Update Intel irdma driver to version 1.2.17-k Notable changes: - pf-reset handling improvements, including fixes in communication with if_ice(4) - avoid racing when handling various events - adding sw stats sysctls - hand over pe_criterr handling from ice(4) to irdma(4) - debug prints adjustments - fix crash after changes in irdma_add_mqh_ifa_cb Signed-off-by: Bartosz Sobczak <bartosz.sobczak@intel.com> Signed-off-by: Eric Joyner <erj@FreeBSD.org> Reviewed by: erj@ MFC after: 1 month Sponsored by: Intel Corporation Differential Revision: https://reviews.freebsd.org/D41425
4261 lines
114 KiB
C
4261 lines
114 KiB
C
/*-
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* SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
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*
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* Copyright (c) 2015 - 2023 Intel Corporation
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenFabrics.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "irdma_main.h"
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static void irdma_cm_post_event(struct irdma_cm_event *event);
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static void irdma_disconnect_worker(struct work_struct *work);
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/**
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* irdma_free_sqbuf - put back puda buffer if refcount is 0
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* @vsi: The VSI structure of the device
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* @bufp: puda buffer to free
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*/
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void
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irdma_free_sqbuf(struct irdma_sc_vsi *vsi, void *bufp)
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{
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struct irdma_puda_buf *buf = bufp;
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struct irdma_puda_rsrc *ilq = vsi->ilq;
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if (atomic_dec_and_test(&buf->refcount))
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irdma_puda_ret_bufpool(ilq, buf);
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}
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/**
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* irdma_record_ird_ord - Record IRD/ORD passed in
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* @cm_node: connection's node
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* @conn_ird: connection IRD
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* @conn_ord: connection ORD
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*/
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static void
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irdma_record_ird_ord(struct irdma_cm_node *cm_node, u32 conn_ird,
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u32 conn_ord)
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{
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if (conn_ird > cm_node->dev->hw_attrs.max_hw_ird)
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conn_ird = cm_node->dev->hw_attrs.max_hw_ird;
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if (conn_ord > cm_node->dev->hw_attrs.max_hw_ord)
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conn_ord = cm_node->dev->hw_attrs.max_hw_ord;
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else if (!conn_ord && cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO)
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conn_ord = 1;
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cm_node->ird_size = conn_ird;
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cm_node->ord_size = conn_ord;
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}
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/**
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* irdma_copy_ip_ntohl - copy IP address from network to host
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* @dst: IP address in host order
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* @src: IP address in network order (big endian)
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*/
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void
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irdma_copy_ip_ntohl(u32 *dst, __be32 *src)
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{
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*dst++ = ntohl(*src++);
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*dst++ = ntohl(*src++);
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*dst++ = ntohl(*src++);
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*dst = ntohl(*src);
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}
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/**
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* irdma_copy_ip_htonl - copy IP address from host to network order
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* @dst: IP address in network order (big endian)
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* @src: IP address in host order
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*/
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void
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irdma_copy_ip_htonl(__be32 *dst, u32 *src)
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{
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*dst++ = htonl(*src++);
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*dst++ = htonl(*src++);
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*dst++ = htonl(*src++);
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*dst = htonl(*src);
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}
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/**
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* irdma_get_addr_info
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* @cm_node: contains ip/tcp info
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* @cm_info: to get a copy of the cm_node ip/tcp info
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*/
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static void
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irdma_get_addr_info(struct irdma_cm_node *cm_node,
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struct irdma_cm_info *cm_info)
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{
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memset(cm_info, 0, sizeof(*cm_info));
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cm_info->ipv4 = cm_node->ipv4;
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cm_info->vlan_id = cm_node->vlan_id;
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memcpy(cm_info->loc_addr, cm_node->loc_addr, sizeof(cm_info->loc_addr));
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memcpy(cm_info->rem_addr, cm_node->rem_addr, sizeof(cm_info->rem_addr));
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cm_info->loc_port = cm_node->loc_port;
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cm_info->rem_port = cm_node->rem_port;
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}
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/**
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* irdma_fill_sockaddr4 - fill in addr info for IPv4 connection
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* @cm_node: connection's node
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* @event: upper layer's cm event
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*/
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static inline void
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irdma_fill_sockaddr4(struct irdma_cm_node *cm_node,
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struct iw_cm_event *event)
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{
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struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr;
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struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr;
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laddr->sin_family = AF_INET;
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raddr->sin_family = AF_INET;
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laddr->sin_port = htons(cm_node->loc_port);
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raddr->sin_port = htons(cm_node->rem_port);
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laddr->sin_addr.s_addr = htonl(cm_node->loc_addr[0]);
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raddr->sin_addr.s_addr = htonl(cm_node->rem_addr[0]);
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}
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/**
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* irdma_fill_sockaddr6 - fill in addr info for IPv6 connection
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* @cm_node: connection's node
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* @event: upper layer's cm event
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*/
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static inline void
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irdma_fill_sockaddr6(struct irdma_cm_node *cm_node,
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struct iw_cm_event *event)
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{
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struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr;
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struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)&event->remote_addr;
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laddr6->sin6_family = AF_INET6;
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raddr6->sin6_family = AF_INET6;
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laddr6->sin6_port = htons(cm_node->loc_port);
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raddr6->sin6_port = htons(cm_node->rem_port);
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irdma_copy_ip_htonl(laddr6->sin6_addr.__u6_addr.__u6_addr32,
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cm_node->loc_addr);
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irdma_copy_ip_htonl(raddr6->sin6_addr.__u6_addr.__u6_addr32,
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cm_node->rem_addr);
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}
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/**
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* irdma_get_cmevent_info - for cm event upcall
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* @cm_node: connection's node
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* @cm_id: upper layers cm struct for the event
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* @event: upper layer's cm event
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*/
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static inline void
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irdma_get_cmevent_info(struct irdma_cm_node *cm_node,
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struct iw_cm_id *cm_id,
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struct iw_cm_event *event)
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{
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memcpy(&event->local_addr, &cm_id->m_local_addr,
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sizeof(event->local_addr));
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memcpy(&event->remote_addr, &cm_id->m_remote_addr,
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sizeof(event->remote_addr));
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if (cm_node) {
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event->private_data = cm_node->pdata_buf;
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event->private_data_len = (u8)cm_node->pdata.size;
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event->ird = cm_node->ird_size;
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event->ord = cm_node->ord_size;
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}
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}
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/**
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* irdma_send_cm_event - upcall cm's event handler
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* @cm_node: connection's node
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* @cm_id: upper layer's cm info struct
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* @type: Event type to indicate
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* @status: status for the event type
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*/
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static int
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irdma_send_cm_event(struct irdma_cm_node *cm_node,
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struct iw_cm_id *cm_id,
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enum iw_cm_event_type type, int status)
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{
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struct iw_cm_event event = {0};
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event.event = type;
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event.status = status;
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irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
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"cm_node %p cm_id=%p state=%d accel=%d event_type=%d status=%d\n",
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cm_node, cm_id, cm_node->accelerated, cm_node->state, type,
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status);
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switch (type) {
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case IW_CM_EVENT_CONNECT_REQUEST:
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if (cm_node->ipv4)
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irdma_fill_sockaddr4(cm_node, &event);
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else
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irdma_fill_sockaddr6(cm_node, &event);
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event.provider_data = cm_node;
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event.private_data = cm_node->pdata_buf;
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event.private_data_len = (u8)cm_node->pdata.size;
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event.ird = cm_node->ird_size;
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break;
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case IW_CM_EVENT_CONNECT_REPLY:
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irdma_get_cmevent_info(cm_node, cm_id, &event);
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break;
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case IW_CM_EVENT_ESTABLISHED:
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event.ird = cm_node->ird_size;
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event.ord = cm_node->ord_size;
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break;
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case IW_CM_EVENT_DISCONNECT:
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case IW_CM_EVENT_CLOSE:
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/* Wait if we are in RTS but havent issued the iwcm event upcall */
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if (!cm_node->accelerated)
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wait_for_completion(&cm_node->establish_comp);
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break;
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default:
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return -EINVAL;
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}
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return cm_id->event_handler(cm_id, &event);
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}
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/**
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* irdma_timer_list_prep - add connection nodes to a list to perform timer tasks
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* @cm_core: cm's core
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* @timer_list: a timer list to which cm_node will be selected
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*/
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static void
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irdma_timer_list_prep(struct irdma_cm_core *cm_core,
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struct list_head *timer_list)
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{
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struct irdma_cm_node *cm_node;
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int bkt;
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HASH_FOR_EACH_RCU(cm_core->cm_hash_tbl, bkt, cm_node, list) {
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if ((cm_node->close_entry || cm_node->send_entry) &&
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atomic_inc_not_zero(&cm_node->refcnt))
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list_add(&cm_node->timer_entry, timer_list);
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}
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}
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/**
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* irdma_create_event - create cm event
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* @cm_node: connection's node
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* @type: Event type to generate
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*/
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static struct irdma_cm_event *
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irdma_create_event(struct irdma_cm_node *cm_node,
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enum irdma_cm_event_type type)
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{
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struct irdma_cm_event *event;
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if (!cm_node->cm_id)
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return NULL;
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event = kzalloc(sizeof(*event), GFP_ATOMIC);
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if (!event)
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return NULL;
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event->type = type;
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event->cm_node = cm_node;
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memcpy(event->cm_info.rem_addr, cm_node->rem_addr,
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sizeof(event->cm_info.rem_addr));
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memcpy(event->cm_info.loc_addr, cm_node->loc_addr,
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sizeof(event->cm_info.loc_addr));
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event->cm_info.rem_port = cm_node->rem_port;
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event->cm_info.loc_port = cm_node->loc_port;
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event->cm_info.cm_id = cm_node->cm_id;
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irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
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"node=%p event=%p type=%u dst=%x src=%x\n", cm_node, event,
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type, event->cm_info.loc_addr[0],
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event->cm_info.rem_addr[0]);
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irdma_cm_post_event(event);
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return event;
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}
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/**
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* irdma_free_retrans_entry - free send entry
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* @cm_node: connection's node
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*/
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static void
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irdma_free_retrans_entry(struct irdma_cm_node *cm_node)
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{
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struct irdma_device *iwdev = cm_node->iwdev;
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struct irdma_timer_entry *send_entry;
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send_entry = cm_node->send_entry;
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if (!send_entry)
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return;
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cm_node->send_entry = NULL;
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irdma_free_sqbuf(&iwdev->vsi, send_entry->sqbuf);
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kfree(send_entry);
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atomic_dec(&cm_node->refcnt);
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}
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/**
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* irdma_cleanup_retrans_entry - free send entry with lock
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* @cm_node: connection's node
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*/
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static void
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irdma_cleanup_retrans_entry(struct irdma_cm_node *cm_node)
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{
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unsigned long flags;
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spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
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irdma_free_retrans_entry(cm_node);
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spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
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}
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/**
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* irdma_form_ah_cm_frame - get a free packet and build frame with address handle
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* @cm_node: connection's node ionfo to use in frame
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* @options: pointer to options info
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* @hdr: pointer mpa header
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* @pdata: pointer to private data
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* @flags: indicates FIN or ACK
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*/
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static struct irdma_puda_buf *
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irdma_form_ah_cm_frame(struct irdma_cm_node *cm_node,
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struct irdma_kmem_info *options,
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struct irdma_kmem_info *hdr,
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struct irdma_mpa_priv_info *pdata,
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u8 flags)
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{
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struct irdma_puda_buf *sqbuf;
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struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
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u8 *buf;
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struct tcphdr *tcph;
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u16 pktsize;
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u32 opts_len = 0;
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u32 pd_len = 0;
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u32 hdr_len = 0;
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if (!cm_node->ah || !cm_node->ah->ah_info.ah_valid) {
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irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM, "AH invalid\n");
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return NULL;
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}
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sqbuf = irdma_puda_get_bufpool(vsi->ilq);
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if (!sqbuf) {
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irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM, "SQ buf NULL\n");
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return NULL;
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}
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sqbuf->ah_id = cm_node->ah->ah_info.ah_idx;
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buf = sqbuf->mem.va;
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if (options)
