[PATCH v7 5/7] examples/l3fwd: enable LoongArch operation

[Min Zhou <zhoumin@loongson.cn>]

Add missing em_mask_key() implementation to enable the l3fwd to be
run on LoongArch.

Signed-off-by: Min Zhou <zhoumin@loongson.cn>
---
 examples/l3fwd/l3fwd_em.c  | 8 ++++++++
 examples/l3fwd/meson.build | 6 ------
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/examples/l3fwd/l3fwd_em.c b/examples/l3fwd/l3fwd_em.c
index 0531282a1f..a203dc9e46 100644
--- a/examples/l3fwd/l3fwd_em.c
+++ b/examples/l3fwd/l3fwd_em.c
@@ -247,6 +247,14 @@ em_mask_key(void *key, xmm_t mask)
 
 	return vect_and(data, mask);
 }
+#elif defined(RTE_ARCH_LOONGARCH)
+static inline xmm_t
+em_mask_key(void *key, xmm_t mask)
+{
+	xmm_t data = vect_load_128(key);
+
+	return vect_and(data, mask);
+}
 #else
 #error No vector engine (SSE, NEON, ALTIVEC) available, check your toolchain
 #endif
diff --git a/examples/l3fwd/meson.build b/examples/l3fwd/meson.build
index d2f2d96099..b40244a941 100644
--- a/examples/l3fwd/meson.build
+++ b/examples/l3fwd/meson.build
@@ -6,12 +6,6 @@
 # To build this example as a standalone application with an already-installed
 # DPDK instance, use 'make'
 
-if arch_subdir == 'loongarch'
-    build = false
-    reason = 'not supported on LoongArch'
-    subdir_done()
-endif
-
 allow_experimental_apis = true
 deps += ['acl', 'hash', 'lpm', 'fib', 'eventdev']
 sources = files(
-- 
2.31.1