* [net PATCH] octeontx2-af: Fix issues with NPC field hash extract
@ 2023-07-03 10:37 Suman Ghosh
0 siblings, 0 replies; only message in thread
From: Suman Ghosh @ 2023-07-03 10:37 UTC (permalink / raw)
To: sgoutham, gakula, sbhatta, hkelam, davem, edumazet, kuba, pabeni,
netdev, linux-kernel
Cc: Suman Ghosh
1. Allow field hash configuration for both source and destination IPv6.
2. Configure hardware parser based on hash extract feature enable flag
for IPv6.
3. Fix IPv6 endianness issue while updating the source/destination IP
address via ntuple rule.
4. Update hash extraction mbox message.
Fixes: 56d9f5fd2246 ("octeontx2-af: Use hashed field in MCAM key")
Signed-off-by: Suman Ghosh <sumang@marvell.com>
---
.../net/ethernet/marvell/octeontx2/af/mbox.h | 16 ++-
.../marvell/octeontx2/af/rvu_npc_fs.c | 23 ++--
.../marvell/octeontx2/af/rvu_npc_fs.h | 4 +
.../marvell/octeontx2/af/rvu_npc_hash.c | 118 ++++++++++--------
.../marvell/octeontx2/af/rvu_npc_hash.h | 10 +-
5 files changed, 105 insertions(+), 66 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 5727d67e0259..f43f162e8a99 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -245,9 +245,9 @@ M(NPC_MCAM_READ_BASE_RULE, 0x6011, npc_read_base_steer_rule, \
M(NPC_MCAM_GET_STATS, 0x6012, npc_mcam_entry_stats, \
npc_mcam_get_stats_req, \
npc_mcam_get_stats_rsp) \
-M(NPC_GET_SECRET_KEY, 0x6013, npc_get_secret_key, \
- npc_get_secret_key_req, \
- npc_get_secret_key_rsp) \
+M(NPC_GET_FIELD_HASH_INFO, 0x6013, npc_get_field_hash_info, \
+ npc_get_field_hash_info_req, \
+ npc_get_field_hash_info_rsp) \
M(NPC_GET_FIELD_STATUS, 0x6014, npc_get_field_status, \
npc_get_field_status_req, \
npc_get_field_status_rsp) \
@@ -1524,14 +1524,20 @@ struct npc_mcam_get_stats_rsp {
u8 stat_ena; /* enabled */
};
-struct npc_get_secret_key_req {
+struct npc_get_field_hash_info_req {
struct mbox_msghdr hdr;
u8 intf;
};
-struct npc_get_secret_key_rsp {
+struct npc_get_field_hash_info_rsp {
struct mbox_msghdr hdr;
u64 secret_key[3];
+#define NPC_MAX_HASH 2
+#define NPC_MAX_HASH_MASK 2
+ /* NPC_AF_INTF(0..1)_HASH(0..1)_MASK(0..1) */
+ u64 hash_mask[NPC_MAX_INTF][NPC_MAX_HASH][NPC_MAX_HASH_MASK];
+ /* NPC_AF_INTF(0..1)_HASH(0..1)_RESULT_CTRL */
+ u64 hash_ctrl[NPC_MAX_INTF][NPC_MAX_HASH];
};
enum ptp_op {
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
index 006beb5cf98d..12817d56bdf9 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
@@ -13,11 +13,6 @@
#include "rvu_npc_fs.h"
#include "rvu_npc_hash.h"
-#define NPC_BYTESM GENMASK_ULL(19, 16)
-#define NPC_HDR_OFFSET GENMASK_ULL(15, 8)
-#define NPC_KEY_OFFSET GENMASK_ULL(5, 0)
-#define NPC_LDATA_EN BIT_ULL(7)
-
static const char * const npc_flow_names[] = {
