bpf: sockmap sample, add option to attach SK_MSG program

Add sockmap option to use SK_MSG program types.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 12 insertions, 1 deletions

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 13d9c59d79ce..01b9c97b172e 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -720,6 +720,15 @@ union bpf_attr {
  * int bpf_override_return(pt_regs, rc)
  *      @pt_regs: pointer to struct pt_regs
  *      @rc: the return value to set
+ *
+ * int bpf_msg_redirect_map(map, key, flags)
+ *     Redirect msg to a sock in map using key as a lookup key for the
+ *     sock in map.
+ *     @map: pointer to sockmap
+ *     @key: key to lookup sock in map
+ *     @flags: reserved for future use
+ *     Return: SK_PASS
+ *
  */
 #define __BPF_FUNC_MAPPER(FN)           \
         FN(unspec),                     \
@@ -781,7 +790,9 @@ union bpf_attr {
         FN(perf_prog_read_value),       \
         FN(getsockopt),                 \
         FN(override_return),            \
-        FN(sock_ops_cb_flags_set),
+        FN(sock_ops_cb_flags_set),      \
+        FN(msg_redirect_map),           \
+        FN(msg_apply_bytes),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call