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Diffstat (limited to 'sys/dev/sfxge/common/efx_tunnel.c')
-rw-r--r--sys/dev/sfxge/common/efx_tunnel.c492
1 files changed, 492 insertions, 0 deletions
diff --git a/sys/dev/sfxge/common/efx_tunnel.c b/sys/dev/sfxge/common/efx_tunnel.c
new file mode 100644
index 000000000000..25bce9f9c437
--- /dev/null
+++ b/sys/dev/sfxge/common/efx_tunnel.c
@@ -0,0 +1,492 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2017-2018 Solarflare Communications Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are
+ * those of the authors and should not be interpreted as representing official
+ * policies, either expressed or implied, of the FreeBSD Project.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "efx.h"
+#include "efx_impl.h"
+
+
+#if EFSYS_OPT_TUNNEL
+
+#if EFSYS_OPT_SIENA || EFSYS_OPT_HUNTINGTON
+static const efx_tunnel_ops_t __efx_tunnel_dummy_ops = {
+ NULL, /* eto_udp_encap_supported */
+ NULL, /* eto_reconfigure */
+};
+#endif /* EFSYS_OPT_SIENA || EFSYS_OPT_HUNTINGTON */
+
+#if EFSYS_OPT_MEDFORD
+static __checkReturn boolean_t
+medford_udp_encap_supported(
+ __in efx_nic_t *enp);
+
+static __checkReturn efx_rc_t
+medford_tunnel_reconfigure(
+ __in efx_nic_t *enp);
+
+static const efx_tunnel_ops_t __efx_tunnel_medford_ops = {
+ medford_udp_encap_supported, /* eto_udp_encap_supported */
+ medford_tunnel_reconfigure, /* eto_reconfigure */
+};
+#endif /* EFSYS_OPT_MEDFORD */
+
+static __checkReturn efx_rc_t
+efx_mcdi_set_tunnel_encap_udp_ports(
+ __in efx_nic_t *enp,
+ __in efx_tunnel_cfg_t *etcp,
+ __in boolean_t unloading,
+ __out boolean_t *resetting)
+{
+ efx_mcdi_req_t req;
+ uint8_t payload[MAX(MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_LENMAX,
+ MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_OUT_LEN)];
+ efx_word_t flags;
+ efx_rc_t rc;
+ unsigned int i;
+ unsigned int entries_num;
+
+ if (etcp == NULL)
+ entries_num = 0;
+ else
+ entries_num = etcp->etc_udp_entries_num;
+
+ (void) memset(payload, 0, sizeof (payload));
+ req.emr_cmd = MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS;
+ req.emr_in_buf = payload;
+ req.emr_in_length =
+ MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_LEN(entries_num);
+ req.emr_out_buf = payload;
+ req.emr_out_length = MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_OUT_LEN;
+
+ EFX_POPULATE_WORD_1(flags,
+ MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_UNLOADING,
+ (unloading == B_TRUE) ? 1 : 0);
+ MCDI_IN_SET_WORD(req, SET_TUNNEL_ENCAP_UDP_PORTS_IN_FLAGS,
+ EFX_WORD_FIELD(flags, EFX_WORD_0));
+
+ MCDI_IN_SET_WORD(req, SET_TUNNEL_ENCAP_UDP_PORTS_IN_NUM_ENTRIES,
+ entries_num);
+
+ for (i = 0; i < entries_num; ++i) {
+ uint16_t mcdi_udp_protocol;
+
+ switch (etcp->etc_udp_entries[i].etue_protocol) {
+ case EFX_TUNNEL_PROTOCOL_VXLAN:
+ mcdi_udp_protocol = TUNNEL_ENCAP_UDP_PORT_ENTRY_VXLAN;
+ break;
+ case EFX_TUNNEL_PROTOCOL_GENEVE:
+ mcdi_udp_protocol = TUNNEL_ENCAP_UDP_PORT_ENTRY_GENEVE;
+ break;
+ default:
+ rc = EINVAL;
+ goto fail1;
+ }
+
+ /*
+ * UDP port is MCDI native little-endian in the request
+ * and EFX_POPULATE_DWORD cares about conversion from
+ * host/CPU byte order to little-endian.
