fcoe-utils/0007-fipvlan-create-VLANs-from-netlink-handler.patch
2014-03-19 09:20:41 +00:00

144 lines
4.1 KiB
Diff

From ac1fc202b5efda33df3445c2a60709264a0032e5 Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <hare@suse.de>
Date: Tue, 19 Nov 2013 20:26:04 +0000
Subject: fipvlan: create VLANs from netlink handler
Instead of having its own loop we should better create VLANs
directly from the netlink handler. With this we can eliminate
the create_missing_vlans() loop.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Robert Love <robert.w.love@intel.com>
---
fipvlan.c | 77 +++++++++++++++++++++++++--------------------------------------
1 file changed, 30 insertions(+), 47 deletions(-)
diff --git a/fipvlan.c b/fipvlan.c
index d91cc1c..501f79c 100644
--- a/fipvlan.c
+++ b/fipvlan.c
@@ -157,6 +157,8 @@ struct fcf {
struct fcf_list_head fcfs = TAILQ_HEAD_INITIALIZER(fcfs);
static struct fcf_list_head vn2vns = TAILQ_HEAD_INITIALIZER(vn2vns);
+static int create_and_start_vlan(struct fcf *fcf, bool vn2vn);
+
static struct fcf *lookup_fcf(struct fcf_list_head *head, int ifindex,
uint16_t vlan, unsigned char *mac)
{
@@ -316,6 +318,9 @@ static int fip_recv_vlan_note(struct fiphdr *fh, int ifindex, bool vn2vn)
fcf->vlan = vlan;
memcpy(fcf->mac_addr, tlvs.mac->mac_addr, ETHER_ADDR_LEN);
TAILQ_INSERT_TAIL(head, fcf, list_node);
+ if (!config.create)
+ continue;
+ create_and_start_vlan(fcf, vn2vn);
}
return 0;
@@ -545,7 +550,7 @@ static int rtnl_listener_handler(struct nlmsghdr *nh, UNUSED void *arg)
}
static int
-create_missing_vlan(struct fcf *fcf, const char *label)
+create_and_start_vlan(struct fcf *fcf, bool vn2vn)
{
struct iff *real_dev, *vlan;
char vlan_name[IFNAMSIZ];
@@ -555,7 +560,7 @@ create_missing_vlan(struct fcf *fcf, const char *label)
if (!real_dev) {
FIP_LOG_ERR(ENODEV,
"lost device %d with discovered %s?\n",
- fcf->ifindex, label);
+ fcf->ifindex, vn2vn ? "VN2VN" : "FCF");
return -ENXIO;
}
if (!fcf->vlan) {
@@ -565,45 +570,31 @@ create_missing_vlan(struct fcf *fcf, const char *label)
* started on the physical interface itself.
*/
FIP_LOG_DBG("VLAN id is 0 for %s\n", real_dev->ifname);
- return -EPERM;
- }
- vlan = lookup_vlan(fcf->ifindex, fcf->vlan);
- if (vlan) {
- FIP_LOG_DBG("VLAN %s.%d already exists as %s\n",
- real_dev->ifname, fcf->vlan, vlan->ifname);
- return -EEXIST;
- }
- snprintf(vlan_name, IFNAMSIZ, "%s.%d%s",
- real_dev->ifname, fcf->vlan, config.suffix);
- rc = vlan_create(fcf->ifindex, fcf->vlan, vlan_name);
- if (rc < 0)
- printf("Failed to create VLAN device %s\n\t%s\n",
- vlan_name, strerror(-rc));
- else
+ vlan = real_dev;
+ } else {
+ vlan = lookup_vlan(fcf->ifindex, fcf->vlan);
+ if (vlan) {
+ FIP_LOG_DBG("VLAN %s.%d already exists as %s\n",
+ real_dev->ifname, fcf->vlan, vlan->ifname);
+ return 0;
+ }
+ snprintf(vlan_name, IFNAMSIZ, "%s.%d%s",
+ real_dev->ifname, fcf->vlan, config.suffix);
+ rc = vlan_create(fcf->ifindex, fcf->vlan, vlan_name);
+ if (rc < 0) {
+ printf("Failed to create VLAN device %s\n\t%s\n",
+ vlan_name, strerror(-rc));
+ return rc;
+ }
printf("Created VLAN device %s\n", vlan_name);
- return rc;
-}
-
-static void
-create_missing_vlans_list(struct fcf_list_head *list, const char *label)
-{
- struct fcf *fcf;
-
- if (!config.create)
- return;
-
- TAILQ_FOREACH(fcf, list, list_node) {
- create_missing_vlan(fcf, label);
}
- printf("\n");
-}
-
-static void create_missing_vlans(void)
-{
- if (!TAILQ_EMPTY(&fcfs))
- create_missing_vlans_list(&fcfs, "FCF");
- if (!TAILQ_EMPTY(&vn2vns))
- create_missing_vlans_list(&vn2vns, "VN2VN");
+ if (config.start && !vlan->running) {
+ FIP_LOG_DBG("%s if %d not running, "
+ "starting", vlan == real_dev ? "real" : "vlan",
+ vlan->ifindex);
+ rtnl_set_iff_up(vlan->ifindex, NULL);
+ }
+ return rc;
}
static int fcoe_mod_instance_start(const char *ifname)
@@ -957,14 +948,6 @@ int main(int argc, char **argv)
do_vlan_discovery();
rc = print_results();
- if (!rc && config.create) {
- create_missing_vlans();
- /*
- * need to listen for the RTM_NETLINK messages
- * about the new VLAN devices
- */
- recv_loop(500);
- }
if (!rc && config.start)
start_fcoe();
--
1.8.1.4