Allow cxgb to be unified across versions by making newer features conditional

Submitted by:	Chelsio Inc
MFC after:	3 days

sys/dev/cxgb/cxgb_adapter.h

@@ -46,7 +46,6 @@ $FreeBSD$
 #include <net/if.h>
 #include <net/if_media.h>
 #include <net/if_dl.h>
-#include <netinet/tcp_lro.h>
 
 #include <machine/bus.h>
 #include <machine/resource.h>
@@ -68,6 +67,10 @@ $FreeBSD$
 #include <dev/cxgb/ulp/toecore/cxgb_toedev.h>
 #endif
 
+#ifdef LRO_SUPPORTED
+#include <netinet/tcp_lro.h>
+#endif
+
 #define USE_SX
 
 struct adapter;
@@ -163,10 +166,12 @@ enum { TXQ_ETH = 0,
 #define WR_LEN (WR_FLITS * 8)
 #define PIO_LEN (WR_LEN - sizeof(struct cpl_tx_pkt_lso))
 
+#ifdef LRO_SUPPORTED
 struct lro_state {
 	unsigned short enabled;
 	struct lro_ctrl ctrl;
 };
+#endif
 
 #define RX_BUNDLE_SIZE 8
 
@@ -295,7 +300,9 @@ enum {
 struct sge_qset {
 	struct sge_rspq		rspq;
 	struct sge_fl		fl[SGE_RXQ_PER_SET];
+#ifdef LRO_SUPPORTED
 	struct lro_state        lro;
+#endif
 	struct sge_txq		txq[SGE_TXQ_PER_SET];
 	uint32_t                txq_stopped;       /* which Tx queues are stopped */
 	uint64_t                port_stats[SGE_PSTAT_MAX];

sys/dev/cxgb/cxgb_main.c

@@ -876,6 +876,12 @@ cxgb_makedev(struct port_info *pi)
 	return (0);
 }
 
+#ifndef LRO_SUPPORTED
+#ifdef IFCAP_LRO
+#undef IFCAP_LRO
+#endif
+#define IFCAP_LRO 0x0
+#endif
 
 #ifdef TSO_SUPPORTED
 #define CXGB_CAP (IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM | IFCAP_TSO | IFCAP_JUMBO_MTU | IFCAP_LRO)
@@ -1899,6 +1905,7 @@ cxgb_set_mtu(struct port_info *p, int mtu)
 	return (error);
 }
 
+#ifdef LRO_SUPPORTED
 /*
  * Mark lro enabled or disabled in all qsets for this port
  */
@@ -1916,6 +1923,7 @@ cxgb_set_lro(struct port_info *p, int enabled)
 	}
 	return (0);
 }
+#endif
 
 static int
 cxgb_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
@@ -2002,12 +2010,14 @@ cxgb_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
 				error = EINVAL;
 			}
 		}
+#ifdef LRO_SUPPORTED
 		if (mask & IFCAP_LRO) {
 			ifp->if_capenable ^= IFCAP_LRO;
 
 			/* Safe to do this even if cxgb_up not called yet */
 			cxgb_set_lro(p, ifp->if_capenable & IFCAP_LRO);
 		}
+#endif
 		if (mask & IFCAP_VLAN_HWTAGGING) {
 			ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
 			reinit = ifp->if_drv_flags & IFF_DRV_RUNNING;

sys/dev/cxgb/cxgb_multiq.c

@@ -635,7 +635,11 @@ cxgb_pcpu_start_proc(void *arg)
 	t3_free_qset(qs->port->adapter, qs);
 
 	qs->qs_flags &= ~QS_RUNNING;
+#if __FreeBSD_version >= 800002
 	kproc_exit(0);
+#else
+	kthread_exit(0);
+#endif
 }
 
 #ifdef IFNET_MULTIQUEUE
@@ -680,8 +684,13 @@ cxgb_pcpu_startup_threads(struct adapter *sc)
 			device_printf(sc->dev, "starting thread for %d\n",
 			    qs->qs_cpuid);
 
