slirp: Fix queue walking in if_start

Another attempt to get this right: We need to carefully walk both the
fastq and the batchq in if_start while trying to send packets to
possibly not yet resolved hosts on the virtual network.

So far we just requeued a delayed packet where it was and then started
walking the queues from the top again - that couldn't work. Now we pre-
calculate the next packet in the queue so that the current one can
safely be removed if it was sent successfully. We also need to take into
account that the next packet can be from the same session if the current
one was sent and there are no other sessions.

CC: Fabien Chouteau <chouteau@adacore.com>
CC: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
CC: Stefan Weil <sw@weilnetz.de>
Tested-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
1 file changed
tree: fd4c5a6b793aed333d05cc859ca9f19acaf9d1a2
  1. audio/
  2. block/
  3. bsd-user/
  4. darwin-user/
  5. default-configs/
  6. docs/
  7. fpu/
  8. fsdev/
  9. gdb-xml/
  10. hw/
  11. include/
  12. libcacard/
  13. linux-headers/
  14. linux-user/
  15. net/
  16. pc-bios/
  17. qapi/
  18. qga/
  19. QMP/
  20. qom/
  21. roms/
  22. scripts/
  23. slirp/
  24. sysconfigs/
  25. target-alpha/
  26. target-arm/
  27. target-cris/
  28. target-i386/
  29. target-lm32/
  30. target-m68k/
  31. target-microblaze/
  32. target-mips/
  33. target-ppc/
  34. target-s390x/
  35. target-sh4/
  36. target-sparc/
  37. target-unicore32/
  38. target-xtensa/
  39. tcg/
  40. tests/
  41. trace/
  42. ui/
  43. .gitignore
  44. .gitmodules
  45. .mailmap
  46. a.out.h
  47. acl.c
  48. acl.h
  49. aes.c
  50. aes.h
  51. aio.c
  52. alpha-dis.c
  53. alpha.ld
  54. arch_init.c
  55. arch_init.h
  56. arm-dis.c
  57. arm-semi.c
  58. arm.ld
  59. async.c
  60. balloon.c
  61. balloon.h
  62. bitmap.c
  63. bitmap.h
  64. bitops.c
  65. bitops.h
  66. block-migration.c
  67. block-migration.h
  68. block.c
  69. block.h
  70. block_int.h
  71. blockdev.c
  72. blockdev.h
  73. bswap.h
  74. bt-host.c
  75. bt-host.h
  76. bt-vhci.c
  77. buffered_file.c
  78. buffered_file.h
  79. cache-utils.c
  80. cache-utils.h
  81. Changelog
  82. check-qdict.c
  83. check-qfloat.c
  84. check-qint.c
  85. check-qjson.c
  86. check-qlist.c
  87. check-qstring.c
  88. cmd.c
  89. cmd.h
  90. CODING_STYLE
  91. compatfd.c
  92. compatfd.h
  93. compiler.h
  94. config.h
  95. configure
  96. console.c
  97. console.h
  98. COPYING
  99. COPYING.LIB
  100. coroutine-gthread.c
  101. coroutine-sigaltstack.c
  102. coroutine-ucontext.c
  103. coroutine-win32.c
  104. cpu-all.h
  105. cpu-common.h
  106. cpu-defs.h
  107. cpu-exec.c
  108. cpus.c
  109. cpus.h
  110. cris-dis.c
  111. cursor.c
  112. cursor_hidden.xpm
  113. cursor_left_ptr.xpm
  114. cutils.c
  115. def-helper.h
  116. device_tree.c
  117. device_tree.h
  118. dis-asm.h
  119. disas.c
  120. disas.h
  121. dma-helpers.c
  122. dma.h
  123. dyngen-exec.h
  124. elf.h
  125. envlist.c
  126. envlist.h
  127. error.c
  128. error.h
  129. error_int.h
  130. event_notifier.c
  131. event_notifier.h
  132. exec-all.h
  133. exec-memory.h
  134. exec-obsolete.h
  135. exec.c
  136. gdbstub.c
  137. gdbstub.h
  138. gen-icount.h
  139. HACKING
  140. hmp-commands.hx
  141. hmp.c
  142. hmp.h
  143. host-utils.c
  144. host-utils.h
  145. hppa-dis.c
  146. hppa.ld
  147. i386-dis.c
  148. i386.ld
  149. ia64-dis.c
  150. ia64.ld
  151. input.c
  152. int128.h
  153. iohandler.c
  154. ioport-user.c
  155. ioport.c
  156. ioport.h
  157. iorange.h
  158. iov.c
  159. iov.h
  160. json-lexer.c
  161. json-lexer.h
