^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright(c) 2015-2020 Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This file is provided under a dual BSD/GPLv2 license. When using or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * redistributing this file, you may do so under either license.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * GPL LICENSE SUMMARY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * This program is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * it under the terms of version 2 of the GNU General Public License as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * published by the Free Software Foundation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * This program is distributed in the hope that it will be useful, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * BSD LICENSE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * modification, are permitted provided that the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * - Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * notice, this list of conditions and the following disclaimer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * - Redistributions in binary form must reproduce the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * notice, this list of conditions and the following disclaimer in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * the documentation and/or other materials provided with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * - Neither the name of Intel Corporation nor the names of its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * contributors may be used to endorse or promote products derived
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * from this software without specific prior written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/prefetch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <rdma/ib_verbs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #include "hfi.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include "trace.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #include "qp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #include "sdma.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #include "debugfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #include "vnic.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #include "fault.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #include "ipoib.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #include "netdev.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #undef pr_fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define pr_fmt(fmt) DRIVER_NAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * The size has to be longer than this string, so we can append
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * board/chip information to it in the initialization code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) const char ib_hfi1_version[] = HFI1_DRIVER_VERSION "\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) DEFINE_MUTEX(hfi1_mutex); /* general driver use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) unsigned int hfi1_max_mtu = HFI1_DEFAULT_MAX_MTU;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) module_param_named(max_mtu, hfi1_max_mtu, uint, S_IRUGO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) MODULE_PARM_DESC(max_mtu, "Set max MTU bytes, default is " __stringify(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) HFI1_DEFAULT_MAX_MTU));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) unsigned int hfi1_cu = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) module_param_named(cu, hfi1_cu, uint, S_IRUGO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) MODULE_PARM_DESC(cu, "Credit return units");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) unsigned long hfi1_cap_mask = HFI1_CAP_MASK_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static int hfi1_caps_set(const char *val, const struct kernel_param *kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) static int hfi1_caps_get(char *buffer, const struct kernel_param *kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static const struct kernel_param_ops cap_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .set = hfi1_caps_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .get = hfi1_caps_get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) module_param_cb(cap_mask, &cap_ops, &hfi1_cap_mask, S_IWUSR | S_IRUGO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) MODULE_PARM_DESC(cap_mask, "Bit mask of enabled/disabled HW features");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) MODULE_LICENSE("Dual BSD/GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MODULE_DESCRIPTION("Intel Omni-Path Architecture driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * MAX_PKT_RCV is the max # if packets processed per receive interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define MAX_PKT_RECV 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * MAX_PKT_THREAD_RCV is the max # of packets processed before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * the qp_wait_list queue is flushed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define MAX_PKT_RECV_THREAD (MAX_PKT_RECV * 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define EGR_HEAD_UPDATE_THRESHOLD 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct hfi1_ib_stats hfi1_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static int hfi1_caps_set(const char *val, const struct kernel_param *kp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) unsigned long *cap_mask_ptr = (unsigned long *)kp->arg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) cap_mask = *cap_mask_ptr, value, diff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) write_mask = ((HFI1_CAP_WRITABLE_MASK << HFI1_CAP_USER_SHIFT) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) HFI1_CAP_WRITABLE_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) ret = kstrtoul(val, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) pr_warn("Invalid module parameter value for 'cap_mask'\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /* Get the changed bits (except the locked bit) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) diff = value ^ (cap_mask & ~HFI1_CAP_LOCKED_SMASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /* Remove any bits that are not allowed to change after driver load */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (HFI1_CAP_LOCKED() && (diff & ~write_mask)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) pr_warn("Ignoring non-writable capability bits %#lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) diff & ~write_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) diff &= write_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /* Mask off any reserved bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) diff &= ~HFI1_CAP_RESERVED_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /* Clear any previously set and changing bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) cap_mask &= ~diff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /* Update the bits with the new capability */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) cap_mask |= (value & diff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /* Check for any kernel/user restrictions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) diff = (cap_mask & (HFI1_CAP_MUST_HAVE_KERN << HFI1_CAP_USER_SHIFT)) ^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) ((cap_mask & HFI1_CAP_MUST_HAVE_KERN) << HFI1_CAP_USER_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) cap_mask &= ~diff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /* Set the bitmask to the final set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) *cap_mask_ptr = cap_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static int hfi1_caps_get(char *buffer, const struct kernel_param *kp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) unsigned long cap_mask = *(unsigned long *)kp->arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) cap_mask &= ~HFI1_CAP_LOCKED_SMASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) cap_mask |= ((cap_mask & HFI1_CAP_K2U) << HFI1_CAP_USER_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return scnprintf(buffer, PAGE_SIZE, "0x%lx", cap_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct pci_dev *get_pci_dev(struct rvt_dev_info *rdi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) struct hfi1_ibdev *ibdev = container_of(rdi, struct hfi1_ibdev, rdi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct hfi1_devdata *dd = container_of(ibdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct hfi1_devdata, verbs_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return dd->pcidev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * Return count of units with at least one port ACTIVE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) int hfi1_count_active_units(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct hfi1_devdata *dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct hfi1_pportdata *ppd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) unsigned long index, flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) int pidx, nunits_active = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) xa_lock_irqsave(&hfi1_dev_table, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) xa_for_each(&hfi1_dev_table, index, dd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (!(dd->flags & HFI1_PRESENT) || !dd->kregbase1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) for (pidx = 0; pidx < dd->num_pports; ++pidx) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) ppd = dd->pport + pidx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (ppd->lid && ppd->linkup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) nunits_active++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) xa_unlock_irqrestore(&hfi1_dev_table, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) return nunits_active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * Get address of eager buffer from it's index (allocated in chunks, not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * contiguous).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static inline void *get_egrbuf(const struct hfi1_ctxtdata *rcd, u64 rhf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) u8 *update)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) u32 idx = rhf_egr_index(rhf), offset = rhf_egr_buf_offset(rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) *update |= !(idx & (rcd->egrbufs.threshold - 1)) && !offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return (void *)(((u64)(rcd->egrbufs.rcvtids[idx].addr)) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) (offset * RCV_BUF_BLOCK_SIZE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) static inline void *hfi1_get_header(struct hfi1_ctxtdata *rcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) __le32 *rhf_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) u32 offset = rhf_hdrq_offset(rhf_to_cpu(rhf_addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return (void *)(rhf_addr - rcd->rhf_offset + offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static inline struct ib_header *hfi1_get_msgheader(struct hfi1_ctxtdata *rcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) __le32 *rhf_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return (struct ib_header *)hfi1_get_header(rcd, rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static inline struct hfi1_16b_header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) *hfi1_get_16B_header(struct hfi1_ctxtdata *rcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) __le32 *rhf_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return (struct hfi1_16b_header *)hfi1_get_header(rcd, rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * Validate and encode the a given RcvArray Buffer size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * The function will check whether the given size falls within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * allowed size ranges for the respective type and, optionally,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * return the proper encoding.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) int hfi1_rcvbuf_validate(u32 size, u8 type, u16 *encoded)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (unlikely(!PAGE_ALIGNED(size)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) if (unlikely(size < MIN_EAGER_BUFFER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) if (size >
