net: libwx: move rss_field to struct wx

For global RSS and multiple RSS scheme, the RSS type fields are defined
identically in the registers. So they can be defined as the macros
WX_RSS_FIELD_* to cleanup the codes. And to prepare for the RXFH support
in the next patch, move the rss_field to struct wx.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://patch.msgid.link/20250926023843.34340-3-jiawenwu@trustnetic.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: Jiawen Wu

drivers/net/ethernet/wangxun/libwx/wx_hw.c

@@ -2078,16 +2078,11 @@ void wx_config_rss_field(struct wx *wx)
 {
 	u32 rss_field;
 
-	/* Global RSS and multiple RSS have the same type field */
-	rss_field = WX_RDB_RA_CTL_RSS_IPV4 |
-		    WX_RDB_RA_CTL_RSS_IPV4_TCP |
-		    WX_RDB_RA_CTL_RSS_IPV4_UDP |
-		    WX_RDB_RA_CTL_RSS_IPV6 |
-		    WX_RDB_RA_CTL_RSS_IPV6_TCP |
-		    WX_RDB_RA_CTL_RSS_IPV6_UDP;
-
 	if (test_bit(WX_FLAG_SRIOV_ENABLED, wx->flags) &&
 	    test_bit(WX_FLAG_MULTI_64_FUNC, wx->flags)) {
+		rss_field = rd32(wx, WX_RDB_PL_CFG(wx->num_vfs));
+		rss_field &= ~WX_RDB_PL_CFG_RSS_MASK;
+		rss_field |= FIELD_PREP(WX_RDB_PL_CFG_RSS_MASK, wx->rss_flags);
 		wr32(wx, WX_RDB_PL_CFG(wx->num_vfs), rss_field);
 
 		/* Enable global RSS and multiple RSS to make the RSS
@@ -2097,6 +2092,9 @@ void wx_config_rss_field(struct wx *wx)
 		      WX_RDB_RA_CTL_MULTI_RSS | WX_RDB_RA_CTL_RSS_EN,
 		      WX_RDB_RA_CTL_MULTI_RSS | WX_RDB_RA_CTL_RSS_EN);
 	} else {
+		rss_field = rd32(wx, WX_RDB_RA_CTL);
+		rss_field &= ~WX_RDB_RA_CTL_RSS_MASK;
+		rss_field |= FIELD_PREP(WX_RDB_RA_CTL_RSS_MASK, wx->rss_flags);
 		wr32(wx, WX_RDB_RA_CTL, rss_field);
 	}
 }
@@ -2450,6 +2448,9 @@ int wx_sw_init(struct wx *wx)
 		wx_err(wx, "rss key allocation failed\n");
 		return err;
 	}
+	wx->rss_flags = WX_RSS_FIELD_IPV4 | WX_RSS_FIELD_IPV4_TCP |
+			WX_RSS_FIELD_IPV6 | WX_RSS_FIELD_IPV6_TCP |
+			WX_RSS_FIELD_IPV4_UDP | WX_RSS_FIELD_IPV6_UDP;
 
 	wx->mac_table = kcalloc(wx->mac.num_rar_entries,
 				sizeof(struct wx_mac_addr),

drivers/net/ethernet/wangxun/libwx/wx_type.h

@@ -169,6 +169,7 @@
 #define WX_RDB_PL_CFG_TUN_TUNHDR     BIT(4)
 #define WX_RDB_PL_CFG_TUN_OUTL2HDR   BIT(5)
 #define WX_RDB_PL_CFG_RSS_EN         BIT(24)
+#define WX_RDB_PL_CFG_RSS_MASK       GENMASK(23, 16)
 #define WX_RDB_RSSTBL(_i)            (0x19400 + ((_i) * 4))
 #define WX_RDB_RSSRK(_i)             (0x19480 + ((_i) * 4))
 #define WX_RDB_RA_CTL                0x194F4
@@ -180,6 +181,7 @@
 #define WX_RDB_RA_CTL_RSS_IPV6_TCP   BIT(21)
 #define WX_RDB_RA_CTL_RSS_IPV4_UDP   BIT(22)
 #define WX_RDB_RA_CTL_RSS_IPV6_UDP   BIT(23)
+#define WX_RDB_RA_CTL_RSS_MASK       GENMASK(23, 16)
 #define WX_RDB_FDIR_MATCH            0x19558
 #define WX_RDB_FDIR_MISS             0x1955C
 /* VM RSS */
@@ -1197,6 +1199,15 @@ struct vf_macvlans {
 	u8 vf_macvlan[ETH_ALEN];
 };
 
+#define WX_RSS_FIELD_IPV4_TCP      BIT(0)
+#define WX_RSS_FIELD_IPV4          BIT(1)
+#define WX_RSS_FIELD_IPV4_SCTP     BIT(2)
+#define WX_RSS_FIELD_IPV6_SCTP     BIT(3)
+#define WX_RSS_FIELD_IPV6_TCP      BIT(4)
+#define WX_RSS_FIELD_IPV6          BIT(5)
+#define WX_RSS_FIELD_IPV4_UDP      BIT(6)
+#define WX_RSS_FIELD_IPV6_UDP      BIT(7)
+
 enum wx_pf_flags {
 	WX_FLAG_MULTI_64_FUNC,
 	WX_FLAG_SWFW_RING,
@@ -1307,6 +1318,7 @@ struct wx {
 #define WX_MAX_RETA_ENTRIES 128
 #define WX_RSS_INDIR_TBL_MAX 64
 	u8 rss_indir_tbl[WX_MAX_RETA_ENTRIES];
+	u8 rss_flags;
 	bool rss_enabled;
 #define WX_RSS_KEY_SIZE     40  /* size of RSS Hash Key in bytes */
 	u32 *rss_key;