#define DRV_VER_UPD 0
#include <linux/interrupt.h>
+#include <net/devlink.h>
struct tx_bd {
__le32 tx_bd_len_flags_type;
#define BNXT_TPA_OUTER_L3_OFF(hdr_info) \
((hdr_info) & 0x1ff)
+
+ u16 cfa_code; /* cfa_code in TPA start compl */
};
struct bnxt_rx_ring_info {
#define BNXT_CAG_REG_LEGACY_INT_STATUS 0x4014
#define BNXT_CAG_REG_BASE 0x300000
+struct bnxt_vf_rep_stats {
+ u64 packets;
+ u64 bytes;
+ u64 dropped;
+};
+
+struct bnxt_vf_rep {
+ struct bnxt *bp;
+ struct net_device *dev;
+ u16 vf_idx;
+ u16 tx_cfa_action;
+ u16 rx_cfa_code;
+
+ struct bnxt_vf_rep_stats rx_stats;
+ struct bnxt_vf_rep_stats tx_stats;
+};
+
struct bnxt {
void __iomem *bar0;
void __iomem *bar1;
wait_queue_head_t sriov_cfg_wait;
bool sriov_cfg;
#define BNXT_SRIOV_CFG_WAIT_TMO msecs_to_jiffies(10000)
+
+ /* lock to protect VF-rep creation/cleanup via
+ * multiple paths such as ->sriov_configure() and
+ * devlink ->eswitch_mode_set()
+ */
+ struct mutex sriov_lock;
#endif
#define BNXT_NTP_FLTR_MAX_FLTR 4096
struct bnxt_led_info leds[BNXT_MAX_LED];
struct bpf_prog *xdp_prog;
+
+ /* devlink interface and vf-rep structs */
+ struct devlink *dl;
+ enum devlink_eswitch_mode eswitch_mode;
+ struct bnxt_vf_rep **vf_reps; /* array of vf-rep ptrs */
+ u16 *cfa_code_map; /* cfa_code -> vf_idx map */
};
#define BNXT_RX_STATS_OFFSET(counter) \
--- /dev/null
+/* Broadcom NetXtreme-C/E network driver.
+ *
+ * Copyright (c) 2016-2017 Broadcom Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <linux/jhash.h>
+
+#include "bnxt_hsi.h"
+#include "bnxt.h"
+#include "bnxt_vfr.h"
+
+#define CFA_HANDLE_INVALID 0xffff
+
+static void __bnxt_vf_reps_destroy(struct bnxt *bp)
+{
+ u16 num_vfs = pci_num_vf(bp->pdev);
+ struct bnxt_vf_rep *vf_rep;
+ int i;
+
+ for (i = 0; i < num_vfs; i++) {
+ vf_rep = bp->vf_reps[i];
+ if (vf_rep) {
+ if (vf_rep->dev) {
+ /* if register_netdev failed, then netdev_ops
+ * would have been set to NULL
+ */
+ if (vf_rep->dev->netdev_ops)
+ unregister_netdev(vf_rep->dev);
+ free_netdev(vf_rep->dev);
+ }
+ }
+ }
+
+ kfree(bp->vf_reps);
+ bp->vf_reps = NULL;
+}
+
+void bnxt_vf_reps_destroy(struct bnxt *bp)
+{
+ bool closed = false;
+
+ if (bp->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV)
+ return;
+
+ if (!bp->vf_reps)
+ return;
+
+ /* Ensure that parent PF's and VF-reps' RX/TX has been quiesced
+ * before proceeding with VF-rep cleanup.
+ */
+ rtnl_lock();
+ if (netif_running(bp->dev)) {
+ bnxt_close_nic(bp, false, false);
+ closed = true;
+ }
+ bp->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY;
+
+ if (closed)
+ bnxt_open_nic(bp, false, false);
+ rtnl_unlock();
+
+ /* Need to call vf_reps_destroy() outside of rntl_lock
+ * as unregister_netdev takes rtnl_lock
+ */
+ __bnxt_vf_reps_destroy(bp);
+}
+
+/* Use the OUI of the PF's perm addr and report the same mac addr
+ * for the same VF-rep each time
+ */
+static void bnxt_vf_rep_eth_addr_gen(u8 *src_mac, u16 vf_idx, u8 *mac)
+{
+ u32 addr;
+
+ ether_addr_copy(mac, src_mac);
+
+ addr = jhash(src_mac, ETH_ALEN, 0) + vf_idx;
+ mac[3] = (u8)(addr & 0xFF);
+ mac[4] = (u8)((addr >> 8) & 0xFF);
+ mac[5] = (u8)((addr >> 16) & 0xFF);
+}
+
+static void bnxt_vf_rep_netdev_init(struct bnxt *bp, struct bnxt_vf_rep *vf_rep,
+ struct net_device *dev)
+{
+ struct net_device *pf_dev = bp->dev;
+
+ /* Just inherit all the featues of the parent PF as the VF-R
+ * uses the RX/TX rings of the parent PF
