mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
4421 lines
120 KiB
4421 lines
120 KiB
// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB |
|
/* Copyright (c) 2015 - 2021 Intel Corporation */ |
|
#include "main.h" |
|
#include "trace.h" |
|
|
|
static void irdma_cm_post_event(struct irdma_cm_event *event); |
|
static void irdma_disconnect_worker(struct work_struct *work); |
|
|
|
/** |
|
* irdma_free_sqbuf - put back puda buffer if refcount is 0 |
|
* @vsi: The VSI structure of the device |
|
* @bufp: puda buffer to free |
|
*/ |
|
void irdma_free_sqbuf(struct irdma_sc_vsi *vsi, void *bufp) |
|
{ |
|
struct irdma_puda_buf *buf = bufp; |
|
struct irdma_puda_rsrc *ilq = vsi->ilq; |
|
|
|
if (refcount_dec_and_test(&buf->refcount)) |
|
irdma_puda_ret_bufpool(ilq, buf); |
|
} |
|
|
|
/** |
|
* irdma_record_ird_ord - Record IRD/ORD passed in |
|
* @cm_node: connection's node |
|
* @conn_ird: connection IRD |
|
* @conn_ord: connection ORD |
|
*/ |
|
static void irdma_record_ird_ord(struct irdma_cm_node *cm_node, u32 conn_ird, |
|
u32 conn_ord) |
|
{ |
|
if (conn_ird > cm_node->dev->hw_attrs.max_hw_ird) |
|
conn_ird = cm_node->dev->hw_attrs.max_hw_ird; |
|
|
|
if (conn_ord > cm_node->dev->hw_attrs.max_hw_ord) |
|
conn_ord = cm_node->dev->hw_attrs.max_hw_ord; |
|
else if (!conn_ord && cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO) |
|
conn_ord = 1; |
|
cm_node->ird_size = conn_ird; |
|
cm_node->ord_size = conn_ord; |
|
} |
|
|
|
/** |
|
* irdma_copy_ip_ntohl - copy IP address from network to host |
|
* @dst: IP address in host order |
|
* @src: IP address in network order (big endian) |
|
*/ |
|
void irdma_copy_ip_ntohl(u32 *dst, __be32 *src) |
|
{ |
|
*dst++ = ntohl(*src++); |
|
*dst++ = ntohl(*src++); |
|
*dst++ = ntohl(*src++); |
|
*dst = ntohl(*src); |
|
} |
|
|
|
/** |
|
* irdma_copy_ip_htonl - copy IP address from host to network order |
|
* @dst: IP address in network order (big endian) |
|
* @src: IP address in host order |
|
*/ |
|
void irdma_copy_ip_htonl(__be32 *dst, u32 *src) |
|
{ |
|
*dst++ = htonl(*src++); |
|
*dst++ = htonl(*src++); |
|
*dst++ = htonl(*src++); |
|
*dst = htonl(*src); |
|
} |
|
|
|
/** |
|
* irdma_get_addr_info |
|
* @cm_node: contains ip/tcp info |
|
* @cm_info: to get a copy of the cm_node ip/tcp info |
|
*/ |
|
static void irdma_get_addr_info(struct irdma_cm_node *cm_node, |
|
struct irdma_cm_info *cm_info) |
|
{ |
|
memset(cm_info, 0, sizeof(*cm_info)); |
|
cm_info->ipv4 = cm_node->ipv4; |
|
cm_info->vlan_id = cm_node->vlan_id; |
|
memcpy(cm_info->loc_addr, cm_node->loc_addr, sizeof(cm_info->loc_addr)); |
|
memcpy(cm_info->rem_addr, cm_node->rem_addr, sizeof(cm_info->rem_addr)); |
|
cm_info->loc_port = cm_node->loc_port; |
|
cm_info->rem_port = cm_node->rem_port; |
|
} |
|
|
|
/** |
|
* irdma_fill_sockaddr4 - fill in addr info for IPv4 connection |
|
* @cm_node: connection's node |
|
* @event: upper layer's cm event |
|
*/ |
|
static inline void irdma_fill_sockaddr4(struct irdma_cm_node *cm_node, |
|
struct iw_cm_event *event) |
|
{ |
|
struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr; |
|
struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr; |
|
|
|
laddr->sin_family = AF_INET; |
|
raddr->sin_family = AF_INET; |
|
|
|
laddr->sin_port = htons(cm_node->loc_port); |
|
raddr->sin_port = htons(cm_node->rem_port); |
|
|
|
laddr->sin_addr.s_addr = htonl(cm_node->loc_addr[0]); |
|
raddr->sin_addr.s_addr = htonl(cm_node->rem_addr[0]); |
|
} |
|
|
|
/** |
|
* irdma_fill_sockaddr6 - fill in addr info for IPv6 connection |
|
* @cm_node: connection's node |
|
* @event: upper layer's cm event |
|
*/ |
|
static inline void irdma_fill_sockaddr6(struct irdma_cm_node *cm_node, |
|
struct iw_cm_event *event) |
|
{ |
|
struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr; |
|
struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)&event->remote_addr; |
|
|
|
laddr6->sin6_family = AF_INET6; |
|
raddr6->sin6_family = AF_INET6; |
|
|
|
laddr6->sin6_port = htons(cm_node->loc_port); |
|
raddr6->sin6_port = htons(cm_node->rem_port); |
|
|
|
irdma_copy_ip_htonl(laddr6->sin6_addr.in6_u.u6_addr32, |
|
cm_node->loc_addr); |
|
irdma_copy_ip_htonl(raddr6->sin6_addr.in6_u.u6_addr32, |
|
cm_node->rem_addr); |
|
} |
|
|
|
/** |
|
* irdma_get_cmevent_info - for cm event upcall |
|
* @cm_node: connection's node |
|
* @cm_id: upper layers cm struct for the event |
|
* @event: upper layer's cm event |
|
*/ |
|
static inline void irdma_get_cmevent_info(struct irdma_cm_node *cm_node, |
|
struct iw_cm_id *cm_id, |
|
struct iw_cm_event *event) |
|
{ |
|
memcpy(&event->local_addr, &cm_id->m_local_addr, |
|
sizeof(event->local_addr)); |
|
memcpy(&event->remote_addr, &cm_id->m_remote_addr, |
|
sizeof(event->remote_addr)); |
|
if (cm_node) { |
|
event->private_data = cm_node->pdata_buf; |
|
event->private_data_len = (u8)cm_node->pdata.size; |
|
event->ird = cm_node->ird_size; |
|
event->ord = cm_node->ord_size; |
|
} |
|
} |
|
|
|
/** |
|
* irdma_send_cm_event - upcall cm's event handler |
|
* @cm_node: connection's node |
|
* @cm_id: upper layer's cm info struct |
|
* @type: Event type to indicate |
|
* @status: status for the event type |
|
*/ |
|
static int irdma_send_cm_event(struct irdma_cm_node *cm_node, |
|
struct iw_cm_id *cm_id, |
|
enum iw_cm_event_type type, int status) |
|
{ |
|
struct iw_cm_event event = {}; |
|
|
|
event.event = type; |
|
event.status = status; |
|
trace_irdma_send_cm_event(cm_node, cm_id, type, status, |
|
__builtin_return_address(0)); |
|
|
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: cm_node %p cm_id=%p state=%d accel=%d event_type=%d status=%d\n", |
|
cm_node, cm_id, cm_node->accelerated, cm_node->state, type, |
|
status); |
|
|
|
switch (type) { |
|
case IW_CM_EVENT_CONNECT_REQUEST: |
|
if (cm_node->ipv4) |
|
irdma_fill_sockaddr4(cm_node, &event); |
|
else |
|
irdma_fill_sockaddr6(cm_node, &event); |
|
event.provider_data = cm_node; |
|
event.private_data = cm_node->pdata_buf; |
|
event.private_data_len = (u8)cm_node->pdata.size; |
|
event.ird = cm_node->ird_size; |
|
break; |
|
case IW_CM_EVENT_CONNECT_REPLY: |
|
irdma_get_cmevent_info(cm_node, cm_id, &event); |
|
break; |
|
case IW_CM_EVENT_ESTABLISHED: |
|
event.ird = cm_node->ird_size; |
|
event.ord = cm_node->ord_size; |
|
break; |
|
case IW_CM_EVENT_DISCONNECT: |
|
case IW_CM_EVENT_CLOSE: |
|
/* Wait if we are in RTS but havent issued the iwcm event upcall */ |
|
if (!cm_node->accelerated) |
|
wait_for_completion(&cm_node->establish_comp); |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
return cm_id->event_handler(cm_id, &event); |
|
} |
|
