/* Copyright (c) 2016 Sargun Dhillon * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ #include #include #include #include #include "bpf_helpers.h" struct bpf_map_def SEC("maps") dnat_map = { .type = BPF_MAP_TYPE_HASH, .key_size = sizeof(struct sockaddr_in), .value_size = sizeof(struct sockaddr_in), .max_entries = 256, }; /* kprobe is NOT a stable ABI * kernel functions can be removed, renamed or completely change semantics. * Number of arguments and their positions can change, etc. * In such case this bpf+kprobe example will no longer be meaningful * * This example sits on a syscall, and the syscall ABI is relatively stable * of course, across platforms, and over time, the ABI may change. */ SEC("kprobe/sys_connect") int bpf_prog1(struct pt_regs *ctx) { struct sockaddr_in new_addr, orig_addr = {}; struct sockaddr_in *mapped_addr; void *sockaddr_arg = (void *)PT_REGS_PARM2(ctx); int sockaddr_len = (int)PT_REGS_PARM3(ctx); if (sockaddr_len > sizeof(orig_addr)) return 0; if (bpf_probe_read(&orig_addr, sizeof(orig_addr), sockaddr_arg) != 0) return 0; mapped_addr = bpf_map_lookup_elem(&dnat_map, &orig_addr); if (mapped_addr != NULL) { memcpy(&new_addr, mapped_addr, sizeof(new_addr)); bpf_probe_write_user(sockaddr_arg, &new_addr, sizeof(new_addr)); } return 0; } char _license[] SEC("license") = "GPL"; u32 _version SEC("version") = LINUX_VERSION_CODE; e43954e938133'>refslogtreecommitdiff
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authorLinus Walleij <linus.walleij@linaro.org>2016-11-12 15:22:38 +0100
committerMark Brown <broonie@kernel.org>2016-11-13 09:22:37 +0000
commit295070e9aa015abb9b92cccfbb1e43954e938133 (patch)
treed0a08e7ce280bc877e22424437dbe59fa1857d9a /include/uapi/scsi/scsi_bsg_fc.h
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: stw481x-vmmc: fix ages old enable error
The regulator has never been properly enabled, it has been dormant all the time. It's strange that MMC was working at all, but it likely worked by the signals going through the levelshifter and reaching the card anyways. Fixes: 3615a34ea1a6 ("regulator: add STw481x VMMC driver") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
Diffstat (limited to 'include/uapi/scsi/scsi_bsg_fc.h')