/* * 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"); } href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&id=5aa3e24928bb95ddb159c5949f1c09493e9e8505'>diff
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authorDavid S. Miller <davem@davemloft.net>2016-06-27 10:05:55 -0400
committerDavid S. Miller <davem@davemloft.net>2016-06-27 10:05:55 -0400
commit5aa3e24928bb95ddb159c5949f1c09493e9e8505 (patch)
tree0eb4b93304fdeb3c99b98b60b0acbe4e8d47726c
parenta37503bc387ce2434106d4bf4870bd73081c7355 (diff)
parent71873a9b38d1cc6c93e2962149a7bb7272a7cb66 (diff)
Merge tag 'linux-can-fixes-for-4.7-20160623' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says: ==================== pull-request: can 2016-06-23 this is a pull request of 3 patches for the upcoming linux-4.7 release. The first two patches are by Oliver Hartkopp fixing oopes in the generic CAN device netlink handling. Jimmy Assarsson's patch for the kvaser_usb driver adds support for more devices by adding their USB product ids. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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