|
|
/** |
|
* irdma_timer_list_prep - add connection nodes to a list to perform timer tasks |
|
* @cm_core: cm's core |
|
* @timer_list: a timer list to which cm_node will be selected |
|
*/ |
|
static void irdma_timer_list_prep(struct irdma_cm_core *cm_core, |
|
struct list_head *timer_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->close_entry || cm_node->send_entry) && |
|
refcount_inc_not_zero(&cm_node->refcnt)) |
|
list_add(&cm_node->timer_entry, timer_list); |
|
} |
|
} |
|
|
|
/** |
|
* irdma_create_event - create cm event |
|
* @cm_node: connection's node |
|
* @type: Event type to generate |
|
*/ |
|
static struct irdma_cm_event *irdma_create_event(struct irdma_cm_node *cm_node, |
|
enum irdma_cm_event_type type) |
|
{ |
|
struct irdma_cm_event *event; |
|
|
|
if (!cm_node->cm_id) |
|
return NULL; |
|
|
|
event = kzalloc(sizeof(*event), GFP_ATOMIC); |
|
|
|
if (!event) |
|
return NULL; |
|
|
|
event->type = type; |
|
event->cm_node = cm_node; |
|
memcpy(event->cm_info.rem_addr, cm_node->rem_addr, |
|
sizeof(event->cm_info.rem_addr)); |
|
memcpy(event->cm_info.loc_addr, cm_node->loc_addr, |
|
sizeof(event->cm_info.loc_addr)); |
|
event->cm_info.rem_port = cm_node->rem_port; |
|
event->cm_info.loc_port = cm_node->loc_port; |
|
event->cm_info.cm_id = cm_node->cm_id; |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: node=%p event=%p type=%u dst=%pI4 src=%pI4\n", cm_node, |
|
event, type, event->cm_info.loc_addr, |
|
event->cm_info.rem_addr); |
|
trace_irdma_create_event(cm_node, type, __builtin_return_address(0)); |
|
irdma_cm_post_event(event); |
|
|
|
return event; |
|
} |
|
|
|
/** |
|
* irdma_free_retrans_entry - free send entry |
|
* @cm_node: connection's node |
|
*/ |
|
static void irdma_free_retrans_entry(struct irdma_cm_node *cm_node) |
|
{ |
|
struct irdma_device *iwdev = cm_node->iwdev; |
|
struct irdma_timer_entry *send_entry; |
|
|
|
send_entry = cm_node->send_entry; |
|
if (!send_entry) |
|
return; |
|
|
|
cm_node->send_entry = NULL; |
|
irdma_free_sqbuf(&iwdev->vsi, send_entry->sqbuf); |
|
kfree(send_entry); |
|
refcount_dec(&cm_node->refcnt); |
|
} |
|
|
|
/** |
|
* irdma_cleanup_retrans_entry - free send entry with lock |
|
* @cm_node: connection's node |
|
*/ |
|
static void irdma_cleanup_retrans_entry(struct irdma_cm_node *cm_node) |
|
{ |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
|
irdma_free_retrans_entry(cm_node); |
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
|
} |
|
|
|
/** |
|
* irdma_form_ah_cm_frame - get a free packet and build frame with address handle |
|
* @cm_node: connection's node ionfo to use in frame |
|
* @options: pointer to options info |
|
* @hdr: pointer mpa header |
|
* @pdata: pointer to private data |
|
* @flags: indicates FIN or ACK |
|
*/ |
|
static struct irdma_puda_buf *irdma_form_ah_cm_frame(struct irdma_cm_node *cm_node, |
|
struct irdma_kmem_info *options, |
|
struct irdma_kmem_info *hdr, |
|
struct irdma_mpa_priv_info *pdata, |
|
u8 flags) |
|
{ |
|
struct irdma_puda_buf *sqbuf; |
|
struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi; |
|
u8 *buf; |
|
struct tcphdr *tcph; |
|
u16 pktsize; |
|
u32 opts_len = 0; |
|
u32 pd_len = 0; |
|
u32 hdr_len = 0; |
|
|
|
if (!cm_node->ah || !cm_node->ah->ah_info.ah_valid) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, "CM: AH invalid\n"); |
|
return NULL; |
|
} |
|
|
|
sqbuf = irdma_puda_get_bufpool(vsi->ilq); |
|
if (!sqbuf) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, "CM: SQ buf NULL\n"); |
|
return NULL; |
|
} |
|
|
|
sqbuf->ah_id = cm_node->ah->ah_info.ah_idx; |
|
buf = sqbuf->mem.va; |
|
if (options) |
|
opts_len = (u32)options->size; |
|
|
|
if (hdr) |
|
hdr_len = hdr->size; |
|
|
|
if (pdata) |
|
pd_len = pdata->size; |
|
|
|
pktsize = sizeof(*tcph) + opts_len + hdr_len + pd_len; |
|
|
|
memset(buf, 0, pktsize); |
|
|
|
sqbuf->totallen = pktsize; |
|
sqbuf->tcphlen = sizeof(*tcph) + opts_len; |
|
sqbuf->scratch = cm_node; |
|
|
|
tcph = (struct tcphdr *)buf; |
|
buf += sizeof(*tcph); |
|
|
|
tcph->source = htons(cm_node->loc_port); |
|
tcph->dest = htons(cm_node->rem_port); |
|
tcph->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->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num); |
|
tcph->ack = 1; |
|
} else { |
|
tcph->ack_seq = 0; |
|
} |
|
|
|
if (flags & SET_SYN) { |
|
cm_node->tcp_cntxt.loc_seq_num++; |
|
tcph->syn = 1; |
|
} else { |
|
cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len; |
|
} |
|
|
|
if (flags & SET_FIN) { |
|
cm_node->tcp_cntxt.loc_seq_num++; |
|
tcph->fin = 1; |
|
} |
|
|
|
if (flags & SET_RST) |
|
tcph->rst = 1; |
|
|
|
tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2); |
|
sqbuf->tcphlen = tcph->doff << 2; |
|
tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd); |
|
tcph->urg_ptr = 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); |
|
|
|
refcount_set(&sqbuf->refcount, 1); |
|
|
|
print_hex_dump_debug("ILQ: TRANSMIT ILQ BUFFER", DUMP_PREFIX_OFFSET, |
|
16, 8, sqbuf->mem.va, sqbuf->totallen, false); |
|
|
|
return sqbuf; |
|
} |
|
|
|
/** |
|
* irdma_form_uda_cm_frame - get a free packet and build frame full tcpip packet |
|
* @cm_node: connection's node ionfo to use in frame |
|
* @options: pointer to options info |
|
* @hdr: pointer mpa header |
|
* @pdata: pointer to private data |
|
* @flags: indicates FIN or ACK |
|
*/ |
|
static struct irdma_puda_buf *irdma_form_uda_cm_frame(struct irdma_cm_node *cm_node, |
|
struct irdma_kmem_info *options, |
|
struct irdma_kmem_info *hdr, |
|
struct irdma_mpa_priv_info *pdata, |
|
u8 flags) |
|
{ |
|
struct irdma_puda_buf *sqbuf; |
|
struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi; |
|
u8 *buf; |
|
|
|
struct tcphdr *tcph; |
|
struct iphdr *iph; |
|
struct ipv6hdr *ip6h; |
|
struct ethhdr *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 ethhdr *)buf; |
|
buf += eth_hlen; |
|
|
|
if (cm_node->do_lpb) |
|
sqbuf->do_lpb = true; |
|
|
|
if (cm_node->ipv4) { |
|
sqbuf->ipv4 = true; |
|
|
|
iph = (struct iphdr *)buf; |
|
buf += sizeof(*iph); |
|
tcph = (struct tcphdr *)buf; |
|
buf += sizeof(*tcph); |
|
|
|
ether_addr_copy(ethh->h_dest, cm_node->rem_mac); |
|
ether_addr_copy(ethh->h_source, cm_node->loc_mac); |
|
if (cm_node->vlan_id < VLAN_N_VID) { |
|
((struct vlan_ethhdr *)ethh)->h_vlan_proto = |
|
htons(ETH_P_8021Q); |
|
vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) | |
|
cm_node->vlan_id; |
|
((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag); |
|
|
|
((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto = |
|
htons(ETH_P_IP); |
|
} else { |
|
ethh->h_proto = htons(ETH_P_IP); |
