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authorDave Barach <dave@barachs.net>2017-10-10 17:53:14 -0400
committerFlorin Coras <florin.coras@gmail.com>2017-10-13 20:20:09 +0000
commit6545716c073c88ad86458620c6dbc59ba1cd00bb (patch)
tree2bd8b7d9cd0e221669081aba27786e1ce5eee964 /src/vnet/udp
parent7e550693dffd368b9dd8e0397674cfc4d10f9579 (diff)
VPP-1027: DNS name resolver
This patch is a plausible first-cut, suitable for initial testing by vcl (host stack client library). Main features; - recursive name resolution - multiple ip4/ip6 name servers - cache size limit enforcement - currently limited to 65K - ttl / aging - static mapping support - show / clear / debug CLI commands Binary APIs provided for the following: - add/delete name servers - enable/disable the name cache - resolve a name To Do list: - Respond to ip4/ip6 client DNS requests (vs. binary API requests) - Perf / scale tuning - map pending transaction ids to pool indices, so the cache can (greatly) exceed 65K entries - Security improvements - Use unpredictable dns transaction IDs, related to previous item - Make sure that response-packet src ip addresses match the server - Add binary APIs - deliver raw response data to clients - control recursive name resolution - Documentation Change-Id: I48c373d5c05d7108ccd814d4055caf8c75ca10b7 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vnet/udp')
-rw-r--r--src/vnet/udp/udp.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/vnet/udp/udp.h b/src/vnet/udp/udp.h
index dae611cc418..aa37701106c 100644
--- a/src/vnet/udp/udp.h
+++ b/src/vnet/udp/udp.h
@@ -78,6 +78,7 @@ typedef enum
} udp_error_t;
#define foreach_udp4_dst_port \
+_ (53, dns) \
_ (67, dhcp_to_server) \
_ (68, dhcp_to_client) \
_ (500, ikev2) \
@@ -91,10 +92,12 @@ _ (4789, vxlan) \
_ (4789, vxlan6) \
_ (4790, VXLAN_GPE) \
_ (6633, vpath_3) \
-_ (6081, geneve)
+_ (6081, geneve) \
+_ (53053, dns_reply)
#define foreach_udp6_dst_port \
+_ (53, dns6) \
_ (547, dhcpv6_to_server) \
_ (546, dhcpv6_to_client) \
_ (2152, GTPU6) \
@@ -104,7 +107,8 @@ _ (4341, lisp_gpe6) \
_ (4342, lisp_cp6) \
_ (4790, VXLAN6_GPE) \
_ (6633, vpath6_3) \
-_ (6081, geneve6)
+_ (6081, geneve6) \
+_ (53053, dns_reply6)
typedef enum
{