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Message-ID: <20210211014631.9578-13-gakula@marvell.com>
Date: Thu, 11 Feb 2021 07:16:29 +0530
From: Geetha sowjanya <gakula@...vell.com>
To: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-crypto@...r.kernel.org>
CC: <davem@...emloft.net>, <kuba@...nel.org>, <sgoutham@...vell.com>,
<lcherian@...vell.com>, <hkelam@...vell.com>,
<sbhatta@...vell.com>, <jerinj@...vell.com>,
<bbrezillon@...nel.org>, <arno@...isbad.org>,
<schalla@...vell.com>, Rakesh Babu <rsaladi2@...vell.com>,
Geetha sowjanya <gakula@...vell.com>,
Sunil Kovvuri Goutham <Sunil.Goutham@...ium.com>
Subject: [net-next v5 12/14] octeontx2-af: cn10k: Add RPM LMAC pause frame support
From: Rakesh Babu <rsaladi2@...vell.com>
Flow control configuration is different for CGX(Octeontx2)
and RPM(CN10K) functional blocks. This patch adds the necessary
changes for RPM to support 802.3 pause frames configuration on
cn10k platforms.
Signed-off-by: Rakesh Babu <rsaladi2@...vell.com>
Signed-off-by: Geetha sowjanya <gakula@...vell.com>
Signed-off-by: Sunil Kovvuri Goutham <Sunil.Goutham@...ium.com>
---
.../net/ethernet/marvell/octeontx2/af/cgx.c | 27 ++--
.../marvell/octeontx2/af/lmac_common.h | 18 +++
.../net/ethernet/marvell/octeontx2/af/rpm.c | 134 ++++++++++++++++++
.../net/ethernet/marvell/octeontx2/af/rpm.h | 18 ++-
.../ethernet/marvell/octeontx2/af/rvu_cgx.c | 19 ++-
.../ethernet/marvell/octeontx2/af/rvu_nix.c | 8 +-
6 files changed, 201 insertions(+), 23 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
index 5e7c7dd46ad7..cc53aa1d6d3a 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -306,9 +306,6 @@ void cgx_lmac_enadis_rx_pause_fwding(void *cgxd, int lmac_id, bool enable)
struct cgx *cgx = cgxd;
u64 cfg;
- if (is_dev_rpm(cgx))
- return;
-
if (!cgx)
return;
@@ -397,8 +394,8 @@ int cgx_lmac_tx_enable(void *cgxd, int lmac_id, bool enable)
return !!(last & DATA_PKT_TX_EN);
}
-int cgx_lmac_get_pause_frm(void *cgxd, int lmac_id,
- u8 *tx_pause, u8 *rx_pause)
+static int cgx_lmac_get_pause_frm_status(void *cgxd, int lmac_id,
+ u8 *tx_pause, u8 *rx_pause)
{
struct cgx *cgx = cgxd;
u64 cfg;
@@ -417,8 +414,8 @@ int cgx_lmac_get_pause_frm(void *cgxd, int lmac_id,
return 0;
}
-int cgx_lmac_set_pause_frm(void *cgxd, int lmac_id,
- u8 tx_pause, u8 rx_pause)
+static int cgx_lmac_enadis_pause_frm(void *cgxd, int lmac_id,
+ u8 tx_pause, u8 rx_pause)
{
struct cgx *cgx = cgxd;
u64 cfg;
@@ -450,13 +447,11 @@ int cgx_lmac_set_pause_frm(void *cgxd, int lmac_id,
return 0;
}
-static void cgx_lmac_pause_frm_config(struct cgx *cgx, int lmac_id, bool enable)
+static void cgx_lmac_pause_frm_config(void *cgxd, int lmac_id, bool enable)
{
+ struct cgx *cgx = cgxd;
u64 cfg;
- if (is_dev_rpm(cgx))
- return;
-
if (!is_lmac_valid(cgx, lmac_id))
return;
if (enable) {
@@ -996,7 +991,7 @@ static int cgx_lmac_init(struct cgx *cgx)
/* Add reference */
cgx->lmac_idmap[lmac->lmac_id] = lmac;
- cgx_lmac_pause_frm_config(cgx, lmac->lmac_id, true);
+ cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, true);
set_bit(lmac->lmac_id, &cgx->lmac_bmap);
}
@@ -1025,7 +1020,7 @@ static int cgx_lmac_exit(struct cgx *cgx)
lmac = cgx->lmac_idmap[i];
if (!lmac)
continue;
- cgx_lmac_pause_frm_config(cgx, lmac->lmac_id, false);
+ cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, false);
cgx_configure_interrupt(cgx, lmac, lmac->lmac_id, true);