+ */
+ EFX_STATIC_ASSERT(sizeof (efx_dword_t) ==
+ TUNNEL_ENCAP_UDP_PORT_ENTRY_LEN);
+ EFX_POPULATE_DWORD_2(
+ MCDI_IN2(req, efx_dword_t,
+ SET_TUNNEL_ENCAP_UDP_PORTS_IN_ENTRIES)[i],
+ TUNNEL_ENCAP_UDP_PORT_ENTRY_UDP_PORT,
+ etcp->etc_udp_entries[i].etue_port,
+ TUNNEL_ENCAP_UDP_PORT_ENTRY_PROTOCOL,
+ mcdi_udp_protocol);
+ }
+
+ efx_mcdi_execute(enp, &req);
+
+ if (req.emr_rc != 0) {
+ rc = req.emr_rc;
+ goto fail2;
+ }
+
+ if (req.emr_out_length_used !=
+ MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_OUT_LEN) {
+ rc = EMSGSIZE;
+ goto fail3;
+ }
+
+ *resetting = MCDI_OUT_WORD_FIELD(req,
+ SET_TUNNEL_ENCAP_UDP_PORTS_OUT_FLAGS,
+ SET_TUNNEL_ENCAP_UDP_PORTS_OUT_RESETTING);
+
+ return (0);
+
+fail3:
+ EFSYS_PROBE(fail3);
+
+fail2:
+ EFSYS_PROBE(fail2);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_tunnel_init(
+ __in efx_nic_t *enp)
+{
+ efx_tunnel_cfg_t *etcp = &enp->en_tunnel_cfg;
+ const efx_tunnel_ops_t *etop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
+ EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_TUNNEL));
+
+ EFX_STATIC_ASSERT(EFX_TUNNEL_MAXNENTRIES ==
+ MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_ENTRIES_MAXNUM);
+
+ switch (enp->en_family) {
+#if EFSYS_OPT_SIENA
+ case EFX_FAMILY_SIENA:
+ etop = &__efx_tunnel_dummy_ops;
+ break;
+#endif /* EFSYS_OPT_SIENA */
+
+#if EFSYS_OPT_HUNTINGTON
+ case EFX_FAMILY_HUNTINGTON:
+ etop = &__efx_tunnel_dummy_ops;
+ break;
+#endif /* EFSYS_OPT_HUNTINGTON */
+
+#if EFSYS_OPT_MEDFORD
+ case EFX_FAMILY_MEDFORD:
+ etop = &__efx_tunnel_medford_ops;
+ break;
+#endif /* EFSYS_OPT_MEDFORD */
+
+ default:
+ EFSYS_ASSERT(0);
+ rc = ENOTSUP;
+ goto fail1;
+ }
+
+ memset(etcp->etc_udp_entries, 0, sizeof (etcp->etc_udp_entries));
+ etcp->etc_udp_entries_num = 0;
+
+ enp->en_etop = etop;
+ enp->en_mod_flags |= EFX_MOD_TUNNEL;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ enp->en_etop = NULL;
+ enp->en_mod_flags &= ~EFX_MOD_TUNNEL;
+
+ return (rc);
+}
+
+ void
+efx_tunnel_fini(
+ __in efx_nic_t *enp)
+{
+ boolean_t resetting;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_TUNNEL);
+
+ if ((enp->en_etop->eto_udp_encap_supported != NULL) &&
+ enp->en_etop->eto_udp_encap_supported(enp)) {
+ /*
+ * The UNLOADING flag allows the MC to suppress the datapath
+ * reset if it was set on the last call to
+ * MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS by all functions
+ */
+ (void) efx_mcdi_set_tunnel_encap_udp_ports(enp, NULL, B_TRUE,
+ &resetting);
+ }
+
+ enp->en_etop = NULL;
+ enp->en_mod_flags &= ~EFX_MOD_TUNNEL;
