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Added documentation and comments.

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likewise
2003-03-25 12:59:42 +00:00
parent 6621f8b88a
commit fa34d51b7e
11 changed files with 210 additions and 177 deletions
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24
src/core/ipv4/ip.c
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@@ -236,7 +236,7 @@ ip_input(struct pbuf *p, struct netif *inp) {
/* identify the IP header */
iphdr = p->payload;
if(IPH_V(iphdr) != 4) {
DEBUGF(IP_DEBUG, ("IP packet dropped due to bad version number %d\n", IPH_V(iphdr)));
DEBUGF(IP_DEBUG | 1, ("IP packet dropped due to bad version number %d\n", IPH_V(iphdr)));
#if IP_DEBUG
ip_debug_print(p);
#endif /* IP_DEBUG */
@@ -255,7 +255,7 @@ ip_input(struct pbuf *p, struct netif *inp) {
/* header length exceeds first pbuf length? */
if(iphdrlen > p->len) {
DEBUGF(IP_DEBUG, ("IP header (len %u) does not fit in first pbuf (len %u), IP packet droppped.\n",
DEBUGF(IP_DEBUG | 2, ("IP header (len %u) does not fit in first pbuf (len %u), IP packet droppped.\n",
iphdrlen, p->len));
/* free (drop) packet pbufs */
pbuf_free(p);
@@ -270,7 +270,7 @@ ip_input(struct pbuf *p, struct netif *inp) {
/* verify checksum */
if(inet_chksum(iphdr, iphdrlen) != 0) {
DEBUGF(IP_DEBUG, ("Checksum (0x%x) failed, IP packet dropped.\n", inet_chksum(iphdr, iphdrlen)));
DEBUGF(IP_DEBUG | 2, ("Checksum (0x%x) failed, IP packet dropped.\n", inet_chksum(iphdr, iphdrlen)));
#if IP_DEBUG
ip_debug_print(p);
#endif /* IP_DEBUG */
@@ -320,10 +320,10 @@ ip_input(struct pbuf *p, struct netif *inp) {
if(netif == NULL) {
/* remote port is DHCP server? */
if(IPH_PROTO(iphdr) == IP_PROTO_UDP) {
DEBUGF(IP_DEBUG, ("ip_input: UDP packet to DHCP client port %u\n",
DEBUGF(IP_DEBUG | DBG_TRACE | 1, ("ip_input: UDP packet to DHCP client port %u\n",
ntohs(((struct udp_hdr *)((u8_t *)iphdr + iphdrlen))->dest)));
if (ntohs(((struct udp_hdr *)((u8_t *)iphdr + iphdrlen))->dest) == DHCP_CLIENT_PORT) {
DEBUGF(IP_DEBUG, ("ip_input: DHCP packet accepted.\n"));
DEBUGF(IP_DEBUG | DBG_TRACE | 1, ("ip_input: DHCP packet accepted.\n"));
netif = inp;
}
}
@@ -332,7 +332,7 @@ ip_input(struct pbuf *p, struct netif *inp) {
/* packet not for us? */
if(netif == NULL) {
/* packet not for us, route or discard */
DEBUGF(IP_DEBUG, ("ip_input: packet not for us.\n"));
DEBUGF(IP_DEBUG | DBG_TRACE | 1, ("ip_input: packet not for us.\n"));
#if IP_FORWARD
/* non-broadcast packet? */
if(!ip_addr_isbroadcast(&(iphdr->dest), &(inp->netmask))) {
@@ -360,7 +360,7 @@ ip_input(struct pbuf *p, struct netif *inp) {
#else /* IP_REASSEMBLY */
if((IPH_OFFSET(iphdr) & htons(IP_OFFMASK | IP_MF)) != 0) {
pbuf_free(p);
DEBUGF(IP_DEBUG, ("IP packet dropped since it was fragmented (0x%x) (while IP_REASSEMBLY == 0).\n",
DEBUGF(IP_DEBUG | 2, ("IP packet dropped since it was fragmented (0x%x) (while IP_REASSEMBLY == 0).\n",
ntohs(IPH_OFFSET(iphdr))));
#ifdef IP_STATS
++lwip_stats.ip.opterr;
@@ -372,8 +372,8 @@ ip_input(struct pbuf *p, struct netif *inp) {
#endif /* IP_REASSEMBLY */
#if IP_OPTIONS == 0
if(iphdrlen > IP_HLEN) {
DEBUGF(IP_DEBUG, ("IP packet dropped since there were IP options (while IP_OPTIONS == 0).\n"));
if (iphdrlen > IP_HLEN) {
DEBUGF(IP_DEBUG | 2, ("IP packet dropped since there were IP options (while IP_OPTIONS == 0).\n"));
pbuf_free(p);
#ifdef IP_STATS
++lwip_stats.ip.opterr;
@@ -417,7 +417,7 @@ ip_input(struct pbuf *p, struct netif *inp) {
}
pbuf_free(p);
DEBUGF(IP_DEBUG, ("Unsupported transportation protocol %d\n", IPH_PROTO(iphdr)));
DEBUGF(IP_DEBUG | 2, ("Unsupported transport protocol %d\n", IPH_PROTO(iphdr)));
#ifdef IP_STATS
++lwip_stats.ip.proterr;
@@ -450,7 +450,7 @@ ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest,
if(dest != IP_HDRINCL) {
if(pbuf_header(p, IP_HLEN)) {
DEBUGF(IP_DEBUG, ("ip_output: not enough room for IP header in pbuf\n"));
DEBUGF(IP_DEBUG | 2, ("ip_output: not enough room for IP header in pbuf\n"));
#ifdef IP_STATS
++lwip_stats.ip.err;
@@ -517,7 +517,7 @@ ip_output(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest,
struct netif *netif;
if((netif = ip_route(dest)) == NULL) {
DEBUGF(IP_DEBUG, ("ip_output: No route to 0x%lx\n", dest->addr));
DEBUGF(IP_DEBUG | 2, ("ip_output: No route to 0x%lx\n", dest->addr));
#ifdef IP_STATS
++lwip_stats.ip.rterr;