1 /* QLogic qed NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and /or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include <linux/types.h>
37 #include <linux/interrupt.h>
38 #include <linux/netdevice.h>
39 #include <linux/pci.h>
40 #include <linux/skbuff.h>
41 #include <linux/version.h>
42 #include <linux/kernel.h>
43 #include <linux/slab.h>
44 #include <linux/qed/qed_if.h>
46 struct qed_ll2_stats {
48 u64 gsi_invalid_pkt_length;
49 u64 gsi_unsupported_pkt_typ;
50 u64 gsi_crcchksm_error;
52 u64 packet_too_big_discard;
70 #define QED_LL2_UNUSED_HANDLE (0xff)
72 struct qed_ll2_cb_ops {
73 int (*rx_cb)(void *, struct sk_buff *, u32, u32);
74 int (*tx_cb)(void *, struct sk_buff *, bool);
77 struct qed_ll2_params {
79 bool drop_ttl0_packets;
80 bool rx_vlan_stripping;
83 u8 ll2_mac_address[ETH_ALEN];
88 * @brief start - initializes ll2
91 * @param params - protocol driver configuration for the ll2.
93 * @return 0 on success, otherwise error value.
95 int (*start)(struct qed_dev *cdev, struct qed_ll2_params *params);
98 * @brief stop - stops the ll2
102 * @return 0 on success, otherwise error value.
104 int (*stop)(struct qed_dev *cdev);
107 * @brief start_xmit - transmits an skb over the ll2 interface
112 * @return 0 on success, otherwise error value.
114 int (*start_xmit)(struct qed_dev *cdev, struct sk_buff *skb);
117 * @brief register_cb_ops - protocol driver register the callback for Rx/Tx
118 * packets. Should be called before `start'.
121 * @param cookie - to be passed to the callback functions.
122 * @param ops - the callback functions to register for Rx / Tx.
124 * @return 0 on success, otherwise error value.
126 void (*register_cb_ops)(struct qed_dev *cdev,
127 const struct qed_ll2_cb_ops *ops,
131 * @brief get LL2 related statistics
134 * @param stats - pointer to struct that would be filled with stats
136 * @return 0 on success, error otherwise.
138 int (*get_stats)(struct qed_dev *cdev, struct qed_ll2_stats *stats);
141 #ifdef CONFIG_QED_LL2
142 int qed_ll2_alloc_if(struct qed_dev *);
143 void qed_ll2_dealloc_if(struct qed_dev *);
145 static const struct qed_ll2_ops qed_ll2_ops_pass = {
149 .register_cb_ops = NULL,
153 static inline int qed_ll2_alloc_if(struct qed_dev *cdev)
158 static inline void qed_ll2_dealloc_if(struct qed_dev *cdev)