1 /* Intel(R) Ethernet Switch Host Interface Driver
2 * Copyright(c) 2013 - 2017 Intel Corporation.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * The full GNU General Public License is included in this distribution in
14 * the file called "COPYING".
16 * Contact Information:
17 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
18 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
22 #include <linux/vmalloc.h>
23 #include <net/udp_tunnel.h>
26 * fm10k_setup_tx_resources - allocate Tx resources (Descriptors)
27 * @tx_ring: tx descriptor ring (for a specific queue) to setup
29 * Return 0 on success, negative on failure
31 int fm10k_setup_tx_resources(struct fm10k_ring
*tx_ring
)
33 struct device
*dev
= tx_ring
->dev
;
36 size
= sizeof(struct fm10k_tx_buffer
) * tx_ring
->count
;
38 tx_ring
->tx_buffer
= vzalloc(size
);
39 if (!tx_ring
->tx_buffer
)
42 u64_stats_init(&tx_ring
->syncp
);
44 /* round up to nearest 4K */
45 tx_ring
->size
= tx_ring
->count
* sizeof(struct fm10k_tx_desc
);
46 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
48 tx_ring
->desc
= dma_alloc_coherent(dev
, tx_ring
->size
,
49 &tx_ring
->dma
, GFP_KERNEL
);
56 vfree(tx_ring
->tx_buffer
);
57 tx_ring
->tx_buffer
= NULL
;
62 * fm10k_setup_all_tx_resources - allocate all queues Tx resources
63 * @interface: board private structure
65 * If this function returns with an error, then it's possible one or
66 * more of the rings is populated (while the rest are not). It is the
67 * callers duty to clean those orphaned rings.
69 * Return 0 on success, negative on failure
71 static int fm10k_setup_all_tx_resources(struct fm10k_intfc
*interface
)
75 for (i
= 0; i
< interface
->num_tx_queues
; i
++) {
76 err
= fm10k_setup_tx_resources(interface
->tx_ring
[i
]);
80 netif_err(interface
, probe
, interface
->netdev
,
81 "Allocation for Tx Queue %u failed\n", i
);
87 /* rewind the index freeing the rings as we go */
89 fm10k_free_tx_resources(interface
->tx_ring
[i
]);
94 * fm10k_setup_rx_resources - allocate Rx resources (Descriptors)
95 * @rx_ring: rx descriptor ring (for a specific queue) to setup
97 * Returns 0 on success, negative on failure
99 int fm10k_setup_rx_resources(struct fm10k_ring
*rx_ring
)
101 struct device
*dev
= rx_ring
->dev
;
104 size
= sizeof(struct fm10k_rx_buffer
) * rx_ring
->count
;
106 rx_ring
->rx_buffer
= vzalloc(size
);
107 if (!rx_ring
->rx_buffer
)
110 u64_stats_init(&rx_ring
->syncp
);
112 /* Round up to nearest 4K */
113 rx_ring
->size
= rx_ring
->count
* sizeof(union fm10k_rx_desc
);
114 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
116 rx_ring
->desc
= dma_alloc_coherent(dev
, rx_ring
->size
,
117 &rx_ring
->dma
, GFP_KERNEL
);
123 vfree(rx_ring
->rx_buffer
);
124 rx_ring
->rx_buffer
= NULL
;
129 * fm10k_setup_all_rx_resources - allocate all queues Rx resources
130 * @interface: board private structure
132 * If this function returns with an error, then it's possible one or
133 * more of the rings is populated (while the rest are not). It is the
134 * callers duty to clean those orphaned rings.
136 * Return 0 on success, negative on failure
138 static int fm10k_setup_all_rx_resources(struct fm10k_intfc
*interface
)
142 for (i
= 0; i
< interface
->num_rx_queues
; i
++) {
143 err
= fm10k_setup_rx_resources(interface
->rx_ring
[i
]);
147 netif_err(interface
, probe
, interface
->netdev
,
148 "Allocation for Rx Queue %u failed\n", i
);
154 /* rewind the index freeing the rings as we go */
156 fm10k_free_rx_resources(interface
->rx_ring
[i
]);
160 void fm10k_unmap_and_free_tx_resource(struct fm10k_ring
*ring
,
161 struct fm10k_tx_buffer
*tx_buffer
)
163 if (tx_buffer
->skb
) {
164 dev_kfree_skb_any(tx_buffer
->skb
);
165 if (dma_unmap_len(tx_buffer
, len
))
166 dma_unmap_single(ring
->dev
,
167 dma_unmap_addr(tx_buffer
, dma
),
168 dma_unmap_len(tx_buffer
, len
),
170 } else if (dma_unmap_len(tx_buffer
, len
)) {
171 dma_unmap_page(ring
->dev
,
172 dma_unmap_addr(tx_buffer
, dma
),
173 dma_unmap_len(tx_buffer
, len
),
176 tx_buffer
->next_to_watch
= NULL
;
177 tx_buffer
->skb
= NULL
;
178 dma_unmap_len_set(tx_buffer
, len
, 0);
179 /* tx_buffer must be completely set up in the transmit path */
183 * fm10k_clean_tx_ring - Free Tx Buffers
184 * @tx_ring: ring to be cleaned
186 static void fm10k_clean_tx_ring(struct fm10k_ring
*tx_ring
)
188 struct fm10k_tx_buffer
*tx_buffer
;
192 /* ring already cleared, nothing to do */
193 if (!tx_ring
->tx_buffer
)
196 /* Free all the Tx ring sk_buffs */
197 for (i
= 0; i
< tx_ring
->count
; i
++) {
198 tx_buffer
= &tx_ring
->tx_buffer
[i
];
199 fm10k_unmap_and_free_tx_resource(tx_ring
, tx_buffer
);
202 /* reset BQL values */
203 netdev_tx_reset_queue(txring_txq(tx_ring
));
205 size
= sizeof(struct fm10k_tx_buffer
) * tx_ring
->count
;
206 memset(tx_ring
->tx_buffer
, 0, size
);
208 /* Zero out the descriptor ring */
209 memset(tx_ring
->desc
, 0, tx_ring
->size
);
213 * fm10k_free_tx_resources - Free Tx Resources per Queue
214 * @tx_ring: Tx descriptor ring for a specific queue
216 * Free all transmit software resources
218 void fm10k_free_tx_resources(struct fm10k_ring
*tx_ring
)
220 fm10k_clean_tx_ring(tx_ring
);
222 vfree(tx_ring
->tx_buffer
);
223 tx_ring
->tx_buffer
= NULL
;
225 /* if not set, then don't free */
229 dma_free_coherent(tx_ring
->dev
, tx_ring
->size
,
230 tx_ring
->desc
, tx_ring
->dma
);
231 tx_ring
->desc
= NULL
;
235 * fm10k_clean_all_tx_rings - Free Tx Buffers for all queues
236 * @interface: board private structure
238 void fm10k_clean_all_tx_rings(struct fm10k_intfc
*interface
)
242 for (i
= 0; i
< interface
->num_tx_queues
; i
++)
243 fm10k_clean_tx_ring(interface
