diff options
Diffstat (limited to 'drivers/infiniband/hw/nes/nes_cm.c')
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_cm.c | 2402 |
1 files changed, 1593 insertions, 809 deletions
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c index a01b4488208..6f09a72e78d 100644 --- a/drivers/infiniband/hw/nes/nes_cm.c +++ b/drivers/infiniband/hw/nes/nes_cm.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved. + * Copyright (c) 2006 - 2014 Intel Corporation. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU @@ -34,7 +34,7 @@ #define TCPOPT_TIMESTAMP 8 -#include <asm/atomic.h> +#include <linux/atomic.h> #include <linux/skbuff.h> #include <linux/ip.h> #include <linux/tcp.h> @@ -52,10 +52,14 @@ #include <linux/random.h> #include <linux/list.h> #include <linux/threads.h> +#include <linux/highmem.h> +#include <linux/slab.h> #include <net/arp.h> #include <net/neighbour.h> #include <net/route.h> #include <net/ip_fib.h> +#include <net/tcp.h> +#include <linux/fcntl.h> #include "nes.h" @@ -65,8 +69,8 @@ u32 cm_packets_dropped; u32 cm_packets_retrans; u32 cm_packets_created; u32 cm_packets_received; -u32 cm_listens_created; -u32 cm_listens_destroyed; +atomic_t cm_listens_created; +atomic_t cm_listens_destroyed; u32 cm_backlog_drops; atomic_t cm_loopbacks; atomic_t cm_nodes_created; @@ -74,26 +78,19 @@ atomic_t cm_nodes_destroyed; atomic_t cm_accel_dropped_pkts; atomic_t cm_resets_recvd; -static inline int mini_cm_accelerated(struct nes_cm_core *, - struct nes_cm_node *); -static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, - struct nes_vnic *, struct nes_cm_info *); +static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *); +static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *); static int mini_cm_del_listen(struct nes_cm_core *, struct nes_cm_listener *); -static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *, - struct nes_vnic *, u16, void *, struct nes_cm_info *); +static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *, struct nes_vnic *, u16, void *, struct nes_cm_info *); static int mini_cm_close(struct nes_cm_core *, struct nes_cm_node *); -static int mini_cm_accept(struct nes_cm_core *, struct ietf_mpa_frame *, - struct nes_cm_node *); -static int mini_cm_reject(struct nes_cm_core *, struct ietf_mpa_frame *, - struct nes_cm_node *); -static int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *, - struct sk_buff *); +static int mini_cm_accept(struct nes_cm_core *, struct nes_cm_node *); +static int mini_cm_reject(struct nes_cm_core *, struct nes_cm_node *); +static int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *, struct sk_buff *); static int mini_cm_dealloc_core(struct nes_cm_core *); static int mini_cm_get(struct nes_cm_core *); static int mini_cm_set(struct nes_cm_core *, u32, u32); -static void form_cm_frame(struct sk_buff *, struct nes_cm_node *, - void *, u32, void *, u32, u8); +static void form_cm_frame(struct sk_buff *, struct nes_cm_node *, void *, u32, void *, u32, u8); static int add_ref_cm_node(struct nes_cm_node *); static int rem_ref_cm_node(struct nes_cm_core *, struct nes_cm_node *); @@ -103,29 +100,36 @@ static int nes_disconnect(struct nes_qp *nesqp, int abrupt); static void nes_disconnect_worker(struct work_struct *work); static int send_mpa_request(struct nes_cm_node *, struct sk_buff *); +static int send_mpa_reject(struct nes_cm_node *); static int send_syn(struct nes_cm_node *, u32, struct sk_buff *); static int send_reset(struct nes_cm_node *, struct sk_buff *); static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb); static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb); -static void process_packet(struct nes_cm_node *, struct sk_buff *, - struct nes_cm_core *); +static void process_packet(struct nes_cm_node *, struct sk_buff *, struct nes_cm_core *); static void active_open_err(struct nes_cm_node *, struct sk_buff *, int); static void passive_open_err(struct nes_cm_node *, struct sk_buff *, int); static void cleanup_retrans_entry(struct nes_cm_node *); -static void handle_rcv_mpa(struct nes_cm_node *, struct sk_buff *, - enum nes_cm_event_type); +static void handle_rcv_mpa(struct nes_cm_node *, struct sk_buff *); static void free_retrans_entry(struct nes_cm_node *cm_node); -static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, - struct sk_buff *skb, int optionsize, int passive); +static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, struct sk_buff *skb, int optionsize, int passive); /* CM event handler functions */ static void cm_event_connected(struct nes_cm_event *); static void cm_event_connect_error(struct nes_cm_event *); static void cm_event_reset(struct nes_cm_event *); static void cm_event_mpa_req(struct nes_cm_event *); +static void cm_event_mpa_reject(struct nes_cm_event *); +static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node); + +/* MPA build functions */ +static int cm_build_mpa_frame(struct nes_cm_node *, u8 **, u16 *, u8 *, u8); +static void build_mpa_v2(struct nes_cm_node *, void *, u8); +static void build_mpa_v1(struct nes_cm_node *, void *, u8); +static void build_rdma0_msg(struct nes_cm_node *, struct nes_qp **); static void print_core(struct nes_cm_core *core); +static void record_ird_ord(struct nes_cm_node *, u16, u16); /* External CM API Interface */ /* instance of function pointers for client API */ @@ -154,12 +158,20 @@ atomic_t cm_connecteds; atomic_t cm_connect_reqs; atomic_t cm_rejects; +int nes_add_ref_cm_node(struct nes_cm_node *cm_node) +{ + return add_ref_cm_node(cm_node); +} +int nes_rem_ref_cm_node(struct nes_cm_node *cm_node) +{ + return rem_ref_cm_node(cm_node->cm_core, cm_node); +} /** * create_event */ -static struct nes_cm_event *create_event(struct nes_cm_node *cm_node, - enum nes_cm_event_type type) +static struct nes_cm_event *create_event(struct nes_cm_node * cm_node, + enum nes_cm_event_type type) { struct nes_cm_event *event; @@ -181,10 +193,10 @@ static struct nes_cm_event *create_event(struct nes_cm_node *cm_node, event->cm_info.cm_id = cm_node->cm_id; nes_debug(NES_DBG_CM, "cm_node=%p Created event=%p, type=%u, " - "dst_addr=%08x[%x], src_addr=%08x[%x]\n", - cm_node, event, type, event->cm_info.loc_addr, - event->cm_info.loc_port, event->cm_info.rem_addr, - event->cm_info.rem_port); + "dst_addr=%08x[%x], src_addr=%08x[%x]\n", + cm_node, event, type, event->cm_info.loc_addr, + event->cm_info.loc_port, event->cm_info.rem_addr, + event->cm_info.rem_port); nes_cm_post_event(event); return event; @@ -196,21 +208,48 @@ static struct nes_cm_event *create_event(struct nes_cm_node *cm_node, */ static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb) { - int ret; + u8 start_addr = 0; + u8 *start_ptr = &start_addr; + u8 **start_buff = &start_ptr; + u16 buff_len = 0; + if (!skb) { nes_debug(NES_DBG_CM, "skb set to NULL\n"); return -1; } /* send an MPA Request frame */ - form_cm_frame(skb, cm_node, NULL, 0, &cm_node->mpa_frame, - cm_node->mpa_frame_size, SET_ACK); + cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REQUEST); + form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK); - ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); - if (ret < 0) - return ret; + return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); +} - return 0; + + +static int send_mpa_reject(struct nes_cm_node *cm_node) +{ + struct sk_buff *skb = NULL; + u8 start_addr = 0; + u8 *start_ptr = &start_addr; + u8 **start_buff = &start_ptr; + u16 buff_len = 0; + struct ietf_mpa_v1 *mpa_frame; + + skb = dev_alloc_skb(MAX_CM_BUFFER); + if (!skb) { + nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); + return -ENOMEM; + } + + /* send an MPA reject frame */ + cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REPLY); + mpa_frame = (struct ietf_mpa_v1 *)*start_buff; + mpa_frame->flags |= IETF_MPA_FLAGS_REJECT; + form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK | SET_FIN); + + cm_node->state = NES_CM_STATE_FIN_WAIT1; + return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); } @@ -218,30 +257,173 @@ static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb) * recv_mpa - process a received TCP pkt, we are expecting an * IETF MPA frame */ -static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 len) +static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type, + u32 len) { - struct ietf_mpa_frame *mpa_frame; + struct ietf_mpa_v1 *mpa_frame; + struct ietf_mpa_v2 *mpa_v2_frame; + struct ietf_rtr_msg *rtr_msg; + int mpa_hdr_len; + int priv_data_len; + + *type = NES_MPA_REQUEST_ACCEPT; /* assume req frame is in tcp data payload */ - if (len < sizeof(struct ietf_mpa_frame)) { + if (len < sizeof(struct ietf_mpa_v1)) { nes_debug(NES_DBG_CM, "The received ietf buffer was too small (%x)\n", len); - return -1; + return -EINVAL; } - mpa_frame = (struct ietf_mpa_frame *)buffer; - cm_node->mpa_frame_size = ntohs(mpa_frame->priv_data_len); + /* points to the beginning of the frame, which could be MPA V1 or V2 */ + mpa_frame = (struct ietf_mpa_v1 *)buffer; + mpa_hdr_len = sizeof(struct ietf_mpa_v1); + priv_data_len = ntohs(mpa_frame->priv_data_len); - if (cm_node->mpa_frame_size + sizeof(struct ietf_mpa_frame) != len) { + /* make sure mpa private data len is less than 512 bytes */ + if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) { + nes_debug(NES_DBG_CM, "The received Length of Private" + " Data field exceeds 512 octets\n"); + return -EINVAL; + } + /* + * make sure MPA receiver interoperate with the + * received MPA version and MPA key information + * + */ + if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) { + nes_debug(NES_DBG_CM, "The received mpa version" + " is not supported\n"); + return -EINVAL; + } + /* + * backwards compatibility only + */ + if (mpa_frame->rev > cm_node->mpa_frame_rev) { + nes_debug(NES_DBG_CM, "The received mpa version" + " can not be interoperated\n"); + return -EINVAL; + } else { + cm_node->mpa_frame_rev = mpa_frame->rev; + } + + if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { + if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) { + nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); + return -EINVAL; + } + } else { + if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) { + nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); + return -EINVAL; + } + } + + if (priv_data_len + mpa_hdr_len != len) { nes_debug(NES_DBG_CM, "The received ietf buffer was not right" - " complete (%x + %x != %x)\n", - cm_node->mpa_frame_size, (u32)sizeof(struct ietf_mpa_frame), len); - return -1; + " complete (%x + %x != %x)\n", + priv_data_len, mpa_hdr_len, len); + return -EINVAL; + } + /* make sure it does not exceed the max size */ + if (len > MAX_CM_BUFFER) { + nes_debug(NES_DBG_CM, "The received ietf buffer was too large" + " (%x + %x != %x)\n", + priv_data_len, mpa_hdr_len, len); + return -EINVAL; + } + + cm_node->mpa_frame_size = priv_data_len; + + switch (mpa_frame->rev) { + case IETF_MPA_V2: { + u16 ird_size; + u16 ord_size; + u16 rtr_ctrl_ird; + u16 rtr_ctrl_ord; + + mpa_v2_frame = (struct ietf_mpa_v2 *)buffer; + mpa_hdr_len += IETF_RTR_MSG_SIZE; + cm_node->mpa_frame_size -= IETF_RTR_MSG_SIZE; + rtr_msg = &mpa_v2_frame->rtr_msg; + + /* parse rtr message */ + rtr_ctrl_ird = ntohs(rtr_msg->ctrl_ird); + rtr_ctrl_ord = ntohs(rtr_msg->ctrl_ord); + ird_size = rtr_ctrl_ird & IETF_NO_IRD_ORD; + ord_size = rtr_ctrl_ord & IETF_NO_IRD_ORD; + + if (!(rtr_ctrl_ird & IETF_PEER_TO_PEER)) { + /* send reset */ + return -EINVAL; + } + if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD) + cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD; + + if (cm_node->mpav2_ird_ord != IETF_NO_IRD_ORD) { + /* responder */ + if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { + /* we are still negotiating */ + if (ord_size > NES_MAX_IRD) { + cm_node->ird_size = NES_MAX_IRD; + } else { + cm_node->ird_size = ord_size; + if (ord_size == 0 && + (rtr_ctrl_ord & IETF_RDMA0_READ)) { + cm_node->ird_size = 1; + nes_debug(NES_DBG_CM, + "%s: Remote peer doesn't support RDMA0_READ (ord=%u)\n", + __func__, ord_size); + } + } + if (ird_size > NES_MAX_ORD) + cm_node->ord_size = NES_MAX_ORD; + else + cm_node->ord_size = ird_size; + } else { /* initiator */ + if (ord_size > NES_MAX_IRD) { + nes_debug(NES_DBG_CM, + "%s: Unable to support the requested (ord =%u)\n", + __func__, ord_size); + return -EINVAL; + } + cm_node->ird_size = ord_size; + + if (ird_size > NES_MAX_ORD) { + cm_node->ord_size = NES_MAX_ORD; + } else { + if (ird_size == 0 && + (rtr_ctrl_ord & IETF_RDMA0_READ)) { + nes_debug(NES_DBG_CM, + "%s: Remote peer doesn't support RDMA0_READ (ird=%u)\n", + __func__, ird_size); + return -EINVAL; + } else { + cm_node->ord_size = ird_size; + } + } + } + } + + if (rtr_ctrl_ord & IETF_RDMA0_READ) { + cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; + + } else if (rtr_ctrl_ord & IETF_RDMA0_WRITE) { + cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO; + } else { /* Not supported RDMA0 operation */ + return -EINVAL; + } + break; + } + case IETF_MPA_V1: + default: + break; } /* copy entire MPA frame to our cm_node's frame */ - memcpy(cm_node->mpa_frame_buf, buffer + sizeof(struct ietf_mpa_frame), - cm_node->mpa_frame_size); + memcpy(cm_node->mpa_frame_buf, buffer + mpa_hdr_len, cm_node->mpa_frame_size); + if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT) + *type = NES_MPA_REQUEST_REJECT; return 0; } @@ -251,8 +433,8 @@ static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 len) * node info to build. */ static void form_cm_frame(struct sk_buff *skb, - struct nes_cm_node *cm_node, void *options, u32 optionsize, - void *data, u32 datasize, u8 flags) + struct nes_cm_node *cm_node, void *options, u32 optionsize, + void *data, u32 datasize, u8 flags) { struct tcphdr *tcph; struct iphdr *iph; @@ -261,14 +443,14 @@ static void form_cm_frame(struct sk_buff *skb, u16 packetsize = sizeof(*iph); packetsize += sizeof(*tcph); - packetsize += optionsize + datasize; + packetsize += optionsize + datasize; + skb_trim(skb, 0); memset(skb->data, 0x00, ETH_HLEN + sizeof(*iph) + sizeof(*tcph)); - skb->len = 0; buf = skb_put(skb, packetsize + ETH_HLEN); - ethh = (struct ethhdr *) buf; + ethh = (struct ethhdr *)buf; buf += ETH_HLEN; iph = (struct iphdr *)buf; @@ -276,10 +458,12 @@ static void form_cm_frame(struct sk_buff *skb, tcph = (struct tcphdr *)buf; skb_reset_mac_header(skb); skb_set_network_header(skb, ETH_HLEN); - skb_set_transport_header(skb, ETH_HLEN+sizeof(*iph)); + skb_set_transport_header(skb, ETH_HLEN + sizeof(*iph)); buf += sizeof(*tcph); skb->ip_summed = CHECKSUM_PARTIAL; + if (!