[PATCH v3 net-next 4/9] net: enetc: add "Update" operation to the egress count table
From: <hidden>
Date: 2026-06-05 01:45:37
Also in:
imx, linux-arm-kernel, lkml, netdev
Subsystem:
freescale enetc ethernet drivers, freescale soc drivers, networking drivers, the rest · Maintainers:
Claudiu Manoil, Vladimir Oltean, Wei Fang, Clark Wang, Christophe Leroy, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Wei Fang <wei.fang@nxp.com> The egress count table is a static bounded index table, egress related statistics are maintained in this table. The table is implemented as a linear array of entries accessed using an index (0, 1, 2, ..., n) that uniquely identifies an entry within the array. Egress Counter Entry ID (EC_EID) is used as an index to an entry in this table. The EC_EID is specified in the egress treatment table. Egress count table entries are always present and enabled. The table only supports access via entry ID, which is assigned by the software. And it supports Update, Query and Query followed by Update operations. Currently, only Update operation is supported. Signed-off-by: Wei Fang <wei.fang@nxp.com> --- drivers/net/ethernet/freescale/enetc/ntmp.c | 45 +++++++++++++++++++++ include/linux/fsl/ntmp.h | 2 + 2 files changed, 47 insertions(+)
diff --git a/drivers/net/ethernet/freescale/enetc/ntmp.c b/drivers/net/ethernet/freescale/enetc/ntmp.c
index 9249f78219ed..601435966ed1 100644
--- a/drivers/net/ethernet/freescale/enetc/ntmp.c
+++ b/drivers/net/ethernet/freescale/enetc/ntmp.c@@ -25,6 +25,7 @@ #define NTMP_FDBT_ID 15 #define NTMP_VFT_ID 18 #define NTMP_ETT_ID 33 +#define NTMP_ECT_ID 39 #define NTMP_BPT_ID 41 /* Generic Update Actions for most tables */
@@ -33,6 +34,7 @@ /* Specific Update Actions for some tables */ #define FDBT_UA_ACTEU BIT(1) +#define ECT_UA_STSEU BIT(0) #define BPT_UA_BPSEU BIT(1) /* Query Action: 0: Full query. 1: Query entry ID, the fields after entry
@@ -287,6 +289,8 @@ static const char *ntmp_table_name(int tbl_id) return "VLAN Filter Table"; case NTMP_ETT_ID: return "Egress Treatment Table"; + case NTMP_ECT_ID: + return "Egress Count Table"; case NTMP_BPT_ID: return "Buffer Pool Table"; default:
@@ -1197,6 +1201,47 @@ int ntmp_ett_delete_entry(struct ntmp_user *user, u32 entry_id) } EXPORT_SYMBOL_GPL(ntmp_ett_delete_entry); +/** + * ntmp_ect_update_entry - reset the statistics element data of the + * specified egress counter table entry + * @user: target ntmp_user struct + * @entry_id: entry ID + * + * Return: 0 on success, otherwise a negative error code + */ +int ntmp_ect_update_entry(struct ntmp_user *user, u32 entry_id) +{ + struct ntmp_req_by_eid *req; + struct netc_swcbd swcbd; + struct netc_cbdr *cbdr; + union netc_cbd cbd; + int err; + + swcbd.size = sizeof(*req); + err = ntmp_alloc_data_mem(user->dev, &swcbd, (void **)&req); + if (err) + return err; + + /* Request data */ + ntmp_fill_crd_eid(req, user->tbl.ect_ver, 0, ECT_UA_STSEU, entry_id); + + /* Request header */ + ntmp_fill_request_hdr(&cbd, swcbd.dma, NTMP_LEN(swcbd.size, 0), + NTMP_ECT_ID, NTMP_CMD_UPDATE, NTMP_AM_ENTRY_ID); + + ntmp_select_and_lock_cbdr(user, &cbdr); + err = netc_xmit_ntmp_cmd(cbdr, &cbd, &swcbd); + if (err) + dev_err(user->dev, + "Failed to update %s entry 0x%x, err: %pe\n", + ntmp_table_name(NTMP_ECT_ID), entry_id, ERR_PTR(err)); + + ntmp_unlock_cbdr(cbdr); + + return err; +} +EXPORT_SYMBOL_GPL(ntmp_ect_update_entry); + int ntmp_bpt_update_entry(struct ntmp_user *user, u32 entry_id, const struct bpt_cfge_data *cfge) {
diff --git a/include/linux/fsl/ntmp.h b/include/linux/fsl/ntmp.h
index 0c951e1c763d..1222901f48a7 100644
--- a/include/linux/fsl/ntmp.h
+++ b/include/linux/fsl/ntmp.h@@ -37,6 +37,7 @@ struct netc_tbl_vers { u8 bpt_ver; u8 ipft_ver; u8 ett_ver; + u8 ect_ver; }; struct netc_swcbd {
@@ -294,6 +295,7 @@ int ntmp_ett_add_entry(struct ntmp_user *user, u32 entry_id, int ntmp_ett_update_entry(struct ntmp_user *user, u32 entry_id, const struct ett_cfge_data *cfge); int ntmp_ett_delete_entry(struct ntmp_user *user, u32 entry_id); +int ntmp_ect_update_entry(struct ntmp_user *user, u32 entry_id); int ntmp_bpt_update_entry(struct ntmp_user *user, u32 entry_id, const struct bpt_cfge_data *cfge); #else
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2.34.1