net/sfc: make it simpler to change datapath ops location

Rx and Tx datapath ops should be stored in process private
data since these structures are located in the data section
(not allocated from shared memory).

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 36dc580..f49a107 100644 (file)
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -1735,6 +1735,8 @@ static int
 sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
 {
        struct sfc_adapter *sa = dev->data->dev_private;
+       const struct sfc_dp_rx *dp_rx;
+       const struct sfc_dp_tx *dp_tx;
        const efx_nic_cfg_t *encp;
        unsigned int avail_caps = 0;
        const char *rx_name = NULL;
@@ -1761,13 +1763,13 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
                goto fail_kvarg_rx_datapath;
 
        if (rx_name != NULL) {
-               sa->dp_rx = sfc_dp_find_rx_by_name(&sfc_dp_head, rx_name);
-               if (sa->dp_rx == NULL) {
+               dp_rx = sfc_dp_find_rx_by_name(&sfc_dp_head, rx_name);
+               if (dp_rx == NULL) {
                        sfc_err(sa, "Rx datapath %s not found", rx_name);
                        rc = ENOENT;
                        goto fail_dp_rx;
                }
-               if (!sfc_dp_match_hw_fw_caps(&sa->dp_rx->dp, avail_caps)) {
+               if (!sfc_dp_match_hw_fw_caps(&dp_rx->dp, avail_caps)) {
                        sfc_err(sa,
                                "Insufficient Hw/FW capabilities to use Rx datapath %s",
                                rx_name);
@@ -1775,8 +1777,8 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
                        goto fail_dp_rx_caps;
                }
        } else {
-               sa->dp_rx = sfc_dp_find_rx_by_caps(&sfc_dp_head, avail_caps);
-               if (sa->dp_rx == NULL) {
+               dp_rx = sfc_dp_find_rx_by_caps(&sfc_dp_head, avail_caps);
+               if (dp_rx == NULL) {
                        sfc_err(sa, "Rx datapath by caps %#x not found",
                                avail_caps);
                        rc = ENOENT;
@@ -1784,7 +1786,7 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
                }
        }
 
-       sa->dp_rx_name = sfc_strdup(sa->dp_rx->dp.name);
+       sa->dp_rx_name = sfc_strdup(dp_rx->dp.name);
        if (sa->dp_rx_name == NULL) {
                rc = ENOMEM;
                goto fail_dp_rx_name;
@@ -1792,21 +1794,19 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
 
        sfc_notice(sa, "use %s Rx datapath", sa->dp_rx_name);
 
-       dev->rx_pkt_burst = sa->dp_rx->pkt_burst;
-
        rc = sfc_kvargs_process(sa, SFC_KVARG_TX_DATAPATH,
                                sfc_kvarg_string_handler, &tx_name);
        if (rc != 0)
                goto fail_kvarg_tx_datapath;
 
        if (tx_name != NULL) {
-               sa->dp_tx = sfc_dp_find_tx_by_name(&sfc_dp_head, tx_name);
-               if (sa->dp_tx == NULL) {
+               dp_tx = sfc_dp_find_tx_by_name(&sfc_dp_head, tx_name);
+               if (dp_tx == NULL) {
                        sfc_err(sa, "Tx datapath %s not found", tx_name);
                        rc = ENOENT;
                        goto fail_dp_tx;
                }
-               if (!sfc_dp_match_hw_fw_caps(&sa->dp_tx->dp, avail_caps)) {
+               if (!sfc_dp_match_hw_fw_caps(&dp_tx->dp, avail_caps)) {
                        sfc_err(sa,
                                "Insufficient Hw/FW capabilities to use Tx datapath %s",
                                tx_name);
@@ -1814,8 +1814,8 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
                        goto fail_dp_tx_caps;
                }
        } else {
-               sa->dp_tx = sfc_dp_find_tx_by_caps(&sfc_dp_head, avail_caps);
-               if (sa->dp_tx == NULL) {
+               dp_tx = sfc_dp_find_tx_by_caps(&sfc_dp_head, avail_caps);
+               if (dp_tx == NULL) {
                        sfc_err(sa, "Tx datapath by caps %#x not found",
                                avail_caps);
                        rc = ENOENT;
@@ -1823,7 +1823,7 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
                }
        }
 
-       sa->dp_tx_name = sfc_strdup(sa->dp_tx->dp.name);
+       sa->dp_tx_name = sfc_strdup(dp_tx->dp.name);
        if (sa->dp_tx_name == NULL) {
                rc = ENOMEM;
                goto fail_dp_tx_name;
@@ -1831,7 +1831,11 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
 
        sfc_notice(sa, "use %s Tx datapath", sa->dp_tx_name);
 
-       dev->tx_pkt_burst = sa->dp_tx->pkt_burst;
+       sa->dp_rx = dp_rx;
+       sa->dp_tx = dp_tx;
+
+       dev->rx_pkt_burst = dp_rx->pkt_burst;
+       dev->tx_pkt_burst = dp_tx->pkt_burst;
 
        dev->dev_ops = &sfc_eth_dev_ops;
 
@@ -1839,8 +1843,6 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
 
 fail_dp_tx_name:
 fail_dp_tx_caps:
-       sa->dp_tx = NULL;
-
 fail_dp_tx:
 fail_kvarg_tx_datapath:
        rte_free(sa->dp_rx_name);
@@ -1848,8 +1850,6 @@ fail_kvarg_tx_datapath:
 
 fail_dp_rx_name:
 fail_dp_rx_caps:
-       sa->dp_rx = NULL;
-
 fail_dp_rx:
 fail_kvarg_rx_datapath:
        return rc;