59 SYSCTL_NODE(_compat_linuxkpi, OID_AUTO, skb, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
94 	struct sk_buff *skb;  in linuxkpi_alloc_skb()  local
98 	skb = uma_zalloc(skbzone, linux_check_m_flags(gfp) | M_ZERO);  in linuxkpi_alloc_skb()
99 	if (skb == NULL)  in linuxkpi_alloc_skb()
102 	skb->prev = skb->next = skb;  in linuxkpi_alloc_skb()
103 	skb->truesize = size;  in linuxkpi_alloc_skb()
104 	skb->shinfo = (struct skb_shared_info *)(skb + 1);  in linuxkpi_alloc_skb()
107 		return (skb);  in linuxkpi_alloc_skb()
136 		uma_zfree(skbzone, skb);  in linuxkpi_alloc_skb()
140 	skb->head = skb->data = (uint8_t *)p;  in linuxkpi_alloc_skb()
141 	skb_reset_tail_pointer(skb);  in linuxkpi_alloc_skb()
142 	skb->end = skb->head + size;  in linuxkpi_alloc_skb()
144 	SKB_TRACE_FMT(skb, "data %p size %zu", (skb) ? skb->data : NULL, size);  in linuxkpi_alloc_skb()
145 	return (skb);  in linuxkpi_alloc_skb()
151 	struct sk_buff *skb;  in linuxkpi_dev_alloc_skb()  local
155 	skb = linuxkpi_alloc_skb(len, gfp);  in linuxkpi_dev_alloc_skb()
157 	if (skb != NULL)  in linuxkpi_dev_alloc_skb()
158 		skb_reserve(skb, NET_SKB_PAD);  in linuxkpi_dev_alloc_skb()
160 	SKB_TRACE_FMT(skb, "data %p size %zu len %zu",  in linuxkpi_dev_alloc_skb()
161 	    (skb) ? skb->data : NULL, size, len);  in linuxkpi_dev_alloc_skb()
162 	return (skb);  in linuxkpi_dev_alloc_skb()
168 	struct sk_buff *skb;  in linuxkpi_build_skb()  local
174 	skb = linuxkpi_alloc_skb(0, GFP_KERNEL);  in linuxkpi_build_skb()
175 	if (skb == NULL)  in linuxkpi_build_skb()
178 	skb->_flags |= _SKB_FLAGS_SKBEXTFRAG;  in linuxkpi_build_skb()
179 	skb->truesize = fragsz;  in linuxkpi_build_skb()
180 	skb->head = skb->data = data;  in linuxkpi_build_skb()
181 	skb_reset_tail_pointer(skb);  in linuxkpi_build_skb()
182 	skb->end = skb->head + fragsz;  in linuxkpi_build_skb()
184 	return (skb);  in linuxkpi_build_skb()
188 linuxkpi_skb_copy(const struct sk_buff *skb, gfp_t gfp)  in linuxkpi_skb_copy()  argument
196 	len = skb->end - skb->head + skb->data_len;  in linuxkpi_skb_copy()
202 	headroom = skb_headroom(skb);  in linuxkpi_skb_copy()
205 	skb_put(new, skb->len);		/* tail and len get adjusted */  in linuxkpi_skb_copy()
208 	memcpy(new->head, skb->data - headroom, headroom + skb->len);  in linuxkpi_skb_copy()
211 	shinfo = skb->shinfo;  in linuxkpi_skb_copy()
219 	memcpy(new->cb, skb->cb, sizeof(skb->cb));  in linuxkpi_skb_copy()
226 linuxkpi_kfree_skb(struct sk_buff *skb)  in linuxkpi_kfree_skb()  argument
231 	SKB_TRACE(skb);  in linuxkpi_kfree_skb()
232 	if (skb == NULL)  in linuxkpi_kfree_skb()
240 	if (skb->m != NULL) {  in linuxkpi_kfree_skb()
243 		m = skb->m;  in linuxkpi_kfree_skb()
244 		skb->m = NULL;  in linuxkpi_kfree_skb()
246 		KASSERT(skb->m_free_func != NULL, ("%s: skb %p has m %p but no "  in linuxkpi_kfree_skb()
247 		    "m_free_func %p\n", __func__, skb, m, skb->m_free_func));  in linuxkpi_kfree_skb()
248 		skb->m_free_func(m);  in linuxkpi_kfree_skb()
250 	KASSERT(skb->m == NULL,  in linuxkpi_kfree_skb()
251 	    ("%s: skb %p m %p != NULL\n", __func__, skb, skb->m));  in linuxkpi_kfree_skb()
253 	shinfo = skb->shinfo;  in linuxkpi_kfree_skb()
270 	if ((skb->_flags & _SKB_FLAGS_SKBEXTFRAG) != 0) {  in linuxkpi_kfree_skb()
273 		p = skb->head;  in linuxkpi_kfree_skb()
275 		skb->head = NULL;  in linuxkpi_kfree_skb()
280 		free(skb->head, M_LKPISKB);  in linuxkpi_kfree_skb()
283 	kfree(skb->head);  in linuxkpi_kfree_skb()
284 	uma_zfree(skbzone, skb);  in linuxkpi_kfree_skb()
305 DB_SHOW_COMMAND(skb, db_show_skb)  in DB_SHOW_COMMAND()  argument
307 	struct sk_buff *skb;  in DB_SHOW_COMMAND()  local
315 	skb = (struct sk_buff *)addr;  in DB_SHOW_COMMAND()
317 	db_printf("skb %p\n", skb);  in DB_SHOW_COMMAND()
318 	db_printf("\tnext %p prev %p\n", skb->next, skb->prev);  in DB_SHOW_COMMAND()
319 	db_printf("\tlist %p\n", &skb->list);  in DB_SHOW_COMMAND()
321 	    skb->len, skb->data_len, skb->truesize, skb->mac_len);  in DB_SHOW_COMMAND()
323 	    skb->csum, skb->l3hdroff, skb->l4hdroff, skb->priority, skb->qmap);  in DB_SHOW_COMMAND()
325 	    skb->pkt_type, skb->dev, skb->sk);  in DB_SHOW_COMMAND()
327 	    skb->csum_offset, skb->csum_start, skb->ip_summed, skb->protocol);  in DB_SHOW_COMMAND()
328 	db_printf("\t_flags %#06x\n", skb->_flags);		/* XXX-BZ print names? */  in DB_SHOW_COMMAND()
330 	    skb->head, skb->data, skb->tail, skb->end);  in DB_SHOW_COMMAND()
332 	    skb->shinfo, skb->m, skb->m_free_func);  in DB_SHOW_COMMAND()
334 	if (skb->shinfo != NULL) {  in DB_SHOW_COMMAND()
337 		shinfo = skb->shinfo;  in DB_SHOW_COMMAND()
352 	db_printf("\tcb[] %p {", skb->cb);  in DB_SHOW_COMMAND()
353 	for (i = 0; i < nitems(skb->cb); i++) {  in DB_SHOW_COMMAND()
355 		    skb->cb[i], (i < (nitems(skb->cb)-1)) ? ", " : "");  in DB_SHOW_COMMAND()
359 	db_printf("\t__scratch[0] %p\n", skb->__scratch);  in DB_SHOW_COMMAND()