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authorDavid Ahern <dsahern@gmail.com>2017-08-31 15:05:44 -0700
committerDavid S. Miller <davem@davemloft.net>2017-09-01 06:05:15 +0100
commit482dca939fb7ee35ba20b944b4c2476133dbf0df (patch)
tree3e69a2555e13e96570491d68b191be4abd5ef7da /net
parente12f1a5952c9ac27888846f267ed19cb478618e6 (diff)
bpf: Add mark and priority to sock options that can be set
Add socket mark and priority to fields that can be set by ebpf program when a socket is created. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/core/filter.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index c6a37fe0285b..f51b9690adf3 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -3455,6 +3455,10 @@ static bool sock_filter_is_valid_access(int off, int size,
switch (off) {
case offsetof(struct bpf_sock, bound_dev_if):
break;
+ case offsetof(struct bpf_sock, mark):
+ break;
+ case offsetof(struct bpf_sock, priority):
+ break;
default:
return false;
}
@@ -3958,6 +3962,28 @@ static u32 sock_filter_convert_ctx_access(enum bpf_access_type type,
offsetof(struct sock, sk_bound_dev_if));
break;
+ case offsetof(struct bpf_sock, mark):
+ BUILD_BUG_ON(FIELD_SIZEOF(struct sock, sk_mark) != 4);
+
+ if (type == BPF_WRITE)
+ *insn++ = BPF_STX_MEM(BPF_W, si->dst_reg, si->src_reg,
+ offsetof(struct sock, sk_mark));
+ else
+ *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg,
+ offsetof(struct sock, sk_mark));
+ break;
+
+ case offsetof(struct bpf_sock, priority):
+ BUILD_BUG_ON(FIELD_SIZEOF(struct sock, sk_priority) != 4);
+
+ if (type == BPF_WRITE)
+ *insn++ = BPF_STX_MEM(BPF_W, si->dst_reg, si->src_reg,
+ offsetof(struct sock, sk_priority));
+ else
+ *insn++ = BPF_LDX_MEM(BPF_W, si->dst_reg, si->src_reg,
+ offsetof(struct sock, sk_priority));
+ break;
+
case offsetof(struct bpf_sock, family):
BUILD_BUG_ON(FIELD_SIZEOF(struct sock, sk_family) != 2);