kfree(lmac->name);
kfree(lmac);
@@ -1037,7 +1032,7 @@ static int cgx_lmac_exit(struct cgx *cgx)
static void cgx_populate_features(struct cgx *cgx)
{
if (is_dev_rpm(cgx))
- cgx->hw_features = RVU_MAC_RPM;
+ cgx->hw_features = (RVU_MAC_RPM | RVU_LMAC_FEAT_FC);
else
cgx->hw_features = (RVU_LMAC_FEAT_FC | RVU_LMAC_FEAT_PTP);
}
@@ -1053,6 +1048,10 @@ static struct mac_ops cgx_mac_ops = {
.lmac_fwi = CGX_LMAC_FWI,
.non_contiguous_serdes_lane = false,
.get_nr_lmacs = cgx_get_nr_lmacs,
+ .mac_enadis_rx_pause_fwding = cgx_lmac_enadis_rx_pause_fwding,
+ .mac_get_pause_frm_status = cgx_lmac_get_pause_frm_status,
+ .mac_enadis_pause_frm = cgx_lmac_enadis_pause_frm,
+ .mac_pause_frm_config = cgx_lmac_pause_frm_config,
};
static int cgx_probe(struct pci_dev *pdev, const struct pci_device_id *id)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h b/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h
index 9c5a9c58b2d7..b4eb337ccbdd 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/lmac_common.h
@@ -67,6 +67,24 @@ struct mac_ops {
* number of setbits in lmac_exist tells number of lmacs
*/
int (*get_nr_lmacs)(void *cgx);
+
+ /* Enable LMAC Pause Frame Configuration */
+ void (*mac_enadis_rx_pause_fwding)(void *cgxd,
+ int lmac_id,
+ bool enable);
+ int (*mac_get_pause_frm_status)(void *cgxd,
+ int lmac_id,
+ u8 *tx_pause,
+ u8 *rx_pause);
+
+ int (*mac_enadis_pause_frm)(void *cgxd,
+ int lmac_id,
+ u8 tx_pause,
+ u8 rx_pause);
+ void (*mac_pause_frm_config)(void *cgxd,
+ int lmac_id,
+ bool enable);
+
};
struct cgx {
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
index e97baeea4e19..8a4241abaa2a 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
@@ -19,6 +19,10 @@ static struct mac_ops rpm_mac_ops = {
.lmac_fwi = RPM_LMAC_FWI,
.non_contiguous_serdes_lane = true,
.get_nr_lmacs = rpm_get_nr_lmacs,
+ .mac_enadis_rx_pause_fwding = rpm_lmac_enadis_rx_pause_fwding,
+ .mac_get_pause_frm_status = rpm_lmac_get_pause_frm_status,
+ .mac_enadis_pause_frm = rpm_lmac_enadis_pause_frm,
+ .mac_pause_frm_config = rpm_lmac_pause_frm_config,
};
struct mac_ops *rpm_get_mac_ops(void)
@@ -26,6 +30,11 @@ struct mac_ops *rpm_get_mac_ops(void)
return &rpm_mac_ops;
}
+static void rpm_write(rpm_t *rpm, u64 lmac, u64 offset, u64 val)
+{
+ cgx_write(rpm, lmac, offset, val);
+}
+
static u64 rpm_read(rpm_t *rpm, u64 lmac, u64 offset)
{
return cgx_read(rpm, lmac, offset);
@@ -37,3 +46,128 @@ int rpm_get_nr_lmacs(void *rpmd)
return hweight8(rpm_read(rpm, 0, CGXX_CMRX_RX_LMACS) & 0xFULL);
}
+
+void rpm_lmac_enadis_rx_pause_fwding(void *rpmd, int lmac_id, bool enable)
+{
+ struct cgx *rpm = rpmd;
+ u64 cfg;
+
+ if (!rpm)
+ return;
+
+ if (enable) {
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+ } else {
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+ }
+}
+
+int rpm_lmac_get_pause_frm_status(void *rpmd, int lmac_id,
+ u8 *tx_pause, u8 *rx_pause)
+{
+ rpm_t *rpm = rpmd;
+ u64 cfg;
+
+ if (!is_lmac_valid(rpm, lmac_id))
+ return -ENODEV;
+
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ *rx_pause = !(cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE);
+
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ *tx_pause = !(cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE);
+ return 0;
+}
+
+int rpm_lmac_enadis_pause_frm(void *rpmd, int lmac_id, u8 tx_pause,
+ u8 rx_pause)
+{
