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-rw-r--r--src/plugins/vrrp/node.c46
-rw-r--r--src/plugins/vrrp/vrrp.c5
-rw-r--r--src/plugins/vrrp/vrrp_packet.h9
3 files changed, 33 insertions, 27 deletions
diff --git a/src/plugins/vrrp/node.c b/src/plugins/vrrp/node.c
index 7ba18c4f75c..c6b619ec74c 100644
--- a/src/plugins/vrrp/node.c
+++ b/src/plugins/vrrp/node.c
@@ -86,22 +86,16 @@ typedef enum
VRRP_INPUT_N_NEXT,
} vrrp_next_t;
-typedef struct vrrp_input_process_args
-{
- u32 vr_index;
- vrrp_header_t *pkt;
-} vrrp_input_process_args_t;
-
/* Given a VR and a pointer to the VRRP header of an incoming packet,
* compare the local src address to the peers. Return < 0 if the local
* address < the peer address, 0 if they're equal, > 0 if
* the local address > the peer address
*/
static int
-vrrp_vr_addr_cmp (vrrp_vr_t * vr, vrrp_header_t * pkt)
+vrrp_vr_addr_cmp (vrrp_vr_t *vr, ip46_address_t *peer_addr)
{
vrrp_vr_config_t *vrc = &vr->config;
- void *peer_addr, *local_addr;
+ void *peer_addr_bytes, *local_addr;
ip46_address_t addr;
int addr_size;
@@ -109,7 +103,7 @@ vrrp_vr_addr_cmp (vrrp_vr_t * vr, vrrp_header_t * pkt)
if (vrrp_vr_is_ipv6 (vr))
{
- peer_addr = &(((ip6_header_t *) pkt) - 1)->src_address;
+ peer_addr_bytes = &peer_addr->ip6;
local_addr = &addr.ip6;
addr_size = 16;
ip6_address_copy (local_addr,
@@ -117,22 +111,22 @@ vrrp_vr_addr_cmp (vrrp_vr_t * vr, vrrp_header_t * pkt)
}
else
{
- peer_addr = &(((ip4_header_t *) pkt) - 1)->src_address;
+ peer_addr_bytes = &peer_addr->ip4;
local_addr = &addr.ip4;
addr_size = 4;
fib_sas4_get (vrc->sw_if_index, NULL, local_addr);
}
- return memcmp (local_addr, peer_addr, addr_size);
+ return memcmp (local_addr, peer_addr_bytes, addr_size);
}
static void
-vrrp_input_process_master (vrrp_vr_t * vr, vrrp_header_t * pkt)
+vrrp_input_process_master (vrrp_vr_t *vr, vrrp_input_process_args_t *args)
{
/* received priority 0, another VR is shutting down. send an adv and
* remain in the master state
*/
- if (pkt->priority == 0)
+ if (args->priority == 0)
{
clib_warning ("Received shutdown message from a peer on VR %U",
format_vrrp_vr_key, vr);
@@ -146,11 +140,11 @@ vrrp_input_process_master (vrrp_vr_t * vr, vrrp_header_t * pkt)
* - received priority == adjusted priority and peer addr > local addr
* allow the local VR to be preempted by the peer
*/
- if ((pkt->priority > vrrp_vr_priority (vr)) ||
- ((pkt->priority == vrrp_vr_priority (vr)) &&
- (vrrp_vr_addr_cmp (vr, pkt) < 0)))
+ if ((args->priority > vrrp_vr_priority (vr)) ||
+ ((args->priority == vrrp_vr_priority (vr)) &&
+ (vrrp_vr_addr_cmp (vr, &args->src_addr) < 0)))
{
- vrrp_vr_transition (vr, VRRP_VR_STATE_BACKUP, pkt);
+ vrrp_vr_transition (vr, VRRP_VR_STATE_BACKUP, args);
return;
}
@@ -163,13 +157,13 @@ vrrp_input_process_master (vrrp_vr_t * vr, vrrp_header_t * pkt)
/* RFC 5798 section 6.4.2 */
static void
-vrrp_input_process_backup (vrrp_vr_t * vr, vrrp_header_t * pkt)
+vrrp_input_process_backup (vrrp_vr_t *vr, vrrp_input_process_args_t *args)
{
vrrp_vr_config_t *vrc = &vr->config;
vrrp_vr_runtime_t *vrt = &vr->runtime;
/* master shutting down, ready for election */
- if (pkt->priority == 0)
+ if (args->priority == 0)
{
clib_warning ("Master for VR %U is shutting down", format_vrrp_vr_key,
vr);