+#if __FreeBSD_version >= 800002
 			kproc_create(cxgb_pcpu_start_proc, qs, &p,
 			    RFNOWAIT, 0, "cxgbsp");
+#else
+			kthread_create(cxgb_pcpu_start_proc, qs, &p,
+			    RFNOWAIT, 0, "cxgbsp");
+#endif
 			DELAY(200);
 		}
 	}

sys/dev/cxgb/cxgb_osdep.h

@@ -114,6 +114,11 @@ struct t3_mbuf_hdr {
 #define M_SANITY(m, n)
 #endif
 
+#if __FreeBSD_version >= 701000
+#define LRO_SUPPORTED
+#define TOE_SUPPORTED
+#endif
+
 #define __read_mostly __attribute__((__section__(".data.read_mostly")))
 
 /*

sys/dev/cxgb/cxgb_sge.c

@@ -1775,7 +1775,9 @@ t3_free_qset(adapter_t *sc, struct sge_qset *q)
 		MTX_DESTROY(&q->rspq.lock);
 	}
 
+#ifdef LRO_SUPPORTED
 	tcp_lro_free(&q->lro.ctrl);
+#endif
 
 	bzero(q, sizeof(*q));
 }
@@ -2387,10 +2389,8 @@ t3_sge_alloc_qset(adapter_t *sc, u_int id, int nports, int irq_vec_idx,
 	q->fl[1].type = EXT_JUMBOP;
 #endif
 
-	/*
-	 * We allocate and setup the lro_ctrl structure irrespective of whether
-	 * lro is available and/or enabled.
-	 */
+#ifdef LRO_SUPPORTED
+	/* Allocate and setup the lro_ctrl structure */
 	q->lro.enabled = !!(pi->ifp->if_capenable & IFCAP_LRO);
 	ret = tcp_lro_init(&q->lro.ctrl);
 	if (ret) {
@@ -2398,6 +2398,7 @@ t3_sge_alloc_qset(adapter_t *sc, u_int id, int nports, int irq_vec_idx,
 		goto err;
 	}
 	q->lro.ctrl.ifp = pi->ifp;
+#endif
 
 	mtx_lock_spin(&sc->sge.reg_lock);
 	ret = -t3_sge_init_rspcntxt(sc, q->rspq.cntxt_id, irq_vec_idx,
@@ -2555,8 +2556,12 @@ init_cluster_mbuf(caddr_t cl, int flags, int type, uma_zone_t zone)
 	m->m_ext.ref_cnt = (uint32_t *)(cl + header_size - sizeof(uint32_t));
 	m->m_ext.ext_size = m_getsizefromtype(type);
 	m->m_ext.ext_free = ext_free_handler;
+#if __FreeBSD_version >= 800016
 	m->m_ext.ext_arg1 = cl;
 	m->m_ext.ext_arg2 = (void *)(uintptr_t)type;
+#else
+	m->m_ext.ext_args = (void *)(uintptr_t)type;
+#endif
 	m->m_ext.ext_type = EXT_EXTREF;
 	*(m->m_ext.ref_cnt) = 1;
 	DPRINTF("data=%p ref_cnt=%p\n", m->m_data, m->m_ext.ref_cnt); 
@@ -2803,8 +2808,10 @@ process_responses(adapter_t *adap, struct sge_qset *qs, int budget)
 	struct rsp_desc *r = &rspq->desc[rspq->cidx];
 	int budget_left = budget;
 	unsigned int sleeping = 0;
+#ifdef LRO_SUPPORTED
 	int lro_enabled = qs->lro.enabled;
 	struct lro_ctrl *lro_ctrl = &qs->lro.ctrl;
+#endif
 	struct mbuf *offload_mbufs[RX_BUNDLE_SIZE];
 	int ngathered = 0;
 #ifdef DEBUG	
@@ -2922,10 +2929,13 @@ process_responses(adapter_t *adap, struct sge_qset *qs, int budget)
 			prefetch(mtod(m, uint8_t *) + L1_CACHE_BYTES);
 
 			t3_rx_eth(adap, rspq, m, ethpad);
+#ifdef LRO_SUPPORTED
 			if (lro_enabled && lro_ctrl->lro_cnt &&
 			    (tcp_lro_rx(lro_ctrl, m, 0) == 0)) {
 				/* successfully queue'd for LRO */
-			} else {
+			} else
+#endif
+			{
 				/*
 				 * LRO not enabled, packet unsuitable for LRO,
 				 * or unable to queue.  Pass it up right now in
@@ -2945,12 +2955,14 @@ process_responses(adapter_t *adap, struct sge_qset *qs, int budget)
 
 	deliver_partial_bundle(&adap->tdev, rspq, offload_mbufs, ngathered);
 
