb;
+ struct hfi1_netdev_rxq *rxq = container_of(napi,
+ struct hfi1_netdev_rxq, napi);
+ u32 extra_bytes;
+ u32 tlen, qpnum;
+ bool do_work, do_cnp;
+ struct hfi1_ipoib_dev_priv *priv;
+
+ trace_hfi1_rcvhdr(packet);
+
+ hfi1_setup_ib_header(packet);
+
+ packet->ohdr = &((struct ib_header *)packet->hdr)->u.oth;
+ packet->grh = NULL;
+
+ if (unlikely(rhf_err_flags(packet->rhf))) {
+ handle_eflags(packet);
+ return;
+ }
+
+ qpnum = ib_bth_get_qpn(packet->ohdr);
+ netdev = hfi1_netdev_get_data(rcd->dd, qpnum);
+ if (!netdev)
+ goto drop_no_nd;
+
+ trace_input_ibhdr(rcd->dd, packet, !!(rhf_dc_info(packet->rhf)));
+ trace_ctxt_rsm_hist(rcd->ctxt);
+
+ /* handle congestion notifications */
+ do_work = hfi1_may_ecn(packet);
+ if (unlikely(do_work)) {
+ do_cnp = (packet->opcode != IB_OPCODE_CNP);
+ (void)hfi1_process_ecn_slowpath(hfi1_ipoib_priv(netdev)->qp,
+ packet, do_cnp);
+ }
+
+ /*
+ * We have split point after last byte of DETH
+ * lets strip padding and CRC and ICRC.
+ * tlen is whole packet len so we need to
+ * subtract header size as well.
+ */
+ tlen = packet->tlen;
+ extra_bytes = ib_bth_get_pad(packet->ohdr) + (SIZE_OF_CRC << 2) +
+ packet->hlen;
+ if (unlikely(tlen < extra_bytes))
+ goto drop;
+
+ tlen -= extra_bytes;
+
+ skb = hfi1_ipoib_prepare_skb(rxq, tlen, packet->ebuf);
+ if (unlikely(!skb))
+ goto drop;
+
+ priv = hfi1_ipoib_priv(netdev);
+ hfi1_ipoib_update_rx_netstats(priv, 1, skb->len);
+
+ skb->dev = netdev;
+ skb->pkt_type = PACKET_HOST;
+ netif_receive_skb(skb);
+
+ return;
+
+drop:
+ ++netdev->stats.rx_dropped;
+drop_no_nd:
+ ibp = rcd_to_iport(packet->rcd);
+ ++ibp->rvp.n_pkt_drops;
}
/*
* The following functions are called by the interrupt handler. They are type
* specific handlers for each packet type.
*/
-static int process_receive_ib(struct hfi1_packet *packet)
+static void process_receive_ib(struct hfi1_packet *packet)
{
if (hfi1_setup_9B_packet(packet))
- return RHF_RCV_CONTINUE;
+ return;
if (unlikely(hfi1_dbg_should_fault_rx(packet)))
- return RHF_RCV_CONTINUE;
+ return;
trace_hfi1_rcvhdr(packet);
if (unlikely(rhf_err_flags(packet->rhf))) {
handle_eflags(packet);
- return RHF_RCV_CONTINUE;
+ return;
}
hfi1_ib_rcv(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_16B_get_l2(packet->ebuf) == OPA_16B_L2_TYPE) &&
- (hfi1_16B_get_l4(packet->ebuf) == OPA_16B_L4_ETHR))
- return true;
-
- return false;
-}
-
-static int process_receive_bypass(struct hfi1_packet *packet)
+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 RHF_RCV_CONTINUE;
- }
-
if (hfi1_setup_bypass_packet(packet))
- return RHF_RCV_CONTINUE;
+ return;
trace_hfi1_rcvhdr(packet);
if (unlikely(rhf_err_flags(packet->rhf))) {
handle_eflags(packet);
- return RHF_RCV_CONTINUE;
+ return;
}
if (hfi1_16B_get_l2(packet->hdr) == 0x2) {
@@ -1672,17 +1808,16 @@
(OPA_EI_STATUS_SMASK | BAD_L2_ERR);
}
}
- return RHF_RCV_CONTINUE;
}
-static int process_receive_error(struct hfi1_packet *packet)
+static void process_receive_error(struct hfi1_packet *packet)
{
/* KHdrHCRCErr -- KDETH packet with a bad HCRC */
if (unlikely(
hfi1_dbg_fault_suppress_err(&packet->rcd->dd->verbs_dev) &&
(rhf_rcv_type_err(packet->rhf) == RHF_RCV_TYPE_ERROR ||
packet->rhf & RHF_DC_ERR)))
- return RHF_RCV_CONTINUE;
+ return;
hfi1_setup_ib_header(packet);
handle_eflags(packet);
@@ -1690,61 +1825,71 @@
if (unlikely(rhf_err_flags(packet->rhf)))
dd_dev_err(packet->rcd->dd,
