1) Use same scheme Michael and I discussed for a selected for a flowid
2) If flowid is not set, arrange so it is stored. 3) If flowid is set by lower layer, use it. MFC after: 3 Months
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parent
5aa85abd1d
commit
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=218371
@ -5946,32 +5946,32 @@ sctp_input(struct mbuf *m, int off)
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struct sctphdr *sh;
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int offset;
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int cpu_to_use;
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uint32_t tag;
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uint32_t flowid, tag;
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if (mp_ncpus > 1) {
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ip = mtod(m, struct ip *);
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offset = off + sizeof(*sh);
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if (SCTP_BUF_LEN(m) < offset) {
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if ((m = m_pullup(m, offset)) == 0) {
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SCTP_STAT_INCR(sctps_hdrops);
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return;
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}
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ip = mtod(m, struct ip *);
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}
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sh = (struct sctphdr *)((caddr_t)ip + off);
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if (sh->v_tag) {
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tag = htonl(sh->v_tag);
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if (m->m_flags & M_FLOWID) {
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flowid = m->m_pkthdr.flowid;
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} else {
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/*
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* Distribute new INIT's to all CPU's don't just
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* pick on 0.
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* No flow id built by lower layers fix it so we
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* create one.
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*/
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struct timeval tv;
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(void)SCTP_GETTIME_TIMEVAL(&tv);
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tag = (uint32_t) tv.tv_usec;
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ip = mtod(m, struct ip *);
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offset = off + sizeof(*sh);
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if (SCTP_BUF_LEN(m) < offset) {
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if ((m = m_pullup(m, offset)) == 0) {
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SCTP_STAT_INCR(sctps_hdrops);
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return;
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}
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ip = mtod(m, struct ip *);
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}
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sh = (struct sctphdr *)((caddr_t)ip + off);
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tag = htonl(sh->v_tag);
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flowid = tag ^ ntohs(sh->dest_port) ^ ntohs(sh->src_port);
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m->m_pkthdr.flowid = flowid;
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m->m_flags |= M_FLOWID;
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}
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cpu_to_use = sctp_cpuarry[tag % mp_ncpus];
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cpu_to_use = sctp_cpuarry[flowid % mp_ncpus];
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sctp_queue_to_mcore(m, off, cpu_to_use);
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return;
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}
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