remove experimental tags from all symbol definitions

[dpdk.git] / lib / librte_bpf / bpf_load.c

diff --git a/lib/librte_bpf/bpf_load.c b/lib/librte_bpf/bpf_load.c
index f28ecfb..2a3b901 100644 (file)
--- a/lib/librte_bpf/bpf_load.c
+++ b/lib/librte_bpf/bpf_load.c
@@ -51,17 +51,64 @@ bpf_load(const struct rte_bpf_prm *prm)
        return bpf;
 }
 
-__rte_experimental struct rte_bpf *
+/*
+ * Check that user provided external symbol.
+ */
+static int
+bpf_check_xsym(const struct rte_bpf_xsym *xsym)
+{
+       uint32_t i;
+
+       if (xsym->name == NULL)
+               return -EINVAL;
+
+       if (xsym->type == RTE_BPF_XTYPE_VAR) {
+               if (xsym->var.desc.type == RTE_BPF_ARG_UNDEF)
+                       return -EINVAL;
+       } else if (xsym->type == RTE_BPF_XTYPE_FUNC) {
+
+               if (xsym->func.nb_args > EBPF_FUNC_MAX_ARGS)
+                       return -EINVAL;
+
+               /* check function arguments */
+               for (i = 0; i != xsym->func.nb_args; i++) {
+                       if (xsym->func.args[i].type == RTE_BPF_ARG_UNDEF)
+                               return -EINVAL;
+               }
+
+               /* check return value info */
+               if (xsym->func.ret.type != RTE_BPF_ARG_UNDEF &&
+                               xsym->func.ret.size == 0)
+                       return -EINVAL;
+       } else
+               return -EINVAL;
+
+       return 0;
+}
+
+struct rte_bpf *
 rte_bpf_load(const struct rte_bpf_prm *prm)
 {
        struct rte_bpf *bpf;
        int32_t rc;
+       uint32_t i;
 
-       if (prm == NULL || prm->ins == NULL) {
+       if (prm == NULL || prm->ins == NULL ||
+                       (prm->nb_xsym != 0 && prm->xsym == NULL)) {
                rte_errno = EINVAL;
                return NULL;
        }
 
+       rc = 0;
+       for (i = 0; i != prm->nb_xsym && rc == 0; i++)
+               rc = bpf_check_xsym(prm->xsym + i);
+
+       if (rc != 0) {
+               rte_errno = -rc;
+               RTE_BPF_LOG(ERR, "%s: %d-th xsym is invalid\n", __func__, i);
+               return NULL;
+       }
+
        bpf = bpf_load(prm);
        if (bpf == NULL) {
                rte_errno = ENOMEM;
@@ -83,3 +130,21 @@ rte_bpf_load(const struct rte_bpf_prm *prm)
 
        return bpf;
 }
+
+#ifndef RTE_LIBRTE_BPF_ELF
+struct rte_bpf *
+rte_bpf_elf_load(const struct rte_bpf_prm *prm, const char *fname,
+       const char *sname)
+{
+       if (prm == NULL || fname == NULL || sname == NULL) {
+               rte_errno = EINVAL;
+               return NULL;
+       }
+
+       RTE_BPF_LOG(ERR, "%s() is not supported with current config\n"
+               "rebuild with libelf installed\n",
+               __func__);
+       rte_errno = ENOTSUP;
+       return NULL;
+}
+#endif