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opts_len = (u32)options->size;
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if (hdr)
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hdr_len = hdr->size;
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if (pdata)
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pd_len = pdata->size;
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pktsize = sizeof(*tcph) + opts_len + hdr_len + pd_len;
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memset(buf, 0, pktsize);
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sqbuf->totallen = pktsize;
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sqbuf->tcphlen = sizeof(*tcph) + opts_len;
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sqbuf->scratch = cm_node;
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tcph = (struct tcphdr *)buf;
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buf += sizeof(*tcph);
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tcph->th_sport = htons(cm_node->loc_port);
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tcph->th_dport = htons(cm_node->rem_port);
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tcph->th_seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
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if (flags & SET_ACK) {
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cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
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tcph->th_ack = htonl(cm_node->tcp_cntxt.loc_ack_num);
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tcph->th_flags |= TH_ACK;
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} else {
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tcph->th_ack = 0;
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}
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if (flags & SET_SYN) {
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cm_node->tcp_cntxt.loc_seq_num++;
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tcph->th_flags |= TH_SYN;
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} else {
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cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
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}
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if (flags & SET_FIN) {
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cm_node->tcp_cntxt.loc_seq_num++;
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tcph->th_flags |= TH_FIN;
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}
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if (flags & SET_RST)
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tcph->th_flags |= TH_RST;
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tcph->th_off = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
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sqbuf->tcphlen = tcph->th_off << 2;
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tcph->th_win = htons(cm_node->tcp_cntxt.rcv_wnd);
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tcph->th_urp = 0;
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if (opts_len) {
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memcpy(buf, options->addr, opts_len);
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buf += opts_len;
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}
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if (hdr_len) {
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memcpy(buf, hdr->addr, hdr_len);
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buf += hdr_len;
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}
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if (pdata && pdata->addr)
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memcpy(buf, pdata->addr, pdata->size);
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atomic_set(&sqbuf->refcount, 1);
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irdma_debug_buf(vsi->dev, IRDMA_DEBUG_ILQ, "TRANSMIT ILQ BUFFER",
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sqbuf->mem.va, sqbuf->totallen);
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return sqbuf;
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}
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/**
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* irdma_form_uda_cm_frame - get a free packet and build frame full tcpip packet
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* @cm_node: connection's node ionfo to use in frame
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* @options: pointer to options info
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* @hdr: pointer mpa header
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* @pdata: pointer to private data
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* @flags: indicates FIN or ACK
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*/
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static struct irdma_puda_buf *
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irdma_form_uda_cm_frame(struct irdma_cm_node *cm_node,
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struct irdma_kmem_info *options,
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struct irdma_kmem_info *hdr,
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struct irdma_mpa_priv_info *pdata,
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u8 flags)
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{
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struct irdma_puda_buf *sqbuf;
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struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
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u8 *buf;
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|
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struct tcphdr *tcph;
|
|
struct ip *iph;
|
|
struct ip6_hdr *ip6h;
|
|
struct ether_header *ethh;
|
|
u16 pktsize;
|
|
u16 eth_hlen = ETH_HLEN;
|
|
u32 opts_len = 0;
|
|
u32 pd_len = 0;
|
|
u32 hdr_len = 0;
|
|
|
|
u16 vtag;
|
|
|
|
sqbuf = irdma_puda_get_bufpool(vsi->ilq);
|
|
if (!sqbuf)
|
|
return NULL;
|
|
|
|
buf = sqbuf->mem.va;
|
|
|
|
if (options)
|
|
opts_len = (u32)options->size;
|
|
|
|
if (hdr)
|
|
hdr_len = hdr->size;
|
|
|
|
if (pdata)
|
|
pd_len = pdata->size;
|
|
|
|
if (cm_node->vlan_id < VLAN_N_VID)
|
|
eth_hlen += 4;
|
|
|
|
if (cm_node->ipv4)
|
|
pktsize = sizeof(*iph) + sizeof(*tcph);
|
|
else
|
|
pktsize = sizeof(*ip6h) + sizeof(*tcph);
|
|
pktsize += opts_len + hdr_len + pd_len;
|
|
|
|
memset(buf, 0, eth_hlen + pktsize);
|
|
|
|
sqbuf->totallen = pktsize + eth_hlen;
|
|
sqbuf->maclen = eth_hlen;
|
|
sqbuf->tcphlen = sizeof(*tcph) + opts_len;
|
|
sqbuf->scratch = cm_node;
|
|
|
|
ethh = (struct ether_header *)buf;
|
|
buf += eth_hlen;
|
|
|
|
if (cm_node->do_lpb)
|
|
sqbuf->do_lpb = true;
|
|
|
|
if (cm_node->ipv4) {
|
|
sqbuf->ipv4 = true;
|
|
|
|
iph = (struct ip *)buf;
|
|
buf += sizeof(*iph);
|
|
tcph = (struct tcphdr *)buf;
|
|
buf += sizeof(*tcph);
|
|
|
|
ether_addr_copy(ethh->ether_dhost, cm_node->rem_mac);
|
|
ether_addr_copy(ethh->ether_shost, cm_node->loc_mac);
|
|
if (cm_node->vlan_id < VLAN_N_VID) {
|
|
((struct ether_vlan_header *)ethh)->evl_proto =
|
|
htons(ETH_P_8021Q);
|
|
vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) |
|
|
cm_node->vlan_id;
|
|
((struct ether_vlan_header *)ethh)->evl_tag = htons(vtag);
|
|
|
|
((struct ether_vlan_header *)ethh)->evl_encap_proto =
|
|
htons(ETH_P_IP);
|
|
} else {
|
|
ethh->ether_type = htons(ETH_P_IP);
|
|
}
|
|
|
|
iph->ip_v = IPVERSION;
|
|
iph->ip_hl = 5; /* 5 * 4Byte words, IP headr len */
|
|
iph->ip_tos = cm_node->tos;
|
|
iph->ip_len = htons(pktsize);
|
|
iph->ip_id = htons(++cm_node->tcp_cntxt.loc_id);
|
|
|
|
iph->ip_off = htons(0x4000);
|
|
iph->ip_ttl = 0x40;
|
|
iph->ip_p = IPPROTO_TCP;
|
|
iph->ip_src.s_addr = htonl(cm_node->loc_addr[0]);
|
|
iph->ip_dst.s_addr = htonl(cm_node->rem_addr[0]);
|
|
} else {
|
|
sqbuf->ipv4 = false;
|
|
ip6h = (struct ip6_hdr *)buf;
|
|
buf += sizeof(*ip6h);
|
|
tcph = (struct tcphdr *)buf;
|
|
buf += sizeof(*tcph);
|
|
|
|
ether_addr_copy(ethh->ether_dhost, cm_node->rem_mac);
|
|
ether_addr_copy(ethh->ether_shost, cm_node->loc_mac);
|
|
if (cm_node->vlan_id < VLAN_N_VID) {
|
|
((struct ether_vlan_header *)ethh)->evl_proto =
|
|
htons(ETH_P_8021Q);
|
|
vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) |
|
|
cm_node->vlan_id;
|
|
((struct ether_vlan_header *)ethh)->evl_tag = htons(vtag);
|
|
((struct ether_vlan_header *)ethh)->evl_encap_proto =
|
|
htons(ETH_P_IPV6);
|
|
} else {
|
|
ethh->ether_type = htons(ETH_P_IPV6);
|
|
}
|
|
ip6h->ip6_vfc = 6 << 4;
|
|
ip6h->ip6_vfc |= cm_node->tos >> 4;
|
|
ip6h->ip6_flow = cm_node->tos << 20;
|
|
ip6h->ip6_plen = htons(pktsize - sizeof(*ip6h));
|
|
ip6h->ip6_nxt = 6;
|
|
ip6h->ip6_hops = 128;
|
|
irdma_copy_ip_htonl(ip6h->ip6_src.__u6_addr.__u6_addr32,
|
|
cm_node->loc_addr);
|
|
irdma_copy_ip_htonl(ip6h->ip6_dst.__u6_addr.__u6_addr32,
|
|
cm_node->rem_addr);
|
|
}
|
|
|
|
tcph->th_sport = htons(cm_node->loc_port);
|
|
tcph->th_dport = htons(cm_node->rem_port);
|
|
tcph->th_seq = htonl(cm_node->tcp_cntxt.loc_seq_num);
|
|
|
|
if (flags & SET_ACK) {
|
|
cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt;
|
|
tcph->th_ack = htonl(cm_node->tcp_cntxt.loc_ack_num);
|
|
tcph->th_flags |= TH_ACK;
|
|
} else {
|
|
tcph->th_ack = 0;
|
|
}
|
|
|
|
if (flags & SET_SYN) {
|
|
cm_node->tcp_cntxt.loc_seq_num++;
|
|
tcph->th_flags |= TH_SYN;
|
|
} else {
|
|
cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len;
|
|
}
|
|
|
|
if (flags & SET_FIN) {
|
|
cm_node->tcp_cntxt.loc_seq_num++;
|
|
tcph->th_flags |= TH_FIN;
|
|
}
|
|
|
|
if (flags & SET_RST)
|
|
tcph->th_flags |= TH_RST;
|
|
|
|
tcph->th_off = (u16)((sizeof(*tcph) + opts_len + 3) >> 2);
|
|
sqbuf->tcphlen = tcph->th_off << 2;
|
|
tcph->th_win = htons(cm_node->tcp_cntxt.rcv_wnd);
|
|
tcph->th_urp = 0;
|
|
|
|
if (opts_len) {
|
|
memcpy(buf, options->addr, opts_len);
|
|
buf += opts_len;
|
|
}
|
|
|
|
if (hdr_len) {
|
|
memcpy(buf, hdr->addr, hdr_len);
|
|
buf += hdr_len;
|
|
}
|
|
|
|
if (pdata && pdata->addr)
|
|
memcpy(buf, pdata->addr, pdata->size);
|
|
|
|
atomic_set(&sqbuf->refcount, 1);
|
|
|
|
irdma_debug_buf(vsi->dev, IRDMA_DEBUG_ILQ, "TRANSMIT ILQ BUFFER",
|
|
sqbuf->mem.va, sqbuf->totallen);
|
|
|
|
return sqbuf;
|
|
}
|
|
|
|
/**
|
|
* irdma_send_reset - Send RST packet
|
|
* @cm_node: connection's node
|
|
*/
|
|
int
|
|
irdma_send_reset(struct irdma_cm_node *cm_node)
|
|
{
|
|
struct irdma_puda_buf *sqbuf;
|
|
int flags = SET_RST | SET_ACK;
|
|
|
|
sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
|
|
flags);
|
|
if (!sqbuf)
|
|
return -ENOMEM;
|
|
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"caller: %pS cm_node %p cm_id=%p accel=%d state=%d rem_port=0x%04x, loc_port=0x%04x rem_addr=%x loc_addr=%x\n",
|
|
__builtin_return_address(0), cm_node, cm_node->cm_id,
|
|
cm_node->accelerated, cm_node->state, cm_node->rem_port,
|
|
cm_node->loc_port, cm_node->rem_addr[0],
|
|
cm_node->loc_addr[0]);
|
|
|
|
return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 0,
|
|
1);
|
|
}
|
|
|
|
/**
|
|
* irdma_active_open_err - send event for active side cm error
|
|
* @cm_node: connection's node
|
|
* @reset: Flag to send reset or not
|
|
*/
|
|
static void
|
|
irdma_active_open_err(struct irdma_cm_node *cm_node, bool reset)
|
|
{
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->cm_core->stats_connect_errs++;
|
|
if (reset) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"cm_node=%p state=%d\n", cm_node, cm_node->state);
|
|
atomic_inc(&cm_node->refcnt);
|
|
irdma_send_reset(cm_node);
|
|
}
|
|
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
|
|
}
|
|
|
|
/**
|
|
* irdma_passive_open_err - handle passive side cm error
|
|
* @cm_node: connection's node
|
|
* @reset: send reset or just free cm_node
|
|
*/
|
|
static void
|
|
irdma_passive_open_err(struct irdma_cm_node *cm_node, bool reset)
|
|
{
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->cm_core->stats_passive_errs++;
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"cm_node=%p state=%d\n", cm_node, cm_node->state);
|
|
if (reset)
|
|
irdma_send_reset(cm_node);
|
|
else
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
}
|
|
|
|
/**
|
|
* irdma_event_connect_error - to create connect error event
|
|
* @event: cm information for connect event
|
|
*/
|
|
static void
|
|
irdma_event_connect_error(struct irdma_cm_event *event)
|
|
{
|
|
struct irdma_qp *iwqp;
|
|
struct iw_cm_id *cm_id;
|
|
|
|
cm_id = event->cm_node->cm_id;
|
|
if (!cm_id)
|
|
return;
|
|
|
|
iwqp = cm_id->provider_data;
|
|
|
|
if (!iwqp || !iwqp->iwdev)
|
|
return;
|
|
|
|
iwqp->cm_id = NULL;
|
|
cm_id->provider_data = NULL;
|
|
irdma_send_cm_event(event->cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY,
|
|
-ECONNRESET);
|
|
irdma_rem_ref_cm_node(event->cm_node);
|
|
}
|
|
|
|
/**
|
|
* irdma_process_options - process options from TCP header
|
|
* @cm_node: connection's node
|
|
* @optionsloc: point to start of options
|
|
* @optionsize: size of all options
|
|
* @syn_pkt: flag if syn packet
|
|
*/
|
|
static int
|
|
irdma_process_options(struct irdma_cm_node *cm_node, u8 *optionsloc,
|
|
u32 optionsize, u32 syn_pkt)
|
|
{
|
|
u32 tmp;
|
|
u32 offset = 0;
|
|
union all_known_options *all_options;
|
|
char got_mss_option = 0;
|
|
|
|
while (offset < optionsize) {
|
|
all_options = (union all_known_options *)(optionsloc + offset);
|
|
switch (all_options->base.optionnum) {
|
|
case OPTION_NUM_EOL:
|
|
offset = optionsize;
|
|
break;
|
|
case OPTION_NUM_NONE:
|
|
offset += 1;
|
|
continue;
|
|
case OPTION_NUM_MSS:
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"MSS Length: %d Offset: %d Size: %d\n",
|
|
all_options->mss.len, offset, optionsize);
|
|
got_mss_option = 1;
|
|
if (all_options->mss.len != 4)
|
|
return -EINVAL;
|
|
tmp = ntohs(all_options->mss.mss);
|
|
if ((cm_node->ipv4 &&
|
|
(tmp + IRDMA_MTU_TO_MSS_IPV4) < IRDMA_MIN_MTU_IPV4) ||
|
|
(!cm_node->ipv4 &&
|
|
(tmp + IRDMA_MTU_TO_MSS_IPV6) < IRDMA_MIN_MTU_IPV6))
|
|
return -EINVAL;
|
|
if (tmp < cm_node->tcp_cntxt.mss)
|
|
cm_node->tcp_cntxt.mss = tmp;
|
|
break;
|
|
case OPTION_NUM_WINDOW_SCALE:
|
|
cm_node->tcp_cntxt.snd_wscale =
|
|
all_options->windowscale.shiftcount;
|
|
break;
|
|
default:
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"Unsupported TCP Option: %x\n",
|
|
all_options->base.optionnum);
|
|
break;
|
|
}
|
|
offset += all_options->base.len;
|
|
}
|
|
if (!got_mss_option && syn_pkt)
|
|
cm_node->tcp_cntxt.mss = IRDMA_CM_DEFAULT_MSS;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_handle_tcp_options - setup TCP context info after parsing TCP options
|
|
* @cm_node: connection's node
|
|
* @tcph: pointer tcp header
|
|
* @optionsize: size of options rcvd
|
|
* @passive: active or passive flag
|
|
*/
|
|
static int
|
|
irdma_handle_tcp_options(struct irdma_cm_node *cm_node,
|
|
struct tcphdr *tcph, int optionsize,
|
|
int passive)
|
|
{
|
|
u8 *optionsloc = (u8 *)&tcph[1];
|
|
int ret;
|
|
|
|
if (optionsize) {
|
|
ret = irdma_process_options(cm_node, optionsloc, optionsize,
|
|
(u32)tcph->th_flags & TH_SYN);
|
|
if (ret) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"Node %p, Sending Reset\n", cm_node);
|
|
if (passive)
|
|
irdma_passive_open_err(cm_node, true);
|
|
else
|
|
irdma_active_open_err(cm_node, true);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->th_win)
|
|
<< cm_node->tcp_cntxt.snd_wscale;
|
|
|
|
if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd)
|
|
cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_build_mpa_v1 - build a MPA V1 frame
|
|
* @cm_node: connection's node
|
|
* @start_addr: address where to build frame
|
|
* @mpa_key: to do read0 or write0
|
|
*/
|
|
static void
|
|
irdma_build_mpa_v1(struct irdma_cm_node *cm_node, void *start_addr,
|
|
u8 mpa_key)
|
|
{
|
|
struct ietf_mpa_v1 *mpa_frame = start_addr;
|
|
|
|
switch (mpa_key) {
|
|
case MPA_KEY_REQUEST:
|
|
memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE);
|
|
break;
|
|
case MPA_KEY_REPLY:
|
|
memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
mpa_frame->flags = IETF_MPA_FLAGS_CRC;
|
|
mpa_frame->rev = cm_node->mpa_frame_rev;
|
|
mpa_frame->priv_data_len = htons(cm_node->pdata.size);
|
|
}
|
|
|
|
/**
|
|
* irdma_build_mpa_v2 - build a MPA V2 frame
|
|
* @cm_node: connection's node
|
|
* @start_addr: buffer start address
|
|
* @mpa_key: to do read0 or write0
|
|
*/
|
|
static void
|
|
irdma_build_mpa_v2(struct irdma_cm_node *cm_node, void *start_addr,
|
|
u8 mpa_key)
|
|
{
|
|
struct ietf_mpa_v2 *mpa_frame = start_addr;
|
|
struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg;
|
|
u16 ctrl_ird, ctrl_ord;
|
|
|
|
/* initialize the upper 5 bytes of the frame */
|
|
irdma_build_mpa_v1(cm_node, start_addr, mpa_key);
|
|
mpa_frame->flags |= IETF_MPA_V2_FLAG;
|
|
if (cm_node->iwdev->iw_ooo) {
|
|
mpa_frame->flags |= IETF_MPA_FLAGS_MARKERS;
|
|
cm_node->rcv_mark_en = true;
|
|
}
|
|
mpa_frame->priv_data_len = cpu_to_be16(be16_to_cpu(mpa_frame->priv_data_len) +
|
|
IETF_RTR_MSG_SIZE);
|
|
|
|
/* initialize RTR msg */
|
|
if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) {
|
|
ctrl_ird = IETF_NO_IRD_ORD;
|
|
ctrl_ord = IETF_NO_IRD_ORD;
|
|
} else {
|
|
ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ?
|
|
IETF_NO_IRD_ORD :
|
|
cm_node->ird_size;
|
|
ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ?
|
|
IETF_NO_IRD_ORD :
|
|
cm_node->ord_size;
|
|
}
|
|
ctrl_ird |= IETF_PEER_TO_PEER;
|
|
|
|
switch (mpa_key) {
|
|
case MPA_KEY_REQUEST:
|
|
ctrl_ord |= IETF_RDMA0_WRITE;
|
|
ctrl_ord |= IETF_RDMA0_READ;
|
|
break;
|
|
case MPA_KEY_REPLY:
|
|
switch (cm_node->send_rdma0_op) {
|
|
case SEND_RDMA_WRITE_ZERO:
|
|
ctrl_ord |= IETF_RDMA0_WRITE;
|
|
break;
|
|
case SEND_RDMA_READ_ZERO:
|
|
ctrl_ord |= IETF_RDMA0_READ;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
rtr_msg->ctrl_ird = htons(ctrl_ird);
|
|
rtr_msg->ctrl_ord = htons(ctrl_ord);
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_build_mpa_frame - build mpa frame for mpa version 1 or version 2
|
|
* @cm_node: connection's node
|
|
* @mpa: mpa: data buffer
|
|
* @mpa_key: to do read0 or write0
|
|
*/
|
|
static int
|
|
irdma_cm_build_mpa_frame(struct irdma_cm_node *cm_node,
|
|
struct irdma_kmem_info *mpa, u8 mpa_key)
|
|
{
|
|
int hdr_len = 0;
|
|
|
|
switch (cm_node->mpa_frame_rev) {
|
|
case IETF_MPA_V1:
|
|
hdr_len = sizeof(struct ietf_mpa_v1);
|
|
irdma_build_mpa_v1(cm_node, mpa->addr, mpa_key);
|
|
break;
|
|
case IETF_MPA_V2:
|
|
hdr_len = sizeof(struct ietf_mpa_v2);
|
|
irdma_build_mpa_v2(cm_node, mpa->addr, mpa_key);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return hdr_len;
|
|
}
|
|
|
|
/**
|
|
* irdma_send_mpa_request - active node send mpa request to passive node
|
|
* @cm_node: connection's node
|
|
*/
|
|
static int
|
|
irdma_send_mpa_request(struct irdma_cm_node *cm_node)
|
|
{
|
|
struct irdma_puda_buf *sqbuf;
|
|
|
|
cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame;
|
|
cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node,
|
|
&cm_node->mpa_hdr,
|
|
MPA_KEY_REQUEST);
|
|
if (!cm_node->mpa_hdr.size) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"mpa size = %d\n", cm_node->mpa_hdr.size);
|
|
return -EINVAL;
|
|
}
|
|
|
|
sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL,
|
|
&cm_node->mpa_hdr,
|
|
&cm_node->pdata, SET_ACK);
|
|
if (!sqbuf)
|
|
return -ENOMEM;
|
|
|
|
return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
|
|
0);
|
|
}
|
|
|
|
/**
|
|
* irdma_send_mpa_reject -
|
|
* @cm_node: connection's node
|
|
* @pdata: reject data for connection
|
|
* @plen: length of reject data
|
|
*/
|
|
static int
|
|
irdma_send_mpa_reject(struct irdma_cm_node *cm_node,
|
|
const void *pdata, u8 plen)
|
|
{
|
|
struct irdma_puda_buf *sqbuf;
|
|
struct irdma_mpa_priv_info priv_info;
|
|
|
|
cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame;
|
|
cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node,
|
|
&cm_node->mpa_hdr,
|
|
MPA_KEY_REPLY);
|
|
|
|
cm_node->mpa_v2_frame.flags |= IETF_MPA_FLAGS_REJECT;
|
|
priv_info.addr = pdata;
|
|
priv_info.size = plen;
|
|
|
|
sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL,
|
|
&cm_node->mpa_hdr, &priv_info,
|
|
SET_ACK | SET_FIN);
|
|
if (!sqbuf)
|
|
return -ENOMEM;
|
|
|
|
cm_node->state = IRDMA_CM_STATE_FIN_WAIT1;
|
|
|
|
return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
|
|
0);
|
|
}
|
|
|
|
/**
|
|
* irdma_negotiate_mpa_v2_ird_ord - negotiate MPAv2 IRD/ORD
|
|
* @cm_node: connection's node
|
|
* @buf: Data pointer
|
|
*/
|
|
static int
|
|
irdma_negotiate_mpa_v2_ird_ord(struct irdma_cm_node *cm_node,
|
|
u8 *buf)
|
|
{
|
|
struct ietf_mpa_v2 *mpa_v2_frame;
|
|
struct ietf_rtr_msg *rtr_msg;
|
|
u16 ird_size;
|
|
u16 ord_size;
|
|
u16 ctrl_ord;
|
|
u16 ctrl_ird;
|
|
|
|
mpa_v2_frame = (struct ietf_mpa_v2 *)buf;
|
|
rtr_msg = &mpa_v2_frame->rtr_msg;
|
|
|
|
/* parse rtr message */
|
|
ctrl_ord = ntohs(rtr_msg->ctrl_ord);
|
|
ctrl_ird = ntohs(rtr_msg->ctrl_ird);
|
|
ird_size = ctrl_ird & IETF_NO_IRD_ORD;
|
|
ord_size = ctrl_ord & IETF_NO_IRD_ORD;
|
|
|
|
if (!(ctrl_ird & IETF_PEER_TO_PEER))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD) {
|
|
cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD;
|
|
goto negotiate_done;
|
|
}
|
|
|
|
if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) {
|
|
/* responder */
|
|
if (!ord_size && (ctrl_ord & IETF_RDMA0_READ))
|
|
cm_node->ird_size = 1;
|
|
if (cm_node->ord_size > ird_size)
|
|
cm_node->ord_size = ird_size;
|
|
} else {
|
|
/* initiator */
|
|
if (!ird_size && (ctrl_ord & IETF_RDMA0_READ))
|
|
/* Remote peer doesn't support RDMA0_READ */
|
|
return -EOPNOTSUPP;
|
|
|
|
if (cm_node->ord_size > ird_size)
|
|
cm_node->ord_size = ird_size;
|
|
|
|
if (cm_node->ird_size < ord_size)
|
|
/* no resources available */
|
|
return -EINVAL;
|
|
}
|
|
|
|
negotiate_done:
|
|
if (ctrl_ord & IETF_RDMA0_READ)
|
|
cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
|
|
else if (ctrl_ord & IETF_RDMA0_WRITE)
|
|
cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO;
|
|
else
|
|
/* Not supported RDMA0 operation */
|
|
return -EOPNOTSUPP;
|
|
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"MPAV2 Negotiated ORD: %d, IRD: %d\n", cm_node->ord_size,
|
|
cm_node->ird_size);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_parse_mpa - process an IETF MPA frame
|
|
* @cm_node: connection's node
|
|
* @buf: Data pointer
|
|
* @type: to return accept or reject
|
|
* @len: Len of mpa buffer
|
|
*/
|
|
static int
|
|
irdma_parse_mpa(struct irdma_cm_node *cm_node, u8 *buf, u32 *type,
|
|
u32 len)
|
|
{
|
|
struct ietf_mpa_v1 *mpa_frame;
|
|
int mpa_hdr_len, priv_data_len, ret;
|
|
|
|
*type = IRDMA_MPA_REQUEST_ACCEPT;
|
|
|
|
if (len < sizeof(struct ietf_mpa_v1)) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"ietf buffer small (%x)\n", len);
|
|
return -EINVAL;
|
|
}
|
|
|
|
mpa_frame = (struct ietf_mpa_v1 *)buf;
|
|
mpa_hdr_len = sizeof(struct ietf_mpa_v1);
|
|
priv_data_len = ntohs(mpa_frame->priv_data_len);
|
|
|
|
if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"private_data too big %d\n", priv_data_len);
|
|
return -EOVERFLOW;
|
|
}
|
|
|
|
if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"unsupported mpa rev = %d\n", mpa_frame->rev);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (mpa_frame->rev > cm_node->mpa_frame_rev) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"rev %d\n", mpa_frame->rev);
|
|
return -EINVAL;
|
|
}
|
|
|
|
cm_node->mpa_frame_rev = mpa_frame->rev;
|
|
if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) {
|
|
if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ,
|
|
IETF_MPA_KEY_SIZE)) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"Unexpected MPA Key received\n");
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP,
|
|
IETF_MPA_KEY_SIZE)) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"Unexpected MPA Key received\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
if (priv_data_len + mpa_hdr_len > len) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"ietf buffer len(%x + %x != %x)\n", priv_data_len,
|
|
mpa_hdr_len, len);
|
|
return -EOVERFLOW;
|
|
}
|
|
|
|
if (len > IRDMA_MAX_CM_BUF) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"ietf buffer large len = %d\n", len);
|
|
return -EOVERFLOW;
|
|
}
|
|
|
|
switch (mpa_frame->rev) {
|
|
case IETF_MPA_V2:
|
|
mpa_hdr_len += IETF_RTR_MSG_SIZE;
|
|
ret = irdma_negotiate_mpa_v2_ird_ord(cm_node, buf);
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
case IETF_MPA_V1:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
memcpy(cm_node->pdata_buf, buf + mpa_hdr_len, priv_data_len);
|
|
cm_node->pdata.size = priv_data_len;
|
|
|
|
if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT)
|
|
*type = IRDMA_MPA_REQUEST_REJECT;
|
|
|
|
if (mpa_frame->flags & IETF_MPA_FLAGS_MARKERS)
|
|
cm_node->snd_mark_en = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_schedule_cm_timer
|
|
* @cm_node: connection's node
|
|
* @sqbuf: buffer to send
|
|
* @type: if it is send or close
|
|
* @send_retrans: if rexmits to be done
|
|
* @close_when_complete: is cm_node to be removed
|
|
*
|
|
* note - cm_node needs to be protected before calling this. Encase in:
|
|
* irdma_rem_ref_cm_node(cm_core, cm_node);
|
|
* irdma_schedule_cm_timer(...)