[NPC_DMAC] = "dmac",
[NPC_SMAC] = "smac",
@@ -442,6 +437,7 @@ static void npc_handle_multi_layer_fields(struct rvu *rvu, int blkaddr, u8 intf)
static void npc_scan_ldata(struct rvu *rvu, int blkaddr, u8 lid,
u8 lt, u64 cfg, u8 intf)
{
+ struct npc_mcam_kex_hash *mkex_hash = rvu->kpu.mkex_hash;
struct npc_mcam *mcam = &rvu->hw->mcam;
u8 hdr, key, nr_bytes, bit_offset;
u8 la_ltype, la_start;
@@ -490,8 +486,21 @@ do { \
NPC_SCAN_HDR(NPC_SIP_IPV4, NPC_LID_LC, NPC_LT_LC_IP, 12, 4);
NPC_SCAN_HDR(NPC_DIP_IPV4, NPC_LID_LC, NPC_LT_LC_IP, 16, 4);
NPC_SCAN_HDR(NPC_IPFRAG_IPV6, NPC_LID_LC, NPC_LT_LC_IP6_EXT, 6, 1);
- NPC_SCAN_HDR(NPC_SIP_IPV6, NPC_LID_LC, NPC_LT_LC_IP6, 8, 16);
- NPC_SCAN_HDR(NPC_DIP_IPV6, NPC_LID_LC, NPC_LT_LC_IP6, 24, 16);
+ if (rvu->hw->cap.npc_hash_extract) {
+ if (mkex_hash->lid_lt_ld_hash_en[intf][lid][lt][0])
+ NPC_SCAN_HDR(NPC_SIP_IPV6, NPC_LID_LC, NPC_LT_LC_IP6, 8, 4);
+ else
+ NPC_SCAN_HDR(NPC_SIP_IPV6, NPC_LID_LC, NPC_LT_LC_IP6, 8, 16);
+
+ if (mkex_hash->lid_lt_ld_hash_en[intf][lid][lt][1])
+ NPC_SCAN_HDR(NPC_DIP_IPV6, NPC_LID_LC, NPC_LT_LC_IP6, 24, 4);
+ else
+ NPC_SCAN_HDR(NPC_DIP_IPV6, NPC_LID_LC, NPC_LT_LC_IP6, 24, 16);
+ } else {
+ NPC_SCAN_HDR(NPC_SIP_IPV6, NPC_LID_LC, NPC_LT_LC_IP6, 8, 16);
+ NPC_SCAN_HDR(NPC_DIP_IPV6, NPC_LID_LC, NPC_LT_LC_IP6, 24, 16);
+ }
+
NPC_SCAN_HDR(NPC_SPORT_UDP, NPC_LID_LD, NPC_LT_LD_UDP, 0, 2);
NPC_SCAN_HDR(NPC_DPORT_UDP, NPC_LID_LD, NPC_LT_LD_UDP, 2, 2);
NPC_SCAN_HDR(NPC_SPORT_TCP, NPC_LID_LD, NPC_LT_LD_TCP, 0, 2);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.h
index bdd65ce56a32..1466def630cf 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.h
@@ -9,6 +9,10 @@
#define __RVU_NPC_FS_H
#define IPV6_WORDS 4
+#define NPC_BYTESM GENMASK_ULL(19, 16)
+#define NPC_HDR_OFFSET GENMASK_ULL(15, 8)
+#define NPC_KEY_OFFSET GENMASK_ULL(5, 0)
+#define NPC_LDATA_EN BIT_ULL(7)
void npc_update_entry(struct rvu *rvu, enum key_fields type,
struct mcam_entry *entry, u64 val_lo,
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
index 20ebb9c95c73..01031ecf8278 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
@@ -78,42 +78,42 @@ static u32 rvu_npc_toeplitz_hash(const u64 *data, u64 *key, size_t data_bit_len,
return hash_out;
}
-u32 npc_field_hash_calc(u64 *ldata, struct npc_mcam_kex_hash *mkex_hash,
- u64 *secret_key, u8 intf, u8 hash_idx)
+u32 npc_field_hash_calc(u64 *ldata, struct npc_get_field_hash_info_rsp rsp,
+ u8 intf, u8 hash_idx)
{
u64 hash_key[3];
u64 data_padded[2];
u32 field_hash;
- hash_key[0] = secret_key[1] << 31;
- hash_key[0] |= secret_key[2];
- hash_key[1] = secret_key[1] >> 33;
- hash_key[1] |= secret_key[0] << 31;
- hash_key[2] = secret_key[0] >> 33;
