mbuf: add function to generate raw Tx offload value

[dpdk.git] / app / test / test_mbuf.c

diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
index 9e82a20..030385e 100644 (file)
--- a/app/test/test_mbuf.c
+++ b/app/test/test_mbuf.c
@@ -27,6 +27,7 @@
 #include <rte_mbuf.h>
 #include <rte_random.h>
 #include <rte_cycles.h>
+#include <rte_malloc.h>
 
 #include "test.h"
 
@@ -1028,6 +1029,99 @@ test_mbuf_linearize_check(struct rte_mempool *pktmbuf_pool)
        return 0;
 }
 
+/*
+ * Helper function for test_tx_ofload
+ */
+static inline void
+set_tx_offload(struct rte_mbuf *mb, uint64_t il2, uint64_t il3, uint64_t il4,
+       uint64_t tso, uint64_t ol3, uint64_t ol2)
+{
+       mb->l2_len = il2;
+       mb->l3_len = il3;
+       mb->l4_len = il4;
+       mb->tso_segsz = tso;
+       mb->outer_l3_len = ol3;
+       mb->outer_l2_len = ol2;
+}
+
+static int
+test_tx_offload(void)
+{
+       struct rte_mbuf *mb;
+       uint64_t tm, v1, v2;
+       size_t sz;
+       uint32_t i;
+
+       static volatile struct {
+               uint16_t l2;
+               uint16_t l3;
+               uint16_t l4;
+               uint16_t tso;
+       } txof;
+
+       const uint32_t num = 0x10000;
+
+       txof.l2 = rte_rand() % (1 <<  RTE_MBUF_L2_LEN_BITS);
+       txof.l3 = rte_rand() % (1 <<  RTE_MBUF_L3_LEN_BITS);
+       txof.l4 = rte_rand() % (1 <<  RTE_MBUF_L4_LEN_BITS);
+       txof.tso = rte_rand() % (1 <<   RTE_MBUF_TSO_SEGSZ_BITS);
+
+       printf("%s started, tx_offload = {\n"
+               "\tl2_len=%#hx,\n"
+               "\tl3_len=%#hx,\n"
+               "\tl4_len=%#hx,\n"
+               "\ttso_segsz=%#hx,\n"
+               "\touter_l3_len=%#x,\n"
+               "\touter_l2_len=%#x,\n"
+               "};\n",
+               __func__,
+               txof.l2, txof.l3, txof.l4, txof.tso, txof.l3, txof.l2);
+
+       sz = sizeof(*mb) * num;
+       mb = rte_zmalloc(NULL, sz, RTE_CACHE_LINE_SIZE);
+       if (mb == NULL) {
+               printf("%s failed, out of memory\n", __func__);
+               return -ENOMEM;
+       }
+
+       memset(mb, 0, sz);
+       tm = rte_rdtsc_precise();
+
+       for (i = 0; i != num; i++)
+               set_tx_offload(mb + i, txof.l2, txof.l3, txof.l4,
+                       txof.tso, txof.l3, txof.l2);
+
+       tm = rte_rdtsc_precise() - tm;
+       printf("%s set tx_offload by bit-fields: %u iterations, %"
+               PRIu64 " cycles, %#Lf cycles/iter\n",
+               __func__, num, tm, (long double)tm / num);
+
+       v1 = mb[rte_rand() % num].tx_offload;
+
+       memset(mb, 0, sz);
+       tm = rte_rdtsc_precise();
+
+       for (i = 0; i != num; i++)
+               mb[i].tx_offload = rte_mbuf_tx_offload(txof.l2, txof.l3,
+                       txof.l4, txof.tso, txof.l3, txof.l2, 0);
+
+       tm = rte_rdtsc_precise() - tm;
+       printf("%s set raw tx_offload: %u iterations, %"
+               PRIu64 " cycles, %#Lf cycles/iter\n",
+               __func__, num, tm, (long double)tm / num);
+
+       v2 = mb[rte_rand() % num].tx_offload;
+
+       rte_free(mb);
+
+       printf("%s finished\n"
+               "expected tx_offload value: 0x%" PRIx64 ";\n"
+               "rte_mbuf_tx_offload value: 0x%" PRIx64 ";\n",
+               __func__, v1, v2);
+
+       return (v1 == v2) ? 0 : -EINVAL;
+}
+
 static int
 test_mbuf(void)
 {
@@ -1126,8 +1220,13 @@ test_mbuf(void)
                printf("test_mbuf_linearize_check() failed\n");
                goto err;
        }
-       ret = 0;
 
+       if (test_tx_offload() < 0) {
+               printf("test_tx_offload() failed\n");
+               goto err;
+       }
+
+       ret = 0;
 err:
        rte_mempool_free(pktmbuf_pool);
        rte_mempool_free(pktmbuf_pool2);