->tx_ring
[i
]);
247 * fm10k_free_all_tx_resources - Free Tx Resources for All Queues
248 * @interface: board private structure
250 * Free all transmit software resources
252 static void fm10k_free_all_tx_resources(struct fm10k_intfc
*interface
)
254 int i
= interface
->num_tx_queues
;
257 fm10k_free_tx_resources(interface
->tx_ring
[i
]);
261 * fm10k_clean_rx_ring - Free Rx Buffers per Queue
262 * @rx_ring: ring to free buffers from
264 static void fm10k_clean_rx_ring(struct fm10k_ring
*rx_ring
)
269 if (!rx_ring
->rx_buffer
)
273 dev_kfree_skb(rx_ring
->skb
);
276 /* Free all the Rx ring sk_buffs */
277 for (i
= 0; i
< rx_ring
->count
; i
++) {
278 struct fm10k_rx_buffer
*buffer
= &rx_ring
->rx_buffer
[i
];
279 /* clean-up will only set page pointer to NULL */
283 dma_unmap_page(rx_ring
->dev
, buffer
->dma
,
284 PAGE_SIZE
, DMA_FROM_DEVICE
);
285 __free_page(buffer
->page
);
290 size
= sizeof(struct fm10k_rx_buffer
) * rx_ring
->count
;
291 memset(rx_ring
->rx_buffer
, 0, size
);
293 /* Zero out the descriptor ring */
294 memset(rx_ring
->desc
, 0, rx_ring
->size
);
296 rx_ring
->next_to_alloc
= 0;
297 rx_ring
->next_to_clean
= 0;
298 rx_ring
->next_to_use
= 0;
302 * fm10k_free_rx_resources - Free Rx Resources
303 * @rx_ring: ring to clean the resources from
305 * Free all receive software resources
307 void fm10k_free_rx_resources(struct fm10k_ring
*rx_ring
)
309 fm10k_clean_rx_ring(rx_ring
);
311 vfree(rx_ring
->rx_buffer
);
312 rx_ring
->rx_buffer
= NULL
;
314 /* if not set, then don't free */
318 dma_free_coherent(rx_ring
->dev
, rx_ring
->size
,
319 rx_ring
->desc
, rx_ring
->dma
);
321 rx_ring
->desc
= NULL
;
325 * fm10k_clean_all_rx_rings - Free Rx Buffers for all queues
326 * @interface: board private structure
328 void fm10k_clean_all_rx_rings(struct fm10k_intfc
*interface
)
332 for (i
= 0; i
< interface
->num_rx_queues
; i
++)
333 fm10k_clean_rx_ring(interface
->rx_ring
[i
]);
337 * fm10k_free_all_rx_resources - Free Rx Resources for All Queues
338 * @interface: board private structure
340 * Free all receive software resources
342 static void fm10k_free_all_rx_resources(struct fm10k_intfc
*interface
)
344 int i
= interface
->num_rx_queues
;
347 fm10k_free_rx_resources(interface
->rx_ring
[i
]);
351 * fm10k_request_glort_range - Request GLORTs for use in configuring rules
352 * @interface: board private structure
354 * This function allocates a range of glorts for this interface to use.
356 static void fm10k_request_glort_range(struct fm10k_intfc
*interface
)
358 struct fm10k_hw
*hw
= &interface
->hw
;
359 u16 mask
= (~hw
->mac
.dglort_map
) >> FM10K_DGLORTMAP_MASK_SHIFT
;
361 /* establish GLORT base */
362 interface
->glort
= hw
->mac
.dglort_map
& FM10K_DGLORTMAP_NONE
;
363 interface
->glort_count
= 0;
365 /* nothing we can do until mask is allocated */
366 if (hw
->mac
.dglort_map
== FM10K_DGLORTMAP_NONE
)
369 /* we support 3 possible GLORT configurations.
370 * 1: VFs consume all but the last 1
371 * 2: VFs and PF split glorts with possible gap between
372 * 3: VFs allocated first 64, all others belong to PF
374 if (mask
<= hw
->iov
.total_vfs
) {
375 interface
->glort_count
= 1;
376 interface
->glort
+= mask
;
377 } else if (mask
< 64) {
378 interface
->glort_count
= (mask
+ 1) / 2;
379 interface
->glort
+= interface
->glort_count
;
381 interface
->glort_count
= mask
- 63;
382 interface
->glort
+= 64;
387 * fm10k_free_udp_port_info
388 * @interface: board private structure
390 * This function frees both geneve_port and vxlan_port structures
392 static void fm10k_free_udp_port_info(struct fm10k_intfc
*interface
)
394 struct fm10k_udp_port
*port
;
396 /* flush all entries from vxlan list */
397 port
= list_first_entry_or_null(&interface
->vxlan_port
,
398 struct fm10k_udp_port
, list
);
400 list_del(&port
->list
);
402 port
= list_first_entry_or_null(&interface
->vxlan_port
,
403 struct fm10k_udp_port
,
407 /* flush all entries from geneve list */
408 port
= list_first_entry_or_null(&interface
->geneve_port
,
409 struct fm10k_udp_port
, list
);
411 list_del(&port
->list
);
413 port
= list_first_entry_or_null(&interface
->vxlan_port
,
414 struct fm10k_udp_port
,
420 * fm10k_restore_udp_port_info
421 * @interface: board private structure
423 * This function restores the value in the tunnel_cfg register(s) after reset
425 static void fm10k_restore_udp_port_info(struct fm10k_intfc
*interface
)
427 struct fm10k_hw
*hw
= &interface
->hw
;
428 struct fm10k_udp_port
*port
;
430 /* only the PF supports configuring tunnels */
431 if (hw
->mac
.type
!= fm10k_mac_pf
)
434 port
= list_first_entry_or_null(&interface
->vxlan_port
,
435 struct fm10k_udp_port
, list
);
437 /* restore tunnel configuration register */
438 fm10k_write_reg(hw
, FM10K_TUNNEL_CFG
,
439 (port
? ntohs(port
->port
) : 0) |
440 (ETH_P_TEB
<< FM10K_TUNNEL_CFG_NVGRE_SHIFT
));
442 port
= list_first_entry_or_null(&interface
->geneve_port
,
443 struct fm10k_udp_port
, list
);
445 /* restore Geneve tunnel configuration register */
446 fm10k_write_reg(hw
, FM10K_TUNNEL_CFG_GENEVE
,
447 (port
? ntohs(port
->port
) : 0));
450 static struct fm10k_udp_port
*
451 fm10k_remove_tunnel_port(struct list_head
*ports
,
452 struct udp_tunnel_info
*ti
)
454 struct fm10k_udp_port
*port
;
456 list_for_each_entry(port
, ports
, list
) {
457 if ((port
->port
== ti
->port
) &&
458 (port
->sa_family
== ti
->sa_family
)) {
459 list_del(&port
->list
);
467 static void fm10k_insert_tunnel_port(struct list_head
*ports
,
468 struct udp_tunnel_info
*ti
)
470 struct fm10k_udp_port
*port
;
472 /* remove existing port entry from the list so that the newest items
473 * are always at the tail of the list.
