提交 482dca93 编写于 作者: D David Ahern 提交者: David S. Miller

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: NDavid Ahern <dsahern@gmail.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Acked-by: NDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 e12f1a59
......@@ -758,6 +758,8 @@ struct bpf_sock {
__u32 family;
__u32 type;
__u32 protocol;
__u32 mark;
__u32 priority;
};
#define XDP_PACKET_HEADROOM 256
......
......@@ -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);
......
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