+ hash_key[0] = rsp.secret_key[1] << 31;
+ hash_key[0] |= rsp.secret_key[2];
+ hash_key[1] = rsp.secret_key[1] >> 33;
+ hash_key[1] |= rsp.secret_key[0] << 31;
+ hash_key[2] = rsp.secret_key[0] >> 33;
- data_padded[0] = mkex_hash->hash_mask[intf][hash_idx][0] & ldata[0];
- data_padded[1] = mkex_hash->hash_mask[intf][hash_idx][1] & ldata[1];
+ data_padded[0] = rsp.hash_mask[intf][hash_idx][0] & ldata[0];
+ data_padded[1] = rsp.hash_mask[intf][hash_idx][1] & ldata[1];
field_hash = rvu_npc_toeplitz_hash(data_padded, hash_key, 128, 159);
- field_hash &= mkex_hash->hash_ctrl[intf][hash_idx] >> 32;
- field_hash |= mkex_hash->hash_ctrl[intf][hash_idx];
+ field_hash &= FIELD_GET(GENMASK(63, 32), rsp.hash_ctrl[intf][hash_idx]);
+ field_hash |= FIELD_GET(GENMASK(31, 0), rsp.hash_ctrl[intf][hash_idx]);
return field_hash;
}
-static u64 npc_update_use_hash(int lt, int ld)
+static u64 npc_update_use_hash(struct rvu *rvu, int blkaddr,
+ u8 intf, int lid, int lt, int ld)
{
- u64 cfg = 0;
-
- switch (lt) {
- case NPC_LT_LC_IP6:
- /* Update use_hash(bit-20) and bytesm1 (bit-16:19)
- * in KEX_LD_CFG
- */
- cfg = KEX_LD_CFG_USE_HASH(0x1, 0x03,
- ld ? 0x8 : 0x18,
- 0x1, 0x0, 0x10);
- break;
- }
+ u8 hdr, key;
+ u64 cfg;
+
+ cfg = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_LIDX_LTX_LDX_CFG(intf, lid, lt, ld));
+ hdr = FIELD_GET(NPC_HDR_OFFSET, cfg);
+ key = FIELD_GET(NPC_KEY_OFFSET, cfg);
+
+ /* Update use_hash(bit-20) to 'true' and
+ * bytesm1(bit-16:19) to '0x3' in KEX_LD_CFG
+ */
+ cfg = KEX_LD_CFG_USE_HASH(0x1, 0x03, hdr, 0x1, 0x0, key);
return cfg;
}
@@ -132,12 +132,12 @@ static void npc_program_mkex_hash_rx(struct rvu *rvu, int blkaddr,
for (lt = 0; lt < NPC_MAX_LT; lt++) {
for (ld = 0; ld < NPC_MAX_LD; ld++) {
if (mkex_hash->lid_lt_ld_hash_en[intf][lid][lt][ld]) {
- u64 cfg = npc_update_use_hash(lt, ld);
+ u64 cfg;
- hash_cnt++;
if (hash_cnt == NPC_MAX_HASH)
return;
+ cfg = npc_update_use_hash(rvu, blkaddr, intf, lid, lt, ld);
/* Set updated KEX configuration */
SET_KEX_LD(intf, lid, lt, ld, cfg);
/* Set HASH configuration */
@@ -149,6 +149,7 @@ static void npc_program_mkex_hash_rx(struct rvu *rvu, int blkaddr,
mkex_hash->hash_mask[intf][ld][1]);
SET_KEX_LD_HASH_CTRL(intf, ld,
mkex_hash->hash_ctrl[intf][ld]);
+ hash_cnt++;
}
}
}
@@ -169,12 +170,12 @@ static void npc_program_mkex_hash_tx(struct rvu *rvu, int blkaddr,
for (lt = 0; lt < NPC_MAX_LT; lt++) {
for (ld = 0; ld < NPC_MAX_LD; ld++)
if (mkex_hash->lid_lt_ld_hash_en[intf][lid][lt][ld]) {
- u64 cfg = npc_update_use_hash(lt, ld);
+ u64 cfg;
- hash_cnt++;
if (hash_cnt == NPC_MAX_HASH)
return;
+ cfg = npc_update_use_hash(rvu, blkaddr, intf, lid, lt, ld);
/* Set updated KEX configuration */
