1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Copyright (c) 2013-2014, 2016-2018, 2021 The Linux Foundation. 3 * All rights reserved. 4 * 5 * RMNET Data configuration engine 6 */ 7 8 #include <linux/skbuff.h> 9 #include <linux/time.h> 10 #include <net/gro_cells.h> 11 12 #ifndef _RMNET_CONFIG_H_ 13 #define _RMNET_CONFIG_H_ 14 15 #define RMNET_MAX_LOGICAL_EP 255 16 17 struct rmnet_endpoint { 18 u8 mux_id; 19 struct net_device *egress_dev; 20 struct hlist_node hlnode; 21 struct rcu_head rcu; 22 }; 23 24 struct rmnet_egress_agg_params { 25 u32 bytes; 26 u32 count; 27 u64 time_nsec; 28 }; 29 30 /* One instance of this structure is instantiated for each real_dev associated 31 * with rmnet. 32 */ 33 struct rmnet_port { 34 struct net_device *dev; 35 u32 data_format; 36 u8 nr_rmnet_devs; 37 u8 rmnet_mode; 38 struct hlist_head muxed_ep[RMNET_MAX_LOGICAL_EP]; 39 struct net_device *bridge_ep; 40 struct net_device *rmnet_dev; 41 42 /* Egress aggregation information */ 43 struct rmnet_egress_agg_params egress_agg_params; 44 /* Protect aggregation related elements */ 45 spinlock_t agg_lock; 46 struct sk_buff *skbagg_head; 47 struct sk_buff *skbagg_tail; 48 int agg_state; 49 u8 agg_count; 50 struct timespec64 agg_time; 51 struct timespec64 agg_last; 52 struct hrtimer hrtimer; 53 struct work_struct agg_wq; 54 }; 55 56 extern struct rtnl_link_ops rmnet_link_ops; 57 58 struct rmnet_vnd_stats { 59 u64 rx_pkts; 60 u64 rx_bytes; 61 u64 tx_pkts; 62 u64 tx_bytes; 63 u32 tx_drops; 64 }; 65 66 struct rmnet_pcpu_stats { 67 struct rmnet_vnd_stats stats; 68 struct u64_stats_sync syncp; 69 }; 70 71 struct rmnet_priv_stats { 72 u64 csum_ok; 73 u64 csum_ip4_header_bad; 74 u64 csum_valid_unset; 75 u64 csum_validation_failed; 76 u64 csum_err_bad_buffer; 77 u64 csum_err_invalid_ip_version; 78 u64 csum_err_invalid_transport; 79 u64 csum_fragmented_pkt; 80 u64 csum_skipped; 81 u64 csum_sw; 82 u64 csum_hw; 83 }; 84 85 struct rmnet_priv { 86 u8 mux_id; 87 struct net_device *real_dev; 88 struct rmnet_pcpu_stats __percpu *pcpu_stats; 89 struct gro_cells gro_cells; 90 struct rmnet_priv_stats stats; 91 }; 92 93 struct rmnet_port *rmnet_get_port_rcu(struct net_device *real_dev); 94 struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id); 95 int rmnet_add_bridge(struct net_device *rmnet_dev, 96 struct net_device *slave_dev, 97 struct netlink_ext_ack *extack); 98 int rmnet_del_bridge(struct net_device *rmnet_dev, 99 struct net_device *slave_dev); 100 struct rmnet_port* 101 rmnet_get_port_rtnl(const struct net_device *real_dev); 102 #endif /* _RMNET_CONFIG_H_ */ 103