blob: 17fedbd3b76505c35cff0025d910fd4759b6d967 [file] [log] [blame]
/*
**************************************************************************
* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all copies.
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
**************************************************************************
*/
#include "nss_tx_rx_common.h"
/*
* nss_sjack_node_sync_update()
* Update sjack node stats.
*/
static void nss_sjack_node_sync_update(struct nss_ctx_instance *nss_ctx, struct nss_sjack_stats_sync_msg *nins)
{
struct nss_top_instance *nss_top = nss_ctx->nss_top;
/*
* Update SJACK node stats.
*/
spin_lock_bh(&nss_top->stats_lock);
nss_top->stats_node[NSS_SJACK_INTERFACE][NSS_STATS_NODE_RX_PKTS] += nins->node_stats.rx_packets;
nss_top->stats_node[NSS_SJACK_INTERFACE][NSS_STATS_NODE_RX_BYTES] += nins->node_stats.rx_bytes;
nss_top->stats_node[NSS_SJACK_INTERFACE][NSS_STATS_NODE_RX_DROPPED] += nins->node_stats.rx_dropped;
nss_top->stats_node[NSS_SJACK_INTERFACE][NSS_STATS_NODE_TX_PKTS] += nins->node_stats.tx_packets;
nss_top->stats_node[NSS_SJACK_INTERFACE][NSS_STATS_NODE_TX_BYTES] += nins->node_stats.tx_bytes;
spin_unlock_bh(&nss_top->stats_lock);
}
/*
* nss_sjack_handler()
* Handle NSS -> HLOS messages for sjack
*/
static void nss_sjack_handler(struct nss_ctx_instance *nss_ctx, struct nss_cmn_msg *ncm,
__attribute__((unused))void *app_data)
{
void *ctx;
nss_sjack_msg_callback_t cb;
struct nss_sjack_msg *nsm = (struct nss_sjack_msg *)ncm;
BUG_ON(ncm->interface != NSS_SJACK_INTERFACE);
/*
* Is this a valid request/response packet?
*/
if (ncm->type >= NSS_SJACK_MAX_MSG_TYPE) {
nss_warning("%p: received invalid message %d for sjack interface", nss_ctx, ncm->type);
return;
}
if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_sjack_msg)) {
nss_warning("%p: Length of message is greater than required: %d", nss_ctx, nss_cmn_get_msg_len(ncm));
return;
}
/*
* Update the callback and app_data for NOTIFY messages, sjack sends all notify messages
* to the same callback/app_data.
*/
if (ncm->response == NSS_CMM_RESPONSE_NOTIFY) {
ncm->cb = (nss_ptr_t)nss_ctx->nss_top->if_rx_msg_callback[ncm->interface];
}
/*
* Log failures
*/
nss_core_log_msg_failures(nss_ctx, ncm);
switch (ncm->type) {
case NSS_SJACK_STATS_SYNC_MSG:
/*
* Update sjack statistics on node sync.
