VLAN support with vdev devices + few other changes

- vdev devices now support VLAN.
- kernel tap device can be configured with a netmask (/24 was
  always used in previous version).
- when sending a (fake) packet to the kernel, this packet will now
  not be routed by the kernel (i.e. it will leave through the
  interface configured by PROX). This might change in the futture
  when PROX supports multiple VLANs per port. But today it prevents
  ARP being sent on management interfaces.
- Log error in case kernel unable to send packet.
- Added support for comments (';') in lua sections.
- Prevent duplication of local_ipv4 - should now be configured in port section
  local_ipv4 in core section still supported

Change-Id: I8f9a40fe6ad6f3013ff91b58b44627c7f34081e6
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>

1 files changed, 10 insertions, 2 deletions

diff --git a/VNFs/DPPD-PROX/prox_args.c b/VNFs/DPPD-PROX/prox_args.c
index 25599cb7..43f9d5fb 100644
--- a/VNFs/DPPD-PROX/prox_args.c
+++ b/VNFs/DPPD-PROX/prox_args.c
@@ -568,7 +568,15 @@ static int get_port_cfg(unsigned sindex, char *str, void *data)
 		cfg->lsc_val = val;
 	}
 	else if (STR_EQ(str, "local ipv4")) {
-		return parse_ip(&cfg->ip, pkey);
+		struct ip4_subnet cidr;
+		if (parse_ip4_and_prefix(&cidr, pkey) != 0) {
+			cfg->prefix = 24;
+			return parse_ip(&cfg->ip, pkey);
+		} else {
+			cfg->ip = cidr.ip;
+			cfg->prefix = cidr.prefix;
+			return 0;
+		}
 	}
 	else if (STR_EQ(str, "vdev")) {
 		prox_strncpy(cfg->vdev, pkey, MAX_NAME_SIZE);
@@ -1474,7 +1482,7 @@ static int get_core_cfg(unsigned sindex, char *str, void *data)
 	}
 	if (STR_EQ(str, "local ipv4")) { /* source IP address to be used for packets */
 		struct ip4_subnet cidr;
-		if (parse_ip4_cidr(&cidr, pkey) != 0) {
+		if (parse_ip4_and_prefix(&cidr, pkey) != 0) {
 			if (targ->gateway_ipv4)
 				targ->local_prefix = 32;
 			else