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Message-ID: <20240809173615.2031516-9-anthony.l.nguyen@intel.com>
Date: Fri, 9 Aug 2024 10:36:07 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
kuba@...nel.org,
pabeni@...hat.com,
edumazet@...gle.com,
netdev@...r.kernel.org
Cc: Junfeng Guo <junfeng.guo@...el.com>,
anthony.l.nguyen@...el.com,
ahmed.zaki@...el.com,
madhu.chittim@...el.com,
horms@...nel.org,
hkelam@...vell.com,
Marcin Szycik <marcin.szycik@...ux.intel.com>,
Qi Zhang <qi.z.zhang@...el.com>,
Rafal Romanowski <rafal.romanowski@...el.com>
Subject: [PATCH net-next 08/13] ice: add API for parser profile initialization
From: Junfeng Guo <junfeng.guo@...el.com>
Add API ice_parser_profile_init() to init a parser profile based on
a parser result and a mask buffer. The ice_parser_profile struct is used
by the low level FXP engine to create HW profile/field vectors.
Reviewed-by: Marcin Szycik <marcin.szycik@...ux.intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@...el.com>
Signed-off-by: Junfeng Guo <junfeng.guo@...el.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@...el.com>
Tested-by: Rafal Romanowski <rafal.romanowski@...el.com>
Reviewed-by: Simon Horman <horms@...nel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
drivers/net/ethernet/intel/ice/ice_parser.c | 130 +++++++++++++++++++-
drivers/net/ethernet/intel/ice/ice_parser.h | 26 ++++
2 files changed, 154 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_parser.c b/drivers/net/ethernet/intel/ice/ice_parser.c
index ee89208bf21d..89030c1d4a67 100644
--- a/drivers/net/ethernet/intel/ice/ice_parser.c
+++ b/drivers/net/ethernet/intel/ice/ice_parser.c
@@ -2243,9 +2243,9 @@ static int ice_tunnel_port_set(struct ice_parser *psr, enum ice_lbl_type type,
/* found a matched slot to delete */
} else if (!on &&
(item->key_inv[ICE_BT_TUN_PORT_OFF_L] ==
- buf[ICE_UDP_PORT_OFF_L] ||
+ buf[ICE_UDP_PORT_OFF_L] ||
item->key_inv[ICE_BT_TUN_PORT_OFF_H] ==
- buf[ICE_UDP_PORT_OFF_H])) {
+ buf[ICE_UDP_PORT_OFF_H])) {
item->key_inv[ICE_BT_TUN_PORT_OFF_L] = ICE_BT_VLD_KEY;
item->key_inv[ICE_BT_TUN_PORT_OFF_H] = ICE_BT_INV_KEY;
@@ -2302,3 +2302,129 @@ int ice_parser_ecpri_tunnel_set(struct ice_parser *psr,
return ice_tunnel_port_set(psr, ICE_LBL_BST_TYPE_UDP_ECPRI,
udp_port, on);
}
+
+/**
+ * ice_nearest_proto_id
+ * @rslt: pointer to a parser result instance
+ * @offset: a min value for the protocol offset
+ * @proto_id: the protocol ID (output)
+ * @proto_off: the protocol offset (output)
+ *
+ * From the protocols in @rslt, find the nearest protocol that has offset
+ * larger than @offset.
+ *
+ * Return: if true, the protocol's ID and offset
+ */
+static bool ice_nearest_proto_id(struct ice_parser_result *rslt, u16 offset,
+ u8 *proto_id, u16 *proto_off)
+{
+ u16 dist = U16_MAX;
+ u8 proto = 0;
+ int i;
+
+ for (i = 0; i < rslt->po_num; i++) {
+ if (offset < rslt->po[i].offset)
+ continue;
+ if (offset - rslt->po[i].offset < dist) {
+ proto = rslt->po[i].proto_id;
+ dist = offset - rslt->po[i].offset;
+ }
+ }
+
+ if (dist % 2)
+ return false;
+
+ *proto_id = proto;
+ *proto_off = dist;
+
+ return true;
+}
+
+/* default flag mask to cover GTP_EH_PDU, GTP_EH_PDU_LINK and TUN2
+ * In future, the flag masks should learn from DDP
+ */
+#define ICE_KEYBUILD_FLAG_MASK_DEFAULT_SW 0x4002
+#define ICE_KEYBUILD_FLAG_MASK_DEFAULT_ACL 0x0000
+#define ICE_KEYBUILD_FLAG_MASK_DEFAULT_FD 0x6080
+#define ICE_KEYBUILD_FLAG_MASK_DEFAULT_RSS 0x6010
+
+/**
+ * ice_parser_profile_init - initialize a FXP profile based on parser result
+ * @rslt: a instance of a parser result
+ * @pkt_buf: packet data buffer
+ * @msk_buf: packet mask buffer
+ * @buf_len: packet length
+ * @blk: FXP pipeline stage
+ * @prof: input/output parameter to save the profile
+ *
+ * Return: 0 on success or errno on failure.