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) (type == PT_EAGER ? MAX_EAGER_BUFFER : MAX_EXPECTED_BUFFER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (encoded)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) *encoded = ilog2(size / PAGE_SIZE) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static void rcv_hdrerr(struct hfi1_ctxtdata *rcd, struct hfi1_pportdata *ppd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct ib_header *rhdr = packet->hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) u32 rte = rhf_rcv_type_err(packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) u32 mlid_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct hfi1_ibport *ibp = rcd_to_iport(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) struct hfi1_devdata *dd = ppd->dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct hfi1_ibdev *verbs_dev = &dd->verbs_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct rvt_dev_info *rdi = &verbs_dev->rdi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if ((packet->rhf & RHF_DC_ERR) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) hfi1_dbg_fault_suppress_err(verbs_dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (packet->rhf & RHF_ICRC_ERR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (packet->etype == RHF_RCV_TYPE_BYPASS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) u8 lnh = ib_get_lnh(rhdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) mlid_base = be16_to_cpu(IB_MULTICAST_LID_BASE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if (lnh == HFI1_LRH_BTH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) packet->ohdr = &rhdr->u.oth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) } else if (lnh == HFI1_LRH_GRH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) packet->ohdr = &rhdr->u.l.oth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) packet->grh = &rhdr->u.l.grh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (packet->rhf & RHF_TID_ERR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) /* For TIDERR and RC QPs preemptively schedule a NAK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) u32 tlen = rhf_pkt_len(packet->rhf); /* in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) u32 dlid = ib_get_dlid(rhdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) u32 qp_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /* Sanity check packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) if (tlen < 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) /* Check for GRH */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (packet->grh) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) u32 vtf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) struct ib_grh *grh = packet->grh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (grh->next_hdr != IB_GRH_NEXT_HDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) vtf = be32_to_cpu(grh->version_tclass_flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if ((vtf >> IB_GRH_VERSION_SHIFT) != IB_GRH_VERSION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) /* Get the destination QP number. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) qp_num = ib_bth_get_qpn(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (dlid < mlid_base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) struct rvt_qp *qp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) qp = rvt_lookup_qpn(rdi, &ibp->rvp, qp_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (!qp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * Handle only RC QPs - for other QP types drop error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) * packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) spin_lock_irqsave(&qp->r_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /* Check for valid receive state. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (!(ib_rvt_state_ops[qp->state] &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) RVT_PROCESS_RECV_OK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) ibp->rvp.n_pkt_drops++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) switch (qp->ibqp.qp_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) case IB_QPT_RC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) hfi1_rc_hdrerr(rcd, packet, qp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) /* For now don't handle any other QP types */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) spin_unlock_irqrestore(&qp->r_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) } /* Unicast QP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) } /* Valid packet with TIDErr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /* handle "RcvTypeErr" flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) switch (rte) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) case RHF_RTE_ERROR_OP_CODE_ERR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) void *ebuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) u8 opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (rhf_use_egr_bfr(packet->rhf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) ebuf = packet->ebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (!ebuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) goto drop; /* this should never happen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) opcode = ib_bth_get_opcode(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (opcode == IB_OPCODE_CNP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) * Only in pre-B0 h/w is the CNP_OPCODE handled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) * via this code path.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct rvt_qp *qp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) u32 lqpn, rqpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) u16 rlid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) u8 svc_type, sl, sc5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) sc5 = hfi1_9B_get_sc5(rhdr, packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) sl = ibp->sc_to_sl[sc5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) lqpn = ib_bth_get_qpn(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) qp = rvt_lookup_qpn(rdi, &ibp->rvp, lqpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (!qp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) switch (qp->ibqp.qp_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) case IB_QPT_UD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) rlid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) rqpn = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) svc_type = IB_CC_SVCTYPE_UD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) case IB_QPT_UC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) rlid = ib_get_slid(rhdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) rqpn = qp->remote_qpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) svc_type = IB_CC_SVCTYPE_UC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) process_becn(ppd, sl, rlid, lqpn, rqpn, svc_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) packet->rhf &= ~RHF_RCV_TYPE_ERR_SMASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) drop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) static inline void init_packet(struct hfi1_ctxtdata *rcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) packet->rsize = get_hdrqentsize(rcd); /* words */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) packet->maxcnt = get_hdrq_cnt(rcd) * packet->rsize; /* words */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) packet->rcd = rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) packet->updegr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) packet->etail = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) packet->rhf_addr = get_rhf_addr(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) packet->rhf = rhf_to_cpu(packet->rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) packet->rhqoff = hfi1_rcd_head(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) packet->numpkt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) /* We support only two types - 9B and 16B for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) static const hfi1_handle_cnp hfi1_handle_cnp_tbl[2] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) [HFI1_PKT_TYPE_9B] = &return_cnp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) [HFI1_PKT_TYPE_16B] = &return_cnp_16B
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) * hfi1_process_ecn_slowpath - Process FECN or BECN bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) * @qp: The packet's destination QP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) * @pkt: The packet itself.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) * @prescan: Is the caller the RXQ prescan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) * Process the packet's FECN or BECN bits. By now, the packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) * has already been evaluated whether processing of those bit should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) * be done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) * The significance of the @prescan argument is that if the caller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * is the RXQ prescan, a CNP will be send out instead of waiting for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * normal packet processing to send an ACK with BECN set (or a CNP).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) bool hfi1_process_ecn_slowpath(struct rvt_qp *qp, struct hfi1_packet *pkt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) bool prescan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) struct hfi1_ibport *ibp = to_iport(qp->ibqp.device, qp->port_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) struct ib_other_headers *ohdr = pkt->ohdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) struct ib_grh *grh = pkt->grh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) u32 rqpn = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) u16 pkey;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) u32 rlid, slid, dlid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) u8 hdr_type, sc, svc_type, opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) bool is_mcast = false, ignore_fecn = false, do_cnp = false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) fecn, becn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) /* can be called from prescan */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) if (pkt->etype == RHF_RCV_TYPE_BYPASS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) pkey = hfi1_16B_get_pkey(pkt->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) sc = hfi1_16B_get_sc(pkt->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) dlid = hfi1_16B_get_dlid(pkt->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) slid = hfi1_16B_get_slid(pkt->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) is_mcast = hfi1_is_16B_mcast(dlid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) opcode = ib_bth_get_opcode(ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) hdr_type = HFI1_PKT_TYPE_16B;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) fecn = hfi1_16B_get_fecn(pkt->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) becn = hfi1_16B_get_becn(pkt->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) pkey = ib_bth_get_pkey(ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) sc = hfi1_9B_get_sc5(pkt->hdr, pkt->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) dlid = qp->ibqp.qp_type != IB_QPT_UD ? ib_get_dlid(pkt->hdr) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) ppd->lid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) slid = ib_get_slid(pkt->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) is_mcast = (dlid > be16_to_cpu(IB_MULTICAST_LID_BASE)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) (dlid != be16_to_cpu(IB_LID_PERMISSIVE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) opcode = ib_bth_get_opcode(ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) hdr_type = HFI1_PKT_TYPE_9B;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) fecn = ib_bth_get_fecn(ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) becn = ib_bth_get_becn(ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) switch (qp->ibqp.qp_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) case IB_QPT_UD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) rlid = slid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) rqpn = ib_get_sqpn(pkt->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) svc_type = IB_CC_SVCTYPE_UD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) case IB_QPT_SMI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) case IB_QPT_GSI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) rlid = slid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) rqpn = ib_get_sqpn(pkt->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) svc_type = IB_CC_SVCTYPE_UD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) case IB_QPT_UC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) rlid = rdma_ah_get_dlid(&qp->remote_ah_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) rqpn = qp->remote_qpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) svc_type = IB_CC_SVCTYPE_UC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) case IB_QPT_RC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) rlid = rdma_ah_get_dlid(&qp->remote_ah_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) rqpn = qp->remote_qpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) svc_type = IB_CC_SVCTYPE_RC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) ignore_fecn = is_mcast || (opcode == IB_OPCODE_CNP) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) (opcode == IB_OPCODE_RC_ACKNOWLEDGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) * ACKNOWLEDGE packets do not get a CNP but this will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * guarded by ignore_fecn above.