+ rpm_t *rpm = rpmd;
+ u64 cfg;
+
+ if (!is_lmac_valid(rpm, lmac_id))
+ return -ENODEV;
+
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE;
+ cfg |= rx_pause ? 0x0 : RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE;
+ cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
+ cfg |= rx_pause ? 0x0 : RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE;
+ cfg |= tx_pause ? 0x0 : RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+
+ cfg = rpm_read(rpm, 0, RPMX_CMR_RX_OVR_BP);
+ if (tx_pause) {
+ cfg &= ~RPMX_CMR_RX_OVR_BP_EN(lmac_id);
+ } else {
+ cfg |= RPMX_CMR_RX_OVR_BP_EN(lmac_id);
+ cfg &= ~RPMX_CMR_RX_OVR_BP_BP(lmac_id);
+ }
+ rpm_write(rpm, 0, RPMX_CMR_RX_OVR_BP, cfg);
+ return 0;
+}
+
+void rpm_lmac_pause_frm_config(void *rpmd, int lmac_id, bool enable)
+{
+ rpm_t *rpm = rpmd;
+ u64 cfg;
+
+ if (enable) {
+ /* Enable 802.3 pause frame mode */
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PFC_MODE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+
+ /* Enable receive pause frames */
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+
+ /* Enable forward pause to TX block */
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+
+ /* Enable pause frames transmission */
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+
+ /* Set pause time and interval */
+ cfg = rpm_read(rpm, lmac_id,
+ RPMX_MTI_MAC100X_CL01_PAUSE_QUANTA);
+ cfg &= ~0xFFFFULL;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_CL01_PAUSE_QUANTA,
+ cfg | RPM_DEFAULT_PAUSE_TIME);
+ /* Set pause interval as the hardware default is too short */
+ cfg = rpm_read(rpm, lmac_id,
+ RPMX_MTI_MAC100X_CL01_QUANTA_THRESH);
+ cfg &= ~0xFFFFULL;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_CL01_QUANTA_THRESH,
+ cfg | (RPM_DEFAULT_PAUSE_TIME / 2));
+
+ } else {
+ /* ALL pause frames received are completely ignored */
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+
+ /* Disable forward pause to TX block */
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+
+ /* Disable pause frames transmission */
+ cfg = rpm_read(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
+ cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE;
+ rpm_write(rpm, lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, cfg);
+ }
+}
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.h b/drivers/net/ethernet/marvell/octeontx2/af/rpm.h
index 1779e8b689e8..0e8b4560b3c3 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.h
@@ -21,9 +21,25 @@
#define RPMX_CMRX_LINK_RANGE_MASK GENMASK_ULL(19, 16)
#define RPMX_CMRX_LINK_BASE_MASK GENMASK_ULL(11, 0)
-
+#define RPMX_MTI_MAC100X_COMMAND_CONFIG 0x8010
+#define RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE BIT_ULL(29)
+#define RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE BIT_ULL(28)
+#define RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE BIT_ULL(8)
+#define RPMX_MTI_MAC100X_COMMAND_CONFIG_PFC_MODE BIT_ULL(19)
+#define RPMX_MTI_MAC100X_CL01_PAUSE_QUANTA 0x80A8
+#define RPMX_MTI_MAC100X_CL01_QUANTA_THRESH 0x80C8
+#define RPM_DEFAULT_PAUSE_TIME 0xFFFF
+#define RPMX_CMR_RX_OVR_BP 0x4120
+#define RPMX_CMR_RX_OVR_BP_EN(x) BIT_ULL((x) + 8)
+#define RPMX_CMR_RX_OVR_BP_BP(x) BIT_ULL((x) + 4)
#define RPM_LMAC_FWI 0xa
/* Function Declarations */
+void rpm_lmac_enadis_rx_pause_fwding(void *rpmd, int lmac_id, bool enable);
