netdev - [net PATCH 3/3] octeontx2-af: Fix hash configuration for both source and destination IPv6

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230712111604.2290974-4-sumang@marvell.com>
Date: Wed, 12 Jul 2023 16:46:04 +0530
From: Suman Ghosh <sumang@...vell.com>
To: <sgoutham@...vell.com>, <gakula@...vell.com>, <sbhatta@...vell.com>,
        <hkelam@...vell.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC: Suman Ghosh <sumang@...vell.com>
Subject: [net PATCH 3/3] octeontx2-af: Fix hash configuration for both source and destination IPv6

As of today, hash reduction was supported only for source IPv6 address.
This patch fixes that and adds supports for both source and
destination IPv6 address.

Fixes: a95ab93550d3 ("octeontx2-af: Use hashed field in MCAM key")
Signed-off-by: Suman Ghosh <sumang@...vell.com>
---
 .../marvell/octeontx2/af/rvu_npc_hash.c       | 37 +++++++++----------
 1 file changed, 18 insertions(+), 19 deletions(-)

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 76553e0c216f..e7b71f2f3ad3 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
@@ -100,20 +100,20 @@ u32 npc_field_hash_calc(u64 *ldata, struct npc_get_field_hash_info_rsp rsp,
 	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;
 				}
 		}
 	}
-- 
2.25.1