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) do_cnp = prescan ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) (opcode >= IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) opcode <= IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) opcode == TID_OP(READ_RESP) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) opcode == TID_OP(ACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) /* Call appropriate CNP handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (!ignore_fecn && do_cnp && fecn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) hfi1_handle_cnp_tbl[hdr_type](ibp, qp, rqpn, pkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) dlid, rlid, sc, grh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (becn) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) u32 lqpn = be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) u8 sl = ibp->sc_to_sl[sc];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) process_becn(ppd, sl, rlid, lqpn, rqpn, svc_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) return !ignore_fecn && fecn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) struct ps_mdata {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) struct hfi1_ctxtdata *rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) u32 rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) u32 maxcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) u32 ps_head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) u32 ps_tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) u32 ps_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) static inline void init_ps_mdata(struct ps_mdata *mdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct hfi1_ctxtdata *rcd = packet->rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) mdata->rcd = rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) mdata->rsize = packet->rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) mdata->maxcnt = packet->maxcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) mdata->ps_head = packet->rhqoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) if (get_dma_rtail_setting(rcd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) mdata->ps_tail = get_rcvhdrtail(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (rcd->ctxt == HFI1_CTRL_CTXT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) mdata->ps_seq = hfi1_seq_cnt(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) mdata->ps_seq = 0; /* not used with DMA_RTAIL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) mdata->ps_tail = 0; /* used only with DMA_RTAIL*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) mdata->ps_seq = hfi1_seq_cnt(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) static inline int ps_done(struct ps_mdata *mdata, u64 rhf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct hfi1_ctxtdata *rcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (get_dma_rtail_setting(rcd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) return mdata->ps_head == mdata->ps_tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) return mdata->ps_seq != rhf_rcv_seq(rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) static inline int ps_skip(struct ps_mdata *mdata, u64 rhf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) struct hfi1_ctxtdata *rcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * Control context can potentially receive an invalid rhf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) * Drop such packets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if ((rcd->ctxt == HFI1_CTRL_CTXT) && (mdata->ps_head != mdata->ps_tail))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) return mdata->ps_seq != rhf_rcv_seq(rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) static inline void update_ps_mdata(struct ps_mdata *mdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) struct hfi1_ctxtdata *rcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) mdata->ps_head += mdata->rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (mdata->ps_head >= mdata->maxcnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) mdata->ps_head = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) /* Control context must do seq counting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) if (!get_dma_rtail_setting(rcd) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) rcd->ctxt == HFI1_CTRL_CTXT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) mdata->ps_seq = hfi1_seq_incr_wrap(mdata->ps_seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) * prescan_rxq - search through the receive queue looking for packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) * containing Excplicit Congestion Notifications (FECNs, or BECNs).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) * When an ECN is found, process the Congestion Notification, and toggle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * it off.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) * This is declared as a macro to allow quick checking of the port to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) * the overhead of a function call if not enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) #define prescan_rxq(rcd, packet) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) if (rcd->ppd->cc_prescan) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) __prescan_rxq(packet); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) static void __prescan_rxq(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) struct hfi1_ctxtdata *rcd = packet->rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) struct ps_mdata mdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) init_ps_mdata(&mdata, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) struct hfi1_ibport *ibp = rcd_to_iport(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) __le32 *rhf_addr = (__le32 *)rcd->rcvhdrq + mdata.ps_head +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) packet->rcd->rhf_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) struct rvt_qp *qp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) struct ib_header *hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) struct rvt_dev_info *rdi = &rcd->dd->verbs_dev.rdi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) u64 rhf = rhf_to_cpu(rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) u32 etype = rhf_rcv_type(rhf), qpn, bth1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) u8 lnh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) if (ps_done(&mdata, rhf, rcd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (ps_skip(&mdata, rhf, rcd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) if (etype != RHF_RCV_TYPE_IB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) packet->hdr = hfi1_get_msgheader(packet->rcd, rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) hdr = packet->hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) lnh = ib_get_lnh(hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) if (lnh == HFI1_LRH_BTH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) packet->ohdr = &hdr->u.oth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) packet->grh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) } else if (lnh == HFI1_LRH_GRH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) packet->ohdr = &hdr->u.l.oth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) packet->grh = &hdr->u.l.grh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) goto next; /* just in case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) if (!hfi1_may_ecn(packet))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) bth1 = be32_to_cpu(packet->ohdr->bth[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) qpn = bth1 & RVT_QPN_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) qp = rvt_lookup_qpn(rdi, &ibp->rvp, qpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) if (!qp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) hfi1_process_ecn_slowpath(qp, packet, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) /* turn off BECN, FECN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) bth1 &= ~(IB_FECN_SMASK | IB_BECN_SMASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) packet->ohdr->bth[1] = cpu_to_be32(bth1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) next:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) update_ps_mdata(&mdata, rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) static void process_rcv_qp_work(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) struct rvt_qp *qp, *nqp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) struct hfi1_ctxtdata *rcd = packet->rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * Iterate over all QPs waiting to respond.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) * The list won't change since the IRQ is only run on one CPU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) list_for_each_entry_safe(qp, nqp, &rcd->qp_wait_list, rspwait) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) list_del_init(&qp->rspwait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (qp->r_flags & RVT_R_RSP_NAK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) qp->r_flags &= ~RVT_R_RSP_NAK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) packet->qp = qp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) hfi1_send_rc_ack(packet, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) if (qp->r_flags & RVT_R_RSP_SEND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) qp->r_flags &= ~RVT_R_RSP_SEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) spin_lock_irqsave(&qp->s_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (ib_rvt_state_ops[qp->state] &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) RVT_PROCESS_OR_FLUSH_SEND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) hfi1_schedule_send(qp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) spin_unlock_irqrestore(&qp->s_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) rvt_put_qp(qp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) static noinline int max_packet_exceeded(struct hfi1_packet *packet, int thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) if (thread) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) if ((packet->numpkt & (MAX_PKT_RECV_THREAD - 1)) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) /* allow defered processing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) process_rcv_qp_work(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) cond_resched();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) return RCV_PKT_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) this_cpu_inc(*packet->rcd->dd->rcv_limit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return RCV_PKT_LIMIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) static inline int check_max_packet(struct hfi1_packet *packet, int thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) int ret = RCV_PKT_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) if (unlikely((packet->numpkt & (MAX_PKT_RECV - 1)) == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) ret = max_packet_exceeded(packet, thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) static noinline int skip_rcv_packet(struct hfi1_packet *packet, int thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) packet->rcd->dd->ctx0_seq_drop++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) /* Set up for the next packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) packet->rhqoff += packet->rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) if (packet->rhqoff >= packet->maxcnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) packet->rhqoff = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) packet->numpkt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) ret = check_max_packet(packet, thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) packet->rhf_addr = (__le32 *)packet->rcd->rcvhdrq + packet->rhqoff +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) packet->rcd->rhf_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) packet->rhf = rhf_to_cpu(packet->rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) static void process_rcv_packet_napi(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) packet->etype = rhf_rcv_type(packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) /* total length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) packet->tlen = rhf_pkt_len(packet->rhf); /* in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) /* retrieve eager buffer details */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) packet->etail = rhf_egr_index(packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) packet->ebuf = get_egrbuf(packet->rcd, packet->rhf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) &packet->updegr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) * Prefetch the contents of the eager buffer. It is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) * OK to send a negative length to prefetch_range().