+#ifdef LRO_SUPPORTED
 	/* Flush LRO */
 	while (!SLIST_EMPTY(&lro_ctrl->lro_active)) {
 		struct lro_entry *queued = SLIST_FIRST(&lro_ctrl->lro_active);
 		SLIST_REMOVE_HEAD(&lro_ctrl->lro_active, next);
 		tcp_lro_flush(lro_ctrl, queued);
 	}
+#endif
 
 	if (sleeping)
 		check_ring_db(adap, qs, sleeping);
@@ -3547,6 +3559,7 @@ t3_add_configured_sysctls(adapter_t *sc)
 			    CTLTYPE_STRING | CTLFLAG_RD, &qs->txq[TXQ_CTRL],
 			    0, t3_dump_txq_ctrl, "A", "dump of the transmit queue");
 
+#ifdef LRO_SUPPORTED
 			SYSCTL_ADD_INT(ctx, lropoidlist, OID_AUTO, "lro_queued",
 			    CTLFLAG_RD, &qs->lro.ctrl.lro_queued, 0, NULL);
 			SYSCTL_ADD_INT(ctx, lropoidlist, OID_AUTO, "lro_flushed",
@@ -3555,6 +3568,7 @@ t3_add_configured_sysctls(adapter_t *sc)
 			    CTLFLAG_RD, &qs->lro.ctrl.lro_bad_csum, 0, NULL);
 			SYSCTL_ADD_INT(ctx, lropoidlist, OID_AUTO, "lro_cnt",
 			    CTLFLAG_RD, &qs->lro.ctrl.lro_cnt, 0, NULL);
+#endif
 		}
 
 		/* Now add a node for mac stats. */

sys/dev/cxgb/ulp/iw_cxgb/iw_cxgb.c

@@ -53,7 +53,12 @@ __FBSDID("$FreeBSD$");
 #include <sys/taskqueue.h>
 #include <sys/proc.h>
 #include <sys/eventhandler.h>
+
+#if __FreeBSD_version >= 800044
 #include <sys/vimage.h>
+#else
+#define V_ifnet ifnet
+#endif
 
 #include <net/if.h>
 #include <net/if_var.h>

sys/dev/cxgb/ulp/tom/cxgb_cpl_io.c

@@ -47,7 +47,17 @@ __FBSDID("$FreeBSD$");
 #include <sys/syslog.h>
 #include <sys/protosw.h>
 #include <sys/priv.h>
+
+#if __FreeBSD_version >= 800044
 #include <sys/vimage.h>
+#else
+#define V_tcp_do_autosndbuf tcp_do_autosndbuf
+#define V_tcp_autosndbuf_max tcp_autosndbuf_max
+#define V_tcp_do_rfc1323 tcp_do_rfc1323
+#define V_tcp_do_autorcvbuf tcp_do_autorcvbuf
+#define V_tcp_autorcvbuf_max tcp_autorcvbuf_max
+#define V_tcpstat tcpstat
+#endif
 
 #include <net/if.h>
 #include <net/route.h>

sys/dev/cxgb/ulp/tom/cxgb_cpl_socket.c

@@ -368,8 +368,12 @@ cxgb_vm_page_to_miov(struct toepcb *toep, struct uio *uio, struct mbuf **m)
 	m0->m_flags = (M_EXT|M_NOFREE);
 	m0->m_ext.ext_type = EXT_EXTREF;
 	m0->m_ext.ext_free = cxgb_zero_copy_free;
+#if __FreeBSD_version >= 800016
 	m0->m_ext.ext_arg1 = NULL;	/* XXX: probably wrong /phk */
 	m0->m_ext.ext_arg2 = NULL;
+#else
+	m0->m_ext.ext_args = NULL;
+#endif
     
 	mv = mtomv(m0);
 	mv->mv_count = seg_count;