+int rpm_lmac_get_pause_frm_status(void *cgxd, int lmac_id, u8 *tx_pause,
+ u8 *rx_pause);
+void rpm_lmac_pause_frm_config(void *rpmd, int lmac_id, bool enable);
+int rpm_lmac_enadis_pause_frm(void *rpmd, int lmac_id, u8 tx_pause,
+ u8 rx_pause);
int rpm_get_nr_lmacs(void *cgxd);
#endif /* RPM_H */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
index 5e514f27a22d..1c980c8a13ee 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
@@ -406,6 +406,7 @@ static bool is_cgx_config_permitted(struct rvu *rvu, u16 pcifunc)
void rvu_cgx_enadis_rx_bp(struct rvu *rvu, int pf, bool enable)
{
+ struct mac_ops *mac_ops;
u8 cgx_id, lmac_id;
void *cgxd;
@@ -415,11 +416,12 @@ void rvu_cgx_enadis_rx_bp(struct rvu *rvu, int pf, bool enable)
rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
cgxd = rvu_cgx_pdata(cgx_id, rvu);
+ mac_ops = get_mac_ops(cgxd);
/* Set / clear CTL_BCK to control pause frame forwarding to NIX */
if (enable)
- cgx_lmac_enadis_rx_pause_fwding(cgxd, lmac_id, true);
+ mac_ops->mac_enadis_rx_pause_fwding(cgxd, lmac_id, true);
else
- cgx_lmac_enadis_rx_pause_fwding(cgxd, lmac_id, false);
+ mac_ops->mac_enadis_rx_pause_fwding(cgxd, lmac_id, false);
}
int rvu_cgx_config_rxtx(struct rvu *rvu, u16 pcifunc, bool start)
@@ -715,7 +717,9 @@ int rvu_mbox_handler_cgx_cfg_pause_frm(struct rvu *rvu,
struct cgx_pause_frm_cfg *rsp)
{
int pf = rvu_get_pf(req->hdr.pcifunc);
+ struct mac_ops *mac_ops;
u8 cgx_id, lmac_id;
+ void *cgxd;
if (!is_mac_feature_supported(rvu, pf, RVU_LMAC_FEAT_FC))
return 0;
@@ -727,13 +731,16 @@ int rvu_mbox_handler_cgx_cfg_pause_frm(struct rvu *rvu,
return -ENODEV;
rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+ cgxd = rvu_cgx_pdata(cgx_id, rvu);
+ mac_ops = get_mac_ops(cgxd);
if (req->set)
- cgx_lmac_set_pause_frm(rvu_cgx_pdata(cgx_id, rvu), lmac_id,
- req->tx_pause, req->rx_pause);
+ mac_ops->mac_enadis_pause_frm(cgxd, lmac_id,
+ req->tx_pause, req->rx_pause);
else
- cgx_lmac_get_pause_frm(rvu_cgx_pdata(cgx_id, rvu), lmac_id,
- &rsp->tx_pause, &rsp->rx_pause);
+ mac_ops->mac_get_pause_frm_status(cgxd, lmac_id,
+ &rsp->tx_pause,
+ &rsp->rx_pause);
return 0;
}
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index ee27dddeff59..d3000194e2d3 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -16,6 +16,7 @@
#include "rvu.h"
#include "npc.h"
#include "cgx.h"
+#include "lmac_common.h"
static void nix_free_tx_vtag_entries(struct rvu *rvu, u16 pcifunc);
static int rvu_nix_get_bpid(struct rvu *rvu, struct nix_bp_cfg_req *req,
@@ -214,6 +215,7 @@ static bool is_valid_txschq(struct rvu *rvu, int blkaddr,
static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf)
{
struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
+ struct mac_ops *mac_ops;
int pkind, pf, vf, lbkid;
u8 cgx_id, lmac_id;
int err;
@@ -240,10 +242,12 @@ static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf)
cgx_set_pkind(rvu_cgx_pdata(cgx_id, rvu), lmac_id, pkind);
rvu_npc_set_pkind(rvu, pkind, pfvf);
+ mac_ops = get_mac_ops(rvu_cgx_pdata(cgx_id, rvu));
/* By default we enable pause frames */
if ((pcifunc & RVU_PFVF_FUNC_MASK) == 0)
- cgx_lmac_set_pause_frm(rvu_cgx_pdata(cgx_id, rvu),
- lmac_id, true, true);
+ mac_ops->mac_enadis_pause_frm(rvu_cgx_pdata(cgx_id,
+ rvu),
+ lmac_id, true, true);
break;
case NIX_INTF_TYPE_LBK:
vf = (pcifunc & RVU_PFVF_FUNC_MASK) - 1;
--
2.17.1
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