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) * The +2 is the size of the RHF.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) prefetch_range(packet->ebuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) packet->tlen - ((packet->rcd->rcvhdrqentsize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) (rhf_hdrq_offset(packet->rhf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) + 2)) * 4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) packet->rcd->rhf_rcv_function_map[packet->etype](packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) packet->numpkt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) /* Set up for the next packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) packet->rhqoff += packet->rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) if (packet->rhqoff >= packet->maxcnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) packet->rhqoff = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) packet->rhf_addr = (__le32 *)packet->rcd->rcvhdrq + packet->rhqoff +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) packet->rcd->rhf_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) packet->rhf = rhf_to_cpu(packet->rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) static inline int process_rcv_packet(struct hfi1_packet *packet, int thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) packet->etype = rhf_rcv_type(packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) /* total length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) packet->tlen = rhf_pkt_len(packet->rhf); /* in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) /* retrieve eager buffer details */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) packet->ebuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) if (rhf_use_egr_bfr(packet->rhf)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) packet->etail = rhf_egr_index(packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) packet->ebuf = get_egrbuf(packet->rcd, packet->rhf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) &packet->updegr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) * Prefetch the contents of the eager buffer. It is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) * OK to send a negative length to prefetch_range().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) * The +2 is the size of the RHF.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) prefetch_range(packet->ebuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) packet->tlen - ((get_hdrqentsize(packet->rcd) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) (rhf_hdrq_offset(packet->rhf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) + 2)) * 4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) * Call a type specific handler for the packet. We
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) * should be able to trust that etype won't be beyond
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) * the range of valid indexes. If so something is really
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) * wrong and we can probably just let things come
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) * crashing down. There is no need to eat another
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * comparison in this performance critical code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) packet->rcd->rhf_rcv_function_map[packet->etype](packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) packet->numpkt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) /* Set up for the next packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) packet->rhqoff += packet->rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) if (packet->rhqoff >= packet->maxcnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) packet->rhqoff = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) ret = check_max_packet(packet, thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) packet->rhf_addr = (__le32 *)packet->rcd->rcvhdrq + packet->rhqoff +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) packet->rcd->rhf_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) packet->rhf = rhf_to_cpu(packet->rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) static inline void process_rcv_update(int last, struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) * Update head regs etc., every 16 packets, if not last pkt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) * to help prevent rcvhdrq overflows, when many packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) * are processed and queue is nearly full.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) * Don't request an interrupt for intermediate updates.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) if (!last && !(packet->numpkt & 0xf)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) update_usrhead(packet->rcd, packet->rhqoff, packet->updegr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) packet->etail, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) packet->updegr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) packet->grh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) static inline void finish_packet(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) * Nothing we need to free for the packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) * The only thing we need to do is a final update and call for an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) * interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) update_usrhead(packet->rcd, hfi1_rcd_head(packet->rcd), packet->updegr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) packet->etail, rcv_intr_dynamic, packet->numpkt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) * handle_receive_interrupt_napi_fp - receive a packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) * @rcd: the context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) * @budget: polling budget
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) * Called from interrupt handler for receive interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) * This is the fast path interrupt handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) * when executing napi soft irq environment.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) int handle_receive_interrupt_napi_fp(struct hfi1_ctxtdata *rcd, int budget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) struct hfi1_packet packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) init_packet(rcd, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) while (packet.numpkt < budget) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) process_rcv_packet_napi(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) if (hfi1_seq_incr(rcd, rhf_rcv_seq(packet.rhf)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) process_rcv_update(0, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) hfi1_set_rcd_head(rcd, packet.rhqoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) bail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) finish_packet(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) return packet.numpkt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) * Handle receive interrupts when using the no dma rtail option.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) int handle_receive_interrupt_nodma_rtail(struct hfi1_ctxtdata *rcd, int thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) int last = RCV_PKT_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) struct hfi1_packet packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) init_packet(rcd, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) last = RCV_PKT_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) prescan_rxq(rcd, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) while (last == RCV_PKT_OK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) last = process_rcv_packet(&packet, thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) if (hfi1_seq_incr(rcd, rhf_rcv_seq(packet.rhf)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) last = RCV_PKT_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) process_rcv_update(last, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) process_rcv_qp_work(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) hfi1_set_rcd_head(rcd, packet.rhqoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) bail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) finish_packet(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) return last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) int handle_receive_interrupt_dma_rtail(struct hfi1_ctxtdata *rcd, int thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) u32 hdrqtail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) int last = RCV_PKT_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) struct hfi1_packet packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) init_packet(rcd, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) hdrqtail = get_rcvhdrtail(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) if (packet.rhqoff == hdrqtail) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) last = RCV_PKT_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) smp_rmb(); /* prevent speculative reads of dma'ed hdrq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) prescan_rxq(rcd, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) while (last == RCV_PKT_OK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) last = process_rcv_packet(&packet, thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) if (packet.rhqoff == hdrqtail)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) last = RCV_PKT_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) process_rcv_update(last, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) process_rcv_qp_work(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) hfi1_set_rcd_head(rcd, packet.rhqoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) bail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) finish_packet(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) return last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) static void set_all_fastpath(struct hfi1_devdata *dd, struct hfi1_ctxtdata *rcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) u16 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) * For dynamically allocated kernel contexts (like vnic) switch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) * interrupt handler only for that context. Otherwise, switch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) * interrupt handler for all statically allocated kernel contexts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) if (rcd->ctxt >= dd->first_dyn_alloc_ctxt && !rcd->is_vnic) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) hfi1_rcd_get(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) hfi1_set_fast(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) hfi1_rcd_put(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) for (i = HFI1_CTRL_CTXT + 1; i < dd->num_rcv_contexts; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) rcd = hfi1_rcd_get_by_index(dd, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) if (rcd && (i < dd->first_dyn_alloc_ctxt || rcd->is_vnic))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) hfi1_set_fast(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) hfi1_rcd_put(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) void set_all_slowpath(struct hfi1_devdata *dd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) struct hfi1_ctxtdata *rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) u16 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) /* HFI1_CTRL_CTXT must always use the slow path interrupt handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) for (i = HFI1_CTRL_CTXT + 1; i < dd->num_rcv_contexts; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) rcd = hfi1_rcd_get_by_index(dd, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) if (!rcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) if (i < dd->first_dyn_alloc_ctxt || rcd->is_vnic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) rcd->do_interrupt = rcd->slow_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) hfi1_rcd_put(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) static bool __set_armed_to_active(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) u8 etype = rhf_rcv_type(packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) u8 sc = SC15_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) if (etype == RHF_RCV_TYPE_IB) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) struct ib_header *hdr = hfi1_get_msgheader(packet->rcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) packet->rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) sc = hfi1_9B_get_sc5(hdr, packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) } else if (etype == RHF_RCV_TYPE_BYPASS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) struct hfi1_16b_header *hdr = hfi1_get_16B_header(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) packet->rcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) packet->rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) sc = hfi1_16B_get_sc(hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) if (sc != SC15_PACKET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) int hwstate = driver_lstate(packet->rcd->ppd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) struct work_struct *lsaw =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) &packet->rcd->ppd->linkstate_active_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) if (hwstate != IB_PORT_ACTIVE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) dd_dev_info(packet->rcd->dd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) "Unexpected link state %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) opa_lstate_name(hwstate));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) queue_work(packet->rcd->ppd->link_wq, lsaw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) * armed to active - the fast path for armed to active
