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authorJohn Lo <loj@cisco.com>2018-06-19 15:27:48 -0400
committerDave Barach <openvpp@barachs.net>2018-06-19 21:26:10 +0000
commit084606befb45507e9241b5555f86196fe08530f6 (patch)
tree25982dd871832335b2f62159657c3b3b31e361f2
parent7e607a73898b81c21a24038a2350fdda3b1c67ff (diff)
Check get packet template allocation failure (VPP-1321)
After calling vlib_packet_template_get_packet(), make sure packet buffer is allocated before using it. Change-Id: Idb5199f4e2c9596137b2101e502d611f474a6ffe Signed-off-by: John Lo <loj@cisco.com>
-rw-r--r--src/plugins/cdp/cdp_periodic.c6
-rw-r--r--src/vnet/ethernet/arp.c6
-rw-r--r--src/vnet/ip/ip4_forward.c3
-rw-r--r--src/vnet/ip/ip6_forward.c2
-rw-r--r--src/vnet/ip/ip6_neighbor.c7
5 files changed, 24 insertions, 0 deletions
diff --git a/src/plugins/cdp/cdp_periodic.c b/src/plugins/cdp/cdp_periodic.c
index c67af00c7a5..a4c4bb91765 100644
--- a/src/plugins/cdp/cdp_periodic.c
+++ b/src/plugins/cdp/cdp_periodic.c
@@ -195,6 +195,9 @@ send_hdlc_hello (cdp_main_t * cm, cdp_neighbor_t * n, int count)
h0 = vlib_packet_template_get_packet
(vm, &cm->packet_templates[n->packet_template_index], &bi0);
+ if (!h0)
+ break;
+
hw = vnet_get_sup_hw_interface (vnm, n->sw_if_index);
t0 = (u8 *) & h0->cdp.data;
@@ -251,6 +254,9 @@ send_srp_hello (cdp_main_t * cm, cdp_neighbor_t * n, int count)
h0 = vlib_packet_template_get_packet
(vm, &cm->packet_templates[n->packet_template_index], &bi0);
+ if (!h0)
+ break;
+
hw = vnet_get_sup_hw_interface (vnm, n->sw_if_index);
t0 = (u8 *) & h0->cdp.data;
diff --git a/src/vnet/ethernet/arp.c b/src/vnet/ethernet/arp.c
index 37e3e88c2f2..a17f7dae02b 100644
--- a/src/vnet/ethernet/arp.c
+++ b/src/vnet/ethernet/arp.c
@@ -352,6 +352,8 @@ arp_nbr_probe (ip_adjacency_t * adj)
h =
vlib_packet_template_get_packet (vm, &im->ip4_arp_request_packet_template,
&bi);
+ if (!h)
+ return;
hi = vnet_get_sup_hw_interface (vnm, adj->rewrite_header.sw_if_index);
@@ -2579,6 +2581,10 @@ send_ip4_garp_w_addr (vlib_main_t * vm,
u32 bi = 0;
ethernet_arp_header_t *h = vlib_packet_template_get_packet
(vm, &i4m->ip4_arp_request_packet_template, &bi);
+
+ if (!h)
+ return;
+
clib_memcpy (h->ip4_over_ethernet[0].ethernet, hi->hw_address,
sizeof (h->ip4_over_ethernet[0].ethernet));
clib_memcpy (h->ip4_over_ethernet[1].ethernet, hi->hw_address,
diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index 0035cc8a552..677f88cf90c 100644
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -1960,6 +1960,9 @@ ip4_probe_neighbor (vlib_main_t * vm, ip4_address_t * dst, u32 sw_if_index,
&im->ip4_arp_request_packet_template,
&bi);
+ if (!h)
+ return clib_error_return (0, "ARP request packet allocation failed");
+
hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
if (PREDICT_FALSE (!hi->hw_address))
{
diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c
index 5ea7d8d6e9d..cf1011fa897 100644
--- a/src/vnet/ip/ip6_forward.c
+++ b/src/vnet/ip/ip6_forward.c
@@ -1476,6 +1476,8 @@ ip6_probe_neighbor (vlib_main_t * vm, ip6_address_t * dst, u32 sw_if_index,
vlib_packet_template_get_packet (vm,
&im->discover_neighbor_packet_template,
&bi);
+ if (!h)
+ return clib_error_return (0, "ICMP6 NS packet allocation failed");
hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
diff --git a/src/vnet/ip/ip6_neighbor.c b/src/vnet/ip/ip6_neighbor.c
index e281d7e1d2f..6d91224c0b4 100644
--- a/src/vnet/ip/ip6_neighbor.c
+++ b/src/vnet/ip/ip6_neighbor.c
@@ -466,6 +466,8 @@ ip6_nbr_probe (ip_adjacency_t * adj)
h = vlib_packet_template_get_packet (vm,
&im->discover_neighbor_packet_template,
&bi);
+ if (!h)
+ return;
hi = vnet_get_sup_hw_interface (vnm, adj->rewrite_header.sw_if_index);
@@ -3285,6 +3287,8 @@ ip6_discover_neighbor_inline (vlib_main_t * vm,
h0 = vlib_packet_template_get_packet
(vm, &im->discover_neighbor_packet_template, &bi0);
+ if (!h0)
+ continue;
/*
* Build ethernet header.
@@ -5037,6 +5041,9 @@ send_ip6_na_w_addr (vlib_main_t * vm,
vlib_packet_template_get_packet (vm,
&i6m->discover_neighbor_packet_template,
&bi);
+ if (!h)
+ return;
+
ip6_set_reserved_multicast_address (&h->ip.dst_address,
IP6_MULTICAST_SCOPE_link_local,
IP6_MULTICAST_GROUP_ID_all_hosts);