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authorAndrew Yourtchenko <ayourtch@gmail.com>2017-08-08 20:10:12 +0200
committerNeale Ranns <nranns@cisco.com>2017-08-10 13:56:31 +0000
commitef5dd4f2aec6df1b58aa8d07493acf486eccf802 (patch)
treeefe67ac8e347936b78011de27616a64c486979e3
parentfa3eb7a993fe7538c51360960ef92dced0562342 (diff)
acl-plugin: avoid crash in multithreaded setup adding/deleting ACLs with traffic (VPP-910/VPP-929)
The commit fixing the VPP-910 and separating the memory operations into separate heaps has missed setting the MHEAP_FLAG_THREAD_SAFE, which quite obviously caused the issues in the multithread setup. Fix that. Also, add the debug CLIs "set acl-plugin heap {main|hash} {validate|trace} {1|0}" to toggle the memory instrumentation, in case we ever need it in the future. Change-Id: I8bd4f7978613f5ea75a030cfb90674dac34ae7bf Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com> (cherry picked from commit e6423bef32ca2ffcfcd7a092eb4673badd53ea4c)
-rw-r--r--src/plugins/acl/acl.c50
-rw-r--r--src/plugins/acl/hash_lookup.c29
-rw-r--r--src/plugins/acl/hash_lookup.h4
3 files changed, 83 insertions, 0 deletions
diff --git a/src/plugins/acl/acl.c b/src/plugins/acl/acl.c
index 70dc8c634db..80ef56613d4 100644
--- a/src/plugins/acl/acl.c
+++ b/src/plugins/acl/acl.c
@@ -91,11 +91,39 @@ acl_set_heap(acl_main_t *am)
{
if (0 == am->acl_mheap) {
am->acl_mheap = mheap_alloc (0 /* use VM */ , 2 << 29);
+ mheap_t *h = mheap_header (am->acl_mheap);
+ h->flags |= MHEAP_FLAG_THREAD_SAFE;
}
void *oldheap = clib_mem_set_heap(am->acl_mheap);
return oldheap;
}
+void
+acl_plugin_acl_set_validate_heap(acl_main_t *am, int on)
+{
+ clib_mem_set_heap(acl_set_heap(am));
+ mheap_t *h = mheap_header (am->acl_mheap);
+ if (on) {
+ h->flags |= MHEAP_FLAG_VALIDATE;
+ h->flags &= ~MHEAP_FLAG_SMALL_OBJECT_CACHE;
+ mheap_validate(h);
+ } else {
+ h->flags &= ~MHEAP_FLAG_VALIDATE;
+ h->flags |= MHEAP_FLAG_SMALL_OBJECT_CACHE;
+ }
+}
+
+void
+acl_plugin_acl_set_trace_heap(acl_main_t *am, int on)
+{
+ clib_mem_set_heap(acl_set_heap(am));
+ mheap_t *h = mheap_header (am->acl_mheap);
+ if (on) {
+ h->flags |= MHEAP_FLAG_TRACE;
+ } else {
+ h->flags &= ~MHEAP_FLAG_TRACE;
+ }
+}
static void
vl_api_acl_plugin_get_version_t_handler (vl_api_acl_plugin_get_version_t * mp)
@@ -1930,6 +1958,8 @@ acl_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
VNET_SW_INTERFACE_ADD_DEL_FUNCTION (acl_sw_interface_add_del);
+
+
static clib_error_t *
acl_set_aclplugin_fn (vlib_main_t * vm,
unformat_input_t * input,
@@ -1958,6 +1988,26 @@ acl_set_aclplugin_fn (vlib_main_t * vm,
am->l4_match_nonfirst_fragment = (val != 0);
goto done;
}
+ if (unformat (input, "heap"))
+ {
+ if (unformat(input, "main"))
+ {
+ if (unformat(input, "validate %u", &val))
+ acl_plugin_acl_set_validate_heap(am, val);
+ else if (unformat(input, "trace %u", &val))
+ acl_plugin_acl_set_trace_heap(am, val);
+ goto done;
+ }
+ else if (unformat(input, "hash"))
+ {
+ if (unformat(input, "validate %u", &val))
+ acl_plugin_hash_acl_set_validate_heap(am, val);
+ else if (unformat(input, "trace %u", &val))
+ acl_plugin_hash_acl_set_trace_heap(am, val);
+ goto done;
+ }
+ goto done;
+ }
if (unformat (input, "session")) {
if (unformat (input, "table")) {
/* The commands here are for tuning/testing. No user-serviceable parts inside */
diff --git a/src/plugins/acl/hash_lookup.c b/src/plugins/acl/hash_lookup.c
index a337eb84586..ae522d921cc 100644
--- a/src/plugins/acl/hash_lookup.c
+++ b/src/plugins/acl/hash_lookup.c
@@ -269,12 +269,41 @@ hash_acl_set_heap(acl_main_t *am)
{
if (0 == am->hash_lookup_mheap) {
am->hash_lookup_mheap = mheap_alloc (0 /* use VM */ , 2 << 25);
+ mheap_t *h = mheap_header (am->hash_lookup_mheap);
+ h->flags |= MHEAP_FLAG_THREAD_SAFE;
}
void *oldheap = clib_mem_set_heap(am->hash_lookup_mheap);
return oldheap;
}
void
+acl_plugin_hash_acl_set_validate_heap(acl_main_t *am, int on)
+{
+ clib_mem_set_heap(hash_acl_set_heap(am));
+ mheap_t *h = mheap_header (am->hash_lookup_mheap);
+ if (on) {
+ h->flags |= MHEAP_FLAG_VALIDATE;
+ h->flags &= ~MHEAP_FLAG_SMALL_OBJECT_CACHE;
+ mheap_validate(h);
+ } else {
+ h->flags &= ~MHEAP_FLAG_VALIDATE;
+ h->flags |= MHEAP_FLAG_SMALL_OBJECT_CACHE;
+ }
+}
+
+void
+acl_plugin_hash_acl_set_trace_heap(acl_main_t *am, int on)
+{
+ clib_mem_set_heap(hash_acl_set_heap(am));
+ mheap_t *h = mheap_header (am->hash_lookup_mheap);
+ if (on) {
+ h->flags |= MHEAP_FLAG_TRACE;
+ } else {
+ h->flags &= ~MHEAP_FLAG_TRACE;
+ }
+}
+
+void
hash_acl_apply(acl_main_t *am, u32 sw_if_index, u8 is_input, int acl_index)
{
int i;
diff --git a/src/plugins/acl/hash_lookup.h b/src/plugins/acl/hash_lookup.h
index c5913624f81..2d7058e80ee 100644
--- a/src/plugins/acl/hash_lookup.h
+++ b/src/plugins/acl/hash_lookup.h
@@ -57,4 +57,8 @@ hash_multi_acl_match_5tuple (u32 sw_if_index, fa_5tuple_t * pkt_5tuple, int is_l
*/
void show_hash_acl_hash(vlib_main_t * vm, acl_main_t *am, u32 verbose);
+/* Debug functions to turn validate/trace on and off */
+void acl_plugin_hash_acl_set_validate_heap(acl_main_t *am, int on);
+void acl_plugin_hash_acl_set_trace_heap(acl_main_t *am, int on);
+
#endif