sctp: use sb_avail() when accessing sb_acc for reading
This is a cleanup to simplify a patch for PR 260116. PR: 260116 MFC after: 3 days
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@ -1942,7 +1942,7 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struct sctp_association *asoc,
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* When we have NO room in the rwnd we check to make sure
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* the reader is doing its job...
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*/
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if (stcb->sctp_socket->so_rcv.sb_cc) {
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if (SCTP_SBAVAIL(&stcb->sctp_socket->so_rcv) > 0) {
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/* some to read, wake-up */
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sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
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}
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@ -381,6 +381,8 @@ typedef struct callout sctp_os_timer_t;
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#define SCTP_SORESERVE(so, send, recv) soreserve(so, send, recv)
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/* wakeup a socket */
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#define SCTP_SOWAKEUP(so) wakeup(&(so)->so_timeo)
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/* number of bytes ready to read */
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#define SCTP_SBAVAIL(sb) sbavail(sb)
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/* clear the socket buffer state */
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#define SCTP_SB_CLEAR(sb) \
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(sb).sb_cc = 0; \
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@ -11519,7 +11519,7 @@ sctp_send_packet_dropped(struct sctp_tcb *stcb, struct sctp_nets *net,
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drp->current_onq = htonl(asoc->size_on_reasm_queue +
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asoc->size_on_all_streams +
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asoc->my_rwnd_control_len +
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stcb->sctp_socket->so_rcv.sb_cc);
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SCTP_SBAVAIL(&stcb->sctp_socket->so_rcv));
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} else {
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/*-
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* If my rwnd is 0, possibly from mbuf depletion as well as
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@ -3409,7 +3409,7 @@ sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
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if ((stcb->asoc.size_on_reasm_queue > 0) ||
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(stcb->asoc.control_pdapi) ||
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(stcb->asoc.size_on_all_streams > 0) ||
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(so && (so->so_rcv.sb_cc > 0))) {
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((so != NULL) && (SCTP_SBAVAIL(&so->so_rcv) > 0))) {
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/* Left with Data unread */
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struct mbuf *op_err;
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@ -545,7 +545,7 @@ sctp_close(struct socket *so)
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if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
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inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP;
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if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
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(so->so_rcv.sb_cc > 0)) {
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(SCTP_SBAVAIL(&so->so_rcv) > 0)) {
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#ifdef SCTP_LOG_CLOSING
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sctp_log_closing(inp, NULL, 13);
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#endif
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@ -707,9 +707,8 @@ sctp_disconnect(struct socket *so)
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return (0);
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}
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NET_EPOCH_ENTER(et);
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if (((so->so_options & SO_LINGER) &&
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(so->so_linger == 0)) ||
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(so->so_rcv.sb_cc > 0)) {
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if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
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(SCTP_SBAVAIL(&so->so_rcv) > 0)) {
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if (SCTP_GET_STATE(stcb) != SCTP_STATE_COOKIE_WAIT) {
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/* Left with Data unread */
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struct mbuf *op_err;
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@ -76,7 +76,7 @@ sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
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struct sctp_cwnd_log sctp_clog;
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sctp_clog.x.sb.stcb = stcb;
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sctp_clog.x.sb.so_sbcc = sb->sb_cc;
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sctp_clog.x.sb.so_sbcc = SCTP_SBAVAIL(sb);
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if (stcb)
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sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
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else
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@ -5565,11 +5565,11 @@ sctp_sorecvmsg(struct socket *so,
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in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
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if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
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sctp_misc_ints(SCTP_SORECV_ENTER,
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rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
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rwnd_req, in_eeor_mode, SCTP_SBAVAIL(&so->so_rcv), (uint32_t)uio->uio_resid);
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}
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if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
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sctp_misc_ints(SCTP_SORECV_ENTERPL,
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rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
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rwnd_req, block_allowed, SCTP_SBAVAIL(&so->so_rcv), (uint32_t)uio->uio_resid);
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}
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error = SOCK_IO_RECV_LOCK(so, SBLOCKWAIT(in_flags));
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@ -5588,21 +5588,21 @@ sctp_sorecvmsg(struct socket *so,
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(inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
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goto out;
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}
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if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
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if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && SCTP_SBAVAIL(&so->so_rcv) == 0) {
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if (so->so_error) {
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error = so->so_error;
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if ((in_flags & MSG_PEEK) == 0)
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so->so_error = 0;
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goto out;
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} else {
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if (so->so_rcv.sb_cc == 0) {
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if (SCTP_SBAVAIL(&so->so_rcv) == 0) {
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/* indicate EOF */
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error = 0;
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goto out;
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}
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}
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}
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if (so->so_rcv.sb_cc <= held_length) {
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if (SCTP_SBAVAIL(&so->so_rcv) <= held_length) {
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if (so->so_error) {
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error = so->so_error;
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if ((in_flags & MSG_PEEK) == 0) {
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@ -5610,7 +5610,7 @@ sctp_sorecvmsg(struct socket *so,
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}
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goto out;
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}
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if ((so->so_rcv.sb_cc == 0) &&
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if ((SCTP_SBAVAIL(&so->so_rcv) == 0) &&
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((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
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(inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
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if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
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@ -5670,7 +5670,7 @@ sctp_sorecvmsg(struct socket *so,
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SCTP_INP_READ_LOCK(inp);
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}
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control = TAILQ_FIRST(&inp->read_queue);
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if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
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if ((control == NULL) && (SCTP_SBAVAIL(&so->so_rcv) > 0)) {
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#ifdef INVARIANTS
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panic("Huh, its non zero and nothing on control?");
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#endif
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@ -5805,8 +5805,8 @@ sctp_sorecvmsg(struct socket *so,
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* <or> fragment interleave is NOT on. So stuff the sb_cc
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* into the our held count, and its time to sleep again.
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*/
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held_length = so->so_rcv.sb_cc;
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control->held_length = so->so_rcv.sb_cc;
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held_length = SCTP_SBAVAIL(&so->so_rcv);
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control->held_length = SCTP_SBAVAIL(&so->so_rcv);
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goto restart;
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}
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/* Clear the held length since there is something to read */
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@ -6255,7 +6255,7 @@ sctp_sorecvmsg(struct socket *so,
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(sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
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goto release;
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}
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if (so->so_rcv.sb_cc <= control->held_length) {
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if (SCTP_SBAVAIL(&so->so_rcv) <= control->held_length) {
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error = sbwait(so, SO_RCV);
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if (error) {
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goto release;
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@ -6282,8 +6282,8 @@ sctp_sorecvmsg(struct socket *so,
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}
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goto done_with_control;
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}
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if (so->so_rcv.sb_cc > held_length) {
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control->held_length = so->so_rcv.sb_cc;
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if (SCTP_SBAVAIL(&so->so_rcv) > held_length) {
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control->held_length = SCTP_SBAVAIL(&so->so_rcv);
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held_length = 0;
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}
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goto wait_some_more;
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@ -6432,13 +6432,13 @@ sctp_sorecvmsg(struct socket *so,
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freed_so_far,
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(uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
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stcb->asoc.my_rwnd,
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so->so_rcv.sb_cc);
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SCTP_SBAVAIL(&so->so_rcv));
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} else {
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sctp_misc_ints(SCTP_SORECV_DONE,
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freed_so_far,
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(uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
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0,
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so->so_rcv.sb_cc);
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SCTP_SBAVAIL(&so->so_rcv));
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}
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}
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stage_left:
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