/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010 Daniel Borkmann. * Copyright 2009, 2010 Emmanuel Roullit. * Subject to the GPL, version 2. */ #include #include #include #include #include #include #include #include #include #include "die.h" #include "xmalloc.h" #include "ring_tx.h" #include "built_in.h" void set_packet_loss_discard(int sock) { int ret, discard = 1; ret = setsockopt(sock, SOL_PACKET, PACKET_LOSS, (void *) &discard, sizeof(discard)); if (ret < 0) panic("setsockopt: cannot set packet loss"); } void destroy_tx_ring(int sock, struct ring *ring) { int ret; munmap(ring->mm_space, ring->mm_len); ring->mm_len = 0; fmemset(&ring->layout, 0, sizeof(ring->layout)); ret = setsockopt(sock, SOL_PACKET, PACKET_TX_RING, &ring->layout, sizeof(ring->layout)); if (unlikely(ret)) panic("Cannot destroy the TX_RING: %s!\n", strerror(errno)); xfree(ring->frames); } void setup_tx_ring_layout(int sock, struct ring *ring, unsigned int size, int jumbo_support) { fmemset(&ring->layout, 0, sizeof(ring->layout)); ring->layout.tp_block_size = (jumbo_support ? getpagesize() << 4 : getpagesize() << 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 = ring->layout.tp_block_size / ring->layout.tp_frame_size * ring->layout.tp_block_nr; bug_on(ring->layout.tp_block_size < ring->layout.tp_frame_size); bug_on((ring->layout.tp_block_size % ring->layout.tp_frame_size) != 0); bug_on((ring->layout.tp_block_size % getpagesize()) != 0); } void create_tx_ring(int sock, struct ring *ring, int verbose) { int ret; set_sockopt_tpacket(sock); retry: ret = setsockopt(sock, SOL_PACKET, PACKET_TX_RING, &ring->layout, sizeof(ring->layout)); if (errno == ENOMEM && ring->layout.tp_block_nr > 1) { ring->layout.tp_block_nr >>= 1; ring->layout.tp_frame_nr = ring->layout.tp_block_size / ring->layout.tp_frame_size * ring->layout.tp_block_nr; goto retry; } if (ret < 0) panic("Cannot allocate TX_RING!\n"); ring->mm_len = ring->layout.tp_block_size * ring->layout.tp_block_nr; if (verbose) { printf("TX: %.2Lf MiB, %u Frames, each %u Byte allocated\n", (long double) ring->mm_len / (1 << 20), ring->layout.tp_frame_nr, ring->layout.tp_frame_size); } } void mmap_tx_ring(int sock, struct ring *ring) { ring->mm_space = mmap(0, ring->mm_len, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED | MAP_POPULATE, sock, 0); if (ring->mm_space == MAP_FAILED) { destroy_tx_ring(sock, ring); panic("Cannot mmap TX_RING!\n"); } } void alloc_tx_ring_frames(struct ring *ring) { int i; size_t len = ring->layout.tp_frame_nr * sizeof(*ring->frames); ring->frames = xmalloc_aligned(len, CO_CACHE_LINE_SIZE); fmemset(ring->frames, 0, len); for (i = 0; i < ring->layout.tp_frame_nr; ++i) { ring->frames[i].iov_len = ring->layout.tp_frame_size; ring->frames[i].iov_base = ring->mm_space + (i * ring->layout.tp_frame_size); } } void bind_tx_ring(int sock, struct ring *ring, int ifindex) { int ret; fmemset(&ring->s_ll, 0, sizeof(ring->s_ll)); ring->s_ll.sll_family = AF_PACKET; ring->s_ll.sll_protocol = htons(ETH_P_ALL); ring->s_ll.sll_ifindex = ifindex; ring->s_ll.sll_hatype = 0; ring->s_ll.sll_halen = 0; ring->s_ll.sll_pkttype = 0; ret = bind(sock, (struct sockaddr *) &ring->s_ll, sizeof(ring->s_ll)); if (ret < 0) { destroy_tx_ring(sock, ring); panic("Cannot bind TX_RING!\n"); } } space:mode:

author	Rui Miguel Silva <rui.silva@linaro.org>	2016-08-16 22:31:56 +0100
committer	Greg Kroah-Hartman <gregkh@google.com>	2016-08-18 17:34:01 +0200
commit	5f66d62e8372d8a9c97bd75d772a5a5788925218 (patch)
tree	44676a02dfa6bdad107f68a85e7a37928dfc1eee /drivers
parent	c4582f9d7969019dc67234e96340e21dd3712c46 (diff)

greybus: power_supply: fix update interval check at request handler

We use the update interval to control the remove path and we set it to zero when we do not want to have more updates in transit. That means that the check in the request handler needs to be for interval update zero to discard the newly received request and not the other way around like it is. This will fix the issue that all incoming requests were being discard. Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

Diffstat (limited to 'drivers')

-rw-r--r--

drivers/staging/greybus/power_supply.c

1 files changed, 1 insertions, 1 deletions