"Unhandled error packet received. Dropping.\n");
-
- return RHF_RCV_CONTINUE;
}
-static int kdeth_process_expected(struct hfi1_packet *packet)
+static void kdeth_process_expected(struct hfi1_packet *packet)
{
hfi1_setup_9B_packet(packet);
if (unlikely(hfi1_dbg_should_fault_rx(packet)))
- return RHF_RCV_CONTINUE;
+ return;
- if (unlikely(rhf_err_flags(packet->rhf)))
- handle_eflags(packet);
+ if (unlikely(rhf_err_flags(packet->rhf))) {
+ struct hfi1_ctxtdata *rcd = packet->rcd;
- dd_dev_err(packet->rcd->dd,
- "Unhandled expected packet received. Dropping.\n");
- return RHF_RCV_CONTINUE;
+ if (hfi1_handle_kdeth_eflags(rcd, rcd->ppd, packet))
+ return;
+ }
+
+ hfi1_kdeth_expected_rcv(packet);
}
-static int kdeth_process_eager(struct hfi1_packet *packet)
+static void kdeth_process_eager(struct hfi1_packet *packet)
{
hfi1_setup_9B_packet(packet);
if (unlikely(hfi1_dbg_should_fault_rx(packet)))
- return RHF_RCV_CONTINUE;
- if (unlikely(rhf_err_flags(packet->rhf)))
- handle_eflags(packet);
+ return;
- dd_dev_err(packet->rcd->dd,
- "Unhandled eager packet received. Dropping.\n");
- return RHF_RCV_CONTINUE;
+ trace_hfi1_rcvhdr(packet);
+ if (unlikely(rhf_err_flags(packet->rhf))) {
+ struct hfi1_ctxtdata *rcd = packet->rcd;
+
+ show_eflags_errs(packet);
+ if (hfi1_handle_kdeth_eflags(rcd, rcd->ppd, packet))
+ return;
+ }
+
+ hfi1_kdeth_eager_rcv(packet);
}
-static int process_receive_invalid(struct hfi1_packet *packet)
+static void process_receive_invalid(struct hfi1_packet *packet)
{
dd_dev_err(packet->rcd->dd, "Invalid packet type %d. Dropping\n",
rhf_rcv_type(packet->rhf));
- return RHF_RCV_CONTINUE;
}
+
+#define HFI1_RCVHDR_DUMP_MAX 5
void seqfile_dump_rcd(struct seq_file *s, struct hfi1_ctxtdata *rcd)
{
struct hfi1_packet packet;
struct ps_mdata mdata;
+ int i;
- seq_printf(s, "Rcd %u: RcvHdr cnt %u entsize %u %s head %llu tail %llu\n",
- rcd->ctxt, rcd->rcvhdrq_cnt, rcd->rcvhdrqentsize,
- HFI1_CAP_KGET_MASK(rcd->flags, DMA_RTAIL) ?
+ seq_printf(s, "Rcd %u: RcvHdr cnt %u entsize %u %s ctrl 0x%08llx status 0x%08llx, head %llu tail %llu sw head %u\n",
+ rcd->ctxt, get_hdrq_cnt(rcd), get_hdrqentsize(rcd),
+ get_dma_rtail_setting(rcd) ?
"dma_rtail" : "nodma_rtail",
+ read_kctxt_csr(rcd->dd, rcd->ctxt, RCV_CTXT_CTRL),
+ read_kctxt_csr(rcd->dd, rcd->ctxt, RCV_CTXT_STATUS),
read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_HEAD) &
RCV_HDR_HEAD_HEAD_MASK,
- read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_TAIL));
+ read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_TAIL),
+ rcd->head);
init_packet(rcd, &packet);
init_ps_mdata(&mdata, &packet);
- while (1) {
+ for (i = 0; i < HFI1_RCVHDR_DUMP_MAX; i++) {
__le32 *rhf_addr = (__le32 *)rcd->rcvhdrq + mdata.ps_head +
rcd->rhf_offset;
struct ib_header *hdr;
@@ -1796,3 +1941,14 @@
[RHF_RCV_TYPE_INVALID6] = process_receive_invalid,
[RHF_RCV_TYPE_INVALID7] = process_receive_invalid,
};
+
+const rhf_rcv_function_ptr netdev_rhf_rcv_functions[] = {
+ [RHF_RCV_TYPE_EXPECTED] = process_receive_invalid,
+ [RHF_RCV_TYPE_EAGER] = process_receive_invalid,
+ [RHF_RCV_TYPE_IB] = hfi1_ipoib_ib_rcv,
+ [RHF_RCV_TYPE_ERROR] = process_receive_error,
+ [RHF_RCV_TYPE_BYPASS] = hfi1_vnic_bypass_rcv,
+ [RHF_RCV_TYPE_INVALID5] = process_receive_invalid,
+ [RHF_RCV_TYPE_INVALID6] = process_receive_invalid,
+ [RHF_RCV_TYPE_INVALID7] = process_receive_invalid,
+};
--
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