summaryrefslogtreecommitdiffstats
path: root/src/vnet/dhcp/client.c
diff options
context:
space:
mode:
authorNeale Ranns <nranns@cisco.com>2019-07-19 14:01:02 +0000
committerDamjan Marion <dmarion@me.com>2019-07-26 13:27:14 +0000
commit038e1dfbdfd0bd785852c364011da0a1d828093e (patch)
tree4e3a039c240e9e91123ff363f909caabc4c909f4 /src/vnet/dhcp/client.c
parent08ac303e43492c8b25911340fb62811289dd3935 (diff)
dhcp ip: DSCP settings for transmitted DHCP packets
Type: feature - Define the ip_dscp_t and use in the IP headers - Add DSCP setting to the DHCP client for use with packet TX Change-Id: If220dde0017ea78793747d65f53e11daf23a28fa Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/dhcp/client.c')
-rw-r--r--src/vnet/dhcp/client.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/src/vnet/dhcp/client.c b/src/vnet/dhcp/client.c
index 472de5253ef..aaeda96327d 100644
--- a/src/vnet/dhcp/client.c
+++ b/src/vnet/dhcp/client.c
@@ -17,6 +17,7 @@
#include <vnet/dhcp/client.h>
#include <vnet/dhcp/dhcp_proxy.h>
#include <vnet/fib/fib_table.h>
+#include <vnet/qos/qos_types.h>
dhcp_client_main_t dhcp_client_main;
static u8 *format_dhcp_client_state (u8 * s, va_list * va);
@@ -434,6 +435,19 @@ send_dhcp_pkt (dhcp_client_main_t * dcm, dhcp_client_t * c,
ip->ttl = 128;
ip->protocol = IP_PROTOCOL_UDP;
+ ip->tos = c->dscp;
+
+ if (ip->tos)
+ {
+ /*
+ * Setup the buffer's QoS settings so any QoS marker on the egress
+ * interface, that might set VLAN CoS bits, based on this DSCP setting
+ */
+ vnet_buffer2 (b)->qos.source = QOS_SOURCE_IP;
+ vnet_buffer2 (b)->qos.bits = ip->tos;
+ b->flags |= VNET_BUFFER_F_QOS_DATA_VALID;
+ }
+
if (is_broadcast)
{
/* src = 0.0.0.0, dst = 255.255.255.255 */
@@ -825,6 +839,9 @@ format_dhcp_client (u8 * s, va_list * va)
format_vnet_sw_if_index_name, dcm->vnet_main, c->sw_if_index,
format_dhcp_client_state, c->state);
+ if (0 != c->dscp)
+ s = format (s, "dscp %d ", c->dscp);
+
if (c->leased_address.as_u32)
{
s = format (s, "addr %U/%d gw %U",
@@ -942,6 +959,7 @@ dhcp_client_add_del (dhcp_client_add_del_args_t * a)
c->hostname = a->hostname;
c->client_identifier = a->client_identifier;
c->set_broadcast_flag = a->set_broadcast_flag;
+ c->dscp = a->dscp;
c->ai_ucast = ADJ_INDEX_INVALID;
c->ai_bcast = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4,
VNET_LINK_IP4,
@@ -1011,7 +1029,7 @@ dhcp_client_config (u32 is_add,
u8 * hostname,
u8 * client_id,
dhcp_event_cb_t event_callback,
- u8 set_broadcast_flag, u32 pid)
+ u8 set_broadcast_flag, ip_dscp_t dscp, u32 pid)
{
dhcp_client_add_del_args_t _a, *a = &_a;
int rv;
@@ -1023,6 +1041,7 @@ dhcp_client_config (u32 is_add,
a->pid = pid;
a->event_callback = event_callback;
a->set_broadcast_flag = set_broadcast_flag;
+ a->dscp = dscp;
vec_validate (a->hostname, strlen ((char *) hostname) - 1);
strncpy ((char *) a->hostname, (char *) hostname, vec_len (a->hostname));
vec_validate (a->client_identifier, strlen ((char *) client_id) - 1);