475 port
= fm10k_remove_tunnel_port(ports
, ti
);
477 port
= kmalloc(sizeof(*port
), GFP_ATOMIC
);
480 port
->port
= ti
->port
;
481 port
->sa_family
= ti
->sa_family
;
484 list_add_tail(&port
->list
, ports
);
488 * fm10k_udp_tunnel_add
489 * @netdev: network interface device structure
490 * @ti: Tunnel endpoint information
492 * This function is called when a new UDP tunnel port has been added.
493 * Due to hardware restrictions, only one port per type can be offloaded at
496 static void fm10k_udp_tunnel_add(struct net_device
*dev
,
497 struct udp_tunnel_info
*ti
)
499 struct fm10k_intfc
*interface
= netdev_priv(dev
);
501 /* only the PF supports configuring tunnels */
502 if (interface
->hw
.mac
.type
!= fm10k_mac_pf
)
506 case UDP_TUNNEL_TYPE_VXLAN
:
507 fm10k_insert_tunnel_port(&interface
->vxlan_port
, ti
);
509 case UDP_TUNNEL_TYPE_GENEVE
:
510 fm10k_insert_tunnel_port(&interface
->geneve_port
, ti
);
516 fm10k_restore_udp_port_info(interface
);
520 * fm10k_udp_tunnel_del
521 * @netdev: network interface device structure
522 * @ti: Tunnel endpoint information
524 * This function is called when a new UDP tunnel port is deleted. The freed
525 * port will be removed from the list, then we reprogram the offloaded port
526 * based on the head of the list.
528 static void fm10k_udp_tunnel_del(struct net_device
*dev
,
529 struct udp_tunnel_info
*ti
)
531 struct fm10k_intfc
*interface
= netdev_priv(dev
);
532 struct fm10k_udp_port
*port
= NULL
;
534 if (interface
->hw
.mac
.type
!= fm10k_mac_pf
)
538 case UDP_TUNNEL_TYPE_VXLAN
:
539 port
= fm10k_remove_tunnel_port(&interface
->vxlan_port
, ti
);
541 case UDP_TUNNEL_TYPE_GENEVE
:
542 port
= fm10k_remove_tunnel_port(&interface
->geneve_port
, ti
);
548 /* if we did remove a port we need to free its memory */
551 fm10k_restore_udp_port_info(interface
);
555 * fm10k_open - Called when a network interface is made active
556 * @netdev: network interface device structure
558 * Returns 0 on success, negative value on failure
560 * The open entry point is called when a network interface is made
561 * active by the system (IFF_UP). At this point all resources needed
562 * for transmit and receive operations are allocated, the interrupt
563 * handler is registered with the OS, the watchdog timer is started,
564 * and the stack is notified that the interface is ready.
566 int fm10k_open(struct net_device
*netdev
)
568 struct fm10k_intfc
*interface
= netdev_priv(netdev
);
571 /* allocate transmit descriptors */
572 err
= fm10k_setup_all_tx_resources(interface
);
576 /* allocate receive descriptors */
577 err
= fm10k_setup_all_rx_resources(interface
);
581 /* allocate interrupt resources */
582 err
= fm10k_qv_request_irq(interface
);
586 /* setup GLORT assignment for this port */
587 fm10k_request_glort_range(interface
);
589 /* Notify the stack of the actual queue counts */
590 err
= netif_set_real_num_tx_queues(netdev
,
591 interface
->num_tx_queues
);
595 err
= netif_set_real_num_rx_queues(netdev
,
596 interface
->num_rx_queues
);
600 udp_tunnel_get_rx_info(netdev
);
607 fm10k_qv_free_irq(interface
);
609 fm10k_free_all_rx_resources(interface
);
611 fm10k_free_all_tx_resources(interface
);
617 * fm10k_close - Disables a network interface
618 * @netdev: network interface device structure
620 * Returns 0, this is not allowed to fail
622 * The close entry point is called when an interface is de-activated
623 * by the OS. The hardware is still under the drivers control, but
624 * needs to be disabled. A global MAC reset is issued to stop the
625 * hardware, and all transmit and receive resources are freed.
