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authorDan Gora <dg@adax.com>2018-10-24 19:26:29 -0300
committerThomas Monjalon <thomas@monjalon.net>2018-10-26 19:46:23 +0200
commit724beb913b44b4686b1d3f70bb5548d4210c1ca2 (patch)
treec19b0d30a1a709465cd64a3151e662702f3bf5ae /examples
parent89397a01ce4a194415a3db9e4231a7476a5776dc (diff)
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examples/kni: monitor and update link state continually
Update KNI example to add the command line flag '-m' to enable a function to continuously monitor the Ethernet link status of the physical link and update the link status of the corresponding interfaces with rte_kni_update_link(). Signed-off-by: Dan Gora <dg@adax.com> Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
Diffstat (limited to 'examples')
-rw-r--r--examples/kni/Makefile2
-rw-r--r--examples/kni/main.c70
-rw-r--r--examples/kni/meson.build1
3 files changed, 71 insertions, 2 deletions
diff --git a/examples/kni/Makefile b/examples/kni/Makefile
index 7e19d2e..dd90d7d 100644
--- a/examples/kni/Makefile
+++ b/examples/kni/Makefile
@@ -20,6 +20,7 @@ static: build/$(APP)-static
PC_FILE := $(shell pkg-config --path libdpdk)
CFLAGS += -O3 $(shell pkg-config --cflags libdpdk)
+CFLAGS += -DALLOW_EXPERIMENTAL_API
LDFLAGS_SHARED = $(shell pkg-config --libs libdpdk)
LDFLAGS_STATIC = -Wl,-Bstatic $(shell pkg-config --static --libs libdpdk)
@@ -54,6 +55,7 @@ please change the definition of the RTE_TARGET environment variable)
endif
CFLAGS += -O3
+CFLAGS += -DALLOW_EXPERIMENTAL_API
CFLAGS += $(WERROR_FLAGS)
include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/examples/kni/main.c b/examples/kni/main.c
index 80c401c..4fda517 100644
--- a/examples/kni/main.c
+++ b/examples/kni/main.c
@@ -106,6 +106,8 @@ static struct rte_mempool * pktmbuf_pool = NULL;
static uint32_t ports_mask = 0;
/* Ports set in promiscuous mode off by default. */
static int promiscuous_on = 0;
+/* Monitor link status continually. off by default. */
+static int monitor_links;
/* Structure type for recording kni interface specific stats */
struct kni_interface_stats {
@@ -325,11 +327,12 @@ main_loop(__rte_unused void *arg)
static void
print_usage(const char *prgname)
{
- RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P "
+ RTE_LOG(INFO, APP, "\nUsage: %s [EAL options] -- -p PORTMASK -P -m "
"[--config (port,lcore_rx,lcore_tx,lcore_kthread...)"
"[,(port,lcore_rx,lcore_tx,lcore_kthread...)]]\n"
" -p PORTMASK: hex bitmask of ports to use\n"
" -P : enable promiscuous mode\n"
+ " -m : enable monitoring of port carrier state\n"
" --config (port,lcore_rx,lcore_tx,lcore_kthread...): "
"port and lcore configurations\n",
prgname);
@@ -510,7 +513,7 @@ parse_args(int argc, char **argv)
opterr = 0;
/* Parse command line */
- while ((opt = getopt_long(argc, argv, "p:P", longopts,
+ while ((opt = getopt_long(argc, argv, "p:Pm", longopts,
&longindex)) != EOF) {
switch (opt) {
case 'p':
@@ -519,6 +522,9 @@ parse_args(int argc, char **argv)
case 'P':
promiscuous_on = 1;
break;
+ case 'm':
+ monitor_links = 1;
+ break;
case 0:
if (!strncmp(longopts[longindex].name,
CMDLINE_OPT_CONFIG,
@@ -674,6 +680,55 @@ check_all_ports_link_status(uint32_t port_mask)
}
}
+static void
+log_link_state(struct rte_kni *kni, int prev, struct rte_eth_link *link)
+{
+ if (kni == NULL || link == NULL)
+ return;
+
+ if (prev == ETH_LINK_DOWN && link->link_status == ETH_LINK_UP) {
+ RTE_LOG(INFO, APP, "%s NIC Link is Up %d Mbps %s %s.\n",
+ rte_kni_get_name(kni),
+ link->link_speed,
+ link->link_autoneg ? "(AutoNeg)" : "(Fixed)",
+ link->link_duplex ? "Full Duplex" : "Half Duplex");
+ } else if (prev == ETH_LINK_UP && link->link_status == ETH_LINK_DOWN) {
+ RTE_LOG(INFO, APP, "%s NIC Link is Down.\n",
+ rte_kni_get_name(kni));
+ }
+}
+
+/*
+ * Monitor the link status of all ports and update the
+ * corresponding KNI interface(s)
+ */
+static void *
+monitor_all_ports_link_status(void *arg)
+{
+ uint16_t portid;
+ struct rte_eth_link link;
+ unsigned int i;
+ struct kni_port_params **p = kni_port_params_array;
+ int prev;
+ (void) arg;
+
+ while (monitor_links) {
+ rte_delay_ms(500);
+ RTE_ETH_FOREACH_DEV(portid) {
+ if ((ports_mask & (1 << portid)) == 0)
+ continue;
+ memset(&link, 0, sizeof(link));
+ rte_eth_link_get_nowait(portid, &link);
+ for (i = 0; i < p[portid]->nb_kni; i++) {
+ prev = rte_kni_update_link(p[portid]->kni[i],
+ link.link_status);
+ log_link_state(p[portid]->kni[i], prev, &link);
+ }
+ }
+ }
+ return NULL;
+}
+
/* Callback for request of changing MTU */
static int
kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
@@ -893,6 +948,8 @@ main(int argc, char** argv)
int ret;
uint16_t nb_sys_ports, port;
unsigned i;
+ void *retval;
+ pthread_t kni_link_tid;
/* Associate signal_hanlder function with USR signals */
signal(SIGUSR1, signal_handler);
@@ -949,12 +1006,21 @@ main(int argc, char** argv)
}
check_all_ports_link_status(ports_mask);
+ ret = rte_ctrl_thread_create(&kni_link_tid,
+ "KNI link status check", NULL,
+ monitor_all_ports_link_status, NULL);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE,
+ "Could not create link status thread!\n");
+
/* Launch per-lcore function on every lcore */
rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
RTE_LCORE_FOREACH_SLAVE(i) {
if (rte_eal_wait_lcore(i) < 0)
return -1;
}
+ monitor_links = 0;
+ pthread_join(kni_link_tid, &retval);
/* Release resources */
RTE_ETH_FOREACH_DEV(port) {
diff --git a/examples/kni/meson.build b/examples/kni/meson.build
index 7913163..fd6ae44 100644
--- a/examples/kni/meson.build
+++ b/examples/kni/meson.build
@@ -12,3 +12,4 @@ deps += ['kni', 'bus_pci']
sources = files(
'main.c'
)
+allow_experimental_apis = true