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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: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sunil Goutham 2018-10-22 23:25:57 +05:30 committed by David S. Miller
parent d02913d916
commit 6b3321bacc
2 changed files with 28 additions and 0 deletions
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14
drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
View File

@ -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;
}

14
drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
View File

@ -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;
}