35 static void xenvif_add_hash(struct xenvif *vif, const u8 *tag,  in xenvif_add_hash()  argument
50 	spin_lock_irqsave(&vif->hash.cache.lock, flags);  in xenvif_add_hash()
54 	list_for_each_entry_rcu(entry, &vif->hash.cache.list, link,  in xenvif_add_hash()
55 				lockdep_is_held(&vif->hash.cache.lock)) {  in xenvif_add_hash()
65 		new->seq = atomic_inc_return(&vif->hash.cache.seq);  in xenvif_add_hash()
66 		list_add_rcu(&new->link, &vif->hash.cache.list);  in xenvif_add_hash()
68 		if (++vif->hash.cache.count > xenvif_hash_cache_size) {  in xenvif_add_hash()
70 			vif->hash.cache.count--;  in xenvif_add_hash()
75 	spin_unlock_irqrestore(&vif->hash.cache.lock, flags);  in xenvif_add_hash()
81 static u32 xenvif_new_hash(struct xenvif *vif, const u8 *data,  in xenvif_new_hash()  argument
86 	val = xen_netif_toeplitz_hash(vif->hash.key,  in xenvif_new_hash()
87 				      sizeof(vif->hash.key),  in xenvif_new_hash()
91 		xenvif_add_hash(vif, data, len, val);  in xenvif_new_hash()
96 static void xenvif_flush_hash(struct xenvif *vif)  in xenvif_flush_hash()  argument
104 	spin_lock_irqsave(&vif->hash.cache.lock, flags);  in xenvif_flush_hash()
106 	list_for_each_entry_rcu(entry, &vif->hash.cache.list, link,  in xenvif_flush_hash()
107 				lockdep_is_held(&vif->hash.cache.lock)) {  in xenvif_flush_hash()
109 		vif->hash.cache.count--;  in xenvif_flush_hash()
113 	spin_unlock_irqrestore(&vif->hash.cache.lock, flags);  in xenvif_flush_hash()
116 static u32 xenvif_find_hash(struct xenvif *vif, const u8 *data,  in xenvif_find_hash()  argument
127 		return xenvif_new_hash(vif, data, len);  in xenvif_find_hash()
133 	list_for_each_entry_rcu(entry, &vif->hash.cache.list, link) {  in xenvif_find_hash()
137 			entry->seq = atomic_inc_return(&vif->hash.cache.seq);  in xenvif_find_hash()
146 		val = xenvif_new_hash(vif, data, len);  in xenvif_find_hash()
151 void xenvif_set_skb_hash(struct xenvif *vif, struct sk_buff *skb)  in xenvif_set_skb_hash()  argument
156 	u32 flags = vif->hash.flags;  in xenvif_set_skb_hash()
200 			hash = xenvif_find_hash(vif, data, sizeof(data));  in xenvif_set_skb_hash()
208 			hash = xenvif_find_hash(vif, data, sizeof(data));  in xenvif_set_skb_hash()
224 			hash = xenvif_find_hash(vif, data, sizeof(data));  in xenvif_set_skb_hash()
232 			hash = xenvif_find_hash(vif, data, sizeof(data));  in xenvif_set_skb_hash()
246 u32 xenvif_set_hash_alg(struct xenvif *vif, u32 alg)  in xenvif_set_hash_alg()  argument
257 	vif->hash.alg = alg;  in xenvif_set_hash_alg()
262 u32 xenvif_get_hash_flags(struct xenvif *vif, u32 *flags)  in xenvif_get_hash_flags()  argument
264 	if (vif->hash.alg == XEN_NETIF_CTRL_HASH_ALGORITHM_NONE)  in xenvif_get_hash_flags()
275 u32 xenvif_set_hash_flags(struct xenvif *vif, u32 flags)  in xenvif_set_hash_flags()  argument
283 	if (vif->hash.alg == XEN_NETIF_CTRL_HASH_ALGORITHM_NONE)  in xenvif_set_hash_flags()
286 	vif->hash.flags = flags;  in xenvif_set_hash_flags()
291 u32 xenvif_set_hash_key(struct xenvif *vif, u32 gref, u32 len)  in xenvif_set_hash_key()  argument
293 	u8 *key = vif->hash.key;  in xenvif_set_hash_key()
296 		.source.domid = vif->domid,  in xenvif_set_hash_key()
318 	xenvif_flush_hash(vif);  in xenvif_set_hash_key()
323 u32 xenvif_set_hash_mapping_size(struct xenvif *vif, u32 size)  in xenvif_set_hash_mapping_size()  argument
328 	vif->hash.size = size;  in xenvif_set_hash_mapping_size()
329 	memset(vif->hash.mapping[vif->hash.mapping_sel], 0,  in xenvif_set_hash_mapping_size()
335 u32 xenvif_set_hash_mapping(struct xenvif *vif, u32 gref, u32 len,  in xenvif_set_hash_mapping()  argument
338 	u32 *mapping = vif->hash.mapping[!vif->hash.mapping_sel];  in xenvif_set_hash_mapping()
342 		.source.domid = vif->domid,  in xenvif_set_hash_mapping()
348 	if ((off + len < off) || (off + len > vif->hash.size) ||  in xenvif_set_hash_mapping()
364 	memcpy(mapping, vif->hash.mapping[vif->hash.mapping_sel],  in xenvif_set_hash_mapping()
365 	       vif->hash.size * sizeof(*mapping));  in xenvif_set_hash_mapping()
376 		if (mapping[off++] >= vif->num_queues)  in xenvif_set_hash_mapping()
379 	vif->hash.mapping_sel = !vif->hash.mapping_sel;  in xenvif_set_hash_mapping()
385 void xenvif_dump_hash_info(struct xenvif *vif, struct seq_file *m)  in xenvif_dump_hash_info()  argument
389 	switch (vif->hash.alg) {  in xenvif_dump_hash_info()
401 	if (vif->hash.flags) {  in xenvif_dump_hash_info()
404 		if (vif->hash.flags & XEN_NETIF_CTRL_HASH_TYPE_IPV4)  in xenvif_dump_hash_info()
406 		if (vif->hash.flags & XEN_NETIF_CTRL_HASH_TYPE_IPV4_TCP)  in xenvif_dump_hash_info()
408 		if (vif->hash.flags & XEN_NETIF_CTRL_HASH_TYPE_IPV6)  in xenvif_dump_hash_info()
410 		if (vif->hash.flags & XEN_NETIF_CTRL_HASH_TYPE_IPV6_TCP)  in xenvif_dump_hash_info()
426 			seq_printf(m, "%02x ", vif->hash.key[i]);  in xenvif_dump_hash_info()
431 	if (vif->hash.size != 0) {  in xenvif_dump_hash_info()
432 		const u32 *mapping = vif->hash.mapping[vif->hash.mapping_sel];  in xenvif_dump_hash_info()
436 		for (i = 0; i < vif->hash.size; ) {  in xenvif_dump_hash_info()
440 			if (i + n >= vif->hash.size)  in xenvif_dump_hash_info()
441 				n = vif->hash.size - i;  in xenvif_dump_hash_info()
454 void xenvif_init_hash(struct xenvif *vif)  in xenvif_init_hash()  argument
459 	BUG_ON(vif->hash.cache.count);  in xenvif_init_hash()
461 	spin_lock_init(&vif->hash.cache.lock);  in xenvif_init_hash()
462 	INIT_LIST_HEAD(&vif->hash.cache.list);  in xenvif_init_hash()
465 void xenvif_deinit_hash(struct xenvif *vif)  in xenvif_deinit_hash()  argument
467 	xenvif_flush_hash(vif);  in xenvif_deinit_hash()