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/* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _RMNET_PERF_OPT_H_
#define _RMNET_PERF_OPT_H_
#include <linux/skbuff.h>
#include "rmnet_perf_core.h"
#define RMNET_PERF_FLOW_HASH_TABLE_BITS 4
#define RMNET_PERF_NUM_FLOW_NODES 8
struct rmnet_perf_opt_pkt_node {
unsigned char *header_start;
unsigned char *data_start;
struct rmnet_frag_descriptor *frag_desc;
u16 data_len;
};
struct rmnet_perf_opt_ip_flags {
u8 ip_ttl;
u8 ip_tos;
u16 ip_frag_off;
};
struct rmnet_perf_opt_flow_node {
/* Header lengths */
u8 ip_len;
u8 trans_len;
/* Header protocols */
u8 ip_proto;
u8 trans_proto;
/* Ports */
__be16 src_port;
__be16 dest_port;
/* IP addresses */
union {
__be32 saddr4;
struct in6_addr saddr6;
} saddr;
union {
__be32 daddr4;
struct in6_addr daddr6;
} daddr;
/* IP flags */
union {
struct rmnet_perf_opt_ip_flags ip4_flags;
__be32 first_word;
} ip_flags;
/* TCP metadata */
__be32 next_seq;
/* GSO metadata */
u32 gso_len;
/* Perf metadata */
u8 num_pkts_held;
u32 len;
u32 hash_value;
struct rmnet_endpoint *ep;
struct hlist_node list;
/* The packets we're holding */
struct rmnet_perf_opt_pkt_node pkt_list[50];
};
struct rmnet_perf_opt_flow_node_pool {
u8 num_flows_in_use;
u16 flow_recycle_counter;
struct rmnet_perf_opt_flow_node *
node_list[RMNET_PERF_NUM_FLOW_NODES];
};
struct rmnet_perf_opt_meta {
struct rmnet_perf_opt_flow_node_pool *node_pool;
};
enum rmnet_perf_opt_flush_reasons {
RMNET_PERF_OPT_PACKET_CORRUPT_ERROR,
RMNET_PERF_OPT_CHAIN_END,
RMNET_PERF_OPT_NUM_CONDITIONS
};
void
rmnet_perf_opt_update_flow(struct rmnet_perf_opt_flow_node *flow_node,
struct rmnet_perf_pkt_info *pkt_info);
void rmnet_perf_opt_flush_single_flow_node(
struct rmnet_perf_opt_flow_node *flow_node);
void rmnet_perf_opt_flush_flow_by_hash(u32 hash_val);
void rmnet_perf_opt_flush_all_flow_nodes(void);
void rmnet_perf_opt_chain_end(void);
void rmnet_perf_opt_insert_pkt_in_flow(
struct rmnet_perf_opt_flow_node *flow_node,
struct rmnet_perf_pkt_info *pkt_info);
bool rmnet_perf_opt_ingress(struct rmnet_perf_pkt_info *pkt_info);
void rmnet_perf_free_hash_table(void);
#endif /* _RMNET_PERF_OPT_H_ */
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