ebpf/ebpf_rss.h

   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 #define EBPF_RSS_MAX_FDS 4
  18
  19 struct EBPFRSSContext {
  20     void *obj;
  21     int program_fd;
  22     int map_configuration;
  23     int map_toeplitz_key;
  24     int map_indirections_table;
  25
  26     /* mapped eBPF maps for direct access to omit bpf_map_update_elem() */
  27     void *mmap_configuration;
  28     void *mmap_toeplitz_key;
  29     void *mmap_indirections_table;
  30 };
  31
  32 struct EBPFRSSConfig {
  33     uint8_t redirect;
  34     uint8_t populate_hash;
  35     uint32_t hash_types;
  36     uint16_t indirections_len;
  37     uint16_t default_queue;
  38 } __attribute__((packed));
  39
  40 void ebpf_rss_init(struct EBPFRSSContext *ctx);
  41
  42 bool ebpf_rss_is_loaded(struct EBPFRSSContext *ctx);
  43
  44 bool ebpf_rss_load(struct EBPFRSSContext *ctx);
  45
  46 bool ebpf_rss_load_fds(struct EBPFRSSContext *ctx, int program_fd,
  47                        int config_fd, int toeplitz_fd, int table_fd);
  48
  49 bool ebpf_rss_set_all(struct EBPFRSSContext *ctx, struct EBPFRSSConfig *config,
  50                       uint16_t *indirections_table, uint8_t *toeplitz_key);
  51
  52 void ebpf_rss_unload(struct EBPFRSSContext *ctx);
  53
  54 #endif /* QEMU_EBPF_RSS_H */