  162. json-parser.c
  163. json-parser.h
  164. json-streamer.c
  165. json-streamer.h
  166. kvm-all.c
  167. kvm-stub.c
  168. kvm.h
  169. libfdt_env.h
  170. LICENSE
  171. linux-aio.c
  172. m68k-dis.c
  173. m68k-semi.c
  174. m68k.ld
  175. main-loop.c
  176. main-loop.h
  177. MAINTAINERS
  178. Makefile
  179. Makefile.dis
  180. Makefile.hw
  181. Makefile.objs
  182. Makefile.target
  183. Makefile.user
  184. memory.c
  185. memory.h
  186. microblaze-dis.c
  187. migration-exec.c
  188. migration-fd.c
  189. migration-tcp.c
  190. migration-unix.c
  191. migration.c
  192. migration.h
  193. mips-dis.c
  194. mips.ld
  195. module.c
  196. module.h
  197. monitor.c
  198. monitor.h
  199. nbd.c
  200. nbd.h
  201. net.c
  202. net.h
  203. notify.c
  204. notify.h
  205. os-posix.c
  206. os-win32.c
  207. osdep.c
  208. osdep.h
  209. oslib-posix.c
  210. oslib-win32.c
  211. path.c
  212. pci-ids.txt
  213. pflib.c
  214. pflib.h
  215. poison.h
  216. posix-aio-compat.c
  217. ppc-dis.c
  218. ppc.ld
  219. ppc64.ld
  220. qapi-schema-guest.json
  221. qapi-schema-test.json
  222. qapi-schema.json
  223. qbool.c
  224. qbool.h
  225. qdict-test-data.txt
  226. qdict.c
  227. qdict.h
  228. qemu-aio.h
  229. qemu-barrier.h
  230. qemu-bridge-helper.c
  231. qemu-char.c
  232. qemu-char.h
  233. qemu-common.h
  234. qemu-config.c
  235. qemu-config.h
  236. qemu-coroutine-int.h
  237. qemu-coroutine-io.c
  238. qemu-coroutine-lock.c
  239. qemu-coroutine-sleep.c
  240. qemu-coroutine.c
  241. qemu-coroutine.h
  242. qemu-doc.texi
  243. qemu-error.c
  244. qemu-error.h
  245. qemu-file.h
  246. qemu-ga.c
  247. qemu-img-cmds.hx
  248. qemu-img.c
  249. qemu-img.texi
  250. qemu-io.c
  251. qemu-lock.h
  252. qemu-log.h
  253. qemu-nbd.c
  254. qemu-nbd.texi
  255. qemu-objects.h
  256. qemu-option.c
  257. qemu-option.h
  258. qemu-options-wrapper.h
  259. qemu-options.h
  260. qemu-options.hx
  261. qemu-os-posix.h
  262. qemu-os-win32.h
  263. qemu-progress.c
  264. qemu-queue.h
  265. qemu-sockets.c
  266. qemu-tech.texi
  267. qemu-thread-posix.c
  268. qemu-thread-posix.h
  269. qemu-thread-win32.c
  270. qemu-thread-win32.h
  271. qemu-thread.h
  272. qemu-timer-common.c
  273. qemu-timer.c
  274. qemu-timer.h
  275. qemu-tls.h
  276. qemu-tool.c
  277. qemu-x509.h
  278. qemu-xattr.h
  279. qemu.sasl
  280. qemu_socket.h
  281. qerror.c
  282. qerror.h
  283. qfloat.c
  284. qfloat.h
  285. qint.c
  286. qint.h
  287. qjson.c
  288. qjson.h
  289. qlist.c
  290. qlist.h
  291. qmp-commands.hx
  292. qmp.c
  293. qobject.h
  294. qstring.c
  295. qstring.h
  296. range.h
  297. readline.c
  298. readline.h
  299. README
  300. rules.mak
  301. s390-dis.c
  302. s390.ld
  303. savevm.c
  304. sh4-dis.c
  305. softmmu-semi.h
  306. softmmu_defs.h
  307. softmmu_exec.h
  308. softmmu_header.h
  309. softmmu_template.h
  310. sparc-dis.c
  311. sparc.ld
  312. sparc64.ld
  313. spice-qemu-char.c
  314. sysemu.h
  315. targphys.h
  316. tcg-runtime.c
  317. tci-dis.c
  318. tci.c
  319. test-coroutine.c
  320. test-qmp-commands.c
  321. test-qmp-input-visitor.c
  322. test-qmp-output-visitor.c
  323. test-string-input-visitor.c
  324. test-string-output-visitor.c
  325. thunk.c
  326. thunk.h
  327. TODO
  328. trace-events
  329. translate-all.c
  330. uboot_image.h
  331. usb-bsd.c
  332. usb-linux.c
  333. usb-redir.c
  334. usb-stub.c
  335. user-exec.c
  336. VERSION
  337. version.rc
  338. vgafont.h
  339. vl.c
  340. vmstate.h
  341. x86_64.ld
  342. xen-all.c
  343. xen-mapcache.c
  344. xen-mapcache.h
  345. xen-stub.c
  346. xtensa-semi.c