|
} |
|
|
|
iph->version = IPVERSION; |
|
iph->ihl = 5; /* 5 * 4Byte words, IP headr len */ |
|
iph->tos = cm_node->tos; |
|
iph->tot_len = htons(pktsize); |
|
iph->id = htons(++cm_node->tcp_cntxt.loc_id); |
|
|
|
iph->frag_off = htons(0x4000); |
|
iph->ttl = 0x40; |
|
iph->protocol = IPPROTO_TCP; |
|
iph->saddr = htonl(cm_node->loc_addr[0]); |
|
iph->daddr = htonl(cm_node->rem_addr[0]); |
|
} else { |
|
sqbuf->ipv4 = false; |
|
ip6h = (struct ipv6hdr *)buf; |
|
buf += sizeof(*ip6h); |
|
tcph = (struct tcphdr *)buf; |
|
buf += sizeof(*tcph); |
|
|
|
ether_addr_copy(ethh->h_dest, cm_node->rem_mac); |
|
ether_addr_copy(ethh->h_source, cm_node->loc_mac); |
|
if (cm_node->vlan_id < VLAN_N_VID) { |
|
((struct vlan_ethhdr *)ethh)->h_vlan_proto = |
|
htons(ETH_P_8021Q); |
|
vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) | |
|
cm_node->vlan_id; |
|
((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag); |
|
((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto = |
|
htons(ETH_P_IPV6); |
|
} else { |
|
ethh->h_proto = htons(ETH_P_IPV6); |
|
} |
|
ip6h->version = 6; |
|
ip6h->priority = cm_node->tos >> 4; |
|
ip6h->flow_lbl[0] = cm_node->tos << 4; |
|
ip6h->flow_lbl[1] = 0; |
|
ip6h->flow_lbl[2] = 0; |
|
ip6h->payload_len = htons(pktsize - sizeof(*ip6h)); |
|
ip6h->nexthdr = 6; |
|
ip6h->hop_limit = 128; |
|
irdma_copy_ip_htonl(ip6h->saddr.in6_u.u6_addr32, |
|
cm_node->loc_addr); |
|
irdma_copy_ip_htonl(ip6h->daddr.in6_u.u6_addr32, |
|
cm_node->rem_addr); |
|
} |
|
|
|
tcph->source = htons(cm_node->loc_port); |
|
tcph->dest = htons(cm_node->rem_port); |
|
tcph->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->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num); |
|
tcph->ack = 1; |
|
} else { |
|
tcph->ack_seq = 0; |
|
} |
|
|
|
if (flags & SET_SYN) { |
|
cm_node->tcp_cntxt.loc_seq_num++; |
|
tcph->syn = 1; |
|
} else { |
|
cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len; |
|
} |
|
|
|
if (flags & SET_FIN) { |
|
cm_node->tcp_cntxt.loc_seq_num++; |
|
tcph->fin = 1; |
|
} |
|
|
|
if (flags & SET_RST) |
|
tcph->rst = 1; |
|
|
|
tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2); |
|
sqbuf->tcphlen = tcph->doff << 2; |
|
tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd); |
|
tcph->urg_ptr = 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); |
|
|
|
refcount_set(&sqbuf->refcount, 1); |
|
|
|
print_hex_dump_debug("ILQ: TRANSMIT ILQ BUFFER", DUMP_PREFIX_OFFSET, |
|
16, 8, sqbuf->mem.va, sqbuf->totallen, false); |
|
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; |
|
|
|
trace_irdma_send_reset(cm_node, 0, __builtin_return_address(0)); |
|
sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL, |
|
flags); |
|
if (!sqbuf) |
|
return -ENOMEM; |
|
|
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: caller: %pS cm_node %p cm_id=%p accel=%d state=%d rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4\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, cm_node->loc_addr); |
|
|
|
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) |
|
{ |
|
trace_irdma_active_open_err(cm_node, reset, |
|
__builtin_return_address(0)); |
|
irdma_cleanup_retrans_entry(cm_node); |
|
cm_node->cm_core->stats_connect_errs++; |
|
if (reset) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: cm_node=%p state=%d\n", cm_node, |
|
cm_node->state); |
|
refcount_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; |
|
ibdev_dbg(&cm_node->iwdev->ibdev, "CM: cm_node=%p state =%d\n", |
|
cm_node, cm_node->state); |
|
trace_irdma_passive_open_err(cm_node, reset, |
|
__builtin_return_address(0)); |
|
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: |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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: |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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->syn); |
|
if (ret) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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->window) |
|
<< 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) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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_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; |
|
|
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: MPAV2 Negotiated ORD: %d, IRD: %d\n", |
|
cm_node->ord_size, cm_node->ird_size); |
|
trace_irdma_negotiate_mpa_v2(cm_node); |
|
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)) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: unsupported mpa rev = %d\n", mpa_frame->rev); |
|
return -EINVAL; |
|
} |
|
|
|
if (mpa_frame->rev > cm_node->mpa_frame_rev) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, "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)) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: Unexpected MPA Key received\n"); |
|
return -EINVAL; |
|
} |
|
} else { |
|
if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, |
|
IETF_MPA_KEY_SIZE)) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: Unexpected MPA Key received\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (priv_data_len + mpa_hdr_len > len) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: ietf buffer len(%x + %x != %x)\n", |
|
priv_data_len, mpa_hdr_len, len); |
|
return -EOVERFLOW; |
|
} |
|
|
|
if (len > IRDMA_MAX_CM_BUF) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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(...) |
|
* refcount_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); |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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; |
|
refcount_inc(&cm_node->refcnt); |
|
spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
|
new_send->timetosend = jiffies + IRDMA_RETRY_TIMEOUT; |
|
|
|
refcount_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: |
|
refcount_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) { |
|
refcount_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 |
|
* @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, 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; |
|
/* compare node pair, return node handle if a match */ |
|
if ((!memcmp(listen_addr, dst_addr, sizeof(listen_addr)) || |
|
!memcmp(listen_addr, ip_zero, sizeof(listen_addr))) && |
|
listen_port == dst_port && |
|
vlan_id == listen_node->vlan_id && |
|
(listener_state & listen_node->listener_state)) { |
|
refcount_inc(&listen_node->refcnt); |
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, |
|
flags); |
|
trace_irdma_find_listener(listen_node); |
|