|
|
* atomic_inc(&cm_node->refcnt);
|
|
*/
|
|
int
|
|
irdma_schedule_cm_timer(struct irdma_cm_node *cm_node,
|
|
struct irdma_puda_buf *sqbuf,
|
|
enum irdma_timer_type type, int send_retrans,
|
|
int close_when_complete)
|
|
{
|
|
struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
|
|
struct irdma_cm_core *cm_core = cm_node->cm_core;
|
|
struct irdma_timer_entry *new_send;
|
|
u32 was_timer_set;
|
|
unsigned long flags;
|
|
|
|
new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC);
|
|
if (!new_send) {
|
|
if (type != IRDMA_TIMER_TYPE_CLOSE)
|
|
irdma_free_sqbuf(vsi, sqbuf);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
new_send->retrycount = IRDMA_DEFAULT_RETRYS;
|
|
new_send->retranscount = IRDMA_DEFAULT_RETRANS;
|
|
new_send->sqbuf = sqbuf;
|
|
new_send->timetosend = jiffies;
|
|
new_send->type = type;
|
|
new_send->send_retrans = send_retrans;
|
|
new_send->close_when_complete = close_when_complete;
|
|
|
|
if (type == IRDMA_TIMER_TYPE_CLOSE) {
|
|
new_send->timetosend += (HZ / 10);
|
|
if (cm_node->close_entry) {
|
|
kfree(new_send);
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"already close entry\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
cm_node->close_entry = new_send;
|
|
} else { /* type == IRDMA_TIMER_TYPE_SEND */
|
|
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
|
|
cm_node->send_entry = new_send;
|
|
atomic_inc(&cm_node->refcnt);
|
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
|
|
new_send->timetosend = jiffies + IRDMA_RETRY_TIMEOUT;
|
|
|
|
atomic_inc(&sqbuf->refcount);
|
|
irdma_puda_send_buf(vsi->ilq, sqbuf);
|
|
if (!send_retrans) {
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
if (close_when_complete)
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
was_timer_set = timer_pending(&cm_core->tcp_timer);
|
|
|
|
if (!was_timer_set) {
|
|
cm_core->tcp_timer.expires = new_send->timetosend;
|
|
add_timer(&cm_core->tcp_timer);
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_retrans_expired - Could not rexmit the packet
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void
|
|
irdma_retrans_expired(struct irdma_cm_node *cm_node)
|
|
{
|
|
enum irdma_cm_node_state state = cm_node->state;
|
|
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
switch (state) {
|
|
case IRDMA_CM_STATE_SYN_RCVD:
|
|
case IRDMA_CM_STATE_CLOSING:
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_FIN_WAIT1:
|
|
case IRDMA_CM_STATE_LAST_ACK:
|
|
irdma_send_reset(cm_node);
|
|
break;
|
|
default:
|
|
atomic_inc(&cm_node->refcnt);
|
|
irdma_send_reset(cm_node);
|
|
irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_handle_close_entry - for handling retry/timeouts
|
|
* @cm_node: connection's node
|
|
* @rem_node: flag for remove cm_node
|
|
*/
|
|
static void
|
|
irdma_handle_close_entry(struct irdma_cm_node *cm_node,
|
|
u32 rem_node)
|
|
{
|
|
struct irdma_timer_entry *close_entry = cm_node->close_entry;
|
|
struct irdma_qp *iwqp;
|
|
unsigned long flags;
|
|
|
|
if (!close_entry)
|
|
return;
|
|
iwqp = (struct irdma_qp *)close_entry->sqbuf;
|
|
if (iwqp) {
|
|
spin_lock_irqsave(&iwqp->lock, flags);
|
|
if (iwqp->cm_id) {
|
|
iwqp->hw_tcp_state = IRDMA_TCP_STATE_CLOSED;
|
|
iwqp->hw_iwarp_state = IRDMA_QP_STATE_ERROR;
|
|
iwqp->last_aeq = IRDMA_AE_RESET_SENT;
|
|
iwqp->ibqp_state = IB_QPS_ERR;
|
|
spin_unlock_irqrestore(&iwqp->lock, flags);
|
|
irdma_cm_disconn(iwqp);
|
|
} else {
|
|
spin_unlock_irqrestore(&iwqp->lock, flags);
|
|
}
|
|
} else if (rem_node) {
|
|
/* TIME_WAIT state */
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
}
|
|
|
|
kfree(close_entry);
|
|
cm_node->close_entry = NULL;
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_timer_tick - system's timer expired callback
|
|
* @t: Pointer to timer_list
|
|
*/
|
|
static void
|
|
irdma_cm_timer_tick(struct timer_list *t)
|
|
{
|
|
unsigned long nexttimeout = jiffies + IRDMA_LONG_TIME;
|
|
struct irdma_cm_node *cm_node;
|
|
struct irdma_timer_entry *send_entry, *close_entry;
|
|
struct list_head *list_core_temp;
|
|
struct list_head *list_node;
|
|
struct irdma_cm_core *cm_core = from_timer(cm_core, t, tcp_timer);
|
|
struct irdma_sc_vsi *vsi;
|
|
u32 settimer = 0;
|
|
unsigned long timetosend;
|
|
unsigned long flags;
|
|
struct list_head timer_list;
|
|
|
|
INIT_LIST_HEAD(&timer_list);
|
|
|
|
rcu_read_lock();
|
|
irdma_timer_list_prep(cm_core, &timer_list);
|
|
rcu_read_unlock();
|
|
|
|
list_for_each_safe(list_node, list_core_temp, &timer_list) {
|
|
cm_node = container_of(list_node, struct irdma_cm_node,
|
|
timer_entry);
|
|
close_entry = cm_node->close_entry;
|
|
|
|
if (close_entry) {
|
|
if (time_after(close_entry->timetosend, jiffies)) {
|
|
if (nexttimeout > close_entry->timetosend ||
|
|
!settimer) {
|
|
nexttimeout = close_entry->timetosend;
|
|
settimer = 1;
|
|
}
|
|
} else {
|
|
irdma_handle_close_entry(cm_node, 1);
|
|
}
|
|
}
|
|
|
|
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
|
|
|
|
send_entry = cm_node->send_entry;
|
|
if (!send_entry)
|
|
goto done;
|
|
if (time_after(send_entry->timetosend, jiffies)) {
|
|
if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) {
|
|
if (nexttimeout > send_entry->timetosend ||
|
|
!settimer) {
|
|
nexttimeout = send_entry->timetosend;
|
|
settimer = 1;
|
|
}
|
|
} else {
|
|
irdma_free_retrans_entry(cm_node);
|
|
}
|
|
goto done;
|
|
}
|
|
|
|
if (cm_node->state == IRDMA_CM_STATE_OFFLOADED ||
|
|
cm_node->state == IRDMA_CM_STATE_CLOSED) {
|
|
irdma_free_retrans_entry(cm_node);
|
|
goto done;
|
|
}
|
|
|
|
if (!send_entry->retranscount || !send_entry->retrycount) {
|
|
irdma_free_retrans_entry(cm_node);
|
|
|
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock,
|
|
flags);
|
|
irdma_retrans_expired(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
|
|
goto done;
|
|
}
|
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
|
|
|
|
vsi = &cm_node->iwdev->vsi;
|
|
if (!cm_node->ack_rcvd) {
|
|
atomic_inc(&send_entry->sqbuf->refcount);
|
|
irdma_puda_send_buf(vsi->ilq, send_entry->sqbuf);
|
|
cm_node->cm_core->stats_pkt_retrans++;
|
|
}
|
|
|
|
spin_lock_irqsave(&cm_node->retrans_list_lock, flags);
|
|
if (send_entry->send_retrans) {
|
|
send_entry->retranscount--;
|
|
timetosend = (IRDMA_RETRY_TIMEOUT <<
|
|
(IRDMA_DEFAULT_RETRANS -
|
|
send_entry->retranscount));
|
|
|
|
send_entry->timetosend = jiffies +
|
|
min(timetosend, IRDMA_MAX_TIMEOUT);
|
|
if (nexttimeout > send_entry->timetosend || !settimer) {
|
|
nexttimeout = send_entry->timetosend;
|
|
settimer = 1;
|
|
}
|
|
} else {
|
|
int close_when_complete;
|
|
|
|
close_when_complete = send_entry->close_when_complete;
|
|
irdma_free_retrans_entry(cm_node);
|
|
if (close_when_complete)
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
}
|
|
done:
|
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags);
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
}
|
|
|
|
if (settimer) {
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
if (!timer_pending(&cm_core->tcp_timer)) {
|
|
cm_core->tcp_timer.expires = nexttimeout;
|
|
add_timer(&cm_core->tcp_timer);
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_send_syn - send SYN packet
|
|
* @cm_node: connection's node
|
|
* @sendack: flag to set ACK bit or not
|
|
*/
|
|
int
|
|
irdma_send_syn(struct irdma_cm_node *cm_node, u32 sendack)
|
|
{
|
|
struct irdma_puda_buf *sqbuf;
|
|
int flags = SET_SYN;
|
|
char optionsbuf[sizeof(struct option_mss) +
|
|
sizeof(struct option_windowscale) +
|
|
sizeof(struct option_base) + TCP_OPTIONS_PADDING];
|
|
struct irdma_kmem_info opts;
|
|
int optionssize = 0;
|
|
/* Sending MSS option */
|
|
union all_known_options *options;
|
|
|
|
opts.addr = optionsbuf;
|
|
if (!cm_node)
|
|
return -EINVAL;
|
|
|
|
options = (union all_known_options *)&optionsbuf[optionssize];
|
|
options->mss.optionnum = OPTION_NUM_MSS;
|
|
options->mss.len = sizeof(struct option_mss);
|
|
options->mss.mss = htons(cm_node->tcp_cntxt.mss);
|
|
optionssize += sizeof(struct option_mss);
|
|
|
|
options = (union all_known_options *)&optionsbuf[optionssize];
|
|
options->windowscale.optionnum = OPTION_NUM_WINDOW_SCALE;
|
|
options->windowscale.len = sizeof(struct option_windowscale);
|
|
options->windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale;
|
|
optionssize += sizeof(struct option_windowscale);
|
|
options = (union all_known_options *)&optionsbuf[optionssize];
|
|
options->eol = OPTION_NUM_EOL;
|
|
optionssize += 1;
|
|
|
|
if (sendack)
|
|
flags |= SET_ACK;
|
|
|
|
opts.size = optionssize;
|
|
|
|
sqbuf = cm_node->cm_core->form_cm_frame(cm_node, &opts, NULL, NULL,
|
|
flags);
|
|
if (!sqbuf)
|
|
return -ENOMEM;
|
|
|
|
return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
|
|
0);
|
|
}
|
|
|
|
/**
|
|
* irdma_send_ack - Send ACK packet
|
|
* @cm_node: connection's node
|
|
*/
|
|
void
|
|
irdma_send_ack(struct irdma_cm_node *cm_node)
|
|
{
|
|
struct irdma_puda_buf *sqbuf;
|
|
struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi;
|
|
|
|
sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
|
|
SET_ACK);
|
|
if (sqbuf)
|
|
irdma_puda_send_buf(vsi->ilq, sqbuf);
|
|
}
|
|
|
|
/**
|
|
* irdma_send_fin - Send FIN pkt
|
|
* @cm_node: connection's node
|
|
*/
|
|
static int
|
|
irdma_send_fin(struct irdma_cm_node *cm_node)
|
|
{
|
|
struct irdma_puda_buf *sqbuf;
|
|
|
|
sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL,
|
|
SET_ACK | SET_FIN);
|
|
if (!sqbuf)
|
|
return -ENOMEM;
|
|
|
|
return irdma_schedule_cm_timer(cm_node, sqbuf, IRDMA_TIMER_TYPE_SEND, 1,
|
|
0);
|
|
}
|
|
|
|
/**
|
|
* irdma_find_listener - find a cm node listening on this addr-port pair
|
|
* @cm_core: cm's core
|
|
* @dst_addr: listener ip addr
|
|
* @ipv4: flag indicating IPv4 when true
|
|
* @dst_port: listener tcp port num
|
|
* @vlan_id: virtual LAN ID
|
|
* @listener_state: state to match with listen node's
|
|
*/
|
|
static struct irdma_cm_listener *
|
|
irdma_find_listener(struct irdma_cm_core *cm_core, u32 *dst_addr, bool ipv4, u16 dst_port,
|
|
u16 vlan_id, enum irdma_cm_listener_state listener_state)
|
|
{
|
|
struct irdma_cm_listener *listen_node;
|
|
static const u32 ip_zero[4] = {0, 0, 0, 0};
|
|
u32 listen_addr[4];
|
|
u16 listen_port;
|
|
unsigned long flags;
|
|
|
|
/* walk list and find cm_node associated with this session ID */
|
|
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
|
|
list_for_each_entry(listen_node, &cm_core->listen_list, list) {
|
|
memcpy(listen_addr, listen_node->loc_addr, sizeof(listen_addr));
|
|
listen_port = listen_node->loc_port;
|
|
if (listen_node->ipv4 != ipv4 || listen_port != dst_port ||
|
|
!(listener_state & listen_node->listener_state))
|
|
continue;
|
|
/* compare node pair, return node handle if a match */
|
|
if (!memcmp(listen_addr, ip_zero, sizeof(listen_addr)) ||
|
|
(!memcmp(listen_addr, dst_addr, sizeof(listen_addr)) &&
|
|
vlan_id == listen_node->vlan_id)) {
|
|
atomic_inc(&listen_node->refcnt);
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock,
|
|
flags);
|
|
return listen_node;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* irdma_del_multiple_qhash - Remove qhash and child listens
|
|
* @iwdev: iWarp device
|
|
* @cm_info: CM info for parent listen node
|
|
* @cm_parent_listen_node: The parent listen node
|
|
*/
|
|
static int
|
|
irdma_del_multiple_qhash(struct irdma_device *iwdev,
|
|
struct irdma_cm_info *cm_info,
|
|
struct irdma_cm_listener *cm_parent_listen_node)
|
|
{
|
|
struct irdma_cm_listener *child_listen_node;
|
|
struct list_head *pos, *tpos;
|
|
unsigned long flags;
|
|
int ret = -EINVAL;
|
|
|
|
spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
|
|
list_for_each_safe(pos, tpos,
|
|
&cm_parent_listen_node->child_listen_list) {
|
|
child_listen_node = list_entry(pos, struct irdma_cm_listener,
|
|
child_listen_list);
|
|
if (child_listen_node->ipv4)
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"removing child listen for IP=%x, port=%d, vlan=%d\n",
|
|
child_listen_node->loc_addr[0],
|
|
child_listen_node->loc_port,
|
|
child_listen_node->vlan_id);
|
|
else
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"removing child listen for IP=%x:%x:%x:%x, port=%d, vlan=%d\n",
|
|
IRDMA_PRINT_IP6(child_listen_node->loc_addr),
|
|
child_listen_node->loc_port,
|
|
child_listen_node->vlan_id);
|
|
list_del(pos);
|
|
memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
|
|
sizeof(cm_info->loc_addr));
|
|
cm_info->vlan_id = child_listen_node->vlan_id;
|
|
if (child_listen_node->qhash_set) {
|
|
ret = irdma_manage_qhash(iwdev, cm_info,
|
|
IRDMA_QHASH_TYPE_TCP_SYN,
|
|
IRDMA_QHASH_MANAGE_TYPE_DELETE,
|
|
NULL, false);
|
|
child_listen_node->qhash_set = false;
|
|
} else {
|
|
ret = 0;
|
|
}
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"Child listen node freed = %p\n",
|
|
child_listen_node);
|
|
kfree(child_listen_node);
|
|
cm_parent_listen_node->cm_core->stats_listen_nodes_destroyed++;
|
|
}
|
|
spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static u8 irdma_iw_get_vlan_prio(u32 *loc_addr, u8 prio, bool ipv4)
|
|
{
|
|
return prio;
|
|
}
|
|
|
|
/**
|
|
* irdma_netdev_vlan_ipv6 - Gets the netdev and mac
|
|
* @addr: local IPv6 address
|
|
* @vlan_id: vlan id for the given IPv6 address
|
|
* @mac: mac address for the given IPv6 address
|
|
*
|
|
* Returns the net_device of the IPv6 address and also sets the
|
|
* vlan id and mac for that address.
