mempool: fix slow allocation of large mempools

[dpdk.git] / lib / librte_net / rte_ether.c

diff --git a/lib/librte_net/rte_ether.c b/lib/librte_net/rte_ether.c
index 974fe81..ced65ed 100644 (file)
--- a/lib/librte_net/rte_ether.c
+++ b/lib/librte_net/rte_ether.c
@@ -2,7 +2,10 @@
  * Copyright(c) 2010-2014 Intel Corporation
  */
 
+#include <stdbool.h>
+
 #include <rte_ether.h>
+#include <rte_errno.h>
 
 void
 rte_eth_random_addr(uint8_t *addr)
@@ -27,3 +30,86 @@ rte_ether_format_addr(char *buf, uint16_t size,
                 eth_addr->addr_bytes[4],
                 eth_addr->addr_bytes[5]);
 }
+
+static int8_t get_xdigit(char ch)
+{
+       if (ch >= '0' && ch <= '9')
+               return ch - '0';
+       if (ch >= 'a' && ch <= 'f')
+               return ch - 'a' + 10;
+       if (ch >= 'A' && ch <= 'F')
+               return ch - 'A' + 10;
+       return -1;
+}
+
+/* Convert 00:11:22:33:44:55 to ethernet address */
+static bool get_ether_addr6(const char *s0, struct rte_ether_addr *ea)
+{
+       const char *s = s0;
+       int i;
+
+       for (i = 0; i < RTE_ETHER_ADDR_LEN; i++) {
+               int8_t x;
+
+               x = get_xdigit(*s++);
+               if (x < 0)
+                       return false;
+
+               ea->addr_bytes[i] = x << 4;
+               x = get_xdigit(*s++);
+               if (x < 0)
+                       return false;
+               ea->addr_bytes[i] |= x;
+
+               if (i < RTE_ETHER_ADDR_LEN - 1 &&
+                   *s++ != ':')
+                       return false;
+       }
+
+       /* return true if at end of string */
+       return *s == '\0';
+}
+
+/* Convert 0011:2233:4455 to ethernet address */
+static bool get_ether_addr3(const char *s, struct rte_ether_addr *ea)
+{
+       int i, j;
+
+       for (i = 0; i < RTE_ETHER_ADDR_LEN; i += 2) {
+               uint16_t w = 0;
+
+               for (j = 0; j < 4; j++) {
+                       int8_t x;
+
+                       x = get_xdigit(*s++);
+                       if (x < 0)
+                               return false;
+                       w = (w << 4) | x;
+               }
+               ea->addr_bytes[i] = w >> 8;
+               ea->addr_bytes[i + 1] = w & 0xff;
+
+               if (i < RTE_ETHER_ADDR_LEN - 2 &&
+                   *s++ != ':')
+                       return false;
+       }
+
+       return *s == '\0';
+}
+
+/*
+ * Like ether_aton_r but can handle either
+ * XX:XX:XX:XX:XX:XX or XXXX:XXXX:XXXX
+ * and is more restrictive.
+ */
+int
+rte_ether_unformat_addr(const char *s, struct rte_ether_addr *ea)
+{
+       if (get_ether_addr6(s, ea))
+               return 0;
+       if (get_ether_addr3(s, ea))
+               return 0;
+
+       rte_errno = EINVAL;
+       return -1;
+}