[dpdk-dev] [PATCH 06/11] net/sfc/base: add API to allocate and free RSS contexts

[Andrew Rybchenko]

From: Mark Spender <mspender at solarflare.com>

Signed-off-by: Mark Spender <mspender at solarflare.com>
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>
---
 drivers/net/sfc/base/ef10_impl.h | 12 +++++++
 drivers/net/sfc/base/ef10_rx.c   | 42 +++++++++++++++++++++++++
 drivers/net/sfc/base/efx.h       | 12 +++++++
 drivers/net/sfc/base/efx_impl.h  |  4 +++
 drivers/net/sfc/base/efx_rx.c    | 68 ++++++++++++++++++++++++++++++++++++++++
 5 files changed, 138 insertions(+)

diff --git a/drivers/net/sfc/base/ef10_impl.h b/drivers/net/sfc/base/ef10_impl.h
index 86b723f..71a68d7 100644
--- a/drivers/net/sfc/base/ef10_impl.h
+++ b/drivers/net/sfc/base/ef10_impl.h
@@ -898,6 +898,18 @@ extern	__checkReturn	__success(return != B_FALSE)	boolean_t
 #if EFSYS_OPT_RX_SCALE
 
 extern	__checkReturn	efx_rc_t
+ef10_rx_scale_context_alloc(
+	__in		efx_nic_t *enp,
+	__in		efx_rx_scale_context_type_t type,
+	__in		uint32_t num_queues,
+	__out		uint32_t *rss_contextp);
+
+extern	__checkReturn	efx_rc_t
+ef10_rx_scale_context_free(
+	__in		efx_nic_t *enp,
+	__in		uint32_t rss_context);
+
+extern	__checkReturn	efx_rc_t
 ef10_rx_scale_mode_set(
 	__in		efx_nic_t *enp,
 	__in		efx_rx_hash_alg_t alg,
diff --git a/drivers/net/sfc/base/ef10_rx.c b/drivers/net/sfc/base/ef10_rx.c
index 9bd5353..8dd6572 100644
--- a/drivers/net/sfc/base/ef10_rx.c
+++ b/drivers/net/sfc/base/ef10_rx.c
@@ -491,6 +491,48 @@
 
 #if EFSYS_OPT_RX_SCALE
 	__checkReturn	efx_rc_t
+ef10_rx_scale_context_alloc(
+	__in		efx_nic_t *enp,
+	__in		efx_rx_scale_context_type_t type,
+	__in		uint32_t num_queues,
+	__out		uint32_t *rss_contextp)
+{
+	efx_rc_t rc;
+
+	rc = efx_mcdi_rss_context_alloc(enp, type, num_queues, rss_contextp);
+	if (rc != 0)
+		goto fail1;
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+	return (rc);
+}
+#endif /* EFSYS_OPT_RX_SCALE */
+
+#if EFSYS_OPT_RX_SCALE
+	__checkReturn	efx_rc_t
+ef10_rx_scale_context_free(
+	__in		efx_nic_t *enp,
+	__in		uint32_t rss_context)
+{
+	efx_rc_t rc;
+
+	rc = efx_mcdi_rss_context_free(enp, rss_context);
+	if (rc != 0)
+		goto fail1;
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+	return (rc);
+}
+#endif /* EFSYS_OPT_RX_SCALE */
+
+#if EFSYS_OPT_RX_SCALE
+	__checkReturn	efx_rc_t
 ef10_rx_scale_mode_set(
 	__in		efx_nic_t *enp,
 	__in		efx_rx_hash_alg_t alg,
diff --git a/drivers/net/sfc/base/efx.h b/drivers/net/sfc/base/efx.h
index 7d370f4..0bca7d9 100644
--- a/drivers/net/sfc/base/efx.h
+++ b/drivers/net/sfc/base/efx.h
@@ -1927,6 +1927,18 @@ enum {
 	__out		efx_rx_scale_context_type_t *typep);
 
