Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Lots of conflicts, by happily all cases of overlapping
changes, parallel adds, things of that nature.

Thanks to Stephen Rothwell, Saeed Mahameed, and others
for their guidance in these resolutions.

Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 130 insertions, 80 deletions

diff --git a/drivers/crypto/chelsio/chtls/chtls.h b/drivers/crypto/chelsio/chtls/chtls.h
index 7725b6ee14efb..59bb67d5a7ced 100644
--- a/drivers/crypto/chelsio/chtls/chtls.h
+++ b/drivers/crypto/chelsio/chtls/chtls.h
@@ -153,6 +153,11 @@ struct chtls_dev {
 	unsigned int cdev_state;
 };
 
+struct chtls_listen {
+	struct chtls_dev *cdev;
+	struct sock *sk;
+};
+
 struct chtls_hws {
 	struct sk_buff_head sk_recv_queue;
 	u8 txqid;
@@ -215,6 +220,8 @@ struct chtls_sock {
 	u16 resv2;
 	u32 delack_mode;
 	u32 delack_seq;
+	u32 snd_win;
+	u32 rcv_win;
 
 	void *passive_reap_next;        /* placeholder for passive */
 	struct chtls_hws tlshws;
diff --git a/drivers/crypto/chelsio/chtls/chtls_cm.c b/drivers/crypto/chelsio/chtls/chtls_cm.c
index 228b91b7d6b5b..59b75299fcbca 100644
--- a/drivers/crypto/chelsio/chtls/chtls_cm.c
+++ b/drivers/crypto/chelsio/chtls/chtls_cm.c
@@ -21,6 +21,7 @@
 #include <linux/kallsyms.h>
 #include <linux/kprobes.h>
 #include <linux/if_vlan.h>
+#include <net/inet_common.h>
 #include <net/tcp.h>
 #include <net/dst.h>
 
@@ -887,24 +888,6 @@ static unsigned int chtls_select_mss(const struct chtls_sock *csk,
 	return mtu_idx;
 }
 
-static unsigned int select_rcv_wnd(struct chtls_sock *csk)
-{
-	unsigned int rcvwnd;
-	unsigned int wnd;
-	struct sock *sk;
-
-	sk = csk->sk;
-	wnd = tcp_full_space(sk);
-
-	if (wnd < MIN_RCV_WND)
-		wnd = MIN_RCV_WND;
-
-	rcvwnd = MAX_RCV_WND;
-
-	csk_set_flag(csk, CSK_UPDATE_RCV_WND);
-	return min(wnd, rcvwnd);
-}
-
 static unsigned int select_rcv_wscale(int space, int wscale_ok, int win_clamp)
 {
 	int wscale = 0;
@@ -951,7 +934,7 @@ static void chtls_pass_accept_rpl(struct sk_buff *skb,
 	csk->mtu_idx = chtls_select_mss(csk, dst_mtu(__sk_dst_get(sk)),
 					req);
 	opt0 = TCAM_BYPASS_F |
-	       WND_SCALE_V((tp)->rx_opt.rcv_wscale) |
+	       WND_SCALE_V(RCV_WSCALE(tp)) |
 	       MSS_IDX_V(csk->mtu_idx) |
 	       L2T_IDX_V(csk->l2t_entry->idx) |
 	       NAGLE_V(!(tp->nonagle & TCP_NAGLE_OFF)) |
@@ -1005,6 +988,25 @@ static int chtls_backlog_rcv(struct sock *sk, struct sk_buff *skb)
 	return 0;
 }
 
