Annotation of fwsync/driver/fwsync_mod.c, revision 1.1
1.1 ! misho 1: /*************************************************************************
! 2: * (C) 2022 CloudSigma AG - Sofia/Bulgaria
! 3: * by Michael Pounov <misho@elwix.org>
! 4: **************************************************************************/
! 5: #include "fwsync.h"
! 6:
! 7:
! 8: MALLOC_DEFINE(M_FWSYNC, "fwsync_memory", "FWSync - memory");
! 9:
! 10: static struct ipfw_sopt_handler soc[] = {
! 11: { IP_FW_SYNC_XCONFIG, 0, HDIR_SET, fwsync_cfg },
! 12: { IP_FW_SYNC_DESTROY, 0, HDIR_SET, fwsync_destroy },
! 13: { IP_FW_SYNC_XGETCONFIG, 0, HDIR_GET, fwsync_get_cfg },
! 14: { IP_FW_SYNC_LIST, 0, HDIR_GET, fwsync_list },
! 15: { IP_FW_SYNC_START, 0, HDIR_SET, fwsync_start },
! 16: { IP_FW_SYNC_STOP, 0, HDIR_SET, fwsync_stop },
! 17: };
! 18:
! 19: static volatile int fwsync_hooked = 0;
! 20: struct fwsync_context fws_ctx = { 0 };
! 21: int fwsync_debug = DRV_DEBUG;
! 22: static struct sysctl_ctx_list fwsync_sysctl_ctx;
! 23: struct cfg_sync fws_cfg;
! 24: //static struct sysctl_oid *fws_sysctl_oid, *fws_sysctl_dir;
! 25:
! 26: struct task fws_sndpkt_task;
! 27:
! 28: SYSCTL_NODE(_net_inet_ip, IFT_FWSYNC, fwsync, CTLFLAG_RW, 0, "IPFW Sync - Sync firewall states");
! 29: SYSCTL_INT(_net_inet_ip_fwsync, OID_AUTO, debug, CTLFLAG_RW, &fwsync_debug, 0, "Debug driver");
! 30:
! 31: static int
! 32: fws_fini(void *arg)
! 33: {
! 34: DTRACE();
! 35:
! 36: if (!fwsync_hooked)
! 37: return EBUSY;
! 38:
! 39: if (fws_cfg.cfg.on || fws_ctx.config) {
! 40: uprintf("Unable to unload ELWIX %s driver, cause you have active configuration.\n"
! 41: "Before unload driver flush configuration!\n", DRV_NAME);
! 42: return EBUSY;
! 43: }
! 44:
! 45: IPFW_DEL_SOPT_HANDLER(1, soc);
! 46:
! 47: fwsync_hooked = 0;
! 48:
! 49: /* sysctl context */
! 50: sysctl_ctx_free(&fwsync_sysctl_ctx);
! 51:
! 52: uprintf("Unloaded ELWIX %s driver version %d ...\n", DRV_NAME, DRV_VERSION);
! 53: return 0;
! 54: }
! 55:
! 56: static int
! 57: fws_shut(void *arg)
! 58: {
! 59: DTRACE();
! 60:
! 61: fws_fini(arg);
! 62:
! 63: return 0;
! 64: }
! 65:
! 66: static int
! 67: fws_init(void *arg)
! 68: {
! 69: DTRACE();
! 70:
! 71: if (fwsync_hooked)
! 72: return 0;
! 73:
! 74: memset(&fws_cfg, 0, sizeof fws_cfg);
! 75:
! 76: /* sysctl context */
! 77: sysctl_ctx_init(&fwsync_sysctl_ctx);
! 78:
! 79: IPFW_ADD_SOPT_HANDLER(1, soc);
! 80:
! 81: memset(&fws_ctx, 0, sizeof fws_ctx);
! 82:
! 83: fwsync_hooked = 1;
! 84: uprintf("Loaded ELWIX %s driver version %d ...\n", DRV_NAME, DRV_VERSION);
! 85: return 0;
! 86: }
! 87: static int
! 88: fwsync_main(module_t m, int what, void *arg)
! 89: {
! 90: int ret = 0;
! 91:
! 92: switch (what) {
! 93: case MOD_LOAD:
! 94: ret = fws_init(arg);
! 95: break;
! 96: case MOD_UNLOAD:
! 97: ret = fws_fini(arg);
! 98: break;
! 99: case MOD_SHUTDOWN:
! 100: ret = fws_shut(arg);
! 101: break;
! 102: case MOD_QUIESCE:
! 103: /* don't unload driver if there have configured driver */
! 104: if (fws_cfg.cfg.on || fws_ctx.config)
! 105: ret = EBUSY;
! 106: break;
! 107: default:
! 108: ret = EINVAL;
! 109: break;
! 110: }
! 111:
! 112: return ret;
! 113: }
! 114:
! 115: static moduledata_t fwsync_mod = {
! 116: "ipfw_sync",
! 117: fwsync_main,
! 118: NULL
! 119: };
! 120:
! 121: DECLARE_MODULE(ipfw_sync, fwsync_mod, SI_SUB_PROTO_FIREWALL, SI_ORDER_ANY);
! 122: MODULE_DEPEND(ipfw_sync, ipfw, 3, 3, 3);
! 123: MODULE_VERSION(ipfw_sync, DRV_VERSION);
! 124:
! 125: SYSINIT(fws_init, SI_SUB_PROTO_FIREWALL, (SI_ORDER_ANY - 128), fws_init, NULL);
! 126: SYSUNINIT(fws_fini, SI_SUB_PROTO_FIREWALL, (SI_ORDER_ANY - 128), fws_fini, NULL);
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