627 int fm10k_close(struct net_device
*netdev
)
629 struct fm10k_intfc
*interface
= netdev_priv(netdev
);
631 fm10k_down(interface
);
633 fm10k_qv_free_irq(interface
);
635 fm10k_free_udp_port_info(interface
);
637 fm10k_free_all_tx_resources(interface
);
638 fm10k_free_all_rx_resources(interface
);
643 static netdev_tx_t
fm10k_xmit_frame(struct sk_buff
*skb
, struct net_device
*dev
)
645 struct fm10k_intfc
*interface
= netdev_priv(dev
);
646 unsigned int r_idx
= skb
->queue_mapping
;
649 if ((skb
->protocol
== htons(ETH_P_8021Q
)) &&
650 !skb_vlan_tag_present(skb
)) {
651 /* FM10K only supports hardware tagging, any tags in frame
652 * are considered 2nd level or "outer" tags
654 struct vlan_hdr
*vhdr
;
657 /* make sure skb is not shared */
658 skb
= skb_share_check(skb
, GFP_ATOMIC
);
662 /* make sure there is enough room to move the ethernet header */
663 if (unlikely(!pskb_may_pull(skb
, VLAN_ETH_HLEN
)))
666 /* verify the skb head is not shared */
667 err
= skb_cow_head(skb
, 0);
673 /* locate VLAN header */
674 vhdr
= (struct vlan_hdr
*)(skb
->data
+ ETH_HLEN
);
676 /* pull the 2 key pieces of data out of it */
677 __vlan_hwaccel_put_tag(skb
,
679 ntohs(vhdr
->h_vlan_TCI
));
680 proto
= vhdr
->h_vlan_encapsulated_proto
;
681 skb
->protocol
= (ntohs(proto
) >= 1536) ? proto
:
684 /* squash it by moving the ethernet addresses up 4 bytes */
685 memmove(skb
->data
+ VLAN_HLEN
, skb
->data
, 12);
686 __skb_pull(skb
, VLAN_HLEN
);
687 skb_reset_mac_header(skb
);
690 /* The minimum packet size for a single buffer is 17B so pad the skb
691 * in order to meet this minimum size requirement.
693 if (unlikely(skb
->len
< 17)) {
694 int pad_len
= 17 - skb
->len
;
696 if (skb_pad(skb
, pad_len
))
698 __skb_put(skb
, pad_len
);
701 if (r_idx
>= interface
->num_tx_queues
)
702 r_idx
%= interface
->num_tx_queues
;
704 err
= fm10k_xmit_frame_ring(skb
, interface
->tx_ring
[r_idx
]);
710 * fm10k_tx_timeout - Respond to a Tx Hang
711 * @netdev: network interface device structure
713 static void fm10k_tx_timeout(struct net_device
*netdev
)
715 struct fm10k_intfc
*interface
= netdev_priv(netdev
);
716 bool real_tx_hang
= false;
719 #define TX_TIMEO_LIMIT 16000
720 for (i
= 0; i
< interface
->num_tx_queues
; i
++) {
721 struct fm10k_ring
*tx_ring
= interface
->tx_ring
[i
];
723 if (check_for_tx_hang(tx_ring
) && fm10k_check_tx_hang(tx_ring
))
728 fm10k_tx_timeout_reset(interface
);
730 netif_info(interface
, drv
, netdev
,
731 "Fake Tx hang detected with timeout of %d seconds\n",
732 netdev
->watchdog_timeo
/ HZ
);
734 /* fake Tx hang - increase the kernel timeout */
735 if (netdev
->watchdog_timeo
< TX_TIMEO_LIMIT
)
736 netdev
->watchdog_timeo
*= 2;
741 * fm10k_host_mbx_ready - Check PF interface's mailbox readiness
742 * @interface: board private structure
744 * This function checks if the PF interface's mailbox is ready before queueing
745 * mailbox messages for transmission. This will prevent filling the TX mailbox
746 * queue when the receiver is not ready. VF interfaces are exempt from this
747 * check since it will block all PF-VF mailbox messages from being sent from
748 * the VF to the PF at initialization.
750 static bool fm10k_host_mbx_ready(struct fm10k_intfc
*interface
)
752 struct fm10k_hw
*hw
= &interface
->hw
;
754 return (hw
->mac
.type
== fm10k_mac_vf
|| interface
->host_ready
);
757 static int fm10k_uc_vlan_unsync(struct net_device
*netdev
,
758 const unsigned char *uc_addr
)
760 struct fm10k_intfc
*interface
= netdev_priv(netdev
);
761 struct fm10k_hw
*hw
= &interface
->hw
;
762 u16 glort
= interface
->glort
;
763 u16 vid
= interface
->vid
;
764 bool set
= !!(vid
/ VLAN_N_VID
);
765 int err
= -EHOSTDOWN
;
767 /* drop any leading bits on the VLAN ID */
768 vid
&= VLAN_N_VID
- 1;
770 if (fm10k_host_mbx_ready(interface
))
771 err
= hw
->mac
.ops
.update_uc_addr(hw
, glort
, uc_addr
,
777 /* return non-zero value as we are only doing a partial sync/unsync */
781 static int fm10k_mc_vlan_unsync(struct net_device
*netdev
,
782 const unsigned char *mc_addr
)
784 struct fm10k_intfc
*interface
= netdev_priv(netdev
);
785 struct fm10k_hw
*hw
= &interface
->hw
;
786 u16 glort
= interface
->glort
;
787 u16 vid
= interface
->vid
;
788 bool set
= !!(vid
/ VLAN_N_VID
);
789 int err
= -EHOSTDOWN
;
791 /* drop any leading bits on the VLAN ID */
792 vid
&= VLAN_N_VID
- 1;
794 if (fm10k_host_mbx_ready(interface
))
795 err
= hw
->mac
.ops
.update_mc_addr(hw
, glort
, mc_addr
, vid
, set
);
800 /* return non-zero value as we are only doing a partial sync/unsync */
804 static int fm10k_update_vid(struct net_device
*netdev
, u16 vid
, bool set
)
806 struct fm10k_intfc
*interface
= netdev_priv(netdev
);
807 struct fm10k_hw
*hw
= &interface
->hw
;
811 /* updates do not apply to VLAN 0 */
815 if (vid
>= VLAN_N_VID
)
818 /* Verify we have permission to add VLANs */
819 if (hw
->mac
.vlan_override
)
822 /* update active_vlans bitmask */
823 set_bit(vid
, interface
->active_vlans
);
825 clear_bit(vid
, interface
->active_vlans
);
827 /* disable the default VLAN ID on ring if we have an active VLAN */
828 for (i
= 0; i
< interface
->num_rx_queues
; i
++) {
829 struct fm10k_ring
*rx_ring
= interface
->rx_ring
[i
];
830 u16 rx_vid
= rx_ring
->vid
& (VLAN_N_VID
- 1);
832 if (test_bit(rx_vid
, interface
