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Index: head/sys/dev/sfxge/common/ef10_impl.h
===================================================================
--- head/sys/dev/sfxge/common/ef10_impl.h
+++ head/sys/dev/sfxge/common/ef10_impl.h
@@ -236,6 +236,11 @@
__in efx_nic_t *enp);
extern __checkReturn efx_rc_t
+ef10_mac_pdu_get(
+ __in efx_nic_t *enp,
+ __out size_t *pdu);
+
+extern __checkReturn efx_rc_t
ef10_mac_reconfigure(
__in efx_nic_t *enp);
Index: head/sys/dev/sfxge/common/ef10_mac.c
===================================================================
--- head/sys/dev/sfxge/common/ef10_mac.c
+++ head/sys/dev/sfxge/common/ef10_mac.c
@@ -199,6 +199,53 @@
return (rc);
}
+static __checkReturn efx_rc_t
+efx_mcdi_mtu_get(
+ __in efx_nic_t *enp,
+ __out size_t *mtu)
+{
+ efx_mcdi_req_t req;
+ uint8_t payload[MAX(MC_CMD_SET_MAC_EXT_IN_LEN,
+ MC_CMD_SET_MAC_V2_OUT_LEN)];
+ efx_rc_t rc;
+
+ (void) memset(payload, 0, sizeof (payload));
+ req.emr_cmd = MC_CMD_SET_MAC;
+ req.emr_in_buf = payload;
+ req.emr_in_length = MC_CMD_SET_MAC_EXT_IN_LEN;
+ req.emr_out_buf = payload;
+ req.emr_out_length = MC_CMD_SET_MAC_V2_OUT_LEN;
+
+ /*
+ * With MC_CMD_SET_MAC_EXT_IN_CONTROL set to 0, this just queries the
+ * MTU. This should always be supported on Medford, but it is not
+ * supported on older Huntington firmware.
+ */
+ MCDI_IN_SET_DWORD(req, SET_MAC_EXT_IN_CONTROL, 0);
+
+ efx_mcdi_execute(enp, &req);
+
+ if (req.emr_rc != 0) {
+ rc = req.emr_rc;
+ goto fail1;
+ }
+ if (req.emr_out_length_used < MC_CMD_SET_MAC_V2_OUT_MTU_OFST + 4) {
+ rc = EMSGSIZE;
+ goto fail2;
+ }
+
+ *mtu = MCDI_OUT_DWORD(req, SET_MAC_V2_OUT_MTU);
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
__checkReturn efx_rc_t
ef10_mac_pdu_set(
__in efx_nic_t *enp)
@@ -230,6 +277,24 @@
return (rc);
}
+ __checkReturn efx_rc_t
+ef10_mac_pdu_get(
+ __in efx_nic_t *enp,
+ __out size_t *pdu)
+{
+ efx_rc_t rc;
+
+ if ((rc = efx_mcdi_mtu_get(enp, pdu)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
__checkReturn efx_rc_t
ef10_mac_reconfigure(
__in efx_nic_t *enp)
Index: head/sys/dev/sfxge/common/efx.h
===================================================================
--- head/sys/dev/sfxge/common/efx.h
+++ head/sys/dev/sfxge/common/efx.h
@@ -442,18 +442,30 @@
#define EFX_MAC_SDU_MAX 9202
-#define EFX_MAC_PDU(_sdu) \
- P2ROUNDUP(((_sdu) \
- + /* EtherII */ 14 \
- + /* VLAN */ 4 \
- + /* CRC */ 4 \
- + /* bug16011 */ 16), \
- (1 << 3))
+#define EFX_MAC_PDU_ADJUSTMENT \
+ (/* EtherII */ 14 \
+ + /* VLAN */ 4 \
+ + /* CRC */ 4 \
+ + /* bug16011 */ 16) \
+
+#define EFX_MAC_PDU(_sdu) \
+ P2ROUNDUP((_sdu) + EFX_MAC_PDU_ADJUSTMENT, 8)
+
+/*
+ * Due to the P2ROUNDUP in EFX_MAC_PDU(), EFX_MAC_SDU_FROM_PDU() may give
+ * the SDU rounded up slightly.
