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authorLawrence Brakmo <brakmo@fb.com>2017-06-30 20:02:46 -0700
committerDavid S. Miller <davem@davemloft.net>2017-07-01 16:15:13 -0700
commit8c4b4c7e9ff0447995750d9329949fa082520269 (patch)
treeb4215d293911949d5373baef37c29ca0d09df1e3 /samples/bpf
parentc400296bf63d234899cf2448cd3d17199676f188 (diff)
downloadlinux-8c4b4c7e9ff0447995750d9329949fa082520269.tar.bz2
bpf: Add setsockopt helper function to bpf
Added support for calling a subset of socket setsockopts from BPF_PROG_TYPE_SOCK_OPS programs. The code was duplicated rather than making the changes to call the socket setsockopt function because the changes required would have been larger. The ops supported are: SO_RCVBUF SO_SNDBUF SO_MAX_PACING_RATE SO_PRIORITY SO_RCVLOWAT SO_MARK Signed-off-by: Lawrence Brakmo <brakmo@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf')
-rw-r--r--samples/bpf/bpf_helpers.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/samples/bpf/bpf_helpers.h b/samples/bpf/bpf_helpers.h
index f4840b8bb8f9..d50ac342dc92 100644
--- a/samples/bpf/bpf_helpers.h
+++ b/samples/bpf/bpf_helpers.h
@@ -60,6 +60,9 @@ static unsigned long long (*bpf_get_prandom_u32)(void) =
(void *) BPF_FUNC_get_prandom_u32;
static int (*bpf_xdp_adjust_head)(void *ctx, int offset) =
(void *) BPF_FUNC_xdp_adjust_head;
+static int (*bpf_setsockopt)(void *ctx, int level, int optname, void *optval,
+ int optlen) =
+ (void *) BPF_FUNC_setsockopt;
/* llvm builtin functions that eBPF C program may use to
* emit BPF_LD_ABS and BPF_LD_IND instructions