ppp: implemented unit cache

     If enabled accel-pppd will not destroy interface immediately after corresponding session is terminated, instead interface will be brought down  and placed to cache for later use for new sessions.
     It should reduce kernel interface creation/deletion rate lack and increase responsibility of daemon

1 files changed, 4 insertions, 25 deletions

diff --git a/accel-pppd/ppp/ipcp_opt_ipaddr.c b/accel-pppd/ppp/ipcp_opt_ipaddr.c
index 1455744..e965f5c 100644
--- a/accel-pppd/ppp/ipcp_opt_ipaddr.c
+++ b/accel-pppd/ppp/ipcp_opt_ipaddr.c
@@ -58,8 +58,10 @@ static void ipaddr_free(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt)
 {
 	struct ipaddr_option_t *ipaddr_opt = container_of(opt, typeof(*ipaddr_opt), opt);
 
-	if (ipcp->ppp->ipv4)
+	if (ipcp->ppp->ipv4) {
 		ipdb_put_ipv4(ipcp->ppp, ipcp->ppp->ipv4);
+		ipcp->ppp->ipv4 = NULL;
+	}
 
 	_free(ipaddr_opt);
 }
@@ -137,8 +139,6 @@ static int ipaddr_recv_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *o
 {
 	struct ipaddr_option_t *ipaddr_opt = container_of(opt, typeof(*ipaddr_opt), opt);
 	struct ipcp_opt32_t *opt32 = (struct ipcp_opt32_t *)ptr;
-	struct ifreq ifr;
-	struct sockaddr_in addr;
 	int r;
 
 	if (!ipcp->ppp->ipv4) {
@@ -152,31 +152,10 @@ static int ipaddr_recv_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *o
 
 	if (ipcp->ppp->ipv4->peer_addr == opt32->val) {
 		ipcp->delay_ack = ccp_ipcp_started(ipcp->ppp);
-		goto ack;
+		return IPCP_OPT_ACK;
 	}
 		
 	return IPCP_OPT_NAK;
-
-ack:
-	memset(&ifr, 0, sizeof(ifr));
-	memset(&addr, 0, sizeof(addr));
-
-	strcpy(ifr.ifr_name, ipcp->ppp->ifname);
-
-	addr.sin_family = AF_INET;
-  addr.sin_addr.s_addr = ipcp->ppp->ipv4->addr;
-	memcpy(&ifr.ifr_addr,&addr,sizeof(addr));
-
-	if (ioctl(sock_fd, SIOCSIFADDR, &ifr))
-		log_ppp_error("ipcp: failed to set PA address: %s\n", strerror(errno));
-	
-  addr.sin_addr.s_addr = ipcp->ppp->ipv4->peer_addr;
-	memcpy(&ifr.ifr_dstaddr,&addr,sizeof(addr));
-	
-	if (ioctl(sock_fd, SIOCSIFDSTADDR, &ifr))
-		log_ppp_error("ipcp: failed to set remote PA address: %s\n", strerror(errno));
-
-	return IPCP_OPT_ACK;
 }
 
 static void ipaddr_print(void (*print)(const char *fmt,...),struct ipcp_option_t *opt, uint8_t *ptr)