(cm_node->netdev->features & NETIF_F_IP_CSUM)) + skb->ip_summed = CHECKSUM_NONE; skb->protocol = htons(0x800); skb->data_len = 0; skb->mac_len = ETH_HLEN; @@ -289,34 +473,36 @@ static void form_cm_frame(struct sk_buff *skb, ethh->h_proto = htons(0x0800); iph->version = IPVERSION; - iph->ihl = 5; /* 5 * 4Byte words, IP headr len */ + iph->ihl = 5; /* 5 * 4Byte words, IP headr len */ iph->tos = 0; iph->tot_len = htons(packetsize); iph->id = htons(++cm_node->tcp_cntxt.loc_id); iph->frag_off = htons(0x4000); iph->ttl = 0x40; - iph->protocol = 0x06; /* IPPROTO_TCP */ + iph->protocol = 0x06; /* IPPROTO_TCP */ - iph->saddr = htonl(cm_node->loc_addr); - iph->daddr = htonl(cm_node->rem_addr); + iph->saddr = htonl(cm_node->mapped_loc_addr); + iph->daddr = htonl(cm_node->mapped_rem_addr); - tcph->source = htons(cm_node->loc_port); - tcph->dest = htons(cm_node->rem_port); + tcph->source = htons(cm_node->mapped_loc_port); + tcph->dest = htons(cm_node->mapped_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 + } else { tcph->ack_seq = 0; + } if (flags & SET_SYN) { cm_node->tcp_cntxt.loc_seq_num++; tcph->syn = 1; - } else + } else { cm_node->tcp_cntxt.loc_seq_num += datasize; + } if (flags & SET_FIN) { cm_node->tcp_cntxt.loc_seq_num++; @@ -337,9 +523,101 @@ static void form_cm_frame(struct sk_buff *skb, skb_shinfo(skb)->nr_frags = 0; cm_packets_created++; +} + +/* + * nes_create_sockaddr - Record ip addr and tcp port in a sockaddr struct + */ +static void nes_create_sockaddr(__be32 ip_addr, __be16 port, + struct sockaddr_storage *addr) +{ + struct sockaddr_in *nes_sockaddr = (struct sockaddr_in *)addr; + nes_sockaddr->sin_family = AF_INET; + memcpy(&nes_sockaddr->sin_addr.s_addr, &ip_addr, sizeof(__be32)); + nes_sockaddr->sin_port = port; +} + +/* + * nes_create_mapinfo - Create a mapinfo object in the port mapper data base + */ +static int nes_create_mapinfo(struct nes_cm_info *cm_info) +{ + struct sockaddr_storage local_sockaddr; + struct sockaddr_storage mapped_sockaddr; + nes_create_sockaddr(htonl(cm_info->loc_addr), htons(cm_info->loc_port), + &local_sockaddr); + nes_create_sockaddr(htonl(cm_info->mapped_loc_addr), + htons(cm_info->mapped_loc_port), &mapped_sockaddr); + + return iwpm_create_mapinfo(&local_sockaddr, + &mapped_sockaddr, RDMA_NL_NES); +} + +/* + * nes_remove_mapinfo - Remove a mapinfo object from the port mapper data base + * and send a remove mapping op message to + * the userspace port mapper + */ +static int nes_remove_mapinfo(u32 loc_addr, u16 loc_port, + u32 mapped_loc_addr, u16 mapped_loc_port) +{ + struct sockaddr_storage local_sockaddr; + struct sockaddr_storage mapped_sockaddr; + + nes_create_sockaddr(htonl(loc_addr), htons(loc_port), &local_sockaddr); + nes_create_sockaddr(htonl(mapped_loc_addr), htons(mapped_loc_port), + &mapped_sockaddr); + + iwpm_remove_mapinfo(&local_sockaddr, &mapped_sockaddr); + return iwpm_remove_mapping(&local_sockaddr, RDMA_NL_NES); +} + +/* + * nes_form_pm_msg - Form a port mapper message with mapping info + */ +static void nes_form_pm_msg(struct nes_cm_info *cm_info, + struct iwpm_sa_data *pm_msg) +{ + nes_create_sockaddr(htonl(cm_info->loc_addr), htons(cm_info->loc_port), + &pm_msg->loc_addr); + nes_create_sockaddr(htonl(cm_info->rem_addr), htons(cm_info->rem_port), + &pm_msg->rem_addr); } +/* + * nes_form_reg_msg - Form a port mapper message with dev info + */ +static void nes_form_reg_msg(struct nes_vnic *nesvnic, + struct iwpm_dev_data *pm_msg) +{ + memcpy(pm_msg->dev_name, nesvnic->nesibdev->ibdev.name, + IWPM_DEVNAME_SIZE); + memcpy(pm_msg->if_name, nesvnic->netdev->name, IWPM_IFNAME_SIZE); +} + +/* + * nes_record_pm_msg - Save the received mapping info + */ +static void nes_record_pm_msg(struct nes_cm_info *cm_info, + struct iwpm_sa_data *pm_msg) +{ + struct sockaddr_in *mapped_loc_addr = + (struct sockaddr_in *)&pm_msg->mapped_loc_addr; + struct sockaddr_in *mapped_rem_addr = + (struct sockaddr_in *)&pm_msg->mapped_rem_addr; + + if (mapped_loc_addr->sin_family == AF_INET) { + cm_info->mapped_loc_addr = + ntohl(mapped_loc_addr->sin_addr.s_addr); + cm_info->mapped_loc_port = ntohs(mapped_loc_addr->sin_port); + } + if (mapped_rem_addr->sin_family == AF_INET) { + cm_info->mapped_rem_addr = + ntohl(mapped_rem_addr->sin_addr.s_addr); + cm_info->mapped_rem_port = ntohs(mapped_rem_addr->sin_port); + } +} /** * print_core - dump a cm core @@ -352,7 +630,7 @@ static void print_core(struct nes_cm_core *core) return; nes_debug(NES_DBG_CM, "---------------------------------------------\n"); - nes_debug(NES_DBG_CM, "State : %u \n", core->state); + nes_debug(NES_DBG_CM, "State : %u \n", core->state); nes_debug(NES_DBG_CM, "Listen Nodes : %u \n", atomic_read(&core->listen_node_cnt)); nes_debug(NES_DBG_CM, "Active Nodes : %u \n", atomic_read(&core->node_cnt)); @@ -362,6 +640,162 @@ static void print_core(struct nes_cm_core *core) nes_debug(NES_DBG_CM, "-------------- end core ---------------\n"); } +static void record_ird_ord(struct nes_cm_node *cm_node, + u16 conn_ird, u16 conn_ord) +{ + if (conn_ird > NES_MAX_IRD) + conn_ird = NES_MAX_IRD; + + if (conn_ord > NES_MAX_ORD) + conn_ord = NES_MAX_ORD; + + cm_node->ird_size = conn_ird; + cm_node->ord_size = conn_ord; +} + +/** + * cm_build_mpa_frame - build a MPA V1 frame or MPA V2 frame + */ +static int cm_build_mpa_frame(struct nes_cm_node *cm_node, u8 **start_buff, + u16 *buff_len, u8 *pci_mem, u8 mpa_key) +{ + int ret = 0; + + *start_buff = (pci_mem) ? pci_mem : &cm_node->mpa_frame_buf[0]; + + switch (cm_node->mpa_frame_rev) { + case IETF_MPA_V1: + *start_buff = (u8 *)*start_buff + sizeof(struct ietf_rtr_msg); + *buff_len = sizeof(struct ietf_mpa_v1) + cm_node->mpa_frame_size; + build_mpa_v1(cm_node, *start_buff, mpa_key); + break; + case IETF_MPA_V2: + *buff_len = sizeof(struct ietf_mpa_v2) + cm_node->mpa_frame_size; + build_mpa_v2(cm_node, *start_buff, mpa_key); + break; + default: + ret = -EINVAL; + } + return ret; +} + +/** + * build_mpa_v2 - build a MPA V2 frame + */ +static void build_mpa_v2(struct nes_cm_node *cm_node, + void *start_addr, u8 mpa_key) +{ + struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr; + struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg; + u16 ctrl_ird; + u16 ctrl_ord; + + /* initialize the upper 5 bytes of the frame */ + build_mpa_v1(cm_node, start_addr, mpa_key); + mpa_frame->flags |= IETF_MPA_V2_FLAG; /* set a bit to indicate MPA V2 */ + mpa_frame->priv_data_len += htons(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; + ctrl_ord = cm_node->ord_size & IETF_NO_IRD_ORD; + } + ctrl_ird |= IETF_PEER_TO_PEER; + ctrl_ird |= IETF_FLPDU_ZERO_LEN; + + 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; + } + } + rtr_msg->ctrl_ird = htons(ctrl_ird); + rtr_msg->ctrl_ord = htons(ctrl_ord); +} + +/** + * build_mpa_v1 - build a MPA V1 frame + */ +static void build_mpa_v1(struct nes_cm_node *cm_node, void *start_addr, u8 mpa_key) +{ + struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)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; + } + mpa_frame->flags = IETF_MPA_FLAGS_CRC; + mpa_frame->rev = cm_node->mpa_frame_rev; + mpa_frame->priv_data_len = htons(cm_node->mpa_frame_size); +} + +static void build_rdma0_msg(struct nes_cm_node *cm_node, struct nes_qp **nesqp_addr) +{ + u64 u64temp; + struct nes_qp *nesqp = *nesqp_addr; + struct nes_hw_qp_wqe *wqe = &nesqp->hwqp.sq_vbase[0]; + + u64temp = (unsigned long)nesqp->nesuqp_addr; + u64temp |= NES_SW_CONTEXT_ALIGN >> 1; + set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp); + + wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0; + wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0; + + switch (cm_node->send_rdma0_op) { + case SEND_RDMA_WRITE_ZERO: + nes_debug(NES_DBG_CM, "Sending first write.\n"); + wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = + cpu_to_le32(NES_IWARP_SQ_OP_RDMAW); + wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0; + wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0; + wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0; + break; + + case SEND_RDMA_READ_ZERO: + default: + if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO) + WARN(1, "Unsupported RDMA0 len operation=%u\n", + cm_node->send_rdma0_op); + nes_debug(NES_DBG_CM, "Sending first rdma operation.\n"); + wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = + cpu_to_le32(NES_IWARP_SQ_OP_RDMAR); + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = 1; + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = 0; + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 0; + wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = 1; + wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 1; + break; + } + + if (nesqp->sq_kmapped) { + nesqp->sq_kmapped = 0; + kunmap(nesqp->page); + } + + /*use the reserved spot on the WQ for the extra first WQE*/ + nesqp->nesqp_context->ird_ord_sizes &= cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | + NES_QPCONTEXT_ORDIRD_WRPDU | + NES_QPCONTEXT_ORDIRD_ALSMM)); + nesqp->skip_lsmm = 1; + nesqp->hwqp.sq_tail = 0; +} /** * schedule_nes_timer @@ -369,18 +803,17 @@ static void print_core(struct nes_cm_core *core) * rem_ref_cm_node(cm_core, cm_node);add_ref_cm_node(cm_node); */ int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, - enum nes_timer_type type, int send_retrans, - int close_when_complete) + enum nes_timer_type type, int send_retrans, + int close_when_complete) { - unsigned long flags; + unsigned long flags; struct nes_cm_core *cm_core = cm_node->cm_core; struct nes_timer_entry *new_send; int ret = 0; - u32 was_timer_set; new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC); if (!new_send) - return -1; + return -ENOMEM; /* new_send->timetosend = currenttime */ new_send->retrycount = NES_DEFAULT_RETRYS; @@ -393,10 +826,13 @@ int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, new_send->close_when_complete = close_when_complete; if (type == NES_TIMER_TYPE_CLOSE) { - new_send->timetosend += (HZ/10); - spin_lock_irqsave(&cm_node->recv_list_lock, flags); - list_add_tail(&new_send->list, &cm_node->recv_list); - spin_unlock_irqrestore(&cm_node->recv_list_lock, flags); + new_send->timetosend += (HZ / 10); + if (cm_node->recv_entry) { + kfree(new_send); + WARN_ON(1); + return -EINVAL; + } + cm_node->recv_entry = new_send; } if (type == NES_TIMER_TYPE_SEND) { @@ -411,9 +847,9 @@ int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev); if (ret != NETDEV_TX_OK) { nes_debug(NES_DBG_CM, "Error sending packet %p " - "(jiffies = %lu)\n", new_send, jiffies); - atomic_dec(&new_send->skb->users); + "(jiffies = %lu)\n", new_send, jiffies); new_send->timetosend = jiffies; + ret = NETDEV_TX_OK; } else { cm_packets_sent++; if (!send_retrans) { @@ -425,43 +861,102 @@ int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, } } - 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); - } + if (!timer_pending(&cm_core->tcp_timer)) + mod_timer(&cm_core->tcp_timer, new_send->timetosend); return ret; } +static void nes_retrans_expired(struct nes_cm_node *cm_node) +{ + struct iw_cm_id *cm_id = cm_node->cm_id; + enum nes_cm_node_state state = cm_node->state; + cm_node->state = NES_CM_STATE_CLOSED; + + switch (state) { + case NES_CM_STATE_SYN_RCVD: + case NES_CM_STATE_CLOSING: + rem_ref_cm_node(cm_node->cm_core, cm_node); + break; + case NES_CM_STATE_LAST_ACK: + case NES_CM_STATE_FIN_WAIT1: + if (cm_node->cm_id) + cm_id->rem_ref(cm_id); + send_reset(cm_node, NULL); + break; + default: + add_ref_cm_node(cm_node); + send_reset(cm_node, NULL); + create_event(cm_node, NES_CM_EVENT_ABORTED); + } +} + +static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node) +{ + struct nes_timer_entry *recv_entry = cm_node->recv_entry; + struct iw_cm_id *cm_id = cm_node->cm_id; + struct nes_qp *nesqp; + unsigned long qplockflags; + + if (!recv_entry) + return; + nesqp = (struct nes_qp *)recv_entry->skb; + if (nesqp) { + spin_lock_irqsave(&nesqp->lock, qplockflags); + if (nesqp->cm_id) { + nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " + "refcount = %d: HIT A " + "NES_TIMER_TYPE_CLOSE with something " + "to do!!!\n", nesqp->hwqp.qp_id, cm_id, + atomic_read(&nesqp->refcount)); + nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; + nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; + nesqp->ibqp_state = IB_QPS_ERR; + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_cm_disconn(nesqp); + } else { + spin_unlock_irqrestore(&nesqp->lock, qplockflags); + nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " + "refcount = %d: HIT A " + "NES_TIMER_TYPE_CLOSE with nothing " + "to do!!!\n", nesqp->hwqp.qp_id, cm_id, + atomic_read(&nesqp->refcount)); + } + } else if (rem_node) { + /* TIME_WAIT state */ + rem_ref_cm_node(cm_node->cm_core, cm_node); + } + if (cm_node->cm_id) + cm_id->rem_ref(cm_id); + kfree(recv_entry); + cm_node->recv_entry = NULL; +} /** * nes_cm_timer_tick */ static void nes_cm_timer_tick(unsigned long pass) { - unsigned long flags, qplockflags; + unsigned long flags; unsigned long nexttimeout = jiffies + NES_LONG_TIME; - struct iw_cm_id *cm_id; struct nes_cm_node *cm_node; struct nes_timer_entry *send_entry, *recv_entry; - struct list_head *list_core, *list_core_temp; - struct list_head *list_node, *list_node_temp; + struct list_head *list_core_temp; + struct list_head *list_node; struct nes_cm_core *cm_core = g_cm_core; - struct nes_qp *nesqp; u32 settimer = 0; + unsigned long timetosend; int ret = NETDEV_TX_OK; - enum nes_cm_node_state last_state; struct list_head timer_list; + INIT_LIST_HEAD(&timer_list); spin_lock_irqsave(&cm_core->ht_lock, flags); list_for_each_safe(list_node, list_core_temp, - &cm_core->connected_nodes) { + &cm_core->connected_nodes) { cm_node = container_of(list_node, struct nes_cm_node, list); - if (!list_empty(&cm_node->recv_list) || (cm_node->send_entry)) { + if ((cm_node->recv_entry) || (cm_node->send_entry)) { add_ref_cm_node(cm_node); list_add(&cm_node->timer_entry, &timer_list); } @@ -470,55 +965,20 @@ static void nes_cm_timer_tick(unsigned long pass) list_for_each_safe(list_node, list_core_temp, &timer_list) { cm_node = container_of(list_node, struct nes_cm_node, - timer_entry); - spin_lock_irqsave(&cm_node->recv_list_lock, flags); - list_for_each_safe(list_core, list_node_temp, - &cm_node->recv_list) { - recv_entry = container_of(list_core, - struct nes_timer_entry, list); - if (!recv_entry) - break; + timer_entry); + recv_entry = cm_node->recv_entry; + + if (recv_entry) { if (time_after(recv_entry->timetosend, jiffies)) { if (nexttimeout > recv_entry->timetosend || - !settimer) { + !settimer) { nexttimeout = recv_entry->timetosend; settimer = 1; } - continue; - } - list_del(&recv_entry->list); - cm_id = cm_node->cm_id; - spin_unlock_irqrestore(&cm_node->recv_list_lock, flags); - nesqp = (struct nes_qp *)recv_entry->skb; - spin_lock_irqsave(&nesqp->lock, qplockflags); - if (nesqp->cm_id) { - nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " - "refcount = %d: HIT A " - "NES_TIMER_TYPE_CLOSE with something " - "to do!!!\n", nesqp->hwqp.qp_id, cm_id, - atomic_read(&nesqp->refcount)); - nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; - nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; - nesqp->ibqp_state = IB_QPS_ERR; - spin_unlock_irqrestore(&nesqp->lock, - qplockflags); - nes_cm_disconn(nesqp); } else { - spin_unlock_irqrestore(&nesqp->lock, - qplockflags); - nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " - "refcount = %d: HIT A " - "NES_TIMER_TYPE_CLOSE with nothing " - "to do!!!\n", nesqp->hwqp.qp_id, cm_id, - atomic_read(&nesqp->refcount)); + handle_recv_entry(cm_node, 1); } - if (cm_id) - cm_id->rem_ref(cm_id); - - kfree(recv_entry); - spin_lock_irqsave(&cm_node->recv_list_lock, flags); } - spin_unlock_irqrestore(&cm_node->recv_list_lock, flags); spin_lock_irqsave(&cm_node->retrans_list_lock, flags); do { @@ -528,63 +988,57 @@ static void nes_cm_timer_tick(unsigned long pass) if (time_after(send_entry->timetosend, jiffies)) { if (cm_node->state != NES_CM_STATE_TSA) { if ((nexttimeout > - send_entry->timetosend) || - !settimer) { + send_entry->timetosend) || + !settimer) { nexttimeout = send_entry->timetosend; settimer = 1; - break; } } else { free_retrans_entry(cm_node); - break; } + break; } if ((cm_node->state == NES_CM_STATE_TSA) || - (cm_node->state == NES_CM_STATE_CLOSED)) { + (cm_node->state == NES_CM_STATE_CLOSED)) { free_retrans_entry(cm_node); break; } if (!send_entry->retranscount || - !send_entry->retrycount) { + !send_entry->retrycount) { cm_packets_dropped++; - last_state = cm_node->state; - cm_node->state = NES_CM_STATE_CLOSED; free_retrans_entry(cm_node); + spin_unlock_irqrestore( &cm_node->retrans_list_lock, flags); - if (last_state == NES_CM_STATE_SYN_RCVD) - rem_ref_cm_node(cm_core, cm_node); - else - create_event(cm_node, - NES_CM_EVENT_ABORTED); + nes_retrans_expired(cm_node); + cm_node->state = NES_CM_STATE_CLOSED; spin_lock_irqsave(&cm_node->retrans_list_lock, - flags); + flags); break; } atomic_inc(&send_entry->skb->users); cm_packets_retrans++; nes_debug(NES_DBG_CM, "Retransmitting send_entry %p " - "for node %p, jiffies = %lu, time to send = " - "%lu, retranscount = %u, send_entry->seq_num = " - "0x%08X, cm_node->tcp_cntxt.rem_ack_num = " - "0x%08X\n", send_entry, cm_node, jiffies, - send_entry->timetosend, - send_entry->retranscount, - send_entry->seq_num, - cm_node->tcp_cntxt.rem_ack_num); + "for node %p, jiffies = %lu, time to send = " + "%lu, retranscount = %u, send_entry->seq_num = " + "0x%08X, cm_node->tcp_cntxt.rem_ack_num = " + "0x%08X\n", send_entry, cm_node, jiffies, + send_entry->timetosend, + send_entry->retranscount, + send_entry->seq_num, + cm_node->tcp_cntxt.rem_ack_num); spin_unlock_irqrestore(&cm_node->retrans_list_lock, - flags); + flags); ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev); spin_lock_irqsave(&cm_node->retrans_list_lock, flags); if (ret != NETDEV_TX_OK) { nes_debug(NES_DBG_CM, "rexmit failed for " - "node=%p\n", cm_node); + "node=%p\n", cm_node); cm_packets_bounced++; - atomic_dec(&send_entry->skb->users); send_entry->retrycount--; nexttimeout = jiffies + NES_SHORT_TIME; settimer = 1; @@ -593,15 +1047,18 @@ static void nes_cm_timer_tick(unsigned long pass) cm_packets_sent++; } nes_debug(NES_DBG_CM, "Packet Sent: retrans count = " - "%u, retry count = %u.