Thread (5 messages) 5 messages, 3 authors, 2021-12-09

Re: [PATCH] samples:bpf:remove unneeded variable

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From: Andrii Nakryiko <hidden>
Date: 2021-12-09 07:13:32
Also in: bpf, lkml

On Wed, Dec 8, 2021 at 5:55 PM [off-list ref] wrote:
From: chiminghao <redacted>

return value form directly instead of
taking this in another redundant variable.

Reported-by: Zeal Robot <redacted>
Signed-off-by: chiminghao <redacted>
Signed-off-by should contain properly capitalized full name, please update.

Also please use "samples/bpf: " patch prefix and use [PATCH bpf-next]
to designate the destination kernel tree. Thanks.
quoted hunk ↗ jump to hunk
---
 samples/bpf/xdp_redirect_cpu.bpf.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/samples/bpf/xdp_redirect_cpu.bpf.c b/samples/bpf/xdp_redirect_cpu.bpf.c
index f10fe3cf25f6..25e3a405375f 100644
--- a/samples/bpf/xdp_redirect_cpu.bpf.c
+++ b/samples/bpf/xdp_redirect_cpu.bpf.c
@@ -100,7 +100,6 @@ u16 get_dest_port_ipv4_udp(struct xdp_md *ctx, u64 nh_off)
        void *data     = (void *)(long)ctx->data;
        struct iphdr *iph = data + nh_off;
        struct udphdr *udph;
-       u16 dport;

        if (iph + 1 > data_end)
                return 0;
@@ -111,8 +110,7 @@ u16 get_dest_port_ipv4_udp(struct xdp_md *ctx, u64 nh_off)
        if (udph + 1 > data_end)
                return 0;

-       dport = bpf_ntohs(udph->dest);
-       return dport;
+       return bpf_ntohs(udph->dest);
 }

 static __always_inline
--
2.25.1
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