/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010 Daniel Borkmann. * 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 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, int num, size_t size) { int i; size_t 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; if (tx_only) ring->s_ll.sll_protocol = 0; else 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) panic("Cannot bind {TX,RX}_RING!\n"); } 2583b1d31f479110f0f'>refslogtreecommitdiff
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authorJohan Hovold <johan@hovoldconsulting.com>2016-08-03 14:09:33 +0200
committerGreg Kroah-Hartman <gregkh@google.com>2016-08-03 15:42:38 +0200
commit121bae2bec47a9944049f2583b1d31f479110f0f (patch)
tree62c57f5952002946f693cb04dfbb45461c359ae7
parent4ae2d962637e4a002d1f0884dceec800c79b3ea4 (diff)
greybus: es2: allow ARPC result to be ignored
Allow user of ARPC to pass a NULL pointer for the ARPC result. For simple requests there may only be one error code for remote errors, or the caller may simply not care to differentiate them. Signed-off-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat
-rw-r--r--drivers/staging/greybus/es2.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c