/* * common eBPF ELF operations. * * Copyright (C) 2013-2015 Alexei Starovoitov * Copyright (C) 2015 Wang Nan * Copyright (C) 2015 Huawei Inc. * * This program 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; * version 2.1 of the License (not later!) * * This program 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 program; if not, see */ #include #include #include #include #include #include "bpf.h" /* * When building perf, unistd.h is overrided. __NR_bpf is * required to be defined explicitly. */ #ifndef __NR_bpf # if defined(__i386__) # define __NR_bpf 357 # elif defined(__x86_64__) # define __NR_bpf 321 # elif defined(__aarch64__) # define __NR_bpf 280 # else # error __NR_bpf not defined. libbpf does not support your arch. # endif #endif static __u64 ptr_to_u64(void *ptr) { return (__u64) (unsigned long) ptr; } static int sys_bpf(enum bpf_cmd cmd, union bpf_attr *attr, unsigned int size) { return syscall(__NR_bpf, cmd, attr, size); } int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size, int max_entries, __u32 map_flags) { union bpf_attr attr; memset(&attr, '\0', sizeof(attr)); attr.map_type = map_type; attr.key_size = key_size; attr.value_size = value_size; attr.max_entries = max_entries; attr.map_flags = map_flags; return sys_bpf(BPF_MAP_CREATE, &attr, sizeof(attr)); } int bpf_load_program(enum bpf_prog_type type, struct bpf_insn *insns, size_t insns_cnt, char *license, __u32 kern_version, char *log_buf, size_t log_buf_sz) { int fd; union bpf_attr attr; bzero(&attr, sizeof(attr)); attr.prog_type = type; attr.insn_cnt = (__u32)insns_cnt; attr.insns = ptr_to_u64(insns); attr.license = ptr_to_u64(license); attr.log_buf = ptr_to_u64(NULL); attr.log_size = 0; attr.log_level = 0; attr.kern_version = kern_version; fd = sys_bpf(BPF_PROG_LOAD, &attr, sizeof(attr)); if (fd >= 0 || !log_buf || !log_buf_sz) return fd; /* Try again with log */ attr.log_buf = ptr_to_u64(log_buf); attr.log_size = log_buf_sz; attr.log_level = 1; log_buf[0] = 0; return sys_bpf(BPF_PROG_LOAD, &attr, sizeof(attr)); } int bpf_map_update_elem(int fd, void *key, void *value, __u64 flags) { union bpf_attr attr; bzero(&attr, sizeof(attr)); attr.map_fd = fd; attr.key = ptr_to_u64(key); attr.value = ptr_to_u64(value); attr.flags = flags; return sys_bpf(BPF_MAP_UPDATE_ELEM, &attr, sizeof(attr)); } int bpf_map_lookup_elem(int fd, void *key, void *value) { union bpf_attr attr; bzero(&attr, sizeof(attr)); attr.map_fd = fd; attr.key = ptr_to_u64(key); attr.value = ptr_to_u64(value); return sys_bpf(BPF_MAP_LOOKUP_ELEM, &attr, sizeof(attr)); } int bpf_map_delete_elem(int fd, void *key) { union bpf_attr attr; bzero(&attr, sizeof(attr)); attr.map_fd = fd; attr.key = ptr_to_u64(key); return sys_bpf(BPF_MAP_DELETE_ELEM, &attr, sizeof(attr)); } int bpf_map_get_next_key(int fd, void *key, void *next_key) { union bpf_attr attr; bzero(&attr, sizeof(attr)); attr.map_fd = fd; attr.key = ptr_to_u64(key); attr.next_key = ptr_to_u64(next_key); return sys_bpf(BPF_MAP_GET_NEXT_KEY, &attr, sizeof(attr)); } int bpf_obj_pin(int fd, const char *pathname) { union bpf_attr attr; bzero(&attr, sizeof(attr)); attr.pathname = ptr_to_u64((void *)pathname); attr.bpf_fd = fd; return sys_bpf(BPF_OBJ_PIN, &attr, sizeof(attr)); } int bpf_obj_get(const char *pathname) { union bpf_attr attr; bzero(&attr, sizeof(attr)); attr.pathname = ptr_to_u64((void *)pathname); return sys_bpf(BPF_OBJ_GET, &attr, sizeof(attr)); } int bpf_prog_attach(int prog_fd, int target_fd, enum bpf_attach_type type) { union bpf_attr attr; bzero(&attr, sizeof(attr)); attr.target_fd = target_fd; attr.attach_bpf_fd = prog_fd; attr.attach_type = type; return sys_bpf(BPF_PROG_ATTACH, &attr, sizeof(attr)); } int bpf_prog_detach(int target_fd, enum bpf_attach_type type) { union bpf_attr attr; bzero(&attr, sizeof(attr)); attr.target_fd = target_fd; attr.attach_type = type; return sys_bpf(BPF_PROG_DETACH, &attr, sizeof(attr)); } lected'>unified
authorNicolae Rosia <Nicolae_Rosia@mentor.com>2016-11-12 14:42:14 +0200
committerMark Brown <broonie@kernel.org>2016-11-16 18:03:39 +0000
commitdab780a3b489b038a47d8fbbc49c33aae1e7a682 (patch)
treec9599a6970c187f95f7875d2a3e948f05cef1e45 /net/ipv4/arp.c
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: twl-regulator: rework fixed regulator definition
TWL603X and TWL4030 are different and have different code logic. Rework the regulator definition method so we can split the file easily in twl4030 and twl6030. Signed-off-by: Nicolae Rosia <Nicolae_Rosia@mentor.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'net/ipv4/arp.c')