diff options
| author |   Andrew Yourtchenko <ayourtch@gmail.com> | 2017-01-28 15:31:19 +0000 |
|---|---|---|
| committer |   Neale Ranns <nranns@cisco.com> | 2017-01-30 19:52:53 +0000 |
| commit | 61459c9be0f620f738cf049b1b33e1a2d13dc9a6 (patch) | |
| tree | 21932acc828c09e8b9b00ed1d8587d2b94a45224 /src/vnet/ip/ping.c | |
| parent | d03798c4eb860c30945c4ce881d2889a43ed4a93 (diff) | |
VPP-621: ping: ICMP echo data size must be bounded by VLIB_BUFFER_DATA_SIZE minus headers.
Before the commit 878c6098 the VLIB_BUFFER_DATA_SIZE was different depending
on whether building "vpp" or "vpp_lite", resulting in an overrun in vpp_lite build.
Avoid the hardcoded value and make the upper bound for ICMP echo data size
dependent on the buffer size.
Change-Id: Id6c4d7fc73766a95af2610eb237881b5fe9ce9aa
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
Diffstat (limited to 'src/vnet/ip/ping.c')
| -rw-r--r-- | src/vnet/ip/ping.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/src/vnet/ip/ping.c b/src/vnet/ip/ping.c index 88882629426..00e2bfb18e2 100644 --- a/src/vnet/ip/ping.c +++ b/src/vnet/ip/ping.c @@ -13,6 +13,7 @@ * limitations under the License. */ +#include <stddef.h> #include <vnet/ip/ping.h> #include <vnet/fib/ip6_fib.h> #include <vnet/fib/ip4_fib.h> @@ -243,15 +244,10 @@ init_icmp46_echo_request (icmp46_echo_request_t * icmp46_echo, icmp46_echo->seq = clib_host_to_net_u16 (seq_host); icmp46_echo->id = clib_host_to_net_u16 (id_host); - for (i = 0; i < sizeof (icmp46_echo->data); i++) - { - icmp46_echo->data[i] = i % 256; - } - - if (data_len > sizeof (icmp46_echo_request_t)) - { - data_len = sizeof (icmp46_echo_request_t); - } + if (data_len > PING_MAXIMUM_DATA_SIZE) + data_len = PING_MAXIMUM_DATA_SIZE; + for (i = 0; i < data_len; i++) + icmp46_echo->data[i] = i % 256; return data_len; } @@ -267,11 +263,15 @@ send_ip6_ping (vlib_main_t * vm, ip6_main_t * im, vlib_buffer_t *p0; vlib_frame_t *f; u32 *to_next; + vlib_buffer_free_list_t *fl; if (vlib_buffer_alloc (vm, &bi0, 1) != 1) return SEND_PING_ALLOC_FAIL; p0 = vlib_get_buffer (vm, bi0); + fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); + vlib_buffer_init_for_free_list (p0, fl); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (p0); /* * if the user did not provide a source interface, use the any interface @@ -376,11 +376,15 @@ send_ip4_ping (vlib_main_t * vm, vlib_frame_t *f; u32 *to_next; u32 if_add_index0; + vlib_buffer_free_list_t *fl; if (vlib_buffer_alloc (vm, &bi0, 1) != 1) return SEND_PING_ALLOC_FAIL; p0 = vlib_get_buffer (vm, bi0); + fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); + vlib_buffer_init_for_free_list (p0, fl); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (p0); /* * if the user did not provide a source interface, use the any interface @@ -759,6 +763,14 @@ ping_ip_address (vlib_main_t * vm, format_unformat_error, input); goto done; } + if (data_len > PING_MAXIMUM_DATA_SIZE) + { + error = + clib_error_return (0, + "%d is bigger than maximum allowed payload size %d", + data_len, PING_MAXIMUM_DATA_SIZE); + goto done; + } } else if (unformat (input, "table-id")) { |