->active_vlans
))
833 rx_ring
->vid
|= FM10K_VLAN_CLEAR
;
835 rx_ring
->vid
&= ~FM10K_VLAN_CLEAR
;
838 /* Do not remove default VLAN ID related entries from VLAN and MAC
841 if (!set
&& vid
== hw
->mac
.default_vid
)
844 /* Do not throw an error if the interface is down. We will sync once
847 if (test_bit(__FM10K_DOWN
, interface
->state
))
850 fm10k_mbx_lock(interface
);
852 /* only need to update the VLAN if not in promiscuous mode */
853 if (!(netdev
->flags
& IFF_PROMISC
)) {
854 err
= hw
->mac
.ops
.update_vlan(hw
, vid
, 0, set
);
859 /* update our base MAC address if host's mailbox is ready */
860 if (fm10k_host_mbx_ready(interface
))
861 err
= hw
->mac
.ops
.update_uc_addr(hw
, interface
->glort
,
862 hw
->mac
.addr
, vid
, set
, 0);
869 /* set VLAN ID prior to syncing/unsyncing the VLAN */
870 interface
->vid
= vid
+ (set
? VLAN_N_VID
: 0);
872 /* Update the unicast and multicast address list to add/drop VLAN */
873 __dev_uc_unsync(netdev
, fm10k_uc_vlan_unsync
);
874 __dev_mc_unsync(netdev
, fm10k_mc_vlan_unsync
);
877 fm10k_mbx_unlock(interface
);
882 static int fm10k_vlan_rx_add_vid(struct net_device
*netdev
,
883 __always_unused __be16 proto
, u16 vid
)
885 /* update VLAN and address table based on changes */
886 return fm10k_update_vid(netdev
, vid
, true);
889 static int fm10k_vlan_rx_kill_vid(struct net_device
*netdev
,
890 __always_unused __be16 proto
, u16 vid
)
892 /* update VLAN and address table based on changes */
893 return fm10k_update_vid(netdev
, vid
, false);
896 static u16
fm10k_find_next_vlan(struct fm10k_intfc
*interface
, u16 vid
)
898 struct fm10k_hw
*hw
= &interface
->hw
;
899 u16 default_vid
= hw
->mac
.default_vid
;
900 u16 vid_limit
= vid
< default_vid
? default_vid
: VLAN_N_VID
;
902 vid
= find_next_bit(interface
->active_vlans
, vid_limit
, ++vid
);
907 static void fm10k_clear_unused_vlans(struct fm10k_intfc
*interface
)
909 struct fm10k_hw
*hw
= &interface
->hw
;
912 /* loop through and find any gaps in the table */
913 for (vid
= 0, prev_vid
= 0;
914 prev_vid
< VLAN_N_VID
;
915 prev_vid
= vid
+ 1, vid
= fm10k_find_next_vlan(interface
, vid
)) {
919 /* send request to clear multiple bits at a time */
920 prev_vid
+= (vid
- prev_vid
- 1) << FM10K_VLAN_LENGTH_SHIFT
;
921 hw
->mac
.ops
.update_vlan(hw
, prev_vid
, 0, false);
925 static int __fm10k_uc_sync(struct net_device
*dev
,
926 const unsigned char *addr
, bool sync
)
928 struct fm10k_intfc
*interface
= netdev_priv(dev
);
929 struct fm10k_hw
*hw
= &interface
->hw
;
930 u16 vid
, glort
= interface
->glort
;
933 if (!is_valid_ether_addr(addr
))
934 return -EADDRNOTAVAIL
;
936 /* update table with current entries if host's mailbox is ready */
937 if (!fm10k_host_mbx_ready(interface
))
940 for (vid
= hw
->mac
.default_vid
? fm10k_find_next_vlan(interface
, 0) : 1;
942 vid
= fm10k_find_next_vlan(interface
, vid
)) {
943 err
= hw
->mac
.ops
.update_uc_addr(hw
, glort
, addr
,
952 static int fm10k_uc_sync(struct net_device
*dev
,
953 const unsigned char *addr
)
955 return __fm10k_uc_sync(dev
, addr
, true);
958 static int fm10k_uc_unsync(struct net_device
*dev
,
959 const unsigned char *addr
)
961 return __fm10k_uc_sync(dev
, addr
, false);
964 static int fm10k_set_mac(struct net_device
*dev
, void *p
)
966 struct fm10k_intfc
*interface
= netdev_priv(dev
);
967 struct fm10k_hw
*hw
= &interface
->hw
;
968 struct sockaddr
*addr
= p
;
971 if (!is_valid_ether_addr(addr
->sa_data
))
972 return -EADDRNOTAVAIL
;
974 if (dev
->flags
& IFF_UP
) {
975 /* setting MAC address requires mailbox */
976 fm10k_mbx_lock(interface
);
978 err
= fm10k_uc_sync(dev
, addr
->sa_data
);
980 fm10k_uc_unsync(dev
, hw
->mac
.addr
);
982 fm10k_mbx_unlock(interface
);
986 ether_addr_copy(dev
->dev_addr
, addr
->sa_data
);
987 ether_addr_copy(hw
->mac
.addr
, addr
->sa_data
);
988 dev
->addr_assign_type
&= ~NET_ADDR_RANDOM
;
991 /* if we had a mailbox error suggest trying again */
992 return err
? -EAGAIN
: 0;
995 static int __fm10k_mc_sync(struct net_device
*dev
,
996 const unsigned char *addr
, bool sync
)
998 struct fm10k_intfc
*interface
= netdev_priv(dev
);
999 struct fm10k_hw
*hw
= &interface
->hw
;
1000 u16 vid
, glort
= interface
->glort
;
1002 /* update table with current entries if host's mailbox is ready */
1003 if (!fm10k_host_mbx_ready(interface
))
1006 for (vid
= hw
->mac
.default_vid
? fm10k_find_next_vlan(interface
, 0) : 1;
1008 vid
= fm10k_find_next_vlan(interface
, vid
)) {
1009 hw
->mac
.ops
.update_mc_addr(hw
, glort
, addr
, vid
, sync
);
1015 static int fm10k_mc_sync(struct net_device
*dev
,
1016 const unsigned char *addr
)
1018 return __fm10k_mc_sync(dev
, addr
, true);
1021 static int fm10k_mc_unsync(struct net_device
*dev
,
1022 const unsigned char *addr
)
1024 return __fm10k_mc_sync(dev
, addr
, false);
1027 static void fm10k_set_rx_mode(struct net_device
*dev
)
1029 struct fm10k_intfc
*interface
= netdev_priv(dev
);
1030 struct fm10k_hw
*hw
= &interface
->hw
;
1033 /* no need to update the harwdare if we are not running */
1034 if (!(dev
->flags
& IFF_UP
))
1037 /* determine new mode based on flags */
1038 xcast_mode
= (dev
->flags
& IFF_PROMISC
) ? FM10K_XCAST_MODE_PROMISC
:
1039 (dev
->flags
& IFF_ALLMULTI
) ? FM10K_XCAST_MODE_ALLMULTI
:
1040 (dev
->flags
& (IFF_BROADCAST
| IFF_MULTICAST
)) ?