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) * @packet: the packet structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) * Return true if packet processing needs to bail.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) static bool set_armed_to_active(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) if (likely(packet->rcd->ppd->host_link_state != HLS_UP_ARMED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) return __set_armed_to_active(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) * handle_receive_interrupt - receive a packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) * @rcd: the context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) * Called from interrupt handler for errors or receive interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) * This is the slow path interrupt handler.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) int handle_receive_interrupt(struct hfi1_ctxtdata *rcd, int thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) struct hfi1_devdata *dd = rcd->dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) u32 hdrqtail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) int needset, last = RCV_PKT_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) struct hfi1_packet packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) int skip_pkt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) if (!rcd->rcvhdrq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) return RCV_PKT_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) /* Control context will always use the slow path interrupt handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) needset = (rcd->ctxt == HFI1_CTRL_CTXT) ? 0 : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) init_packet(rcd, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) if (!get_dma_rtail_setting(rcd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) last = RCV_PKT_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) hdrqtail = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) hdrqtail = get_rcvhdrtail(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) if (packet.rhqoff == hdrqtail) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) last = RCV_PKT_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) smp_rmb(); /* prevent speculative reads of dma'ed hdrq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) * Control context can potentially receive an invalid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) * rhf. Drop such packets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) if (rcd->ctxt == HFI1_CTRL_CTXT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) skip_pkt = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) prescan_rxq(rcd, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) while (last == RCV_PKT_OK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) if (hfi1_need_drop(dd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) /* On to the next packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) packet.rhqoff += packet.rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) packet.rhf_addr = (__le32 *)rcd->rcvhdrq +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) packet.rhqoff +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) rcd->rhf_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) packet.rhf = rhf_to_cpu(packet.rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) } else if (skip_pkt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) last = skip_rcv_packet(&packet, thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) skip_pkt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) if (set_armed_to_active(&packet))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) last = process_rcv_packet(&packet, thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) if (!get_dma_rtail_setting(rcd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) if (hfi1_seq_incr(rcd, rhf_rcv_seq(packet.rhf)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) last = RCV_PKT_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) if (packet.rhqoff == hdrqtail)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) last = RCV_PKT_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) * Control context can potentially receive an invalid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) * rhf. Drop such packets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) if (rcd->ctxt == HFI1_CTRL_CTXT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) bool lseq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) lseq = hfi1_seq_incr(rcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) rhf_rcv_seq(packet.rhf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) if (!last && lseq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) skip_pkt = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) if (needset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) needset = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) set_all_fastpath(dd, rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) process_rcv_update(last, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) process_rcv_qp_work(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) hfi1_set_rcd_head(rcd, packet.rhqoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) bail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) * Always write head at end, and setup rcv interrupt, even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) * if no packets were processed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) finish_packet(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) return last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) * handle_receive_interrupt_napi_sp - receive a packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) * @rcd: the context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) * @budget: polling budget
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) * Called from interrupt handler for errors or receive interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) * This is the slow path interrupt handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) * when executing napi soft irq environment.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) int handle_receive_interrupt_napi_sp(struct hfi1_ctxtdata *rcd, int budget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) struct hfi1_devdata *dd = rcd->dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) int last = RCV_PKT_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) bool needset = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) struct hfi1_packet packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) init_packet(rcd, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) if (last_rcv_seq(rcd, rhf_rcv_seq(packet.rhf)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) while (last != RCV_PKT_DONE && packet.numpkt < budget) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) if (hfi1_need_drop(dd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) /* On to the next packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) packet.rhqoff += packet.rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) packet.rhf_addr = (__le32 *)rcd->rcvhdrq +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) packet.rhqoff +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) rcd->rhf_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) packet.rhf = rhf_to_cpu(packet.rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) if (set_armed_to_active(&packet))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) process_rcv_packet_napi(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) if (hfi1_seq_incr(rcd, rhf_rcv_seq(packet.rhf)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) last = RCV_PKT_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) if (needset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) needset = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) set_all_fastpath(dd, rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) process_rcv_update(last, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) hfi1_set_rcd_head(rcd, packet.rhqoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) bail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) * Always write head at end, and setup rcv interrupt, even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) * if no packets were processed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) finish_packet(&packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) return packet.numpkt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) * We may discover in the interrupt that the hardware link state has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) * changed from ARMED to ACTIVE (due to the arrival of a non-SC15 packet),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) * and we need to update the driver's notion of the link state. We cannot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) * run set_link_state from interrupt context, so we queue this function on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) * a workqueue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) * We delay the regular interrupt processing until after the state changes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) * so that the link will be in the correct state by the time any application
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) * we wake up attempts to send a reply to any message it received.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) * (Subsequent receive interrupts may possibly force the wakeup before we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) * update the link state.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) * The rcd is freed in hfi1_free_ctxtdata after hfi1_postinit_cleanup invokes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) * dd->f_cleanup(dd) to disable the interrupt handler and flush workqueues,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) * so we're safe from use-after-free of the rcd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) void receive_interrupt_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) struct hfi1_pportdata *ppd = container_of(work, struct hfi1_pportdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) linkstate_active_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) struct hfi1_devdata *dd = ppd->dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) struct hfi1_ctxtdata *rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) u16 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) /* Received non-SC15 packet implies neighbor_normal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) ppd->neighbor_normal = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) set_link_state(ppd, HLS_UP_ACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) * Interrupt all statically allocated kernel contexts that could
