Commit 6b3321ba authored by Sunil Goutham's avatar Sunil Goutham Committed by David S. Miller
Browse files

octeontx2-af: Enable packet length and csum validation 



Config NPC layer info from KPU profile into protocol
checker to identify outer L2/IPv4/TCP/UDP headers in a
packet. And enable IPv4 checksum validation.

L3/L4 and L4 CSUM validation will be enabled by PF/VF
drivers by configuring NIX_AF_LF(0..127)_RX_CFG via mbox
i.e 'nix_lf_alloc_req->rx_cfg'

Also enable setting of NPC_RESULT_S[L2B] when an outer
L2 broadcast address is detected. This will help in
installing NPC MCAM rules for broadcast packets.

Signed-off-by: default avatarSunil Goutham <sgoutham@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d02913d9

drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c

+14 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include "rvu_struct.h"

#include "rvu_reg.h"

#include "rvu.h"

#include "npc.h"

#include "cgx.h"



static int nix_update_bcast_mce_list(struct rvu *rvu, u16 pcifunc, bool add);
@@ -1630,6 +1631,19 @@ int rvu_nix_init(struct rvu *rvu) 
		err = nix_setup_mcast(rvu, hw->nix0, blkaddr);

		if (err)

			return err;



		/* Config Outer L2, IP, TCP and UDP's NPC layer info.

		 * This helps HW protocol checker to identify headers

		 * and validate length and checksums.

		 */

		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OL2,

			    (NPC_LID_LA << 8) | (NPC_LT_LA_ETHER << 4) | 0x0F);

		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OUDP,

			    (NPC_LID_LD << 8) | (NPC_LT_LD_UDP << 4) | 0x0F);

		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OTCP,

			    (NPC_LID_LD << 8) | (NPC_LT_LD_TCP << 4) | 0x0F);

		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OIP4,

			    (NPC_LID_LC << 8) | (NPC_LT_LC_IP << 4) | 0x0F);

	}

	return 0;

}

drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c

+14 −0
Original line number Diff line number Diff line
@@ -220,6 +220,20 @@ int rvu_npc_init(struct rvu *rvu) 
	/* Configure KPU profile */

	npc_parser_profile_init(rvu, blkaddr);



	/* Config Outer L2, IPv4's NPC layer info */

	rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_OL2,

		    (NPC_LID_LA << 8) | (NPC_LT_LA_ETHER << 4) | 0x0F);

	rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_OIP4,

		    (NPC_LID_LC << 8) | (NPC_LT_LC_IP << 4) | 0x0F);



	/* Enable below for Rx pkts.

	 * - Outer IPv4 header checksum validation.

	 * - Detect outer L2 broadcast address and set NPC_RESULT_S[L2M].

	 */

	rvu_write64(rvu, blkaddr, NPC_AF_PCK_CFG,

		    rvu_read64(rvu, blkaddr, NPC_AF_PCK_CFG) |

		    BIT_ULL(6) | BIT_ULL(2));



	return 0;

}