diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index cccc662561aa..b21f23b736fd 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -2057,7 +2057,7 @@ struct sctp_association { force_delay:1; __u8 strreset_enable; - __u8 strreset_outstanding; /* request param count on the fly */ + __u8 strreset_outstanding; /* request param bitmask on the fly */ __u32 strreset_outseq; /* Update after receiving response */ __u32 strreset_inseq; /* Update after receiving request */ diff --git a/net/sctp/stream.c b/net/sctp/stream.c index 285cbebd899e..e4354d58f20b 100644 --- a/net/sctp/stream.c +++ b/net/sctp/stream.c @@ -22,6 +22,15 @@ #include #include +#define SCTP_STRRESET_MASK(type) \ + BIT(ntohs(type) - ntohs(SCTP_PARAM_RESET_OUT_REQUEST)) +#define SCTP_STRRESET_TEST(asoc, type) \ + ((asoc)->strreset_outstanding & SCTP_STRRESET_MASK(type)) +#define SCTP_STRRESET_SET(asoc, type) \ + ((asoc)->strreset_outstanding |= SCTP_STRRESET_MASK(type)) +#define SCTP_STRRESET_CLEAR(asoc, type) \ + ((asoc)->strreset_outstanding &= ~SCTP_STRRESET_MASK(type)) + static void sctp_stream_shrink_out(struct sctp_stream *stream, __u16 outcnt) { struct sctp_association *asoc; @@ -372,7 +381,10 @@ int sctp_send_reset_streams(struct sctp_association *asoc, goto out; } - asoc->strreset_outstanding = out + in; + if (out) + SCTP_STRRESET_SET(asoc, SCTP_PARAM_RESET_OUT_REQUEST); + if (in) + SCTP_STRRESET_SET(asoc, SCTP_PARAM_RESET_IN_REQUEST); out: return retval; @@ -417,7 +429,7 @@ int sctp_send_reset_assoc(struct sctp_association *asoc) return retval; } - asoc->strreset_outstanding = 1; + SCTP_STRRESET_SET(asoc, SCTP_PARAM_RESET_TSN_REQUEST); return 0; } @@ -474,7 +486,10 @@ int sctp_send_add_streams(struct sctp_association *asoc, goto out; } - asoc->strreset_outstanding = !!out + !!in; + if (out) + SCTP_STRRESET_SET(asoc, SCTP_PARAM_RESET_ADD_OUT_STREAMS); + if (in) + SCTP_STRRESET_SET(asoc, SCTP_PARAM_RESET_ADD_IN_STREAMS); out: return retval; @@ -564,13 +579,14 @@ struct sctp_chunk *sctp_process_strreset_outreq( if (asoc->strreset_chunk) { if (!sctp_chunk_lookup_strreset_param( asoc, outreq->response_seq, - SCTP_PARAM_RESET_IN_REQUEST, true)) { + SCTP_PARAM_RESET_IN_REQUEST, true) || + !SCTP_STRRESET_TEST(asoc, SCTP_PARAM_RESET_IN_REQUEST)) { /* same process with outstanding isn't 0 */ result = SCTP_STRRESET_ERR_IN_PROGRESS; goto out; } - asoc->strreset_outstanding--; + SCTP_STRRESET_CLEAR(asoc, SCTP_PARAM_RESET_IN_REQUEST); asoc->strreset_outseq++; if (!asoc->strreset_outstanding) { @@ -669,7 +685,7 @@ struct sctp_chunk *sctp_process_strreset_inreq( SCTP_SO(stream, i)->state = SCTP_STREAM_CLOSED; asoc->strreset_chunk = chunk; - asoc->strreset_outstanding = 1; + SCTP_STRRESET_SET(asoc, SCTP_PARAM_RESET_OUT_REQUEST); sctp_chunk_hold(asoc->strreset_chunk); result = SCTP_STRRESET_PERFORMED; @@ -816,13 +832,14 @@ struct sctp_chunk *sctp_process_strreset_addstrm_out( if (asoc->strreset_chunk) { if (!sctp_chunk_lookup_strreset_param( - asoc, 0, SCTP_PARAM_RESET_ADD_IN_STREAMS, false)) { + asoc, 0, SCTP_PARAM_RESET_ADD_IN_STREAMS, false) || + !SCTP_STRRESET_TEST(asoc, SCTP_PARAM_RESET_ADD_IN_STREAMS)) { /* same process with outstanding isn't 0 */ result = SCTP_STRRESET_ERR_IN_PROGRESS; goto out; } - asoc->strreset_outstanding--; + SCTP_STRRESET_CLEAR(asoc, SCTP_PARAM_RESET_ADD_IN_STREAMS); asoc->strreset_outseq++; if (!asoc->strreset_outstanding) { @@ -899,7 +916,7 @@ struct sctp_chunk *sctp_process_strreset_addstrm_in( goto out; asoc->strreset_chunk = chunk; - asoc->strreset_outstanding = 1; + SCTP_STRRESET_SET(asoc, SCTP_PARAM_RESET_ADD_OUT_STREAMS); sctp_chunk_hold(asoc->strreset_chunk); stream->outcnt = outcnt; @@ -929,7 +946,7 @@ struct sctp_chunk *sctp_process_strreset_resp( req = sctp_chunk_lookup_strreset_param(asoc, resp->response_seq, 0, true); - if (!req) + if (!req || !SCTP_STRRESET_TEST(asoc, req->type)) return NULL; result = ntohl(resp->result); @@ -1079,7 +1096,7 @@ struct sctp_chunk *sctp_process_strreset_resp( nums, 0, GFP_ATOMIC); } - asoc->strreset_outstanding--; + SCTP_STRRESET_CLEAR(asoc, req->type); asoc->strreset_outseq++; /* remove everything for this reconf request */