SET_KEX_LD(intf, lid, lt, ld, cfg);
/* Set HASH configuration */
@@ -187,8 +188,6 @@ static void npc_program_mkex_hash_tx(struct rvu *rvu, int blkaddr,
SET_KEX_LD_HASH_CTRL(intf, ld,
mkex_hash->hash_ctrl[intf][ld]);
hash_cnt++;
- if (hash_cnt == NPC_MAX_HASH)
- return;
}
}
}
@@ -238,8 +237,8 @@ void npc_update_field_hash(struct rvu *rvu, u8 intf,
struct flow_msg *omask)
{
struct npc_mcam_kex_hash *mkex_hash = rvu->kpu.mkex_hash;
- struct npc_get_secret_key_req req;
- struct npc_get_secret_key_rsp rsp;
+ struct npc_get_field_hash_info_req req;
+ struct npc_get_field_hash_info_rsp rsp;
u64 ldata[2], cfg;
u32 field_hash;
u8 hash_idx;
@@ -250,7 +249,7 @@ void npc_update_field_hash(struct rvu *rvu, u8 intf,
}
req.intf = intf;
- rvu_mbox_handler_npc_get_secret_key(rvu, &req, &rsp);
+ rvu_mbox_handler_npc_get_field_hash_info(rvu, &req, &rsp);
for (hash_idx = 0; hash_idx < NPC_MAX_HASH; hash_idx++) {
cfg = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_HASHX_CFG(intf, hash_idx));
@@ -266,39 +265,40 @@ void npc_update_field_hash(struct rvu *rvu, u8 intf,
* is hashed to 32 bit value.
*/
case NPC_LT_LC_IP6:
- if (features & BIT_ULL(NPC_SIP_IPV6)) {
+ /* ld[0] == hash_idx[0] == Source IPv6
+ * ld[1] == hash_idx[1] == Destination IPv6
+ */
+ if ((features & BIT_ULL(NPC_SIP_IPV6)) && !hash_idx) {
u32 src_ip[IPV6_WORDS];
be32_to_cpu_array(src_ip, pkt->ip6src, IPV6_WORDS);
- ldata[0] = (u64)src_ip[0] << 32 | src_ip[1];
- ldata[1] = (u64)src_ip[2] << 32 | src_ip[3];
+ ldata[1] = (u64)src_ip[0] << 32 | src_ip[1];
+ ldata[0] = (u64)src_ip[2] << 32 | src_ip[3];
field_hash = npc_field_hash_calc(ldata,
- mkex_hash,
- rsp.secret_key,
+ rsp,
intf,
hash_idx);
npc_update_entry(rvu, NPC_SIP_IPV6, entry,
- field_hash, 0, 32, 0, intf);
+ field_hash, 0,
+ GENMASK(31, 0), 0, intf);
memcpy(&opkt->ip6src, &pkt->ip6src,
sizeof(pkt->ip6src));
memcpy(&omask->ip6src, &mask->ip6src,
sizeof(mask->ip6src));
- break;
- }
-
- if (features & BIT_ULL(NPC_DIP_IPV6)) {
+ } else if ((features & BIT_ULL(NPC_DIP_IPV6)) &&
+ !hash_idx) {
u32 dst_ip[IPV6_WORDS];
be32_to_cpu_array(dst_ip, pkt->ip6dst, IPV6_WORDS);
- ldata[0] = (u64)dst_ip[0] << 32 | dst_ip[1];
- ldata[1] = (u64)dst_ip[2] << 32 | dst_ip[3];
+ ldata[1] = (u64)dst_ip[0] << 32 | dst_ip[1];
+ ldata[0] = (u64)dst_ip[2] << 32 | dst_ip[3];
field_hash = npc_field_hash_calc(ldata,
- mkex_hash,
- rsp.secret_key,
+ rsp,
intf,
hash_idx);
npc_update_entry(rvu, NPC_DIP_IPV6, entry,
- field_hash, 0, 32, 0, intf);
+ field_hash, 0,
+ GENMASK(31, 0), 0, intf);
memcpy(&opkt->ip6dst, &pkt->ip6dst,
sizeof(pkt->ip6dst));
memcpy(&omask->ip6dst, &mask->ip6dst,
@@ -311,13 +311,13 @@ void npc_update_field_hash(struct rvu *rvu, u8 intf,
}
}
