inpcb: retire inp_vnet

Now that a functional inpcb can not outlive its socket, just use socket's
vnet pointer.

sys/kern/uipc_ktls.c

@@ -1797,7 +1797,7 @@ ktls_reset_send_tag(void *context, int pending)
 		INP_WLOCK(inp);
 		tp = intotcpcb(inp);
 		if (!(tp->t_flags & TF_DISCONNECTED)) {
-			CURVNET_SET(inp->inp_vnet);
+			CURVNET_SET(inp->inp_socket->so_vnet);
 			tp = tcp_drop(tp, ECONNABORTED);
 			CURVNET_RESTORE();
 			if (tp != NULL) {
@@ -2475,7 +2475,7 @@ ktls_drop(struct socket *so, int error)
 	NET_EPOCH_ENTER(et);
 	INP_WLOCK(inp);
 	if (!(tp->t_flags & TF_DISCONNECTED)) {
-		CURVNET_SET(inp->inp_vnet);
+		CURVNET_SET(inp->inp_socket->so_vnet);
 		tp = tcp_drop(tp, error);
 		CURVNET_RESTORE();
 		if (tp != NULL)

sys/netinet/in_pcb.c

@@ -558,9 +558,6 @@ in_pcbinfo_init(struct inpcbinfo *pcbinfo, struct inpcbstorage *pcbstor,
 
 	mtx_init(&pcbinfo->ipi_hash_lock, pcbstor->ips_hashlock_name,
 	    NULL, MTX_DEF);
-#ifdef VIMAGE
-	pcbinfo->ipi_vnet = curvnet;
-#endif
 	CK_LIST_INIT(&pcbinfo->ipi_list_unconn);
 	pcbinfo->ipi_count = 0;
 

sys/netinet/in_pcb.h

@@ -299,7 +299,6 @@ struct xktls_session {
 #include <net/route.h>
 #include <sys/proc.h>
 #include <sys/sysctl.h>
-#include <net/vnet.h>
 #include <vm/uma.h>
 #include <sys/ck.h>
 
@@ -418,8 +417,6 @@ struct inpcb {
 	};
 };
 
-#define	inp_vnet	inp_pcbinfo->ipi_vnet
-
 /*
  * Per-VNET pcb database for each high-level protocol (UDP, TCP, ...) in both
  * IPv4 and IPv6.
@@ -478,11 +475,6 @@ struct inpcbinfo {
 	 * hashed by local port.
 	 */
 	struct	inpcblbgrouphead *ipi_lbgrouphashbase;	/* (r:e/w:h) */
-
-	/*
-	 * Pointer to network stack instance
-	 */
-	struct vnet		*ipi_vnet;		/* (c) */
 };
 
 /*

sys/netinet/tcp_hpts.c

@@ -1359,7 +1359,7 @@ again:
 				 */
 				__tcp_set_hpts(pace, tp);
 			}
-			CURVNET_SET(inp->inp_vnet);
+			CURVNET_SET(inp->inp_socket->so_vnet);
 			/* Lets do any logging that we might want to */
 			tcp_hpts_log(hpts, tp, &tv, slots_to_run, i, from_callout);
 

sys/netinet/tcp_timer.c

@@ -315,7 +315,7 @@ tcp_timer_delack(struct tcpcb *tp)
 
 	INP_WLOCK_ASSERT(inp);
 
-	CURVNET_SET(inp->inp_vnet);
+	CURVNET_SET(inp->inp_socket->so_vnet);
 	tp->t_flags |= TF_ACKNOW;
 	TCPSTAT_INC(tcps_delack);
 	NET_EPOCH_ENTER(et);
@@ -335,7 +335,7 @@ tcp_timer_2msl(struct tcpcb *tp)
 	INP_WLOCK_ASSERT(inp);
 
 	TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
-	CURVNET_SET(inp->inp_vnet);
+	CURVNET_SET(inp->inp_socket->so_vnet);
 	tcp_log_end_status(tp, TCP_EI_STATUS_2MSL);
 	tcp_free_sackholes(tp);
 	/*
@@ -385,7 +385,7 @@ tcp_timer_keep(struct tcpcb *tp)
 	INP_WLOCK_ASSERT(inp);
 
 	TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
-	CURVNET_SET(inp->inp_vnet);
+	CURVNET_SET(inp->inp_socket->so_vnet);
 	/*
 	 * Because we don't regularly reset the keepalive callout in
 	 * the ESTABLISHED state, it may be that we don't actually need
@@ -493,7 +493,7 @@ tcp_timer_persist(struct tcpcb *tp)
 	INP_WLOCK_ASSERT(inp);
 
 	TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
-	CURVNET_SET(inp->inp_vnet);
+	CURVNET_SET(inp->inp_socket->so_vnet);
 	/*
 	 * Persistence timer into zero window.
 	 * Force a byte to be output, if possible.
@@ -560,7 +560,7 @@ tcp_timer_rexmt(struct tcpcb *tp)
 	INP_WLOCK_ASSERT(inp);
 
 	TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);
-	CURVNET_SET(inp->inp_vnet);
+	CURVNET_SET(inp->inp_socket->so_vnet);
 	if (tp->t_fb->tfb_tcp_rexmit_tmr) {
 		/* The stack has a timer action too. */
 		(*tp->t_fb->tfb_tcp_rexmit_tmr)(tp);