\n", - send_entry->retranscount, - send_entry->retrycount); + "%u, retry count = %u.\n", + send_entry->retranscount, + send_entry->retrycount); if (send_entry->send_retrans) { send_entry->retranscount--; + timetosend = (NES_RETRY_TIMEOUT << + (NES_DEFAULT_RETRANS - send_entry->retranscount)); + send_entry->timetosend = jiffies + - NES_RETRY_TIMEOUT; + min(timetosend, NES_MAX_TIMEOUT); if (nexttimeout > send_entry->timetosend || - !settimer) { + !settimer) { nexttimeout = send_entry->timetosend; settimer = 1; } @@ -610,28 +1067,21 @@ static void nes_cm_timer_tick(unsigned long pass) close_when_complete = send_entry->close_when_complete; nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n", - cm_node, cm_node->state); + cm_node, cm_node->state); free_retrans_entry(cm_node); if (close_when_complete) rem_ref_cm_node(cm_node->cm_core, - cm_node); + cm_node); } } while (0); spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); rem_ref_cm_node(cm_node->cm_core, cm_node); - if (ret != NETDEV_TX_OK) { - nes_debug(NES_DBG_CM, "rexmit failed for cm_node=%p\n", - cm_node); - break; - } } if (settimer) { - if (!timer_pending(&cm_core->tcp_timer)) { - cm_core->tcp_timer.expires = nexttimeout; - add_timer(&cm_core->tcp_timer); - } + if (!timer_pending(&cm_core->tcp_timer)) + mod_timer(&cm_core->tcp_timer, nexttimeout); } } @@ -640,13 +1090,13 @@ static void nes_cm_timer_tick(unsigned long pass) * send_syn */ static int send_syn(struct nes_cm_node *cm_node, u32 sendack, - struct sk_buff *skb) + struct sk_buff *skb) { int ret; int flags = SET_SYN; char optionsbuffer[sizeof(struct option_mss) + - sizeof(struct option_windowscale) + sizeof(struct option_base) + - TCP_OPTIONS_PADDING]; + sizeof(struct option_windowscale) + sizeof(struct option_base) + + TCP_OPTIONS_PADDING]; int optionssize = 0; /* Sending MSS option */ @@ -714,7 +1164,7 @@ static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb) skb = dev_alloc_skb(MAX_CM_BUFFER); if (!skb) { nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); - return -1; + return -ENOMEM; } form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags); @@ -773,30 +1223,29 @@ static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb) * find_node - find a cm node that matches the reference cm node */ static struct nes_cm_node *find_node(struct nes_cm_core *cm_core, - u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr) + u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr) { unsigned long flags; struct list_head *hte; struct nes_cm_node *cm_node; - __be32 tmp_addr = cpu_to_be32(loc_addr); /* get a handle on the hte */ hte = &cm_core->connected_nodes; - nes_debug(NES_DBG_CM, "Searching for an owner node: %pI4:%x from core %p->%p\n", - &tmp_addr, loc_port, cm_core, hte); - /* walk list and find cm_node associated with this session ID */ spin_lock_irqsave(&cm_core->ht_lock, flags); list_for_each_entry(cm_node, hte, list) { /* compare quad, return node handle if a match */ nes_debug(NES_DBG_CM, "finding node %x:%x =? %x:%x ^ %x:%x =? %x:%x\n", - cm_node->loc_addr, cm_node->loc_port, - loc_addr, loc_port, - cm_node->rem_addr, cm_node->rem_port, - rem_addr, rem_port); - if ((cm_node->loc_addr == loc_addr) && (cm_node->loc_port == loc_port) && - (cm_node->rem_addr == rem_addr) && (cm_node->rem_port == rem_port)) { + cm_node->loc_addr, cm_node->loc_port, + loc_addr, loc_port, + cm_node->rem_addr, cm_node->rem_port, + rem_addr, rem_port); + if ((cm_node->mapped_loc_addr == loc_addr) && + (cm_node->mapped_loc_port == loc_port) && + (cm_node->mapped_rem_addr == rem_addr) && + (cm_node->mapped_rem_port == rem_port)) { + add_ref_cm_node(cm_node); spin_unlock_irqrestore(&cm_core->ht_lock, flags); return cm_node; @@ -813,20 +1262,29 @@ static struct nes_cm_node *find_node(struct nes_cm_core *cm_core, * find_listener - find a cm node listening on this addr-port pair */ static struct nes_cm_listener *find_listener(struct nes_cm_core *cm_core, - nes_addr_t dst_addr, u16 dst_port, enum nes_cm_listener_state listener_state) + nes_addr_t dst_addr, u16 dst_port, + enum nes_cm_listener_state listener_state, int local) { unsigned long flags; struct nes_cm_listener *listen_node; - __be32 tmp_addr = cpu_to_be32(dst_addr); + nes_addr_t listen_addr; + u16 listen_port; /* 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, list) { + if (local) { + listen_addr = listen_node->loc_addr; + listen_port = listen_node->loc_port; + } else { + listen_addr = listen_node->mapped_loc_addr; + listen_port = listen_node->mapped_loc_port; + } /* compare node pair, return node handle if a match */ - if (((listen_node->loc_addr == dst_addr) || - listen_node->loc_addr == 0x00000000) && - (listen_node->loc_port == dst_port) && - (listener_state & listen_node->listener_state)) { + if (((listen_addr == dst_addr) || + listen_addr == 0x00000000) && + (listen_port == dst_port) && + (listener_state & listen_node->listener_state)) { atomic_inc(&listen_node->ref_count); spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); return listen_node; @@ -834,14 +1292,10 @@ static struct nes_cm_listener *find_listener(struct nes_cm_core *cm_core, } spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); - nes_debug(NES_DBG_CM, "Unable to find listener for %pI4:%x\n", - &tmp_addr, dst_port); - /* no listener */ return NULL; } - /** * add_hte_node - add a cm node to the hash table */ @@ -854,7 +1308,7 @@ static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node return -EINVAL; nes_debug(NES_DBG_CM, "Adding Node %p to Active Connection HT\n", - cm_node); + cm_node); spin_lock_irqsave(&cm_core->ht_lock, flags); @@ -873,9 +1327,10 @@ static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node * mini_cm_dec_refcnt_listen */ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, - struct nes_cm_listener *listener, int free_hanging_nodes) + struct nes_cm_listener *listener, int free_hanging_nodes) { - int ret = 1; + int ret = -EINVAL; + int err = 0; unsigned long flags; struct list_head *list_pos = NULL; struct list_head *list_temp = NULL; @@ -883,8 +1338,8 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, struct list_head reset_list; nes_debug(NES_DBG_CM, "attempting listener= %p free_nodes= %d, " - "refcnt=%d\n", listener, free_hanging_nodes, - atomic_read(&listener->ref_count)); + "refcnt=%d\n", listener, free_hanging_nodes, + atomic_read(&listener->ref_count)); /* free non-accelerated child nodes for this listener */ INIT_LIST_HEAD(&reset_list); if (free_hanging_nodes) { @@ -892,7 +1347,7 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, list_for_each_safe(list_pos, list_temp, &g_cm_core->connected_nodes) { cm_node = container_of(list_pos, struct nes_cm_node, - list); + list); if ((cm_node->listener == listener) && (!cm_node->accelerated)) { add_ref_cm_node(cm_node); @@ -904,10 +1359,52 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, list_for_each_safe(list_pos, list_temp, &reset_list) { cm_node = container_of(list_pos, struct nes_cm_node, - reset_entry); - cleanup_retrans_entry(cm_node); - send_reset(cm_node, NULL); - rem_ref_cm_node(cm_node->cm_core, cm_node); + reset_entry); + { + struct nes_cm_node *loopback = cm_node->loopbackpartner; + enum nes_cm_node_state old_state; + if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) { + rem_ref_cm_node(cm_node->cm_core, cm_node); + } else { + if (!loopback) { + cleanup_retrans_entry(cm_node); + err = send_reset(cm_node, NULL); + if (err) { + cm_node->state = + NES_CM_STATE_CLOSED; + WARN_ON(1); + } else { + old_state = cm_node->state; + cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; + if (old_state != NES_CM_STATE_MPAREQ_RCVD) + rem_ref_cm_node( + cm_node->cm_core, + cm_node); + } + } else { + struct nes_cm_event event; + + event.cm_node = loopback; + event.cm_info.rem_addr = + loopback->rem_addr; + event.cm_info.loc_addr = + loopback->loc_addr; + event.cm_info.rem_port = + loopback->rem_port; + event.cm_info.loc_port = + loopback->loc_port; + event.cm_info.cm_id = loopback->cm_id; + add_ref_cm_node(loopback); + loopback->state = NES_CM_STATE_CLOSED; + cm_event_connect_error(&event); + cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; + + rem_ref_cm_node(cm_node->cm_core, + cm_node); + + } + } + } } spin_lock_irqsave(&cm_core->listen_list_lock, flags); @@ -920,8 +1417,18 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); if (listener->nesvnic) { - nes_manage_apbvt(listener->nesvnic, listener->loc_port, - PCI_FUNC(listener->nesvnic->nesdev->pcidev->devfn), NES_MANAGE_APBVT_DEL); + nes_manage_apbvt(listener->nesvnic, + listener->mapped_loc_port, + PCI_FUNC(listener->nesvnic->nesdev->pcidev->devfn), + NES_MANAGE_APBVT_DEL); + + nes_remove_mapinfo(listener->loc_addr, + listener->loc_port, + listener->mapped_loc_addr, + listener->mapped_loc_port); + nes_debug(NES_DBG_NLMSG, + "Delete APBVT mapped_loc_port = %04X\n", + listener->mapped_loc_port); } nes_debug(NES_DBG_CM, "destroying listener (%p)\n", listener); @@ -929,15 +1436,15 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, kfree(listener); listener = NULL; ret = 0; - cm_listens_destroyed++; + atomic_inc(&cm_listens_destroyed); } else { spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); } if (listener) { if (atomic_read(&listener->pend_accepts_cnt) > 0) nes_debug(NES_DBG_CM, "destroying listener (%p)" - " with non-zero pending accepts=%u\n", - listener, atomic_read(&listener->pend_accepts_cnt)); + " with non-zero pending accepts=%u\n", + listener, atomic_read(&listener->pend_accepts_cnt)); } return ret; @@ -948,7 +1455,7 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, * mini_cm_del_listen */ static int mini_cm_del_listen(struct nes_cm_core *cm_core, - struct nes_cm_listener *listener) + struct nes_cm_listener *listener) { listener->listener_state = NES_CM_LISTENER_PASSIVE_STATE; listener->cm_id = NULL; /* going to be destroyed pretty soon */ @@ -960,22 +1467,19 @@ static int mini_cm_del_listen(struct nes_cm_core *cm_core, * mini_cm_accelerated */ static inline int mini_cm_accelerated(struct nes_cm_core *cm_core, - struct nes_cm_node *cm_node) + struct nes_cm_node *cm_node) { - u32 was_timer_set; cm_node->accelerated = 1; if (cm_node->accept_pend) { BUG_ON(!cm_node->listener); atomic_dec(&cm_node->listener->pend_accepts_cnt); + cm_node->accept_pend = 0; BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); } - was_timer_set = timer_pending(&cm_core->tcp_timer); - if (!was_timer_set) { - cm_core->tcp_timer.expires = jiffies + NES_SHORT_TIME; - add_timer(&cm_core->tcp_timer); - } + if (!timer_pending(&cm_core->tcp_timer)) + mod_timer(&cm_core->tcp_timer, (jiffies + NES_SHORT_TIME)); return 0; } @@ -984,52 +1488,74 @@ static inline int mini_cm_accelerated(struct nes_cm_core *cm_core, /** * nes_addr_resolve_neigh */ -static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip) +static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpindex) { struct rtable *rt; - struct flowi fl; struct neighbour *neigh; - int rc = -1; - - memset(&fl, 0, sizeof fl); - fl.nl_u.ip4_u.daddr = htonl(dst_ip); - if (ip_route_output_key(&init_net, &rt, &fl)) { - printk("%s: ip_route_output_key failed for 0x%08X\n", - __func__, dst_ip); + int rc = arpindex; + struct net_device *netdev; + struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter; + + rt = ip_route_output(&init_net, htonl(dst_ip), 0, 0, 0); + if (IS_ERR(rt)) { + printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n", + __func__, dst_ip); return rc; } - neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, nesvnic->netdev); + if (netif_is_bond_slave(nesvnic->netdev)) + netdev = netdev_master_upper_dev_get(nesvnic->netdev); + else + netdev = nesvnic->netdev; + + neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, netdev); + + rcu_read_lock(); if (neigh) { if (neigh->nud_state & NUD_VALID) { nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X" " is %pM, Gateway is 0x%08X \n", dst_ip, neigh->ha, ntohl(rt->rt_gateway)); + + if (arpindex >= 0) { + if (ether_addr_equal(nesadapter->arp_table[arpindex].mac_addr, neigh->ha)) { + /* Mac address same as in nes_arp_table */ + goto out; + } + + nes_manage_arp_cache(nesvnic->netdev, + nesadapter->arp_table[arpindex].mac_addr, + dst_ip, NES_ARP_DELETE); + } + nes_manage_arp_cache(nesvnic->netdev, neigh->ha, dst_ip, NES_ARP_ADD); rc = nes_arp_table(nesvnic->nesdev, dst_ip, NULL, NES_ARP_RESOLVE); + } else { + neigh_event_send(neigh, NULL); } - neigh_release(neigh); } +out: + rcu_read_unlock(); - if ((neigh == NULL) || (!(neigh->nud_state & NUD_VALID))) - neigh_event_send(rt->u.dst.neighbour, NULL); + if (neigh) + neigh_release(neigh); ip_rt_put(rt); return rc; } - /** * make_cm_node - create a new instance of a cm node */ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, - struct nes_vnic *nesvnic, struct nes_cm_info *cm_info, - struct nes_cm_listener *listener) + struct nes_vnic *nesvnic, struct nes_cm_info *cm_info, + struct nes_cm_listener *listener) { struct nes_cm_node *cm_node; struct timespec ts; + int oldarpindex = 0; int arpindex = 0; struct nes_device *nesdev; struct nes_adapter *nesadapter; @@ -1044,7 +1570,18 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, cm_node->rem_addr = cm_info->rem_addr; cm_node->loc_port = cm_info->loc_port; cm_node->rem_port = cm_info->rem_port; - cm_node->send_write0 = send_first; + + cm_node->mapped_loc_addr = cm_info->mapped_loc_addr; + cm_node->mapped_rem_addr = cm_info->mapped_rem_addr; + cm_node->mapped_loc_port = cm_info->mapped_loc_port; + cm_node->mapped_rem_port = cm_info->mapped_rem_port; + + cm_node->mpa_frame_rev = mpa_version; + cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; + cm_node->mpav2_ird_ord = 0; + cm_node->ird_size = 0; + cm_node->ord_size = 0; + nes_debug(NES_DBG_CM, "Make node addresses : loc = %pI4:%x, rem = %pI4:%x\n", &cm_node->loc_addr, cm_node->loc_port, &cm_node->rem_addr, cm_node->rem_port); @@ -1054,11 +1591,9 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN); nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener, - cm_node->cm_id); + cm_node->cm_id); spin_lock_init(&cm_node->retrans_list_lock); - INIT_LIST_HEAD(&cm_node->recv_list); - spin_lock_init(&cm_node->recv_list_lock); cm_node->loopbackpartner = NULL; atomic_set(&cm_node->ref_count, 1); @@ -1067,11 +1602,11 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, cm_node->tcp_cntxt.loc_id = NES_CM_DEF_LOCAL_ID; cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; cm_node->tcp_cntxt.rcv_wnd = NES_CM_DEFAULT_RCV_WND_SCALED >> - NES_CM_DEFAULT_RCV_WND_SCALE; + NES_CM_DEFAULT_RCV_WND_SCALE; ts = current_kernel_time(); cm_node->tcp_cntxt.loc_seq_num = htonl(ts.tv_nsec); cm_node->tcp_cntxt.mss = nesvnic->max_frame_size - sizeof(struct iphdr) - - sizeof(struct tcphdr) - ETH_HLEN - VLAN_HLEN; + sizeof(struct tcphdr) - ETH_HLEN - VLAN_HLEN; cm_node->tcp_cntxt.rcv_nxt = 0; /* get a unique session ID , add thread_id to an upcounter to handle race */ atomic_inc(&cm_core->node_cnt); @@ -1085,17 +1620,15 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, nesadapter = nesdev->nesadapter; cm_node->loopbackpartner = NULL; + /* get the mac addr for the remote node */ - if (ipv4_is_loopback(htonl(cm_node->rem_addr))) - arpindex = nes_arp_table(nesdev, ntohl(nesvnic->local_ipaddr), NULL, NES_ARP_RESOLVE); - else - arpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE); + oldarpindex = nes_arp_table(nesdev, cm_node->mapped_rem_addr, + NULL, NES_ARP_RESOLVE); + arpindex = nes_addr_resolve_neigh(nesvnic, + cm_node->mapped_rem_addr, oldarpindex); if (arpindex < 0) { - arpindex = nes_addr_resolve_neigh(nesvnic, cm_info->rem_addr); - if (arpindex < 0) { - kfree(cm_node); - return NULL; - } + kfree(cm_node); + return NULL; } /* copy the mac addr to node context */ @@ -1124,12 +1657,9 @@ static int add_ref_cm_node(struct nes_cm_node *cm_node) * rem_ref_cm_node - destroy an instance of a cm node */ static int rem_ref_cm_node(struct nes_cm_core *cm_core, - struct nes_cm_node *cm_node) + struct nes_cm_node *cm_node) { - unsigned long flags, qplockflags; - struct nes_timer_entry *recv_entry; - struct iw_cm_id *cm_id; - struct list_head *list_core, *list_node_temp; + unsigned long flags; struct nes_qp *nesqp; if (!cm_node) @@ -1150,47 +1680,21 @@ static int rem_ref_cm_node(struct nes_cm_core *cm_core, atomic_dec(&cm_node->listener->pend_accepts_cnt); BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); } - BUG_ON(cm_node->send_entry); - spin_lock_irqsave(&cm_node->recv_list_lock, flags); - list_for_each_safe(list_core, list_node_temp, &cm_node->recv_list) { - recv_entry = container_of(list_core, struct nes_timer_entry, - list); - list_del(&recv_entry->list); - cm_id = cm_node->cm_id; - spin_unlock_irqrestore(&cm_node->recv_list_lock, flags); - nesqp = (struct nes_qp *)recv_entry->skb; - spin_lock_irqsave(&nesqp->lock, qplockflags); - if (nesqp->cm_id) { - nes_debug(NES_DBG_CM, "QP%u: cm_id = %p: HIT A " - "NES_TIMER_TYPE_CLOSE with something to do!