Thanks Ben. It works. Just a small typo in your patch. + port->pp.state = ((port->pp.state & ~OFPUTIL_PS_LINK_DOWN) + | (pp->state & OFPUTIL_PS_LINK_DOWN));
Can you please tell me how is the ofproto_modified() function is called(what is the event which triggers this). Thanks, -Vasu On Wed, Feb 19, 2014 at 2:45 PM, Ben Pfaff <[email protected]> wrote: > On Mon, Feb 17, 2014 at 06:58:58PM -0500, Vasu Dasari wrote: > > On debugging this issue further, I found that, ofproto's STP state bits > are > > getting updated correctly because of following call stack: > > > > #0 ofproto_port_set_state (port=0x82395c0, state=OFPUTIL_PS_STP_FORWARD) > > at ../ofproto/ofproto.c:2267 > > #1 0x0806d659 in update_stp_port_state (ofport=0x82395b8) > > at ../ofproto/ofproto-dpif.c:1866 > > #2 0x0806da37 in stp_run (ofproto=0x822c628) at > > ../ofproto/ofproto-dpif.c:1969 > > #3 0x0806c1ba in run (ofproto_=0x822c630) at > ../ofproto/ofproto-dpif.c:1286 > > #4 0x0805d51f in ofproto_run (p=0x822c630) at ../ofproto/ofproto.c:1429 > > #5 0x08050ece in bridge_run__ () at ../vswitchd/bridge.c:2275 > > #6 0x08051032 in bridge_run () at ../vswitchd/bridge.c:2326 > > #7 0x08055a99 in main (argc=4, argv=0xbffff224) at > > ../vswitchd/ovs-vswitchd.c:118 > > > > but the same STP state is getting overwritten by following call stack, > at a > > later point in time: > > > > #0 ofport_modified (port=0x822c290, pp=0xbfffefb4) at > > ../ofproto/ofproto.c:2244 > > #1 0x0805f887 in update_port (ofproto=0x821f090, name=0x8200958 > > "atl0-eth2") > > at ../ofproto/ofproto.c:2423 > > #2 0x0805d867 in ofproto_run (p=0x821f090) at ../ofproto/ofproto.c:1495 > > #3 0x08050ece in bridge_run__ () at ../vswitchd/bridge.c:2275 > > #4 0x08051032 in bridge_run () at ../vswitchd/bridge.c:2326 > > #5 0x08055a99 in main (argc=4, argv=0xbffff224) at > > ../vswitchd/ovs-vswitchd.c:118 > > > > This is the reason why, I am seeing the "state to be 0". > > It looks very much to me like ofport_modified() simply shouldn't be > messing around with any of the state bits other than > OFPUTIL_PS_LINK_DOWN. Can you try this patch? If it solves the > problem I'll write it up properly. > > diff --git a/ofproto/ofproto.c b/ofproto/ofproto.c > index 48e10ca..f544c68 100644 > --- a/ofproto/ofproto.c > +++ b/ofproto/ofproto.c > @@ -2244,7 +2244,8 @@ ofport_modified(struct ofport *port, struct > ofputil_phy_port *pp) > memcpy(port->pp.hw_addr, pp->hw_addr, ETH_ADDR_LEN); > port->pp.config = ((port->pp.config & ~OFPUTIL_PC_PORT_DOWN) > | (pp->config & OFPUTIL_PC_PORT_DOWN)); > - port->pp.state = pp->state; > + port->pp.state = ((port->ps.state & ~OFPUTIL_PS_LINK_DOWN) > + | (pp->state & OFPUTIL_PS_LINK_DOWN)); > port->pp.curr = pp->curr; > port->pp.advertised = pp->advertised; > port->pp.supported = pp->supported; >
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