+ */
+ dev->hw_features = pf_dev->hw_features;
+ dev->gso_partial_features = pf_dev->gso_partial_features;
+ dev->vlan_features = pf_dev->vlan_features;
+ dev->hw_enc_features = pf_dev->hw_enc_features;
+ dev->features |= pf_dev->features;
+ bnxt_vf_rep_eth_addr_gen(bp->pf.mac_addr, vf_rep->vf_idx,
+ dev->perm_addr);
+ ether_addr_copy(dev->dev_addr, dev->perm_addr);
+}
+
+static int bnxt_vf_reps_create(struct bnxt *bp)
+{
+ u16 num_vfs = pci_num_vf(bp->pdev);
+ struct bnxt_vf_rep *vf_rep;
+ struct net_device *dev;
+ int rc, i;
+
+ bp->vf_reps = kcalloc(num_vfs, sizeof(vf_rep), GFP_KERNEL);
+ if (!bp->vf_reps)
+ return -ENOMEM;
+
+ for (i = 0; i < num_vfs; i++) {
+ dev = alloc_etherdev(sizeof(*vf_rep));
+ if (!dev) {
+ rc = -ENOMEM;
+ goto err;
+ }
+
+ vf_rep = netdev_priv(dev);
+ bp->vf_reps[i] = vf_rep;
+ vf_rep->dev = dev;
+ vf_rep->bp = bp;
+ vf_rep->vf_idx = i;
+ vf_rep->tx_cfa_action = CFA_HANDLE_INVALID;
+
+ bnxt_vf_rep_netdev_init(bp, vf_rep, dev);
+ rc = register_netdev(dev);
+ if (rc) {
+ /* no need for unregister_netdev in cleanup */
+ dev->netdev_ops = NULL;
+ goto err;
+ }
+ }
+
+ bp->eswitch_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV;
+ return 0;
+
+err:
+ netdev_info(bp->dev, "%s error=%d", __func__, rc);
+ __bnxt_vf_reps_destroy(bp);
+ return rc;
+}
+
+/* Devlink related routines */
+static int bnxt_dl_eswitch_mode_get(struct devlink *devlink, u16 *mode)
+{
+ struct bnxt *bp = bnxt_get_bp_from_dl(devlink);
+
+ *mode = bp->eswitch_mode;
+ return 0;
+}
+
+static int bnxt_dl_eswitch_mode_set(struct devlink *devlink, u16 mode)
+{
+ struct bnxt *bp = bnxt_get_bp_from_dl(devlink);
+ int rc = 0;
+
+ mutex_lock(&bp->sriov_lock);
+ if (bp->eswitch_mode == mode) {
+ netdev_info(bp->dev, "already in %s eswitch mode",
+ mode == DEVLINK_ESWITCH_MODE_LEGACY ?
+ "legacy" : "switchdev");
+ rc = -EINVAL;
+ goto done;
+ }
+
+ switch (mode) {
+ case DEVLINK_ESWITCH_MODE_LEGACY:
+ bnxt_vf_reps_destroy(bp);
+ break;
+
+ case DEVLINK_ESWITCH_MODE_SWITCHDEV:
+ if (pci_num_vf(bp->pdev) == 0) {
+ netdev_info(bp->dev,
+ "Enable VFs before setting swtichdev mode");
+ rc = -EPERM;
+ goto done;
+ }
+ rc = bnxt_vf_reps_create(bp);
+ break;
+
+ default:
+ rc = -EINVAL;
+ goto done;
+ }
+done:
+ mutex_unlock(&bp->sriov_lock);
+ return rc;
+}
+
+static const struct devlink_ops bnxt_dl_ops = {
+ .eswitch_mode_set = bnxt_dl_eswitch_mode_set,
+ .eswitch_mode_get = bnxt_dl_eswitch_mode_get
+};
+
+int bnxt_dl_register(struct bnxt *bp)
+{
+ struct devlink *dl;
+ int rc;
+
+ if (!pci_find_ext_capability(bp->pdev, PCI_EXT_CAP_ID_SRIOV))
+ return 0;
+
+ if (bp->hwrm_spec_code < 0x10800) {
+ netdev_warn(bp->dev, "Firmware does not support SR-IOV E-Switch SWITCHDEV mode.\n");
+ return -ENOTSUPP;
+ }
+
+ dl = devlink_alloc(&bnxt_dl_ops, sizeof(struct bnxt_dl));
+ if (!dl) {
+ netdev_warn(bp->dev, "devlink_alloc failed");
+ return -ENOMEM;
+ }
+
+ bnxt_link_bp_to_dl(dl, bp);
+ bp->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY;
+ rc = devlink_register(dl, &bp->pdev->dev);
+ if (rc) {
+ bnxt_link_bp_to_dl(dl, NULL);
+ devlink_free(dl);
+ netdev_warn(bp->dev, "devlink_register failed. rc=%d", rc);
+ return rc;
+ }
+
+ return 0;
+}
+
+void bnxt_dl_unregister(struct bnxt *bp)
+{
+ struct devlink *dl = bp->dl;
+
+ if (!dl)
+ return;
+
+ devlink_unregister(dl);
+ devlink_free(dl);
+}
projects / users / willy / pagecache.git / commitdiff