X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_ethdev%2Fethdev_private.c;h=162a502fe79afd994a70ebcf0db2a8345826acd5;hb=01b3156d33e06f829d1b1ae8302d4a53266f2864;hp=768c8b2ed5eaa30c11877a12b7ecd9ed0fdbd532;hpb=600ce805363601104cf7678eaf30fa409226996a;p=dpdk.git

diff --git a/lib/librte_ethdev/ethdev_private.c b/lib/librte_ethdev/ethdev_private.c
index 768c8b2ed5..162a502fe7 100644
--- a/lib/librte_ethdev/ethdev_private.c
+++ b/lib/librte_ethdev/ethdev_private.c
@@ -3,8 +3,17 @@
  */
 
 #include "rte_ethdev.h"
+#include "rte_ethdev_driver.h"
 #include "ethdev_private.h"
 
+uint16_t
+eth_dev_to_id(const struct rte_eth_dev *dev)
+{
+	if (dev == NULL)
+		return RTE_MAX_ETHPORTS;
+	return dev - rte_eth_devices;
+}
+
 struct rte_eth_dev *
 eth_find_device(const struct rte_eth_dev *start, rte_eth_cmp_t cmp,
 		const void *data)
@@ -18,7 +27,7 @@ eth_find_device(const struct rte_eth_dev *start, rte_eth_cmp_t cmp,
 	     start > &rte_eth_devices[RTE_MAX_ETHPORTS]))
 		return NULL;
 	if (start != NULL)
-		idx = start - &rte_eth_devices[0] + 1;
+		idx = eth_dev_to_id(start) + 1;
 	else
 		idx = 0;
 	for (; idx < RTE_MAX_ETHPORTS; idx++) {
@@ -29,3 +38,84 @@ eth_find_device(const struct rte_eth_dev *start, rte_eth_cmp_t cmp,
 	return NULL;
 }
 
+int
+rte_eth_devargs_parse_list(char *str, rte_eth_devargs_callback_t callback,
+	void *data)
+{
+	char *str_start;
+	int state;
+	int result;
+
+	if (*str != '[')
+		/* Single element, not a list */
+		return callback(str, data);
+
+	/* Sanity check, then strip the brackets */
+	str_start = &str[strlen(str) - 1];
+	if (*str_start != ']') {
+		RTE_LOG(ERR, EAL, "(%s): List does not end with ']'\n", str);
+		return -EINVAL;
+	}
+	str++;
+	*str_start = '\0';
+
+	/* Process list elements */
+	state = 0;
+	while (1) {
+		if (state == 0) {
+			if (*str == '\0')
+				break;
+			if (*str != ',') {
+				str_start = str;
+				state = 1;
+			}
+		} else if (state == 1) {
+			if (*str == ',' || *str == '\0') {
+				if (str > str_start) {
+					/* Non-empty string fragment */
+					*str = '\0';
+					result = callback(str_start, data);
+					if (result < 0)
+						return result;
+				}
+				state = 0;
+			}
+		}
+		str++;
+	}
+	return 0;
+}
+
+static int
+rte_eth_devargs_process_range(char *str, uint16_t *list, uint16_t *len_list,
+	const uint16_t max_list)
+{
+	uint16_t lo, hi, val;
+	int result;
+
+	result = sscanf(str, "%hu-%hu", &lo, &hi);
+	if (result == 1) {
+		if (*len_list >= max_list)
+			return -ENOMEM;
+		list[(*len_list)++] = lo;
+	} else if (result == 2) {
+		if (lo >= hi || lo > RTE_MAX_ETHPORTS || hi > RTE_MAX_ETHPORTS)
+			return -EINVAL;
+		for (val = lo; val <= hi; val++) {
+			if (*len_list >= max_list)
+				return -ENOMEM;
+			list[(*len_list)++] = val;
+		}
+	} else
+		return -EINVAL;
+	return 0;
+}
+
+int
+rte_eth_devargs_parse_representor_ports(char *str, void *data)
+{
+	struct rte_eth_devargs *eth_da = data;
+
+	return rte_eth_devargs_process_range(str, eth_da->representor_ports,
+		&eth_da->nb_representor_ports, RTE_MAX_ETHPORTS);
+}