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 enum irdma_status_code |
|
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; |
|
enum irdma_status_code ret = IRDMA_ERR_CFG; |
|
struct list_head *pos, *tpos; |
|
unsigned long flags; |
|
|
|
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) |
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: removing child listen for IP=%pI4, port=%d, vlan=%d\n", |
|
child_listen_node->loc_addr, |
|
child_listen_node->loc_port, |
|
child_listen_node->vlan_id); |
|
else |
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: removing child listen for IP=%pI6, port=%d, vlan=%d\n", |
|
child_listen_node->loc_addr, |
|
child_listen_node->loc_port, |
|
child_listen_node->vlan_id); |
|
trace_irdma_del_multiple_qhash(child_listen_node); |
|
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; |
|
} |
|
ibdev_dbg(&iwdev->ibdev, |
|
"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; |
|
} |
|
|
|
/** |
|
* 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. |
|
*/ |
|
struct net_device *irdma_netdev_vlan_ipv6(u32 *addr, u16 *vlan_id, u8 *mac) |
|
{ |
|
struct net_device *ip_dev = NULL; |
|
struct in6_addr laddr6; |
|
|
|
if (!IS_ENABLED(CONFIG_IPV6)) |
|
return NULL; |
|
|
|
irdma_copy_ip_htonl(laddr6.in6_u.u6_addr32, addr); |
|
if (vlan_id) |
|
*vlan_id = 0xFFFF; /* Match rdma_vlan_dev_vlan_id() */ |
|
if (mac) |
|
eth_zero_addr(mac); |
|
|
|
rcu_read_lock(); |
|
for_each_netdev_rcu (&init_net, ip_dev) { |
|
if (ipv6_chk_addr(&init_net, &laddr6, ip_dev, 1)) { |
|
if (vlan_id) |
|
*vlan_id = rdma_vlan_dev_vlan_id(ip_dev); |
|
if (ip_dev->dev_addr && mac) |
|
ether_addr_copy(mac, ip_dev->dev_addr); |
|
break; |
|
} |
|
} |
|
rcu_read_unlock(); |
|
|
|
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) |
|
{ |
|
struct net_device *netdev; |
|
u16 vlan_id = 0xFFFF; |
|
|
|
netdev = ip_dev_find(&init_net, htonl(addr[0])); |
|
if (netdev) { |
|
vlan_id = rdma_vlan_dev_vlan_id(netdev); |
|
dev_put(netdev); |
|
} |
|
|
|
return vlan_id; |
|
} |
|
|
|
/** |
|
* irdma_add_mqh_6 - Adds multiple qhashes for IPv6 |
|
* @iwdev: iWarp device |
|
* @cm_info: CM info for parent listen node |
|
* @cm_parent_listen_node: The parent listen node |
|
* |
|
* Adds a qhash and a child listen node for every IPv6 address |
|
* on the adapter and adds the associated qhash filter |
|
*/ |
|
static enum irdma_status_code |
|
irdma_add_mqh_6(struct irdma_device *iwdev, struct irdma_cm_info *cm_info, |
|
struct irdma_cm_listener *cm_parent_listen_node) |
|
{ |
|
struct net_device *ip_dev; |
|
struct inet6_dev *idev; |
|
struct inet6_ifaddr *ifp, *tmp; |
|
enum irdma_status_code ret = 0; |
|
struct irdma_cm_listener *child_listen_node; |
|
unsigned long flags; |
|
|
|
rtnl_lock(); |
|
for_each_netdev(&init_net, ip_dev) { |
|
if (!(ip_dev->flags & IFF_UP)) |
|
continue; |
|
|
|
if (((rdma_vlan_dev_vlan_id(ip_dev) >= VLAN_N_VID) || |
|
(rdma_vlan_dev_real_dev(ip_dev) != iwdev->netdev)) && |
|
ip_dev != iwdev->netdev) |
|
continue; |
|
|
|
idev = __in6_dev_get(ip_dev); |
|
if (!idev) { |
|
ibdev_dbg(&iwdev->ibdev, "CM: idev == NULL\n"); |
|
break; |
|
} |
|
list_for_each_entry_safe (ifp, tmp, &idev->addr_list, if_list) { |
|
ibdev_dbg(&iwdev->ibdev, "CM: IP=%pI6, vlan_id=%d, MAC=%pM\n", |
|
&ifp->addr, rdma_vlan_dev_vlan_id(ip_dev), |
|
ip_dev->dev_addr); |
|
child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_KERNEL); |
|
ibdev_dbg(&iwdev->ibdev, "CM: Allocating child listener %p\n", |
|
child_listen_node); |
|
if (!child_listen_node) { |
|
ibdev_dbg(&iwdev->ibdev, "CM: listener memory allocation\n"); |
|
ret = IRDMA_ERR_NO_MEMORY; |
|
goto exit; |
|
} |
|
|
|
cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev); |
|
cm_parent_listen_node->vlan_id = cm_info->vlan_id; |
|
memcpy(child_listen_node, cm_parent_listen_node, |
|
sizeof(*child_listen_node)); |
|
irdma_copy_ip_ntohl(child_listen_node->loc_addr, |
|
ifp->addr.in6_u.u6_addr32); |
|
memcpy(cm_info->loc_addr, child_listen_node->loc_addr, |
|
sizeof(cm_info->loc_addr)); |
|
ret = irdma_manage_qhash(iwdev, cm_info, |
|
IRDMA_QHASH_TYPE_TCP_SYN, |
|
IRDMA_QHASH_MANAGE_TYPE_ADD, |
|
NULL, true); |
|
if (ret) { |
|
kfree(child_listen_node); |
|
continue; |
|
} |
|
|
|
trace_irdma_add_mqh_6(iwdev, child_listen_node, |
|
ip_dev->dev_addr); |
|
|
|
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++; |
|
} |
|
} |
|
exit: |
|
rtnl_unlock(); |
|
|
|
return ret; |
|
} |
|
|
|
/** |
|
* irdma_add_mqh_4 - Adds multiple qhashes for IPv4 |
|
* @iwdev: iWarp device |
|
* @cm_info: CM info for parent listen node |
|
* @cm_parent_listen_node: The parent listen node |
|
* |
|
* Adds a qhash and a child listen node for every IPv4 address |
|
* on the adapter and adds the associated qhash filter |
|
*/ |
|
static enum irdma_status_code |
|
irdma_add_mqh_4(struct irdma_device *iwdev, struct irdma_cm_info *cm_info, |
|
struct irdma_cm_listener *cm_parent_listen_node) |
|
{ |
|
struct net_device *ip_dev; |
|
struct in_device *idev; |
|
struct irdma_cm_listener *child_listen_node; |
|
enum irdma_status_code ret = 0; |
|
unsigned long flags; |
|
const struct in_ifaddr *ifa; |
|
|
|
rtnl_lock(); |
|
for_each_netdev(&init_net, ip_dev) { |
|
if (!(ip_dev->flags & IFF_UP)) |
|
continue; |
|
|
|
if (((rdma_vlan_dev_vlan_id(ip_dev) >= VLAN_N_VID) || |
|
(rdma_vlan_dev_real_dev(ip_dev) != iwdev->netdev)) && |
|
ip_dev != iwdev->netdev) |
|
continue; |
|
|
|
idev = in_dev_get(ip_dev); |
|
in_dev_for_each_ifa_rtnl(ifa, idev) { |
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: Allocating child CM Listener forIP=%pI4, vlan_id=%d, MAC=%pM\n", |
|
&ifa->ifa_address, rdma_vlan_dev_vlan_id(ip_dev), |
|
ip_dev->dev_addr); |
|
child_listen_node = kzalloc(sizeof(*child_listen_node), GFP_KERNEL); |
|
cm_parent_listen_node->cm_core->stats_listen_nodes_created++; |
|
ibdev_dbg(&iwdev->ibdev, "CM: Allocating child listener %p\n", |
|
child_listen_node); |
|
if (!child_listen_node) { |
|
ibdev_dbg(&iwdev->ibdev, "CM: listener memory allocation\n"); |
|
in_dev_put(idev); |
|
ret = IRDMA_ERR_NO_MEMORY; |
|
goto exit; |
|
} |
|
|
|
cm_info->vlan_id = rdma_vlan_dev_vlan_id(ip_dev); |
|
cm_parent_listen_node->vlan_id = cm_info->vlan_id; |
|
memcpy(child_listen_node, cm_parent_listen_node, |
|
sizeof(*child_listen_node)); |
|
child_listen_node->loc_addr[0] = |
|
ntohl(ifa->ifa_address); |
|
memcpy(cm_info->loc_addr, child_listen_node->loc_addr, |
|
sizeof(cm_info->loc_addr)); |
|
ret = irdma_manage_qhash(iwdev, cm_info, |
|
IRDMA_QHASH_TYPE_TCP_SYN, |
|
IRDMA_QHASH_MANAGE_TYPE_ADD, |
|
NULL, true); |
|
if (ret) { |
|
kfree(child_listen_node); |
|