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) * have had an interrupt during auto activation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) for (i = HFI1_CTRL_CTXT; i < dd->first_dyn_alloc_ctxt; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) rcd = hfi1_rcd_get_by_index(dd, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) if (rcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) force_recv_intr(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) hfi1_rcd_put(rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) * Convert a given MTU size to the on-wire MAD packet enumeration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) * Return -1 if the size is invalid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) int mtu_to_enum(u32 mtu, int default_if_bad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) switch (mtu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) case 0: return OPA_MTU_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) case 256: return OPA_MTU_256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) case 512: return OPA_MTU_512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) case 1024: return OPA_MTU_1024;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) case 2048: return OPA_MTU_2048;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) case 4096: return OPA_MTU_4096;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) case 8192: return OPA_MTU_8192;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) case 10240: return OPA_MTU_10240;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) return default_if_bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) u16 enum_to_mtu(int mtu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) switch (mtu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) case OPA_MTU_0: return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) case OPA_MTU_256: return 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) case OPA_MTU_512: return 512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) case OPA_MTU_1024: return 1024;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) case OPA_MTU_2048: return 2048;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) case OPA_MTU_4096: return 4096;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) case OPA_MTU_8192: return 8192;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) case OPA_MTU_10240: return 10240;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) default: return 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) * set_mtu - set the MTU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) * @ppd: the per port data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) * We can handle "any" incoming size, the issue here is whether we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) * need to restrict our outgoing size. We do not deal with what happens
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) * to programs that are already running when the size changes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) int set_mtu(struct hfi1_pportdata *ppd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) struct hfi1_devdata *dd = ppd->dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) int i, drain, ret = 0, is_up = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) ppd->ibmtu = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) for (i = 0; i < ppd->vls_supported; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) if (ppd->ibmtu < dd->vld[i].mtu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) ppd->ibmtu = dd->vld[i].mtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) ppd->ibmaxlen = ppd->ibmtu + lrh_max_header_bytes(ppd->dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) mutex_lock(&ppd->hls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) if (ppd->host_link_state == HLS_UP_INIT ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) ppd->host_link_state == HLS_UP_ARMED ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) ppd->host_link_state == HLS_UP_ACTIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) is_up = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) drain = !is_ax(dd) && is_up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) if (drain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) * MTU is specified per-VL. To ensure that no packet gets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) * stuck (due, e.g., to the MTU for the packet's VL being
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) * reduced), empty the per-VL FIFOs before adjusting MTU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) ret = stop_drain_data_vls(dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) dd_dev_err(dd, "%s: cannot stop/drain VLs - refusing to change per-VL MTUs\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_MTU, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) if (drain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) open_fill_data_vls(dd); /* reopen all VLs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) mutex_unlock(&ppd->hls_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) int hfi1_set_lid(struct hfi1_pportdata *ppd, u32 lid, u8 lmc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) struct hfi1_devdata *dd = ppd->dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) ppd->lid = lid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) ppd->lmc = lmc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LIDLMC, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) dd_dev_info(dd, "port %u: got a lid: 0x%x\n", ppd->port, lid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) void shutdown_led_override(struct hfi1_pportdata *ppd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) struct hfi1_devdata *dd = ppd->dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) * This pairs with the memory barrier in hfi1_start_led_override to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) * ensure that we read the correct state of LED beaconing represented
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) * by led_override_timer_active
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) smp_rmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) if (atomic_read(&ppd->led_override_timer_active)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) del_timer_sync(&ppd->led_override_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) atomic_set(&ppd->led_override_timer_active, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) /* Ensure the atomic_set is visible to all CPUs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) smp_wmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) /* Hand control of the LED to the DC for normal operation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) write_csr(dd, DCC_CFG_LED_CNTRL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) static void run_led_override(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) struct hfi1_pportdata *ppd = from_timer(ppd, t, led_override_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) struct hfi1_devdata *dd = ppd->dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) unsigned long timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) int phase_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) if (!(dd->flags & HFI1_INITTED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) phase_idx = ppd->led_override_phase & 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) setextled(dd, phase_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) timeout = ppd->led_override_vals[phase_idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) /* Set up for next phase */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) ppd->led_override_phase = !ppd->led_override_phase;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) mod_timer(&ppd->led_override_timer, jiffies + timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) * To have the LED blink in a particular pattern, provide timeon and timeoff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) * in milliseconds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) * To turn off custom blinking and return to normal operation, use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) * shutdown_led_override()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) void hfi1_start_led_override(struct hfi1_pportdata *ppd, unsigned int timeon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) unsigned int timeoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) if (!(ppd->dd->flags & HFI1_INITTED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) /* Convert to jiffies for direct use in timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) ppd->led_override_vals[0] = msecs_to_jiffies(timeoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) ppd->led_override_vals[1] = msecs_to_jiffies(timeon);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) /* Arbitrarily start from LED on phase */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) ppd->led_override_phase = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) * If the timer has not already been started, do so. Use a "quick"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) * timeout so the handler will be called soon to look at our request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) if (!timer_pending(&ppd->led_override_timer)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) timer_setup(&ppd->led_override_timer, run_led_override, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) ppd->led_override_timer.expires = jiffies + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) add_timer(&ppd->led_override_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) atomic_set(&ppd->led_override_timer_active, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) /* Ensure the atomic_set is visible to all CPUs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) smp_wmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) * hfi1_reset_device - reset the chip if possible
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) * @unit: the device to reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) * Whether or not reset is successful, we attempt to re-initialize the chip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) * (that is, much like a driver unload/reload). We clear the INITTED flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) * so that the various entry points will fail until we reinitialize. For
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) * now, we only allow this if no user contexts are open that use chip resources
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) int hfi1_reset_device(int unit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) struct hfi1_devdata *dd = hfi1_lookup(unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) struct hfi1_pportdata *ppd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) int pidx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) if (!dd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) dd_dev_info(dd, "Reset on unit %u requested\n", unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) if (!dd->kregbase1 || !(dd->flags & HFI1_PRESENT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) dd_dev_info(dd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) "Invalid unit number %u or not initialized or not present\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) ret = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) /* If there are any user/vnic contexts, we cannot reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) mutex_lock(&hfi1_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) if (dd->rcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) if (hfi1_stats.sps_ctxts) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) mutex_unlock(&hfi1_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) goto bail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) mutex_unlock(&hfi1_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) for (pidx = 0; pidx < dd->num_pports; ++pidx) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) ppd = dd->pport + pidx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) shutdown_led_override(ppd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) if (dd->flags & HFI1_HAS_SEND_DMA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) sdma_exit(dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) hfi1_reset_cpu_counters(dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) ret = hfi1_init(dd, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) dd_dev_err(dd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) "Reinitialize unit %u after reset failed with %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) unit, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) dd_dev_info(dd, "Reinitialized unit %u after resetting\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) bail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) static inline void hfi1_setup_ib_header(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) packet->hdr = (struct hfi1_ib_message_header *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) hfi1_get_msgheader(packet->rcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) packet->rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) packet->hlen = (u8 *)packet->rhf_addr - (u8 *)packet->hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) static int hfi1_bypass_ingress_pkt_check(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) struct hfi1_pportdata *ppd = packet->rcd->ppd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) /* slid and dlid cannot be 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) if ((!packet->slid) || (!packet->dlid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) /* Compare port lid with incoming packet dlid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) if ((!