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Viktor Tsymbalyuk gerrit-no-reply at lists.osmocom.orgPatch Set 1: some debug below - just for time saving. ## stop on Breakpoint after sending packet into tun0 - ipm->pdp null as result gtp_data_req not executed ``` Breakpoint 1, cb_tun_ind (tun=<optimized out>, pack=0x7fffffffbe40, len=1028) at sgsnemu.c:1367 1367 if (ipm->pdp) /* Check if a peer protocol is defined */ (gdb) (gdb) print ipm->pdp $1 = (struct pdp_t *) 0x0 (gdb) list 1362 printf("Dropping packet from invalid source address: %s\n", 1363 in46a_ntoa(&src)); 1364 return 0; 1365 } 1366 1367 if (ipm->pdp) /* Check if a peer protocol is defined */ 1368 gtp_data_req(gsn, ipm->pdp, pack, len); 1369 return 0; 1370 } 1371 ``` ## new run Breakpoint in create_pdp_conf ``` Breakpoint 5, create_pdp_conf (cause=<optimized out>, cbp=0x6145a0 <iparr>, pdp=0x7ffff79be2e0 <pdpa>) at sgsnemu.c:1465 1465 ipset((struct iphash_t *)pdp->peer, &addr); (gdb) (gdb) (gdb) (gdb) (gdb) list 1460 } 1461 free(accept_ra); 1462 free(forwarding); 1463 } 1464 1465 ipset((struct iphash_t *)pdp->peer, &addr); 1466 1467 state = 2; /* Connected */ 1468 1469 return 0; (gdb) s ipset (addr=0x7fffffffb500, ipaddr=0x7ffff79be300 <pdpa+32>) at sgsnemu.c:172 172 int hash = ippool_hash(addr) % MAXCONTEXTS; (gdb) n 176 ipaddr->addr = *addr; (gdb) print hash $5 = 165 (gdb) n 177 for (h = iphash[hash]; h; h = h->ipnext) (gdb) n 175 ipaddr->ipnext = NULL; (gdb) n 176 ipaddr->addr = *addr; (gdb) n 177 for (h = iphash[hash]; h; h = h->ipnext) (gdb) n create_pdp_conf (cause=<optimized out>, cbp=0x6145a0 <iparr>, pdp=0x7ffff79be2e0 <pdpa>) at sgsnemu.c:1465 1465 ipset((struct iphash_t *)pdp->peer, &addr); (gdb) print iphash[165] $7 = (struct iphash_t *) 0x0 (gdb) n 1467 state = 2; /* Connected */ ``` - as result of `struct iphash_t *)pdp->peer` casting in *iphash[165] we has pdp = 0x0 ``` (gdb) print *iphash[165] $9 = {inuse = 160 '\240', ipnext = 0x0, pdp = 0x0, addr = {len = 4 '\004', {v4 = {s_addr = 67112970}, v6 = {__in6_u = { __u6_addr8 = "\n\020\000\004mQ{\367\377\177\000\000\377\000\000", __u6_addr16 = {4106, 1024, 20845, 63355, 32767, 0, 255, 0}, __u6_addr32 = {67112970, 4152054125, 32767, 255}}}}}} (gdb) ``` -- To view, visit https://gerrit.osmocom.org/6385 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: comment Gerrit-Change-Id: Icd58450548b3a47cb933d70a2e3166c067552b2c Gerrit-PatchSet: 1 Gerrit-Project: osmo-ggsn Gerrit-Branch: master Gerrit-Owner: Viktor Tsymbalyuk <viktor.tsymbalyuk at gmail.com> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: Pau Espin Pedrol <pespin at sysmocom.de> Gerrit-Reviewer: Viktor Tsymbalyuk <viktor.tsymbalyuk at gmail.com> Gerrit-HasComments: No