sctp: Follow security requirement of responding with 1 packet

[pandora-kernel.git] / net / sctp / sm_statefuns.c

diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 0c9d5a6..b66a41d 100644 (file)
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -795,8 +795,6 @@ sctp_disposition_t sctp_sf_do_5_1D_ce(const struct sctp_endpoint *ep,
                sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_START,
                                SCTP_TO(SCTP_EVENT_TIMEOUT_AUTOCLOSE));
 
-       sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
-
        /* This will send the COOKIE ACK */
        sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
 
@@ -883,7 +881,6 @@ sctp_disposition_t sctp_sf_do_5_1E_ca(const struct sctp_endpoint *ep,
        if (asoc->autoclose)
                sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_START,
                                SCTP_TO(SCTP_EVENT_TIMEOUT_AUTOCLOSE));
-       sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
 
        /* It may also notify its ULP about the successful
         * establishment of the association with a Communication Up
@@ -1781,7 +1778,6 @@ static sctp_disposition_t sctp_sf_do_dupcook_b(const struct sctp_endpoint *ep,
                goto nomem;
 
        sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
-       sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
 
        /* RFC 2960 5.1 Normal Establishment of an Association
         *
@@ -1898,12 +1894,13 @@ static sctp_disposition_t sctp_sf_do_dupcook_d(const struct sctp_endpoint *ep,
 
                }
        }
-       sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
 
        repl = sctp_make_cookie_ack(new_asoc, chunk);
        if (!repl)
                goto nomem;
 
+       sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
+
        if (ev)
                sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP,
                                SCTP_ULPEVENT(ev));
@@ -1911,9 +1908,6 @@ static sctp_disposition_t sctp_sf_do_dupcook_d(const struct sctp_endpoint *ep,
                sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP,
                                        SCTP_ULPEVENT(ai_ev));
 
-       sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
-       sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
-
        return SCTP_DISPOSITION_CONSUME;
 
 nomem:
@@ -3970,9 +3964,6 @@ sctp_disposition_t sctp_sf_unk_chunk(const struct sctp_endpoint *ep,
                return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
                break;
        case SCTP_CID_ACTION_DISCARD_ERR:
-               /* Discard the packet.  */
-               sctp_sf_pdiscard(ep, asoc, type, arg, commands);
-
                /* Generate an ERROR chunk as response. */
                hdr = unk_chunk->chunk_hdr;
                err_chunk = sctp_make_op_error(asoc, unk_chunk,
@@ -3982,6 +3973,9 @@ sctp_disposition_t sctp_sf_unk_chunk(const struct sctp_endpoint *ep,
                        sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
                                        SCTP_CHUNK(err_chunk));
                }
+
+               /* Discard the packet.  */
+               sctp_sf_pdiscard(ep, asoc, type, arg, commands);
                return SCTP_DISPOSITION_CONSUME;
                break;
        case SCTP_CID_ACTION_SKIP: