net: stmmac: xgmac: Remove uneeded computation for RFA/RFD

[linux-2.6-microblaze.git] / lib / test_bpf.c

diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 5ef3ecc..cecb230 100644 (file)
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -6859,34 +6859,128 @@ err_page0:
        return NULL;
 }
 
-static __init int test_skb_segment(void)
+static __init struct sk_buff *build_test_skb_linear_no_head_frag(void)
 {
+       unsigned int alloc_size = 2000;
+       unsigned int headroom = 102, doffset = 72, data_size = 1308;
+       struct sk_buff *skb[2];
+       int i;
+
+       /* skbs linked in a frag_list, both with linear data, with head_frag=0
+        * (data allocated by kmalloc), both have tcp data of 1308 bytes
+        * (total payload is 2616 bytes).
+        * Data offset is 72 bytes (40 ipv6 hdr, 32 tcp hdr). Some headroom.
+        */
+       for (i = 0; i < 2; i++) {
+               skb[i] = alloc_skb(alloc_size, GFP_KERNEL);
+               if (!skb[i]) {
+                       if (i == 0)
+                               goto err_skb0;
+                       else
+                               goto err_skb1;
+               }
+
+               skb[i]->protocol = htons(ETH_P_IPV6);
+               skb_reserve(skb[i], headroom);
+               skb_put(skb[i], doffset + data_size);
+               skb_reset_network_header(skb[i]);
+               if (i == 0)
+                       skb_reset_mac_header(skb[i]);
+               else
+                       skb_set_mac_header(skb[i], -ETH_HLEN);
+               __skb_pull(skb[i], doffset);
+       }
+
+       /* setup shinfo.
+        * mimic bpf_skb_proto_4_to_6, which resets gso_segs and assigns a
+        * reduced gso_size.
+        */
+       skb_shinfo(skb[0])->gso_size = 1288;
+       skb_shinfo(skb[0])->gso_type = SKB_GSO_TCPV6 | SKB_GSO_DODGY;
+       skb_shinfo(skb[0])->gso_segs = 0;
+       skb_shinfo(skb[0])->frag_list = skb[1];
+
+       /* adjust skb[0]'s len */
+       skb[0]->len += skb[1]->len;
+       skb[0]->data_len += skb[1]->len;
+       skb[0]->truesize += skb[1]->truesize;
+
+       return skb[0];
+
+err_skb1:
+       kfree_skb(skb[0]);
+err_skb0:
+       return NULL;
+}
+
+struct skb_segment_test {
+       const char *descr;
+       struct sk_buff *(*build_skb)(void);
        netdev_features_t features;
+};
+
+static struct skb_segment_test skb_segment_tests[] __initconst = {
+       {
+               .descr = "gso_with_rx_frags",
+               .build_skb = build_test_skb,
+               .features = NETIF_F_SG | NETIF_F_GSO_PARTIAL | NETIF_F_IP_CSUM |
+                           NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM
+       },
+       {
+               .descr = "gso_linear_no_head_frag",
+               .build_skb = build_test_skb_linear_no_head_frag,
+               .features = NETIF_F_SG | NETIF_F_FRAGLIST |
+                           NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_GSO |
+                           NETIF_F_LLTX_BIT | NETIF_F_GRO |
+                           NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
+                           NETIF_F_HW_VLAN_STAG_TX_BIT
+       }
+};
+
+static __init int test_skb_segment_single(const struct skb_segment_test *test)
+{
        struct sk_buff *skb, *segs;
        int ret = -1;
 
-       features = NETIF_F_SG | NETIF_F_GSO_PARTIAL | NETIF_F_IP_CSUM |
-                  NETIF_F_IPV6_CSUM;
-       features |= NETIF_F_RXCSUM;
-       skb = build_test_skb();
+       skb = test->build_skb();
        if (!skb) {
                pr_info("%s: failed to build_test_skb", __func__);
                goto done;
        }
 
-       segs = skb_segment(skb, features);
+       segs = skb_segment(skb, test->features);
        if (!IS_ERR(segs)) {
                kfree_skb_list(segs);
                ret = 0;
-               pr_info("%s: success in skb_segment!", __func__);
-       } else {
-               pr_info("%s: failed in skb_segment!", __func__);
        }
        kfree_skb(skb);
 done:
        return ret;
 }
 
+static __init int test_skb_segment(void)
+{
+       int i, err_cnt = 0, pass_cnt = 0;
+
+       for (i = 0; i < ARRAY_SIZE(skb_segment_tests); i++) {
+               const struct skb_segment_test *test = &skb_segment_tests[i];
+
+               pr_info("#%d %s ", i, test->descr);
+
+               if (test_skb_segment_single(test)) {
+                       pr_cont("FAIL\n");
+                       err_cnt++;
+               } else {
+                       pr_cont("PASS\n");
+                       pass_cnt++;
+               }
+       }
+
+       pr_info("%s: Summary: %d PASSED, %d FAILED\n", __func__,
+               pass_cnt, err_cnt);
+       return err_cnt ? -EINVAL : 0;
+}
+
 static __init int test_bpf(void)
 {
        int i, err_cnt = 0, pass_cnt = 0;