| 1 | /* |
| 2 | * eBPF RSS header |
| 3 | * |
| 4 | * Developed by Daynix Computing LTD (http://www.daynix.com) |
| 5 | * |
| 6 | * Authors: |
| 7 | * Andrew Melnychenko <andrew@daynix.com> |
| 8 | * Yuri Benditovich <yuri.benditovich@daynix.com> |
| 9 | * |
| 10 | * This work is licensed under the terms of the GNU GPL, version 2. See |
| 11 | * the COPYING file in the top-level directory. |
| 12 | */ |
| 13 | |
| 14 | #ifndef QEMU_EBPF_RSS_H |
| 15 | #define QEMU_EBPF_RSS_H |
| 16 | |
| 17 | #include "qapi/error.h" |
| 18 | |
| 19 | #define EBPF_RSS_MAX_FDS 4 |
| 20 | |
| 21 | struct EBPFRSSContext { |
| 22 | void *obj; |
| 23 | int program_fd; |
| 24 | int map_configuration; |
| 25 | int map_toeplitz_key; |
| 26 | int map_indirections_table; |
| 27 | |
| 28 | /* mapped eBPF maps for direct access to omit bpf_map_update_elem() */ |
| 29 | void *mmap_configuration; |
| 30 | void *mmap_toeplitz_key; |
| 31 | void *mmap_indirections_table; |
| 32 | }; |
| 33 | |
| 34 | struct EBPFRSSConfig { |
| 35 | uint8_t redirect; |
| 36 | uint8_t populate_hash; |
| 37 | uint32_t hash_types; |
| 38 | uint16_t indirections_len; |
| 39 | uint16_t default_queue; |
| 40 | } __attribute__((packed)); |
| 41 | |
| 42 | void ebpf_rss_init(struct EBPFRSSContext *ctx); |
| 43 | |
| 44 | bool ebpf_rss_is_loaded(struct EBPFRSSContext *ctx); |
| 45 | |
| 46 | bool ebpf_rss_load(struct EBPFRSSContext *ctx, Error **errp); |
| 47 | |
| 48 | bool ebpf_rss_load_fds(struct EBPFRSSContext *ctx, int program_fd, |
| 49 | int config_fd, int toeplitz_fd, int table_fd, |
| 50 | Error **errp); |
| 51 | |
| 52 | bool ebpf_rss_set_all(struct EBPFRSSContext *ctx, struct EBPFRSSConfig *config, |
| 53 | uint16_t *indirections_table, uint8_t *toeplitz_key, |
| 54 | Error **errp); |
| 55 | |
| 56 | void ebpf_rss_unload(struct EBPFRSSContext *ctx); |
| 57 | |
| 58 | #endif /* QEMU_EBPF_RSS_H */ |