+}
+
+static __checkReturn efx_rc_t
+efx_tunnel_config_find_udp_tunnel_entry(
+ __in efx_tunnel_cfg_t *etcp,
+ __in uint16_t port,
+ __out unsigned int *entryp)
+{
+ unsigned int i;
+
+ for (i = 0; i < etcp->etc_udp_entries_num; ++i) {
+ efx_tunnel_udp_entry_t *p = &etcp->etc_udp_entries[i];
+
+ if (p->etue_port == port) {
+ *entryp = i;
+ return (0);
+ }
+ }
+
+ return (ENOENT);
+}
+
+ __checkReturn efx_rc_t
+efx_tunnel_config_udp_add(
+ __in efx_nic_t *enp,
+ __in uint16_t port /* host/cpu-endian */,
+ __in efx_tunnel_protocol_t protocol)
+{
+ const efx_nic_cfg_t *encp = &enp->en_nic_cfg;
+ efx_tunnel_cfg_t *etcp = &enp->en_tunnel_cfg;
+ efsys_lock_state_t state;
+ efx_rc_t rc;
+ unsigned int entry;
+
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_TUNNEL);
+
+ if (protocol >= EFX_TUNNEL_NPROTOS) {
+ rc = EINVAL;
+ goto fail1;
+ }
+
+ if ((encp->enc_tunnel_encapsulations_supported &
+ (1u << protocol)) == 0) {
+ rc = ENOTSUP;
+ goto fail2;
+ }
+
+ EFSYS_LOCK(enp->en_eslp, state);
+
+ rc = efx_tunnel_config_find_udp_tunnel_entry(etcp, port, &entry);
+ if (rc == 0) {
+ rc = EEXIST;
+ goto fail3;
+ }
+
+ if (etcp->etc_udp_entries_num ==
+ encp->enc_tunnel_config_udp_entries_max) {
+ rc = ENOSPC;
+ goto fail4;
+ }
+
+ etcp->etc_udp_entries[etcp->etc_udp_entries_num].etue_port = port;
+ etcp->etc_udp_entries[etcp->etc_udp_entries_num].etue_protocol =
+ protocol;
+
+ etcp->etc_udp_entries_num++;
+
+ EFSYS_UNLOCK(enp->en_eslp, state);
+
+ return (0);
+
+fail4:
+ EFSYS_PROBE(fail4);
+
+fail3:
+ EFSYS_PROBE(fail3);
+ EFSYS_UNLOCK(enp->en_eslp, state);
+
+fail2:
+ EFSYS_PROBE(fail2);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_tunnel_config_udp_remove(
+ __in efx_nic_t *enp,
+ __in uint16_t port /* host/cpu-endian */,
+ __in efx_tunnel_protocol_t protocol)
+{
+ efx_tunnel_cfg_t *etcp = &enp->en_tunnel_cfg;
+ efsys_lock_state_t state;
+ unsigned int entry;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_TUNNEL);
+
+ EFSYS_LOCK(enp->en_eslp, state);
+
+ rc = efx_tunnel_config_find_udp_tunnel_entry(etcp, port, &entry);
+ if (rc != 0)
+ goto fail1;
+
+ if (etcp->etc_udp_entries[entry].etue_protocol != protocol) {
+ rc = EINVAL;
+ goto fail2;
+ }
+
+ EFSYS_ASSERT3U(etcp->etc_udp_entries_num, >, 0);
+ etcp->etc_udp_entries_num--;
+
+ if (entry < etcp->etc_udp_entries_num) {
+ memmove(&etcp->etc_udp_entries[entry],
+ &etcp->etc_udp_entries[entry + 1],
+ (etcp->etc_udp_entries_num - entry) *
+ sizeof (etcp->etc_udp_entries[0]));
+ }
+
+ memset(&etcp->etc_udp_entries[etcp->etc_udp_entries_num], 0,