+static void chtls_set_tcp_window(struct chtls_sock *csk)
+{
+	struct net_device *ndev = csk->egress_dev;
+	struct port_info *pi = netdev_priv(ndev);
+	unsigned int linkspeed;
+	u8 scale;
+
+	linkspeed = pi->link_cfg.speed;
+	scale = linkspeed / SPEED_10000;
+#define CHTLS_10G_RCVWIN (256 * 1024)
+	csk->rcv_win = CHTLS_10G_RCVWIN;
+	if (scale)
+		csk->rcv_win *= scale;
+#define CHTLS_10G_SNDWIN (256 * 1024)
+	csk->snd_win = CHTLS_10G_SNDWIN;
+	if (scale)
+		csk->snd_win *= scale;
+}
+
 static struct sock *chtls_recv_sock(struct sock *lsk,
 				    struct request_sock *oreq,
 				    void *network_hdr,
@@ -1067,6 +1069,9 @@ static struct sock *chtls_recv_sock(struct sock *lsk,
 	csk->port_id = port_id;
 	csk->egress_dev = ndev;
 	csk->tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid));
+	chtls_set_tcp_window(csk);
+	tp->rcv_wnd = csk->rcv_win;
+	csk->sndbuf = csk->snd_win;
 	csk->ulp_mode = ULP_MODE_TLS;
 	step = cdev->lldi->nrxq / cdev->lldi->nchan;
 	csk->rss_qid = cdev->lldi->rxq_ids[port_id * step];
@@ -1075,9 +1080,9 @@ static struct sock *chtls_recv_sock(struct sock *lsk,
 			port_id * step;
 	csk->sndbuf = newsk->sk_sndbuf;
 	csk->smac_idx = ((struct port_info *)netdev_priv(ndev))->smt_idx;
-	tp->rcv_wnd = select_rcv_wnd(csk);
 	RCV_WSCALE(tp) = select_rcv_wscale(tcp_full_space(newsk),
-					   WSCALE_OK(tp),
+					   sock_net(newsk)->
+						ipv4.sysctl_tcp_window_scaling,
 					   tp->window_clamp);
 	neigh_release(n);
 	inet_inherit_port(&tcp_hashinfo, lsk, newsk);
@@ -1129,6 +1134,7 @@ static void chtls_pass_accept_request(struct sock *sk,
 	struct cpl_t5_pass_accept_rpl *rpl;
 	struct cpl_pass_accept_req *req;
 	struct listen_ctx *listen_ctx;
+	struct vlan_ethhdr *vlan_eh;
 	struct request_sock *oreq;
 	struct sk_buff *reply_skb;
 	struct chtls_sock *csk;
@@ -1141,6 +1147,10 @@ static void chtls_pass_accept_request(struct sock *sk,
 	unsigned int stid;
 	unsigned int len;
 	unsigned int tid;
+	bool th_ecn, ect;
+	__u8 ip_dsfield; /* IPv4 tos or IPv6 dsfield */
+	u16 eth_hdr_len;
+	bool ecn_ok;
 
 	req = cplhdr(skb) + RSS_HDR;
 	tid = GET_TID(req);
@@ -1179,24 +1189,40 @@ static void chtls_pass_accept_request(struct sock *sk,
 	oreq->mss = 0;
 	oreq->ts_recent = 0;
 
-	eh = (struct ethhdr *)(req + 1);
-	iph = (struct iphdr *)(eh + 1);
+	eth_hdr_len = T6_ETH_HDR_LEN_G(ntohl(req->hdr_len));
+	if (eth_hdr_len == ETH_HLEN) {
+		eh = (struct ethhdr *)(req + 1);
+		iph = (struct iphdr *)(eh + 1);
+		network_hdr = (void *)(eh + 1);
+	} else {
+		vlan_eh = (struct vlan_ethhdr *)(req + 1);
+		iph = (struct iphdr *)(vlan_eh + 1);
+		network_hdr = (void *)(vlan_eh + 1);
+	}
 	if (iph->version != 0x4)
 		goto free_oreq;
 
