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RDMA/nes: Report the actual address of the remote connecting peer

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Get the actual (non-mapped) ip/tcp address of the connecting peer from
the port mapper and report the address info to the user space application
at the time of connection establishment

Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Tatyana Nikolova 2015-04-21 16:28:25 -04:00 committed by Doug Ledford
parent 6eec177461
commit 230da36ae9
2 changed files with 48 additions and 16 deletions
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1
drivers/infiniband/hw/nes/nes.c
View file

@ -116,6 +116,7 @@ static struct ibnl_client_cbs nes_nl_cb_table[] = {
[RDMA_NL_IWPM_REG_PID] = {.dump = iwpm_register_pid_cb},
[RDMA_NL_IWPM_ADD_MAPPING] = {.dump = iwpm_add_mapping_cb},
[RDMA_NL_IWPM_QUERY_MAPPING] = {.dump = iwpm_add_and_query_mapping_cb},
[RDMA_NL_IWPM_REMOTE_INFO] = {.dump = iwpm_remote_info_cb},
[RDMA_NL_IWPM_HANDLE_ERR] = {.dump = iwpm_mapping_error_cb},
[RDMA_NL_IWPM_MAPINFO] = {.dump = iwpm_mapping_info_cb},
[RDMA_NL_IWPM_MAPINFO_NUM] = {.dump = iwpm_ack_mapping_info_cb}

63
drivers/infiniband/hw/nes/nes_cm.c
View file

@ -596,27 +596,52 @@ static void nes_form_reg_msg(struct nes_vnic *nesvnic,
memcpy(pm_msg->if_name, nesvnic->netdev->name, IWPM_IFNAME_SIZE);
}
static void record_sockaddr_info(struct sockaddr_storage *addr_info,
nes_addr_t *ip_addr, u16 *port_num)
{
struct sockaddr_in *in_addr = (struct sockaddr_in *)addr_info;
if (in_addr->sin_family == AF_INET) {
*ip_addr = ntohl(in_addr->sin_addr.s_addr);
*port_num = ntohs(in_addr->sin_port);
}
}
/*
* 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;
record_sockaddr_info(&pm_msg->mapped_loc_addr,
&cm_info->mapped_loc_addr, &cm_info->mapped_loc_port);
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);
}
record_sockaddr_info(&pm_msg->mapped_rem_addr,
&cm_info->mapped_rem_addr, &cm_info->mapped_rem_port);
}
/*
* nes_get_reminfo - Get the address info of the remote connecting peer
*/
static int nes_get_remote_addr(struct nes_cm_node *cm_node)
{
struct sockaddr_storage mapped_loc_addr, mapped_rem_addr;
struct sockaddr_storage remote_addr;
int ret;
nes_create_sockaddr(htonl(cm_node->mapped_loc_addr),
htons(cm_node->mapped_loc_port), &mapped_loc_addr);
nes_create_sockaddr(htonl(cm_node->mapped_rem_addr),
htons(cm_node->mapped_rem_port), &mapped_rem_addr);
ret = iwpm_get_remote_info(&mapped_loc_addr, &mapped_rem_addr,
&remote_addr, RDMA_NL_NES);
if (ret)
nes_debug(NES_DBG_CM, "Unable to find remote peer address info\n");
else
record_sockaddr_info(&remote_addr, &cm_node->rem_addr,
&cm_node->rem_port);
return ret;
}
/**
@ -1566,9 +1591,14 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core,
return NULL;
/* set our node specific transport info */
cm_node->loc_addr = cm_info->loc_addr;
if (listener) {
cm_node->loc_addr = listener->loc_addr;
cm_node->loc_port = listener->loc_port;
} else {
cm_node->loc_addr = cm_info->loc_addr;
cm_node->loc_port = cm_info->loc_port;
}
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->mapped_loc_addr = cm_info->mapped_loc_addr;
@ -2151,6 +2181,7 @@ static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
cm_node->state = NES_CM_STATE_ESTABLISHED;
if (datasize) {
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
nes_get_remote_addr(cm_node);
handle_rcv_mpa(cm_node, skb);
} else { /* rcvd ACK only */
dev_kfree_skb_any(skb);