teamd/teamd_bpf_chef.h

/*
 *   teamd_bpf_chef.h - Cooking BPF functions for teamd
 *   Copyright (C) 2012-2015 Jiri Pirko <jiri@resnulli.us>
 *
 *   This library is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *   Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef _TEAMD_BPF_CHEF_H_
#define _TEAMD_BPF_CHEF_H_

#include <stdint.h>
#include <sys/types.h>

enum hashing_protos {
	PROTO_ETH,
	PROTO_VLAN,
	PROTO_IP,
	PROTO_IPV4,
	PROTO_IPV6,
	PROTO_L3,
	PROTO_TCP,
	PROTO_UDP,
	PROTO_SCTP,
	PROTO_L4,
};

/*
 * Description of to-be-compiled BPF function.
 * Pattern will be used to check if packet matches that. If not, nothing is
 * done. If yes, final hash will be computed from given fields.
 */
struct teamd_bpf_desc_frag {
	char *					name;
	enum hashing_protos			hproto;
};

void teamd_bpf_desc_compile_start(struct sock_fprog *fprog);
void teamd_bpf_desc_compile_release(struct sock_fprog *fprog);
int teamd_bpf_desc_compile(struct sock_fprog *fprog);
int teamd_bpf_desc_compile_finish(struct sock_fprog *fprog);
int teamd_bpf_desc_add_frag(struct sock_fprog *fprog,
			    const struct teamd_bpf_desc_frag *frag);

#endif /* _TEAMD_BPF_CHEF_H_ */