Lines Matching refs:NULL
61 if (buf != NULL) { in netbuf_new()
62 buf->p = NULL; in netbuf_new()
63 buf->ptr = NULL; in netbuf_new()
77 return NULL; in netbuf_new()
89 if (buf != NULL) { in netbuf_delete()
90 if (buf->p != NULL) { in netbuf_delete()
92 buf->p = buf->ptr = NULL; in netbuf_delete()
109 LWIP_ERROR("netbuf_alloc: invalid buf", (buf != NULL), return NULL;); in netbuf_alloc()
112 if (buf->p != NULL) { in netbuf_alloc()
116 if (buf->p == NULL) { in netbuf_alloc()
117 return NULL; in netbuf_alloc()
133 LWIP_ERROR("netbuf_free: invalid buf", (buf != NULL), return;); in netbuf_free()
134 if (buf->p != NULL) { in netbuf_free()
137 buf->p = buf->ptr = NULL; in netbuf_free()
152 LWIP_ERROR("netbuf_ref: invalid buf", (buf != NULL), return ERR_ARG;); in netbuf_ref()
153 if (buf->p != NULL) { in netbuf_ref()
157 if (buf->p == NULL) { in netbuf_ref()
158 buf->ptr = NULL; in netbuf_ref()
176 LWIP_ERROR("netbuf_ref: invalid head", (head != NULL), return;); in netbuf_chain()
177 LWIP_ERROR("netbuf_chain: invalid tail", (tail != NULL), return;); in netbuf_chain()
195 LWIP_ERROR("netbuf_data: invalid buf", (buf != NULL), return ERR_ARG;); in netbuf_data()
196 LWIP_ERROR("netbuf_data: invalid dataptr", (dataptr != NULL), return ERR_ARG;); in netbuf_data()
197 LWIP_ERROR("netbuf_data: invalid len", (len != NULL), return ERR_ARG;); in netbuf_data()
199 if (buf->ptr == NULL) { in netbuf_data()
220 LWIP_ERROR("netbuf_free: invalid buf", (buf != NULL), return -1;); in netbuf_next()
221 if (buf->ptr->next == NULL) { in netbuf_next()
225 if (buf->ptr->next == NULL) { in netbuf_next()
241 LWIP_ERROR("netbuf_free: invalid buf", (buf != NULL), return;); in netbuf_first()