*/
nss_sjack_node_sync_update(nss_ctx, &nsm->msg.stats_sync);
break;
}
/*
* Do we have a call back
*/
if (!ncm->cb) {
return;
}
/*
* callback
*/
cb = (nss_sjack_msg_callback_t)ncm->cb;
ctx = nss_ctx->subsys_dp_register[ncm->interface].ndev;
cb(ctx, ncm);
}
/*
* nss_sjack_tx_msg()
* Transmit a sjack message to NSSFW
*/
nss_tx_status_t nss_sjack_tx_msg(struct nss_ctx_instance *nss_ctx, struct nss_sjack_msg *msg)
{
struct nss_sjack_msg *nm;
struct nss_cmn_msg *ncm = &msg->cm;
struct sk_buff *nbuf;
int32_t status;
NSS_VERIFY_CTX_MAGIC(nss_ctx);
if (unlikely(nss_ctx->state != NSS_CORE_STATE_INITIALIZED)) {
nss_warning("%p: sjack msg dropped as core not ready", nss_ctx);
return NSS_TX_FAILURE_NOT_READY;
}
/*
* Sanity check the message
*/
if (ncm->interface != NSS_SJACK_INTERFACE) {
nss_warning("%p: tx request for another interface: %d", nss_ctx, ncm->interface);
return NSS_TX_FAILURE;
}
if (ncm->type > NSS_SJACK_MAX_MSG_TYPE) {
nss_warning("%p: message type out of range: %d", nss_ctx, ncm->type);
return NSS_TX_FAILURE;
}
if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_sjack_msg)) {
nss_warning("%p: message length is invalid: %d", nss_ctx, nss_cmn_get_msg_len(ncm));
return NSS_TX_FAILURE;
}
nbuf = dev_alloc_skb(NSS_NBUF_PAYLOAD_SIZE);
if (unlikely(!nbuf)) {
NSS_PKT_STATS_INCREMENT(nss_ctx, &nss_ctx->nss_top->stats_drv[NSS_STATS_DRV_NBUF_ALLOC_FAILS]);
nss_warning("%p: msg dropped as command allocation failed", nss_ctx);
return NSS_TX_FAILURE;
}
/*
* Copy the message to our skb
*/
nm = (struct nss_sjack_msg *)skb_put(nbuf, sizeof(struct nss_sjack_msg));
memcpy(nm, msg, sizeof(struct nss_sjack_msg));
status = nss_core_send_buffer(nss_ctx, 0, nbuf, NSS_IF_CMD_QUEUE, H2N_BUFFER_CTRL, 0);
if (status != NSS_CORE_STATUS_SUCCESS) {
dev_kfree_skb_any(nbuf);
nss_warning("%p: Unable to enqueue 'sjack message' \n", nss_ctx);
return NSS_TX_FAILURE;
}
nss_hal_send_interrupt(nss_ctx, NSS_H2N_INTR_DATA_COMMAND_QUEUE);
NSS_PKT_STATS_INCREMENT(nss_ctx, &nss_ctx->nss_top->stats_drv[NSS_STATS_DRV_TX_CMD_REQ]);
return NSS_TX_SUCCESS;
}
/*
* nss_sjack_register_if()
*/
struct nss_ctx_instance *nss_sjack_register_if(uint32_t if_num, struct net_device *netdev,
nss_sjack_msg_callback_t event_callback)
{
struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.sjack_handler_id];
nss_assert(nss_ctx);
nss_assert(if_num == NSS_SJACK_INTERFACE);
nss_ctx->subsys_dp_register[if_num].ndev = netdev;
nss_top_main.if_rx_msg_callback[if_num] = event_callback;
return nss_ctx;
}
/*
* nss_sjack_unregister_if()
*/
void nss_sjack_unregister_if(uint32_t if_num)
{
struct nss_ctx_instance *nss_ctx = (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.sjack_handler_id];
nss_assert(nss_ctx);
nss_assert(if_num == NSS_SJACK_INTERFACE);
nss_ctx->subsys_dp_register[if_num].ndev = NULL;
nss_top_main.if_rx_msg_callback[if_num] = NULL;
return;
}
/*
* nss_sjack_get_context()
* get NSS context instance for sjack
*/
struct nss_ctx_instance *nss_sjack_get_context(void)
{
return &nss_top_main.nss[nss_top_main.sjack_handler_id];
}
EXPORT_SYMBOL(nss_sjack_get_context);
/*
* nss_sjack_register_handler()
* Registering handler for sending msg to sjack node on NSS.
*/
void nss_sjack_register_handler(void)
{
struct nss_ctx_instance *nss_ctx = nss_sjack_get_context();
nss_core_register_handler(nss_ctx, NSS_SJACK_INTERFACE, nss_sjack_handler, NULL);
}
EXPORT_SYMBOL(nss_sjack_register_if);
EXPORT_SYMBOL(nss_sjack_unregister_if);
EXPORT_SYMBOL(nss_sjack_tx_msg);