+ */
+int ice_parser_profile_init(struct ice_parser_result *rslt,
+ const u8 *pkt_buf, const u8 *msk_buf,
+ int buf_len, enum ice_block blk,
+ struct ice_parser_profile *prof)
+{
+ u8 proto_id = U8_MAX;
+ u16 proto_off = 0;
+ u16 off;
+
+ memset(prof, 0, sizeof(*prof));
+ set_bit(rslt->ptype, prof->ptypes);
+ if (blk == ICE_BLK_SW) {
+ prof->flags = rslt->flags_sw;
+ prof->flags_msk = ICE_KEYBUILD_FLAG_MASK_DEFAULT_SW;
+ } else if (blk == ICE_BLK_ACL) {
+ prof->flags = rslt->flags_acl;
+ prof->flags_msk = ICE_KEYBUILD_FLAG_MASK_DEFAULT_ACL;
+ } else if (blk == ICE_BLK_FD) {
+ prof->flags = rslt->flags_fd;
+ prof->flags_msk = ICE_KEYBUILD_FLAG_MASK_DEFAULT_FD;
+ } else if (blk == ICE_BLK_RSS) {
+ prof->flags = rslt->flags_rss;
+ prof->flags_msk = ICE_KEYBUILD_FLAG_MASK_DEFAULT_RSS;
+ } else {
+ return -EINVAL;
+ }
+
+ for (off = 0; off < buf_len - 1; off++) {
+ if (msk_buf[off] == 0 && msk_buf[off + 1] == 0)
+ continue;
+ if (!ice_nearest_proto_id(rslt, off, &proto_id, &proto_off))
+ continue;
+ if (prof->fv_num >= ICE_PARSER_FV_MAX)
+ return -EINVAL;
+
+ prof->fv[prof->fv_num].proto_id = proto_id;
+ prof->fv[prof->fv_num].offset = proto_off;
+ prof->fv[prof->fv_num].spec = *(const u16 *)&pkt_buf[off];
+ prof->fv[prof->fv_num].msk = *(const u16 *)&msk_buf[off];
+ prof->fv_num++;
+ }
+
+ return 0;
+}
+
+/**
+ * ice_parser_profile_dump - dump an FXP profile info
+ * @hw: pointer to the hardware structure
+ * @prof: profile info to dump
+ */
+void ice_parser_profile_dump(struct ice_hw *hw,
+ struct ice_parser_profile *prof)
+{
+ struct device *dev = ice_hw_to_dev(hw);
+ u16 i;
+
+ dev_info(dev, "ptypes:\n");
+ for (i = 0; i < ICE_FLOW_PTYPE_MAX; i++)
+ if (test_bit(i, prof->ptypes))
+ dev_info(dev, "\t%u\n", i);
+
+ for (i = 0; i < prof->fv_num; i++)
+ dev_info(dev, "proto = %u, offset = %2u, spec = 0x%04x, mask = 0x%04x\n",
+ prof->fv[i].proto_id, prof->fv[i].offset,
+ prof->fv[i].spec, prof->fv[i].msk);
+
+ dev_info(dev, "flags = 0x%04x\n", prof->flags);
+ dev_info(dev, "flags_msk = 0x%04x\n", prof->flags_msk);
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_parser.h b/drivers/net/ethernet/intel/ice/ice_parser.h
index f9500ddf1567..6509d807627c 100644
--- a/drivers/net/ethernet/intel/ice/ice_parser.h
+++ b/drivers/net/ethernet/intel/ice/ice_parser.h
@@ -451,6 +451,8 @@ struct ice_parser_proto_off {
#define ICE_PARSER_PROTO_OFF_PAIR_SIZE 16
#define ICE_PARSER_FLAG_PSR_SIZE 8
+#define ICE_PARSER_FV_SIZE 48
+#define ICE_PARSER_FV_MAX 24
#define ICE_BT_TUN_PORT_OFF_H 16
#define ICE_BT_TUN_PORT_OFF_L 15
#define ICE_BT_VM_OFF 0
@@ -511,4 +513,28 @@ int ice_parser_ecpri_tunnel_set(struct ice_parser *psr, u16 udp_port, bool on);
int ice_parser_run(struct ice_parser *psr, const u8 *pkt_buf,
int pkt_len, struct ice_parser_result *rslt);
void ice_parser_result_dump(struct ice_hw *hw, struct ice_parser_result *rslt);
+
+struct ice_parser_fv {
+ u8 proto_id; /* hardware protocol ID */
+ u16 offset; /* offset from the start of the protocol header */
+ u16 spec; /* pattern to match */
+ u16 msk; /* pattern mask */
+};
+
+struct ice_parser_profile {
+ /* array of field vectors */
+ struct ice_parser_fv fv[ICE_PARSER_FV_SIZE];
+ int fv_num; /* # of field vectors must <= 48 */
+ u16 flags; /* key builder flags */
+ u16 flags_msk; /* key builder flag mask */
+
+ DECLARE_BITMAP(ptypes, ICE_FLOW_PTYPE_MAX); /* PTYPE bitmap */
+};
+
+int ice_parser_profile_init(struct ice_parser_result *rslt,
+ const u8 *pkt_buf, const u8 *msk_buf,
+ int buf_len, enum ice_block blk,
+ struct ice_parser_profile *prof);
+void ice_parser_profile_dump(struct ice_hw *hw,
+ struct ice_parser_profile *prof);
#endif /* _ICE_PARSER_H_ */
--
2.42.0
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