|
|
*/
|
|
if_t
|
|
irdma_netdev_vlan_ipv6(u32 *addr, u16 *vlan_id, u8 *mac)
|
|
{
|
|
if_t ip_dev = NULL;
|
|
struct in6_addr laddr6;
|
|
struct ifaddr *ifa;
|
|
u16 scope_id = 0;
|
|
|
|
irdma_copy_ip_htonl(laddr6.__u6_addr.__u6_addr32, addr);
|
|
if (vlan_id)
|
|
*vlan_id = 0xFFFF; /* Match rdma_vlan_dev_vlan_id() */
|
|
if (mac)
|
|
eth_zero_addr(mac);
|
|
|
|
if (IN6_IS_SCOPE_LINKLOCAL(&laddr6) ||
|
|
IN6_IS_ADDR_MC_INTFACELOCAL(&laddr6))
|
|
scope_id = ntohs(laddr6.__u6_addr.__u6_addr16[1]);
|
|
|
|
ip_dev = ip6_ifp_find(&init_net, laddr6, scope_id);
|
|
if (ip_dev) {
|
|
if (vlan_id)
|
|
*vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
|
|
ifa = if_getifaddr(ip_dev);
|
|
if (ifa && ifa->ifa_addr && mac)
|
|
ether_addr_copy(mac, if_getlladdr(ip_dev));
|
|
}
|
|
|
|
return ip_dev;
|
|
}
|
|
|
|
/**
|
|
* irdma_get_vlan_ipv4 - Returns the vlan_id for IPv4 address
|
|
* @addr: local IPv4 address
|
|
*/
|
|
u16
|
|
irdma_get_vlan_ipv4(u32 *addr)
|
|
{
|
|
if_t netdev;
|
|
u16 vlan_id = 0xFFFF;
|
|
|
|
netdev = ip_ifp_find(&init_net, htonl(addr[0]));
|
|
if (netdev) {
|
|
vlan_id = rdma_vlan_dev_vlan_id(netdev);
|
|
dev_put(netdev);
|
|
}
|
|
|
|
return vlan_id;
|
|
}
|
|
|
|
static int
|
|
irdma_manage_qhash_wait(struct irdma_pci_f *rf, struct irdma_cm_info *cm_info)
|
|
{
|
|
struct irdma_cqp_request *cqp_request = cm_info->cqp_request;
|
|
int cnt = rf->sc_dev.hw_attrs.max_cqp_compl_wait_time_ms * CQP_TIMEOUT_THRESHOLD;
|
|
u32 ret_val;
|
|
|
|
if (!cqp_request)
|
|
return -ENOMEM;
|
|
do {
|
|
irdma_cqp_ce_handler(rf, &rf->ccq.sc_cq);
|
|
mdelay(1);
|
|
} while (!READ_ONCE(cqp_request->request_done) && --cnt);
|
|
|
|
ret_val = cqp_request->compl_info.op_ret_val;
|
|
irdma_put_cqp_request(&rf->cqp, cqp_request);
|
|
if (cnt) {
|
|
if (!ret_val)
|
|
return 0;
|
|
return -EINVAL;
|
|
}
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
/**
|
|
* irdma_add_mqh_ifa_cb - Adds multiple qhashes for IPv4/IPv6
|
|
* @arg: Calback argument structure from irdma_add_mqh
|
|
* @ifa: Current address to compute against
|
|
* @count: Current cumulative output of all callbacks in this iteration
|
|
*
|
|
* Adds a qhash and a child listen node for a single IPv4/IPv6 address
|
|
* on the adapter and adds the associated qhash filter
|
|
*/
|
|
static u_int
|
|
irdma_add_mqh_ifa_cb(void *arg, struct ifaddr *ifa, u_int count)
|
|
{
|
|
struct irdma_add_mqh_cbs *cbs = arg;
|
|
struct irdma_cm_listener *child_listen_node;
|
|
struct irdma_cm_info *cm_info = cbs->cm_info;
|
|
struct irdma_device *iwdev = cbs->iwdev;
|
|
struct irdma_cm_listener *cm_parent_listen_node = cbs->cm_listen_node;
|
|
if_t ip_dev = ifa->ifa_ifp;
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
if (count)
|
|
return 0;
|
|
|
|
child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_ATOMIC);
|
|
if (!child_listen_node) {
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"listener memory allocation\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
memcpy(child_listen_node, cm_parent_listen_node,
|
|
sizeof(*child_listen_node));
|
|
cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev);
|
|
child_listen_node->vlan_id = cm_info->vlan_id;
|
|
if (cm_info->ipv4) {
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"Allocating child CM Listener forIP=%x, vlan_id=%d, MAC=%x:%x:%x:%x:%x:%x\n",
|
|
((struct sockaddr_in *)&ifa->ifa_addr)->sin_addr.s_addr,
|
|
rdma_vlan_dev_vlan_id(ip_dev),
|
|
if_getlladdr(ip_dev)[0], if_getlladdr(ip_dev)[1],
|
|
if_getlladdr(ip_dev)[2], if_getlladdr(ip_dev)[3],
|
|
if_getlladdr(ip_dev)[4], if_getlladdr(ip_dev)[5]);
|
|
child_listen_node->loc_addr[0] =
|
|
ntohl(((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr);
|
|
} else {
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"IP=%x:%x:%x:%x, vlan_id=%d, MAC=%x:%x:%x:%x:%x:%x\n",
|
|
IRDMA_PRINT_IP6(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr),
|
|
rdma_vlan_dev_vlan_id(ip_dev),
|
|
if_getlladdr(ip_dev)[0], if_getlladdr(ip_dev)[1],
|
|
if_getlladdr(ip_dev)[2], if_getlladdr(ip_dev)[3],
|
|
if_getlladdr(ip_dev)[4], if_getlladdr(ip_dev)[5]);
|
|
irdma_copy_ip_ntohl(child_listen_node->loc_addr,
|
|
((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr.__u6_addr.__u6_addr32);
|
|
}
|
|
memcpy(cm_info->loc_addr, child_listen_node->loc_addr,
|
|
sizeof(cm_info->loc_addr));
|
|
if (!iwdev->vsi.dscp_mode)
|
|
cm_info->user_pri =
|
|
irdma_iw_get_vlan_prio(child_listen_node->loc_addr,
|
|
cm_info->user_pri,
|
|
cm_info->ipv4);
|
|
ret = irdma_manage_qhash(iwdev, cm_info,
|
|
IRDMA_QHASH_TYPE_TCP_SYN,
|
|
IRDMA_QHASH_MANAGE_TYPE_ADD,
|
|
NULL, false);
|
|
if (ret) {
|
|
kfree(child_listen_node);
|
|
return ret;
|
|
}
|
|
/* wait for qhash finish */
|
|
ret = irdma_manage_qhash_wait(iwdev->rf, cm_info);
|
|
if (ret) {
|
|
kfree(child_listen_node);
|
|
return ret;
|
|
}
|
|
|
|
child_listen_node->qhash_set = true;
|
|
spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags);
|
|
list_add(&child_listen_node->child_listen_list,
|
|
&cm_parent_listen_node->child_listen_list);
|
|
spin_unlock_irqrestore(&iwdev->cm_core.listen_list_lock, flags);
|
|
cm_parent_listen_node->cm_core->stats_listen_nodes_created++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_add_mqh - Adds multiple qhashes
|
|
* @iwdev: iWarp device
|
|
* @cm_info: CM info for parent listen node
|
|
* @cm_listen_node: The parent listen node
|
|
*/
|
|
static int
|
|
irdma_add_mqh(struct irdma_device *iwdev,
|
|
struct irdma_cm_info *cm_info,
|
|
struct irdma_cm_listener *cm_listen_node)
|
|
{
|
|
struct epoch_tracker et;
|
|
struct irdma_add_mqh_cbs cbs;
|
|
struct if_iter iter;
|
|
if_t ifp;
|
|
int err = -ENOENT;
|
|
|
|
cbs.iwdev = iwdev;
|
|
cbs.cm_info = cm_info;
|
|
cbs.cm_listen_node = cm_listen_node;
|
|
|
|
VNET_ITERATOR_DECL(vnet_iter);
|
|
|
|
VNET_LIST_RLOCK();
|
|
NET_EPOCH_ENTER(et);
|
|
VNET_FOREACH(vnet_iter) {
|
|
CURVNET_SET_QUIET(vnet_iter);
|
|
for (ifp = if_iter_start(&iter); ifp != NULL; ifp = if_iter_next(&iter)) {
|
|
if (!(if_getflags(ifp) & IFF_UP))
|
|
continue;
|
|
|
|
if (((rdma_vlan_dev_vlan_id(ifp) >= VLAN_N_VID) ||
|
|
(rdma_vlan_dev_real_dev(ifp) != iwdev->netdev)) &&
|
|
ifp != iwdev->netdev)
|
|
continue;
|
|
|
|
if_addr_rlock(ifp);
|
|
if (cm_info->ipv4)
|
|
err = if_foreach_addr_type(ifp, AF_INET, irdma_add_mqh_ifa_cb, &cbs);
|
|
else
|
|
err = if_foreach_addr_type(ifp, AF_INET6, irdma_add_mqh_ifa_cb, &cbs);
|
|
if_addr_runlock(ifp);
|
|
}
|
|
if_iter_finish(&iter);
|
|
CURVNET_RESTORE();
|
|
}
|
|
NET_EPOCH_EXIT(et);
|
|
VNET_LIST_RUNLOCK();
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* irdma_reset_list_prep - add connection nodes slated for reset to list
|
|
* @cm_core: cm's core
|
|
* @listener: pointer to listener node
|
|
* @reset_list: a list to which cm_node will be selected
|
|
*/
|
|
static void
|
|
irdma_reset_list_prep(struct irdma_cm_core *cm_core,
|
|
struct irdma_cm_listener *listener,
|
|
struct list_head *reset_list)
|
|
{
|
|
struct irdma_cm_node *cm_node;
|
|
int bkt;
|
|
|
|
HASH_FOR_EACH_RCU(cm_core->cm_hash_tbl, bkt, cm_node, list) {
|
|
if (cm_node->listener == listener &&
|
|
!cm_node->accelerated &&
|
|
atomic_inc_not_zero(&cm_node->refcnt))
|
|
list_add(&cm_node->reset_entry, reset_list);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_dec_refcnt_listen - delete listener and associated cm nodes
|
|
* @cm_core: cm's core
|
|
* @listener: pointer to listener node
|
|
* @free_hanging_nodes: to free associated cm_nodes
|
|
* @apbvt_del: flag to delete the apbvt
|
|
*/
|
|
static int
|
|
irdma_dec_refcnt_listen(struct irdma_cm_core *cm_core,
|
|
struct irdma_cm_listener *listener,
|
|
int free_hanging_nodes, bool apbvt_del)
|
|
{
|
|
struct list_head *list_pos;
|
|
struct list_head *list_temp;
|
|
struct irdma_cm_node *cm_node;
|
|
struct list_head reset_list;
|
|
struct irdma_cm_info nfo;
|
|
enum irdma_cm_node_state old_state;
|
|
unsigned long flags;
|
|
int err;
|
|
|
|
/* free non-accelerated child nodes for this listener */
|
|
INIT_LIST_HEAD(&reset_list);
|
|
if (free_hanging_nodes) {
|
|
rcu_read_lock();
|
|
irdma_reset_list_prep(cm_core, listener, &reset_list);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
list_for_each_safe(list_pos, list_temp, &reset_list) {
|
|
cm_node = container_of(list_pos, struct irdma_cm_node,
|
|
reset_entry);
|
|
if (cm_node->state >= IRDMA_CM_STATE_FIN_WAIT1) {
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
continue;
|
|
}
|
|
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
err = irdma_send_reset(cm_node);
|
|
if (err) {
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"send reset failed\n");
|
|
} else {
|
|
old_state = cm_node->state;
|
|
cm_node->state = IRDMA_CM_STATE_LISTENER_DESTROYED;
|
|
if (old_state != IRDMA_CM_STATE_MPAREQ_RCVD)
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
}
|
|
}
|
|
|
|
if (atomic_dec_and_test(&listener->refcnt)) {
|
|
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
|
|
list_del(&listener->list);
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
|
|
|
|
if (apbvt_del)
|
|
irdma_del_apbvt(listener->iwdev,
|
|
listener->apbvt_entry);
|
|
memcpy(nfo.loc_addr, listener->loc_addr, sizeof(nfo.loc_addr));
|
|
nfo.loc_port = listener->loc_port;
|
|
nfo.ipv4 = listener->ipv4;
|
|
nfo.vlan_id = listener->vlan_id;
|
|
nfo.user_pri = listener->user_pri;
|
|
nfo.qh_qpid = listener->iwdev->vsi.ilq->qp_id;
|
|
|
|
if (!list_empty(&listener->child_listen_list)) {
|
|
irdma_del_multiple_qhash(listener->iwdev, &nfo,
|
|
listener);
|
|
} else {
|
|
if (listener->qhash_set)
|
|
irdma_manage_qhash(listener->iwdev,
|
|
&nfo,
|
|
IRDMA_QHASH_TYPE_TCP_SYN,
|
|
IRDMA_QHASH_MANAGE_TYPE_DELETE,
|
|
NULL, false);
|
|
}
|
|
|
|
cm_core->stats_listen_destroyed++;
|
|
cm_core->stats_listen_nodes_destroyed++;
|
|
irdma_debug(&listener->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"loc_port=0x%04x loc_addr=%x cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d apbvt_del=%d\n",
|
|
listener->loc_port, listener->loc_addr[0], listener,
|
|
listener->cm_id, listener->qhash_set,
|
|
listener->vlan_id, apbvt_del);
|
|
kfree(listener);
|
|
listener = NULL;
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_del_listen - delete a listener
|
|
* @cm_core: cm's core
|
|
* @listener: passive connection's listener
|
|
* @apbvt_del: flag to delete apbvt
|
|
*/
|
|
static int
|
|
irdma_cm_del_listen(struct irdma_cm_core *cm_core,
|
|
struct irdma_cm_listener *listener,
|
|
bool apbvt_del)
|
|
{
|
|
listener->listener_state = IRDMA_CM_LISTENER_PASSIVE_STATE;
|
|
listener->cm_id = NULL;
|
|
|
|
return irdma_dec_refcnt_listen(cm_core, listener, 1, apbvt_del);
|
|
}
|
|
|
|
/**
|
|
* irdma_find_node - find a cm node that matches the reference cm node
|
|
* @cm_core: cm's core
|
|
* @rem_port: remote tcp port num
|
|
* @rem_addr: remote ip addr
|
|
* @loc_port: local tcp port num
|
|
* @loc_addr: local ip addr
|
|
* @vlan_id: local VLAN ID
|
|
*/
|
|
struct irdma_cm_node *
|
|
irdma_find_node(struct irdma_cm_core *cm_core,
|
|
u16 rem_port, u32 *rem_addr, u16 loc_port,
|
|
u32 *loc_addr, u16 vlan_id)
|
|
{
|
|
struct irdma_cm_node *cm_node;
|
|
u32 key = (rem_port << 16) | loc_port;
|
|
|
|
rcu_read_lock();
|
|
HASH_FOR_EACH_POSSIBLE_RCU(cm_core->cm_hash_tbl, cm_node, list, key) {
|
|
if (cm_node->vlan_id == vlan_id &&
|
|
cm_node->loc_port == loc_port && cm_node->rem_port == rem_port &&
|
|
!memcmp(cm_node->loc_addr, loc_addr, sizeof(cm_node->loc_addr)) &&
|
|
!memcmp(cm_node->rem_addr, rem_addr, sizeof(cm_node->rem_addr))) {
|
|
if (!atomic_inc_not_zero(&cm_node->refcnt))
|
|
goto exit;
|
|
rcu_read_unlock();
|
|
return cm_node;
|
|
}
|
|
}
|
|
|
|
exit:
|
|
rcu_read_unlock();
|
|
|
|
/* no owner node */
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* irdma_add_hte_node - add a cm node to the hash table
|
|
* @cm_core: cm's core
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void
|
|
irdma_add_hte_node(struct irdma_cm_core *cm_core,
|
|
struct irdma_cm_node *cm_node)
|
|
{
|
|
unsigned long flags;
|
|
u32 key = (cm_node->rem_port << 16) | cm_node->loc_port;
|
|
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
HASH_ADD_RCU(cm_core->cm_hash_tbl, &cm_node->list, key);
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
}
|
|
|
|
/**
|
|
* irdma_ipv4_is_lpb - check if loopback
|
|
* @loc_addr: local addr to compare
|
|
* @rem_addr: remote address
|
|
*/
|
|
bool
|
|
irdma_ipv4_is_lpb(u32 loc_addr, u32 rem_addr)
|
|
{
|
|
return ipv4_is_loopback(htonl(rem_addr)) || (loc_addr == rem_addr);
|
|
}
|
|
|
|
/**
|
|
* irdma_ipv6_is_lpb - check if loopback
|
|
* @loc_addr: local addr to compare
|
|
* @rem_addr: remote address
|
|
*/
|
|
bool
|
|
irdma_ipv6_is_lpb(u32 *loc_addr, u32 *rem_addr)
|
|
{
|
|
struct in6_addr raddr6;
|
|
|
|
irdma_copy_ip_htonl(raddr6.__u6_addr.__u6_addr32, rem_addr);
|
|
|
|
return !memcmp(loc_addr, rem_addr, 16) || ipv6_addr_loopback(&raddr6);
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_create_ah - create a cm address handle
|
|
* @cm_node: The connection manager node to create AH for
|
|
* @wait: Provides option to wait for ah creation or not
|
|
*/
|
|
static int
|
|
irdma_cm_create_ah(struct irdma_cm_node *cm_node, bool wait)
|
|
{
|
|
struct irdma_ah_info ah_info = {0};
|
|
struct irdma_device *iwdev = cm_node->iwdev;
|
|
#ifdef VIMAGE
|
|
struct rdma_cm_id *rdma_id = (struct rdma_cm_id *)cm_node->cm_id->context;
|
|
struct vnet *vnet = rdma_id->route.addr.dev_addr.net;
|
|
#endif
|
|
|
|
ether_addr_copy(ah_info.mac_addr, if_getlladdr(iwdev->netdev));
|
|
|
|
ah_info.hop_ttl = 0x40;
|
|
ah_info.tc_tos = cm_node->tos;
|
|
ah_info.vsi = &iwdev->vsi;
|
|
|
|
if (cm_node->ipv4) {
|
|
ah_info.ipv4_valid = true;
|
|
ah_info.dest_ip_addr[0] = cm_node->rem_addr[0];
|
|
ah_info.src_ip_addr[0] = cm_node->loc_addr[0];
|
|
CURVNET_SET_QUIET(vnet);
|
|
ah_info.do_lpbk = irdma_ipv4_is_lpb(ah_info.src_ip_addr[0],
|
|
ah_info.dest_ip_addr[0]);
|
|
CURVNET_RESTORE();
|
|
} else {
|
|
memcpy(ah_info.dest_ip_addr, cm_node->rem_addr,
|
|
sizeof(ah_info.dest_ip_addr));
|
|
memcpy(ah_info.src_ip_addr, cm_node->loc_addr,
|
|
sizeof(ah_info.src_ip_addr));
|
|
ah_info.do_lpbk = irdma_ipv6_is_lpb(ah_info.src_ip_addr,
|
|
ah_info.dest_ip_addr);
|
|
}
|
|
|
|
ah_info.vlan_tag = cm_node->vlan_id;
|
|
if (cm_node->vlan_id < VLAN_N_VID) {
|
|
ah_info.insert_vlan_tag = 1;
|
|
ah_info.vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT;
|
|
}
|
|
|
|
ah_info.dst_arpindex =
|
|
irdma_arp_table(iwdev->rf, ah_info.dest_ip_addr,
|
|
NULL, IRDMA_ARP_RESOLVE);
|
|
|
|
if (irdma_puda_create_ah(&iwdev->rf->sc_dev, &ah_info, wait,
|
|
IRDMA_PUDA_RSRC_TYPE_ILQ, cm_node,
|
|
&cm_node->ah))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_free_ah - free a cm address handle
|
|
* @cm_node: The connection manager node to create AH for
|
|
*/
|
|
static void
|
|
irdma_cm_free_ah(struct irdma_cm_node *cm_node)
|
|
{
|
|
struct irdma_device *iwdev = cm_node->iwdev;
|
|
|
|
irdma_puda_free_ah(&iwdev->rf->sc_dev, cm_node->ah);
|
|
cm_node->ah = NULL;
|
|
}
|
|
|
|
/**
|
|
* irdma_make_cm_node - create a new instance of a cm node
|
|
* @cm_core: cm's core
|
|
* @iwdev: iwarp device structure
|
|
* @cm_info: quad info for connection
|
|
* @listener: passive connection's listener
|
|
*/
|
|
static struct irdma_cm_node *
|
|
irdma_make_cm_node(struct irdma_cm_core *cm_core, struct irdma_device *iwdev,
|
|
struct irdma_cm_info *cm_info,
|
|
struct irdma_cm_listener *listener)
|
|
{
|
|
struct irdma_cm_node *cm_node;
|
|
int arpindex;
|
|
if_t netdev = iwdev->netdev;
|
|
|
|
/* create an hte and cm_node for this instance */
|
|
cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC);
|
|
if (!cm_node)
|
|
return NULL;
|
|
|
|
/* set our node specific transport info */
|
|
cm_node->ipv4 = cm_info->ipv4;
|
|
cm_node->vlan_id = cm_info->vlan_id;
|
|
if (cm_node->vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
|
|
cm_node->vlan_id = 0;
|
|
cm_node->tos = cm_info->tos;
|
|
cm_node->user_pri = cm_info->user_pri;
|
|
if (listener) {
|
|
if (listener->tos != cm_info->tos)
|
|
irdma_dev_warn(&iwdev->ibdev,
|
|
"application TOS[%d] and remote client TOS[%d] mismatch\n",
|
|
listener->tos, cm_info->tos);
|
|
if (iwdev->vsi.dscp_mode) {
|
|
cm_node->user_pri = listener->user_pri;
|
|
} else {
|
|
cm_node->tos = max(listener->tos, cm_info->tos);
|
|
cm_node->user_pri = rt_tos2priority(cm_node->tos);
|
|
cm_node->user_pri =
|
|
irdma_iw_get_vlan_prio(cm_info->loc_addr,
|
|
cm_node->user_pri,
|
|
cm_info->ipv4);
|
|
}
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_DCB,
|
|
"listener: TOS:[%d] UP:[%d]\n", cm_node->tos,
|
|
cm_node->user_pri);
|
|
}
|
|
memcpy(cm_node->loc_addr, cm_info->loc_addr, sizeof(cm_node->loc_addr));
|
|
memcpy(cm_node->rem_addr, cm_info->rem_addr, sizeof(cm_node->rem_addr));
|
|
cm_node->loc_port = cm_info->loc_port;
|
|
cm_node->rem_port = cm_info->rem_port;
|
|
|
|
cm_node->mpa_frame_rev = IRDMA_CM_DEFAULT_MPA_VER;
|
|
cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO;
|
|
cm_node->iwdev = iwdev;
|
|
cm_node->dev = &iwdev->rf->sc_dev;
|
|
|
|
cm_node->ird_size = cm_node->dev->hw_attrs.max_hw_ird;
|
|
cm_node->ord_size = cm_node->dev->hw_attrs.max_hw_ord;
|
|
|
|
cm_node->listener = listener;
|
|
cm_node->cm_id = cm_info->cm_id;
|
|
ether_addr_copy(cm_node->loc_mac, if_getlladdr(netdev));
|
|
spin_lock_init(&cm_node->retrans_list_lock);
|
|
cm_node->ack_rcvd = false;
|
|
|
|
init_completion(&cm_node->establish_comp);
|
|
atomic_set(&cm_node->refcnt, 1);
|
|
/* associate our parent CM core */
|
|
cm_node->cm_core = cm_core;
|
|
cm_node->tcp_cntxt.loc_id = IRDMA_CM_DEFAULT_LOCAL_ID;
|
|
cm_node->tcp_cntxt.rcv_wscale = iwdev->rcv_wscale;
|
|
cm_node->tcp_cntxt.rcv_wnd = iwdev->rcv_wnd >> cm_node->tcp_cntxt.rcv_wscale;
|
|
kc_set_loc_seq_num_mss(cm_node);
|
|
|
|
arpindex = irdma_resolve_neigh_lpb_chk(iwdev, cm_node, cm_info);
|
|
if (arpindex < 0)
|
|
goto err;
|
|
|
|
ether_addr_copy(cm_node->rem_mac, iwdev->rf->arp_table[arpindex].mac_addr);
|
|
irdma_add_hte_node(cm_core, cm_node);
|
|
cm_core->stats_nodes_created++;
|
|
return cm_node;
|
|
|
|
err:
|
|
kfree(cm_node);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
irdma_destroy_connection(struct irdma_cm_node *cm_node)
|
|
{
|
|
struct irdma_cm_core *cm_core = cm_node->cm_core;
|
|
struct irdma_qp *iwqp;
|
|
struct irdma_cm_info nfo;
|
|
|
|
/* if the node is destroyed before connection was accelerated */
|
|
if (!cm_node->accelerated && cm_node->accept_pend) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"node destroyed before established\n");
|
|
atomic_dec(&cm_node->listener->pend_accepts_cnt);
|
|
}
|
|
if (cm_node->close_entry)
|
|
irdma_handle_close_entry(cm_node, 0);
|
|
if (cm_node->listener) {
|
|
irdma_dec_refcnt_listen(cm_core, cm_node->listener, 0, true);
|
|
} else {
|
|
if (cm_node->apbvt_set) {
|
|
irdma_del_apbvt(cm_node->iwdev, cm_node->apbvt_entry);
|
|
cm_node->apbvt_set = 0;
|
|
}
|
|
irdma_get_addr_info(cm_node, &nfo);
|
|
if (cm_node->qhash_set) {
|
|
nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
|
|
irdma_manage_qhash(cm_node->iwdev, &nfo,
|
|
IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
|
|
IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL,
|
|
false);
|
|
cm_node->qhash_set = 0;
|
|
}
|
|
}
|
|
|
|
iwqp = cm_node->iwqp;
|
|
if (iwqp) {
|
|
cm_node->cm_id->rem_ref(cm_node->cm_id);
|
|
cm_node->cm_id = NULL;
|
|
iwqp->cm_id = NULL;
|
|
irdma_qp_rem_ref(&iwqp->ibqp);
|
|
cm_node->iwqp = NULL;
|
|
} else if (cm_node->qhash_set) {
|
|
irdma_get_addr_info(cm_node, &nfo);
|
|
nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
|
|
irdma_manage_qhash(cm_node->iwdev, &nfo,
|
|
IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
|
|
IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL, false);
|
|
cm_node->qhash_set = 0;
|
|
}
|
|
|
|
cm_core->cm_free_ah(cm_node);
|
|
}
|
|
|
|
/**
|
|
* irdma_rem_ref_cm_node - destroy an instance of a cm node
|
|
* @cm_node: connection's node
|
|
*/
|
|
void
|
|
irdma_rem_ref_cm_node(struct irdma_cm_node *cm_node)
|
|
{
|
|
struct irdma_cm_core *cm_core = cm_node->cm_core;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags);
|
|
|
|
if (!atomic_dec_and_test(&cm_node->refcnt)) {
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
return;
|
|
}
|
|
if (cm_node->iwqp) {
|
|
cm_node->iwqp->cm_node = NULL;
|
|
cm_node->iwqp->cm_id = NULL;
|
|
}
|
|
HASH_DEL_RCU(cm_core->cm_hash_tbl, &cm_node->list);
|
|
cm_node->cm_core->stats_nodes_destroyed++;
|
|
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags);
|
|
|
|
irdma_destroy_connection(cm_node);
|
|
|
|
kfree_rcu(cm_node, rcu_head);
|
|
}
|
|
|
|
/**
|
|
* irdma_handle_fin_pkt - FIN packet received
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void
|
|
irdma_handle_fin_pkt(struct irdma_cm_node *cm_node)
|
|
{
|
|
switch (cm_node->state) {
|
|
case IRDMA_CM_STATE_SYN_RCVD:
|
|
case IRDMA_CM_STATE_SYN_SENT:
|
|
case IRDMA_CM_STATE_ESTABLISHED:
|
|
case IRDMA_CM_STATE_MPAREJ_RCVD:
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_LAST_ACK;
|
|
irdma_send_fin(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_MPAREQ_SENT:
|
|
irdma_create_event(cm_node, IRDMA_CM_EVENT_ABORTED);
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
atomic_inc(&cm_node->refcnt);
|
|
irdma_send_reset(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_FIN_WAIT1:
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_CLOSING;
|
|
irdma_send_ack(cm_node);
|
|
/*
|
|
* Wait for ACK as this is simultaneous close. After we receive ACK, do not send anything. Just rm the
|
|
* node.
