Lines Matching refs:NULL
25 * pbuf of a packet has a ->next field other than NULL, more packets
29 * loop end condition (tot_len == p->len), NOT (next == NULL).
95 if(tcpip_callback_with_block(pbuf_free_ooseq_callback, NULL, 0) != ERR_OK) { \
127 for (pcb = tcp_active_pcbs; NULL != pcb; pcb = pcb->next) {
128 if (NULL != pcb->ooseq) {
132 pcb->ooseq = NULL;
233 return NULL;
241 if (p == NULL) {
243 return NULL;
246 p->next = NULL;
273 if (q == NULL) {
278 return NULL;
282 q->next = NULL;
303 /*r->next = NULL;*/
309 if (p == NULL) {
310 return NULL;
315 p->next = NULL;
327 if (p == NULL) {
331 return NULL;
334 p->payload = NULL;
336 p->next = NULL;
341 return NULL;
361 * may be NULL if set later.
392 return NULL;
397 return NULL;
400 p->pbuf.next = NULL;
401 if (payload_mem != NULL) {
404 p->pbuf.payload = NULL;
436 LWIP_ASSERT("pbuf_realloc: p != NULL", p != NULL);
464 LWIP_ASSERT("pbuf_realloc: q != NULL", q != NULL);
474 LWIP_ASSERT("mem_trim returned q == NULL", q != NULL);
481 if (q->next != NULL) {
486 q->next = NULL;
517 LWIP_ASSERT("p != NULL", p != NULL);
518 if ((header_size_increment == 0) || (p == NULL)) {
624 if (p == NULL) {
625 LWIP_ASSERT("p != NULL", p != NULL);
628 ("pbuf_free(p == NULL) was called.\n"));
642 while (p != NULL) {
664 LWIP_ASSERT("pc->custom_free_function != NULL", pc->custom_free_function != NULL);
688 p = NULL;
709 while (p != NULL) {
727 if (p != NULL) {
749 LWIP_ERROR("(h != NULL) && (t != NULL) (programmer violates API)",
750 ((h != NULL) && (t != NULL)), return;);
753 for (p = h; p->next != NULL; p = p->next) {
757 /* { p is last pbuf of first h chain, p->next == NULL } */
759 LWIP_ASSERT("p->next == NULL", p->next == NULL);
799 * @return remainder of the pbuf chain, or NULL if it was de-allocated.
810 if (q != NULL) {
816 p->next = NULL;
826 /* return remaining tail or NULL if deallocated */
830 return ((tail_gone > 0) ? NULL : q);
848 * ERR_ARG if one of the pbufs is NULL or p_to is not big
860 LWIP_ERROR("pbuf_copy: target not big enough to hold source", ((p_to != NULL) &&
861 (p_from != NULL) && (p_to->tot_len >= p_from->tot_len)), return ERR_ARG;);
888 LWIP_ERROR("p_to != NULL", (p_to != NULL) || (p_from == NULL) , return ERR_ARG;);
891 if((p_from != NULL) && (p_from->len == p_from->tot_len)) {
894 (p_from->next == NULL), return ERR_VAL;);
896 if((p_to != NULL) && (p_to->len == p_to->tot_len)) {
899 (p_to->next == NULL), return ERR_VAL;);
925 LWIP_ERROR("pbuf_copy_partial: invalid buf", (buf != NULL), return 0;);
926 LWIP_ERROR("pbuf_copy_partial: invalid dataptr", (dataptr != NULL), return 0;);
930 if((buf == NULL) || (dataptr == NULL)) {
935 for(p = buf; len != 0 && p != NULL; p = p->next) {
973 LWIP_ERROR("pbuf_take: invalid buf", (buf != NULL), return 0;);
974 LWIP_ERROR("pbuf_take: invalid dataptr", (dataptr != NULL), return 0;);
976 if ((buf == NULL) || (dataptr == NULL) || (buf->tot_len < len)) {
982 LWIP_ASSERT("pbuf_take: invalid pbuf", p != NULL);
1006 * @return a new, single pbuf (p->next is NULL)
1014 if (p->next == NULL) {
1018 if (q == NULL) {
1048 LWIP_ASSERT("p != NULL", p != NULL);
1049 LWIP_ASSERT("dataptr != NULL", dataptr != NULL);
1050 LWIP_ASSERT("chksum != NULL", chksum != NULL);
1083 while ((q != NULL) && (q->len <= copy_from)) {
1088 if ((q != NULL) && (q->len > copy_from)) {
1110 while ((q != NULL) && (q->len <= start)) {
1115 if ((q != NULL) && (q->len > start)) {
1171 if ((substr == NULL) || (substr[0] == 0) || (p->tot_len == 0xFFFF)) {