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authorRajesh Amaravathi <rajesh@redhat.com>2013-06-21 11:31:11 +0530
committerAnand Avati <avati@redhat.com>2013-06-21 10:33:49 -0700
commit3f72e52c936edf7d1477a69fa3a01f89e0576881 (patch)
tree633d418eef5eef2677ba8db6a1d43e13f983a14b /libglusterfs
parent4cde70a0e5be0a5e49e42c48365f3c0b205f9741 (diff)
rpc: duplicate request cache for nfs
Duplicate request cache provides a mechanism for detecting duplicate rpc requests from clients. DRC caches replies and on duplicate requests, sends the cached reply instead of re-processing the request. Change-Id: I3d62a6c4aa86c92bf61f1038ca62a1a46bf1c303 BUG: 847624 Signed-off-by: Rajesh Amaravathi <rajesh@redhat.com> Reviewed-on: http://review.gluster.org/4049 Reviewed-by: Rajesh Joseph <rjoseph@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'libglusterfs')
-rw-r--r--libglusterfs/src/common-utils.c44
-rw-r--r--libglusterfs/src/common-utils.h2
-rw-r--r--libglusterfs/src/list.h12
-rw-r--r--libglusterfs/src/mem-types.h6
4 files changed, 63 insertions, 1 deletions
diff --git a/libglusterfs/src/common-utils.c b/libglusterfs/src/common-utils.c
index 9375c5d..b44c1d0 100644
--- a/libglusterfs/src/common-utils.c
+++ b/libglusterfs/src/common-utils.c
@@ -1939,6 +1939,50 @@ out:
return ret;
}
+/**
+ * gf_sock_union_equal_addr - check if two given gf_sock_unions have same addr
+ *
+ * @param a - first sock union
+ * @param b - second sock union
+ * @return _gf_true if a and b have same ipv{4,6} addr, _gf_false otherwise
+ */
+gf_boolean_t
+gf_sock_union_equal_addr (union gf_sock_union *a,
+ union gf_sock_union *b)
+{
+ if (!a || !b) {
+ gf_log ("common-utils", GF_LOG_ERROR, "Invalid arguments"
+ " to gf_sock_union_equal_addr");
+ return _gf_false;
+ }
+
+ if (a->storage.ss_family != b->storage.ss_family)
+ return _gf_false;
+
+ switch (a->storage.ss_family) {
+ case AF_INET:
+ if (a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr)
+ return _gf_true;
+ else
+ return _gf_false;
+
+ case AF_INET6:
+ if (memcmp ((void *)(&a->sin6.sin6_addr),
+ (void *)(&b->sin6.sin6_addr),
+ sizeof (a->sin6.sin6_addr)))
+ return _gf_false;
+ else
+ return _gf_true;
+
+ default:
+ gf_log ("common-utils", GF_LOG_DEBUG,
+ "Unsupported/invalid address family");
+ break;
+ }
+
+ return _gf_false;
+}
+
/*Thread safe conversion function*/
char *
uuid_utoa (uuid_t uuid)
diff --git a/libglusterfs/src/common-utils.h b/libglusterfs/src/common-utils.h
index e119303..1fb36d6 100644
--- a/libglusterfs/src/common-utils.h
+++ b/libglusterfs/src/common-utils.h
@@ -557,6 +557,8 @@ char valid_internet_address (char *address, gf_boolean_t wildcard_acc);
char valid_ipv4_wildcard_check (char *address);
char valid_ipv6_wildcard_check (char *address);
char valid_wildcard_internet_address (char *address);
+gf_boolean_t gf_sock_union_equal_addr (union gf_sock_union *a,
+ union gf_sock_union *b);
char *uuid_utoa (uuid_t uuid);
char *uuid_utoa_r (uuid_t uuid, char *dst);
diff --git a/libglusterfs/src/list.h b/libglusterfs/src/list.h
index 35fccdf..7f3712b 100644
--- a/libglusterfs/src/list.h
+++ b/libglusterfs/src/list.h
@@ -175,4 +175,16 @@ list_append_init (struct list_head *list, struct list_head *head)
&pos->member != (head); \
pos = n, n = list_entry(n->member.next, typeof(*n), member))
+#define list_for_each_entry_reverse(pos, head, member) \
+ for (pos = list_entry((head)->prev, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+
+#define list_for_each_entry_safe_reverse(pos, n, head, member) \
+ for (pos = list_entry((head)->prev, typeof(*pos), member), \
+ n = list_entry(pos->member.prev, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = n, n = list_entry(n->member.prev, typeof(*n), member))
+
#endif /* _LLIST_H */
diff --git a/libglusterfs/src/mem-types.h b/libglusterfs/src/mem-types.h
index 015cd1a..4c78f46 100644
--- a/libglusterfs/src/mem-types.h
+++ b/libglusterfs/src/mem-types.h
@@ -104,6 +104,10 @@ enum gf_common_mem_types_ {
gf_common_mt_eh_t = 88,
gf_common_mt_store_handle_t = 89,
gf_common_mt_store_iter_t = 90,
- gf_common_mt_end = 91
+ gf_common_mt_drc_client_t = 91,
+ gf_common_mt_drc_globals_t = 92,
+ gf_common_mt_drc_rbtree_node_t = 93,
+ gf_common_mt_iov_base_t = 94,
+ gf_common_mt_end = 95,
};
#endif