|
|
*/
|
|
break;
|
|
case IRDMA_CM_STATE_FIN_WAIT2:
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_TIME_WAIT;
|
|
irdma_send_ack(cm_node);
|
|
irdma_schedule_cm_timer(cm_node, NULL, IRDMA_TIMER_TYPE_CLOSE,
|
|
1, 0);
|
|
break;
|
|
case IRDMA_CM_STATE_TIME_WAIT:
|
|
cm_node->tcp_cntxt.rcv_nxt++;
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_OFFLOADED:
|
|
default:
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"bad state node state = %d\n", cm_node->state);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_handle_rst_pkt - process received RST packet
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void
|
|
irdma_handle_rst_pkt(struct irdma_cm_node *cm_node,
|
|
struct irdma_puda_buf *rbuf)
|
|
{
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"caller: %pS cm_node=%p state=%d rem_port=0x%04x loc_port=0x%04x rem_addr=%x loc_addr=%x\n",
|
|
__builtin_return_address(0), cm_node, cm_node->state,
|
|
cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr[0],
|
|
cm_node->loc_addr[0]);
|
|
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
switch (cm_node->state) {
|
|
case IRDMA_CM_STATE_SYN_SENT:
|
|
case IRDMA_CM_STATE_MPAREQ_SENT:
|
|
switch (cm_node->mpa_frame_rev) {
|
|
case IETF_MPA_V2:
|
|
/* Drop down to MPA_V1 */
|
|
cm_node->mpa_frame_rev = IETF_MPA_V1;
|
|
/* send a syn and goto syn sent state */
|
|
cm_node->state = IRDMA_CM_STATE_SYN_SENT;
|
|
if (irdma_send_syn(cm_node, 0))
|
|
irdma_active_open_err(cm_node, false);
|
|
break;
|
|
case IETF_MPA_V1:
|
|
default:
|
|
irdma_active_open_err(cm_node, false);
|
|
break;
|
|
}
|
|
break;
|
|
case IRDMA_CM_STATE_MPAREQ_RCVD:
|
|
atomic_inc(&cm_node->passive_state);
|
|
break;
|
|
case IRDMA_CM_STATE_ESTABLISHED:
|
|
case IRDMA_CM_STATE_SYN_RCVD:
|
|
case IRDMA_CM_STATE_LISTENING:
|
|
irdma_passive_open_err(cm_node, false);
|
|
break;
|
|
case IRDMA_CM_STATE_OFFLOADED:
|
|
irdma_active_open_err(cm_node, false);
|
|
break;
|
|
case IRDMA_CM_STATE_CLOSED:
|
|
break;
|
|
case IRDMA_CM_STATE_FIN_WAIT2:
|
|
case IRDMA_CM_STATE_FIN_WAIT1:
|
|
case IRDMA_CM_STATE_LAST_ACK:
|
|
case IRDMA_CM_STATE_TIME_WAIT:
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_handle_rcv_mpa - Process a recv'd mpa buffer
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void
|
|
irdma_handle_rcv_mpa(struct irdma_cm_node *cm_node,
|
|
struct irdma_puda_buf *rbuf)
|
|
{
|
|
int err;
|
|
int datasize = rbuf->datalen;
|
|
u8 *dataloc = rbuf->data;
|
|
|
|
enum irdma_cm_event_type type = IRDMA_CM_EVENT_UNKNOWN;
|
|
u32 res_type;
|
|
|
|
err = irdma_parse_mpa(cm_node, dataloc, &res_type, datasize);
|
|
if (err) {
|
|
if (cm_node->state == IRDMA_CM_STATE_MPAREQ_SENT)
|
|
irdma_active_open_err(cm_node, true);
|
|
else
|
|
irdma_passive_open_err(cm_node, true);
|
|
return;
|
|
}
|
|
|
|
switch (cm_node->state) {
|
|
case IRDMA_CM_STATE_ESTABLISHED:
|
|
if (res_type == IRDMA_MPA_REQUEST_REJECT)
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"state for reject\n");
|
|
cm_node->state = IRDMA_CM_STATE_MPAREQ_RCVD;
|
|
type = IRDMA_CM_EVENT_MPA_REQ;
|
|
irdma_send_ack(cm_node); /* ACK received MPA request */
|
|
atomic_set(&cm_node->passive_state,
|
|
IRDMA_PASSIVE_STATE_INDICATED);
|
|
break;
|
|
case IRDMA_CM_STATE_MPAREQ_SENT:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
if (res_type == IRDMA_MPA_REQUEST_REJECT) {
|
|
type = IRDMA_CM_EVENT_MPA_REJECT;
|
|
cm_node->state = IRDMA_CM_STATE_MPAREJ_RCVD;
|
|
} else {
|
|
type = IRDMA_CM_EVENT_CONNECTED;
|
|
cm_node->state = IRDMA_CM_STATE_OFFLOADED;
|
|
}
|
|
irdma_send_ack(cm_node);
|
|
break;
|
|
default:
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"wrong cm_node state=%d\n", cm_node->state);
|
|
break;
|
|
}
|
|
irdma_create_event(cm_node, type);
|
|
}
|
|
|
|
/**
|
|
* irdma_check_syn - Check for error on received syn ack
|
|
* @cm_node: connection's node
|
|
* @tcph: pointer tcp header
|
|
*/
|
|
static int
|
|
irdma_check_syn(struct irdma_cm_node *cm_node, struct tcphdr *tcph)
|
|
{
|
|
if (ntohl(tcph->th_ack) != cm_node->tcp_cntxt.loc_seq_num) {
|
|
irdma_active_open_err(cm_node, true);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_check_seq - check seq numbers if OK
|
|
* @cm_node: connection's node
|
|
* @tcph: pointer tcp header
|
|
*/
|
|
static int
|
|
irdma_check_seq(struct irdma_cm_node *cm_node, struct tcphdr *tcph)
|
|
{
|
|
u32 seq;
|
|
u32 ack_seq;
|
|
u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num;
|
|
u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
|
|
u32 rcv_wnd;
|
|
int err = 0;
|
|
|
|
seq = ntohl(tcph->th_seq);
|
|
ack_seq = ntohl(tcph->th_ack);
|
|
rcv_wnd = cm_node->tcp_cntxt.rcv_wnd;
|
|
if (ack_seq != loc_seq_num ||
|
|
!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd)))
|
|
err = -1;
|
|
if (err)
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"seq number err\n");
|
|
|
|
return err;
|
|
}
|
|
|
|
void
|
|
irdma_add_conn_est_qh(struct irdma_cm_node *cm_node)
|
|
{
|
|
struct irdma_cm_info nfo;
|
|
|
|
irdma_get_addr_info(cm_node, &nfo);
|
|
nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id;
|
|
irdma_manage_qhash(cm_node->iwdev, &nfo,
|
|
IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
|
|
IRDMA_QHASH_MANAGE_TYPE_ADD,
|
|
cm_node, false);
|
|
cm_node->qhash_set = true;
|
|
}
|
|
|
|
/**
|
|
* irdma_handle_syn_pkt - is for Passive node
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void
|
|
irdma_handle_syn_pkt(struct irdma_cm_node *cm_node,
|
|
struct irdma_puda_buf *rbuf)
|
|
{
|
|
struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
|
|
int err;
|
|
u32 inc_sequence;
|
|
int optionsize;
|
|
|
|
optionsize = (tcph->th_off << 2) - sizeof(struct tcphdr);
|
|
inc_sequence = ntohl(tcph->th_seq);
|
|
|
|
switch (cm_node->state) {
|
|
case IRDMA_CM_STATE_SYN_SENT:
|
|
case IRDMA_CM_STATE_MPAREQ_SENT:
|
|
/* Rcvd syn on active open connection */
|
|
irdma_active_open_err(cm_node, 1);
|
|
break;
|
|
case IRDMA_CM_STATE_LISTENING:
|
|
/* Passive OPEN */
|
|
if (atomic_read(&cm_node->listener->pend_accepts_cnt) >
|
|
cm_node->listener->backlog) {
|
|
cm_node->cm_core->stats_backlog_drops++;
|
|
irdma_passive_open_err(cm_node, false);
|
|
break;
|
|
}
|
|
err = irdma_handle_tcp_options(cm_node, tcph, optionsize, 1);
|
|
if (err) {
|
|
irdma_passive_open_err(cm_node, false);
|
|
/* drop pkt */
|
|
break;
|
|
}
|
|
err = cm_node->cm_core->cm_create_ah(cm_node, false);
|
|
if (err) {
|
|
irdma_passive_open_err(cm_node, false);
|
|
/* drop pkt */
|
|
break;
|
|
}
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
|
|
cm_node->accept_pend = 1;
|
|
atomic_inc(&cm_node->listener->pend_accepts_cnt);
|
|
|
|
cm_node->state = IRDMA_CM_STATE_SYN_RCVD;
|
|
break;
|
|
case IRDMA_CM_STATE_CLOSED:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
atomic_inc(&cm_node->refcnt);
|
|
irdma_send_reset(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_OFFLOADED:
|
|
case IRDMA_CM_STATE_ESTABLISHED:
|
|
case IRDMA_CM_STATE_FIN_WAIT1:
|
|
case IRDMA_CM_STATE_FIN_WAIT2:
|
|
case IRDMA_CM_STATE_MPAREQ_RCVD:
|
|
case IRDMA_CM_STATE_LAST_ACK:
|
|
case IRDMA_CM_STATE_CLOSING:
|
|
case IRDMA_CM_STATE_UNKNOWN:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_handle_synack_pkt - Process SYN+ACK packet (active side)
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void
|
|
irdma_handle_synack_pkt(struct irdma_cm_node *cm_node,
|
|
struct irdma_puda_buf *rbuf)
|
|
{
|
|
struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
|
|
int err;
|
|
u32 inc_sequence;
|
|
int optionsize;
|
|
|
|
optionsize = (tcph->th_off << 2) - sizeof(struct tcphdr);
|
|
inc_sequence = ntohl(tcph->th_seq);
|
|
switch (cm_node->state) {
|
|
case IRDMA_CM_STATE_SYN_SENT:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
/* active open */
|
|
if (irdma_check_syn(cm_node, tcph)) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"check syn fail\n");
|
|
return;
|
|
}
|
|
cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->th_ack);
|
|
/* setup options */
|
|
err = irdma_handle_tcp_options(cm_node, tcph, optionsize, 0);
|
|
if (err) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"cm_node=%p tcp_options failed\n", cm_node);
|
|
break;
|
|
}
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1;
|
|
irdma_send_ack(cm_node); /* ACK for the syn_ack */
|
|
err = irdma_send_mpa_request(cm_node);
|
|
if (err) {
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"cm_node=%p irdma_send_mpa_request failed\n",
|
|
cm_node);
|
|
break;
|
|
}
|
|
cm_node->state = IRDMA_CM_STATE_MPAREQ_SENT;
|
|
break;
|
|
case IRDMA_CM_STATE_MPAREQ_RCVD:
|
|
irdma_passive_open_err(cm_node, true);
|
|
break;
|
|
case IRDMA_CM_STATE_LISTENING:
|
|
cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->th_ack);
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
irdma_send_reset(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_CLOSED:
|
|
cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->th_ack);
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
atomic_inc(&cm_node->refcnt);
|
|
irdma_send_reset(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_ESTABLISHED:
|
|
case IRDMA_CM_STATE_FIN_WAIT1:
|
|
case IRDMA_CM_STATE_FIN_WAIT2:
|
|
case IRDMA_CM_STATE_LAST_ACK:
|
|
case IRDMA_CM_STATE_OFFLOADED:
|
|
case IRDMA_CM_STATE_CLOSING:
|
|
case IRDMA_CM_STATE_UNKNOWN:
|
|
case IRDMA_CM_STATE_MPAREQ_SENT:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_handle_ack_pkt - process packet with ACK
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static int
|
|
irdma_handle_ack_pkt(struct irdma_cm_node *cm_node,
|
|
struct irdma_puda_buf *rbuf)
|
|
{
|
|
struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
|
|
u32 inc_sequence;
|
|
int ret;
|
|
int optionsize;
|
|
u32 datasize = rbuf->datalen;
|
|
|
|
optionsize = (tcph->th_off << 2) - sizeof(struct tcphdr);
|
|
|
|
if (irdma_check_seq(cm_node, tcph))
|
|
return -EINVAL;
|
|
|
|
inc_sequence = ntohl(tcph->th_seq);
|
|
switch (cm_node->state) {
|
|
case IRDMA_CM_STATE_SYN_RCVD:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
ret = irdma_handle_tcp_options(cm_node, tcph, optionsize, 1);
|
|
if (ret)
|
|
return ret;
|
|
cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->th_ack);
|
|
cm_node->state = IRDMA_CM_STATE_ESTABLISHED;
|
|
if (datasize) {
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
|
|
irdma_handle_rcv_mpa(cm_node, rbuf);
|
|
}
|
|
break;
|
|
case IRDMA_CM_STATE_ESTABLISHED:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
if (datasize) {
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
|
|
irdma_handle_rcv_mpa(cm_node, rbuf);
|
|
}
|
|
break;
|
|
case IRDMA_CM_STATE_MPAREQ_SENT:
|
|
cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->th_ack);
|
|
if (datasize) {
|
|
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
|
|
cm_node->ack_rcvd = false;
|
|
irdma_handle_rcv_mpa(cm_node, rbuf);
|
|
} else {
|
|
cm_node->ack_rcvd = true;
|
|
}
|
|
break;
|
|
case IRDMA_CM_STATE_LISTENING:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
irdma_send_reset(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_CLOSED:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
atomic_inc(&cm_node->refcnt);
|
|
irdma_send_reset(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_LAST_ACK:
|
|
case IRDMA_CM_STATE_CLOSING:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_FIN_WAIT1:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
cm_node->state = IRDMA_CM_STATE_FIN_WAIT2;
|
|
break;
|
|
case IRDMA_CM_STATE_SYN_SENT:
|
|
case IRDMA_CM_STATE_FIN_WAIT2:
|
|
case IRDMA_CM_STATE_OFFLOADED:
|
|
case IRDMA_CM_STATE_MPAREQ_RCVD:
|
|
case IRDMA_CM_STATE_UNKNOWN:
|
|
default:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_process_pkt - process cm packet
|
|
* @cm_node: connection's node
|
|
* @rbuf: receive buffer
|
|
*/
|
|
static void
|
|
irdma_process_pkt(struct irdma_cm_node *cm_node,
|
|
struct irdma_puda_buf *rbuf)
|
|
{
|
|
enum irdma_tcpip_pkt_type pkt_type = IRDMA_PKT_TYPE_UNKNOWN;
|
|
struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph;
|
|
u32 fin_set = 0;
|
|
int err;
|
|
|
|
if (tcph->th_flags & TH_RST) {
|
|
pkt_type = IRDMA_PKT_TYPE_RST;
|
|
} else if (tcph->th_flags & TH_SYN) {
|
|
pkt_type = IRDMA_PKT_TYPE_SYN;
|
|
if (tcph->th_flags & TH_ACK)
|
|
pkt_type = IRDMA_PKT_TYPE_SYNACK;
|
|
} else if (tcph->th_flags & TH_ACK) {
|
|
pkt_type = IRDMA_PKT_TYPE_ACK;
|
|
}
|
|
if (tcph->th_flags & TH_FIN)
|
|
fin_set = 1;
|
|
|
|
switch (pkt_type) {
|
|
case IRDMA_PKT_TYPE_SYN:
|
|
irdma_handle_syn_pkt(cm_node, rbuf);
|
|
break;
|
|
case IRDMA_PKT_TYPE_SYNACK:
|
|
irdma_handle_synack_pkt(cm_node, rbuf);
|
|
break;
|
|
case IRDMA_PKT_TYPE_ACK:
|
|
err = irdma_handle_ack_pkt(cm_node, rbuf);
|
|
if (fin_set && !err)
|
|
irdma_handle_fin_pkt(cm_node);
|
|
break;
|
|
case IRDMA_PKT_TYPE_RST:
|
|
irdma_handle_rst_pkt(cm_node, rbuf);
|
|
break;
|
|
default:
|
|
if (fin_set &&
|
|
(!irdma_check_seq(cm_node, (struct tcphdr *)rbuf->tcph)))
|
|
irdma_handle_fin_pkt(cm_node);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_make_listen_node - create a listen node with params
|
|
* @cm_core: cm's core
|
|
* @iwdev: iwarp device structure
|
|
* @cm_info: quad info for connection
|
|
*/
|
|
static struct irdma_cm_listener *
|
|
irdma_make_listen_node(struct irdma_cm_core *cm_core,
|
|
struct irdma_device *iwdev,
|
|
struct irdma_cm_info *cm_info)
|
|
{
|
|
struct irdma_cm_listener *listener;
|
|
unsigned long flags;
|
|
|
|
/* cannot have multiple matching listeners */
|
|
listener = irdma_find_listener(cm_core, cm_info->loc_addr, cm_info->ipv4,
|
|
cm_info->loc_port, cm_info->vlan_id,
|
|
IRDMA_CM_LISTENER_EITHER_STATE);
|
|
if (listener &&
|
|
listener->listener_state == IRDMA_CM_LISTENER_ACTIVE_STATE) {
|
|
atomic_dec(&listener->refcnt);
|
|
return NULL;
|
|
}
|
|
|
|
if (!listener) {
|
|
/*
|
|
* create a CM listen node 1/2 node to compare incoming traffic to
|
|
*/
|
|
listener = kzalloc(sizeof(*listener), GFP_KERNEL);
|
|
if (!listener)
|
|
return NULL;
|
|
cm_core->stats_listen_nodes_created++;
|
|
memcpy(listener->loc_addr, cm_info->loc_addr,
|
|
sizeof(listener->loc_addr));
|
|
listener->loc_port = cm_info->loc_port;
|
|
|
|
INIT_LIST_HEAD(&listener->child_listen_list);
|
|
|
|
atomic_set(&listener->refcnt, 1);
|
