/* * netsniff-ng - the packet sniffing beast * Copyright 2009 - 2013 Daniel Borkmann. * Subject to the GPL, version 2. */ #include #include #include #include #include #include #include "pcap_io.h" #include "built_in.h" #include "xutils.h" #include "xio.h" #include "die.h" static ssize_t pcap_rw_write(int fd, pcap_pkthdr_t *phdr, enum pcap_type type, const uint8_t *packet, size_t len) { ssize_t ret, hdrsize = pcap_get_hdr_length(phdr, type), hdrlen = 0; ret = write_or_die(fd, &phdr->raw, hdrsize); if (unlikely(ret != hdrsize)) panic("Failed to write pkt header!\n"); hdrlen = pcap_get_length(phdr, type); if (unlikely(hdrlen != len)) return -EINVAL; ret = write_or_die(fd, packet, hdrlen); if (unlikely(ret != hdrlen)) panic("Failed to write pkt payload!\n"); return hdrsize + hdrlen; } static ssize_t pcap_rw_read(int fd, pcap_pkthdr_t *phdr, enum pcap_type type, uint8_t *packet, size_t len) { ssize_t ret, hdrsize = pcap_get_hdr_length(phdr, type), hdrlen = 0; ret = read_or_die(fd, &phdr->raw, hdrsize); if (unlikely(ret != hdrsize)) return -EIO; hdrlen = pcap_get_length(phdr, type); if (unlikely(hdrlen == 0 || hdrlen > len)) return -EINVAL; ret = read(fd, packet, hdrlen); if (unlikely(ret != hdrlen)) return -EIO; return hdrsize + hdrlen; } static int pcap_rw_prepare_access(int fd, enum pcap_mode mode, bool jumbo) { set_ioprio_rt(); return 0; } static void pcap_rw_fsync(int fd) { fdatasync(fd); } const struct pcap_file_ops pcap_rw_ops = { .pull_fhdr_pcap = pcap_generic_pull_fhdr, .push_fhdr_pcap = pcap_generic_push_fhdr, .prepare_access_pcap = pcap_rw_prepare_access, .read_pcap = pcap_rw_read, .write_pcap = pcap_rw_write, .fsync_pcap = pcap_rw_fsync, }; tree commit diff

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author	Lucas Stach <l.stach@pengutronix.de>	2016-11-08 17:04:10 +0100
committer	Philipp Zabel <p.zabel@pengutronix.de>	2016-11-09 10:35:50 +0100
commit	5ced937b7d8dae2c6a536112abaad6352769a931 (patch)
tree	ea19cfe781362971eda6e26e26c774ac3d4bd724 /Documentation
parent	86126748cd5063aa888ce252f16b89b35e7d4707 (diff)

drm/imx: disable planes before DC

If the DC clock is disabled before the attached IDMACs are properly stopped the IDMACs may hang the IPU or even the whole system. Make sure the IDMACs are in safe state by disabling the planes before removal of the DC clock. Also set the atomic parameter to false to stop calling the atomic_begin hook, which does nothing useful as we immediately afterwards turn off vblank interrupts and possibly send the pending vblank event. Fixes: 33f14235302f (drm/imx: atomic phase 1: Use transitional atomic CRTC and plane helpers) Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

Diffstat (limited to 'Documentation')