diff options
author | Vadim Fedorenko <vadfed@meta.com> | 2024-06-06 16:58:51 +0200 |
---|---|---|
committer | Daniel Borkmann <daniel@iogearbox.net> | 2024-06-13 14:29:53 +0200 |
commit | 041c1dc988fdffd5eb0c13f1ce5d1b3b0125f208 (patch) | |
tree | 81b6698d112bb09cd4ee9a04c79a397d02110abd /tools/testing/selftests/bpf/progs/skb_pkt_end.c | |
parent | bpf: Add CHECKSUM_COMPLETE to bpf test progs (diff) | |
download | linux-041c1dc988fdffd5eb0c13f1ce5d1b3b0125f208.tar.xz linux-041c1dc988fdffd5eb0c13f1ce5d1b3b0125f208.zip |
selftests/bpf: Validate CHECKSUM_COMPLETE option
Adjust skb program test to run with checksum validation.
Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20240606145851.229116-2-vadfed@meta.com
Diffstat (limited to 'tools/testing/selftests/bpf/progs/skb_pkt_end.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/skb_pkt_end.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/progs/skb_pkt_end.c b/tools/testing/selftests/bpf/progs/skb_pkt_end.c index db4abd2682fc..3bb4451524a1 100644 --- a/tools/testing/selftests/bpf/progs/skb_pkt_end.c +++ b/tools/testing/selftests/bpf/progs/skb_pkt_end.c @@ -33,6 +33,8 @@ int main_prog(struct __sk_buff *skb) struct iphdr *ip = NULL; struct tcphdr *tcp; __u8 proto = 0; + int urg_ptr; + u32 offset; if (!(ip = get_iphdr(skb))) goto out; @@ -48,7 +50,14 @@ int main_prog(struct __sk_buff *skb) if (!tcp) goto out; - return tcp->urg_ptr; + urg_ptr = tcp->urg_ptr; + + /* Checksum validation part */ + proto++; + offset = sizeof(struct ethhdr) + offsetof(struct iphdr, protocol); + bpf_skb_store_bytes(skb, offset, &proto, sizeof(proto), BPF_F_RECOMPUTE_CSUM); + + return urg_ptr; out: return -1; } |