1041 FM10K_XCAST_MODE_MULTI
: FM10K_XCAST_MODE_NONE
;
1043 fm10k_mbx_lock(interface
);
1045 /* update xcast mode first, but only if it changed */
1046 if (interface
->xcast_mode
!= xcast_mode
) {
1047 /* update VLAN table */
1048 if (xcast_mode
== FM10K_XCAST_MODE_PROMISC
)
1049 hw
->mac
.ops
.update_vlan(hw
, FM10K_VLAN_ALL
, 0, true);
1050 if (interface
->xcast_mode
== FM10K_XCAST_MODE_PROMISC
)
1051 fm10k_clear_unused_vlans(interface
);
1053 /* update xcast mode if host's mailbox is ready */
1054 if (fm10k_host_mbx_ready(interface
))
1055 hw
->mac
.ops
.update_xcast_mode(hw
, interface
->glort
,
1058 /* record updated xcast mode state */
1059 interface
->xcast_mode
= xcast_mode
;
1062 /* synchronize all of the addresses */
1063 __dev_uc_sync(dev
, fm10k_uc_sync
, fm10k_uc_unsync
);
1064 __dev_mc_sync(dev
, fm10k_mc_sync
, fm10k_mc_unsync
);
1066 fm10k_mbx_unlock(interface
);
1069 void fm10k_restore_rx_state(struct fm10k_intfc
*interface
)
1071 struct net_device
*netdev
= interface
->netdev
;
1072 struct fm10k_hw
*hw
= &interface
->hw
;
1076 /* record glort for this interface */
1077 glort
= interface
->glort
;
1079 /* convert interface flags to xcast mode */
1080 if (netdev
->flags
& IFF_PROMISC
)
1081 xcast_mode
= FM10K_XCAST_MODE_PROMISC
;
1082 else if (netdev
->flags
& IFF_ALLMULTI
)
1083 xcast_mode
= FM10K_XCAST_MODE_ALLMULTI
;
1084 else if (netdev
->flags
& (IFF_BROADCAST
| IFF_MULTICAST
))
1085 xcast_mode
= FM10K_XCAST_MODE_MULTI
;
1087 xcast_mode
= FM10K_XCAST_MODE_NONE
;
1089 fm10k_mbx_lock(interface
);
1091 /* Enable logical port if host's mailbox is ready */
1092 if (fm10k_host_mbx_ready(interface
))
1093 hw
->mac
.ops
.update_lport_state(hw
, glort
,
1094 interface
->glort_count
, true);
1096 /* update VLAN table */
1097 hw
->mac
.ops
.update_vlan(hw
, FM10K_VLAN_ALL
, 0,
1098 xcast_mode
== FM10K_XCAST_MODE_PROMISC
);
1100 /* Add filter for VLAN 0 */
1101 hw
->mac
.ops
.update_vlan(hw
, 0, 0, true);
1103 /* update table with current entries */
1104 for (vid
= hw
->mac
.default_vid
? fm10k_find_next_vlan(interface
, 0) : 1;
1106 vid
= fm10k_find_next_vlan(interface
, vid
)) {
1107 hw
->mac
.ops
.update_vlan(hw
, vid
, 0, true);
1109 /* Update unicast entries if host's mailbox is ready */
1110 if (fm10k_host_mbx_ready(interface
))
1111 hw
->mac
.ops
.update_uc_addr(hw
, glort
, hw
->mac
.addr
,
1115 /* update xcast mode before synchronizing addresses if host's mailbox
1118 if (fm10k_host_mbx_ready(interface
))
1119 hw
->mac
.ops
.update_xcast_mode(hw
, glort
, xcast_mode
);
1121 /* synchronize all of the addresses */
1122 __dev_uc_sync(netdev
, fm10k_uc_sync
, fm10k_uc_unsync
);
1123 __dev_mc_sync(netdev
, fm10k_mc_sync
, fm10k_mc_unsync
);
1125 fm10k_mbx_unlock(interface
);
1127 /* record updated xcast mode state */
1128 interface
->xcast_mode
= xcast_mode
;
1130 /* Restore tunnel configuration */
1131 fm10k_restore_udp_port_info(interface
);
1134 void fm10k_reset_rx_state(struct fm10k_intfc
*interface
)
1136 struct net_device
*netdev
= interface
->netdev
;
1137 struct fm10k_hw
*hw
= &interface
->hw
;
1139 fm10k_mbx_lock(interface
);
1141 /* clear the logical port state on lower device if host's mailbox is
1144 if (fm10k_host_mbx_ready(interface
))
1145 hw
->mac
.ops
.update_lport_state(hw
, interface
->glort
,
1146 interface
->glort_count
, false);
1148 fm10k_mbx_unlock(interface
);
1150 /* reset flags to default state */
1151 interface
->xcast_mode
= FM10K_XCAST_MODE_NONE
;
1153 /* clear the sync flag since the lport has been dropped */
1154 __dev_uc_unsync(netdev
, NULL
);
1155 __dev_mc_unsync(netdev
, NULL
);
1159 * fm10k_get_stats64 - Get System Network Statistics
1160 * @netdev: network interface device structure
1161 * @stats: storage space for 64bit statistics
1163 * Obtain 64bit statistics in a way that is safe for both 32bit and 64bit
1166 static void fm10k_get_stats64(struct net_device
*netdev
,
1167 struct rtnl_link_stats64
*stats
)
1169 struct fm10k_intfc
*interface
= netdev_priv(netdev
);
1170 struct fm10k_ring
*ring
;
1171 unsigned int start
, i
;
1176 for (i
= 0; i
< interface
->num_rx_queues
; i
++) {
1177 ring
= READ_ONCE(interface
->rx_ring
[i
]);
1183 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
1184 packets
= ring
->stats
.packets
;
1185 bytes
= ring
->stats
.bytes
;
1186 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
1188 stats
->rx_packets
+= packets
;
1189 stats
->rx_bytes
+= bytes
;
1192 for (i
= 0; i
< interface
->num_tx_queues
; i
++) {
1193 ring
= READ_ONCE(interface
->tx_ring
[i
]);
1199 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
1200 packets
= ring
->stats
.packets
;
1201 bytes
= ring
->stats
.bytes
;
1202 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
1204 stats
->tx_packets
+= packets
;
1205 stats
->tx_bytes
+= bytes
;
1210 /* following stats updated by fm10k_service_task() */
1211 stats
->rx_missed_errors
= netdev
->stats
.rx_missed_errors
;
1214 int fm10k_setup_tc(struct net_device
*dev
, u8 tc
)
1216 struct fm10k_intfc
*interface
= netdev_priv(dev
);
1219 /* Currently only the PF supports priority classes */
1220 if (tc
&& (interface
->hw
.mac
.type
!= fm10k_mac_pf
))
1223 /* Hardware supports up to 8 traffic classes */
1227 /* Hardware has to reinitialize queues to match packet
1228 * buffer alignment. Unfortunately, the hardware is not
1229 * flexible enough to do this dynamically.
