mirror of
https://gitlab.com/qemu-project/qemu
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0524ea0510
It allows using file descriptors of eBPF provided outside of QEMU. QEMU may be run without capabilities for eBPF and run RSS program provided by management tool(g.e. libvirt). Signed-off-by: Andrew Melnychenko <andrew@daynix.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/*
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* eBPF RSS header
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*
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* Developed by Daynix Computing LTD (http://www.daynix.com)
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*
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* Authors:
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* Andrew Melnychenko <andrew@daynix.com>
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* Yuri Benditovich <yuri.benditovich@daynix.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_EBPF_RSS_H
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#define QEMU_EBPF_RSS_H
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#define EBPF_RSS_MAX_FDS 4
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struct EBPFRSSContext {
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void *obj;
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int program_fd;
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int map_configuration;
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int map_toeplitz_key;
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int map_indirections_table;
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/* mapped eBPF maps for direct access to omit bpf_map_update_elem() */
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void *mmap_configuration;
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void *mmap_toeplitz_key;
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void *mmap_indirections_table;
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};
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struct EBPFRSSConfig {
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uint8_t redirect;
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uint8_t populate_hash;
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uint32_t hash_types;
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uint16_t indirections_len;
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uint16_t default_queue;
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} __attribute__((packed));
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void ebpf_rss_init(struct EBPFRSSContext *ctx);
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bool ebpf_rss_is_loaded(struct EBPFRSSContext *ctx);
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bool ebpf_rss_load(struct EBPFRSSContext *ctx);
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bool ebpf_rss_load_fds(struct EBPFRSSContext *ctx, int program_fd,
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int config_fd, int toeplitz_fd, int table_fd);
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bool ebpf_rss_set_all(struct EBPFRSSContext *ctx, struct EBPFRSSConfig *config,
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uint16_t *indirections_table, uint8_t *toeplitz_key);
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void ebpf_rss_unload(struct EBPFRSSContext *ctx);
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#endif /* QEMU_EBPF_RSS_H */
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