cm_parent_listen_node->cm_core |
|
->stats_listen_nodes_created--; |
|
continue; |
|
} |
|
|
|
trace_irdma_add_mqh_4(iwdev, child_listen_node, |
|
ip_dev->dev_addr); |
|
|
|
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); |
|
} |
|
in_dev_put(idev); |
|
} |
|
exit: |
|
rtnl_unlock(); |
|
|
|
return ret; |
|
} |
|
|
|
/** |
|
* 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 enum irdma_status_code |
|
irdma_add_mqh(struct irdma_device *iwdev, struct irdma_cm_info *cm_info, |
|
struct irdma_cm_listener *cm_listen_node) |
|
{ |
|
if (cm_info->ipv4) |
|
return irdma_add_mqh_4(iwdev, cm_info, cm_listen_node); |
|
else |
|
return irdma_add_mqh_6(iwdev, cm_info, cm_listen_node); |
|
} |
|
|
|
/** |
|
* 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 && |
|
refcount_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) |
|
{ |
|
int err; |
|
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; |
|
|
|
trace_irdma_dec_refcnt_listen(listener, __builtin_return_address(0)); |
|
/* 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; |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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 (refcount_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++; |
|
ibdev_dbg(&listener->iwdev->ibdev, |
|
"CM: loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d apbvt_del=%d\n", |
|
listener->loc_port, listener->loc_addr, 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_addr_resolve_neigh - resolve neighbor address |
|
* @iwdev: iwarp device structure |
|
* @src_ip: local ip address |
|
* @dst_ip: remote ip address |
|
* @arpindex: if there is an arp entry |
|
*/ |
|
static int irdma_addr_resolve_neigh(struct irdma_device *iwdev, u32 src_ip, |
|
u32 dst_ip, int arpindex) |
|
{ |
|
struct rtable *rt; |
|
struct neighbour *neigh; |
|
int rc = arpindex; |
|
__be32 dst_ipaddr = htonl(dst_ip); |
|
__be32 src_ipaddr = htonl(src_ip); |
|
|
|
rt = ip_route_output(&init_net, dst_ipaddr, src_ipaddr, 0, 0); |
|
if (IS_ERR(rt)) { |
|
ibdev_dbg(&iwdev->ibdev, "CM: ip_route_output fail\n"); |
|
return -EINVAL; |
|
} |
|
|
|
neigh = dst_neigh_lookup(&rt->dst, &dst_ipaddr); |
|
if (!neigh) |
|
goto exit; |
|
|
|
if (neigh->nud_state & NUD_VALID) |
|
rc = irdma_add_arp(iwdev->rf, &dst_ip, true, neigh->ha); |
|
else |
|
neigh_event_send(neigh, NULL); |
|
if (neigh) |
|
neigh_release(neigh); |
|
exit: |
|
ip_rt_put(rt); |
|
|
|
return rc; |
|
} |
|
|
|
/** |
|
* irdma_get_dst_ipv6 - get destination cache entry via ipv6 lookup |
|
* @src_addr: local ipv6 sock address |
|
* @dst_addr: destination ipv6 sock address |
|
*/ |
|
static struct dst_entry *irdma_get_dst_ipv6(struct sockaddr_in6 *src_addr, |
|
struct sockaddr_in6 *dst_addr) |
|
{ |
|
struct dst_entry *dst = NULL; |
|
|
|
if ((IS_ENABLED(CONFIG_IPV6))) { |
|
struct flowi6 fl6 = {}; |
|
|
|
fl6.daddr = dst_addr->sin6_addr; |
|
fl6.saddr = src_addr->sin6_addr; |
|
if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL) |
|
fl6.flowi6_oif = dst_addr->sin6_scope_id; |
|
|
|
dst = ip6_route_output(&init_net, NULL, &fl6); |
|
} |
|
|
|
return dst; |
|
} |
|
|
|
/** |
|
* irdma_addr_resolve_neigh_ipv6 - resolve neighbor ipv6 address |
|
* @iwdev: iwarp device structure |
|
* @src: local ip address |
|
* @dest: remote ip address |
|
* @arpindex: if there is an arp entry |
|
*/ |
|
static int irdma_addr_resolve_neigh_ipv6(struct irdma_device *iwdev, u32 *src, |
|
u32 *dest, int arpindex) |
|
{ |
|
struct neighbour *neigh; |
|
int rc = arpindex; |
|
struct dst_entry *dst; |
|
struct sockaddr_in6 dst_addr = {}; |
|
struct sockaddr_in6 src_addr = {}; |
|
|
|
dst_addr.sin6_family = AF_INET6; |
|
irdma_copy_ip_htonl(dst_addr.sin6_addr.in6_u.u6_addr32, dest); |
|
src_addr.sin6_family = AF_INET6; |
|
irdma_copy_ip_htonl(src_addr.sin6_addr.in6_u.u6_addr32, src); |
|
dst = irdma_get_dst_ipv6(&src_addr, &dst_addr); |
|
if (!dst || dst->error) { |
|
if (dst) { |
|
dst_release(dst); |
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: ip6_route_output returned dst->error = %d\n", |
|
dst->error); |
|
} |
|
return -EINVAL; |
|
} |
|
|
|
neigh = dst_neigh_lookup(dst, dst_addr.sin6_addr.in6_u.u6_addr32); |
|
if (!neigh) |
|
goto exit; |
|
|
|
ibdev_dbg(&iwdev->ibdev, "CM: dst_neigh_lookup MAC=%pM\n", |
|
neigh->ha); |
|
|
|
trace_irdma_addr_resolve(iwdev, neigh->ha); |
|
|
|
if (neigh->nud_state & NUD_VALID) |
|
rc = irdma_add_arp(iwdev->rf, dest, false, neigh->ha); |
|
else |
|
neigh_event_send(neigh, NULL); |
|
if (neigh) |
|
neigh_release(neigh); |
|
exit: |
|
dst_release(dst); |
|
|
|
return rc; |
|
} |
|
|
|
/** |
|
* 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 (!refcount_inc_not_zero(&cm_node->refcnt)) |
|
goto exit; |
|
rcu_read_unlock(); |
|
trace_irdma_find_node(cm_node, 0, NULL); |
|
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.in6_u.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 = {}; |
|
struct irdma_device *iwdev = cm_node->iwdev; |
|
|
|
ether_addr_copy(ah_info.mac_addr, iwdev->netdev->dev_addr); |
|
|
|
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]; |
|
ah_info.do_lpbk = irdma_ipv4_is_lpb(ah_info.src_ip_addr[0], |
|
ah_info.dest_ip_addr[0]); |
|
} 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, |
|
ah_info.ipv4_valid, 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; |
|
|
|
trace_irdma_create_ah(cm_node); |
|
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; |
|
|
|
trace_irdma_cm_free_ah(cm_node); |
|
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 oldarpindex; |
|
int arpindex; |
|
struct net_device *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) |
|
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) |
|
ibdev_warn(&iwdev->ibdev, |
|
"application TOS[%d] and remote client TOS[%d] mismatch\n", |
|
listener->tos, cm_info->tos); |
|
cm_node->tos = max(listener->tos, cm_info->tos); |
|
cm_node->user_pri = rt_tos2priority(cm_node->tos); |
|
ibdev_dbg(&iwdev->ibdev, |
|
"DCB: listener: TOS:[%d] UP:[%d]\n", cm_node->tos, |
|
cm_node->user_pri); |
|
trace_irdma_listener_tos(iwdev, 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, netdev->dev_addr); |
|
spin_lock_init(&cm_node->retrans_list_lock); |
|
cm_node->ack_rcvd = false; |
|
|
|
init_completion(&cm_node->establish_comp); |
|
refcount_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; |
|
if (cm_node->ipv4) { |
|
cm_node->tcp_cntxt.loc_seq_num = secure_tcp_seq(htonl(cm_node->loc_addr[0]), |
|
htonl(cm_node->rem_addr[0]), |
|
htons(cm_node->loc_port), |
|
htons(cm_node->rem_port)); |
|
cm_node->tcp_cntxt.mss = iwdev->vsi.mtu - IRDMA_MTU_TO_MSS_IPV4; |
|