 extern	__checkReturn	efx_rc_t
+efx_rx_scale_context_alloc(
+	__in		efx_nic_t *enp,
+	__in		efx_rx_scale_context_type_t type,
+	__in		uint32_t num_queues,
+	__out		uint32_t *rss_contextp);
+
+extern	__checkReturn	efx_rc_t
+efx_rx_scale_context_free(
+	__in		efx_nic_t *enp,
+	__in		uint32_t rss_context);
+
+extern	__checkReturn	efx_rc_t
 efx_rx_scale_mode_set(
 	__in	efx_nic_t *enp,
 	__in	efx_rx_hash_alg_t alg,
diff --git a/drivers/net/sfc/base/efx_impl.h b/drivers/net/sfc/base/efx_impl.h
index f20c97f..c7ed067 100644
--- a/drivers/net/sfc/base/efx_impl.h
+++ b/drivers/net/sfc/base/efx_impl.h
@@ -152,6 +152,10 @@
 	efx_rc_t	(*erxo_scatter_enable)(efx_nic_t *, unsigned int);
 #endif
 #if EFSYS_OPT_RX_SCALE
+	efx_rc_t	(*erxo_scale_context_alloc)(efx_nic_t *,
+						    efx_rx_scale_context_type_t,
+						    uint32_t, uint32_t *);
+	efx_rc_t	(*erxo_scale_context_free)(efx_nic_t *, uint32_t);
 	efx_rc_t	(*erxo_scale_mode_set)(efx_nic_t *, efx_rx_hash_alg_t,
 					       efx_rx_hash_type_t, boolean_t);
 	efx_rc_t	(*erxo_scale_key_set)(efx_nic_t *, uint8_t *, size_t);
diff --git a/drivers/net/sfc/base/efx_rx.c b/drivers/net/sfc/base/efx_rx.c
index 41fc17e..d587f08 100644
--- a/drivers/net/sfc/base/efx_rx.c
+++ b/drivers/net/sfc/base/efx_rx.c
@@ -149,6 +149,8 @@
 	siena_rx_scatter_enable,		/* erxo_scatter_enable */
 #endif
 #if EFSYS_OPT_RX_SCALE
+	NULL,					/* erxo_scale_context_alloc */
+	NULL,					/* erxo_scale_context_free */
 	siena_rx_scale_mode_set,		/* erxo_scale_mode_set */
 	siena_rx_scale_key_set,			/* erxo_scale_key_set */
 	siena_rx_scale_tbl_set,			/* erxo_scale_tbl_set */
@@ -176,6 +178,8 @@
 	ef10_rx_scatter_enable,			/* erxo_scatter_enable */
 #endif
 #if EFSYS_OPT_RX_SCALE
+	ef10_rx_scale_context_alloc,		/* erxo_scale_context_alloc */
+	ef10_rx_scale_context_free,		/* erxo_scale_context_free */
 	ef10_rx_scale_mode_set,			/* erxo_scale_mode_set */
 	ef10_rx_scale_key_set,			/* erxo_scale_key_set */
 	ef10_rx_scale_tbl_set,			/* erxo_scale_tbl_set */
@@ -360,7 +364,71 @@
 
 	return (rc);
 }
+#endif	/* EFSYS_OPT_RX_SCALE */
+
+#if EFSYS_OPT_RX_SCALE
+	__checkReturn	efx_rc_t
+efx_rx_scale_context_alloc(
+	__in		efx_nic_t *enp,
+	__in		efx_rx_scale_context_type_t type,
+	__in		uint32_t num_queues,
+	__out		uint32_t *rss_contextp)
+{
+	const efx_rx_ops_t *erxop = enp->en_erxop;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
+
+	if (erxop->erxo_scale_context_alloc == NULL) {
+		rc = ENOTSUP;
+		goto fail1;
+	}
+	if ((rc = erxop->erxo_scale_context_alloc(enp, type,
+			    num_queues, rss_contextp)) != 0) {
+		goto fail2;
+	}
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+	return (rc);
+}
+#endif	/* EFSYS_OPT_RX_SCALE */
 
+#if EFSYS_OPT_RX_SCALE
+	__checkReturn	efx_rc_t
+efx_rx_scale_context_free(
+	__in		efx_nic_t *enp,
+	__in		uint32_t rss_context)
+{
+	const efx_rx_ops_t *erxop = enp->en_erxop;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
+
+	if (erxop->erxo_scale_context_free == NULL) {
+		rc = ENOTSUP;
+		goto fail1;
+	}
+	if ((rc = erxop->erxo_scale_context_free(enp, rss_context)) != 0)
+		goto fail2;
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+	return (rc);
+}
+#endif	/* EFSYS_OPT_RX_SCALE */
+
+#if EFSYS_OPT_RX_SCALE
 	__checkReturn	efx_rc_t
 efx_rx_scale_mode_set(
 	__in		efx_nic_t *enp,
-- 
1.8.2.3