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Diffstat (limited to 'samples/bpf/sockex3_kern.c')
-rw-r--r--samples/bpf/sockex3_kern.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/samples/bpf/sockex3_kern.c b/samples/bpf/sockex3_kern.c
index cab9cca0b8eb..b363503357e5 100644
--- a/samples/bpf/sockex3_kern.c
+++ b/samples/bpf/sockex3_kern.c
@@ -31,11 +31,13 @@ struct {
#define PARSE_IP 3
#define PARSE_IPV6 4
-/* protocol dispatch routine.
- * It tail-calls next BPF program depending on eth proto
- * Note, we could have used:
- * bpf_tail_call(skb, &jmp_table, proto);
- * but it would need large prog_array
+/* Protocol dispatch routine. It tail-calls next BPF program depending
+ * on eth proto. Note, we could have used ...
+ *
+ * bpf_tail_call(skb, &jmp_table, proto);
+ *
+ * ... but it would need large prog_array and cannot be optimised given
+ * the map key is not static.
*/
static inline void parse_eth_proto(struct __sk_buff *skb, u32 proto)
{