datapath/nx_msg.c

   1 /*
   2  * Distributed under the terms of the GNU GPL version 2.
   3  * Copyright (c) 2008 Nicira Networks
   4  */
   5
   6 #include "chain.h"
   7 #include "datapath.h"
   8 #include "openflow/nicira-ext.h"
   9 #include "nx_act_snat.h"
  10 #include "nx_msg.h"
  11
  12
  13 int
  14 nx_recv_msg(struct sw_chain *chain, const struct sender *sender,
  15                 const void *msg)
  16 {
  17         const struct nicira_header *nh = msg;
  18
  19         switch (ntohl(nh->subtype)) {
  20
  21         case NXT_FLOW_END_CONFIG: {
  22                 const struct nx_flow_end_config *nfec = msg;
  23                 chain->dp->send_flow_end = nfec->enable;
  24                 return 0;
  25         }
  26
  27 #ifdef SUPPORT_SNAT
  28         case NXT_ACT_SET_CONFIG: {
  29                 const struct nx_act_config *nac = msg;
  30                 if (ntohs(nh->header.length) < sizeof(*nac))
  31                         return -EINVAL;
  32
  33                 if (nac->type == htons(NXAST_SNAT))
  34                         return snat_mod_config(chain->dp, nac);
  35                 else
  36                         return -EINVAL;
  37                 break;
  38         }
  39 #endif
  40
  41         default:
  42                 dp_send_error_msg(chain->dp, sender, OFPET_BAD_REQUEST,
  43                                   OFPBRC_BAD_SUBTYPE, msg, ntohs(nh->header.length));
  44                 return -EINVAL;
  45         }
  46
  47         return -EINVAL;
  48 }