Lines Matching +full:eth +full:- +full:mac
1 // SPDX-License-Identifier: GPL-2.0-or-later
7 * Ethernet-type device handling.
9 * Version: @(#)eth.c 1.0.7 05/25/93
14 * Florian La Roche, <rzsfl@rz.uni-sb.de>
29 * Alan Cox : MAC layer pointers/new format.
34 * Andrew Morton : 26Feb01: kill ether_setup() - use netdev_boot_setup().
46 #include <linux/nvmem-consumer.h>
67 * eth_header - create the Ethernet header
73 * @len: packet length (<= skb->len)
83 struct ethhdr *eth = skb_push(skb, ETH_HLEN); in eth_header() local
86 eth->h_proto = htons(type); in eth_header()
88 eth->h_proto = htons(len); in eth_header()
95 saddr = dev->dev_addr; in eth_header()
96 memcpy(eth->h_source, saddr, ETH_ALEN); in eth_header()
99 memcpy(eth->h_dest, daddr, ETH_ALEN); in eth_header()
104 * Anyway, the loopback-device should never use this function... in eth_header()
107 if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) { in eth_header()
108 eth_zero_addr(eth->h_dest); in eth_header()
112 return -ETH_HLEN; in eth_header()
117 * eth_get_headlen - determine the length of header for an ethernet frame
128 const struct ethhdr *eth = (const struct ethhdr *)data; in eth_get_headlen() local
132 if (unlikely(len < sizeof(*eth))) in eth_get_headlen()
137 eth->h_proto, sizeof(*eth), in eth_get_headlen()
139 return max_t(u32, keys.control.thoff, sizeof(*eth)); in eth_get_headlen()
147 * eth_type_trans - determine the packet's protocol ID.
159 const struct ethhdr *eth; in eth_type_trans() local
161 skb->dev = dev; in eth_type_trans()
164 eth = (struct ethhdr *)skb->data; in eth_type_trans()
167 if (unlikely(!ether_addr_equal_64bits(eth->h_dest, in eth_type_trans()
168 dev->dev_addr))) { in eth_type_trans()
169 if (unlikely(is_multicast_ether_addr_64bits(eth->h_dest))) { in eth_type_trans()
170 if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast)) in eth_type_trans()
171 skb->pkt_type = PACKET_BROADCAST; in eth_type_trans()
173 skb->pkt_type = PACKET_MULTICAST; in eth_type_trans()
175 skb->pkt_type = PACKET_OTHERHOST; in eth_type_trans()
183 * and if so, set skb->protocol without looking at the packet. in eth_type_trans()
192 if (likely(eth_proto_is_802_3(eth->h_proto))) in eth_type_trans()
193 return eth->h_proto; in eth_type_trans()
213 * eth_header_parse - extract hardware address from packet
219 const struct ethhdr *eth = eth_hdr(skb); in eth_header_parse() local
220 memcpy(haddr, eth->h_source, ETH_ALEN); in eth_header_parse()
226 * eth_header_cache - fill cache entry from neighbour
235 struct ethhdr *eth; in eth_header_cache() local
236 const struct net_device *dev = neigh->dev; in eth_header_cache()
238 eth = (struct ethhdr *) in eth_header_cache()
239 (((u8 *) hh->hh_data) + (HH_DATA_OFF(sizeof(*eth)))); in eth_header_cache()
242 return -1; in eth_header_cache()
244 eth->h_proto = type; in eth_header_cache()
245 memcpy(eth->h_source, dev->dev_addr, ETH_ALEN); in eth_header_cache()
246 memcpy(eth->h_dest, neigh->ha, ETH_ALEN); in eth_header_cache()
251 smp_store_release(&hh->hh_len, ETH_HLEN); in eth_header_cache()
258 * eth_header_cache_update - update cache entry
269 memcpy(((u8 *) hh->hh_data) + HH_DATA_OFF(sizeof(struct ethhdr)), in eth_header_cache_update()
275 * eth_header_parser_protocol - extract protocol from L2 header
280 const struct ethhdr *eth = eth_hdr(skb); in eth_header_parse_protocol() local
282 return eth->h_proto; in eth_header_parse_protocol()
287 * eth_prepare_mac_addr_change - prepare for mac change
295 if (!(dev->priv_flags & IFF_LIVE_ADDR_CHANGE) && netif_running(dev)) in eth_prepare_mac_addr_change()
296 return -EBUSY; in eth_prepare_mac_addr_change()
297 if (!is_valid_ether_addr(addr->sa_data)) in eth_prepare_mac_addr_change()
298 return -EADDRNOTAVAIL; in eth_prepare_mac_addr_change()
304 * eth_commit_mac_addr_change - commit mac change
312 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); in eth_commit_mac_addr_change()
317 * eth_mac_addr - set new Ethernet hardware address
340 if (!is_valid_ether_addr(dev->dev_addr)) in eth_validate_addr()
341 return -EADDRNOTAVAIL; in eth_validate_addr()
356 * ether_setup - setup Ethernet network device
359 * Fill in the fields of the device structure with Ethernet-generic values.
