--- embedtools/src/vap.c 2010/10/28 09:08:58 1.1.2.5 +++ embedtools/src/vap.c 2010/11/02 01:54:58 1.1.2.7 @@ -23,7 +23,7 @@ wifi_getParent(const char *csVAP, char *psParent, size return 0; } -static inline int +inline int wifi_chkIface(const char *csVAP, char **ppsIF, int nIF) { char szParent[IFNAMSIZ]; @@ -34,13 +34,13 @@ wifi_chkIface(const char *csVAP, char **ppsIF, int nIF assert(csVAP); if (wifi_getParent(csVAP, szParent, IFNAMSIZ) == -1) - return -1; + return 0; for (i = 0; i < nIF; i++) if (!strcasecmp(ppsIF[i], "any") || !strcmp(ppsIF[i], szParent)) return 1; /* OK, vap is child */ - syslog(LOG_ERR, "Error:: Interface %s parent %s not being monitored", csVAP, szParent); + VERB(2) syslog(LOG_ERR, "Error:: Interface %s parent %s not being monitored", csVAP, szParent); return 0; } @@ -96,10 +96,12 @@ wifi_buildWDS(int fd, char **ppsIF, int nIF) struct ether_addr bssid; register int i; + FTRACE(5); + for (i = 0; i < 128; i++) { memset(szVAP, 0, IFNAMSIZ); snprintf(szVAP, IFNAMSIZ, "wlan%d", i); - if (wifi_chkIface(szVAP, ppsIF, nIF) > 0 && wifi_isWDS(fd, szVAP) > 0) { + if (wifi_chkIface(szVAP, ppsIF, nIF) && !wifi_isWDS(fd, szVAP)) { p = malloc(sizeof(struct dwds_if)); if (!p) { syslog(LOG_ERR, "Error:: can`t allocate memory #%d - %s\n", @@ -109,7 +111,8 @@ wifi_buildWDS(int fd, char **ppsIF, int nIF) } strlcpy(p->if_name, szVAP, IFNAMSIZ); if (wifi_getBSSID(fd, szVAP, p->if_bssid, IEEE80211_ADDR_LEN) == -1) { - free(p); + syslog(LOG_ERR, "Error:: can`t get BSSID #%d - %s\n", + errno, strerror(errno)); i = -1; break; } @@ -130,11 +133,13 @@ wifi_buildWDS(int fd, char **ppsIF, int nIF) return wds; } -inline void +inline int wifi_destroyWDS(const char *csIface, struct dwds_if **wds) { struct dwds_if *p, **pp; + FTRACE(5); + assert(csIface); assert(wds); @@ -144,5 +149,142 @@ wifi_destroyWDS(const char *csIface, struct dwds_if ** if (p) { *pp = p->if_next; free(p); + return 0; } + + return 1; +} + +static int +wifi_vapDestroy(const char *csVAP) +{ + struct ieee80211req ifr; + int s; + + FTRACE(5); + + assert(csVAP); + + s = socket(PF_INET, SOCK_DGRAM, 0); + if (s == -1) { + syslog(LOG_ERR, "Error:: destroy socket(vap) %m\n"); + return -1; + } + + memset(&ifr, 0, sizeof ifr); + strlcpy(ifr.i_name, csVAP, IFNAMSIZ); + if (ioctl(s, SIOCIFDESTROY, &ifr) == -1) { + syslog(LOG_ERR, "Error:: destroy ioctl(vap) %m\n"); + close(s); + return -1; + } else + close(s); + + return 0; +} + +inline int +wifi_leaveWDS(struct ether_addr bssid, struct dwds_if **wds) +{ + struct dwds_if *p, **pp; + + FTRACE(5); + + assert(wds); + + for (pp = wds; (p = *pp); pp = &p->if_next) + if (!memcmp(p->if_bssid, &bssid, IEEE80211_ADDR_LEN)) + break; + if (p) { + *pp = p->if_next; + if (wifi_vapDestroy(p->if_name) != -1) + VERB(1) syslog(LOG_INFO, "BSSID:%s WDS VAP %s destroyed\n", + ether_ntoa(&bssid), p->if_name); + free(p); + return 0; + } + + return 1; +} + +static int +wifi_vapCreate(const char *csIface, struct dwds_if *p) +{ + struct ieee80211_clone_params cp; + struct ifreq ifr; + struct ether_addr bssid; + int s; + + FTRACE(5); + + assert(csIface); + assert(p); + + s = socket(PF_INET, SOCK_DGRAM, 0); + if (s == -1) { + syslog(LOG_ERR, "Error:: create socket(vap) %m\n"); + return -1; + } + + memset(&cp, 0, sizeof cp); + strlcpy(cp.icp_parent, csIface, IFNAMSIZ); + cp.icp_opmode = IEEE80211_M_WDS; + memcpy(cp.icp_bssid, p->if_bssid, IEEE80211_ADDR_LEN); + + memset(&ifr, 0, sizeof ifr); + strlcpy(ifr.ifr_name, "wlan", IFNAMSIZ); + ifr.ifr_data = (void *) &cp; + + if (ioctl(s, SIOCIFCREATE2, &ifr) == -1) { + memcpy(&bssid, cp.icp_bssid, IEEE80211_ADDR_LEN); + syslog(LOG_ERR, "Error:: create ioctl(vap) mode %u flags 0x%x parent %s bssid %s %m\n", + cp.icp_opmode, cp.icp_flags, cp.icp_parent, ether_ntoa(&bssid)); + close(s); + return -1; + } else { + strlcpy(p->if_name, ifr.ifr_name, IFNAMSIZ); + close(s); + } + + return 0; +} + +inline int +wifi_createWDS(const char *csIface, struct ether_addr bssid, struct dwds_if **wds) +{ + struct dwds_if *p; + char szParent[IFNAMSIZ]; + + FTRACE(5); + + assert(csIface); + assert(wds); + + for (p = *wds; p; p = p->if_next) + if (!memcmp(p->if_bssid, &bssid, IEEE80211_ADDR_LEN)) { + VERB(1) syslog(LOG_INFO, "BSSID:%s WDS VAP already created (%s)\n", + ether_ntoa(&bssid), csIface); + return 1; + } + if (wifi_getParent(csIface, szParent, IFNAMSIZ) == -1) { + syslog(LOG_ERR, "Error:: %s no pointer to parent interface\n", csIface); + return -1; + } + + p = malloc(sizeof(struct dwds_if)); + if (!p) { + syslog(LOG_ERR, "Error:: malloc failed: %m\n"); + return -1; + } else + memcpy(p->if_bssid, &bssid, IEEE80211_ADDR_LEN); + if (wifi_vapCreate(szParent, p) == -1) { + free(p); + return -1; + } else { + p->if_next = *wds; + *wds = p; + VERB(1) syslog(LOG_INFO, "BSSID:%s create WDS VAP %s\n", ether_ntoa(&bssid), p->if_name); + } + + return 0; }