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bpf: Remove the unnecessary insn buffer comparison 

The variable 'insn' is initialized to 'insn_buf' without being changed, only
some helper macros are defined, so the insn buffer comparison is unnecessary.
Just remove it. This missed removal back in 2377b81de5 ("bpf: split shared
bpf_tcp_sock and bpf_sock_ops implementation").

Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20230108151258.96570-1-haiyue.wang@intel.com
This commit is contained in:
Haiyue Wang 2023-01-08 23:12:57 +08:00 committed by Daniel Borkmann
parent 6d0c4b11e7
commit 66cf99b55e
1 changed files with 0 additions and 6 deletions
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6
net/core/filter.c
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@ -6847,9 +6847,6 @@ u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type,
FIELD)); \
} while (0)
if (insn > insn_buf)
return insn - insn_buf;
switch (si->off) {
case offsetof(struct bpf_tcp_sock, rtt_min):
BUILD_BUG_ON(sizeof_field(struct tcp_sock, rtt_min) !=
@ -10147,9 +10144,6 @@ static u32 sock_ops_convert_ctx_access(enum bpf_access_type type,
SOCK_OPS_GET_FIELD(BPF_FIELD, OBJ_FIELD, OBJ); \
} while (0)
if (insn > insn_buf)
return insn - insn_buf;
switch (si->off) {
case offsetof(struct bpf_sock_ops, op):
*insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct bpf_sock_ops_kern,