-	network_hdr = (void *)(eh + 1);
 	tcph = (struct tcphdr *)(iph + 1);
+	skb_set_network_header(skb, (void *)iph - (void *)req);
 
 	tcp_rsk(oreq)->tfo_listener = false;
 	tcp_rsk(oreq)->rcv_isn = ntohl(tcph->seq);
 	chtls_set_req_port(oreq, tcph->source, tcph->dest);
-	inet_rsk(oreq)->ecn_ok = 0;
 	chtls_set_req_addr(oreq, iph->daddr, iph->saddr);
-	if (req->tcpopt.wsf <= 14) {
+	ip_dsfield = ipv4_get_dsfield(iph);
+	if (req->tcpopt.wsf <= 14 &&
+	    sock_net(sk)->ipv4.sysctl_tcp_window_scaling) {
 		inet_rsk(oreq)->wscale_ok = 1;
 		inet_rsk(oreq)->snd_wscale = req->tcpopt.wsf;
 	}
 	inet_rsk(oreq)->ir_iif = sk->sk_bound_dev_if;
+	th_ecn = tcph->ece && tcph->cwr;
+	if (th_ecn) {
+		ect = !INET_ECN_is_not_ect(ip_dsfield);
+		ecn_ok = sock_net(sk)->ipv4.sysctl_tcp_ecn;
+		if ((!ect && ecn_ok) || tcp_ca_needs_ecn(sk))
+			inet_rsk(oreq)->ecn_ok = 1;
+	}
 
 	newsk = chtls_recv_sock(sk, oreq, network_hdr, req, cdev);
 	if (!newsk)
diff --git a/drivers/crypto/chelsio/chtls/chtls_io.c b/drivers/crypto/chelsio/chtls/chtls_io.c
index afebbd87c4aa1..18f553fcc1673 100644
--- a/drivers/crypto/chelsio/chtls/chtls_io.c
+++ b/drivers/crypto/chelsio/chtls/chtls_io.c
@@ -397,7 +397,7 @@ static void tls_tx_data_wr(struct sock *sk, struct sk_buff *skb,
 
 	req_wr->lsodisable_to_flags =
 			htonl(TX_ULP_MODE_V(ULP_MODE_TLS) |
-			      FW_OFLD_TX_DATA_WR_URGENT_V(skb_urgent(skb)) |
+			      TX_URG_V(skb_urgent(skb)) |
 			      T6_TX_FORCE_F | wr_ulp_mode_force |
 			      TX_SHOVE_V((!csk_flag(sk, CSK_TX_MORE_DATA)) &&
 					 skb_queue_empty(&csk->txq)));
@@ -534,10 +534,9 @@ static void make_tx_data_wr(struct sock *sk, struct sk_buff *skb,
 				FW_OFLD_TX_DATA_WR_SHOVE_F);
 
 	req->tunnel_to_proxy = htonl(wr_ulp_mode_force |
-			FW_OFLD_TX_DATA_WR_URGENT_V(skb_urgent(skb)) |
-			FW_OFLD_TX_DATA_WR_SHOVE_V((!csk_flag
-					(sk, CSK_TX_MORE_DATA)) &&
-					 skb_queue_empty(&csk->txq)));
+			TX_URG_V(skb_urgent(skb)) |
+			TX_SHOVE_V((!csk_flag(sk, CSK_TX_MORE_DATA)) &&
+				   skb_queue_empty(&csk->txq)));
 	req->plen = htonl(len);
 }
 
@@ -995,7 +994,6 @@ int chtls_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 	int mss, flags, err;
 	int recordsz = 0;
 	int copied = 0;
-	int hdrlen = 0;
 	long timeo;
 
 	lock_sock(sk);
@@ -1032,7 +1030,7 @@ int chtls_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 
 			recordsz = tls_header_read(&hdr, &msg->msg_iter);
 			size -= TLS_HEADER_LENGTH;
-			hdrlen += TLS_HEADER_LENGTH;
+			copied += TLS_HEADER_LENGTH;
 			csk->tlshws.txleft = recordsz;
 			csk->tlshws.type = hdr.type;
 			if (skb)
@@ -1083,10 +1081,8 @@ new_buf:
 			int off = TCP_OFF(sk);
 			bool merge;
 
