3903 DTrace SCTP Provider

*** 975,984 ****
--- 975,989 ----
  
                  iph->ipha_fragment_offset_and_flags = 0;
          }
  
          sctp_set_iplen(sctp, head, fp->sf_ixa);
+ 
+         DTRACE_SCTP5(send, mblk_t *, NULL, ip_xmit_attr_t *, fp->sf_ixa,
+             void_ip_t *, mp->b_rptr, sctp_t *, sctp, sctp_hdr_t *,
+             &mp->b_rptr[fp->sf_ixa->ixa_ip_hdr_length]);
+ 
          (void) conn_ip_output(head, fp->sf_ixa);
          BUMP_LOCAL(sctp->sctp_opkts);
          sctp->sctp_active = fp->sf_lastactive = ddi_get_lbolt64();
  }
  
*** 1277,1286 ****
--- 1282,1296 ----
                      "ssn %d to %p (rwnd %d, cansend %d, lastack_rxd %x)\n",
                      seglen - xtralen, ntohl(sdc->sdh_tsn),
                      ntohs(sdc->sdh_ssn), (void *)fp, sctp->sctp_frwnd,
                      cansend, sctp->sctp_lastack_rxd));
                  sctp_set_iplen(sctp, head, fp->sf_ixa);
+ 
+                 DTRACE_SCTP5(send, mblk_t *, NULL, ip_xmit_attr_t *, fp->sf_ixa,
+                     void_ip_t *, head->b_rptr, sctp_t *, sctp, sctp_hdr_t *,
+                     &head->b_rptr[fp->sf_ixa->ixa_ip_hdr_length]);
+ 
                  (void) conn_ip_output(head, fp->sf_ixa);
                  BUMP_LOCAL(sctp->sctp_opkts);
                  /* arm rto timer (if not set) */
                  if (!fp->sf_timer_running)
                          SCTP_FADDR_TIMER_RESTART(sctp, fp, fp->sf_rto);
*** 1801,1810 ****
--- 1811,1826 ----
                          fp = sctp_rotate_faddr(sctp, oldfp);
                  pkt = sctp_rexmit_packet(sctp, &meta, &mp, fp, &pkt_len);
                  if (pkt != NULL) {
                          ASSERT(pkt_len <= fp->sf_pmss);
                          sctp_set_iplen(sctp, pkt, fp->sf_ixa);
+ 
+                         DTRACE_SCTP5(send, mblk_t *, NULL,
+                             ip_xmit_attr_t *, fp->sf_ixa,
+                             void_ip_t *, mp->b_rptr, sctp_t *, sctp, sctp_hdr_t *,
+                             &mp->b_rptr[fp->sf_ixa->ixa_ip_hdr_length]);
+ 
                          (void) conn_ip_output(pkt, fp->sf_ixa);
                          BUMP_LOCAL(sctp->sctp_opkts);
                  } else {
                          SCTP_KSTAT(sctps, sctp_ss_rexmit_failed);
                  }
*** 2021,2030 ****
--- 2037,2051 ----
  
          sctp->sctp_rexmitting = B_TRUE;
          sctp->sctp_rxt_nxttsn = first_ua_tsn;
          sctp->sctp_rxt_maxtsn = sctp->sctp_ltsn - 1;
          sctp_set_iplen(sctp, head, fp->sf_ixa);
+ 
+         DTRACE_SCTP5(send, mblk_t *, NULL, ip_xmit_attr_t *, fp->sf_ixa,
+             void_ip_t *, mp->b_rptr, sctp_t *, sctp, sctp_hdr_t *,
+             &mp->b_rptr[fp->sf_ixa->ixa_ip_hdr_length]);
+ 
          (void) conn_ip_output(head, fp->sf_ixa);
          BUMP_LOCAL(sctp->sctp_opkts);
  
          /*
           * Restart the oldfp timer with exponential backoff and
*** 2305,2314 ****
--- 2326,2340 ----
                   *  Need to clear the DF bit.
                   */
                  iph->ipha_fragment_offset_and_flags = 0;
          }
          sctp_set_iplen(sctp, pkt, fp->sf_ixa);
+ 
+         DTRACE_SCTP5(send, mblk_t *, NULL, ip_xmit_attr_t *, fp->sf_ixa,
+             void_ip_t *, mp->b_rptr, sctp_t *, sctp, sctp_hdr_t *,
+             &mp->b_rptr[fp->sf_ixa->ixa_ip_hdr_length]);
+ 
          (void) conn_ip_output(pkt, fp->sf_ixa);
          BUMP_LOCAL(sctp->sctp_opkts);
  
          /* Check and see if there is more chunk to be retransmitted. */
          if (tot_wnd <= pkt_len || tot_wnd - pkt_len < fp->sf_pmss ||