[PATCH bpf-next] bpf: remove useless variable

[Andrea Claudi]

bytes is initialized to end - start at the beginning of this function,
and is never changed. Remove it making the code a bit more readable.

Suggested-by: Stefano Brivio <sbri...@redhat.com>
Signed-off-by: Andrea Claudi <acla...@redhat.com>
---
 net/core/filter.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/core/filter.c b/net/core/filter.c
index aa274679965d..f31a0de14216 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2170,8 +2170,8 @@ static const struct bpf_func_proto 
bpf_msg_cork_bytes_proto = {
 BPF_CALL_4(bpf_msg_pull_data, struct sk_msg *, msg, u32, start,
           u32, end, u64, flags)
 {
-       u32 len = 0, offset = 0, copy = 0, poffset = 0, bytes = end - start;
        u32 first_sge, last_sge, i, shift, bytes_sg_total;
+       u32 len = 0, offset = 0, copy = 0, poffset = 0;
        struct scatterlist *sge;
        u8 *raw, *to, *from;
        struct page *page;
@@ -2196,7 +2196,7 @@ BPF_CALL_4(bpf_msg_pull_data, struct sk_msg *, msg, u32, 
start,
        /* The start may point into the sg element so we need to also
         * account for the headroom.
         */
-       bytes_sg_total = start - offset + bytes;
+       bytes_sg_total = end - offset;
        if (!msg->sg.copy[i] && bytes_sg_total <= len)
                goto out;
 
@@ -2279,7 +2279,7 @@ BPF_CALL_4(bpf_msg_pull_data, struct sk_msg *, msg, u32, 
start,
                      msg->sg.end - shift;
 out:
        msg->data = sg_virt(&msg->sg.data[first_sge]) + start - offset;
-       msg->data_end = msg->data + bytes;
+       msg->data_end = msg->data + end - start;
        return 0;
 }
 
-- 
2.19.2