Index: sys/dev/sfxge/common/efx.h
===================================================================
--- sys/dev/sfxge/common/efx.h
+++ sys/dev/sfxge/common/efx.h
@@ -1134,6 +1134,7 @@
 	uint32_t		enc_rx_prefix_size;
 	uint32_t		enc_rx_buf_align_start;
 	uint32_t		enc_rx_buf_align_end;
+	uint32_t		enc_rx_scale_max_exclusive_contexts;
 #if EFSYS_OPT_LOOPBACK
 	efx_qword_t		enc_loopback_types[EFX_LINK_NMODES];
 #endif	/* EFSYS_OPT_LOOPBACK */
Index: sys/dev/sfxge/common/hunt_nic.c
===================================================================
--- sys/dev/sfxge/common/hunt_nic.c
+++ sys/dev/sfxge/common/hunt_nic.c
@@ -304,6 +304,13 @@
 	/* Alignment for WPTR updates */
 	encp->enc_rx_push_align = EF10_RX_WPTR_ALIGN;
 
+	/*
+	 * Maximum number of exclusive RSS contexts which can be allocated. The
+	 * hardware supports 64, but 6 are reserved for shared contexts. They
+	 * are a global resource so not all may be available.
+	 */
+	encp->enc_rx_scale_max_exclusive_contexts = 58;
+
 	encp->enc_tx_dma_desc_size_max = EFX_MASK32(ESF_DZ_RX_KER_BYTE_CNT);
 	/* No boundary crossing limits */
 	encp->enc_tx_dma_desc_boundary = 0;
Index: sys/dev/sfxge/common/medford_nic.c
===================================================================
--- sys/dev/sfxge/common/medford_nic.c
+++ sys/dev/sfxge/common/medford_nic.c
@@ -301,6 +301,13 @@
 	/* Alignment for WPTR updates */
 	encp->enc_rx_push_align = EF10_RX_WPTR_ALIGN;
 
+	/*
+	 * Maximum number of exclusive RSS contexts which can be allocated. The
+	 * hardware supports 64, but 6 are reserved for shared contexts. They
+	 * are a global resource so not all may be available.
+	 */
+	encp->enc_rx_scale_max_exclusive_contexts = 58;
+
 	encp->enc_tx_dma_desc_size_max = EFX_MASK32(ESF_DZ_RX_KER_BYTE_CNT);
 	/* No boundary crossing limits */
 	encp->enc_tx_dma_desc_boundary = 0;
Index: sys/dev/sfxge/common/siena_nic.c
===================================================================
--- sys/dev/sfxge/common/siena_nic.c
+++ sys/dev/sfxge/common/siena_nic.c
@@ -140,6 +140,9 @@
 	/* Alignment for WPTR updates */
 	encp->enc_rx_push_align = 1;
 
+	/* There is one RSS context per function */
+	encp->enc_rx_scale_max_exclusive_contexts = 1;
+
 	encp->enc_tx_dma_desc_size_max = EFX_MASK32(FSF_AZ_TX_KER_BYTE_COUNT);
 	/* Fragments must not span 4k boundaries. */
 	encp->enc_tx_dma_desc_boundary = 4096;