1231 if (netif_running(dev
))
1234 fm10k_mbx_free_irq(interface
);
1236 fm10k_clear_queueing_scheme(interface
);
1238 /* we expect the prio_tc map to be repopulated later */
1239 netdev_reset_tc(dev
);
1240 netdev_set_num_tc(dev
, tc
);
1242 err
= fm10k_init_queueing_scheme(interface
);
1244 goto err_queueing_scheme
;
1246 err
= fm10k_mbx_request_irq(interface
);
1250 err
= netif_running(dev
) ? fm10k_open(dev
) : 0;
1254 /* flag to indicate SWPRI has yet to be updated */
1255 set_bit(FM10K_FLAG_SWPRI_CONFIG
, interface
->flags
);
1259 fm10k_mbx_free_irq(interface
);
1261 fm10k_clear_queueing_scheme(interface
);
1262 err_queueing_scheme
:
1263 netif_device_detach(dev
);
1268 static int __fm10k_setup_tc(struct net_device
*dev
, enum tc_setup_type type
,
1269 u32 handle
, u32 chain_index
, __be16 proto
,
1270 struct tc_to_netdev
*tc
)
1272 if (type
!= TC_SETUP_MQPRIO
)
1275 tc
->mqprio
->hw
= TC_MQPRIO_HW_OFFLOAD_TCS
;
1277 return fm10k_setup_tc(dev
, tc
->mqprio
->num_tc
);
1280 static void fm10k_assign_l2_accel(struct fm10k_intfc
*interface
,
1281 struct fm10k_l2_accel
*l2_accel
)
1283 struct fm10k_ring
*ring
;
1286 for (i
= 0; i
< interface
->num_rx_queues
; i
++) {
1287 ring
= interface
->rx_ring
[i
];
1288 rcu_assign_pointer(ring
->l2_accel
, l2_accel
);
1291 interface
->l2_accel
= l2_accel
;
1294 static void *fm10k_dfwd_add_station(struct net_device
*dev
,
1295 struct net_device
*sdev
)
1297 struct fm10k_intfc
*interface
= netdev_priv(dev
);
1298 struct fm10k_l2_accel
*l2_accel
= interface
->l2_accel
;
1299 struct fm10k_l2_accel
*old_l2_accel
= NULL
;
1300 struct fm10k_dglort_cfg dglort
= { 0 };
1301 struct fm10k_hw
*hw
= &interface
->hw
;
1305 /* allocate l2 accel structure if it is not available */
1307 /* verify there is enough free GLORTs to support l2_accel */
1308 if (interface
->glort_count
< 7)
1309 return ERR_PTR(-EBUSY
);
1311 size
= offsetof(struct fm10k_l2_accel
, macvlan
[7]);
1312 l2_accel
= kzalloc(size
, GFP_KERNEL
);
1314 return ERR_PTR(-ENOMEM
);
1317 l2_accel
->dglort
= interface
->glort
;
1319 /* update pointers */
1320 fm10k_assign_l2_accel(interface
, l2_accel
);
1321 /* do not expand if we are at our limit */
1322 } else if ((l2_accel
->count
== FM10K_MAX_STATIONS
) ||
1323 (l2_accel
->count
== (interface
->glort_count
- 1))) {
1324 return ERR_PTR(-EBUSY
);
1325 /* expand if we have hit the size limit */
1326 } else if (l2_accel
->count
== l2_accel
->size
) {
1327 old_l2_accel
= l2_accel
;
1328 size
= offsetof(struct fm10k_l2_accel
,
1329 macvlan
[(l2_accel
->size
* 2) + 1]);
1330 l2_accel
= kzalloc(size
, GFP_KERNEL
);
1332 return ERR_PTR(-ENOMEM
);
1334 memcpy(l2_accel
, old_l2_accel
,
1335 offsetof(struct fm10k_l2_accel
,
1336 macvlan
[old_l2_accel
->size
]));
1338 l2_accel
->size
= (old_l2_accel
->size
* 2) + 1;
1340 /* update pointers */
1341 fm10k_assign_l2_accel(interface
, l2_accel
);
1342 kfree_rcu(old_l2_accel
, rcu
);
1345 /* add macvlan to accel table, and record GLORT for position */
1346 for (i
= 0; i
< l2_accel
->size
; i
++) {
1347 if (!l2_accel
->macvlan
[i
])
1351 /* record station */
1352 l2_accel
->macvlan
[i
] = sdev
;
1355 /* configure default DGLORT mapping for RSS/DCB */
1356 dglort
.idx
= fm10k_dglort_pf_rss
;
1357 dglort
.inner_rss
= 1;
1358 dglort
.rss_l
= fls(interface
->ring_feature
[RING_F_RSS
].mask
);
1359 dglort
.pc_l
= fls(interface
->ring_feature
[RING_F_QOS
].mask
);
1360 dglort
.glort
= interface
->glort
;
1361 dglort
.shared_l
= fls(l2_accel
->size
);
1362 hw
->mac
.ops
.configure_dglort_map(hw
, &dglort
);
1364 /* Add rules for this specific dglort to the switch */
1365 fm10k_mbx_lock(interface
);
1367 glort
= l2_accel
->dglort
+ 1 + i
;
1369 if (fm10k_host_mbx_ready(interface
)) {
1370 hw
->mac
.ops
.update_xcast_mode(hw
, glort
,
1371 FM10K_XCAST_MODE_MULTI
);
1372 hw
->mac
.ops
.update_uc_addr(hw
, glort
, sdev
->dev_addr
,
1376 fm10k_mbx_unlock(interface
);
1381 static void fm10k_dfwd_del_station(struct net_device
*dev
, void *priv
)
1383 struct fm10k_intfc
*interface
= netdev_priv(dev
);
1384 struct fm10k_l2_accel
*l2_accel
= READ_ONCE(interface
->l2_accel
);
1385 struct fm10k_dglort_cfg dglort
= { 0 };
1386 struct fm10k_hw
*hw
= &interface
->hw
;
1387 struct net_device