363 dev->header_ops = ð_header_ops; in ether_setup()
364 dev->type = ARPHRD_ETHER; in ether_setup()
365 dev->hard_header_len = ETH_HLEN; in ether_setup()
366 dev->min_header_len = ETH_HLEN; in ether_setup()
367 dev->mtu = ETH_DATA_LEN; in ether_setup()
368 dev->min_mtu = ETH_MIN_MTU; in ether_setup()
369 dev->max_mtu = ETH_DATA_LEN; in ether_setup()
370 dev->addr_len = ETH_ALEN; in ether_setup()
371 dev->tx_queue_len = DEFAULT_TX_QUEUE_LEN; in ether_setup()
372 dev->flags = IFF_BROADCAST|IFF_MULTICAST; in ether_setup()
373 dev->priv_flags |= IFF_TX_SKB_SHARING; in ether_setup()
375 eth_broadcast_addr(dev->broadcast); in ether_setup()
381 * alloc_etherdev_mqs - Allocates and sets up an Ethernet device
382 * @sizeof_priv: Size of additional driver-private structure to be allocated
387 * Fill in the fields of the device structure with Ethernet-generic
391 * size (sizeof_priv). A 32-byte (not bit) alignment is enforced for
398 return alloc_netdev_mqs(sizeof_priv, "eth%d", NET_NAME_UNKNOWN, in alloc_etherdev_mqs()
431 if (!NAPI_GRO_CB(p)->same_flow) in eth_gro_receive()
434 eh2 = (struct ethhdr *)(p->data + off_eth); in eth_gro_receive()
436 NAPI_GRO_CB(p)->same_flow = 0; in eth_gro_receive()
441 type = eh->h_proto; in eth_gro_receive()
452 pp = call_gro_receive(ptype->callbacks.gro_receive, head, skb); in eth_gro_receive()
465 struct ethhdr *eh = (struct ethhdr *)(skb->data + nhoff); in eth_gro_complete()
466 __be16 type = eh->h_proto; in eth_gro_complete()
468 int err = -ENOSYS; in eth_gro_complete()
470 if (skb->encapsulation) in eth_gro_complete()
476 err = ptype->callbacks.gro_complete(skb, nhoff + in eth_gro_complete()
511 if (dev->of_node) in eth_platform_get_mac_address()
512 addr = of_get_mac_address(dev->of_node); in eth_platform_get_mac_address()
517 return -ENODEV; in eth_platform_get_mac_address()
526 * Obtain the MAC address from an nvmem cell named 'mac-address' associated
529 * @dev: Device with which the mac-address cell is associated.
530 * @addrbuf: Buffer to which the MAC address will be copied on success.
537 const void *mac; in nvmem_get_mac_address() local
540 cell = nvmem_cell_get(dev, "mac-address"); in nvmem_get_mac_address()
544 mac = nvmem_cell_read(cell, &len); in nvmem_get_mac_address()
547 if (IS_ERR(mac)) in nvmem_get_mac_address()
548 return PTR_ERR(mac); in nvmem_get_mac_address()
550 if (len != ETH_ALEN || !is_valid_ether_addr(mac)) { in nvmem_get_mac_address()
551 kfree(mac); in nvmem_get_mac_address()
552 return -EINVAL; in nvmem_get_mac_address()
555 ether_addr_copy(addrbuf, mac); in nvmem_get_mac_address()
556 kfree(mac); in nvmem_get_mac_address()