3942 inject sanity into ipadm tcp buffer size properties
3943 _snd_lowat_fraction tcp tunable has no effect
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Peng Dai <peng.dai@delphix.com>

@@ -18,10 +18,11 @@
  *
  * CDDL HEADER END
  */
 /*
  * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
  */
 /* Copyright (c) 1990 Mentat Inc. */
 
 #include <sys/types.h>
 #include <sys/stream.h>

@@ -90,11 +91,10 @@
  * Plumbing notes:
  * ICMP is always a device driver. For compatibility with mibopen() code
  * it is possible to I_PUSH "icmp", but that results in pushing a passthrough
  * dummy module.
  */
-
 static void     icmp_addr_req(queue_t *q, mblk_t *mp);
 static void     icmp_tpi_bind(queue_t *q, mblk_t *mp);
 static void     icmp_bind_proto(icmp_t *icmp);
 static int      icmp_build_hdr_template(conn_t *, const in6_addr_t *,
     const in6_addr_t *, uint32_t);

@@ -211,10 +211,26 @@
         T_CLTS,         /* SERV_type.  icmp supports connection-less. */
         TS_UNBND,       /* CURRENT_state.  This is set from icmp_state. */
         (XPG4_1|SENDZERO) /* PROVIDER_flag */
 };
 
+static int
+icmp_set_buf_prop(netstack_t *stack, cred_t *cr, mod_prop_info_t *pinfo,
+    const char *ifname, const void *pval, uint_t flags)
+{
+        return (mod_set_buf_prop(stack->netstack_icmp->is_propinfo_tbl,
+            stack, cr, pinfo, ifname, pval, flags));
+}
+
+static int
+icmp_get_buf_prop(netstack_t *stack, mod_prop_info_t *pinfo, const char *ifname,
+    void *val, uint_t psize, uint_t flags)
+{
+        return (mod_get_buf_prop(stack->netstack_icmp->is_propinfo_tbl, stack,
+            pinfo, ifname, val, psize, flags));
+}
+
 /*
  * All of these are alterable, within the min/max values given, at run time.
  *
  * Note: All those tunables which do not start with "icmp_" are Committed and
  * therefore are public. See PSARC 2010/080.

@@ -236,25 +252,25 @@
 
         { "_bsd_compat", MOD_PROTO_RAWIP,
             mod_set_boolean, mod_get_boolean,
             {B_TRUE}, {B_TRUE} },
 
-        { "send_maxbuf", MOD_PROTO_RAWIP,
-            mod_set_uint32, mod_get_uint32,
+        { "send_buf", MOD_PROTO_RAWIP,
+            icmp_set_buf_prop, icmp_get_buf_prop,
             {4096, 65536, 8192}, {8192} },
 
         { "_xmit_lowat", MOD_PROTO_RAWIP,
             mod_set_uint32, mod_get_uint32,
             {0, 65536, 1024}, {1024} },
 
-        { "recv_maxbuf", MOD_PROTO_RAWIP,
-            mod_set_uint32, mod_get_uint32,
+        { "recv_buf", MOD_PROTO_RAWIP,
+            icmp_set_buf_prop, icmp_get_buf_prop,
             {4096, 65536, 8192}, {8192} },
 
-        { "_max_buf", MOD_PROTO_RAWIP,
+        { "max_buf", MOD_PROTO_RAWIP,
             mod_set_uint32, mod_get_uint32,
-            {65536, 1024*1024*1024, 256*1024}, {256 * 1024} },
+            {65536, ULP_MAX_BUF, 256*1024}, {256*1024} },
 
         { "_pmtu_discovery", MOD_PROTO_RAWIP,
             mod_set_boolean, mod_get_boolean,
             {B_FALSE}, {B_FALSE} },