*sdev
= priv
;
1394 /* search table for matching interface */
1395 for (i
= 0; i
< l2_accel
->size
; i
++) {
1396 if (l2_accel
->macvlan
[i
] == sdev
)
1400 /* exit if macvlan not found */
1401 if (i
== l2_accel
->size
)
1404 /* Remove any rules specific to this dglort */
1405 fm10k_mbx_lock(interface
);
1407 glort
= l2_accel
->dglort
+ 1 + i
;
1409 if (fm10k_host_mbx_ready(interface
)) {
1410 hw
->mac
.ops
.update_xcast_mode(hw
, glort
,
1411 FM10K_XCAST_MODE_NONE
);
1412 hw
->mac
.ops
.update_uc_addr(hw
, glort
, sdev
->dev_addr
,
1416 fm10k_mbx_unlock(interface
);
1418 /* record removal */
1419 l2_accel
->macvlan
[i
] = NULL
;
1422 /* configure default DGLORT mapping for RSS/DCB */
1423 dglort
.idx
= fm10k_dglort_pf_rss
;
1424 dglort
.inner_rss
= 1;
1425 dglort
.rss_l
= fls(interface
->ring_feature
[RING_F_RSS
].mask
);
1426 dglort
.pc_l
= fls(interface
->ring_feature
[RING_F_QOS
].mask
);
1427 dglort
.glort
= interface
->glort
;
1428 dglort
.shared_l
= fls(l2_accel
->size
);
1429 hw
->mac
.ops
.configure_dglort_map(hw
, &dglort
);
1431 /* If table is empty remove it */
1432 if (l2_accel
->count
== 0) {
1433 fm10k_assign_l2_accel(interface
, NULL
);
1434 kfree_rcu(l2_accel
, rcu
);
1438 static netdev_features_t
fm10k_features_check(struct sk_buff
*skb
,
1439 struct net_device
*dev
,
1440 netdev_features_t features
)
1442 if (!skb
->encapsulation
|| fm10k_tx_encap_offload(skb
))
1445 return features
& ~(NETIF_F_CSUM_MASK
| NETIF_F_GSO_MASK
);
1448 static const struct net_device_ops fm10k_netdev_ops
= {
1449 .ndo_open
= fm10k_open
,
1450 .ndo_stop
= fm10k_close
,
1451 .ndo_validate_addr
= eth_validate_addr
,
1452 .ndo_start_xmit
= fm10k_xmit_frame
,
1453 .ndo_set_mac_address
= fm10k_set_mac
,
1454 .ndo_tx_timeout
= fm10k_tx_timeout
,
1455 .ndo_vlan_rx_add_vid
= fm10k_vlan_rx_add_vid
,
1456 .ndo_vlan_rx_kill_vid
= fm10k_vlan_rx_kill_vid
,
1457 .ndo_set_rx_mode
= fm10k_set_rx_mode
,
1458 .ndo_get_stats64
= fm10k_get_stats64
,
1459 .ndo_setup_tc
= __fm10k_setup_tc
,
1460 .ndo_set_vf_mac
= fm10k_ndo_set_vf_mac
,
1461 .ndo_set_vf_vlan
= fm10k_ndo_set_vf_vlan
,
1462 .ndo_set_vf_rate
= fm10k_ndo_set_vf_bw
,
1463 .ndo_get_vf_config
= fm10k_ndo_get_vf_config
,
1464 .ndo_udp_tunnel_add
= fm10k_udp_tunnel_add
,
1465 .ndo_udp_tunnel_del
= fm10k_udp_tunnel_del
,
1466 .ndo_dfwd_add_station
= fm10k_dfwd_add_station
,
1467 .ndo_dfwd_del_station
= fm10k_dfwd_del_station
,
1468 #ifdef CONFIG_NET_POLL_CONTROLLER
1469 .ndo_poll_controller
= fm10k_netpoll
,
1471 .ndo_features_check
= fm10k_features_check
,
1474 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
1476 struct net_device
*fm10k_alloc_netdev(const struct fm10k_info
*info
)
1478 netdev_features_t hw_features
;
1479 struct fm10k_intfc
*interface
;
1480 struct net_device
*dev
;
1482 dev
= alloc_etherdev_mq(sizeof(struct fm10k_intfc
), MAX_QUEUES
);
1486 /* set net device and ethtool ops */
1487 dev
->netdev_ops
= &fm10k_netdev_ops
;
1488 fm10k_set_ethtool_ops(dev
);
1490 /* configure default debug level */
1491 interface
= netdev_priv(dev
);
1492 interface
->msg_enable
= BIT(DEFAULT_DEBUG_LEVEL_SHIFT
) - 1;
1494 /* configure default features */
1495 dev
->features
|= NETIF_F_IP_CSUM
|
1504 /* Only the PF can support VXLAN and NVGRE tunnel offloads */
1505 if (info
->mac
== fm10k_mac_pf
) {
1506 dev
->hw_enc_features
= NETIF_F_IP_CSUM
|
1510 NETIF_F_GSO_UDP_TUNNEL
|
1514 dev
->features
|= NETIF_F_GSO_UDP_TUNNEL
;
1517 /* all features defined to this point should be changeable */
1518 hw_features
= dev
->features
;
1520 /* allow user to enable L2 forwarding acceleration */
1521 hw_features
|= NETIF_F_HW_L2FW_DOFFLOAD
;
1523 /* configure VLAN features */
1524 dev
->vlan_features
|= dev
->features
;
1526 /* we want to leave these both on as we cannot disable VLAN tag
1527 * insertion or stripping on the hardware since it is contained
1528 * in the FTAG and not in the frame itself.
1530 dev
->features
|= NETIF_F_HW_VLAN_CTAG_TX
|
1531 NETIF_F_HW_VLAN_CTAG_RX
|
1532 NETIF_F_HW_VLAN_CTAG_FILTER
;
1534 dev
->priv_flags
|= IFF_UNICAST_FLT
;
1536 dev
->hw_features
|= hw_features
;
1538 /* MTU range: 68 - 15342 */
1539 dev
->min_mtu
= ETH_MIN_MTU
;
1540 dev
->max_mtu
= FM10K_MAX_JUMBO_FRAME_SIZE
;