|
} else {
|
|
listener->reused_node = 1;
|
|
}
|
|
|
|
listener->cm_id = cm_info->cm_id;
|
|
listener->ipv4 = cm_info->ipv4;
|
|
listener->vlan_id = cm_info->vlan_id;
|
|
atomic_set(&listener->pend_accepts_cnt, 0);
|
|
listener->cm_core = cm_core;
|
|
listener->iwdev = iwdev;
|
|
|
|
listener->backlog = cm_info->backlog;
|
|
listener->listener_state = IRDMA_CM_LISTENER_ACTIVE_STATE;
|
|
|
|
if (!listener->reused_node) {
|
|
spin_lock_irqsave(&cm_core->listen_list_lock, flags);
|
|
list_add(&listener->list, &cm_core->listen_list);
|
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
|
|
}
|
|
|
|
return listener;
|
|
}
|
|
|
|
/**
|
|
* irdma_create_cm_node - make a connection node with params
|
|
* @cm_core: cm's core
|
|
* @iwdev: iwarp device structure
|
|
* @conn_param: connection parameters
|
|
* @cm_info: quad info for connection
|
|
* @caller_cm_node: pointer to cm_node structure to return
|
|
*/
|
|
static int
|
|
irdma_create_cm_node(struct irdma_cm_core *cm_core,
|
|
struct irdma_device *iwdev,
|
|
struct iw_cm_conn_param *conn_param,
|
|
struct irdma_cm_info *cm_info,
|
|
struct irdma_cm_node **caller_cm_node)
|
|
{
|
|
struct irdma_cm_node *cm_node;
|
|
u16 private_data_len = conn_param->private_data_len;
|
|
const void *private_data = conn_param->private_data;
|
|
|
|
/* create a CM connection node */
|
|
cm_node = irdma_make_cm_node(cm_core, iwdev, cm_info, NULL);
|
|
if (!cm_node)
|
|
return -ENOMEM;
|
|
|
|
/* set our node side to client (active) side */
|
|
cm_node->tcp_cntxt.client = 1;
|
|
cm_node->tcp_cntxt.rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
|
|
|
|
irdma_record_ird_ord(cm_node, conn_param->ird, conn_param->ord);
|
|
|
|
cm_node->pdata.size = private_data_len;
|
|
cm_node->pdata.addr = cm_node->pdata_buf;
|
|
|
|
memcpy(cm_node->pdata_buf, private_data, private_data_len);
|
|
*caller_cm_node = cm_node;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_reject - reject and teardown a connection
|
|
* @cm_node: connection's node
|
|
* @pdata: ptr to private data for reject
|
|
* @plen: size of private data
|
|
*/
|
|
static int
|
|
irdma_cm_reject(struct irdma_cm_node *cm_node, const void *pdata,
|
|
u8 plen)
|
|
{
|
|
int ret;
|
|
int passive_state;
|
|
|
|
if (cm_node->tcp_cntxt.client)
|
|
return 0;
|
|
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
|
|
passive_state = atomic_add_return(1, &cm_node->passive_state);
|
|
if (passive_state == IRDMA_SEND_RESET_EVENT) {
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
return 0;
|
|
}
|
|
|
|
if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) {
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
return 0;
|
|
}
|
|
|
|
ret = irdma_send_mpa_reject(cm_node, pdata, plen);
|
|
if (!ret)
|
|
return 0;
|
|
|
|
cm_node->state = IRDMA_CM_STATE_CLOSED;
|
|
if (irdma_send_reset(cm_node))
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"send reset failed\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_close - close of cm connection
|
|
* @cm_node: connection's node
|
|
*/
|
|
static int
|
|
irdma_cm_close(struct irdma_cm_node *cm_node)
|
|
{
|
|
switch (cm_node->state) {
|
|
case IRDMA_CM_STATE_SYN_RCVD:
|
|
case IRDMA_CM_STATE_SYN_SENT:
|
|
case IRDMA_CM_STATE_ONE_SIDE_ESTABLISHED:
|
|
case IRDMA_CM_STATE_ESTABLISHED:
|
|
case IRDMA_CM_STATE_ACCEPTING:
|
|
case IRDMA_CM_STATE_MPAREQ_SENT:
|
|
case IRDMA_CM_STATE_MPAREQ_RCVD:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
irdma_send_reset(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_CLOSE_WAIT:
|
|
cm_node->state = IRDMA_CM_STATE_LAST_ACK;
|
|
irdma_send_fin(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_FIN_WAIT1:
|
|
case IRDMA_CM_STATE_FIN_WAIT2:
|
|
case IRDMA_CM_STATE_LAST_ACK:
|
|
case IRDMA_CM_STATE_TIME_WAIT:
|
|
case IRDMA_CM_STATE_CLOSING:
|
|
return -EINVAL;
|
|
case IRDMA_CM_STATE_LISTENING:
|
|
irdma_cleanup_retrans_entry(cm_node);
|
|
irdma_send_reset(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_MPAREJ_RCVD:
|
|
case IRDMA_CM_STATE_UNKNOWN:
|
|
case IRDMA_CM_STATE_INITED:
|
|
case IRDMA_CM_STATE_CLOSED:
|
|
case IRDMA_CM_STATE_LISTENER_DESTROYED:
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
break;
|
|
case IRDMA_CM_STATE_OFFLOADED:
|
|
if (cm_node->send_entry)
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"CM send_entry in OFFLOADED state\n");
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_receive_ilq - recv an ETHERNET packet, and process it
|
|
* through CM
|
|
* @vsi: VSI structure of dev
|
|
* @rbuf: receive buffer
|
|
*/
|
|
void
|
|
irdma_receive_ilq(struct irdma_sc_vsi *vsi, struct irdma_puda_buf *rbuf)
|
|
{
|
|
struct irdma_cm_node *cm_node;
|
|
struct irdma_cm_listener *listener;
|
|
struct ip *iph;
|
|
struct ip6_hdr *ip6h;
|
|
struct tcphdr *tcph;
|
|
struct irdma_cm_info cm_info = {0};
|
|
struct irdma_device *iwdev = vsi->back_vsi;
|
|
struct irdma_cm_core *cm_core = &iwdev->cm_core;
|
|
struct ether_vlan_header *ethh;
|
|
u16 vtag;
|
|
|
|
/* if vlan, then maclen = 18 else 14 */
|
|
iph = (struct ip *)rbuf->iph;
|
|
irdma_debug_buf(vsi->dev, IRDMA_DEBUG_ILQ, "RECEIVE ILQ BUFFER",
|
|
rbuf->mem.va, rbuf->totallen);
|
|
if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
|
|
if (rbuf->vlan_valid) {
|
|
vtag = rbuf->vlan_id;
|
|
cm_info.user_pri = (vtag & EVL_PRI_MASK) >>
|
|
VLAN_PRIO_SHIFT;
|
|
cm_info.vlan_id = vtag & EVL_VLID_MASK;
|
|
} else {
|
|
cm_info.vlan_id = 0xFFFF;
|
|
}
|
|
} else {
|
|
ethh = rbuf->mem.va;
|
|
|
|
if (ethh->evl_proto == htons(ETH_P_8021Q)) {
|
|
vtag = ntohs(ethh->evl_tag);
|
|
cm_info.user_pri = (vtag & EVL_PRI_MASK) >>
|
|
VLAN_PRIO_SHIFT;
|
|
cm_info.vlan_id = vtag & EVL_VLID_MASK;
|
|
irdma_debug(&cm_core->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"vlan_id=%d\n", cm_info.vlan_id);
|
|
} else {
|
|
cm_info.vlan_id = 0xFFFF;
|
|
}
|
|
}
|
|
tcph = (struct tcphdr *)rbuf->tcph;
|
|
|
|
if (rbuf->ipv4) {
|
|
cm_info.loc_addr[0] = ntohl(iph->ip_dst.s_addr);
|
|
cm_info.rem_addr[0] = ntohl(iph->ip_src.s_addr);
|
|
cm_info.ipv4 = true;
|
|
cm_info.tos = iph->ip_tos;
|
|
} else {
|
|
ip6h = (struct ip6_hdr *)rbuf->iph;
|
|
irdma_copy_ip_ntohl(cm_info.loc_addr,
|
|
ip6h->ip6_dst.__u6_addr.__u6_addr32);
|
|
irdma_copy_ip_ntohl(cm_info.rem_addr,
|
|
ip6h->ip6_src.__u6_addr.__u6_addr32);
|
|
cm_info.ipv4 = false;
|
|
cm_info.tos = (ip6h->ip6_vfc << 4) | ip6h->ip6_flow;
|
|
}
|
|
cm_info.loc_port = ntohs(tcph->th_dport);
|
|
cm_info.rem_port = ntohs(tcph->th_sport);
|
|
cm_node = irdma_find_node(cm_core, cm_info.rem_port, cm_info.rem_addr,
|
|
cm_info.loc_port, cm_info.loc_addr, cm_info.vlan_id);
|
|
|
|
if (!cm_node) {
|
|
/*
|
|
* Only type of packet accepted are for the PASSIVE open (syn only)
|
|
*/
|
|
if (!(tcph->th_flags & TH_SYN) || tcph->th_flags & TH_ACK)
|
|
return;
|
|
|
|
listener = irdma_find_listener(cm_core,
|
|
cm_info.loc_addr,
|
|
cm_info.ipv4,
|
|
cm_info.loc_port,
|
|
cm_info.vlan_id,
|
|
IRDMA_CM_LISTENER_ACTIVE_STATE);
|
|
if (!listener) {
|
|
cm_info.cm_id = NULL;
|
|
irdma_debug(&cm_core->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"no listener found\n");
|
|
return;
|
|
}
|
|
|
|
cm_info.cm_id = listener->cm_id;
|
|
cm_node = irdma_make_cm_node(cm_core, iwdev, &cm_info,
|
|
listener);
|
|
if (!cm_node) {
|
|
irdma_debug(&cm_core->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"allocate node failed\n");
|
|
atomic_dec(&listener->refcnt);
|
|
return;
|
|
}
|
|
|
|
if (!(tcph->th_flags & (TH_RST | TH_FIN))) {
|
|
cm_node->state = IRDMA_CM_STATE_LISTENING;
|
|
} else {
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
return;
|
|
}
|
|
|
|
atomic_inc(&cm_node->refcnt);
|
|
} else if (cm_node->state == IRDMA_CM_STATE_OFFLOADED) {
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
return;
|
|
}
|
|
|
|
irdma_process_pkt(cm_node, rbuf);
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
}
|
|
|
|
static int
|
|
irdma_add_qh(struct irdma_cm_node *cm_node, bool active)
|
|
{
|
|
if (!active)
|
|
irdma_add_conn_est_qh(cm_node);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
irdma_cm_free_ah_nop(struct irdma_cm_node *cm_node)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* irdma_setup_cm_core - setup top level instance of a cm core
|
|
* @iwdev: iwarp device structure
|
|
* @rdma_ver: HW version
|
|
*/
|
|
int
|
|
irdma_setup_cm_core(struct irdma_device *iwdev, u8 rdma_ver)
|
|
{
|
|
struct irdma_cm_core *cm_core = &iwdev->cm_core;
|
|
|
|
cm_core->iwdev = iwdev;
|
|
cm_core->dev = &iwdev->rf->sc_dev;
|
|
|
|
/* Handles CM event work items send to Iwarp core */
|
|
cm_core->event_wq = alloc_ordered_workqueue("iwarp-event-wq", 0);
|
|
if (!cm_core->event_wq)
|
|
return -ENOMEM;
|
|
|
|
INIT_LIST_HEAD(&cm_core->listen_list);
|
|
|
|
timer_setup(&cm_core->tcp_timer, irdma_cm_timer_tick, 0);
|
|
|
|
spin_lock_init(&cm_core->ht_lock);
|
|
spin_lock_init(&cm_core->listen_list_lock);
|
|
spin_lock_init(&cm_core->apbvt_lock);
|
|
switch (rdma_ver) {
|
|
case IRDMA_GEN_1:
|
|
cm_core->form_cm_frame = irdma_form_uda_cm_frame;
|
|
cm_core->cm_create_ah = irdma_add_qh;
|
|
cm_core->cm_free_ah = irdma_cm_free_ah_nop;
|
|
break;
|
|
case IRDMA_GEN_2:
|
|
default:
|
|
cm_core->form_cm_frame = irdma_form_ah_cm_frame;
|
|
cm_core->cm_create_ah = irdma_cm_create_ah;
|
|
cm_core->cm_free_ah = irdma_cm_free_ah;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_cleanup_cm_core - deallocate a top level instance of a
|
|
* cm core
|
|
* @cm_core: cm's core
|
|
*/
|
|
void
|
|
irdma_cleanup_cm_core(struct irdma_cm_core *cm_core)
|
|
{
|
|
if (!cm_core)
|
|
return;
|
|
|
|
del_timer_sync(&cm_core->tcp_timer);
|
|
|
|
destroy_workqueue(cm_core->event_wq);
|
|
cm_core->dev->ws_reset(&cm_core->iwdev->vsi);
|
|
}
|
|
|
|
/**
|
|
* irdma_init_tcp_ctx - setup qp context
|
|
* @cm_node: connection's node
|
|
* @tcp_info: offload info for tcp
|
|
* @iwqp: associate qp for the connection
|
|
*/
|
|
static void
|
|
irdma_init_tcp_ctx(struct irdma_cm_node *cm_node,
|
|
struct irdma_tcp_offload_info *tcp_info,
|
|
struct irdma_qp *iwqp)
|
|
{
|
|
tcp_info->ipv4 = cm_node->ipv4;
|
|
tcp_info->drop_ooo_seg = !iwqp->iwdev->iw_ooo;
|
|
tcp_info->wscale = true;
|
|
tcp_info->ignore_tcp_opt = true;
|
|
tcp_info->ignore_tcp_uns_opt = true;
|
|
tcp_info->no_nagle = false;
|
|
|
|
tcp_info->ttl = IRDMA_DEFAULT_TTL;
|
|
tcp_info->rtt_var = IRDMA_DEFAULT_RTT_VAR;
|
|
tcp_info->ss_thresh = IRDMA_DEFAULT_SS_THRESH;
|
|
tcp_info->rexmit_thresh = IRDMA_DEFAULT_REXMIT_THRESH;
|
|
|
|
tcp_info->tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
|
|
tcp_info->snd_wscale = cm_node->tcp_cntxt.snd_wscale;
|
|
tcp_info->rcv_wscale = cm_node->tcp_cntxt.rcv_wscale;
|
|
|
|
tcp_info->snd_nxt = cm_node->tcp_cntxt.loc_seq_num;
|
|
tcp_info->snd_wnd = cm_node->tcp_cntxt.snd_wnd;
|
|
tcp_info->rcv_nxt = cm_node->tcp_cntxt.rcv_nxt;
|
|
tcp_info->snd_max = cm_node->tcp_cntxt.loc_seq_num;
|
|
|
|
tcp_info->snd_una = cm_node->tcp_cntxt.loc_seq_num;
|
|
tcp_info->cwnd = 2 * cm_node->tcp_cntxt.mss;
|
|
tcp_info->snd_wl1 = cm_node->tcp_cntxt.rcv_nxt;
|
|
tcp_info->snd_wl2 = cm_node->tcp_cntxt.loc_seq_num;
|
|
tcp_info->max_snd_window = cm_node->tcp_cntxt.max_snd_wnd;
|
|
tcp_info->rcv_wnd = cm_node->tcp_cntxt.rcv_wnd
|
|
<< cm_node->tcp_cntxt.rcv_wscale;
|
|
|
|
tcp_info->flow_label = 0;
|
|
tcp_info->snd_mss = (u32)cm_node->tcp_cntxt.mss;
|
|
tcp_info->tos = cm_node->tos;
|
|
if (cm_node->vlan_id < VLAN_N_VID) {
|
|
tcp_info->insert_vlan_tag = true;
|
|
tcp_info->vlan_tag = cm_node->vlan_id;
|
|
tcp_info->vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT;
|
|
}
|
|
tcp_info->src_port = cm_node->loc_port;
|
|
tcp_info->dst_port = cm_node->rem_port;
|
|
tcp_info->arp_idx = (u16)irdma_arp_table(iwqp->iwdev->rf,
|
|
cm_node->rem_addr, NULL,
|
|
IRDMA_ARP_RESOLVE);
|
|
if (cm_node->ipv4) {
|
|
tcp_info->dest_ip_addr[3] = cm_node->rem_addr[0];
|
|
tcp_info->local_ipaddr[3] = cm_node->loc_addr[0];
|
|
} else {
|
|
memcpy(tcp_info->dest_ip_addr, cm_node->rem_addr,
|
|
sizeof(tcp_info->dest_ip_addr));
|
|
memcpy(tcp_info->local_ipaddr, cm_node->loc_addr,
|
|
sizeof(tcp_info->local_ipaddr));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_init_tsa_conn - setup qp for RTS
|
|
* @iwqp: associate qp for the connection
|
|
* @cm_node: connection's node
|
|
*/
|
|
static void
|
|
irdma_cm_init_tsa_conn(struct irdma_qp *iwqp,
|
|
struct irdma_cm_node *cm_node)
|
|
{
|
|
struct irdma_iwarp_offload_info *iwarp_info;
|
|
struct irdma_qp_host_ctx_info *ctx_info;
|
|
|
|
iwarp_info = &iwqp->iwarp_info;
|
|
ctx_info = &iwqp->ctx_info;
|
|
|
|
ctx_info->tcp_info = &iwqp->tcp_info;
|
|
ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
|
|
ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
|
|
|
|
iwarp_info->ord_size = cm_node->ord_size;
|
|
iwarp_info->ird_size = cm_node->ird_size;
|
|
iwarp_info->rd_en = true;
|
|
iwarp_info->rdmap_ver = 1;
|
|
iwarp_info->ddp_ver = 1;
|
|
iwarp_info->pd_id = iwqp->iwpd->sc_pd.pd_id;
|
|
|
|
ctx_info->tcp_info_valid = true;
|
|
ctx_info->iwarp_info_valid = true;
|
|
ctx_info->user_pri = cm_node->user_pri;
|
|
|
|
irdma_init_tcp_ctx(cm_node, &iwqp->tcp_info, iwqp);
|
|
if (cm_node->snd_mark_en) {
|
|
iwarp_info->snd_mark_en = true;
|
|
iwarp_info->snd_mark_offset = (iwqp->tcp_info.snd_nxt & SNDMARKER_SEQNMASK) +
|
|
cm_node->lsmm_size;
|
|
}
|
|
|
|
cm_node->state = IRDMA_CM_STATE_OFFLOADED;
|
|
iwqp->tcp_info.tcp_state = IRDMA_TCP_STATE_ESTABLISHED;
|
|
iwqp->tcp_info.src_mac_addr_idx = iwqp->iwdev->mac_ip_table_idx;
|
|
|
|
if (cm_node->rcv_mark_en) {
|
|
iwarp_info->rcv_mark_en = true;
|
|
iwarp_info->align_hdrs = true;
|
|
}
|
|
|
|
irdma_sc_qp_setctx(&iwqp->sc_qp, iwqp->host_ctx.va, ctx_info);
|
|
|
|
/* once tcp_info is set, no need to do it again */
|
|
ctx_info->tcp_info_valid = false;
|
|
ctx_info->iwarp_info_valid = false;
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_disconn - when a connection is being closed
|
|
* @iwqp: associated qp for the connection
|
|
*/
|
|
void
|
|
irdma_cm_disconn(struct irdma_qp *iwqp)
|
|
{
|
|
struct irdma_device *iwdev = iwqp->iwdev;
|
|
struct disconn_work *work;
|
|
unsigned long flags;
|
|
|
|
work = kzalloc(sizeof(*work), GFP_ATOMIC);
|
|
if (!work)
|
|
return;
|
|
|
|
spin_lock_irqsave(&iwdev->rf->qptable_lock, flags);
|
|