\n", - nesqp->hwqp.qp_id, cm_id); - nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; - nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; - nesqp->ibqp_state = IB_QPS_ERR; - spin_unlock_irqrestore(&nesqp->lock, qplockflags); - nes_cm_disconn(nesqp); - } else { - spin_unlock_irqrestore(&nesqp->lock, qplockflags); - nes_debug(NES_DBG_CM, "QP%u: cm_id = %p: HIT A " - "NES_TIMER_TYPE_CLOSE with nothing to do!\n", - nesqp->hwqp.qp_id, cm_id); - } - cm_id->rem_ref(cm_id); - - kfree(recv_entry); - spin_lock_irqsave(&cm_node->recv_list_lock, flags); - } - spin_unlock_irqrestore(&cm_node->recv_list_lock, flags); - + WARN_ON(cm_node->send_entry); + if (cm_node->recv_entry) + handle_recv_entry(cm_node, 0); if (cm_node->listener) { mini_cm_dec_refcnt_listen(cm_core, cm_node->listener, 0); } else { if (cm_node->apbvt_set && cm_node->nesvnic) { - nes_manage_apbvt(cm_node->nesvnic, cm_node->loc_port, - PCI_FUNC( - cm_node->nesvnic->nesdev->pcidev->devfn), - NES_MANAGE_APBVT_DEL); + nes_manage_apbvt(cm_node->nesvnic, cm_node->mapped_loc_port, + PCI_FUNC(cm_node->nesvnic->nesdev->pcidev->devfn), + NES_MANAGE_APBVT_DEL); } + nes_debug(NES_DBG_NLMSG, "Delete APBVT mapped_loc_port = %04X\n", + cm_node->mapped_loc_port); + nes_remove_mapinfo(cm_node->loc_addr, cm_node->loc_port, + cm_node->mapped_loc_addr, cm_node->mapped_loc_port); } atomic_dec(&cm_core->node_cnt); @@ -1202,7 +1706,6 @@ static int rem_ref_cm_node(struct nes_cm_core *cm_core, cm_node->nesqp = NULL; } - cm_node->freed = 1; kfree(cm_node); return 0; } @@ -1211,7 +1714,7 @@ static int rem_ref_cm_node(struct nes_cm_core *cm_core, * process_options */ static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, - u32 optionsize, u32 syn_packet) + u32 optionsize, u32 syn_packet) { u32 tmp; u32 offset = 0; @@ -1229,15 +1732,15 @@ static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, continue; case OPTION_NUMBER_MSS: nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d " - "Size: %d\n", __func__, - all_options->as_mss.length, offset, optionsize); + "Size: %d\n", __func__, + all_options->as_mss.length, offset, optionsize); got_mss_option = 1; if (all_options->as_mss.length != 4) { return 1; } else { tmp = ntohs(all_options->as_mss.mss); if (tmp > 0 && tmp < - cm_node->tcp_cntxt.mss) + cm_node->tcp_cntxt.mss) cm_node->tcp_cntxt.mss = tmp; } break; @@ -1245,12 +1748,9 @@ static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, cm_node->tcp_cntxt.snd_wscale = all_options->as_windowscale.shiftcount; break; - case OPTION_NUMBER_WRITE0: - cm_node->send_write0 = 1; - break; default: nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n", - all_options->as_base.optionnum); + all_options->as_base.optionnum); break; } offset += all_options->as_base.length; @@ -1266,36 +1766,55 @@ static void drop_packet(struct sk_buff *skb) dev_kfree_skb_any(skb); } -static void handle_fin_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, - struct tcphdr *tcph) +static void handle_fin_pkt(struct nes_cm_node *cm_node) { nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. " - "refcnt=%d\n", cm_node, cm_node->state, - atomic_read(&cm_node->ref_count)); - cm_node->tcp_cntxt.rcv_nxt++; - cleanup_retrans_entry(cm_node); + "refcnt=%d\n", cm_node, cm_node->state, + atomic_read(&cm_node->ref_count)); switch (cm_node->state) { case NES_CM_STATE_SYN_RCVD: case NES_CM_STATE_SYN_SENT: case NES_CM_STATE_ESTABLISHED: - case NES_CM_STATE_MPAREQ_SENT: + case NES_CM_STATE_MPAREJ_RCVD: + cm_node->tcp_cntxt.rcv_nxt++; + cleanup_retrans_entry(cm_node); cm_node->state = NES_CM_STATE_LAST_ACK; - send_fin(cm_node, skb); + send_fin(cm_node, NULL); + break; + case NES_CM_STATE_MPAREQ_SENT: + create_event(cm_node, NES_CM_EVENT_ABORTED); + cm_node->tcp_cntxt.rcv_nxt++; + cleanup_retrans_entry(cm_node); + cm_node->state = NES_CM_STATE_CLOSED; + add_ref_cm_node(cm_node); + send_reset(cm_node, NULL); break; case NES_CM_STATE_FIN_WAIT1: + cm_node->tcp_cntxt.rcv_nxt++; + cleanup_retrans_entry(cm_node); cm_node->state = NES_CM_STATE_CLOSING; - send_ack(cm_node, skb); + send_ack(cm_node, NULL); + /* Wait for ACK as this is simultaneous close.. + * After we receive ACK, do not send anything.. + * Just rm the node.. Done.. */ break; case NES_CM_STATE_FIN_WAIT2: + cm_node->tcp_cntxt.rcv_nxt++; + cleanup_retrans_entry(cm_node); cm_node->state = NES_CM_STATE_TIME_WAIT; - send_ack(cm_node, skb); + send_ack(cm_node, NULL); + schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0); + break; + case NES_CM_STATE_TIME_WAIT: + cm_node->tcp_cntxt.rcv_nxt++; + cleanup_retrans_entry(cm_node); cm_node->state = NES_CM_STATE_CLOSED; + rem_ref_cm_node(cm_node->cm_core, cm_node); break; case NES_CM_STATE_TSA: default: nes_debug(NES_DBG_CM, "Error Rcvd FIN for node-%p state = %d\n", cm_node, cm_node->state); - drop_packet(skb); break; } } @@ -1306,7 +1825,6 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, { int reset = 0; /* whether to send reset in case of err.. */ - int passive_state; atomic_inc(&cm_resets_recvd); nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." " refcnt=%d\n", cm_node, cm_node->state, @@ -1318,14 +1836,23 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " "listener=%p state=%d\n", __func__, __LINE__, cm_node, cm_node->listener, cm_node->state); - active_open_err(cm_node, skb, reset); + switch (cm_node->mpa_frame_rev) { + case IETF_MPA_V2: + cm_node->mpa_frame_rev = IETF_MPA_V1; + /* send a syn and goto syn sent state */ + cm_node->state = NES_CM_STATE_SYN_SENT; + if (send_syn(cm_node, 0, NULL)) { + active_open_err(cm_node, skb, reset); + } + break; + case IETF_MPA_V1: + default: + active_open_err(cm_node, skb, reset); + break; + } break; case NES_CM_STATE_MPAREQ_RCVD: - passive_state = atomic_add_return(1, &cm_node->passive_state); - if (passive_state == NES_SEND_RESET_EVENT) - create_event(cm_node, NES_CM_EVENT_RESET); - cleanup_retrans_entry(cm_node); - cm_node->state = NES_CM_STATE_CLOSED; + atomic_inc(&cm_node->passive_state); dev_kfree_skb_any(skb); break; case NES_CM_STATE_ESTABLISHED: @@ -1338,7 +1865,15 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, active_open_err(cm_node, skb, reset); break; case NES_CM_STATE_CLOSED: - cleanup_retrans_entry(cm_node); + drop_packet(skb); + break; + case NES_CM_STATE_FIN_WAIT2: + case NES_CM_STATE_FIN_WAIT1: + case NES_CM_STATE_LAST_ACK: + cm_node->cm_id->rem_ref(cm_node->cm_id); + case NES_CM_STATE_TIME_WAIT: + cm_node->state = NES_CM_STATE_CLOSED; + rem_ref_cm_node(cm_node->cm_core, cm_node); drop_packet(skb); break; default: @@ -1347,37 +1882,60 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, } } -static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb, - enum nes_cm_event_type type) -{ - int ret; +static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb) +{ + int ret = 0; int datasize = skb->len; u8 *dataloc = skb->data; - ret = parse_mpa(cm_node, dataloc, datasize); - if (ret < 0) { + + enum nes_cm_event_type type = NES_CM_EVENT_UNKNOWN; + u32 res_type; + + ret = parse_mpa(cm_node, dataloc, &res_type, datasize); + if (ret) { nes_debug(NES_DBG_CM, "didn't like MPA Request\n"); - if (type == NES_CM_EVENT_CONNECTED) { + if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) { nes_debug(NES_DBG_CM, "%s[%u] create abort for " - "cm_node=%p listener=%p state=%d\n", __func__, - __LINE__, cm_node, cm_node->listener, - cm_node->state); + "cm_node=%p listener=%p state=%d\n", __func__, + __LINE__, cm_node, cm_node->listener, + cm_node->state); active_open_err(cm_node, skb, 1); } else { passive_open_err(cm_node, skb, 1); } - } else { + return; + } + + switch (cm_node->state) { + case NES_CM_STATE_ESTABLISHED: + if (res_type == NES_MPA_REQUEST_REJECT) + /*BIG problem as we are receiving the MPA.. So should + * not be REJECT.. This is Passive Open.. We can + * only receive it Reject for Active Open...*/ + WARN_ON(1); + cm_node->state = NES_CM_STATE_MPAREQ_RCVD; + type = NES_CM_EVENT_MPA_REQ; + atomic_set(&cm_node->passive_state, + NES_PASSIVE_STATE_INDICATED); + break; + case NES_CM_STATE_MPAREQ_SENT: cleanup_retrans_entry(cm_node); - dev_kfree_skb_any(skb); - if (type == NES_CM_EVENT_CONNECTED) + if (res_type == NES_MPA_REQUEST_REJECT) { + type = NES_CM_EVENT_MPA_REJECT; + cm_node->state = NES_CM_STATE_MPAREJ_RCVD; + } else { + type = NES_CM_EVENT_CONNECTED; cm_node->state = NES_CM_STATE_TSA; - else - atomic_set(&cm_node->passive_state, - NES_PASSIVE_STATE_INDICATED); - create_event(cm_node, type); + } + break; + default: + WARN_ON(1); + break; } - return ; + dev_kfree_skb_any(skb); + create_event(cm_node, type); } static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb) @@ -1386,8 +1944,8 @@ static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb) case NES_CM_STATE_SYN_SENT: case NES_CM_STATE_MPAREQ_SENT: nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " - "listener=%p state=%d\n", __func__, __LINE__, cm_node, - cm_node->listener, cm_node->state); + "listener=%p state=%d\n", __func__, __LINE__, cm_node, + cm_node->listener, cm_node->state); active_open_err(cm_node, skb, 1); break; case NES_CM_STATE_ESTABLISHED: @@ -1401,11 +1959,11 @@ static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb) } static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph, - struct sk_buff *skb) + struct sk_buff *skb) { int err; - err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num))? 0 : 1; + err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num)) ? 0 : 1; if (err) active_open_err(cm_node, skb, 1); @@ -1413,7 +1971,7 @@ static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph, } static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph, - struct sk_buff *skb) + struct sk_buff *skb) { int err = 0; u32 seq; @@ -1421,21 +1979,22 @@ static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph, u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num; u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt; u32 rcv_wnd; + seq = ntohl(tcph->seq); ack_seq = ntohl(tcph->ack_seq); rcv_wnd = cm_node->tcp_cntxt.rcv_wnd; if (ack_seq != loc_seq_num) err = 1; - else if ((seq + rcv_wnd) < rcv_nxt) + else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd))) err = 1; if (err) { nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " - "listener=%p state=%d\n", __func__, __LINE__, cm_node, - cm_node->listener, cm_node->state); + "listener=%p state=%d\n", __func__, __LINE__, cm_node, + cm_node->listener, cm_node->state); indicate_pkt_err(cm_node, skb); nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X " - "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt, - rcv_wnd); + "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt, + rcv_wnd); } return err; } @@ -1445,9 +2004,8 @@ static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph, * is created with a listener or it may comein as rexmitted packet which in * that case will be just dropped. */ - static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, - struct tcphdr *tcph) + struct tcphdr *tcph) { int ret; u32 inc_sequence; @@ -1465,18 +2023,16 @@ static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, break; case NES_CM_STATE_LISTENING: /* Passive OPEN */ - cm_node->accept_pend = 1; - atomic_inc(&cm_node->listener->pend_accepts_cnt); if (atomic_read(&cm_node->listener->pend_accepts_cnt) > - cm_node->listener->backlog) { + cm_node->listener->backlog) { nes_debug(NES_DBG_CM, "drop syn due to backlog " - "pressure \n"); + "pressure \n"); cm_backlog_drops++; passive_open_err(cm_node, skb, 0); break; } ret = handle_tcp_options(cm_node, tcph, skb, optionsize, - 1); + 1); if (ret) { passive_open_err(cm_node, skb, 0); /* drop pkt */ @@ -1484,11 +2040,15 @@ static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, } cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; BUG_ON(cm_node->send_entry); + cm_node->accept_pend = 1; + atomic_inc(&cm_node->listener->pend_accepts_cnt); + cm_node->state = NES_CM_STATE_SYN_RCVD; send_syn(cm_node, 1, skb); break; case NES_CM_STATE_CLOSED: cleanup_retrans_entry(cm_node); + add_ref_cm_node(cm_node); send_reset(cm_node, skb); break; case NES_CM_STATE_TSA: @@ -1506,9 +2066,8 @@ static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, } static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, - struct tcphdr *tcph) + struct tcphdr *tcph) { - int ret; u32 inc_sequence; int optionsize; @@ -1518,6 +2077,7 @@ static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, inc_sequence = ntohl(tcph->seq); switch (cm_node->state) { case NES_CM_STATE_SYN_SENT: + cleanup_retrans_entry(cm_node); /* active open */ if (check_syn(cm_node, tcph, skb)) return; @@ -1526,7 +2086,7 @@ static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0); if (ret) { nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n", - cm_node); + cm_node); break; } cleanup_retrans_entry(cm_node); @@ -1539,9 +2099,15 @@ static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, passive_open_err(cm_node, skb, 1); break; case NES_CM_STATE_LISTENING: + cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); + cleanup_retrans_entry(cm_node); + cm_node->state = NES_CM_STATE_CLOSED; + send_reset(cm_node, skb); + break; case NES_CM_STATE_CLOSED: cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); cleanup_retrans_entry(cm_node); + add_ref_cm_node(cm_node); send_reset(cm_node, skb); break; case NES_CM_STATE_ESTABLISHED: @@ -1558,105 +2124,105 @@ static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, } } -static void handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, - struct tcphdr *tcph) +static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, + struct tcphdr *tcph) { int datasize = 0; u32 inc_sequence; - u32 rem_seq_ack; - u32 rem_seq; - int ret; + int ret = 0; int optionsize; - u32 temp_seq = cm_node->tcp_cntxt.loc_seq_num; optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); - cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); if (check_seq(cm_node, tcph, skb)) - return; + return -EINVAL; skb_pull(skb, tcph->doff << 2); inc_sequence = ntohl(tcph->seq); - rem_seq = ntohl(tcph->seq); - rem_seq_ack = ntohl(tcph->ack_seq); datasize = skb->len; - switch (cm_node->state) { case NES_CM_STATE_SYN_RCVD: /* Passive OPEN */ + cleanup_retrans_entry(cm_node); ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1); if (ret) break; cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); - cm_node->tcp_cntxt.loc_seq_num = temp_seq; - if (cm_node->tcp_cntxt.rem_ack_num != - cm_node->tcp_cntxt.loc_seq_num) { - nes_debug(NES_DBG_CM, "rem_ack_num != loc_seq_num\n"); - cleanup_retrans_entry(cm_node); - send_reset(cm_node, skb); - return; - } cm_node->state = NES_CM_STATE_ESTABLISHED; if (datasize) { cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; - cm_node->state = NES_CM_STATE_MPAREQ_RCVD; - handle_rcv_mpa(cm_node, skb, NES_CM_EVENT_MPA_REQ); - } else { /* rcvd ACK only */ + handle_rcv_mpa(cm_node, skb); + } else { /* rcvd ACK only */ dev_kfree_skb_any(skb); - cleanup_retrans_entry(cm_node); - } + } break; case NES_CM_STATE_ESTABLISHED: /* Passive OPEN */ - /* We expect mpa frame to be received only */ + cleanup_retrans_entry(cm_node); if (datasize) { cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; - cm_node->state = NES_CM_STATE_MPAREQ_RCVD; - handle_rcv_mpa(cm_node, skb, - NES_CM_EVENT_MPA_REQ); - } else + handle_rcv_mpa(cm_node, skb); + } else { drop_packet(skb); + } break; case NES_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; - handle_rcv_mpa(cm_node, skb, NES_CM_EVENT_CONNECTED); + handle_rcv_mpa(cm_node, skb); } else { /* Could be just an ack pkt.. */ - cleanup_retrans_entry(cm_node); dev_kfree_skb_any(skb); } break; case NES_CM_STATE_LISTENING: + cleanup_retrans_entry(cm_node); + cm_node->state = NES_CM_STATE_CLOSED; + send_reset(cm_node, skb); + break; case NES_CM_STATE_CLOSED: cleanup_retrans_entry(cm_node); + add_ref_cm_node(cm_node); send_reset(cm_node, skb); break; + case NES_CM_STATE_LAST_ACK: + case NES_CM_STATE_CLOSING: + cleanup_retrans_entry(cm_node); + cm_node->state = NES_CM_STATE_CLOSED; + cm_node->cm_id->rem_ref(cm_node->cm_id); + rem_ref_cm_node(cm_node->cm_core, cm_node); + drop_packet(skb); + break; case NES_CM_STATE_FIN_WAIT1: + cleanup_retrans_entry(cm_node); + drop_packet(skb); + cm_node->state = NES_CM_STATE_FIN_WAIT2; + break; case NES_CM_STATE_SYN_SENT: case NES_CM_STATE_FIN_WAIT2: case NES_CM_STATE_TSA: case NES_CM_STATE_MPAREQ_RCVD: - case NES_CM_STATE_LAST_ACK: - case NES_CM_STATE_CLOSING: case NES_CM_STATE_UNKNOWN: default: + cleanup_retrans_entry(cm_node); drop_packet(skb); break; } + return ret; } static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, - struct sk_buff *skb, int optionsize, int passive) + struct sk_buff *skb, int optionsize, int passive) { u8 *optionsloc = (u8 *)&tcph[1]; + if (optionsize) { if (process_options(cm_node, optionsloc, optionsize, - (u32)tcph->syn)) { + (u32)tcph->syn)) { nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n", - __func__, cm_node); + __func__, cm_node); if (passive) passive_open_err(cm_node, skb, 1); else @@ -1666,7 +2232,7 @@ static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, } cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) << - cm_node->tcp_cntxt.snd_wscale; + 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; @@ -1677,18 +2243,18 @@ static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, * active_open_err() will send reset() if flag set.. * It will also send ABORT event. */ - static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, - int reset) + int reset) { cleanup_retrans_entry(cm_node); if (reset) { nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, " - "state=%d\n", cm_node, cm_node->state); + "state=%d\n", cm_node, cm_node->state); add_ref_cm_node(cm_node); send_reset(cm_node, skb); - } else + } else { dev_kfree_skb_any(skb); + } cm_node->state = NES_CM_STATE_CLOSED; create_event(cm_node, NES_CM_EVENT_ABORTED); @@ -1698,15 +2264,14 @@ static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, * passive_open_err() will either do a reset() or will free up the skb and * remove the cm_node. */ - static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, - int reset) + int reset) { cleanup_retrans_entry(cm_node); cm_node->state = NES_CM_STATE_CLOSED; if (reset) { nes_debug(NES_DBG_CM, "passive_open_err sending RST for " - "cm_node=%p state =%d\n", cm_node, cm_node->state); + "cm_node=%p state =%d\n", cm_node, cm_node->state); send_reset(cm_node, skb); } else { dev_kfree_skb_any(skb); @@ -1721,6 +2286,7 @@ static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, static void free_retrans_entry(struct nes_cm_node *cm_node) { struct nes_timer_entry *send_entry; + send_entry = cm_node->send_entry; if (send_entry) { cm_node->send_entry = NULL; @@ -1744,26 +2310,30 @@ static void cleanup_retrans_entry(struct nes_cm_node *cm_node) * Returns skb if to be freed, else it will return NULL if already used.. */ static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb, - struct nes_cm_core *cm_core) + struct nes_cm_core *cm_core) { - enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN; + enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN; struct tcphdr *tcph = tcp_hdr(skb); + u32 fin_set = 0; + int ret = 0; + skb_pull(skb, ip_hdr(skb)->ihl << 2); nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d " - "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn, - tcph->ack, tcph->rst, tcph->fin); + "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn, + tcph->ack, tcph->rst, tcph->fin); - if (tcph->rst) + if (tcph->rst) { pkt_type = NES_PKT_TYPE_RST; - else if (tcph->syn) { + } else if (tcph->syn) { pkt_type = NES_PKT_TYPE_SYN; if (tcph->ack) pkt_type = NES_PKT_TYPE_SYNACK; - } else if (tcph->fin) - pkt_type = NES_PKT_TYPE_FIN; - else if (tcph->ack) + } else if (tcph->ack) { pkt_type = NES_PKT_TYPE_ACK; + } + if (tcph->fin) + fin_set = 1; switch (pkt_type) { case NES_PKT_TYPE_SYN: @@ -1773,15 +2343,16 @@ static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb, handle_synack_pkt(cm_node, skb, tcph); break; case NES_PKT_TYPE_ACK: - handle_ack_pkt(cm_node, skb, tcph); + ret = handle_ack_pkt(cm_node, skb, tcph); + if (fin_set && !ret) + handle_fin_pkt(cm_node); break; case NES_PKT_TYPE_RST: handle_rst_pkt(cm_node, skb, tcph); break; - case NES_PKT_TYPE_FIN: - handle_fin_pkt(cm_node, skb, tcph); - break; default: + if ((fin_set) && (!check_seq(cm_node, tcph, skb))) + handle_fin_pkt(cm_node); drop_packet(skb); break; } @@ -1791,17 +2362,21 @@ static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb, * mini_cm_listen - create a listen node with params */ static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, - struct nes_vnic *nesvnic, struct nes_cm_info *cm_info) + struct nes_vnic *nesvnic, struct nes_cm_info *cm_info) { struct nes_cm_listener *listener; + struct iwpm_dev_data pm_reg_msg; + struct iwpm_sa_data pm_msg; unsigned long flags; + int iwpm_err = 0; nes_debug(NES_DBG_CM, "Search for 0x%08x : 0x%04x\n", - cm_info->loc_addr, cm_info->loc_port); + cm_info->loc_addr, cm_info->loc_port); /* cannot have multiple matching listeners */ - listener = find_listener(cm_core, htonl(cm_info->loc_addr), - htons(cm_info->loc_port), NES_CM_LISTENER_EITHER_STATE); + listener = find_listener(cm_core, cm_info->loc_addr, cm_info->loc_port, + NES_CM_LISTENER_EITHER_STATE, 1); + if (listener && listener->listener_state == NES_CM_LISTENER_ACTIVE_STATE) { /* find automatically incs ref count ??? */ atomic_dec(&listener->ref_count); @@ -1810,6 +2385,22 @@ static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, } if (!listener) { + nes_form_reg_msg(nesvnic, &pm_reg_msg); + iwpm_err = iwpm_register_pid(&pm_reg_msg, RDMA_NL_NES); + if (iwpm_err) { + nes_debug(NES_DBG_NLMSG, + "Port Mapper reg pid fail (err = %d).\n", iwpm_err); + } + if (iwpm_valid_pid() && !iwpm_err) { + nes_form_pm_msg(cm_info, &pm_msg); + iwpm_err = iwpm_add_mapping(&pm_msg, RDMA_NL_NES); + if (iwpm_err) + nes_debug(NES_DBG_NLMSG, + "Port Mapper query fail (err = %d).\n", iwpm_err); + else + nes_record_pm_msg(cm_info, &pm_msg); + } + /* create a CM listen node (1/2 node to compare incoming traffic to) */ listener = kzalloc(sizeof(*listener), GFP_ATOMIC); if (!listener) { @@ -1817,8 +2408,10 @@ static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, return NULL; } - listener->loc_addr = htonl(cm_info->loc_addr); - listener->loc_port = htons(cm_info->loc_port); + listener->loc_addr = cm_info->loc_addr; + listener->loc_port = cm_info->loc_port; + listener->mapped_loc_addr = cm_info->mapped_loc_addr; + listener->mapped_loc_port = cm_info->mapped_loc_port; listener->reused_node = 0; atomic_set(&listener->ref_count, 1); @@ -1847,9 +2440,9 @@ static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, } nes_debug(NES_DBG_CM, "Api - listen(): addr=0x%08X, port=0x%04x," - " listener = %p, backlog = %d, cm_id = %p.\n", - cm_info->loc_addr, cm_info->loc_port, - listener, listener->backlog, listener->cm_id); + " listener = %p, backlog = %d, cm_id = %p.\n", + cm_info->loc_addr, cm_info->loc_port, + listener, listener->backlog, listener->cm_id); return listener; } @@ -1859,26 +2452,20 @@ static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, * mini_cm_connect - make a connection node with params */ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, - struct nes_vnic *nesvnic, u16 private_data_len, - void *private_data, struct nes_cm_info *cm_info) + struct nes_vnic *nesvnic, u16 private_data_len, + void *private_data, struct nes_cm_info *cm_info) { int ret = 0; struct nes_cm_node *cm_node; struct nes_cm_listener *loopbackremotelistener; struct nes_cm_node *loopbackremotenode; struct nes_cm_info loopback_cm_info; - u16 mpa_frame_size = sizeof(struct ietf_mpa_frame) + private_data_len; - struct ietf_mpa_frame *mpa_frame = NULL; + u8 *start_buff; /* create a CM connection node */ cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL); if (!cm_node) return NULL; - mpa_frame = &cm_node->mpa_frame; - strcpy(mpa_frame->key, IEFT_MPA_KEY_REQ); - mpa_frame->flags = IETF_MPA_FLAGS_CRC; - mpa_frame->rev = IETF_MPA_VERSION; - mpa_frame->priv_data_len = htons(private_data_len); /* set our node side to client (active) side */ cm_node->tcp_cntxt.client = 1; @@ -1886,24 +2473,32 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, if (cm_info->loc_addr == cm_info->rem_addr) { loopbackremotelistener = find_listener(cm_core, - ntohl(nesvnic->local_ipaddr), cm_node->rem_port, - NES_CM_LISTENER_ACTIVE_STATE); + cm_node->mapped_loc_addr, cm_node->mapped_rem_port, + NES_CM_LISTENER_ACTIVE_STATE, 0); if (loopbackremotelistener == NULL) { create_event(cm_node, NES_CM_EVENT_ABORTED); } else { - atomic_inc(&cm_loopbacks); loopback_cm_info = *cm_info; loopback_cm_info.loc_port = cm_info->rem_port; loopback_cm_info.rem_port = cm_info->loc_port; + loopback_cm_info.mapped_loc_port = + cm_info->mapped_rem_port; + loopback_cm_info.mapped_rem_port = + cm_info->mapped_loc_port; loopback_cm_info.cm_id = loopbackremotelistener->cm_id; loopbackremotenode = make_cm_node(cm_core, nesvnic, - &loopback_cm_info, loopbackremotelistener); + &loopback_cm_info, loopbackremotelistener); + if (!loopbackremotenode) { + rem_ref_cm_node(cm_node->cm_core, cm_node); + return NULL; + } + atomic_inc(&cm_loopbacks); loopbackremotenode->loopbackpartner = cm_node; loopbackremotenode->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; cm_node->loopbackpartner = loopbackremotenode; memcpy(loopbackremotenode->mpa_frame_buf, private_data, - private_data_len); + private_data_len); loopbackremotenode->mpa_frame_size = private_data_len; /* we are done handling this state. */ @@ -1925,18 +2520,16 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, loopbackremotenode->tcp_cntxt.rcv_wscale; loopbackremotenode->tcp_cntxt.snd_wscale = cm_node->tcp_cntxt.rcv_wscale; - + loopbackremotenode->state = NES_CM_STATE_MPAREQ_RCVD; create_event(loopbackremotenode, NES_CM_EVENT_MPA_REQ); } return cm_node; } - /* set our node side to client (active) side */ - cm_node->tcp_cntxt.client = 1; - /* init our MPA frame ptr */ - memcpy(mpa_frame->priv_data, private_data, private_data_len); + start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); + cm_node->mpa_frame_size = private_data_len; - cm_node->mpa_frame_size = mpa_frame_size; + memcpy(start_buff, private_data, private_data_len); /* send a syn and goto syn sent state */ cm_node->state = NES_CM_STATE_SYN_SENT; @@ -1945,18 +2538,19 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, if (ret) { /* error in sending the syn free up the cm_node struct */ nes_debug(NES_DBG_CM, "Api - connect() FAILED: dest " - "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n", - cm_node->rem_addr, cm_node->rem_port, cm_node, - cm_node->cm_id); + "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n", + cm_node->rem_addr, cm_node->rem_port, cm_node, + cm_node->cm_id); rem_ref_cm_node(cm_node->cm_core, cm_node); cm_node = NULL; } - if (cm_node) + if (cm_node) { nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X," - "port=0x%04x, cm_node=%p, cm_id = %p.\n", - cm_node->rem_addr, cm_node->rem_port, cm_node, - cm_node->cm_id); + "port=0x%04x, cm_node=%p, cm_id = %p.\n", + cm_node->rem_addr, cm_node->rem_port, cm_node, + cm_node->cm_id); + } return cm_node; } @@ -1966,8 +2560,7 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, * mini_cm_accept - accept a connection * This function is never called */ -static int mini_cm_accept(struct nes_cm_core *cm_core, - struct ietf_mpa_frame *mpa_frame, struct nes_cm_node *cm_node) +static int mini_cm_accept(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) { return 0; } @@ -1976,25 +2569,64 @@ static int mini_cm_accept(struct nes_cm_core *cm_core, /** * mini_cm_reject - reject and teardown a connection */ -static int mini_cm_reject(struct nes_cm_core *cm_core, - struct ietf_mpa_frame *mpa_frame, struct nes_cm_node *cm_node) +static int mini_cm_reject(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) { int ret = 0; + int err = 0; int passive_state; + struct nes_cm_event event; + struct iw_cm_id *cm_id = cm_node->cm_id; + struct nes_cm_node *loopback = cm_node->loopbackpartner; nes_debug(NES_DBG_CM, "%s cm_node=%p type=%d state=%d\n", - __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state); + __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state); if (cm_node->tcp_cntxt.client) return ret; cleanup_retrans_entry(cm_node); - passive_state = atomic_add_return(1, &cm_node->passive_state); - cm_node->state = NES_CM_STATE_CLOSED; - if (passive_state == NES_SEND_RESET_EVENT) - rem_ref_cm_node(cm_core, cm_node); - else - ret = send_reset(cm_node, NULL); + if (!loopback) { + passive_state = atomic_add_return(1, &cm_node->passive_state); + if (passive_state == NES_SEND_RESET_EVENT) { + cm_node->state = NES_CM_STATE_CLOSED; + rem_ref_cm_node(cm_core, cm_node); + } else { + if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { + rem_ref_cm_node(cm_core, cm_node); + } else { + ret = send_mpa_reject(cm_node); + if (ret) { + cm_node->state = NES_CM_STATE_CLOSED; + err = send_reset(cm_node, NULL); + if (err) + WARN_ON(1); + } else { + cm_id->add_ref(cm_id); + } + } + } + } else { + cm_node->cm_id = NULL; + if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { + rem_ref_cm_node(cm_core, cm_node); + rem_ref_cm_node(cm_core, loopback); + } else { + event.cm_node = loopback; + event.cm_info.rem_addr = loopback->rem_addr; + event.cm_info.loc_addr = loopback->loc_addr; + event.cm_info.rem_port = loopback->rem_port; + event.cm_info.loc_port = loopback->loc_port; + event.cm_info.cm_id = loopback->cm_id; + cm_event_mpa_reject(&event); + rem_ref_cm_node(cm_core, cm_node); + loopback->state = NES_CM_STATE_CLOSING; + + cm_id = loopback->cm_id; + rem_ref_cm_node(cm_core, loopback); + cm_id->rem_ref(cm_id); + } + } + return ret; } @@ -2032,15 +2664,20 @@ static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_nod ret = -1; break; case NES_CM_STATE_LISTENING: + cleanup_retrans_entry(cm_node); + send_reset(cm_node, NULL); + break; + case NES_CM_STATE_MPAREJ_RCVD: case NES_CM_STATE_UNKNOWN: case NES_CM_STATE_INITED: case NES_CM_STATE_CLOSED: + case NES_CM_STATE_LISTENER_DESTROYED: ret = rem_ref_cm_node(cm_core, cm_node); break; case NES_CM_STATE_TSA: if (cm_node->send_entry) printk(KERN_ERR "ERROR Close got called from STATE_TSA " - "send_entry=%p\n", cm_node->send_entry); + "send_entry=%p\n", cm_node->send_entry); ret = rem_ref_cm_node(cm_core, cm_node); break; } @@ -2053,7 +2690,7 @@ static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_nod * node state machine */ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, - struct nes_vnic *nesvnic, struct sk_buff *skb) + struct nes_vnic *nesvnic, struct sk_buff *skb) { struct nes_cm_node *cm_node = NULL; struct nes_cm_listener *listener = NULL; @@ -2065,9 +2702,8 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, if (!skb) return 0; - if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) { + if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) return 0; - } iph = (struct iphdr *)skb->data; tcph = (struct tcphdr *)(skb->data + sizeof(struct iphdr)); @@ -2077,6 +2713,12 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, nfo.rem_addr = ntohl(iph->saddr); nfo.rem_port = ntohs(tcph->source); + /* If port mapper is available these should be mapped address info */ + nfo.mapped_loc_addr = ntohl(iph->daddr); + nfo.mapped_loc_port = ntohs(tcph->dest); + nfo.mapped_rem_addr = ntohl(iph->saddr); + nfo.mapped_rem_port = ntohs(tcph->source); + tmp_daddr = cpu_to_be32(iph->daddr); tmp_saddr = cpu_to_be32(iph->saddr); @@ -2085,8 +2727,8 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, do { cm_node = find_node(cm_core, - nfo.rem_port, nfo.rem_addr, - nfo.loc_port, nfo.loc_addr); + nfo.mapped_rem_port, nfo.mapped_rem_addr, + nfo.mapped_loc_port, nfo.mapped_loc_addr); if (!cm_node) { /* Only type of packet accepted are for */ @@ -2095,9 +2737,9 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, skb_handled = 0; break; } - listener = find_listener(cm_core, nfo.loc_addr, - nfo.loc_port, - NES_CM_LISTENER_ACTIVE_STATE); + listener = find_listener(cm_core, nfo.mapped_loc_addr, + nfo.mapped_loc_port, + NES_CM_LISTENER_ACTIVE_STATE, 0); if (!listener) { nfo.cm_id = NULL; nfo.conn_type = 0; @@ -2108,10 +2750,10 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, nfo.cm_id = listener->cm_id; nfo.conn_type = listener->conn_type; cm_node = make_cm_node(cm_core, nesvnic, &nfo, - listener); + listener); if (!cm_node) { nes_debug(NES_DBG_CM, "Unable to allocate " - "node\n"); + "node\n"); cm_packets_dropped++; atomic_dec(&listener->ref_count); dev_kfree_skb_any(skb); @@ -2127,9 +2769,13 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, } add_ref_cm_node(cm_node); } else if (cm_node->state == NES_CM_STATE_TSA) { - rem_ref_cm_node(cm_core, cm_node); - atomic_inc(&cm_accel_dropped_pkts); - dev_kfree_skb_any(skb); + if (cm_node->nesqp->pau_mode) + nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp); + else { + rem_ref_cm_node(cm_core, cm_node); + atomic_inc(&cm_accel_dropped_pkts); + dev_kfree_skb_any(skb); + } break; } skb_reset_network_header(skb); @@ -2159,7 +2805,7 @@ static struct nes_cm_core *nes_cm_alloc_core(void) init_timer(&cm_core->tcp_timer); cm_core->tcp_timer.function = nes_cm_timer_tick; - cm_core->mtu = NES_CM_DEFAULT_MTU; + cm_core->mtu = NES_CM_DEFAULT_MTU; cm_core->state = NES_CM_STATE_INITED; cm_core->free_tx_pkt_max = NES_CM_DEFAULT_FREE_PKTS; @@ -2197,9 +2843,8 @@ static int mini_cm_dealloc_core(struct nes_cm_core *cm_core) barrier(); - if (timer_pending(&cm_core->tcp_timer)) { + if (timer_pending(&cm_core->tcp_timer)) del_timer(&cm_core->tcp_timer); - } destroy_workqueue(cm_core->event_wq); destroy_workqueue(cm_core->disconn_wq); @@ -2227,15 +2872,15 @@ static int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value) int ret = 0; switch (type) { - case NES_CM_SET_PKT_SIZE: - cm_core->mtu = value; - break; - case NES_CM_SET_FREE_PKT_Q_SIZE: - cm_core->free_tx_pkt_max = value; - break; - default: - /* unknown set option */ - ret = -EINVAL; + case NES_CM_SET_PKT_SIZE: + cm_core->mtu = value; + break; + case NES_CM_SET_FREE_PKT_Q_SIZE: + cm_core->free_tx_pkt_max = value; + break; + default: + /* unknown set option */ + ret = -EINVAL; } return ret; @@ -2254,8 +2899,8 @@ static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_nod return -EINVAL; nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_IPV4 | - NES_QPCONTEXT_MISC_NO_NAGLE | NES_QPCONTEXT_MISC_DO_NOT_FRAG | - NES_QPCONTEXT_MISC_DROS); + NES_QPCONTEXT_MISC_NO_NAGLE | NES_QPCONTEXT_MISC_DO_NOT_FRAG | + NES_QPCONTEXT_MISC_DROS); if (cm_node->tcp_cntxt.snd_wscale || cm_node->tcp_cntxt.rcv_wscale) nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WSCALE); @@ -2265,15 +2910,15 @@ static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_nod nesqp->nesqp_context->mss |= cpu_to_le32(((u32)cm_node->tcp_cntxt.mss) << 16); nesqp->nesqp_context->tcp_state_flow_label |= cpu_to_le32( - (u32)NES_QPCONTEXT_TCPSTATE_EST << NES_QPCONTEXT_TCPFLOW_TCP_STATE_SHIFT); + (u32)NES_QPCONTEXT_TCPSTATE_EST << NES_QPCONTEXT_TCPFLOW_TCP_STATE_SHIFT); nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( - (cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) & - NES_QPCONTEXT_PDWSCALE_SND_WSCALE_MASK); + (cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) & + NES_QPCONTEXT_PDWSCALE_SND_WSCALE_MASK); nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( - (cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) & - NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_MASK); + (cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) & + NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_MASK); nesqp->nesqp_context->keepalive = cpu_to_le32(0x80); nesqp->nesqp_context->ts_recent = 0; @@ -2282,24 +2927,24 @@ static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_nod nesqp->nesqp_context->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd); nesqp->nesqp_context->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); nesqp->nesqp_context->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd << - cm_node->tcp_cntxt.rcv_wscale); + cm_node->tcp_cntxt.rcv_wscale); nesqp->nesqp_context->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); nesqp->nesqp_context->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); nesqp->nesqp_context->srtt = 0; nesqp->nesqp_context->rttvar = cpu_to_le32(0x6); nesqp->nesqp_context->ssthresh = cpu_to_le32(0x3FFFC000); - nesqp->nesqp_context->cwnd = cpu_to_le32(2*cm_node->tcp_cntxt.mss); + nesqp->nesqp_context->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss); nesqp->nesqp_context->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); nesqp->nesqp_context->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); nesqp->nesqp_context->max_snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd); nes_debug(NES_DBG_CM, "QP%u: rcv_nxt = 0x%08X, snd_nxt = 0x%08X," - " Setting MSS to %u, PDWscale = 0x%08X, rcv_wnd = %u, context misc = 0x%08X.\n", - nesqp->hwqp.qp_id, le32_to_cpu(nesqp->nesqp_context->rcv_nxt), - le32_to_cpu(nesqp->nesqp_context->snd_nxt), - cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale), - le32_to_cpu(nesqp->nesqp_context->rcv_wnd), - le32_to_cpu(nesqp->nesqp_context->misc)); + " Setting MSS to %u, PDWscale = 0x%08X, rcv_wnd = %u, context misc = 0x%08X.\n", + nesqp->hwqp.qp_id, le32_to_cpu(nesqp->nesqp_context->rcv_nxt), + le32_to_cpu(nesqp->nesqp_context->snd_nxt), + cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale), + le32_to_cpu(nesqp->nesqp_context->rcv_wnd), + le32_to_cpu(nesqp->nesqp_context->misc)); nes_debug(NES_DBG_CM, " snd_wnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->snd_wnd)); nes_debug(NES_DBG_CM, " snd_cwnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->cwnd)); nes_debug(NES_DBG_CM, " max_swnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->max_snd_wnd)); @@ -2316,19 +2961,16 @@ static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_nod */ int nes_cm_disconn(struct nes_qp *nesqp) { - unsigned long flags; - - spin_lock_irqsave(&nesqp->lock, flags); - if (nesqp->disconn_pending == 0) { - nesqp->disconn_pending++; - spin_unlock_irqrestore(&nesqp->lock, flags); - /* init our disconnect work element, to */ - INIT_WORK(&nesqp->disconn_work, nes_disconnect_worker); + struct disconn_work *work; - queue_work(g_cm_core->disconn_wq, &nesqp->disconn_work); - } else - spin_unlock_irqrestore(&nesqp->lock, flags); + work = kzalloc(sizeof *work, GFP_ATOMIC); + if (!work) + return -ENOMEM; /* Timer will clean up */ + nes_add_ref(&nesqp->ibqp); + work->nesqp = nesqp; + INIT_WORK(&work->work, nes_disconnect_worker); + queue_work(g_cm_core->disconn_wq, &work->work); return 0; } @@ -2338,11 +2980,14 @@ int nes_cm_disconn(struct nes_qp *nesqp) */ static void nes_disconnect_worker(struct work_struct *work) { - struct nes_qp *nesqp = container_of(work, struct nes_qp, disconn_work); + struct disconn_work *dwork = container_of(work, struct disconn_work, work); + struct nes_qp *nesqp = dwork->nesqp; + kfree(dwork); nes_debug(NES_DBG_CM, "processing AEQE id 0x%04X for QP%u.\n", - nesqp->last_aeq, nesqp->hwqp.qp_id); + nesqp->last_aeq, nesqp->hwqp.qp_id); nes_cm_disconn_true(nesqp); + nes_rem_ref(&nesqp->ibqp); } @@ -2359,7 +3004,12 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp) u16 last_ae; u8 original_hw_tcp_state; u8 original_ibqp_state; - u8 issued_disconnect_reset = 0; + int disconn_status = 0; + int issue_disconn = 0; + int issue_close = 0; + int issue_flush = 0; + u32 flush_q = NES_CQP_FLUSH_RQ; + struct ib_event ibevent; if (!nesqp) { nes_debug(NES_DBG_CM, "disconnect_worker nesqp is NULL\n"); @@ -2371,7 +3021,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp) /* make sure we havent already closed this connection */ if (!cm_id) { nes_debug(NES_DBG_CM, "QP%u disconnect_worker cmid is NULL\n", - nesqp->hwqp.qp_id); + nesqp->hwqp.qp_id); spin_unlock_irqrestore(&nesqp->lock, flags); return -1; } @@ -2380,68 +3030,86 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp) nes_debug(NES_DBG_CM, "Disconnecting QP%u\n", nesqp->hwqp.qp_id); original_hw_tcp_state = nesqp->hw_tcp_state; - original_ibqp_state = nesqp->ibqp_state; + original_ibqp_state = nesqp->ibqp_state; last_ae = nesqp->last_aeq; + if (nesqp->term_flags) { + issue_disconn = 1; + issue_close = 1; + nesqp->cm_id = NULL; + del_timer(&nesqp->terminate_timer); + if (nesqp->flush_issued == 0) { + nesqp->flush_issued = 1; + issue_flush = 1; + } + } else if ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) || + ((original_ibqp_state == IB_QPS_RTS) && + (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { + issue_disconn = 1; + if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET) + disconn_status = -ECONNRESET; + } + + if (((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) || + (original_hw_tcp_state == NES_AEQE_TCP_STATE_TIME_WAIT) || + (last_ae == NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) || + (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { + issue_close = 1; + nesqp->cm_id = NULL; + if (nesqp->flush_issued == 0) { + nesqp->flush_issued = 1; + issue_flush = 1; + } + } + + spin_unlock_irqrestore(&nesqp->lock, flags); - nes_debug(NES_DBG_CM, "set ibqp_state=%u\n", nesqp->ibqp_state); + if ((issue_flush) && (nesqp->destroyed == 0)) { + /* Flush the queue(s) */ + if (nesqp->hw_iwarp_state >= NES_AEQE_IWARP_STATE_TERMINATE) + flush_q |= NES_CQP_FLUSH_SQ; + flush_wqes(nesvnic->nesdev, nesqp, flush_q, 1); - if ((nesqp->cm_id) && (cm_id->event_handler)) { - if ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) || - ((original_ibqp_state == IB_QPS_RTS) && - (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { + if (nesqp->term_flags) { + ibevent.device = nesqp->ibqp.device; + ibevent.event = nesqp->terminate_eventtype; + ibevent.element.qp = &nesqp->ibqp; + if (nesqp->ibqp.event_handler) + nesqp->ibqp.event_handler(&ibevent, nesqp->ibqp.qp_context); + } + } + + if ((cm_id) && (cm_id->event_handler)) { + if (issue_disconn) { atomic_inc(&cm_disconnects); cm_event.event = IW_CM_EVENT_DISCONNECT; - if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET) { - cm_event.status = IW_CM_EVENT_STATUS_RESET; - nes_debug(NES_DBG_CM, "Generating a CM " - "Disconnect Event (status reset) for " - "QP%u, cm_id = %p. \n", - nesqp->hwqp.qp_id, cm_id); - } else - cm_event.status = IW_CM_EVENT_STATUS_OK; - + cm_event.status = disconn_status; cm_event.local_addr = cm_id->local_addr; cm_event.remote_addr = cm_id->remote_addr; cm_event.private_data = NULL; cm_event.private_data_len = 0; nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event" - " for QP%u, SQ Head = %u, SQ Tail = %u. " - "cm_id = %p, refcount = %u.\n", - nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, - nesqp->hwqp.sq_tail, cm_id, - atomic_read(&nesqp->refcount)); + " for QP%u, SQ Head = %u, SQ Tail = %u. " + "cm_id = %p, refcount = %u.\n", + nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, + nesqp->hwqp.sq_tail, cm_id, + atomic_read(&nesqp->refcount)); - spin_unlock_irqrestore(&nesqp->lock, flags); ret = cm_id->event_handler(cm_id, &cm_event); if (ret) nes_debug(NES_DBG_CM, "OFA CM event_handler " - "returned, ret=%d\n", ret); - spin_lock_irqsave(&nesqp->lock, flags); + "returned, ret=%d\n", ret); } - nesqp->disconn_pending = 0; - /* There might have been another AE while the lock was released */ - original_hw_tcp_state = nesqp->hw_tcp_state; - original_ibqp_state = nesqp->ibqp_state; - last_ae = nesqp->last_aeq; - - if ((issued_disconnect_reset == 0) && (nesqp->cm_id) && - ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) || - (original_hw_tcp_state == NES_AEQE_TCP_STATE_TIME_WAIT) || - (last_ae == NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) || - (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { + if (issue_close) { atomic_inc(&cm_closes); - nesqp->cm_id = NULL; - nesqp->in_disconnect = 0; - spin_unlock_irqrestore(&nesqp->lock, flags); nes_disconnect(nesqp, 1); cm_id->provider_data = nesqp; /* Send up the close complete event */ cm_event.event = IW_CM_EVENT_CLOSE; - cm_event.status = IW_CM_EVENT_STATUS_OK; + cm_event.status = 0; cm_event.provider_data = cm_id->provider_data; cm_event.local_addr = cm_id->local_addr; cm_event.remote_addr = cm_id->remote_addr; @@ -2449,33 +3117,11 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp) cm_event.private_data_len = 0; ret = cm_id->event_handler(cm_id, &cm_event); - if (ret) { + if (ret) nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); - } cm_id->rem_ref(cm_id); - - spin_lock_irqsave(&nesqp->lock, flags); - if (nesqp->flush_issued == 0) { - nesqp->flush_issued = 1; - spin_unlock_irqrestore(&nesqp->lock, flags); - flush_wqes(nesvnic->nesdev, nesqp, - NES_CQP_FLUSH_RQ, 1); - } else - spin_unlock_irqrestore(&nesqp->lock, flags); - } else { - cm_id = nesqp->cm_id; - spin_unlock_irqrestore(&nesqp->lock, flags); - /* check to see if the inbound reset beat the outbound reset */ - if ((!cm_id) && (last_ae==NES_AEQE_AEID_RESET_SENT)) { - nes_debug(NES_DBG_CM, "QP%u: Decing refcount " - "due to inbound reset beating the " - "outbound reset.\n", nesqp->hwqp.qp_id); - } } - } else { - nesqp->disconn_pending = 0; - spin_unlock_irqrestore(&nesqp->lock, flags); } return 0; @@ -2490,15 +3136,17 @@ static int nes_disconnect(struct nes_qp *nesqp, int abrupt) int ret = 0; struct nes_vnic *nesvnic; struct nes_device *nesdev; + struct nes_ib_device *nesibdev; nesvnic = to_nesvnic(nesqp->ibqp.device); if (!nesvnic) return -EINVAL; nesdev = nesvnic->nesdev; + nesibdev = nesvnic->nesibdev; nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", - atomic_read(&nesvnic->netdev->refcnt)); + netdev_refcnt_read(nesvnic->netdev)); if (nesqp->active_conn) { @@ -2507,9 +3155,11 @@ static int nes_disconnect(struct nes_qp *nesqp, int abrupt) } else { /* Need to free the Last Streaming Mode Message */ if (nesqp->ietf_frame) { + if (nesqp->lsmm_mr) + nesibdev->ibdev.dereg_mr(nesqp->lsmm_mr); pci_free_consistent(nesdev->pcidev, - nesqp->private_data_len+sizeof(struct ietf_mpa_frame), - nesqp->ietf_frame, nesqp->ietf_frame_pbase); + nesqp->private_data_len + nesqp->ietf_frame_size, + nesqp->ietf_frame, nesqp->ietf_frame_pbase); } } @@ -2543,6 +3193,19 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) u32 crc_value; int ret; int passive_state; + struct nes_ib_device *nesibdev; + struct ib_mr *ibmr = NULL; + struct ib_phys_buf ibphysbuf; + struct nes_pd *nespd; + u64 tagged_offset; + u8 mpa_frame_offset = 0; + struct ietf_mpa_v2 *mpa_v2_frame; + u8 start_addr = 0; + u8 *start_ptr = &start_addr; + u8 **start_buff = &start_ptr; + u16 buff_len = 0; + struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; + struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; ibqp = nes_get_qp(cm_id->device, conn_param->qpn); if (!ibqp) @@ -2559,113 +3222,142 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) "%s\n", cm_node, nesvnic, nesvnic->netdev, nesvnic->netdev->name); + if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) { + if (cm_node->loopbackpartner) + rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner); + rem_ref_cm_node(cm_node->cm_core, cm_node); + return -EINVAL; + } + + passive_state = atomic_add_return(1, &cm_node->passive_state); + if (passive_state == NES_SEND_RESET_EVENT) { + rem_ref_cm_node(cm_node->cm_core, cm_node); + return -ECONNRESET; + } /* associate the node with the QP */ nesqp->cm_node = (void *)cm_node; cm_node->nesqp = nesqp; - nes_add_ref(&nesqp->ibqp); + nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); atomic_inc(&cm_accepts); nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", - atomic_read(&nesvnic->netdev->refcnt)); + netdev_refcnt_read(nesvnic->netdev)); + nesqp->ietf_frame_size = sizeof(struct ietf_mpa_v2); /* allocate the ietf frame and space for private data */ nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev, - sizeof(struct ietf_mpa_frame) + conn_param->private_data_len, - &nesqp->ietf_frame_pbase); + nesqp->ietf_frame_size + conn_param->private_data_len, + &nesqp->ietf_frame_pbase); if (!nesqp->ietf_frame) { - nes_debug(NES_DBG_CM, "Unable to allocate memory for private " - "data\n"); + nes_debug(NES_DBG_CM, "Unable to allocate memory for private data\n"); return -ENOMEM; } + mpa_v2_frame = (struct ietf_mpa_v2 *)nesqp->ietf_frame; + if (cm_node->mpa_frame_rev == IETF_MPA_V1) + mpa_frame_offset = 4; - /* setup the MPA frame */ - nesqp->private_data_len = conn_param->private_data_len; - memcpy(nesqp->ietf_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE); + if (cm_node->mpa_frame_rev == IETF_MPA_V1 || + cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) { + record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord); + } - memcpy(nesqp->ietf_frame->priv_data, conn_param->private_data, - conn_param->private_data_len); + memcpy(mpa_v2_frame->priv_data, conn_param->private_data, + conn_param->private_data_len); - nesqp->ietf_frame->priv_data_len = - cpu_to_be16(conn_param->private_data_len); - nesqp->ietf_frame->rev = mpa_version; - nesqp->ietf_frame->flags = IETF_MPA_FLAGS_CRC; + cm_build_mpa_frame(cm_node, start_buff, &buff_len, nesqp->ietf_frame, MPA_KEY_REPLY); + nesqp->private_data_len = conn_param->private_data_len; /* setup our first outgoing iWarp send WQE (the IETF frame response) */ wqe = &nesqp->hwqp.sq_vbase[0]; - if (cm_id->remote_addr.sin_addr.s_addr != - cm_id->local_addr.sin_addr.s_addr) { + if (raddr->sin_addr.s_addr != laddr->sin_addr.s_addr) { u64temp = (unsigned long)nesqp; - u64temp |= NES_SW_CONTEXT_ALIGN>>1; + nesibdev = nesvnic->nesibdev; + nespd = nesqp->nespd; + ibphysbuf.addr = nesqp->ietf_frame_pbase + mpa_frame_offset; + ibphysbuf.size = buff_len; + tagged_offset = (u64)(unsigned long)*start_buff; + ibmr = nesibdev->ibdev.reg_phys_mr((struct ib_pd *)nespd, + &ibphysbuf, 1, + IB_ACCESS_LOCAL_WRITE, + &tagged_offset); + if (!ibmr) { + nes_debug(NES_DBG_CM, "Unable to register memory region" + "for lSMM for cm_node = %p \n", + cm_node); + pci_free_consistent(nesdev->pcidev, + nesqp->private_data_len + nesqp->ietf_frame_size, + nesqp->ietf_frame, nesqp->ietf_frame_pbase); + return -ENOMEM; + } + + ibmr->pd = &nespd->ibpd; + ibmr->device = nespd->ibpd.device; + nesqp->lsmm_mr = ibmr; + + u64temp |= NES_SW_CONTEXT_ALIGN >> 1; set_wqe_64bit_value(wqe->wqe_words, - NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, - u64temp); + NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, + u64temp); wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING | - NES_IWARP_SQ_WQE_WRPDU); + NES_IWARP_SQ_WQE_WRPDU); wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = - cpu_to_le32(conn_param->private_data_len + - sizeof(struct ietf_mpa_frame)); - wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = - cpu_to_le32((u32)nesqp->ietf_frame_pbase); - wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = - cpu_to_le32((u32)((u64)nesqp->ietf_frame_pbase >> 32)); + cpu_to_le32(buff_len); + set_wqe_64bit_value(wqe->wqe_words, + NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, + (u64)(unsigned long)(*start_buff)); wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = - cpu_to_le32(conn_param->private_data_len + - sizeof(struct ietf_mpa_frame)); - wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0; + cpu_to_le32(buff_len); + wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = ibmr->lkey; + if (nesqp->sq_kmapped) { + nesqp->sq_kmapped = 0; + kunmap(nesqp->page); + } nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | - NES_QPCONTEXT_ORDIRD_WRPDU); + NES_QPCONTEXT_ORDIRD_WRPDU); } else { nesqp->nesqp_context->ird_ord_sizes |= - cpu_to_le32((NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | - NES_QPCONTEXT_ORDIRD_WRPDU | - NES_QPCONTEXT_ORDIRD_ALSMM)); + cpu_to_le32(NES_QPCONTEXT_ORDIRD_WRPDU); } nesqp->skip_lsmm = 1; - /* Cache the cm_id in the qp */ nesqp->cm_id = cm_id; cm_node->cm_id = cm_id; /* nesqp->cm_node = (void *)cm_id->provider_data; */ cm_id->provider_data = nesqp; - nesqp->active_conn = 0; + nesqp->active_conn = 0; if (cm_node->state == NES_CM_STATE_TSA) nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n", - cm_node); + cm_node); nes_cm_init_tsa_conn(nesqp, cm_node); nesqp->nesqp_context->tcpPorts[0] = - cpu_to_le16(ntohs(cm_id->local_addr.sin_port)); + cpu_to_le16(cm_node->mapped_loc_port); nesqp->nesqp_context->tcpPorts[1] = - cpu_to_le16(ntohs(cm_id->remote_addr.sin_port)); + cpu_to_le16(cm_node->mapped_rem_port); - if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) - nesqp->nesqp_context->ip0 = - cpu_to_le32(ntohl(nesvnic->local_ipaddr)); - else - nesqp->nesqp_context->ip0 = - cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr)); + nesqp->nesqp_context->ip0 = cpu_to_le32(cm_node->mapped_rem_addr); nesqp->nesqp_context->misc2 |= cpu_to_le32( - (u32)PCI_FUNC(nesdev->pcidev->devfn) << - NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); + (u32)PCI_FUNC(nesdev->pcidev->devfn) << + NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32(nes_arp_table(nesdev, - le32_to_cpu(nesqp->nesqp_context->ip0), NULL, - NES_ARP_RESOLVE) << 16); + le32_to_cpu(nesqp->nesqp_context->ip0), NULL, + NES_ARP_RESOLVE) << 16); nesqp->nesqp_context->ts_val_delta = cpu_to_le32( jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); @@ -2675,23 +3367,20 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32( ((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT)); nesqp->nesqp_context->ird_ord_sizes |= - cpu_to_le32((u32)conn_param->ord); + cpu_to_le32((u32)cm_node->ord_size); memset(&nes_quad, 0, sizeof(nes_quad)); nes_quad.DstIpAdrIndex = cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); - if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) - nes_quad.SrcIpadr = nesvnic->local_ipaddr; - else - nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr; - nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port; - nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port; + nes_quad.SrcIpadr = htonl(cm_node->mapped_rem_addr); + nes_quad.TcpPorts[0] = htons(cm_node->mapped_rem_port); + nes_quad.TcpPorts[1] = htons(cm_node->mapped_loc_port); /* Produce hash key */ crc_value = get_crc_value(&nes_quad); nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, CRC = 0x%08X\n", - nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask); + nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask); nesqp->hte_index &= adapter->hte_index_mask; nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); @@ -2699,28 +3388,28 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = " - "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + " - "private data length=%zu.\n", nesqp->hwqp.qp_id, - ntohl(cm_id->remote_addr.sin_addr.s_addr), - ntohs(cm_id->remote_addr.sin_port), - ntohl(cm_id->local_addr.sin_addr.s_addr), - ntohs(cm_id->local_addr.sin_port), - le32_to_cpu(nesqp->nesqp_context->rcv_nxt), - le32_to_cpu(nesqp->nesqp_context->snd_nxt), - conn_param->private_data_len + - sizeof(struct ietf_mpa_frame)); - + "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + " + "private data length=%u.\n", nesqp->hwqp.qp_id, + ntohl(raddr->sin_addr.s_addr), ntohs(raddr->sin_port), + ntohl(laddr->sin_addr.s_addr), ntohs(laddr->sin_port), + le32_to_cpu(nesqp->nesqp_context->rcv_nxt), + le32_to_cpu(nesqp->nesqp_context->snd_nxt), + buff_len); /* notify OF layer that accept event was successful */ cm_id->add_ref(cm_id); + nes_add_ref(&nesqp->ibqp); cm_event.event = IW_CM_EVENT_ESTABLISHED; - cm_event.status = IW_CM_EVENT_STATUS_ACCEPTED; + cm_event.status = 0; cm_event.provider_data = (void *)nesqp; cm_event.local_addr = cm_id->local_addr; cm_event.remote_addr = cm_id->remote_addr; cm_event.private_data = NULL; cm_event.private_data_len = 0; + cm_event.ird = cm_node->ird_size; + cm_event.ord = cm_node->ord_size; + ret = cm_id->event_handler(cm_id, &cm_event); attr.qp_state = IB_QPS_RTS; nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); @@ -2729,16 +3418,13 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) nesqp->private_data_len; /* copy entire MPA frame to our cm_node's frame */ memcpy(cm_node->loopbackpartner->mpa_frame_buf, - nesqp->ietf_frame->priv_data, nesqp->private_data_len); + conn_param->private_data, conn_param->private_data_len); create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED); } if (ret) printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " - "ret=%d\n", __func__, __LINE__, ret); + "ret=%d\n", __func__, __LINE__, ret); - passive_state = atomic_add_return(1, &cm_node->passive_state); - if (passive_state == NES_SEND_RESET_EVENT) - create_event(cm_node, NES_CM_EVENT_RESET); return 0; } @@ -2749,23 +3435,29 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) { struct nes_cm_node *cm_node; + struct nes_cm_node *loopback; struct nes_cm_core *cm_core; + u8 *start_buff; atomic_inc(&cm_rejects); - cm_node = (struct nes_cm_node *) cm_id->provider_data; + cm_node = (struct nes_cm_node *)cm_id->provider_data; + loopback = cm_node->loopbackpartner; cm_core = cm_node->cm_core; - cm_node->mpa_frame_size = sizeof(struct ietf_mpa_frame) + pdata_len; - - strcpy(&cm_node->mpa_frame.key[0], IEFT_MPA_KEY_REP); - memcpy(&cm_node->mpa_frame.priv_data, pdata, pdata_len); - - cm_node->mpa_frame.priv_data_len = cpu_to_be16(pdata_len); - cm_node->mpa_frame.rev = mpa_version; - cm_node->mpa_frame.flags = IETF_MPA_FLAGS_CRC | IETF_MPA_FLAGS_REJECT; + cm_node->cm_id = cm_id; - cm_core->api->reject(cm_core, &cm_node->mpa_frame, cm_node); + if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER) + return -EINVAL; - return 0; + if (loopback) { + memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len); + loopback->mpa_frame.priv_data_len = pdata_len; + loopback->mpa_frame_size = pdata_len; + } else { + start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); + cm_node->mpa_frame_size = pdata_len; + memcpy(start_buff, pdata, pdata_len); + } + return cm_core->api->reject(cm_core, cm_node); } @@ -2781,7 +3473,15 @@ int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) struct nes_device *nesdev; struct nes_cm_node *cm_node; struct nes_cm_info cm_info; - + int apbvt_set = 0; + struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; + struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; + struct iwpm_dev_data pm_reg_msg; + struct iwpm_sa_data pm_msg; + int iwpm_err = 0; + + if (cm_id->remote_addr.ss_family != AF_INET) + return -ENOSYS; ibqp = nes_get_qp(cm_id->device, conn_param->qpn); if (!ibqp) return -EINVAL; @@ -2791,63 +3491,96 @@ int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) nesvnic = to_nesvnic(nesqp->ibqp.device); if (!nesvnic) return -EINVAL; - nesdev = nesvnic->nesdev; + nesdev = nesvnic->nesdev; if (!nesdev) return -EINVAL; + if (!laddr->sin_port || !raddr->sin_port) + return -EINVAL; + nes_debug(NES_DBG_CM, "QP%u, current IP = 0x%08X, Destination IP = " - "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id, - ntohl(nesvnic->local_ipaddr), - ntohl(cm_id->remote_addr.sin_addr.s_addr), - ntohs(cm_id->remote_addr.sin_port), - ntohl(cm_id->local_addr.sin_addr.s_addr), - ntohs(cm_id->local_addr.sin_port)); + "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id, + ntohl(nesvnic->local_ipaddr), ntohl(raddr->sin_addr.s_addr), + ntohs(raddr->sin_port), ntohl(laddr->sin_addr.s_addr), + ntohs(laddr->sin_port)); atomic_inc(&cm_connects); nesqp->active_conn = 1; /* cache the cm_id in the qp */ nesqp->cm_id = cm_id; - cm_id->provider_data = nesqp; - nesqp->private_data_len = conn_param->private_data_len; - nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32((u32)conn_param->ord); + nes_debug(NES_DBG_CM, "requested ord = 0x%08X.\n", (u32)conn_param->ord); nes_debug(NES_DBG_CM, "mpa private data len =%u\n", - conn_param->private_data_len); - - if (cm_id->local_addr.sin_addr.s_addr != - cm_id->remote_addr.sin_addr.s_addr) - nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port), - PCI_FUNC(nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD); + conn_param->private_data_len); /* set up the connection params for the node */ - cm_info.loc_addr = htonl(cm_id->local_addr.sin_addr.s_addr); - cm_info.loc_port = htons(cm_id->local_addr.sin_port); - cm_info.rem_addr = htonl(cm_id->remote_addr.sin_addr.s_addr); - cm_info.rem_port = htons(cm_id->remote_addr.sin_port); + cm_info.loc_addr = ntohl(laddr->sin_addr.s_addr); + cm_info.loc_port = ntohs(laddr->sin_port); + cm_info.rem_addr = ntohl(raddr->sin_addr.s_addr); + cm_info.rem_port = ntohs(raddr->sin_port); cm_info.cm_id = cm_id; cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; + /* No port mapper available, go with the specified peer information */ + cm_info.mapped_loc_addr = cm_info.loc_addr; + cm_info.mapped_loc_port = cm_info.loc_port; + cm_info.mapped_rem_addr = cm_info.rem_addr; + cm_info.mapped_rem_port = cm_info.rem_port; + + nes_form_reg_msg(nesvnic, &pm_reg_msg); + iwpm_err = iwpm_register_pid(&pm_reg_msg, RDMA_NL_NES); + if (iwpm_err) { + nes_debug(NES_DBG_NLMSG, + "Port Mapper reg pid fail (err = %d).\n", iwpm_err); + } + if (iwpm_valid_pid() && !iwpm_err) { + nes_form_pm_msg(&cm_info, &pm_msg); + iwpm_err = iwpm_add_and_query_mapping(&pm_msg, RDMA_NL_NES); + if (iwpm_err) + nes_debug(NES_DBG_NLMSG, + "Port Mapper query fail (err = %d).\n", iwpm_err); + else + nes_record_pm_msg(&cm_info, &pm_msg); + } + + if (laddr->sin_addr.s_addr != raddr->sin_addr.s_addr) { + nes_manage_apbvt(nesvnic, cm_info.mapped_loc_port, + PCI_FUNC(nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD); + apbvt_set = 1; + } + + if (nes_create_mapinfo(&cm_info)) + return -ENOMEM; + cm_id->add_ref(cm_id); /* create a connect CM node connection */ cm_node = g_cm_core->api->connect(g_cm_core, nesvnic, - conn_param->private_data_len, (void *)conn_param->private_data, - &cm_info); + conn_param->private_data_len, (void *)conn_param->private_data, + &cm_info); if (!cm_node) { - if (cm_id->local_addr.sin_addr.s_addr != - cm_id->remote_addr.sin_addr.s_addr) - nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port), - PCI_FUNC(nesdev->pcidev->devfn), - NES_MANAGE_APBVT_DEL); - + if (apbvt_set) + nes_manage_apbvt(nesvnic, cm_info.mapped_loc_port, + PCI_FUNC(nesdev->pcidev->devfn), + NES_MANAGE_APBVT_DEL); + + nes_debug(NES_DBG_NLMSG, "Delete mapped_loc_port = %04X\n", + cm_info.mapped_loc_port); + nes_remove_mapinfo(cm_info.loc_addr, cm_info.loc_port, + cm_info.mapped_loc_addr, cm_info.mapped_loc_port); cm_id->rem_ref(cm_id); return -ENOMEM; } - cm_node->apbvt_set = 1; + record_ird_ord(cm_node, (u16)conn_param->ird, (u16)conn_param->ord); + if (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO && + cm_node->ord_size == 0) + cm_node->ord_size = 1; + + cm_node->apbvt_set = apbvt_set; nesqp->cm_node = cm_node; cm_node->nesqp = nesqp; nes_add_ref(&nesqp->ibqp); @@ -2864,53 +3597,59 @@ int nes_create_listen(struct iw_cm_id *cm_id, int backlog) struct nes_vnic *nesvnic; struct nes_cm_listener *cm_node; struct nes_cm_info cm_info; - struct nes_adapter *adapter; int err; - + struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; nes_debug(NES_DBG_CM, "cm_id = %p, local port = 0x%04X.