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Commit 202187c3 authored by Kumar Sanghvi's avatar Kumar Sanghvi Committed by David S. Miller
Browse files

cxgb4: add tc flower support for ETH-SMAC rewrite 



Adds support for ETH-SMAC rewrite via TC-PEDIT action.

Signed-off-by: default avatarKumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: default avatarRahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: default avatarGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3bdb376e

drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c

+10 −0
Original line number Diff line number Diff line
@@ -45,6 +45,8 @@ 
struct ch_tc_pedit_fields pedits[] = {

	PEDIT_FIELDS(ETH_, DMAC_31_0, 4, dmac, 0),

	PEDIT_FIELDS(ETH_, DMAC_47_32, 2, dmac, 4),

	PEDIT_FIELDS(ETH_, SMAC_15_0, 2, smac, 0),

	PEDIT_FIELDS(ETH_, SMAC_47_16, 4, smac, 2),

};



static struct ch_tc_flower_entry *allocate_flower_entry(void)
@@ -291,6 +293,13 @@ static void process_pedit_field(struct ch_filter_specification *fs, u32 val, 
		case PEDIT_ETH_DMAC_47_32_SMAC_15_0:

			if (~mask & PEDIT_ETH_DMAC_MASK)

				offload_pedit(fs, val, mask, ETH_DMAC_47_32);

			else

				offload_pedit(fs, val >> 16, mask >> 16,

					      ETH_SMAC_15_0);

			break;

		case PEDIT_ETH_SMAC_47_16:

			fs->newsmac = 1;

			offload_pedit(fs, val, mask, ETH_SMAC_47_16);

		}

	}

}
@@ -440,6 +449,7 @@ static int cxgb4_validate_flow_actions(struct net_device *dev, 
					switch (offset) {

					case PEDIT_ETH_DMAC_31_0:

					case PEDIT_ETH_DMAC_47_32_SMAC_15_0:

					case PEDIT_ETH_SMAC_47_16:

						break;

					default:

						netdev_err(dev, "%s: Unsupported pedit field\n",

drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.h

+3 −0
Original line number Diff line number Diff line
@@ -57,6 +57,8 @@ struct ch_tc_flower_entry { 
enum {

	ETH_DMAC_31_0,	/* dmac bits 0.. 31 */

	ETH_DMAC_47_32,	/* dmac bits 32..47 */

	ETH_SMAC_15_0,	/* smac bits 0.. 15 */

	ETH_SMAC_47_16,	/* smac bits 16..47 */

};



struct ch_tc_pedit_fields {
@@ -72,6 +74,7 @@ struct ch_tc_pedit_fields { 
#define PEDIT_ETH_DMAC_MASK		0xffff

#define PEDIT_ETH_DMAC_31_0		0x0

#define PEDIT_ETH_DMAC_47_32_SMAC_15_0	0x4

#define PEDIT_ETH_SMAC_47_16		0x8



int cxgb4_tc_flower_replace(struct net_device *dev,

			    struct tc_cls_flower_offload *cls);