if (!iwdev->rf->qp_table[iwqp->ibqp.qp_num]) {
|
|
spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"qp_id %d is already freed\n", iwqp->ibqp.qp_num);
|
|
kfree(work);
|
|
return;
|
|
}
|
|
irdma_qp_add_ref(&iwqp->ibqp);
|
|
spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
|
|
|
|
work->iwqp = iwqp;
|
|
INIT_WORK(&work->work, irdma_disconnect_worker);
|
|
queue_work(iwdev->cleanup_wq, &work->work);
|
|
}
|
|
|
|
/**
|
|
* irdma_qp_disconnect - free qp and close cm
|
|
* @iwqp: associate qp for the connection
|
|
*/
|
|
static void
|
|
irdma_qp_disconnect(struct irdma_qp *iwqp)
|
|
{
|
|
struct irdma_device *iwdev = iwqp->iwdev;
|
|
|
|
iwqp->active_conn = 0;
|
|
/* close the CM node down if it is still active */
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM, "Call close API\n");
|
|
irdma_cm_close(iwqp->cm_node);
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_disconn_true - called by worker thread to disconnect qp
|
|
* @iwqp: associate qp for the connection
|
|
*/
|
|
static void
|
|
irdma_cm_disconn_true(struct irdma_qp *iwqp)
|
|
{
|
|
struct iw_cm_id *cm_id;
|
|
struct irdma_device *iwdev;
|
|
struct irdma_sc_qp *qp = &iwqp->sc_qp;
|
|
u16 last_ae;
|
|
u8 original_hw_tcp_state;
|
|
u8 original_ibqp_state;
|
|
int disconn_status = 0;
|
|
int issue_disconn = 0;
|
|
int issue_close = 0;
|
|
int issue_flush = 0;
|
|
unsigned long flags;
|
|
int err;
|
|
|
|
iwdev = iwqp->iwdev;
|
|
spin_lock_irqsave(&iwqp->lock, flags);
|
|
if (rdma_protocol_roce(&iwdev->ibdev, 1)) {
|
|
struct ib_qp_attr attr;
|
|
|
|
if (iwqp->flush_issued || iwqp->sc_qp.qp_uk.destroy_pending) {
|
|
spin_unlock_irqrestore(&iwqp->lock, flags);
|
|
return;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&iwqp->lock, flags);
|
|
|
|
attr.qp_state = IB_QPS_ERR;
|
|
irdma_modify_qp_roce(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
|
|
irdma_ib_qp_event(iwqp, qp->event_type);
|
|
return;
|
|
}
|
|
|
|
cm_id = iwqp->cm_id;
|
|
original_hw_tcp_state = iwqp->hw_tcp_state;
|
|
original_ibqp_state = iwqp->ibqp_state;
|
|
last_ae = iwqp->last_aeq;
|
|
|
|
if (qp->term_flags) {
|
|
issue_disconn = 1;
|
|
issue_close = 1;
|
|
iwqp->cm_id = NULL;
|
|
irdma_terminate_del_timer(qp);
|
|
if (!iwqp->flush_issued) {
|
|
iwqp->flush_issued = 1;
|
|
issue_flush = 1;
|
|
}
|
|
} else if ((original_hw_tcp_state == IRDMA_TCP_STATE_CLOSE_WAIT) ||
|
|
((original_ibqp_state == IB_QPS_RTS) &&
|
|
(last_ae == IRDMA_AE_LLP_CONNECTION_RESET))) {
|
|
issue_disconn = 1;
|
|
if (last_ae == IRDMA_AE_LLP_CONNECTION_RESET)
|
|
disconn_status = -ECONNRESET;
|
|
}
|
|
|
|
if (original_hw_tcp_state == IRDMA_TCP_STATE_CLOSED ||
|
|
original_hw_tcp_state == IRDMA_TCP_STATE_TIME_WAIT ||
|
|
last_ae == IRDMA_AE_RDMAP_ROE_BAD_LLP_CLOSE ||
|
|
last_ae == IRDMA_AE_BAD_CLOSE ||
|
|
last_ae == IRDMA_AE_LLP_CONNECTION_RESET || iwdev->rf->reset || !cm_id) {
|
|
issue_close = 1;
|
|
iwqp->cm_id = NULL;
|
|
qp->term_flags = 0;
|
|
if (!iwqp->flush_issued) {
|
|
iwqp->flush_issued = 1;
|
|
issue_flush = 1;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&iwqp->lock, flags);
|
|
if (issue_flush && !iwqp->sc_qp.qp_uk.destroy_pending) {
|
|
irdma_flush_wqes(iwqp, IRDMA_FLUSH_SQ | IRDMA_FLUSH_RQ |
|
|
IRDMA_FLUSH_WAIT);
|
|
|
|
if (qp->term_flags)
|
|
irdma_ib_qp_event(iwqp, qp->event_type);
|
|
}
|
|
|
|
if (!cm_id || !cm_id->event_handler)
|
|
return;
|
|
|
|
spin_lock_irqsave(&iwdev->cm_core.ht_lock, flags);
|
|
if (!iwqp->cm_node) {
|
|
spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
|
|
return;
|
|
}
|
|
atomic_inc(&iwqp->cm_node->refcnt);
|
|
|
|
spin_unlock_irqrestore(&iwdev->cm_core.ht_lock, flags);
|
|
|
|
if (issue_disconn) {
|
|
err = irdma_send_cm_event(iwqp->cm_node, cm_id,
|
|
IW_CM_EVENT_DISCONNECT,
|
|
disconn_status);
|
|
if (err)
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"disconnect event failed: - cm_id = %p\n",
|
|
cm_id);
|
|
}
|
|
if (issue_close) {
|
|
cm_id->provider_data = iwqp;
|
|
err = irdma_send_cm_event(iwqp->cm_node, cm_id,
|
|
IW_CM_EVENT_CLOSE, 0);
|
|
if (err)
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"close event failed: - cm_id = %p\n",
|
|
cm_id);
|
|
irdma_qp_disconnect(iwqp);
|
|
}
|
|
irdma_rem_ref_cm_node(iwqp->cm_node);
|
|
}
|
|
|
|
/**
|
|
* irdma_disconnect_worker - worker for connection close
|
|
* @work: points or disconn structure
|
|
*/
|
|
static void
|
|
irdma_disconnect_worker(struct work_struct *work)
|
|
{
|
|
struct disconn_work *dwork = container_of(work, struct disconn_work, work);
|
|
struct irdma_qp *iwqp = dwork->iwqp;
|
|
|
|
kfree(dwork);
|
|
irdma_cm_disconn_true(iwqp);
|
|
irdma_qp_rem_ref(&iwqp->ibqp);
|
|
}
|
|
|
|
/**
|
|
* irdma_free_lsmm_rsrc - free lsmm memory and deregister
|
|
* @iwqp: associate qp for the connection
|
|
*/
|
|
void
|
|
irdma_free_lsmm_rsrc(struct irdma_qp *iwqp)
|
|
{
|
|
struct irdma_device *iwdev;
|
|
|
|
iwdev = iwqp->iwdev;
|
|
|
|
if (iwqp->ietf_mem.va) {
|
|
if (iwqp->lsmm_mr)
|
|
iwdev->ibdev.dereg_mr(iwqp->lsmm_mr, NULL);
|
|
irdma_free_dma_mem(iwdev->rf->sc_dev.hw,
|
|
&iwqp->ietf_mem);
|
|
iwqp->ietf_mem.va = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_accept - registered call for connection to be accepted
|
|
* @cm_id: cm information for passive connection
|
|
* @conn_param: accpet parameters
|
|
*/
|
|
int
|
|
irdma_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
|
|
{
|
|
struct ib_qp *ibqp;
|
|
struct irdma_qp *iwqp;
|
|
struct irdma_device *iwdev;
|
|
struct irdma_sc_dev *dev;
|
|
struct irdma_cm_node *cm_node;
|
|
struct ib_qp_attr attr = {0};
|
|
int passive_state;
|
|
struct ib_mr *ibmr;
|
|
struct irdma_pd *iwpd;
|
|
u16 buf_len = 0;
|
|
struct irdma_kmem_info accept;
|
|
u64 tagged_offset;
|
|
int wait_ret;
|
|
int ret = 0;
|
|
|
|
ibqp = irdma_get_qp(cm_id->device, conn_param->qpn);
|
|
if (!ibqp)
|
|
return -EINVAL;
|
|
|
|
iwqp = to_iwqp(ibqp);
|
|
iwdev = iwqp->iwdev;
|
|
dev = &iwdev->rf->sc_dev;
|
|
cm_node = cm_id->provider_data;
|
|
|
|
if (((struct sockaddr_in *)&cm_id->local_addr)->sin_family == AF_INET) {
|
|
cm_node->ipv4 = true;
|
|
cm_node->vlan_id = irdma_get_vlan_ipv4(cm_node->loc_addr);
|
|
} else {
|
|
cm_node->ipv4 = false;
|
|
irdma_netdev_vlan_ipv6(cm_node->loc_addr, &cm_node->vlan_id,
|
|
NULL);
|
|
}
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM, "Accept vlan_id=%d\n",
|
|
cm_node->vlan_id);
|
|
|
|
if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) {
|
|
ret = -EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
passive_state = atomic_add_return(1, &cm_node->passive_state);
|
|
if (passive_state == IRDMA_SEND_RESET_EVENT) {
|
|
ret = -ECONNRESET;
|
|
goto error;
|
|
}
|
|
|
|
buf_len = conn_param->private_data_len + IRDMA_MAX_IETF_SIZE;
|
|
iwqp->ietf_mem.size = buf_len;
|
|
iwqp->ietf_mem.va = irdma_allocate_dma_mem(dev->hw, &iwqp->ietf_mem,
|
|
iwqp->ietf_mem.size, 1);
|
|
if (!iwqp->ietf_mem.va) {
|
|
ret = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
cm_node->pdata.size = conn_param->private_data_len;
|
|
accept.addr = iwqp->ietf_mem.va;
|
|
accept.size = irdma_cm_build_mpa_frame(cm_node, &accept, MPA_KEY_REPLY);
|
|
memcpy((u8 *)accept.addr + accept.size, conn_param->private_data,
|
|
conn_param->private_data_len);
|
|
|
|
if (cm_node->dev->ws_add(iwqp->sc_qp.vsi, cm_node->user_pri)) {
|
|
ret = -ENOMEM;
|
|
goto error;
|
|
}
|
|
iwqp->sc_qp.user_pri = cm_node->user_pri;
|
|
irdma_qp_add_qos(&iwqp->sc_qp);
|
|
if (cm_node->dev->hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_2)
|
|
iwdev->rf->check_fc(&iwdev->vsi, &iwqp->sc_qp);
|
|
/* setup our first outgoing iWarp send WQE (the IETF frame response) */
|
|
iwpd = iwqp->iwpd;
|
|
tagged_offset = (uintptr_t)iwqp->ietf_mem.va;
|
|
ibmr = irdma_reg_phys_mr(&iwpd->ibpd, iwqp->ietf_mem.pa, buf_len,
|
|
IB_ACCESS_LOCAL_WRITE, &tagged_offset);
|
|
if (IS_ERR(ibmr)) {
|
|
ret = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
ibmr->pd = &iwpd->ibpd;
|
|
ibmr->device = iwpd->ibpd.device;
|
|
iwqp->lsmm_mr = ibmr;
|
|
if (iwqp->page)
|
|
iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
|
|
|
|
cm_node->lsmm_size = accept.size + conn_param->private_data_len;
|
|
irdma_sc_send_lsmm(&iwqp->sc_qp, iwqp->ietf_mem.va, cm_node->lsmm_size,
|
|
ibmr->lkey);
|
|
|
|
if (iwqp->page)
|
|
kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
|
|
|
|
iwqp->cm_id = cm_id;
|
|
cm_node->cm_id = cm_id;
|
|
|
|
cm_id->provider_data = iwqp;
|
|
iwqp->active_conn = 0;
|
|
iwqp->cm_node = cm_node;
|
|
cm_node->iwqp = iwqp;
|
|
irdma_cm_init_tsa_conn(iwqp, cm_node);
|
|
irdma_qp_add_ref(&iwqp->ibqp);
|
|
cm_id->add_ref(cm_id);
|
|
|
|
attr.qp_state = IB_QPS_RTS;
|
|
cm_node->qhash_set = false;
|
|
cm_node->cm_core->cm_free_ah(cm_node);
|
|
|
|
irdma_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
|
|
if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) {
|
|
wait_ret = wait_event_interruptible_timeout(iwqp->waitq,
|
|
iwqp->rts_ae_rcvd,
|
|
IRDMA_MAX_TIMEOUT);
|
|
if (!wait_ret) {
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n",
|
|
cm_node, cm_node->loc_port,
|
|
cm_node->rem_port, cm_node->cm_id);
|
|
ret = -ECONNRESET;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
irdma_send_cm_event(cm_node, cm_id, IW_CM_EVENT_ESTABLISHED, 0);
|
|
cm_node->accelerated = true;
|
|
complete(&cm_node->establish_comp);
|
|
|
|
if (cm_node->accept_pend) {
|
|
atomic_dec(&cm_node->listener->pend_accepts_cnt);
|
|
cm_node->accept_pend = 0;
|
|
}
|
|
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"rem_port=0x%04x, loc_port=0x%04x rem_addr=%x loc_addr=%x cm_node=%p cm_id=%p qp_id=%d\n\n",
|
|
cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr[0],
|
|
cm_node->loc_addr[0], cm_node, cm_id, ibqp->qp_num);
|
|
cm_node->cm_core->stats_accepts++;
|
|
|
|
return 0;
|
|
error:
|
|
irdma_free_lsmm_rsrc(iwqp);
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* irdma_reject - registered call for connection to be rejected
|
|
* @cm_id: cm information for passive connection
|
|
* @pdata: private data to be sent
|
|
* @pdata_len: private data length
|
|
*/
|
|
int
|
|
irdma_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
|
|
{
|
|
struct irdma_device *iwdev;
|
|
struct irdma_cm_node *cm_node;
|
|
|
|
cm_node = cm_id->provider_data;
|
|
cm_node->pdata.size = pdata_len;
|
|
|
|
iwdev = to_iwdev(cm_id->device);
|
|
if (!iwdev)
|
|
return -EINVAL;
|
|
|
|
cm_node->cm_core->stats_rejects++;
|
|
|
|
if (pdata_len + sizeof(struct ietf_mpa_v2) > IRDMA_MAX_CM_BUF)
|
|
return -EINVAL;
|
|
|
|
return irdma_cm_reject(cm_node, pdata, pdata_len);
|
|
}
|
|
|
|
/**
|
|
* irdma_connect - registered call for connection to be established
|
|
* @cm_id: cm information for passive connection
|
|
* @conn_param: Information about the connection
|
|
*/
|
|
int
|
|
irdma_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
|
|
{
|
|
struct ib_qp *ibqp;
|
|
struct irdma_qp *iwqp;
|
|
struct irdma_device *iwdev;
|
|
struct irdma_cm_node *cm_node;
|
|
struct irdma_cm_info cm_info;
|
|
struct sockaddr_in *laddr;
|
|
struct sockaddr_in *raddr;
|
|
struct sockaddr_in6 *laddr6;
|
|
struct sockaddr_in6 *raddr6;
|
|
int ret = 0;
|
|
|
|
ibqp = irdma_get_qp(cm_id->device, conn_param->qpn);
|
|
if (!ibqp)
|
|
return -EINVAL;
|
|
iwqp = to_iwqp(ibqp);
|
|
if (!iwqp)
|
|
return -EINVAL;
|
|
iwdev = iwqp->iwdev;
|
|
if (!iwdev)
|
|
return -EINVAL;
|
|
|
|
laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
|
|
raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
|
|
laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
|
|
raddr6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
|
|
|
|
if (!(laddr->sin_port) || !(raddr->sin_port))
|
|
return -EINVAL;
|
|
|
|
iwqp->active_conn = 1;
|
|
iwqp->cm_id = NULL;
|
|
cm_id->provider_data = iwqp;
|
|
|
|
/* set up the connection params for the node */
|
|
if (cm_id->remote_addr.ss_family == AF_INET) {
|
|
if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4)
|
|
return -EINVAL;
|
|
|
|
cm_info.ipv4 = true;
|
|
memset(cm_info.loc_addr, 0, sizeof(cm_info.loc_addr));
|
|
memset(cm_info.rem_addr, 0, sizeof(cm_info.rem_addr));
|
|
cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
|
|
cm_info.rem_addr[0] = ntohl(raddr->sin_addr.s_addr);
|
|
cm_info.loc_port = ntohs(laddr->sin_port);
|
|
cm_info.rem_port = ntohs(raddr->sin_port);
|
|
cm_info.vlan_id = irdma_get_vlan_ipv4(cm_info.loc_addr);
|
|
} else {
|
|
if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6)
|
|
return -EINVAL;
|
|
|
|
cm_info.ipv4 = false;
|
|
irdma_copy_ip_ntohl(cm_info.loc_addr,
|
|
laddr6->sin6_addr.__u6_addr.__u6_addr32);
|
|
irdma_copy_ip_ntohl(cm_info.rem_addr,
|
|
raddr6->sin6_addr.__u6_addr.__u6_addr32);
|
|
cm_info.loc_port = ntohs(laddr6->sin6_port);
|
|
cm_info.rem_port = ntohs(raddr6->sin6_port);
|
|
irdma_netdev_vlan_ipv6(cm_info.loc_addr, &cm_info.vlan_id, NULL);
|
|
}
|
|
cm_info.cm_id = cm_id;
|
|
cm_info.qh_qpid = iwdev->vsi.ilq->qp_id;
|
|
cm_info.tos = cm_id->tos;
|
|
if (iwdev->vsi.dscp_mode) {
|
|
cm_info.user_pri =
|
|
iwqp->sc_qp.vsi->dscp_map[irdma_tos2dscp(cm_info.tos)];
|
|
} else {
|
|
cm_info.user_pri = rt_tos2priority(cm_id->tos);
|
|
cm_info.user_pri =
|
|
irdma_iw_get_vlan_prio(cm_info.loc_addr,
|
|
cm_info.user_pri,
|
|
cm_info.ipv4);
|
|
}
|
|
|
|
if (iwqp->sc_qp.dev->ws_add(iwqp->sc_qp.vsi, cm_info.user_pri))
|
|
return -ENOMEM;
|
|
iwqp->sc_qp.user_pri = cm_info.user_pri;
|
|
irdma_qp_add_qos(&iwqp->sc_qp);
|
|
if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_2)
|
|
iwdev->rf->check_fc(&iwdev->vsi, &iwqp->sc_qp);
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_DCB, "TOS:[%d] UP:[%d]\n",
|
|
cm_id->tos, cm_info.user_pri);
|
|
|
|
ret = irdma_create_cm_node(&iwdev->cm_core, iwdev, conn_param, &cm_info,
|
|
&cm_node);
|
|
if (ret)
|
|
return ret;
|
|
ret = cm_node->cm_core->cm_create_ah(cm_node, true);
|
|
if (ret)
|
|
goto err;
|
|
if (irdma_manage_qhash(iwdev, &cm_info,
|
|
IRDMA_QHASH_TYPE_TCP_ESTABLISHED,
|
|
IRDMA_QHASH_MANAGE_TYPE_ADD, NULL, true)) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
cm_node->qhash_set = true;
|
|
|
|
cm_node->apbvt_entry = irdma_add_apbvt(iwdev, cm_info.loc_port);
|
|
if (!cm_node->apbvt_entry) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
cm_node->apbvt_set = true;
|
|
