/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010 Daniel Borkmann. * Copyright 2014, 2015 Tobias Klauser * Subject to the GPL, version 2. */ #include #include #include #include #include #include #include #include #include #include "xmalloc.h" #include "die.h" #include "ring.h" #include "built_in.h" void setup_ring_layout_generic(struct ring *ring, size_t size, bool jumbo_support) { fmemset(&ring->layout, 0, sizeof(ring->layout)); ring->layout.tp_block_size = (jumbo_support ? RUNTIME_PAGE_SIZE << 4 : RUNTIME_PAGE_SIZE << 2); ring->layout.tp_frame_size = (jumbo_support ? TPACKET_ALIGNMENT << 12 : TPACKET_ALIGNMENT << 7); ring->layout.tp_block_nr = size / ring->layout.tp_block_size; ring->layout.tp_frame_nr = size / ring->layout.tp_frame_size; } void mmap_ring_generic(int sock, struct ring *ring) { ring->mm_space = mmap(NULL, ring->mm_len, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED | MAP_POPULATE, sock, 0); if (ring->mm_space == MAP_FAILED) panic("Cannot mmap {TX,RX}_RING!\n"); } void alloc_ring_frames_generic(struct ring *ring, size_t num, size_t size) { size_t i, len = num * sizeof(*ring->frames); ring->frames = xmalloc_aligned(len, CO_CACHE_LINE_SIZE); fmemset(ring->frames, 0, len); for (i = 0; i < num; ++i) { ring->frames[i].iov_len = size; ring->frames[i].iov_base = ring->mm_space + (i * size); } } void bind_ring_generic(int sock, struct ring *ring, int ifindex, bool tx_only) { int ret; /* The {TX,RX}_RING registers itself to the networking stack with * dev_add_pack(), so we have one single RX_RING for all devs * otherwise you'll get the packet twice. */ fmemset(&ring->s_ll, 0, sizeof(ring->s_ll)); ring->s_ll.sll_family = AF_PACKET; ring->s_ll.sll_ifindex = ifindex; ring->s_ll.sll_protocol = tx_only ? 0 : htons(ETH_P_ALL); ret = bind(sock, (struct sockaddr *) &ring->s_ll, sizeof(ring->s_ll)); if (ret < 0) panic("Cannot bind {TX,RX}_RING!\n"); } '>commitdiff
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authorLars-Peter Clausen <lars@metafoo.de>2016-02-04 17:13:29 +0100
committerMark Brown <broonie@kernel.org>2016-02-05 18:12:47 +0000
commit2ec3b6287b12a7131c28cd9408b368cd451bdc48 (patch)
tree289e514bdf4dcac94ab4ca3a7d29c7ec48cde5d8 /Documentation
parente32bb8709fce66ff7f392a33d7689402d3e2ba2e (diff)
spi: axi: Add bindings documentation for Analog Devices axi-spi-engine
Add the devicetree bindings documentation for the Analog Devices axi-spi-engine SPI master peripheral. This is a soft-peripheral used in FPGAs. The external interfaces of the peripheral are: * A memory mapped register map which is used to configure the peripheral. * One interrupt. * Two clocks, one for the memory mapped register interface and one for the SPI bus. * A SPI master interface to which the slave devices are connected. These interfaces are described by the devicetree bindings accordingly. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation')