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path: root/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
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Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c')
-rw-r--r--drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c111
1 files changed, 65 insertions, 46 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 51209119f0f2..999f6d93c7fe 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
@@ -218,13 +218,54 @@ void npc_config_secret_key(struct rvu *rvu, int blkaddr)
void npc_program_mkex_hash(struct rvu *rvu, int blkaddr)
{
+ struct npc_mcam_kex_hash *mh = rvu->kpu.mkex_hash;
struct hw_cap *hwcap = &rvu->hw->cap;
+ u8 intf, ld, hdr_offset, byte_len;
struct rvu_hwinfo *hw = rvu->hw;
- u8 intf;
+ u64 cfg;
+ /* Check if hardware supports hash extraction */
if (!hwcap->npc_hash_extract)
return;
+ /* Check if IPv6 source/destination address
+ * should be hash enabled.
+ * Hashing reduces 128bit SIP/DIP fields to 32bit
+ * so that 224 bit X2 key can be used for IPv6 based filters as well,
+ * which in turn results in more number of MCAM entries available for
+ * use.
+ *
+ * Hashing of IPV6 SIP/DIP is enabled in below scenarios
+ * 1. If the silicon variant supports hashing feature
+ * 2. If the number of bytes of IP addr being extracted is 4 bytes ie
+ * 32bit. The assumption here is that if user wants 8bytes of LSB of
+ * IP addr or full 16 bytes then his intention is not to use 32bit
+ * hash.
+ */
+ for (intf = 0; intf < hw->npc_intfs; intf++) {
+ for (ld = 0; ld < NPC_MAX_LD; ld++) {
+ cfg = rvu_read64(rvu, blkaddr,
+ NPC_AF_INTFX_LIDX_LTX_LDX_CFG(intf,
+ NPC_LID_LC,
+ NPC_LT_LC_IP6,
+ ld));
+ hdr_offset = FIELD_GET(NPC_HDR_OFFSET, cfg);
+ byte_len = FIELD_GET(NPC_BYTESM, cfg);
+ /* Hashing of IPv6 source/destination address should be
+ * enabled if,
+ * hdr_offset == 8 (offset of source IPv6 address) or
+ * hdr_offset == 24 (offset of destination IPv6)
+ * address) and the number of byte to be
+ * extracted is 4. As per hardware configuration
+ * byte_len should be == actual byte_len - 1.
+ * Hence byte_len is checked against 3 but nor 4.
+ */
+ if ((hdr_offset == 8 || hdr_offset == 24) && byte_len == 3)
+ mh->lid_lt_ld_hash_en[intf][NPC_LID_LC][NPC_LT_LC_IP6][ld] = true;
+ }
+ }
+
+ /* Update hash configuration if the field is hash enabled */
for (intf = 0; intf < hw->npc_intfs; intf++) {
npc_program_mkex_hash_rx(rvu, blkaddr, intf);
npc_program_mkex_hash_tx(rvu, blkaddr, intf);
@@ -350,22 +391,6 @@ int rvu_mbox_handler_npc_get_field_hash_info(struct rvu *rvu,
}
/**
- * rvu_npc_exact_mac2u64 - utility function to convert mac address to u64.
- * @mac_addr: MAC address.
- * Return: mdata for exact match table.
- */
-static u64 rvu_npc_exact_mac2u64(u8 *mac_addr)
-{
- u64 mac = 0;
- int index;
-
- for (index = ETH_ALEN - 1; index >= 0; index--)
- mac |= ((u64)*mac_addr++) << (8 * index);
-
- return mac;
-}
-
-/**
* rvu_exact_prepare_mdata - Make mdata for mcam entry
* @mac: MAC address
* @chan: Channel number.
@@ -375,7 +400,7 @@ static u64 rvu_npc_exact_mac2u64(u8 *mac_addr)
*/
static u64 rvu_exact_prepare_mdata(u8 *mac, u16 chan, u16 ctype, u64 mask)
{
- u64 ldata = rvu_npc_exact_mac2u64(mac);
+ u64 ldata = ether_addr_to_u64(mac);
/* Please note that mask is 48bit which excludes chan and ctype.
* Increase mask bits if we need to include them as well.
@@ -563,7 +588,7 @@ static u64 rvu_exact_prepare_table_entry(struct rvu *rvu, bool enable,
u8 ctype, u16 chan, u8 *mac_addr)
{
- u64 ldata = rvu_npc_exact_mac2u64(mac_addr);
+ u64 ldata = ether_addr_to_u64(mac_addr);
/* Enable or disable */
u64 mdata = FIELD_PREP(GENMASK_ULL(63, 63), enable ? 1 : 0);
@@ -1182,7 +1207,9 @@ static u16 __rvu_npc_exact_cmd_rules_cnt_update(struct rvu *rvu, int drop_mcam_i
if (promisc)
goto done;
- /* If all rules are deleted and not already in promisc mode; disable cam */
+ /* If all rules are deleted and not already in promisc mode;
+ * disable cam
+ */
if (!*cnt && val < 0) {
*enable_or_disable_cam = true;
goto done;
@@ -1438,12 +1465,11 @@ static int rvu_npc_exact_update_table_entry(struct rvu *rvu, u8 cgx_id, u8 lmac_
int rvu_npc_exact_promisc_disable(struct rvu *rvu, u16 pcifunc)
{
struct npc_exact_table *table;
- int pf = rvu_get_pf(pcifunc);
+ int pf = rvu_get_pf(rvu->pdev, pcifunc);
u8 cgx_id, lmac_id;
u32 drop_mcam_idx;
bool *promisc;
bool rc;
- u32 cnt;
table = rvu->hw->table;
@@ -1466,17 +1492,14 @@ int rvu_npc_exact_promisc_disable(struct rvu *rvu, u16 pcifunc)
return LMAC_AF_ERR_INVALID_PARAM;
}
*promisc = false;
- cnt = __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 0, NULL);
mutex_unlock(&table->lock);
- /* If no dmac filter entries configured, disable drop rule */
- if (!cnt)
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
- else
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, !*promisc);
+ /* Enable drop rule */
+ rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX,
+ true);
- dev_dbg(rvu->dev, "%s: disabled promisc mode (cgx=%d lmac=%d, cnt=%d)\n",
- __func__, cgx_id, lmac_id, cnt);
+ dev_dbg(rvu->dev, "%s: disabled promisc mode (cgx=%d lmac=%d)\n",
+ __func__, cgx_id, lmac_id);
return 0;
}
@@ -1489,12 +1512,11 @@ int rvu_npc_exact_promisc_disable(struct rvu *rvu, u16 pcifunc)
int rvu_npc_exact_promisc_enable(struct rvu *rvu, u16 pcifunc)
{
struct npc_exact_table *table;
- int pf = rvu_get_pf(pcifunc);
+ int pf = rvu_get_pf(rvu->pdev, pcifunc);
u8 cgx_id, lmac_id;
u32 drop_mcam_idx;
bool *promisc;
bool rc;
- u32 cnt;
table = rvu->hw->table;
@@ -1517,17 +1539,14 @@ int rvu_npc_exact_promisc_enable(struct rvu *rvu, u16 pcifunc)
return LMAC_AF_ERR_INVALID_PARAM;
}
*promisc = true;
- cnt = __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 0, NULL);
mutex_unlock(&table->lock);
- /* If no dmac filter entries configured, disable drop rule */
- if (!cnt)
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
- else
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, !*promisc);
+ /* disable drop rule */
+ rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX,
+ false);
- dev_dbg(rvu->dev, "%s: Enabled promisc mode (cgx=%d lmac=%d cnt=%d)\n",
- __func__, cgx_id, lmac_id, cnt);
+ dev_dbg(rvu->dev, "%s: Enabled promisc mode (cgx=%d lmac=%d)\n",
+ __func__, cgx_id, lmac_id);
return 0;
}
@@ -1541,7 +1560,7 @@ int rvu_npc_exact_promisc_enable(struct rvu *rvu, u16 pcifunc)
int rvu_npc_exact_mac_addr_reset(struct rvu *rvu, struct cgx_mac_addr_reset_req *req,
struct msg_rsp *rsp)
{
- int pf = rvu_get_pf(req->hdr.pcifunc);
+ int pf = rvu_get_pf(rvu->pdev, req->hdr.pcifunc);
u32 seq_id = req->index;
struct rvu_pfvf *pfvf;
u8 cgx_id, lmac_id;
@@ -1574,7 +1593,7 @@ int rvu_npc_exact_mac_addr_update(struct rvu *rvu,
struct cgx_mac_addr_update_req *req,
struct cgx_mac_addr_update_rsp *rsp)
{
- int pf = rvu_get_pf(req->hdr.pcifunc);
+ int pf = rvu_get_pf(rvu->pdev, req->hdr.pcifunc);
struct npc_exact_table_entry *entry;
struct npc_exact_table *table;
struct rvu_pfvf *pfvf;
@@ -1656,7 +1675,7 @@ int rvu_npc_exact_mac_addr_add(struct rvu *rvu,
struct cgx_mac_addr_add_req *req,
struct cgx_mac_addr_add_rsp *rsp)
{
- int pf = rvu_get_pf(req->hdr.pcifunc);
+ int pf = rvu_get_pf(rvu->pdev, req->hdr.pcifunc);
struct rvu_pfvf *pfvf;
u8 cgx_id, lmac_id;
int rc = 0;
@@ -1692,7 +1711,7 @@ int rvu_npc_exact_mac_addr_del(struct rvu *rvu,
struct cgx_mac_addr_del_req *req,
struct msg_rsp *rsp)
{
- int pf = rvu_get_pf(req->hdr.pcifunc);
+ int pf = rvu_get_pf(rvu->pdev, req->hdr.pcifunc);
int rc;
rc = rvu_npc_exact_del_table_entry_by_id(rvu, req->index);
@@ -1717,7 +1736,7 @@ int rvu_npc_exact_mac_addr_del(struct rvu *rvu,
int rvu_npc_exact_mac_addr_set(struct rvu *rvu, struct cgx_mac_addr_set_or_get *req,
struct cgx_mac_addr_set_or_get *rsp)
{
- int pf = rvu_get_pf(req->hdr.pcifunc);
+ int pf = rvu_get_pf(rvu->pdev, req->hdr.pcifunc);
u32 seq_id = req->index;
struct rvu_pfvf *pfvf;
u8 cgx_id, lmac_id;
@@ -1982,7 +2001,7 @@ int rvu_npc_exact_init(struct rvu *rvu)
}
/* Filter rules are only for PF */
- pcifunc = RVU_PFFUNC(i, 0);
+ pcifunc = RVU_PFFUNC(rvu->pdev, i, 0);
dev_dbg(rvu->dev,
"%s:Drop rule cgx=%d lmac=%d chan(val=0x%llx, mask=0x%llx\n",
generated by cgit (git 2.34.1) at 2025-12-28 13:16:36 +0000