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Date: Sun, 8 Oct 2023 06:30:41 +0000
From: Takeru Hayasaka <hayatake396@...il.com>
To: netdev@...r.kernel.org
Cc: mkubecek@...e.cz,
Takeru Hayasaka <hayatake396@...il.com>
Subject: [PATCH net-next v2] ethtool: add support for rx-flow-hash gtp
From: Takeru Hayasaka <hayatake396@...il.com>
GTP Flow hash was added to the ice driver.
By executing "ethtool -N <dev> rx-flow-hash gtp4 sd", RSS can include
not only the IP's src/dst but also the TEID of GTP packets.
Additionally, options [c|e] have been support.
These allow specification to include GTPv2-C cases as well as the
Extension Header's QFI in the hash computation.
Signed-off-by: Takeru Hayasaka <hayatake396@...il.com>
---
While implementing it, I found that I was using the wrong parameters for
ethtool rx-hash-flow, so I fixed it.
ethtool.c | 58 +++++++++++++++++++++++++++++++++++++++++---
uapi/linux/ethtool.h | 10 ++++++++
2 files changed, 64 insertions(+), 4 deletions(-)
diff --git a/ethtool.c b/ethtool.c
index af51220..5325299 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -360,6 +360,16 @@ static int rxflow_str_to_type(const char *str)
flow_type = AH_ESP_V4_FLOW;
else if (!strcmp(str, "sctp4"))
flow_type = SCTP_V4_FLOW;
+ else if (!strcmp(str, "gtpc4"))
+ flow_type = GTPC_V4_FLOW;
+ else if (!strcmp(str, "gtpu4"))
+ flow_type = GTPU_V4_FLOW;
+ else if (!strcmp(str, "gtpu4e"))
+ flow_type = GTPU_EH_V4_FLOW;
+ else if (!strcmp(str, "gtpu4u"))
+ flow_type = GTPU_UL_V4_FLOW;
+ else if (!strcmp(str, "gtpu4d"))
+ flow_type = GTPU_DL_V4_FLOW;
else if (!strcmp(str, "tcp6"))
flow_type = TCP_V6_FLOW;
else if (!strcmp(str, "udp6"))
@@ -370,6 +380,16 @@ static int rxflow_str_to_type(const char *str)
flow_type = SCTP_V6_FLOW;
else if (!strcmp(str, "ether"))
flow_type = ETHER_FLOW;
+ else if (!strcmp(str, "gtpc6"))
+ flow_type = GTPC_V6_FLOW;
+ else if (!strcmp(str, "gtpu6"))
+ flow_type = GTPU_V6_FLOW;
+ else if (!strcmp(str, "gtpu6e"))
+ flow_type = GTPU_EH_V6_FLOW;
+ else if (!strcmp(str, "gtpu6u"))
+ flow_type = GTPU_UL_V6_FLOW;
+ else if (!strcmp(str, "gtpu6d"))
+ flow_type = GTPU_DL_V6_FLOW;
return flow_type;
}
@@ -1559,6 +1579,21 @@ static int dump_rxfhash(int fhash, u64 val)
case SCTP_V4_FLOW:
fprintf(stdout, "SCTP over IPV4 flows");
break;
+ case GTPC_V4_FLOW:
+ fprintf(stdout, "GTP-C over IPV4 flows");
+ break;
+ case GTPU_V4_FLOW:
+ fprintf(stdout, "GTP-U over IPV4 flows");
+ break;
+ case GTPU_EH_V4_FLOW:
+ fprintf(stdout, "GTP-U and Extension Header over IPV4 flows");
+ break;
+ case GTPU_UL_V4_FLOW:
+ fprintf(stdout, "GTP-U over IPV4 Uplink flows");
+ break;
+ case GTPU_DL_V4_FLOW:
+ fprintf(stdout, "GTP-U over IPV4 Downlink flows");