+ */
+#define EFX_MAC_SDU_FROM_PDU(_pdu) ((_pdu) - EFX_MAC_PDU_ADJUSTMENT)
#define EFX_MAC_PDU_MIN 60
#define EFX_MAC_PDU_MAX EFX_MAC_PDU(EFX_MAC_SDU_MAX)
extern __checkReturn efx_rc_t
+efx_mac_pdu_get(
+ __in efx_nic_t *enp,
+ __out size_t *pdu);
+
+extern __checkReturn efx_rc_t
efx_mac_pdu_set(
__in efx_nic_t *enp,
__in size_t pdu);
Index: head/sys/dev/sfxge/common/efx_impl.h
===================================================================
--- head/sys/dev/sfxge/common/efx_impl.h
+++ head/sys/dev/sfxge/common/efx_impl.h
@@ -183,6 +183,7 @@
efx_rc_t (*emo_up)(efx_nic_t *, boolean_t *);
efx_rc_t (*emo_addr_set)(efx_nic_t *);
efx_rc_t (*emo_pdu_set)(efx_nic_t *);
+ efx_rc_t (*emo_pdu_get)(efx_nic_t *, size_t *);
efx_rc_t (*emo_reconfigure)(efx_nic_t *);
efx_rc_t (*emo_multicast_list_set)(efx_nic_t *);
efx_rc_t (*emo_filter_default_rxq_set)(efx_nic_t *,
Index: head/sys/dev/sfxge/common/efx_mac.c
===================================================================
--- head/sys/dev/sfxge/common/efx_mac.c
+++ head/sys/dev/sfxge/common/efx_mac.c
@@ -48,6 +48,7 @@
siena_mac_up, /* emo_up */
siena_mac_reconfigure, /* emo_addr_set */
siena_mac_reconfigure, /* emo_pdu_set */
+ siena_mac_pdu_get, /* emo_pdu_get */
siena_mac_reconfigure, /* emo_reconfigure */
siena_mac_multicast_list_set, /* emo_multicast_list_set */
NULL, /* emo_filter_set_default_rxq */
@@ -69,6 +70,7 @@
ef10_mac_up, /* emo_up */
ef10_mac_addr_set, /* emo_addr_set */
ef10_mac_pdu_set, /* emo_pdu_set */
+ ef10_mac_pdu_get, /* emo_pdu_get */
ef10_mac_reconfigure, /* emo_reconfigure */
ef10_mac_multicast_list_set, /* emo_multicast_list_set */
ef10_mac_filter_default_rxq_set, /* emo_filter_default_rxq_set */
@@ -85,7 +87,6 @@
};
#endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */
-
__checkReturn efx_rc_t
efx_mac_pdu_set(
__in efx_nic_t *enp,
@@ -130,6 +131,26 @@
return (rc);
}
+ __checkReturn efx_rc_t
+efx_mac_pdu_get(
+ __in efx_nic_t *enp,
+ __out size_t *pdu)
+{
+ efx_port_t *epp = &(enp->en_port);
+ const efx_mac_ops_t *emop = epp->ep_emop;
+ efx_rc_t rc;
+
+ if ((rc = emop->emo_pdu_get(enp, pdu)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
__checkReturn efx_rc_t
efx_mac_addr_set(
__in efx_nic_t *enp,
Index: head/sys/dev/sfxge/common/siena_impl.h
===================================================================
--- head/sys/dev/sfxge/common/siena_impl.h
+++ head/sys/dev/sfxge/common/siena_impl.h
@@ -388,6 +388,11 @@
siena_mac_reconfigure(
__in efx_nic_t *enp);
+extern __checkReturn efx_rc_t
+siena_mac_pdu_get(
+ __in efx_nic_t *enp,
+ __out size_t *pdu);
+
#if EFSYS_OPT_LOOPBACK
extern __checkReturn efx_rc_t
Index: head/sys/dev/sfxge/common/siena_mac.c
===================================================================
--- head/sys/dev/sfxge/common/siena_mac.c
+++ head/sys/dev/sfxge/common/siena_mac.c
@@ -432,4 +432,12 @@
#endif /* EFSYS_OPT_MAC_STATS */
+ __checkReturn efx_rc_t
+siena_mac_pdu_get(
+ __in efx_nic_t *enp,
+ __out size_t *pdu)
+{
+ return (ENOTSUP);
+}
+
#endif /* EFSYS_OPT_SIENA */

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