} else if (IS_ENABLED(CONFIG_IPV6)) { |
|
__be32 loc[4] = { |
|
htonl(cm_node->loc_addr[0]), htonl(cm_node->loc_addr[1]), |
|
htonl(cm_node->loc_addr[2]), htonl(cm_node->loc_addr[3]) |
|
}; |
|
__be32 rem[4] = { |
|
htonl(cm_node->rem_addr[0]), htonl(cm_node->rem_addr[1]), |
|
htonl(cm_node->rem_addr[2]), htonl(cm_node->rem_addr[3]) |
|
}; |
|
cm_node->tcp_cntxt.loc_seq_num = secure_tcpv6_seq(loc, rem, |
|
htons(cm_node->loc_port), |
|
htons(cm_node->rem_port)); |
|
cm_node->tcp_cntxt.mss = iwdev->vsi.mtu - IRDMA_MTU_TO_MSS_IPV6; |
|
} |
|
|
|
if ((cm_node->ipv4 && |
|
irdma_ipv4_is_lpb(cm_node->loc_addr[0], cm_node->rem_addr[0])) || |
|
(!cm_node->ipv4 && |
|
irdma_ipv6_is_lpb(cm_node->loc_addr, cm_node->rem_addr))) { |
|
cm_node->do_lpb = true; |
|
arpindex = irdma_arp_table(iwdev->rf, cm_node->rem_addr, |
|
cm_node->ipv4, NULL, |
|
IRDMA_ARP_RESOLVE); |
|
} else { |
|
oldarpindex = irdma_arp_table(iwdev->rf, cm_node->rem_addr, |
|
cm_node->ipv4, NULL, |
|
IRDMA_ARP_RESOLVE); |
|
if (cm_node->ipv4) |
|
arpindex = irdma_addr_resolve_neigh(iwdev, |
|
cm_info->loc_addr[0], |
|
cm_info->rem_addr[0], |
|
oldarpindex); |
|
else if (IS_ENABLED(CONFIG_IPV6)) |
|
arpindex = irdma_addr_resolve_neigh_ipv6(iwdev, |
|
cm_info->loc_addr, |
|
cm_info->rem_addr, |
|
oldarpindex); |
|
else |
|
arpindex = -EINVAL; |
|
} |
|
|
|
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_cm_node_free_cb(struct rcu_head *rcu_head) |
|
{ |
|
struct irdma_cm_node *cm_node = |
|
container_of(rcu_head, struct irdma_cm_node, rcu_head); |
|
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) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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); |
|
kfree(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; |
|
|
|
trace_irdma_rem_ref_cm_node(cm_node, 0, __builtin_return_address(0)); |
|
spin_lock_irqsave(&cm_core->ht_lock, flags); |
|
|
|
if (!refcount_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_node->list); |
|
cm_node->cm_core->stats_nodes_destroyed++; |
|
|
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags); |
|
|
|
/* wait for all list walkers to exit their grace period */ |
|
call_rcu(&cm_node->rcu_head, irdma_cm_node_free_cb); |
|
} |
|
|
|
/** |
|
* 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; |
|
refcount_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: |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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) |
|
{ |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: caller: %pS cm_node=%p state=%d rem_port=0x%04x loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4\n", |
|
__builtin_return_address(0), cm_node, cm_node->state, |
|
cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr, |
|
cm_node->loc_addr); |
|
|
|
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) |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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: |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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->ack_seq) != 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->seq); |
|
ack_seq = ntohl(tcph->ack_seq); |
|
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) |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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->doff << 2) - sizeof(struct tcphdr); |
|
inc_sequence = ntohl(tcph->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); |
|
refcount_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->doff << 2) - sizeof(struct tcphdr); |
|
inc_sequence = ntohl(tcph->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)) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"CM: check syn fail\n"); |
|
return; |
|
} |
|
cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
|
/* setup options */ |
|
err = irdma_handle_tcp_options(cm_node, tcph, optionsize, 0); |
|
if (err) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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) { |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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->ack_seq); |
|
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->ack_seq); |
|
irdma_cleanup_retrans_entry(cm_node); |
|
refcount_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->doff << 2) - sizeof(struct tcphdr); |
|
|
|
if (irdma_check_seq(cm_node, tcph)) |
|
return -EINVAL; |
|
|
|
inc_sequence = ntohl(tcph->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->ack_seq); |
|
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->ack_seq); |
|
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); |
|
refcount_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->rst) { |
|
pkt_type = IRDMA_PKT_TYPE_RST; |
|
} else if (tcph->syn) { |
|
pkt_type = IRDMA_PKT_TYPE_SYN; |
|
if (tcph->ack) |
|
pkt_type = IRDMA_PKT_TYPE_SYNACK; |
|
} else if (tcph->ack) { |
|
pkt_type = IRDMA_PKT_TYPE_ACK; |
|
} |
|
if (tcph->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->loc_port, cm_info->vlan_id, |
|
IRDMA_CM_LISTENER_EITHER_STATE); |
|
if (listener && |
|
listener->listener_state == IRDMA_CM_LISTENER_ACTIVE_STATE) { |
|
refcount_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); |
|
|
|
refcount_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)) |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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) |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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 iphdr *iph; |
|
struct ipv6hdr *ip6h; |
|
struct tcphdr *tcph; |
|
struct irdma_cm_info cm_info = {}; |
|
struct irdma_device *iwdev = vsi->back_vsi; |
|
struct irdma_cm_core *cm_core = &iwdev->cm_core; |
|
struct vlan_ethhdr *ethh; |
|
u16 vtag; |
|
|
|
/* if vlan, then maclen = 18 else 14 */ |
|
iph = (struct iphdr *)rbuf->iph; |
|
print_hex_dump_debug("ILQ: RECEIVE ILQ BUFFER", DUMP_PREFIX_OFFSET, |
|
16, 8, rbuf->mem.va, rbuf->totallen, false); |
|
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 & VLAN_PRIO_MASK) >> |
|
VLAN_PRIO_SHIFT; |
|
cm_info.vlan_id = vtag & VLAN_VID_MASK; |
|
} else { |
|
cm_info.vlan_id = 0xFFFF; |
|
} |
|
} else { |
|
ethh = rbuf->mem.va; |
|
|
|
if (ethh->h_vlan_proto == htons(ETH_P_8021Q)) { |
|
vtag = ntohs(ethh->h_vlan_TCI); |
|
cm_info.user_pri = (vtag & VLAN_PRIO_MASK) >> |
|
VLAN_PRIO_SHIFT; |
|
cm_info.vlan_id = vtag & VLAN_VID_MASK; |
|
ibdev_dbg(&cm_core->iwdev->ibdev, |
|
"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->daddr); |
|
cm_info.rem_addr[0] = ntohl(iph->saddr); |
|
cm_info.ipv4 = true; |
|
cm_info.tos = iph->tos; |