@@ -180,10 +174,9 @@ vrrp_input_process_backup (vrrp_vr_t * vr, vrrp_header_t * pkt)
/* no preempt set or adv from a higher priority router, update timers */
if (!(vrc->flags & VRRP_VR_PREEMPT) ||
- (pkt->priority >= vrrp_vr_priority (vr)))
+ (args->priority >= vrrp_vr_priority (vr)))
{
- vrt->master_adv_int = clib_net_to_host_u16 (pkt->rsvd_and_max_adv_int);
- vrt->master_adv_int &= ((u16) 0x0fff); /* ignore rsvd bits */
+ vrt->master_adv_int = args->max_adv_int;
vrrp_vr_skew_compute (vr);
vrrp_vr_master_down_compute (vr);
@@ -214,13 +207,13 @@ vrrp_input_process (vrrp_input_process_args_t * args)
return;
case VRRP_VR_STATE_BACKUP:
/* this is usually the only state an advertisement should be received */
- vrrp_input_process_backup (vr, args->pkt);
+ vrrp_input_process_backup (vr, args);
break;
case VRRP_VR_STATE_MASTER:
/* might be getting preempted. or have a misbehaving peer */
clib_warning ("Received advertisement for master VR %U",
format_vrrp_vr_key, vr);
- vrrp_input_process_master (vr, args->pkt);
+ vrrp_input_process_master (vr, args);
break;
default:
clib_warning ("Received advertisement for VR %U in unknown state %d",
@@ -586,6 +579,7 @@ vrrp_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
addr_len = 16;
payload_len0 = clib_net_to_host_u16 (ip6->payload_length);
vlib_buffer_advance (b0, sizeof (*ip6));
+ clib_memcpy_fast (&args0.src_addr.ip6, &ip6->src_address, addr_len);
}
else
{
@@ -596,6 +590,7 @@ vrrp_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
addr_len = 4;
payload_len0 = clib_net_to_host_u16 (ip4->length) - sizeof(*ip4);
vlib_buffer_advance (b0, sizeof (*ip4));
+ clib_memcpy_fast (&args0.src_addr.ip4, &ip4->src_address, addr_len);
}
next0 = VRRP_INPUT_NEXT_DROP;
@@ -656,7 +651,8 @@ vrrp_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
/* signal main thread to process contents of packet */
args0.vr_index = vr0 - vmp->vrs;
- args0.pkt = vrrp0;
+ args0.priority = vrrp0->priority;
+ args0.max_adv_int = vrrp_adv_int_from_packet (vrrp0);
vl_api_rpc_call_main_thread (vrrp_input_process, (u8 *) &args0,
sizeof (args0));
diff --git a/src/plugins/vrrp/vrrp.c b/src/plugins/vrrp/vrrp.c
index 8461798e02a..99533edaca0 100644
--- a/src/plugins/vrrp/vrrp.c
+++ b/src/plugins/vrrp/vrrp.c
@@ -310,9 +310,10 @@ vrrp_vr_transition (vrrp_vr_t * vr, vrrp_vr_state_t new_state, void *data)
if (vr->runtime.state == VRRP_VR_STATE_MASTER)
{
- vrrp_header_t *pkt = data;
- vr->runtime.master_adv_int = vrrp_adv_int_from_packet (pkt);
+ vrrp_input_process_args_t *args = data;
+ if (args)
+ vr->runtime.master_adv_int = args->max_adv_int;
}
else /* INIT, INTF_DOWN */
vr->runtime.master_adv_int = vr->config.adv_interval;
diff --git a/src/plugins/vrrp/vrrp_packet.h b/src/plugins/vrrp/vrrp_packet.h
index 1cbf62d7c72..d5725b6a1a5 100644
--- a/src/plugins/vrrp/vrrp_packet.h
+++ b/src/plugins/vrrp/vrrp_packet.h
@@ -47,6 +47,15 @@ vrrp_adv_int_from_packet (vrrp_header_t * pkt)
return clib_net_to_host_u16 (pkt->rsvd_and_max_adv_int) & ((u16) 0x0fff);
}
+/* Fields from VRRP advertisement packets needed by main thread */
+typedef struct vrrp_input_process_args
+{
+ u32 vr_index;
+ ip46_address_t src_addr;
+ u8 priority;
+ u8 max_adv_int;
+} vrrp_input_process_args_t;
+
#endif /* __included_vrrp_packet_h__ */
/*