[PATCH v6 2/7] net/ixgbe: add vector stubs for LoongArch

[Min Zhou <zhoumin@loongson.cn>]

Similar to RISC-V, the current version for LoongArch do not support
vector. Re-use vector processing stubs in ixgbe PMD defined for PPC
for LoongArch. This enables ixgbe PMD usage in scalar mode on
LoongArch.

The ixgbe PMD driver was validated with Intel X520-DA2 NIC and the
test-pmd application, l2fwd, l3fwd examples.

Signed-off-by: Min Zhou <zhoumin@loongson.cn>
---
 doc/guides/nics/features/ixgbe.ini | 1 +
 drivers/net/ixgbe/ixgbe_rxtx.c     | 7 +++++--
 drivers/net/ixgbe/meson.build      | 6 ------
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/doc/guides/nics/features/ixgbe.ini b/doc/guides/nics/features/ixgbe.ini
index ab759a6fb3..97c0a6af9e 100644
--- a/doc/guides/nics/features/ixgbe.ini
+++ b/doc/guides/nics/features/ixgbe.ini
@@ -52,6 +52,7 @@ FreeBSD              = Y
 Linux                = Y
 Windows              = Y
 ARMv8                = Y
+LoongArch64          = Y
 rv64                 = Y
 x86-32               = Y
 x86-64               = Y
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 009d9b624a..c9d6ca9efe 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -5957,8 +5957,11 @@ ixgbe_config_rss_filter(struct rte_eth_dev *dev,
 	return 0;
 }
 
-/* Stubs needed for linkage when RTE_ARCH_PPC_64 or RTE_ARCH_RISCV is set */
-#if defined(RTE_ARCH_PPC_64) || defined(RTE_ARCH_RISCV)
+/* Stubs needed for linkage when RTE_ARCH_PPC_64, RTE_ARCH_RISCV or
+ * RTE_ARCH_LOONGARCH is set.
+ */
+#if defined(RTE_ARCH_PPC_64) || defined(RTE_ARCH_RISCV) || \
+	defined(RTE_ARCH_LOONGARCH)
 int
 ixgbe_rx_vec_dev_conf_condition_check(struct rte_eth_dev __rte_unused *dev)
 {
diff --git a/drivers/net/ixgbe/meson.build b/drivers/net/ixgbe/meson.build
index 3282a826ca..162f8d5f46 100644
--- a/drivers/net/ixgbe/meson.build
+++ b/drivers/net/ixgbe/meson.build
@@ -1,12 +1,6 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright(c) 2017 Intel Corporation
 
-if arch_subdir == 'loongarch'
-    build = false
-    reason = 'not supported on LoongArch'
-    subdir_done()
-endif
-
 cflags += ['-DRTE_LIBRTE_IXGBE_BYPASS']
 
 subdir('base')
-- 
2.32.1 (Apple Git-133)