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 }; 22 23 struct rmnet_egress_agg_params { 24 u32 bytes; 25 u32 count; 26 u64 time_nsec; 27 }; 28 29 /* One instance of this structure is instantiated for each real_dev associated 30 * with rmnet. 31 */ 32 struct rmnet_port { 33 struct net_device *dev; 34 u32 data_format; 35 u8 nr_rmnet_devs; 36 u8 rmnet_mode; 37 struct hlist_head muxed_ep[RMNET_MAX_LOGICAL_EP]; 38 struct net_device *bridge_ep; 39 struct net_device *rmnet_dev; 40 41 /* Egress aggregation information */ 42 struct rmnet_egress_agg_params egress_agg_params; 43 /* Protect aggregation related elements */ 44 spinlock_t agg_lock; 45 struct sk_buff *skbagg_head; 46 struct sk_buff *skbagg_tail; 47 int agg_state; 48 u8 agg_count; 49 struct timespec64 agg_time; 50 struct timespec64 agg_last; 51 struct hrtimer hrtimer; 52 struct work_struct agg_wq; 53 }; 54 55 extern struct rtnl_link_ops rmnet_link_ops; 56 57 struct rmnet_vnd_stats { 58 u64 rx_pkts; 59 u64 rx_bytes; 60 u64 tx_pkts; 61 u64 tx_bytes; 62 u32 tx_drops; 63 }; 64 65 struct rmnet_pcpu_stats { 66 struct rmnet_vnd_stats stats; 67 struct u64_stats_sync syncp; 68 }; 69 70 struct rmnet_priv_stats { 71 u64 csum_ok; 72 u64 csum_ip4_header_bad; 73 u64 csum_valid_unset; 74 u64 csum_validation_failed; 75 u64 csum_err_bad_buffer; 76 u64 csum_err_invalid_ip_version; 77 u64 csum_err_invalid_transport; 78 u64 csum_fragmented_pkt; 79 u64 csum_skipped; 80 u64 csum_sw; 81 u64 csum_hw; 82 }; 83 84 struct rmnet_priv { 85 u8 mux_id; 86 struct net_device *real_dev; 87 struct rmnet_pcpu_stats __percpu *pcpu_stats; 88 struct gro_cells gro_cells; 89 struct rmnet_priv_stats stats; 90 }; 91 92 struct rmnet_port *rmnet_get_port_rcu(struct net_device *real_dev); 93 struct rmnet_endpoint *rmnet_get_endpoint(struct rmnet_port *port, u8 mux_id); 94 int rmnet_add_bridge(struct net_device *rmnet_dev, 95 struct net_device *slave_dev, 96 struct netlink_ext_ack *extack); 97 int rmnet_del_bridge(struct net_device *rmnet_dev, 98 struct net_device *slave_dev); 99 struct rmnet_port* 100 rmnet_get_port_rtnl(const struct net_device *real_dev); 101 #endif /* _RMNET_CONFIG_H_ */ 102