[dpdk-dev] [PATCH 1/4] net/sfc/base: provide information about supported tunnels

[Andrew Rybchenko]

VXLAN/NVGRE (and Geneve) support is available on SFN8xxx with
full-feature firmware variant running.

Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
Reviewed-by: Andrew Lee <alee at solarflare.com>
Reviewed-by: Andy Moreton <amoreton at solarflare.com>
Reviewed-by: Mark Spender <mspender at solarflare.com>
---
 drivers/net/sfc/base/ef10_nic.c | 10 ++++++++++
 drivers/net/sfc/base/efx.h      |  9 +++++++++
 2 files changed, 19 insertions(+)

diff --git a/drivers/net/sfc/base/ef10_nic.c b/drivers/net/sfc/base/ef10_nic.c
index aac2679..58d1b0a 100644
--- a/drivers/net/sfc/base/ef10_nic.c
+++ b/drivers/net/sfc/base/ef10_nic.c
@@ -1072,6 +1072,16 @@
 	encp->enc_mac_stats_40g_tx_size_bins =
 	    CAP_FLAG2(flags2, MAC_STATS_40G_TX_SIZE_BINS) ? B_TRUE : B_FALSE;
 
+	/*
+	 * Check if firmware supports VXLAN and NVGRE tunnels.
+	 * The capability indicates Geneve protocol support as well.
+	 */
+	if (CAP_FLAG(flags, VXLAN_NVGRE))
+		encp->enc_tunnel_encapsulations_supported =
+		    (1u << EFX_TUNNEL_PROTOCOL_VXLAN) |
+		    (1u << EFX_TUNNEL_PROTOCOL_GENEVE) |
+		    (1u << EFX_TUNNEL_PROTOCOL_NVGRE);
+
 #undef CAP_FLAG
 #undef CAP_FLAG2
 
diff --git a/drivers/net/sfc/base/efx.h b/drivers/net/sfc/base/efx.h
index 7eabc37..c227546 100644
--- a/drivers/net/sfc/base/efx.h
+++ b/drivers/net/sfc/base/efx.h
@@ -1088,6 +1088,14 @@ enum {
 #define	EFX_FEATURE_FW_ASSISTED_TSO_V2	0x00002000
 #define	EFX_FEATURE_PACKED_STREAM	0x00004000
 
+typedef enum efx_tunnel_protocol_e {
+	EFX_TUNNEL_PROTOCOL_NONE = 0,
+	EFX_TUNNEL_PROTOCOL_VXLAN,
+	EFX_TUNNEL_PROTOCOL_GENEVE,
+	EFX_TUNNEL_PROTOCOL_NVGRE,
+	EFX_TUNNEL_NPROTOS
+} efx_tunnel_protocol_t;
+
 typedef struct efx_nic_cfg_s {
 	uint32_t		enc_board_type;
 	uint32_t		enc_phy_type;
@@ -1187,6 +1195,7 @@ enum {
 	boolean_t		enc_rx_var_packed_stream_supported;
 	boolean_t		enc_pm_and_rxdp_counters;
 	boolean_t		enc_mac_stats_40g_tx_size_bins;
+	uint32_t		enc_tunnel_encapsulations_supported;
 	/* External port identifier */
 	uint8_t			enc_external_port;
 	uint32_t		enc_mcdi_max_payload_length;
-- 
1.8.2.3