(hfi1_is_16B_mcast(packet->dlid))) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) (packet->dlid !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) opa_get_lid(be32_to_cpu(OPA_LID_PERMISSIVE), 16B))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) if ((packet->dlid & ~((1 << ppd->lmc) - 1)) != ppd->lid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) /* No multicast packets with SC15 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) if ((hfi1_is_16B_mcast(packet->dlid)) && (packet->sc == 0xF))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) /* Packets with permissive DLID always on SC15 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) if ((packet->dlid == opa_get_lid(be32_to_cpu(OPA_LID_PERMISSIVE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) 16B)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) (packet->sc != 0xF))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) static int hfi1_setup_9B_packet(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) struct hfi1_ibport *ibp = rcd_to_iport(packet->rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) struct ib_header *hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) u8 lnh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) hfi1_setup_ib_header(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) hdr = packet->hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) lnh = ib_get_lnh(hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) if (lnh == HFI1_LRH_BTH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) packet->ohdr = &hdr->u.oth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) packet->grh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) } else if (lnh == HFI1_LRH_GRH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) u32 vtf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) packet->ohdr = &hdr->u.l.oth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) packet->grh = &hdr->u.l.grh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) if (packet->grh->next_hdr != IB_GRH_NEXT_HDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) vtf = be32_to_cpu(packet->grh->version_tclass_flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) if ((vtf >> IB_GRH_VERSION_SHIFT) != IB_GRH_VERSION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) /* Query commonly used fields from packet header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) packet->payload = packet->ebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) packet->opcode = ib_bth_get_opcode(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) packet->slid = ib_get_slid(hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) packet->dlid = ib_get_dlid(hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) if (unlikely((packet->dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) (packet->dlid != be16_to_cpu(IB_LID_PERMISSIVE))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) packet->dlid += opa_get_mcast_base(OPA_MCAST_NR) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) be16_to_cpu(IB_MULTICAST_LID_BASE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) packet->sl = ib_get_sl(hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) packet->sc = hfi1_9B_get_sc5(hdr, packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) packet->pad = ib_bth_get_pad(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) packet->extra_byte = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) packet->pkey = ib_bth_get_pkey(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) packet->migrated = ib_bth_is_migration(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) drop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) ibp->rvp.n_pkt_drops++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) static int hfi1_setup_bypass_packet(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) * Bypass packets have a different header/payload split
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) * compared to an IB packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) * Current split is set such that 16 bytes of the actual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) * header is in the header buffer and the remining is in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) * the eager buffer. We chose 16 since hfi1 driver only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) * supports 16B bypass packets and we will be able to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) * receive the entire LRH with such a split.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) struct hfi1_ctxtdata *rcd = packet->rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) struct hfi1_pportdata *ppd = rcd->ppd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) struct hfi1_ibport *ibp = &ppd->ibport_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) u8 l4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) packet->hdr = (struct hfi1_16b_header *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) hfi1_get_16B_header(packet->rcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) packet->rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) l4 = hfi1_16B_get_l4(packet->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) if (l4 == OPA_16B_L4_IB_LOCAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) packet->ohdr = packet->ebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) packet->grh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) packet->opcode = ib_bth_get_opcode(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) packet->pad = hfi1_16B_bth_get_pad(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) /* hdr_len_by_opcode already has an IB LRH factored in */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) packet->hlen = hdr_len_by_opcode[packet->opcode] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) (LRH_16B_BYTES - LRH_9B_BYTES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) packet->migrated = opa_bth_is_migration(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) } else if (l4 == OPA_16B_L4_IB_GLOBAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) u32 vtf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) u8 grh_len = sizeof(struct ib_grh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) packet->ohdr = packet->ebuf + grh_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) packet->grh = packet->ebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) packet->opcode = ib_bth_get_opcode(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) packet->pad = hfi1_16B_bth_get_pad(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) /* hdr_len_by_opcode already has an IB LRH factored in */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) packet->hlen = hdr_len_by_opcode[packet->opcode] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) (LRH_16B_BYTES - LRH_9B_BYTES) + grh_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) packet->migrated = opa_bth_is_migration(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) if (packet->grh->next_hdr != IB_GRH_NEXT_HDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) vtf = be32_to_cpu(packet->grh->version_tclass_flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) if ((vtf >> IB_GRH_VERSION_SHIFT) != IB_GRH_VERSION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) } else if (l4 == OPA_16B_L4_FM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) packet->mgmt = packet->ebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) packet->ohdr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) packet->grh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) packet->opcode = IB_OPCODE_UD_SEND_ONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) packet->pad = OPA_16B_L4_FM_PAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) packet->hlen = OPA_16B_L4_FM_HLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) packet->migrated = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) /* Query commonly used fields from packet header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) packet->payload = packet->ebuf + packet->hlen - LRH_16B_BYTES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) packet->slid = hfi1_16B_get_slid(packet->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) packet->dlid = hfi1_16B_get_dlid(packet->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) if (unlikely(hfi1_is_16B_mcast(packet->dlid)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) packet->dlid += opa_get_mcast_base(OPA_MCAST_NR) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) opa_get_lid(opa_get_mcast_base(OPA_MCAST_NR),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) 16B);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) packet->sc = hfi1_16B_get_sc(packet->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) packet->sl = ibp->sc_to_sl[packet->sc];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) packet->extra_byte = SIZE_OF_LT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) packet->pkey = hfi1_16B_get_pkey(packet->hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) if (hfi1_bypass_ingress_pkt_check(packet))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) drop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) hfi1_cdbg(PKT, "%s: packet dropped\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) ibp->rvp.n_pkt_drops++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) static void show_eflags_errs(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) struct hfi1_ctxtdata *rcd = packet->rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) u32 rte = rhf_rcv_type_err(packet->rhf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) dd_dev_err(rcd->dd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) "receive context %d: rhf 0x%016llx, errs [ %s%s%s%s%s%s%s] rte 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) rcd->ctxt, packet->rhf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) packet->rhf & RHF_K_HDR_LEN_ERR ? "k_hdr_len " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) packet->rhf & RHF_DC_UNC_ERR ? "dc_unc " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) packet->rhf & RHF_DC_ERR ? "dc " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) packet->rhf & RHF_TID_ERR ? "tid " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) packet->rhf & RHF_LEN_ERR ? "len " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) packet->rhf & RHF_ECC_ERR ? "ecc " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) packet->rhf & RHF_ICRC_ERR ? "icrc " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) rte);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) void handle_eflags(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) struct hfi1_ctxtdata *rcd = packet->rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) rcv_hdrerr(rcd, rcd->ppd, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) if (rhf_err_flags(packet->rhf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) show_eflags_errs(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) static void hfi1_ipoib_ib_rcv(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) struct hfi1_ibport *ibp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) struct net_device *netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) struct hfi1_ctxtdata *rcd = packet->rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) struct napi_struct *napi = rcd->napi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) struct hfi1_netdev_rxq *rxq = container_of(napi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) struct hfi1_netdev_rxq, napi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) u32 extra_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) u32 tlen, qpnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) bool do_work, do_cnp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) struct hfi1_ipoib_dev_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) trace_hfi1_rcvhdr(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) hfi1_setup_ib_header(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) packet->ohdr = &((struct ib_header *)packet->hdr)->u.oth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) packet->grh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) if (unlikely(rhf_err_flags(packet->rhf))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) handle_eflags(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) qpnum = ib_bth_get_qpn(packet->ohdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) netdev = hfi1_netdev_get_data(rcd->dd, qpnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) if (!netdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) goto drop_no_nd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) trace_input_ibhdr(rcd->dd, packet, !!