|
} else { |
|
ip6h = (struct ipv6hdr *)rbuf->iph; |
|
irdma_copy_ip_ntohl(cm_info.loc_addr, |
|
ip6h->daddr.in6_u.u6_addr32); |
|
irdma_copy_ip_ntohl(cm_info.rem_addr, |
|
ip6h->saddr.in6_u.u6_addr32); |
|
cm_info.ipv4 = false; |
|
cm_info.tos = (ip6h->priority << 4) | (ip6h->flow_lbl[0] >> 4); |
|
} |
|
cm_info.loc_port = ntohs(tcph->dest); |
|
cm_info.rem_port = ntohs(tcph->source); |
|
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->syn || tcph->ack) |
|
return; |
|
|
|
listener = irdma_find_listener(cm_core, |
|
cm_info.loc_addr, |
|
cm_info.loc_port, |
|
cm_info.vlan_id, |
|
IRDMA_CM_LISTENER_ACTIVE_STATE); |
|
if (!listener) { |
|
cm_info.cm_id = NULL; |
|
ibdev_dbg(&cm_core->iwdev->ibdev, |
|
"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) { |
|
ibdev_dbg(&cm_core->iwdev->ibdev, |
|
"CM: allocate node failed\n"); |
|
refcount_dec(&listener->refcnt); |
|
return; |
|
} |
|
|
|
if (!tcph->rst && !tcph->fin) { |
|
cm_node->state = IRDMA_CM_STATE_LISTENING; |
|
} else { |
|
irdma_rem_ref_cm_node(cm_node); |
|
return; |
|
} |
|
|
|
refcount_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 |
|
*/ |
|
enum irdma_status_code 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 IRDMA_ERR_NO_MEMORY; |
|
|
|
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) |
|
{ |
|
unsigned long flags; |
|
|
|
if (!cm_core) |
|
return; |
|
|
|
spin_lock_irqsave(&cm_core->ht_lock, flags); |
|
if (timer_pending(&cm_core->tcp_timer)) |
|
del_timer_sync(&cm_core->tcp_timer); |
|
spin_unlock_irqrestore(&cm_core->ht_lock, flags); |
|
|
|
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; |
|
} |
|
if (cm_node->ipv4) { |
|
tcp_info->src_port = cm_node->loc_port; |
|
tcp_info->dst_port = cm_node->rem_port; |
|
|
|
tcp_info->dest_ip_addr[3] = cm_node->rem_addr[0]; |
|
tcp_info->local_ipaddr[3] = cm_node->loc_addr[0]; |
|
tcp_info->arp_idx = (u16)irdma_arp_table(iwqp->iwdev->rf, |
|
&tcp_info->dest_ip_addr[3], |
|
true, NULL, |
|
IRDMA_ARP_RESOLVE); |
|
} else { |
|
tcp_info->src_port = cm_node->loc_port; |
|
tcp_info->dst_port = cm_node->rem_port; |
|
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)); |
|
|
|
tcp_info->arp_idx = (u16)irdma_arp_table(iwqp->iwdev->rf, |
|
&tcp_info->dest_ip_addr[0], |
|
false, NULL, |
|
IRDMA_ARP_RESOLVE); |
|
} |
|
} |
|
|
|
/** |
|
* 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); |
|
ibdev_dbg(&iwdev->ibdev, |
|
"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 */ |
|
ibdev_dbg(&iwdev->ibdev, "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; |
|
/* make sure we havent already closed this connection */ |
|
if (!cm_id) { |
|
spin_unlock_irqrestore(&iwqp->lock, flags); |
|
return; |
|
} |
|
|
|
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->reset)) { |
|
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; |
|
} |
|
refcount_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) |
|
ibdev_dbg(&iwdev->ibdev, |
|
"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) |
|
ibdev_dbg(&iwdev->ibdev, |
|
"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.ops.dereg_mr(iwqp->lsmm_mr, NULL); |
|
dma_free_coherent(iwdev->rf->sc_dev.hw->device, |
|
iwqp->ietf_mem.size, iwqp->ietf_mem.va, |
|
iwqp->ietf_mem.pa); |
|
iwqp->ietf_mem.va = NULL; |
|
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 = {}; |
|
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); |
|
} |
|
ibdev_dbg(&iwdev->ibdev, "CM: Accept vlan_id=%d\n", |
|
cm_node->vlan_id); |
|
|
|
trace_irdma_accept(cm_node, 0, NULL); |
|
|
|
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 = ALIGN(buf_len, 1); |
|
iwqp->ietf_mem.va = dma_alloc_coherent(dev->hw->device, |
|
iwqp->ietf_mem.size, |
|
&iwqp->ietf_mem.pa, GFP_KERNEL); |
|
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); |
|
/* 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) { |
|
ibdev_dbg(&iwdev->ibdev, |
|
"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; |
|
} |
|
|
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4 cm_node=%p cm_id=%p qp_id = %d\n\n", |
|
cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr, |
|
cm_node->loc_addr, 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; |
|
|
|
trace_irdma_reject(cm_node, 0, NULL); |
|
|
|
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.in6_u.u6_addr32); |
|
irdma_copy_ip_ntohl(cm_info.rem_addr, |
|
raddr6->sin6_addr.in6_u.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; |
|
cm_info.user_pri = rt_tos2priority(cm_id->tos); |
|
|
|
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); |
|
ibdev_dbg(&iwdev->ibdev, "DCB: TOS:[%d] UP:[%d]\n", cm_id->tos, |
|
cm_info.user_pri); |
|
|
|
trace_irdma_dcb_tos(iwdev, 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; |
|
} |
|
|
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4 cm_node=%p cm_id=%p qp_id = %d\n\n", |
|
cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr, |
|
cm_node->loc_addr, cm_node, cm_id, ibqp->qp_num); |
|
|
|
trace_irdma_connect(cm_node, 0, NULL); |
|
|
|
return 0; |
|
|
|
err: |
|
if (cm_info.ipv4) |
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: connect() FAILED: dest addr=%pI4", |
|
cm_info.rem_addr); |
|
else |
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: connect() FAILED: dest addr=%pI6", |
|
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 = {}; |
|
enum irdma_status_code err; |
|
struct sockaddr_in *laddr; |
|
struct sockaddr_in6 *laddr6; |
|
bool wildcard = false; |
|
|
|
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.in6_u.u6_addr32); |
|
cm_info.loc_port = ntohs(laddr6->sin6_port); |
|
if (ipv6_addr_type(&laddr6->sin6_addr) != IPV6_ADDR_ANY) { |
|
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) |
|
cm_info.vlan_id = 0; |
|
cm_info.backlog = backlog; |
|
cm_info.cm_id = cm_id; |
|
|
|
trace_irdma_create_listen(iwdev, &cm_info); |
|
|
|
cm_listen_node = irdma_make_listen_node(&iwdev->cm_core, iwdev, |
|
&cm_info); |
|
if (!cm_listen_node) { |
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: cm_listen_node == NULL\n"); |
|
return -ENOMEM; |
|
} |
|
|
|
cm_id->provider_data = cm_listen_node; |
|
|
|
cm_listen_node->tos = cm_id->tos; |
|
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 { |
|
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++; |
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d\n", |
|
cm_listen_node->loc_port, cm_listen_node->loc_addr, |
|
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 |
|
ibdev_dbg(&iwdev->ibdev, |
|
"CM: cm_id->provider_data was NULL\n"); |
|
|
|