iwqp->cm_node = cm_node;
|
|
cm_node->iwqp = iwqp;
|
|
iwqp->cm_id = cm_id;
|
|
irdma_qp_add_ref(&iwqp->ibqp);
|
|
cm_id->add_ref(cm_id);
|
|
|
|
if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) {
|
|
cm_node->state = IRDMA_CM_STATE_SYN_SENT;
|
|
ret = irdma_send_syn(cm_node, 0);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"rem_port=0x%04x, loc_port=0x%04x rem_addr=%x loc_addr=%x cm_node=%p cm_id=%p qp_id = %d\n\n",
|
|
cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr[0],
|
|
cm_node->loc_addr[0], cm_node, cm_id, ibqp->qp_num);
|
|
|
|
return 0;
|
|
|
|
err:
|
|
if (cm_info.ipv4)
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"connect() FAILED: dest addr=%x",
|
|
cm_info.rem_addr[0]);
|
|
else
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"connect() FAILED: dest addr=%x:%x:%x:%x",
|
|
IRDMA_PRINT_IP6(cm_info.rem_addr));
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
iwdev->cm_core.stats_connect_errs++;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* irdma_create_listen - registered call creating listener
|
|
* @cm_id: cm information for passive connection
|
|
* @backlog: to max accept pending count
|
|
*/
|
|
int
|
|
irdma_create_listen(struct iw_cm_id *cm_id, int backlog)
|
|
{
|
|
struct irdma_device *iwdev;
|
|
struct irdma_cm_listener *cm_listen_node;
|
|
struct irdma_cm_info cm_info = {0};
|
|
struct sockaddr_in *laddr;
|
|
struct sockaddr_in6 *laddr6;
|
|
bool wildcard = false;
|
|
int err;
|
|
|
|
iwdev = to_iwdev(cm_id->device);
|
|
if (!iwdev)
|
|
return -EINVAL;
|
|
|
|
laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
|
|
laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
|
|
cm_info.qh_qpid = iwdev->vsi.ilq->qp_id;
|
|
|
|
if (laddr->sin_family == AF_INET) {
|
|
if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4)
|
|
return -EINVAL;
|
|
|
|
cm_info.ipv4 = true;
|
|
cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr);
|
|
cm_info.loc_port = ntohs(laddr->sin_port);
|
|
|
|
if (laddr->sin_addr.s_addr != htonl(INADDR_ANY)) {
|
|
cm_info.vlan_id = irdma_get_vlan_ipv4(cm_info.loc_addr);
|
|
} else {
|
|
cm_info.vlan_id = 0xFFFF;
|
|
wildcard = true;
|
|
}
|
|
} else {
|
|
if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6)
|
|
return -EINVAL;
|
|
|
|
cm_info.ipv4 = false;
|
|
irdma_copy_ip_ntohl(cm_info.loc_addr,
|
|
laddr6->sin6_addr.__u6_addr.__u6_addr32);
|
|
cm_info.loc_port = ntohs(laddr6->sin6_port);
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&laddr6->sin6_addr)) {
|
|
irdma_netdev_vlan_ipv6(cm_info.loc_addr,
|
|
&cm_info.vlan_id, NULL);
|
|
} else {
|
|
cm_info.vlan_id = 0xFFFF;
|
|
wildcard = true;
|
|
}
|
|
}
|
|
|
|
if (cm_info.vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode)
|
|
cm_info.vlan_id = 0;
|
|
cm_info.backlog = backlog;
|
|
cm_info.cm_id = cm_id;
|
|
|
|
cm_listen_node = irdma_make_listen_node(&iwdev->cm_core, iwdev,
|
|
&cm_info);
|
|
if (!cm_listen_node) {
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"cm_listen_node == NULL\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
cm_id->provider_data = cm_listen_node;
|
|
|
|
cm_listen_node->tos = cm_id->tos;
|
|
if (iwdev->vsi.dscp_mode)
|
|
cm_listen_node->user_pri =
|
|
iwdev->vsi.dscp_map[irdma_tos2dscp(cm_id->tos)];
|
|
else
|
|
cm_listen_node->user_pri = rt_tos2priority(cm_id->tos);
|
|
cm_info.user_pri = cm_listen_node->user_pri;
|
|
if (!cm_listen_node->reused_node) {
|
|
if (wildcard) {
|
|
err = irdma_add_mqh(iwdev, &cm_info, cm_listen_node);
|
|
if (err)
|
|
goto error;
|
|
} else {
|
|
if (!iwdev->vsi.dscp_mode)
|
|
cm_info.user_pri = cm_listen_node->user_pri =
|
|
irdma_iw_get_vlan_prio(cm_info.loc_addr,
|
|
cm_info.user_pri,
|
|
cm_info.ipv4);
|
|
err = irdma_manage_qhash(iwdev, &cm_info,
|
|
IRDMA_QHASH_TYPE_TCP_SYN,
|
|
IRDMA_QHASH_MANAGE_TYPE_ADD,
|
|
NULL, true);
|
|
if (err)
|
|
goto error;
|
|
|
|
cm_listen_node->qhash_set = true;
|
|
}
|
|
|
|
cm_listen_node->apbvt_entry = irdma_add_apbvt(iwdev,
|
|
cm_info.loc_port);
|
|
if (!cm_listen_node->apbvt_entry)
|
|
goto error;
|
|
}
|
|
cm_id->add_ref(cm_id);
|
|
cm_listen_node->cm_core->stats_listen_created++;
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"loc_port=0x%04x loc_addr=%x cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d\n",
|
|
cm_listen_node->loc_port, cm_listen_node->loc_addr[0],
|
|
cm_listen_node, cm_listen_node->cm_id,
|
|
cm_listen_node->qhash_set, cm_listen_node->vlan_id);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
|
|
irdma_cm_del_listen(&iwdev->cm_core, cm_listen_node, false);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* irdma_destroy_listen - registered call to destroy listener
|
|
* @cm_id: cm information for passive connection
|
|
*/
|
|
int
|
|
irdma_destroy_listen(struct iw_cm_id *cm_id)
|
|
{
|
|
struct irdma_device *iwdev;
|
|
|
|
iwdev = to_iwdev(cm_id->device);
|
|
if (cm_id->provider_data)
|
|
irdma_cm_del_listen(&iwdev->cm_core, cm_id->provider_data,
|
|
true);
|
|
else
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"cm_id->provider_data was NULL\n");
|
|
|
|
cm_id->rem_ref(cm_id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* irdma_iw_teardown_list_prep - add conn nodes slated for tear
|
|
* down to list
|
|
* @cm_core: cm's core
|
|
* @teardown_list: a list to which cm_node will be selected
|
|
* @ipaddr: pointer to ip address
|
|
* @nfo: pointer to cm_info structure instance
|
|
* @disconnect_all: flag indicating disconnect all QPs
|
|
*/
|
|
static void
|
|
irdma_iw_teardown_list_prep(struct irdma_cm_core *cm_core,
|
|
struct list_head *teardown_list,
|
|
u32 *ipaddr,
|
|
struct irdma_cm_info *nfo,
|
|
bool disconnect_all)
|
|
{
|
|
struct irdma_cm_node *cm_node;
|
|
int bkt;
|
|
|
|
HASH_FOR_EACH_RCU(cm_core->cm_hash_tbl, bkt, cm_node, list) {
|
|
if ((disconnect_all ||
|
|
(nfo->vlan_id == cm_node->vlan_id &&
|
|
!memcmp(cm_node->loc_addr, ipaddr, nfo->ipv4 ? 4 : 16))) &&
|
|
atomic_inc_not_zero(&cm_node->refcnt))
|
|
list_add(&cm_node->teardown_entry, teardown_list);
|
|
}
|
|
}
|
|
|
|
static inline bool
|
|
irdma_ip_vlan_match(u32 *ip1, u16 vlan_id1,
|
|
bool check_vlan, u32 *ip2,
|
|
u16 vlan_id2, bool ipv4)
|
|
{
|
|
return (!check_vlan || vlan_id1 == vlan_id2) &&
|
|
!memcmp(ip1, ip2, ipv4 ? 4 : 16);
|
|
}
|
|
|
|
/**
|
|
* irdma_roce_teardown_list_prep - add conn nodes slated for
|
|
* tear down to list
|
|
* @iwdev: RDMA device
|
|
* @teardown_list: a list to which cm_node will be selected
|
|
* @ipaddr: pointer to ip address
|
|
* @nfo: pointer to cm_info structure instance
|
|
* @disconnect_all: flag indicating disconnect all QPs
|
|
*/
|
|
static void
|
|
irdma_roce_teardown_list_prep(struct irdma_device *iwdev,
|
|
struct list_head *teardown_list,
|
|
u32 *ipaddr,
|
|
struct irdma_cm_info *nfo,
|
|
bool disconnect_all)
|
|
{
|
|
struct irdma_sc_vsi *vsi = &iwdev->vsi;
|
|
struct irdma_sc_qp *sc_qp;
|
|
struct list_head *list_node;
|
|
struct irdma_qp *qp;
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) {
|
|
mutex_lock(&vsi->qos[i].qos_mutex);
|
|
list_for_each(list_node, &vsi->qos[i].qplist) {
|
|
u32 qp_ip[4];
|
|
|
|
sc_qp = container_of(list_node, struct irdma_sc_qp,
|
|
list);
|
|
if (sc_qp->qp_uk.qp_type != IRDMA_QP_TYPE_ROCE_RC)
|
|
continue;
|
|
|
|
qp = sc_qp->qp_uk.back_qp;
|
|
if (!disconnect_all) {
|
|
if (nfo->ipv4)
|
|
qp_ip[0] = qp->udp_info.local_ipaddr[3];
|
|
else
|
|
memcpy(qp_ip,
|
|
&qp->udp_info.local_ipaddr[0],
|
|
sizeof(qp_ip));
|
|
}
|
|
|
|
if (disconnect_all ||
|
|
irdma_ip_vlan_match(qp_ip,
|
|
qp->udp_info.vlan_tag & EVL_VLID_MASK,
|
|
qp->udp_info.insert_vlan_tag,
|
|
ipaddr, nfo->vlan_id, nfo->ipv4)) {
|
|
spin_lock_irqsave(&iwdev->rf->qptable_lock, flags);
|
|
if (iwdev->rf->qp_table[sc_qp->qp_uk.qp_id]) {
|
|
irdma_qp_add_ref(&qp->ibqp);
|
|
list_add(&qp->teardown_entry, teardown_list);
|
|
}
|
|
spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
|
|
}
|
|
}
|
|
mutex_unlock(&vsi->qos[i].qos_mutex);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_event_connected - handle connected active node
|
|
* @event: the info for cm_node of connection
|
|
*/
|
|
static void
|
|
irdma_cm_event_connected(struct irdma_cm_event *event)
|
|
{
|
|
struct irdma_qp *iwqp;
|
|
struct irdma_device *iwdev;
|
|
struct irdma_cm_node *cm_node;
|
|
struct irdma_sc_dev *dev;
|
|
struct ib_qp_attr attr = {0};
|
|
struct iw_cm_id *cm_id;
|
|
int status;
|
|
bool read0;
|
|
int wait_ret = 0;
|
|
|
|
cm_node = event->cm_node;
|
|
cm_id = cm_node->cm_id;
|
|
iwqp = cm_id->provider_data;
|
|
iwdev = iwqp->iwdev;
|
|
dev = &iwdev->rf->sc_dev;
|
|
if (iwqp->sc_qp.qp_uk.destroy_pending) {
|
|
status = -ETIMEDOUT;
|
|
goto error;
|
|
}
|
|
|
|
irdma_cm_init_tsa_conn(iwqp, cm_node);
|
|
read0 = (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO);
|
|
if (iwqp->page)
|
|
iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(iwqp->page);
|
|
irdma_sc_send_rtt(&iwqp->sc_qp, read0);
|
|
if (iwqp->page)
|
|
kunmap_local(iwqp->sc_qp.qp_uk.sq_base);
|
|
|
|
attr.qp_state = IB_QPS_RTS;
|
|
cm_node->qhash_set = false;
|
|
irdma_modify_qp(&iwqp->ibqp, &attr, IB_QP_STATE, NULL);
|
|
if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) {
|
|
wait_ret = wait_event_interruptible_timeout(iwqp->waitq,
|
|
iwqp->rts_ae_rcvd,
|
|
IRDMA_MAX_TIMEOUT);
|
|
if (!wait_ret)
|
|
irdma_debug(&iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n",
|
|
cm_node, cm_node->loc_port,
|
|
cm_node->rem_port, cm_node->cm_id);
|
|
}
|
|
|
|
irdma_send_cm_event(cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY, 0);
|
|
cm_node->accelerated = true;
|
|
complete(&cm_node->establish_comp);
|
|
cm_node->cm_core->cm_free_ah(cm_node);
|
|
return;
|
|
|
|
error:
|
|
iwqp->cm_id = NULL;
|
|
cm_id->provider_data = NULL;
|
|
irdma_send_cm_event(event->cm_node, cm_id, IW_CM_EVENT_CONNECT_REPLY,
|
|
status);
|
|
irdma_rem_ref_cm_node(event->cm_node);
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_event_reset - handle reset
|
|
* @event: the info for cm_node of connection
|
|
*/
|
|
static void
|
|
irdma_cm_event_reset(struct irdma_cm_event *event)
|
|
{
|
|
struct irdma_cm_node *cm_node = event->cm_node;
|
|
struct iw_cm_id *cm_id = cm_node->cm_id;
|
|
struct irdma_qp *iwqp;
|
|
|
|
if (!cm_id)
|
|
return;
|
|
|
|
iwqp = cm_id->provider_data;
|
|
if (!iwqp)
|
|
return;
|
|
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"reset event %p - cm_id = %p\n", event->cm_node, cm_id);
|
|
iwqp->cm_id = NULL;
|
|
|
|
irdma_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_DISCONNECT,
|
|
-ECONNRESET);
|
|
irdma_send_cm_event(cm_node, cm_node->cm_id, IW_CM_EVENT_CLOSE, 0);
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_event_handler - send event to cm upper layer
|
|
* @work: pointer of cm event info.
|
|
*/
|
|
static void
|
|
irdma_cm_event_handler(struct work_struct *work)
|
|
{
|
|
struct irdma_cm_event *event = container_of(work, struct irdma_cm_event, event_work);
|
|
struct irdma_cm_node *cm_node;
|
|
|
|
if (!event || !event->cm_node || !event->cm_node->cm_core)
|
|
return;
|
|
|
|
cm_node = event->cm_node;
|
|
|
|
switch (event->type) {
|
|
case IRDMA_CM_EVENT_MPA_REQ:
|
|
irdma_send_cm_event(cm_node, cm_node->cm_id,
|
|
IW_CM_EVENT_CONNECT_REQUEST, 0);
|
|
break;
|
|
case IRDMA_CM_EVENT_RESET:
|
|
irdma_cm_event_reset(event);
|
|
break;
|
|
case IRDMA_CM_EVENT_CONNECTED:
|
|
if (!event->cm_node->cm_id ||
|
|
event->cm_node->state != IRDMA_CM_STATE_OFFLOADED)
|
|
break;
|
|
irdma_cm_event_connected(event);
|
|
break;
|
|
case IRDMA_CM_EVENT_MPA_REJECT:
|
|
if (!event->cm_node->cm_id ||
|
|
cm_node->state == IRDMA_CM_STATE_OFFLOADED)
|
|
break;
|
|
irdma_send_cm_event(cm_node, cm_node->cm_id,
|
|
IW_CM_EVENT_CONNECT_REPLY, -ECONNREFUSED);
|
|
break;
|
|
case IRDMA_CM_EVENT_ABORTED:
|
|
if (!event->cm_node->cm_id ||
|
|
event->cm_node->state == IRDMA_CM_STATE_OFFLOADED)
|
|
break;
|
|
irdma_event_connect_error(event);
|
|
break;
|
|
default:
|
|
irdma_debug(&cm_node->iwdev->rf->sc_dev, IRDMA_DEBUG_CM,
|
|
"bad event type = %d\n", event->type);
|
|
break;
|
|
}
|
|
|
|
irdma_rem_ref_cm_node(event->cm_node);
|
|
kfree(event);
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_post_event - queue event request for worker thread
|
|
* @event: cm node's info for up event call
|
|
*/
|
|
static void
|
|
irdma_cm_post_event(struct irdma_cm_event *event)
|
|
{
|
|
atomic_inc(&event->cm_node->refcnt);
|
|
INIT_WORK(&event->event_work, irdma_cm_event_handler);
|
|
queue_work(event->cm_node->cm_core->event_wq, &event->event_work);
|
|
}
|
|
|
|
/**
|
|
* irdma_cm_teardown_connections - teardown QPs
|
|
* @iwdev: device pointer
|
|
* @ipaddr: Pointer to IPv4 or IPv6 address
|
|
* @nfo: Connection info
|
|
* @disconnect_all: flag indicating disconnect all QPs
|
|
*
|
|
* teardown QPs where source or destination addr matches ip addr
|
|
*/
|
|
static void __unused
|
|
irdma_cm_teardown_connections(struct irdma_device *iwdev,
|
|
u32 *ipaddr,
|
|
struct irdma_cm_info *nfo,
|
|
bool disconnect_all)
|
|
{
|
|
struct irdma_cm_core *cm_core = &iwdev->cm_core;
|
|
struct list_head *list_core_temp;
|
|
struct list_head *list_node;
|
|
struct irdma_cm_node *cm_node;
|
|
struct list_head teardown_list;
|
|
struct ib_qp_attr attr;
|
|
struct irdma_qp *qp;
|
|
|
|
INIT_LIST_HEAD(&teardown_list);
|
|
|
|
rcu_read_lock();
|
|
irdma_iw_teardown_list_prep(cm_core, &teardown_list, ipaddr, nfo, disconnect_all);
|
|
rcu_read_unlock();
|
|
|
|
attr.qp_state = IB_QPS_ERR;
|
|
list_for_each_safe(list_node, list_core_temp, &teardown_list) {
|
|
cm_node = container_of(list_node, struct irdma_cm_node,
|
|
teardown_entry);
|
|
irdma_modify_qp(&cm_node->iwqp->ibqp, &attr, IB_QP_STATE, NULL);
|
|
if (iwdev->rf->reset)
|
|
irdma_cm_disconn(cm_node->iwqp);
|
|
irdma_rem_ref_cm_node(cm_node);
|
|
}
|
|
|
|
if (!rdma_protocol_roce(&iwdev->ibdev, 1))
|
|
return;
|
|
|
|
INIT_LIST_HEAD(&teardown_list);
|
|
irdma_roce_teardown_list_prep(iwdev, &teardown_list, ipaddr, nfo, disconnect_all);
|
|
|
|
list_for_each_safe(list_node, list_core_temp, &teardown_list) {
|
|
qp = container_of(list_node, struct irdma_qp, teardown_entry);
|
|
irdma_modify_qp_roce(&qp->ibqp, &attr, IB_QP_STATE, NULL);
|
|
irdma_ib_qp_event(qp, IRDMA_QP_EVENT_CATASTROPHIC);
|
|
irdma_qp_rem_ref(&qp->ibqp);
|
|
}
|
|
}
|