-int rvu_mbox_handler_npc_get_secret_key(struct rvu *rvu,
- struct npc_get_secret_key_req *req,
- struct npc_get_secret_key_rsp *rsp)
+int rvu_mbox_handler_npc_get_field_hash_info(struct rvu *rvu,
+ struct npc_get_field_hash_info_req *req,
+ struct npc_get_field_hash_info_rsp *rsp)
{
u64 *secret_key = rsp->secret_key;
u8 intf = req->intf;
- int blkaddr;
+ int hash_idx, hash_mask_idx, blkaddr;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
if (blkaddr < 0) {
@@ -329,6 +329,20 @@ int rvu_mbox_handler_npc_get_secret_key(struct rvu *rvu,
secret_key[1] = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY1(intf));
secret_key[2] = rvu_read64(rvu, blkaddr, NPC_AF_INTFX_SECRET_KEY2(intf));
+ for (hash_idx = 0; hash_idx < NPC_MAX_HASH; hash_idx++) {
+ for (hash_mask_idx = 0; hash_mask_idx < NPC_MAX_HASH_MASK; hash_mask_idx++) {
+ rsp->hash_mask[NIX_INTF_RX][hash_idx][hash_mask_idx] =
+ GET_KEX_LD_HASH_MASK(NIX_INTF_RX, hash_idx, hash_mask_idx);
+ rsp->hash_mask[NIX_INTF_TX][hash_idx][hash_mask_idx] =
+ GET_KEX_LD_HASH_MASK(NIX_INTF_TX, hash_idx, hash_mask_idx);
+ }
+ }
+
+ for (hash_idx = 0; hash_idx < NPC_MAX_INTF; hash_idx++)
+ for (hash_mask_idx = 0; hash_mask_idx < NPC_MAX_HASH; hash_mask_idx++)
+ rsp->hash_ctrl[hash_idx][hash_mask_idx] =
+ GET_KEX_LD_HASH_CTRL(hash_idx, hash_mask_idx);
+
return 0;
}
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h
index 3efeb09c58de..fc6142aa4b92 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h
@@ -35,6 +35,12 @@
rvu_write64(rvu, blkaddr, \
NPC_AF_INTFX_HASHX_RESULT_CTRL(intf, ld), cfg)
+#define GET_KEX_LD_HASH_CTRL(intf, ld) \
+ rvu_read64(rvu, blkaddr, NPC_AF_INTFX_HASHX_RESULT_CTRL(intf, ld))
+
+#define GET_KEX_LD_HASH_MASK(intf, ld, mask_idx) \
+ rvu_read64(rvu, blkaddr, NPC_AF_INTFX_HASHX_MASKX(intf, ld, mask_idx))
+
struct npc_mcam_kex_hash {
/* NPC_AF_INTF(0..1)_LID(0..7)_LT(0..15)_LD(0..1)_CFG */
bool lid_lt_ld_hash_en[NPC_MAX_INTF][NPC_MAX_LID][NPC_MAX_LT][NPC_MAX_LD];
@@ -56,8 +62,8 @@ void npc_update_field_hash(struct rvu *rvu, u8 intf,
struct flow_msg *omask);
void npc_config_secret_key(struct rvu *rvu, int blkaddr);
void npc_program_mkex_hash(struct rvu *rvu, int blkaddr);
-u32 npc_field_hash_calc(u64 *ldata, struct npc_mcam_kex_hash *mkex_hash,
- u64 *secret_key, u8 intf, u8 hash_idx);
+u32 npc_field_hash_calc(u64 *ldata, struct npc_get_field_hash_info_rsp rsp,
+ u8 intf, u8 hash_idx);
static struct npc_mcam_kex_hash npc_mkex_hash_default __maybe_unused = {
.lid_lt_ld_hash_en = {
--
2.25.1
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2023-07-03 10:37 [net PATCH] octeontx2-af: Fix issues with NPC field hash extract Suman Ghosh
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