cm_id->rem_ref(cm_id); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* irdma_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_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))) && |
|
refcount_inc_not_zero(&cm_node->refcnt)) |
|
list_add(&cm_node->teardown_entry, teardown_list); |
|
} |
|
} |
|
|
|
/** |
|
* 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 = {}; |
|
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) |
|
ibdev_dbg(&iwdev->ibdev, |
|
"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; |
|
|
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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; |
|
trace_irdma_cm_event_handler(cm_node, event->type, NULL); |
|
|
|
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: |
|
ibdev_dbg(&cm_node->iwdev->ibdev, |
|
"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) |
|
{ |
|
refcount_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 |
|
*/ |
|
void 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_sc_vsi *vsi = &iwdev->vsi; |
|
struct irdma_sc_qp *sc_qp; |
|
struct irdma_qp *qp; |
|
int i; |
|
|
|
INIT_LIST_HEAD(&teardown_list); |
|
|
|
rcu_read_lock(); |
|
irdma_teardown_list_prep(cm_core, &teardown_list, ipaddr, nfo, disconnect_all); |
|
rcu_read_unlock(); |
|
|
|
list_for_each_safe (list_node, list_core_temp, &teardown_list) { |
|
cm_node = container_of(list_node, struct irdma_cm_node, |
|
teardown_entry); |
|
attr.qp_state = IB_QPS_ERR; |
|
irdma_modify_qp(&cm_node->iwqp->ibqp, &attr, IB_QP_STATE, NULL); |
|
if (iwdev->reset) |
|
irdma_cm_disconn(cm_node->iwqp); |
|
irdma_rem_ref_cm_node(cm_node); |
|
} |
|
if (!iwdev->roce_mode) |
|
return; |
|
|
|
INIT_LIST_HEAD(&teardown_list); |
|
for (i = 0; i < IRDMA_MAX_USER_PRIORITY; i++) { |
|
mutex_lock(&vsi->qos[i].qos_mutex); |
|
list_for_each_safe (list_node, list_core_temp, |
|
&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 || |
|
(nfo->vlan_id == (qp->udp_info.vlan_tag & VLAN_VID_MASK) && |
|
!memcmp(qp_ip, ipaddr, nfo->ipv4 ? 4 : 16))) { |
|
spin_lock(&iwdev->rf->qptable_lock); |
|
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(&iwdev->rf->qptable_lock); |
|
} |
|
} |
|
mutex_unlock(&vsi->qos[i].qos_mutex); |
|
} |
|
|
|
list_for_each_safe (list_node, list_core_temp, &teardown_list) { |
|
qp = container_of(list_node, struct irdma_qp, teardown_entry); |
|
attr.qp_state = IB_QPS_ERR; |
|
irdma_modify_qp_roce(&qp->ibqp, &attr, IB_QP_STATE, NULL); |
|
irdma_qp_rem_ref(&qp->ibqp); |
|
} |
|
} |
|
|
|
/** |
|
* irdma_qhash_ctrl - enable/disable qhash for list |
|
* @iwdev: device pointer |
|
* @parent_listen_node: parent listen node |
|
* @nfo: cm info node |
|
* @ipaddr: Pointer to IPv4 or IPv6 address |
|
* @ipv4: flag indicating IPv4 when true |
|
* @ifup: flag indicating interface up when true |
|
* |
|
* Enables or disables the qhash for the node in the child |
|
* listen list that matches ipaddr. If no matching IP was found |
|
* it will allocate and add a new child listen node to the |
|
* parent listen node. The listen_list_lock is assumed to be |
|
* held when called. |
|
*/ |
|
static void irdma_qhash_ctrl(struct irdma_device *iwdev, |
|
struct irdma_cm_listener *parent_listen_node, |
|
struct irdma_cm_info *nfo, u32 *ipaddr, bool ipv4, |
|
bool ifup) |
|
{ |
|
struct list_head *child_listen_list = &parent_listen_node->child_listen_list; |
|
struct irdma_cm_listener *child_listen_node; |
|
struct list_head *pos, *tpos; |
|
enum irdma_status_code err; |
|
bool node_allocated = false; |
|
enum irdma_quad_hash_manage_type op = ifup ? |
|
IRDMA_QHASH_MANAGE_TYPE_ADD : |
|
IRDMA_QHASH_MANAGE_TYPE_DELETE; |
|
|
|
list_for_each_safe (pos, tpos, child_listen_list) { |
|
child_listen_node = list_entry(pos, struct irdma_cm_listener, |
|
child_listen_list); |
|
if (!memcmp(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16)) |
|
goto set_qhash; |
|
} |
|
|
|
/* if not found then add a child listener if interface is going up */ |
|
if (!ifup) |
|
return; |
|
child_listen_node = kmemdup(parent_listen_node, |
|
sizeof(*child_listen_node), GFP_ATOMIC); |
|
if (!child_listen_node) |
|
return; |
|
|
|
node_allocated = true; |
|
memcpy(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16); |
|
|
|
set_qhash: |
|
memcpy(nfo->loc_addr, child_listen_node->loc_addr, |
|
sizeof(nfo->loc_addr)); |
|
nfo->vlan_id = child_listen_node->vlan_id; |
|
err = irdma_manage_qhash(iwdev, nfo, IRDMA_QHASH_TYPE_TCP_SYN, op, NULL, |
|
false); |
|
if (!err) { |
|
child_listen_node->qhash_set = ifup; |
|
if (node_allocated) |
|
list_add(&child_listen_node->child_listen_list, |
|
&parent_listen_node->child_listen_list); |
|
} else if (node_allocated) { |
|
kfree(child_listen_node); |
|
} |
|
} |
|
|
|
/** |
|
* irdma_if_notify - process an ifdown on an interface |
|
* @iwdev: device pointer |
|
* @netdev: network device structure |
|
* @ipaddr: Pointer to IPv4 or IPv6 address |
|
* @ipv4: flag indicating IPv4 when true |
|
* @ifup: flag indicating interface up when true |
|
*/ |
|
void irdma_if_notify(struct irdma_device *iwdev, struct net_device *netdev, |
|
u32 *ipaddr, bool ipv4, bool ifup) |
|
{ |
|
struct irdma_cm_core *cm_core = &iwdev->cm_core; |
|
unsigned long flags; |
|
struct irdma_cm_listener *listen_node; |
|
static const u32 ip_zero[4] = { 0, 0, 0, 0 }; |
|
struct irdma_cm_info nfo = {}; |
|
u16 vlan_id = rdma_vlan_dev_vlan_id(netdev); |
|
enum irdma_quad_hash_manage_type op = ifup ? |
|
IRDMA_QHASH_MANAGE_TYPE_ADD : |
|
IRDMA_QHASH_MANAGE_TYPE_DELETE; |
|
|
|
nfo.vlan_id = vlan_id; |
|
nfo.ipv4 = ipv4; |
|
nfo.qh_qpid = 1; |
|
|
|
/* Disable or enable qhash for listeners */ |
|
spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
|
list_for_each_entry (listen_node, &cm_core->listen_list, list) { |
|
if (vlan_id != listen_node->vlan_id || |
|
(memcmp(listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16) && |
|
memcmp(listen_node->loc_addr, ip_zero, ipv4 ? 4 : 16))) |
|
continue; |
|
|
|
memcpy(nfo.loc_addr, listen_node->loc_addr, |
|
sizeof(nfo.loc_addr)); |
|
nfo.loc_port = listen_node->loc_port; |
|
nfo.user_pri = listen_node->user_pri; |
|
if (!list_empty(&listen_node->child_listen_list)) { |
|
irdma_qhash_ctrl(iwdev, listen_node, &nfo, ipaddr, ipv4, |
|
ifup); |
|
} else if (memcmp(listen_node->loc_addr, ip_zero, |
|
ipv4 ? 4 : 16)) { |
|
if (!irdma_manage_qhash(iwdev, &nfo, |
|
IRDMA_QHASH_TYPE_TCP_SYN, op, |
|
NULL, false)) |
|
listen_node->qhash_set = ifup; |
|
} |
|
} |
|
spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); |
|
|
|
/* disconnect any connected qp's on ifdown */ |
|
if (!ifup) |
|
irdma_cm_teardown_connections(iwdev, ipaddr, &nfo, false); |
|
}
|
|
|