-			if (!page)
-				goto wait_for_memory;
-
-			pg_size <<= compound_order(page);
+			if (page)
+				pg_size <<= compound_order(page);
 			if (off < pg_size &&
 			    skb_can_coalesce(skb, i, page, off)) {
 				merge = 1;
@@ -1187,7 +1183,7 @@ out:
 		chtls_tcp_push(sk, flags);
 done:
 	release_sock(sk);
-	return copied + hdrlen;
+	return copied;
 do_fault:
 	if (!skb->len) {
 		__skb_unlink(skb, &csk->txq);
diff --git a/drivers/crypto/chelsio/chtls/chtls_main.c b/drivers/crypto/chelsio/chtls/chtls_main.c
index f472c51abe56a..563f8fe7686ad 100644
--- a/drivers/crypto/chelsio/chtls/chtls_main.c
+++ b/drivers/crypto/chelsio/chtls/chtls_main.c
@@ -55,24 +55,19 @@ static void unregister_listen_notifier(struct notifier_block *nb)
 static int listen_notify_handler(struct notifier_block *this,
 				 unsigned long event, void *data)
 {
-	struct chtls_dev *cdev;
-	struct sock *sk;
-	int ret;
+	struct chtls_listen *clisten;
+	int ret = NOTIFY_DONE;
 
-	sk = data;
-	ret =  NOTIFY_DONE;
+	clisten = (struct chtls_listen *)data;
 
 	switch (event) {
 	case CHTLS_LISTEN_START:
+		ret = chtls_listen_start(clisten->cdev, clisten->sk);
+		kfree(clisten);
+		break;
 	case CHTLS_LISTEN_STOP:
-		mutex_lock(&cdev_list_lock);
-		list_for_each_entry(cdev, &cdev_list, list) {
-			if (event == CHTLS_LISTEN_START)
-				ret = chtls_listen_start(cdev, sk);
-			else
-				chtls_listen_stop(cdev, sk);
-		}
-		mutex_unlock(&cdev_list_lock);
+		chtls_listen_stop(clisten->cdev, clisten->sk);
+		kfree(clisten);
 		break;
 	}
 	return ret;
@@ -90,8 +85,9 @@ static int listen_backlog_rcv(struct sock *sk, struct sk_buff *skb)
 	return 0;
 }
 
-static int chtls_start_listen(struct sock *sk)
+static int chtls_start_listen(struct chtls_dev *cdev, struct sock *sk)
 {
+	struct chtls_listen *clisten;
 	int err;
 
 	if (sk->sk_protocol != IPPROTO_TCP)
@@ -102,21 +98,33 @@ static int chtls_start_listen(struct sock *sk)
 		return -EADDRNOTAVAIL;
 
 	sk->sk_backlog_rcv = listen_backlog_rcv;
+	clisten = kmalloc(sizeof(*clisten), GFP_KERNEL);
+	if (!clisten)
+		return -ENOMEM;
+	clisten->cdev = cdev;
+	clisten->sk = sk;
 	mutex_lock(&notify_mutex);
 	err = raw_notifier_call_chain(&listen_notify_list,
-				      CHTLS_LISTEN_START, sk);
+				      CHTLS_LISTEN_START, clisten);
 	mutex_unlock(&notify_mutex);
 	return err;
 }
 
-static void chtls_stop_listen(struct sock *sk)
+static void chtls_stop_listen(struct chtls_dev *cdev, struct sock *sk)
 {
+	struct chtls_listen *clisten;
+
 	if (sk->sk_protocol != IPPROTO_TCP)
 		return;
 
+	clisten = kmalloc(sizeof(*clisten), GFP_KERNEL);
+	if (!clisten)
+		return;
+	clisten->cdev = cdev;
+	clisten->sk = sk;
 	mutex_lock(&notify_mutex);
 	raw_notifier_call_chain(&listen_notify_list,
-				CHTLS_LISTEN_STOP, sk);
+				CHTLS_LISTEN_STOP, clisten);
 	mutex_unlock(&notify_mutex);
 }
 