+ sizeof (etcp->etc_udp_entries[0]));
+
+ EFSYS_UNLOCK(enp->en_eslp, state);
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+ EFSYS_UNLOCK(enp->en_eslp, state);
+
+ return (rc);
+}
+
+ void
+efx_tunnel_config_clear(
+ __in efx_nic_t *enp)
+{
+ efx_tunnel_cfg_t *etcp = &enp->en_tunnel_cfg;
+ efsys_lock_state_t state;
+
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_TUNNEL);
+
+ EFSYS_LOCK(enp->en_eslp, state);
+
+ etcp->etc_udp_entries_num = 0;
+ memset(etcp->etc_udp_entries, 0, sizeof (etcp->etc_udp_entries));
+
+ EFSYS_UNLOCK(enp->en_eslp, state);
+}
+
+ __checkReturn efx_rc_t
+efx_tunnel_reconfigure(
+ __in efx_nic_t *enp)
+{
+ const efx_tunnel_ops_t *etop = enp->en_etop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_TUNNEL);
+
+ if (etop->eto_reconfigure == NULL) {
+ rc = ENOTSUP;
+ goto fail1;
+ }
+
+ if ((rc = enp->en_etop->eto_reconfigure(enp)) != 0)
+ goto fail2;
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+#if EFSYS_OPT_MEDFORD
+static __checkReturn boolean_t
+medford_udp_encap_supported(
+ __in efx_nic_t *enp)
+{
+ const efx_nic_cfg_t *encp = &enp->en_nic_cfg;
+ uint32_t udp_tunnels_mask = 0;
+
+ udp_tunnels_mask |= (1u << EFX_TUNNEL_PROTOCOL_VXLAN);
+ udp_tunnels_mask |= (1u << EFX_TUNNEL_PROTOCOL_GENEVE);
+
+ return ((encp->enc_tunnel_encapsulations_supported &
+ udp_tunnels_mask) == 0 ? B_FALSE : B_TRUE);
+}
+
+static __checkReturn efx_rc_t
+medford_tunnel_reconfigure(
+ __in efx_nic_t *enp)
+{
+ efx_tunnel_cfg_t *etcp = &enp->en_tunnel_cfg;
+ efx_rc_t rc;
+ boolean_t resetting;
+ efsys_lock_state_t state;
+ efx_tunnel_cfg_t etc;
+
+ EFSYS_LOCK(enp->en_eslp, state);
+ memcpy(&etc, etcp, sizeof (etc));
+ EFSYS_UNLOCK(enp->en_eslp, state);
+
+ if (medford_udp_encap_supported(enp) == B_FALSE) {
+ /*
+ * It is OK to apply empty UDP tunnel ports when UDP
+ * tunnel encapsulations are not supported - just nothing
+ * should be done.
+ */
+ if (etc.etc_udp_entries_num == 0)
+ return (0);
+ rc = ENOTSUP;
+ goto fail1;
+ } else {
+ /*
+ * All PCI functions can see a reset upon the
+ * MCDI request completion
+ */
+ rc = efx_mcdi_set_tunnel_encap_udp_ports(enp, &etc, B_FALSE,
+ &resetting);
+ if (rc != 0)
+ goto fail2;
+
+ /*
+ * Although the caller should be able to handle MC reboot,
+ * it might come in handy to report the impending reboot
+ * by returning EAGAIN
+ */
+ return ((resetting) ? EAGAIN : 0);
+ }
+fail2:
+ EFSYS_PROBE(fail2);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+#endif /* EFSYS_OPT_MEDFORD */
+
+#endif /* EFSYS_OPT_TUNNEL */