ethtool: Add comments for valid use of flow types

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 15 deletions

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 00334eebbe26..b67af60a8890 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -841,21 +841,21 @@ struct ethtool_ops {
 #define WAKE_MAGICSECURE        (1 << 6) /* only meaningful if WAKE_MAGIC */
 
 /* L3-L4 network traffic flow types */
-#define TCP_V4_FLOW     0x01
-#define UDP_V4_FLOW     0x02
-#define SCTP_V4_FLOW    0x03
-#define AH_ESP_V4_FLOW  0x04
-#define TCP_V6_FLOW     0x05
-#define UDP_V6_FLOW     0x06
-#define SCTP_V6_FLOW    0x07
-#define AH_ESP_V6_FLOW  0x08
-#define AH_V4_FLOW      0x09
-#define ESP_V4_FLOW     0x0a
-#define AH_V6_FLOW      0x0b
-#define ESP_V6_FLOW     0x0c
-#define IP_USER_FLOW    0x0d
-#define IPV4_FLOW       0x10
-#define IPV6_FLOW       0x11
+#define TCP_V4_FLOW     0x01    /* hash or spec (tcp_ip4_spec) */
+#define UDP_V4_FLOW     0x02    /* hash or spec (udp_ip4_spec) */
+#define SCTP_V4_FLOW    0x03    /* hash or spec (sctp_ip4_spec) */
+#define AH_ESP_V4_FLOW  0x04    /* hash only */
+#define TCP_V6_FLOW     0x05    /* hash only */
+#define UDP_V6_FLOW     0x06    /* hash only */
+#define SCTP_V6_FLOW    0x07    /* hash only */
+#define AH_ESP_V6_FLOW  0x08    /* hash only */
+#define AH_V4_FLOW      0x09    /* hash or spec (ah_ip4_spec) */
+#define ESP_V4_FLOW     0x0a    /* hash or spec (esp_ip4_spec) */
+#define AH_V6_FLOW      0x0b    /* hash only */
+#define ESP_V6_FLOW     0x0c    /* hash only */
+#define IP_USER_FLOW    0x0d    /* spec only (usr_ip4_spec) */
+#define IPV4_FLOW       0x10    /* hash only */
+#define IPV6_FLOW       0x11    /* hash only */
 
 /* L3-L4 network traffic flow hash options */
 #define RXH_L2DA        (1 << 1)