mlx5: refactor special flows handling
[dpdk.git] / drivers / net / mlx5 / mlx5_trigger.c
1 /*-
2  *   BSD LICENSE
3  *
4  *   Copyright 2015 6WIND S.A.
5  *   Copyright 2015 Mellanox.
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11  *     * Redistributions of source code must retain the above copyright
12  *       notice, this list of conditions and the following disclaimer.
13  *     * Redistributions in binary form must reproduce the above copyright
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15  *       the documentation and/or other materials provided with the
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18  *       contributors may be used to endorse or promote products derived
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23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33
34 /* DPDK headers don't like -pedantic. */
35 #ifdef PEDANTIC
36 #pragma GCC diagnostic ignored "-pedantic"
37 #endif
38 #include <rte_ether.h>
39 #include <rte_ethdev.h>
40 #include <rte_interrupts.h>
41 #include <rte_alarm.h>
42 #ifdef PEDANTIC
43 #pragma GCC diagnostic error "-pedantic"
44 #endif
45
46 #include "mlx5.h"
47 #include "mlx5_rxtx.h"
48 #include "mlx5_utils.h"
49
50 /**
51  * DPDK callback to start the device.
52  *
53  * Simulate device start by attaching all configured flows.
54  *
55  * @param dev
56  *   Pointer to Ethernet device structure.
57  *
58  * @return
59  *   0 on success, negative errno value on failure.
60  */
61 int
62 mlx5_dev_start(struct rte_eth_dev *dev)
63 {
64         struct priv *priv = dev->data->dev_private;
65         int err;
66
67         priv_lock(priv);
68         if (priv->started) {
69                 priv_unlock(priv);
70                 return 0;
71         }
72         DEBUG("%p: allocating and configuring hash RX queues", (void *)dev);
73         err = priv_create_hash_rxqs(priv);
74         if (!err)
75                 err = priv_rehash_flows(priv);
76         if (!err)
77                 priv->started = 1;
78         else {
79                 ERROR("%p: an error occurred while configuring hash RX queues:"
80                       " %s",
81                       (void *)priv, strerror(err));
82                 /* Rollback. */
83                 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_ALLMULTI);
84                 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_PROMISC);
85                 priv_mac_addrs_disable(priv);
86                 priv_destroy_hash_rxqs(priv);
87         }
88         priv_dev_interrupt_handler_install(priv, dev);
89         priv_unlock(priv);
90         return -err;
91 }
92
93 /**
94  * DPDK callback to stop the device.
95  *
96  * Simulate device stop by detaching all configured flows.
97  *
98  * @param dev
99  *   Pointer to Ethernet device structure.
100  */
101 void
102 mlx5_dev_stop(struct rte_eth_dev *dev)
103 {
104         struct priv *priv = dev->data->dev_private;
105
106         priv_lock(priv);
107         if (!priv->started) {
108                 priv_unlock(priv);
109                 return;
110         }
111         DEBUG("%p: cleaning up and destroying hash RX queues", (void *)dev);
112         priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_ALLMULTI);
113         priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_PROMISC);
114         priv_mac_addrs_disable(priv);
115         priv_destroy_hash_rxqs(priv);
116         priv_dev_interrupt_handler_uninstall(priv, dev);
117         priv->started = 0;
118         priv_unlock(priv);
119 }