@@ -138,15 +146,43 @@ static int chtls_inline_feature(struct tls_device *dev)
 
 static int chtls_create_hash(struct tls_device *dev, struct sock *sk)
 {
+	struct chtls_dev *cdev = to_chtls_dev(dev);
+
 	if (sk->sk_state == TCP_LISTEN)
-		return chtls_start_listen(sk);
+		return chtls_start_listen(cdev, sk);
 	return 0;
 }
 
 static void chtls_destroy_hash(struct tls_device *dev, struct sock *sk)
 {
+	struct chtls_dev *cdev = to_chtls_dev(dev);
+
 	if (sk->sk_state == TCP_LISTEN)
-		chtls_stop_listen(sk);
+		chtls_stop_listen(cdev, sk);
+}
+
+static void chtls_free_uld(struct chtls_dev *cdev)
+{
+	int i;
+
+	tls_unregister_device(&cdev->tlsdev);
+	kvfree(cdev->kmap.addr);
+	idr_destroy(&cdev->hwtid_idr);
+	for (i = 0; i < (1 << RSPQ_HASH_BITS); i++)
+		kfree_skb(cdev->rspq_skb_cache[i]);
+	kfree(cdev->lldi);
+	kfree_skb(cdev->askb);
+	kfree(cdev);
+}
+
+static inline void chtls_dev_release(struct kref *kref)
+{
+	struct chtls_dev *cdev;
+	struct tls_device *dev;
+
+	dev = container_of(kref, struct tls_device, kref);
+	cdev = to_chtls_dev(dev);
+	chtls_free_uld(cdev);
 }
 
 static void chtls_register_dev(struct chtls_dev *cdev)
@@ -159,15 +195,12 @@ static void chtls_register_dev(struct chtls_dev *cdev)
 	tlsdev->feature = chtls_inline_feature;
 	tlsdev->hash = chtls_create_hash;
 	tlsdev->unhash = chtls_destroy_hash;
-	tls_register_device(&cdev->tlsdev);
+	tlsdev->release = chtls_dev_release;
+	kref_init(&tlsdev->kref);
+	tls_register_device(tlsdev);
 	cdev->cdev_state = CHTLS_CDEV_STATE_UP;
 }
 
-static void chtls_unregister_dev(struct chtls_dev *cdev)
-{
-	tls_unregister_device(&cdev->tlsdev);
-}
-
 static void process_deferq(struct work_struct *task_param)
 {
 	struct chtls_dev *cdev = container_of(task_param,
@@ -262,28 +295,16 @@ out:
 	return NULL;
 }
 
-static void chtls_free_uld(struct chtls_dev *cdev)
-{
-	int i;
-
-	chtls_unregister_dev(cdev);
-	kvfree(cdev->kmap.addr);
-	idr_destroy(&cdev->hwtid_idr);
-	for (i = 0; i < (1 << RSPQ_HASH_BITS); i++)
-		kfree_skb(cdev->rspq_skb_cache[i]);
-	kfree(cdev->lldi);
-	kfree_skb(cdev->askb);
-	kfree(cdev);
-}
-
 static void chtls_free_all_uld(void)
 {
 	struct chtls_dev *cdev, *tmp;
 
 	mutex_lock(&cdev_mutex);
 	list_for_each_entry_safe(cdev, tmp, &cdev_list, list) {
-		if (cdev->cdev_state == CHTLS_CDEV_STATE_UP)
-			chtls_free_uld(cdev);
+		if (cdev->cdev_state == CHTLS_CDEV_STATE_UP) {
+			list_del(&cdev->list);
+			kref_put(&cdev->tlsdev.kref, cdev->tlsdev.release);
+		}
 	}
 	mutex_unlock(&cdev_mutex);
 }
@@ -304,7 +325,7 @@ static int chtls_uld_state_change(void *handle, enum cxgb4_state new_state)
 		mutex_lock(&cdev_mutex);
 		list_del(&cdev->list);
 		mutex_unlock(&cdev_mutex);
-		chtls_free_uld(cdev);
+		kref_put(&cdev->tlsdev.kref, cdev->tlsdev.release);
 		break;
 	default:
 		break;