+ break;
case AH_ESP_V4_FLOW:
case AH_V4_FLOW:
case ESP_V4_FLOW:
@@ -1573,6 +1608,21 @@ static int dump_rxfhash(int fhash, u64 val)
case SCTP_V6_FLOW:
fprintf(stdout, "SCTP over IPV6 flows");
break;
+ case GTPC_V6_FLOW:
+ fprintf(stdout, "GTP-C over IPV6 flows");
+ break;
+ case GTPU_V6_FLOW:
+ fprintf(stdout, "GTP-U over IPV6 flows");
+ break;
+ case GTPU_EH_V6_FLOW:
+ fprintf(stdout, "GTP-U and Extension Header over IPV6 flows");
+ break;
+ case GTPU_UL_V6_FLOW:
+ fprintf(stdout, "GTP-U over IPV6 Uplink flows");
+ break;
+ case GTPU_DL_V6_FLOW:
+ fprintf(stdout, "GTP-U over IPV6 Downlink flows");
+ break;
case AH_ESP_V6_FLOW:
case AH_V6_FLOW:
case ESP_V6_FLOW:
@@ -5832,16 +5882,16 @@ static const struct option args[] = {
.opts = "-n|-u|--show-nfc|--show-ntuple",
.func = do_grxclass,
.help = "Show Rx network flow classification options or rules",
- .xhelp = " [ rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|"
- "tcp6|udp6|ah6|esp6|sctp6 [context %d] |\n"
+ .xhelp = " [ rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|gtp4|"
+ "tcp6|udp6|ah6|esp6|sctp6|gtp6 [context %d] |\n"
" rule %d ]\n"
},
{
.opts = "-N|-U|--config-nfc|--config-ntuple",
.func = do_srxclass,
.help = "Configure Rx network flow classification options or rules",
- .xhelp = " rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|"
- "tcp6|udp6|ah6|esp6|sctp6 m|v|t|s|d|f|n|r... [context %d] |\n"
+ .xhelp = " rx-flow-hash tcp4|udp4|ah4|esp4|sctp4|gtp4|"
+ "tcp6|udp6|ah6|esp6|sctp6|gtp6 m|v|t|s|d|f|n|r|c|e|u|w... [context %d] |\n"
" flow-type ether|ip4|tcp4|udp4|sctp4|ah4|esp4|"
"ip6|tcp6|udp6|ah6|esp6|sctp6\n"
" [ src %x:%x:%x:%x:%x:%x [m %x:%x:%x:%x:%x:%x] ]\n"
diff --git a/uapi/linux/ethtool.h b/uapi/linux/ethtool.h
index 1d0731b..768fe8c 100644
--- a/uapi/linux/ethtool.h
+++ b/uapi/linux/ethtool.h
@@ -2009,6 +2009,16 @@ static __inline__ int ethtool_validate_duplex(__u8 duplex)
#define IPV4_FLOW 0x10 /* hash only */
#define IPV6_FLOW 0x11 /* hash only */
#define ETHER_FLOW 0x12 /* spec only (ether_spec) */
+#define GTPU_V4_FLOW 0x13 /* hash only */
+#define GTPU_V6_FLOW 0x14 /* hash only */
+#define GTPC_V4_FLOW 0x15 /* hash only */
+#define GTPC_V6_FLOW 0x16 /* hash only */
+#define GTPU_EH_V4_FLOW 0x17 /* hash only */
+#define GTPU_EH_V6_FLOW 0x18 /* hash only */
+#define GTPU_UL_V4_FLOW 0x19 /* hash only */
+#define GTPU_UL_V6_FLOW 0x20 /* hash only */
+#define GTPU_DL_V4_FLOW 0x21 /* hash only */
+#define GTPU_DL_V6_FLOW 0x22 /* hash only */
/* Flag to enable additional fields in struct ethtool_rx_flow_spec */
#define FLOW_EXT 0x80000000
#define FLOW_MAC_EXT 0x40000000
--
2.34.1
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