(rhf_dc_info(packet->rhf)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) trace_ctxt_rsm_hist(rcd->ctxt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) /* handle congestion notifications */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) do_work = hfi1_may_ecn(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) if (unlikely(do_work)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) do_cnp = (packet->opcode != IB_OPCODE_CNP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) (void)hfi1_process_ecn_slowpath(hfi1_ipoib_priv(netdev)->qp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) packet, do_cnp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) * We have split point after last byte of DETH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) * lets strip padding and CRC and ICRC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) * tlen is whole packet len so we need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) * subtract header size as well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) tlen = packet->tlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) extra_bytes = ib_bth_get_pad(packet->ohdr) + (SIZE_OF_CRC << 2) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) packet->hlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) if (unlikely(tlen < extra_bytes))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) tlen -= extra_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) skb = hfi1_ipoib_prepare_skb(rxq, tlen, packet->ebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) if (unlikely(!skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) priv = hfi1_ipoib_priv(netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) hfi1_ipoib_update_rx_netstats(priv, 1, skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) skb->dev = netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) skb->pkt_type = PACKET_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) netif_receive_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) drop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) ++netdev->stats.rx_dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) drop_no_nd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) ibp = rcd_to_iport(packet->rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) ++ibp->rvp.n_pkt_drops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) * The following functions are called by the interrupt handler. They are type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) * specific handlers for each packet type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) static void process_receive_ib(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) if (hfi1_setup_9B_packet(packet))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) if (unlikely(hfi1_dbg_should_fault_rx(packet)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) trace_hfi1_rcvhdr(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) if (unlikely(rhf_err_flags(packet->rhf))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) handle_eflags(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) hfi1_ib_rcv(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) static void process_receive_bypass(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) struct hfi1_devdata *dd = packet->rcd->dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) if (hfi1_setup_bypass_packet(packet))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) trace_hfi1_rcvhdr(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) if (unlikely(rhf_err_flags(packet->rhf))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) handle_eflags(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) if (hfi1_16B_get_l2(packet->hdr) == 0x2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) hfi1_16B_rcv(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) dd_dev_err(dd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) "Bypass packets other than 16B are not supported in normal operation. Dropping\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) incr_cntr64(&dd->sw_rcv_bypass_packet_errors);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) if (!(dd->err_info_rcvport.status_and_code &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) OPA_EI_STATUS_SMASK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) u64 *flits = packet->ebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) if (flits && !(packet->rhf & RHF_LEN_ERR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) dd->err_info_rcvport.packet_flit1 = flits[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) dd->err_info_rcvport.packet_flit2 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) packet->tlen > sizeof(flits[0]) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) flits[1] : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) dd->err_info_rcvport.status_and_code |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) (OPA_EI_STATUS_SMASK | BAD_L2_ERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) static void process_receive_error(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) /* KHdrHCRCErr -- KDETH packet with a bad HCRC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) if (unlikely(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) hfi1_dbg_fault_suppress_err(&packet->rcd->dd->verbs_dev) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) (rhf_rcv_type_err(packet->rhf) == RHF_RCV_TYPE_ERROR ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) packet->rhf & RHF_DC_ERR)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) hfi1_setup_ib_header(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) handle_eflags(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) if (unlikely(rhf_err_flags(packet->rhf)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) dd_dev_err(packet->rcd->dd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) "Unhandled error packet received. Dropping.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) static void kdeth_process_expected(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) hfi1_setup_9B_packet(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) if (unlikely(hfi1_dbg_should_fault_rx(packet)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) if (unlikely(rhf_err_flags(packet->rhf))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) struct hfi1_ctxtdata *rcd = packet->rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) if (hfi1_handle_kdeth_eflags(rcd, rcd->ppd, packet))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) hfi1_kdeth_expected_rcv(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) static void kdeth_process_eager(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) hfi1_setup_9B_packet(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) if (unlikely(hfi1_dbg_should_fault_rx(packet)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) trace_hfi1_rcvhdr(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) if (unlikely(rhf_err_flags(packet->rhf))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) struct hfi1_ctxtdata *rcd = packet->rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) show_eflags_errs(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) if (hfi1_handle_kdeth_eflags(rcd, rcd->ppd, packet))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) hfi1_kdeth_eager_rcv(packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) static void process_receive_invalid(struct hfi1_packet *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) dd_dev_err(packet->rcd->dd, "Invalid packet type %d. Dropping\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) rhf_rcv_type(packet->rhf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) #define HFI1_RCVHDR_DUMP_MAX 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) void seqfile_dump_rcd(struct seq_file *s, struct hfi1_ctxtdata *rcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) struct hfi1_packet packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) struct ps_mdata mdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) 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",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) rcd->ctxt, get_hdrq_cnt(rcd), get_hdrqentsize(rcd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) get_dma_rtail_setting(rcd) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) "dma_rtail" : "nodma_rtail",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) read_kctxt_csr(rcd->dd, rcd->ctxt, RCV_CTXT_CTRL),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) read_kctxt_csr(rcd->dd, rcd->ctxt, RCV_CTXT_STATUS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_HEAD) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) RCV_HDR_HEAD_HEAD_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) read_uctxt_csr(rcd->dd, rcd->ctxt, RCV_HDR_TAIL),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) rcd->head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) init_packet(rcd, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) init_ps_mdata(&mdata, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) for (i = 0; i < HFI1_RCVHDR_DUMP_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) __le32 *rhf_addr = (__le32 *)rcd->rcvhdrq + mdata.ps_head +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) rcd->rhf_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) struct ib_header *hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) u64 rhf = rhf_to_cpu(rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) u32 etype = rhf_rcv_type(rhf), qpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) u8 opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) u32 psn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) u8 lnh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) if (ps_done(&mdata, rhf, rcd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) if (ps_skip(&mdata, rhf, rcd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) if (etype > RHF_RCV_TYPE_IB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) packet.hdr = hfi1_get_msgheader(rcd, rhf_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) hdr = packet.hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) lnh = be16_to_cpu(hdr->lrh[0]) & 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) if (lnh == HFI1_LRH_BTH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) packet.ohdr = &hdr->u.oth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) else if (lnh == HFI1_LRH_GRH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) packet.ohdr = &hdr->u.l.oth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) goto next; /* just in case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) opcode = (be32_to_cpu(packet.ohdr->bth[0]) >> 24);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) qpn = be32_to_cpu(packet.ohdr->bth[1]) & RVT_QPN_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) psn = mask_psn(be32_to_cpu(packet.ohdr->bth[2]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) seq_printf(s, "\tEnt %u: opcode 0x%x, qpn 0x%x, psn 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) mdata.ps_head, opcode, qpn, psn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) next:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) update_ps_mdata(&mdata, rcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) const rhf_rcv_function_ptr normal_rhf_rcv_functions[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) [RHF_RCV_TYPE_EXPECTED] = kdeth_process_expected,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) [RHF_RCV_TYPE_EAGER] = kdeth_process_eager,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) [RHF_RCV_TYPE_IB] = process_receive_ib,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) [RHF_RCV_TYPE_ERROR] = process_receive_error,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) [RHF_RCV_TYPE_BYPASS] = process_receive_bypass,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) [RHF_RCV_TYPE_INVALID5] = process_receive_invalid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) [RHF_RCV_TYPE_INVALID6] = process_receive_invalid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) [RHF_RCV_TYPE_INVALID7] = process_receive_invalid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) const rhf_rcv_function_ptr netdev_rhf_rcv_functions[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) [RHF_RCV_TYPE_EXPECTED] = process_receive_invalid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) [RHF_RCV_TYPE_EAGER] = process_receive_invalid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) [RHF_RCV_TYPE_IB] = hfi1_ipoib_ib_rcv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) [RHF_RCV_TYPE_ERROR] = process_receive_error,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) [RHF_RCV_TYPE_BYPASS] = hfi1_vnic_bypass_rcv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) [RHF_RCV_TYPE_INVALID5] = process_receive_invalid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) [RHF_RCV_TYPE_INVALID6] = process_receive_invalid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) [RHF_RCV_TYPE_INVALID7] = process_receive_invalid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) };
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags