* [spp] [PATCH] shared: add parsing ethdev name
@ 2019-07-16 12:33 yasufum.o
0 siblings, 0 replies; only message in thread
From: yasufum.o @ 2019-07-16 12:33 UTC (permalink / raw)
To: spp, ferruh.yigit, yasufum.o
From: Yasufumi Ogawa <yasufum.o@gmail.com>
This update is to add parser parse_dev_name() for the name of ethdev,
such as `eth_vhost1` or `net_ring1`. By using this function,
port type `VHOST` and ID `1` can be extracted from `eth_vhost1`.
This parser is intended to be used in initialization of ports in
secondary process in which all shared ports managed by spp_primary are
initialized as PHY incorrectly even if it is not PHY type. It is
because secondary expects the type of ports in spp_primary is always
PHY. However, port type might be other than PHY if spp_primary is
launched with `--vdev` option.
By using this parser, port type and ID can be inspected in secondary.
Signed-off-by: Yasufumi Ogawa <yasufum.o@gmail.com>
---
src/shared/common.c | 66 +++++++++++++++++++++++++++++++++++++++++++++
src/shared/common.h | 17 ++++++++++++
2 files changed, 83 insertions(+)
diff --git a/src/shared/common.c b/src/shared/common.c
index 55c53c0..6655f17 100644
--- a/src/shared/common.c
+++ b/src/shared/common.c
@@ -163,3 +163,69 @@ int set_spp_ctl_port(int s_port)
spp_ctl_port = s_port;
return 0;
}
+
+/**
+ * Get port type and port ID from ethdev name, such as `eth_vhost1` which
+ * can be retrieved with rte_eth_dev_get_name_by_port().
+ * In this case of `eth_vhost1`, port type is `VHOST` and port ID is `1`.
+ */
+int parse_dev_name(char *dev_name, int *port_type, int *port_id)
+{
+ char pid_str[12] = { 0 };
+ int pid_len;
+ int dev_name_len = strlen(dev_name);
+ int dev_str_len;
+
+ if (strncmp(dev_name, VDEV_PREFIX_RING,
+ strlen(VDEV_PREFIX_RING)) == 0) {
+ dev_str_len = strlen(VDEV_PREFIX_RING);
+ pid_len = dev_name_len - dev_str_len;
+ strncpy(pid_str, dev_name + strlen(VDEV_PREFIX_RING),
+ pid_len);
+ *port_id = (int)strtol(pid_str, NULL, 10);
+ *port_type = RING;
+
+ } else if (strncmp(dev_name, VDEV_PREFIX_VHOST,
+ strlen(VDEV_PREFIX_VHOST)) == 0) {
+ dev_str_len = strlen(VDEV_PREFIX_VHOST);
+ pid_len = dev_name_len - dev_str_len;
+ strncpy(pid_str, dev_name + strlen(VDEV_PREFIX_VHOST),
+ pid_len);
+ *port_id = (int)strtol(pid_str, NULL, 10);
+ *port_type = VHOST;
+
+ } else if (strncmp(dev_name, VDEV_PREFIX_PCAP,
+ strlen(VDEV_PREFIX_PCAP)) == 0) {
+ dev_str_len = strlen(VDEV_PREFIX_PCAP);
+ pid_len = dev_name_len - dev_str_len;
+ strncpy(pid_str, dev_name + strlen(VDEV_PREFIX_PCAP),
+ pid_len);
+ *port_id = (int)strtol(pid_str, NULL, 10);
+ *port_type = PCAP;
+
+ } else if (strncmp(dev_name, VDEV_PREFIX_TAP,
+ strlen(VDEV_PREFIX_TAP)) == 0) {
+ dev_str_len = strlen(VDEV_PREFIX_TAP);
+ pid_len = dev_name_len - dev_str_len;
+ strncpy(pid_str, dev_name + strlen(VDEV_PREFIX_TAP),
+ pid_len);
+ *port_id = (int)strtol(pid_str, NULL, 10);
+ *port_type = TAP;
+
+ } else if (strncmp(dev_name, VDEV_PREFIX_NULL,
+ strlen(VDEV_PREFIX_NULL)) == 0) {
+ dev_str_len = strlen(VDEV_PREFIX_NULL);
+ pid_len = dev_name_len - dev_str_len;
+ strncpy(pid_str, dev_name + strlen(VDEV_PREFIX_NULL),
+ pid_len);
+ *port_id = (int)strtol(pid_str, NULL, 10);
+ *port_type = PCAP;
+
+ /* TODO(yasufum) add checking invalid port type and return -1 */
+ } else {
+ *port_id = 0;
+ *port_type = PHY;
+ }
+
+ return 0;
+}
diff --git a/src/shared/common.h b/src/shared/common.h
index 78d2520..d51d6df 100644
--- a/src/shared/common.h
+++ b/src/shared/common.h
@@ -43,6 +43,13 @@
#define RTE_MP_RX_DESC_DEFAULT 512
#define RTE_MP_TX_DESC_DEFAULT 512
+#define VDEV_PREFIX_RING "net_ring"
+#define VDEV_PREFIX_VHOST "eth_vhost"
+#define VDEV_PREFIX_PCAP "net_pcap"
+#define VDEV_PREFIX_TAP "net_tap"
+#define VDEV_PREFIX_NULL "eth_null"
+
+
/* Command. */
enum cmd_type {
STOP,
@@ -82,6 +89,7 @@ enum port_type {
VHOST,
PCAP,
NULLPMD,
+ TAP,
UNDEF,
};
@@ -172,4 +180,13 @@ int get_spp_ctl_port(void);
*/
int set_spp_ctl_port(int s_port);
+/**
+ * Get port type and port ID from ethdev name, such as `eth_vhost1` which
+ * can be retrieved with rte_eth_dev_get_name_by_port().
+ * In this case of `eth_vhost1`, port type is `VHOST` and port ID is `1`.
+ *
+ * @return 0 if succeeded, or -1 if failed.
+ */
+int parse_dev_name(char *dev_name, int *port_type, int *port_id);
+
#endif
--
2.17.1
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