eal: allow to whitelist devices

[dpdk.git] / lib / librte_eal / linuxapp / eal / eal.c

diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 93a6d82..8640e55 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -87,6 +87,7 @@
 #define OPT_NO_HUGE     "no-huge"
 #define OPT_FILE_PREFIX "file-prefix"
 #define OPT_SOCKET_MEM  "socket-mem"
+#define OPT_USE_DEVICE  "use-device"
 #define OPT_SYSLOG      "syslog"
 
 #define RTE_EAL_BLACKLIST_SIZE 0x100
@@ -335,6 +336,9 @@ eal_usage(const char *prgname)
               "  --"OPT_HUGE_DIR"   : directory where hugetlbfs is mounted\n"
               "  --"OPT_PROC_TYPE"  : type of this process\n"
               "  --"OPT_FILE_PREFIX": prefix for hugepage filenames\n"
+              "  --"OPT_USE_DEVICE": use the specified ethernet device(s) only."
+                          "Use comma-separate <[domain:]bus:devid.func> values.\n"
+              "               [NOTE: Cannot be used with -b option]\n"
               "  --"OPT_VMWARE_TSC_MAP": use VMware TSC map instead of "
                           "native RDTSC\n"
               "\nEAL options for DEBUG use only:\n"
@@ -589,6 +593,7 @@ eal_parse_args(int argc, char **argv)
                {OPT_PROC_TYPE, 1, 0, 0},
                {OPT_FILE_PREFIX, 1, 0, 0},
                {OPT_SOCKET_MEM, 1, 0, 0},
+               {OPT_USE_DEVICE, 1, 0, 0},
                {OPT_SYSLOG, 1, NULL, 0},
                {0, 0, 0, 0}
        };
@@ -705,6 +710,9 @@ eal_parse_args(int argc, char **argv)
                                        return -1;
                                }
                        }
+                       else if (!strcmp(lgopts[option_index].name, OPT_USE_DEVICE)) {
+                               eal_dev_whitelist_add_entry(optarg);
+                       }
                        else if (!strcmp(lgopts[option_index].name, OPT_SYSLOG)) {
                                if (eal_parse_syslog(optarg) < 0) {
                                        RTE_LOG(ERR, EAL, "invalid parameters for --"
@@ -762,8 +770,21 @@ eal_parse_args(int argc, char **argv)
                return -1;
        }
 
-       if (blacklist_index > 0)
+       /* if no blacklist, parse a whitelist */
+       if (blacklist_index > 0) {
+               if (eal_dev_whitelist_exists()) {
+                       RTE_LOG(ERR, EAL, "Error: blacklist [-b] and whitelist "
+                                       "[--use-device] options cannot be used at the same time\n");
+                       eal_usage(prgname);
+                       return -1;
+               }
                rte_eal_pci_set_blacklist(eal_dev_blacklist, blacklist_index);
+       } else {
+               if (eal_dev_whitelist_exists() && eal_dev_whitelist_parse() < 0) {
+                       RTE_LOG(ERR,EAL, "Error parsing whitelist[--use-device] options\n");
+                       return -1;
+               }
+       }
 
        if (optind >= 0)
                argv[optind-1] = prgname;