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Commit ff40dd5d authored Feb 14, 2014 by Jesse Brandeburg Committed by Jeff Kirsher Mar 19, 2014

i40e/i40evf: reduce context descriptors



We don't need context descriptors for every packet, only tso
or timesync.  This fixes a bug in the driver where it would
always add a context even if all the passed in values
to the context descriptor function were 0/default values.

Change-ID: I0101d2b893380707b5c2de61aab3e16d4310e9a1
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

parent 1943d8ba

drivers/net/ethernet/intel/i40e/i40e_txrx.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1951,7 +1951,8 @@ static void i40e_create_tx_ctx(struct i40e_ring *tx_ring,
		struct i40e_tx_context_desc *context_desc;
		int i = tx_ring->next_to_use;

		if (!cd_type_cmd_tso_mss && !cd_tunneling && !cd_l2tag2)
		if ((cd_type_cmd_tso_mss == I40E_TX_DESC_DTYPE_CONTEXT) &&
		!cd_tunneling && !cd_l2tag2)
		return;

		/* grab the next descriptor */

drivers/net/ethernet/intel/i40evf/i40e_txrx.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1286,7 +1286,8 @@ static void i40e_create_tx_ctx(struct i40e_ring *tx_ring,
		struct i40e_tx_context_desc *context_desc;
		int i = tx_ring->next_to_use;

		if (!cd_type_cmd_tso_mss && !cd_tunneling && !cd_l2tag2)
		if ((cd_type_cmd_tso_mss == I40E_TX_DESC_DTYPE_CONTEXT) &&
		!cd_tunneling && !cd_l2tag2)
		return;

		/* grab the next descriptor */