\n", - cm_id, ntohs(cm_id->local_addr.sin_port)); + cm_id, ntohs(laddr->sin_port)); + if (cm_id->local_addr.ss_family != AF_INET) + return -ENOSYS; nesvnic = to_nesvnic(cm_id->device); if (!nesvnic) return -EINVAL; - adapter = nesvnic->nesdev->nesadapter; + nes_debug(NES_DBG_CM, "nesvnic=%p, netdev=%p, %s\n", nesvnic, nesvnic->netdev, nesvnic->netdev->name); nes_debug(NES_DBG_CM, "nesvnic->local_ipaddr=0x%08x, sin_addr.s_addr=0x%08x\n", - nesvnic->local_ipaddr, cm_id->local_addr.sin_addr.s_addr); + nesvnic->local_ipaddr, laddr->sin_addr.s_addr); /* setup listen params in our api call struct */ - cm_info.loc_addr = nesvnic->local_ipaddr; - cm_info.loc_port = cm_id->local_addr.sin_port; + cm_info.loc_addr = ntohl(nesvnic->local_ipaddr); + cm_info.loc_port = ntohs(laddr->sin_port); cm_info.backlog = backlog; cm_info.cm_id = cm_id; cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; + /* No port mapper available, go with the specified info */ + cm_info.mapped_loc_addr = cm_info.loc_addr; + cm_info.mapped_loc_port = cm_info.loc_port; cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info); if (!cm_node) { printk(KERN_ERR "%s[%u] Error returned from listen API call\n", - __func__, __LINE__); + __func__, __LINE__); return -ENOMEM; } cm_id->provider_data = cm_node; if (!cm_node->reused_node) { - err = nes_manage_apbvt(nesvnic, - ntohs(cm_id->local_addr.sin_port), - PCI_FUNC(nesvnic->nesdev->pcidev->devfn), - NES_MANAGE_APBVT_ADD); + if (nes_create_mapinfo(&cm_info)) + return -ENOMEM; + + err = nes_manage_apbvt(nesvnic, cm_node->mapped_loc_port, + PCI_FUNC(nesvnic->nesdev->pcidev->devfn), + NES_MANAGE_APBVT_ADD); if (err) { printk(KERN_ERR "nes_manage_apbvt call returned %d.\n", - err); + err); g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); return err; } - cm_listens_created++; + atomic_inc(&cm_listens_created); } cm_id->add_ref(cm_id); @@ -2943,13 +3682,13 @@ int nes_destroy_listen(struct iw_cm_id *cm_id) int nes_cm_recv(struct sk_buff *skb, struct net_device *netdevice) { int rc = 0; + cm_packets_received++; - if ((g_cm_core) && (g_cm_core->api)) { + if ((g_cm_core) && (g_cm_core->api)) rc = g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb); - } else { + else nes_debug(NES_DBG_CM, "Unable to process packet for CM," - " cm is not setup properly.\n"); - } + " cm is not setup properly.\n"); return rc; } @@ -2964,11 +3703,10 @@ int nes_cm_start(void) nes_debug(NES_DBG_CM, "\n"); /* create the primary CM core, pass this handle to subsequent core inits */ g_cm_core = nes_cm_alloc_core(); - if (g_cm_core) { + if (g_cm_core) return 0; - } else { + else return -ENOMEM; - } } @@ -2989,7 +3727,6 @@ int nes_cm_stop(void) */ static void cm_event_connected(struct nes_cm_event *event) { - u64 u64temp; struct nes_qp *nesqp; struct nes_vnic *nesvnic; struct nes_device *nesdev; @@ -2998,10 +3735,12 @@ static void cm_event_connected(struct nes_cm_event *event) struct ib_qp_attr attr; struct iw_cm_id *cm_id; struct iw_cm_event cm_event; - struct nes_hw_qp_wqe *wqe; struct nes_v4_quad nes_quad; u32 crc_value; int ret; + struct sockaddr_in *laddr; + struct sockaddr_in *raddr; + struct sockaddr_in *cm_event_laddr; /* get all our handles */ cm_node = event->cm_node; @@ -3011,32 +3750,26 @@ static void cm_event_connected(struct nes_cm_event *event) nesvnic = to_nesvnic(nesqp->ibqp.device); nesdev = nesvnic->nesdev; nesadapter = nesdev->nesadapter; + laddr = (struct sockaddr_in *)&cm_id->local_addr; + raddr = (struct sockaddr_in *)&cm_id->remote_addr; + cm_event_laddr = (struct sockaddr_in *)&cm_event.local_addr; - if (nesqp->destroyed) { + if (nesqp->destroyed) return; - } atomic_inc(&cm_connecteds); nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" - " local port 0x%04X. jiffies = %lu.\n", - nesqp->hwqp.qp_id, - ntohl(cm_id->remote_addr.sin_addr.s_addr), - ntohs(cm_id->remote_addr.sin_port), - ntohs(cm_id->local_addr.sin_port), - jiffies); + " local port 0x%04X. jiffies = %lu.\n", + nesqp->hwqp.qp_id, ntohl(raddr->sin_addr.s_addr), + ntohs(raddr->sin_port), ntohs(laddr->sin_port), jiffies); nes_cm_init_tsa_conn(nesqp, cm_node); /* set the QP tsa context */ nesqp->nesqp_context->tcpPorts[0] = - cpu_to_le16(ntohs(cm_id->local_addr.sin_port)); + cpu_to_le16(cm_node->mapped_loc_port); nesqp->nesqp_context->tcpPorts[1] = - cpu_to_le16(ntohs(cm_id->remote_addr.sin_port)); - if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) - nesqp->nesqp_context->ip0 = - cpu_to_le32(ntohl(nesvnic->local_ipaddr)); - else - nesqp->nesqp_context->ip0 = - cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr)); + cpu_to_le16(cm_node->mapped_rem_port); + nesqp->nesqp_context->ip0 = cpu_to_le32(cm_node->mapped_rem_addr); nesqp->nesqp_context->misc2 |= cpu_to_le32( (u32)PCI_FUNC(nesdev->pcidev->devfn) << @@ -3051,85 +3784,63 @@ static void cm_event_connected(struct nes_cm_event *event) nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT); + nesqp->nesqp_context->ird_ord_sizes |= + cpu_to_le32((u32)cm_node->ord_size); /* Adjust tail for not having a LSMM */ - nesqp->hwqp.sq_tail = 1; + /*nesqp->hwqp.sq_tail = 1;*/ -#if defined(NES_SEND_FIRST_WRITE) - if (cm_node->send_write0) { - nes_debug(NES_DBG_CM, "Sending first write.\n"); - wqe = &nesqp->hwqp.sq_vbase[0]; - u64temp = (unsigned long)nesqp; - u64temp |= NES_SW_CONTEXT_ALIGN>>1; - set_wqe_64bit_value(wqe->wqe_words, - NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp); - wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = - cpu_to_le32(NES_IWARP_SQ_OP_RDMAW); - wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0; - wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0; - wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0; - wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0; - wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0; + build_rdma0_msg(cm_node, &nesqp); - /* use the reserved spot on the WQ for the extra first WQE */ - nesqp->nesqp_context->ird_ord_sizes &= - cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | - NES_QPCONTEXT_ORDIRD_WRPDU | - NES_QPCONTEXT_ORDIRD_ALSMM)); - nesqp->skip_lsmm = 1; - nesqp->hwqp.sq_tail = 0; - nes_write32(nesdev->regs + NES_WQE_ALLOC, - (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); - } -#endif + nes_write32(nesdev->regs + NES_WQE_ALLOC, + (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); memset(&nes_quad, 0, sizeof(nes_quad)); nes_quad.DstIpAdrIndex = cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); - if (ipv4_is_loopback(cm_id->remote_addr.sin_addr.s_addr)) - nes_quad.SrcIpadr = nesvnic->local_ipaddr; - else - nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr; - nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port; - nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port; + nes_quad.SrcIpadr = htonl(cm_node->mapped_rem_addr); + nes_quad.TcpPorts[0] = htons(cm_node->mapped_rem_port); + nes_quad.TcpPorts[1] = htons(cm_node->mapped_loc_port); /* Produce hash key */ crc_value = get_crc_value(&nes_quad); nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, After CRC = 0x%08X\n", - nesqp->hte_index, nesqp->hte_index & nesadapter->hte_index_mask); + nesqp->hte_index, nesqp->hte_index & nesadapter->hte_index_mask); nesqp->hte_index &= nesadapter->hte_index_mask; nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); nesqp->ietf_frame = &cm_node->mpa_frame; - nesqp->private_data_len = (u8) cm_node->mpa_frame_size; + nesqp->private_data_len = (u8)cm_node->mpa_frame_size; cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); /* notify OF layer we successfully created the requested connection */ cm_event.event = IW_CM_EVENT_CONNECT_REPLY; - cm_event.status = IW_CM_EVENT_STATUS_ACCEPTED; + cm_event.status = 0; cm_event.provider_data = cm_id->provider_data; - cm_event.local_addr.sin_family = AF_INET; - cm_event.local_addr.sin_port = cm_id->local_addr.sin_port; + cm_event_laddr->sin_family = AF_INET; + cm_event_laddr->sin_port = laddr->sin_port; cm_event.remote_addr = cm_id->remote_addr; cm_event.private_data = (void *)event->cm_node->mpa_frame_buf; - cm_event.private_data_len = (u8) event->cm_node->mpa_frame_size; + cm_event.private_data_len = (u8)event->cm_node->mpa_frame_size; + cm_event.ird = cm_node->ird_size; + cm_event.ord = cm_node->ord_size; - cm_event.local_addr.sin_addr.s_addr = event->cm_info.rem_addr; + cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); ret = cm_id->event_handler(cm_id, &cm_event); nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); if (ret) printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " - "ret=%d\n", __func__, __LINE__, ret); + "ret=%d\n", __func__, __LINE__, ret); attr.qp_state = IB_QPS_RTS; nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = " - "%lu\n", nesqp->hwqp.qp_id, jiffies); + "%lu\n", nesqp->hwqp.qp_id, jiffies); return; } @@ -3150,38 +3861,43 @@ static void cm_event_connect_error(struct nes_cm_event *event) return; cm_id = event->cm_node->cm_id; - if (!cm_id) { + if (!cm_id) return; - } nes_debug(NES_DBG_CM, "cm_node=%p, cm_id=%p\n", event->cm_node, cm_id); nesqp = cm_id->provider_data; - if (!nesqp) { + if (!nesqp) return; - } /* notify OF layer about this connection error event */ /* cm_id->rem_ref(cm_id); */ nesqp->cm_id = NULL; cm_id->provider_data = NULL; cm_event.event = IW_CM_EVENT_CONNECT_REPLY; - cm_event.status = IW_CM_EVENT_STATUS_REJECTED; + cm_event.status = -ECONNRESET; cm_event.provider_data = cm_id->provider_data; cm_event.local_addr = cm_id->local_addr; cm_event.remote_addr = cm_id->remote_addr; cm_event.private_data = NULL; cm_event.private_data_len = 0; - nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, " - "remove_addr=%08x\n", cm_event.local_addr.sin_addr.s_addr, - cm_event.remote_addr.sin_addr.s_addr); +#ifdef CONFIG_INFINIBAND_NES_DEBUG + { + struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) + &cm_event.local_addr; + struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) + &cm_event.remote_addr; + nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, remote_addr=%08x\n", + cm_event_laddr->sin_addr.s_addr, cm_event_raddr->sin_addr.s_addr); + } +#endif ret = cm_id->event_handler(cm_id, &cm_event); nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); if (ret) printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " - "ret=%d\n", __func__, __LINE__, ret); + "ret=%d\n", __func__, __LINE__, ret); cm_id->rem_ref(cm_id); rem_ref_cm_node(event->cm_node->cm_core, event->cm_node); @@ -3210,22 +3926,24 @@ static void cm_event_reset(struct nes_cm_event *event) nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id); nesqp = cm_id->provider_data; + if (!nesqp) + return; nesqp->cm_id = NULL; /* cm_id->provider_data = NULL; */ cm_event.event = IW_CM_EVENT_DISCONNECT; - cm_event.status = IW_CM_EVENT_STATUS_RESET; + cm_event.status = -ECONNRESET; cm_event.provider_data = cm_id->provider_data; cm_event.local_addr = cm_id->local_addr; cm_event.remote_addr = cm_id->remote_addr; cm_event.private_data = NULL; cm_event.private_data_len = 0; - ret = cm_id->event_handler(cm_id, &cm_event); cm_id->add_ref(cm_id); + ret = cm_id->event_handler(cm_id, &cm_event); atomic_inc(&cm_closes); cm_event.event = IW_CM_EVENT_CLOSE; - cm_event.status = IW_CM_EVENT_STATUS_OK; + cm_event.status = 0; cm_event.provider_data = cm_id->provider_data; cm_event.local_addr = cm_id->local_addr; cm_event.remote_addr = cm_id->remote_addr; @@ -3249,10 +3967,14 @@ static void cm_event_reset(struct nes_cm_event *event) */ static void cm_event_mpa_req(struct nes_cm_event *event) { - struct iw_cm_id *cm_id; + struct iw_cm_id *cm_id; struct iw_cm_event cm_event; int ret; struct nes_cm_node *cm_node; + struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) + &cm_event.local_addr; + struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) + &cm_event.remote_addr; cm_node = event->cm_node; if (!cm_node) @@ -3261,27 +3983,81 @@ static void cm_event_mpa_req(struct nes_cm_event *event) atomic_inc(&cm_connect_reqs); nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", - cm_node, cm_id, jiffies); + cm_node, cm_id, jiffies); cm_event.event = IW_CM_EVENT_CONNECT_REQUEST; - cm_event.status = IW_CM_EVENT_STATUS_OK; + cm_event.status = 0; cm_event.provider_data = (void *)cm_node; - cm_event.local_addr.sin_family = AF_INET; - cm_event.local_addr.sin_port = htons(event->cm_info.loc_port); - cm_event.local_addr.sin_addr.s_addr = htonl(event->cm_info.loc_addr); + cm_event_laddr->sin_family = AF_INET; + cm_event_laddr->sin_port = htons(event->cm_info.loc_port); + cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr); + + cm_event_raddr->sin_family = AF_INET; + cm_event_raddr->sin_port = htons(event->cm_info.rem_port); + cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); + cm_event.private_data = cm_node->mpa_frame_buf; + cm_event.private_data_len = (u8)cm_node->mpa_frame_size; + if (cm_node->mpa_frame_rev == IETF_MPA_V1) { + cm_event.ird = NES_MAX_IRD; + cm_event.ord = NES_MAX_ORD; + } else { + cm_event.ird = cm_node->ird_size; + cm_event.ord = cm_node->ord_size; + } + + ret = cm_id->event_handler(cm_id, &cm_event); + if (ret) + printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", + __func__, __LINE__, ret); + return; +} + + +static void cm_event_mpa_reject(struct nes_cm_event *event) +{ + struct iw_cm_id *cm_id; + struct iw_cm_event cm_event; + struct nes_cm_node *cm_node; + int ret; + struct sockaddr_in *cm_event_laddr = (struct sockaddr_in *) + &cm_event.local_addr; + struct sockaddr_in *cm_event_raddr = (struct sockaddr_in *) + &cm_event.remote_addr; + + cm_node = event->cm_node; + if (!cm_node) + return; + cm_id = cm_node->cm_id; - cm_event.remote_addr.sin_family = AF_INET; - cm_event.remote_addr.sin_port = htons(event->cm_info.rem_port); - cm_event.remote_addr.sin_addr.s_addr = htonl(event->cm_info.rem_addr); + atomic_inc(&cm_connect_reqs); + nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", + cm_node, cm_id, jiffies); - cm_event.private_data = cm_node->mpa_frame_buf; - cm_event.private_data_len = (u8) cm_node->mpa_frame_size; + cm_event.event = IW_CM_EVENT_CONNECT_REPLY; + cm_event.status = -ECONNREFUSED; + cm_event.provider_data = cm_id->provider_data; + + cm_event_laddr->sin_family = AF_INET; + cm_event_laddr->sin_port = htons(event->cm_info.loc_port); + cm_event_laddr->sin_addr.s_addr = htonl(event->cm_info.loc_addr); + + cm_event_raddr->sin_family = AF_INET; + cm_event_raddr->sin_port = htons(event->cm_info.rem_port); + cm_event_raddr->sin_addr.s_addr = htonl(event->cm_info.rem_addr); + + cm_event.private_data = cm_node->mpa_frame_buf; + cm_event.private_data_len = (u8)cm_node->mpa_frame_size; + + nes_debug(NES_DBG_CM, "call CM_EVENT_MPA_REJECTED, local_addr=%08x, " + "remove_addr=%08x\n", + cm_event_laddr->sin_addr.s_addr, + cm_event_raddr->sin_addr.s_addr); ret = cm_id->event_handler(cm_id, &cm_event); if (ret) - printk("%s[%u] OFA CM event_handler returned, ret=%d\n", - __func__, __LINE__, ret); + printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", + __func__, __LINE__, ret); return; } @@ -3300,7 +4076,7 @@ static int nes_cm_post_event(struct nes_cm_event *event) event->cm_info.cm_id->add_ref(event->cm_info.cm_id); INIT_WORK(&event->event_work, nes_cm_event_handler); nes_debug(NES_DBG_CM, "cm_node=%p queue_work, event=%p\n", - event->cm_node, event); + event->cm_node, event); queue_work(event->cm_node->cm_core->event_wq, &event->event_work); @@ -3317,7 +4093,7 @@ static int nes_cm_post_event(struct nes_cm_event *event) static void nes_cm_event_handler(struct work_struct *work) { struct nes_cm_event *event = container_of(work, struct nes_cm_event, - event_work); + event_work); struct nes_cm_core *cm_core; if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core)) @@ -3325,29 +4101,37 @@ static void nes_cm_event_handler(struct work_struct *work) cm_core = event->cm_node->cm_core; nes_debug(NES_DBG_CM, "event=%p, event->type=%u, events posted=%u\n", - event, event->type, atomic_read(&cm_core->events_posted)); + event, event->type, atomic_read(&cm_core->events_posted)); switch (event->type) { case NES_CM_EVENT_MPA_REQ: cm_event_mpa_req(event); nes_debug(NES_DBG_CM, "cm_node=%p CM Event: MPA REQUEST\n", - event->cm_node); + event->cm_node); break; case NES_CM_EVENT_RESET: nes_debug(NES_DBG_CM, "cm_node = %p CM Event: RESET\n", - event->cm_node); + event->cm_node); cm_event_reset(event); break; case NES_CM_EVENT_CONNECTED: if ((!event->cm_node->cm_id) || - (event->cm_node->state != NES_CM_STATE_TSA)) + (event->cm_node->state != NES_CM_STATE_TSA)) break; cm_event_connected(event); nes_debug(NES_DBG_CM, "CM Event: CONNECTED\n"); break; + case NES_CM_EVENT_MPA_REJECT: + if ((!event->cm_node->cm_id) || + (event->cm_node->state == NES_CM_STATE_TSA)) + break; + cm_event_mpa_reject(event); + nes_debug(NES_DBG_CM, "CM Event: REJECT\n"); + break; + case NES_CM_EVENT_ABORTED: if ((!event->cm_node->cm_id) || - (event->cm_node->state == NES_CM_STATE_TSA)) + (event->cm_node->state == NES_CM_STATE_TSA)) break; cm_event_connect_error(event); nes_debug(NES_DBG_CM, "CM Event: ABORTED\n"); |